bump version

Since channel map was not initialized, first channel was copied to every
other channel.

.gitignore

@@ -0,0 +1,22 @@
+*.o
+*~
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+compile
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+missing
+missings/.deps/
+src/.deps/
+src/.dirstamp
+stamp-h1
+fdkaac

COPYING

@@ -1,17 +1,108 @@
-Copyright (C) 2013 nu774
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: fdkaac
+Upstream-Contact: nu774 <honeycomb77@gmail.com>
+Source: https://github.com/nu774/fdkaac
 
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
 
-Permission is granted to anyone to use this software for any purpose,
+Files: *
-including commercial applications, and to alter it and redistribute it
+Copyright: 2013-2014 nu774 <honeycomb77@gmail.com>
-freely, subject to the following restrictions:
+License: Zlib
 
-1. The origin of this software must not be misrepresented; you must not
+Files: missings/getopt.c
- claim that you wrote the original software. If you use this software
+Copyright: 2002 Todd C. Miller <Todd.Miller@courtesan.com>
- in a product, an acknowledgment in the product documentation would be
+           2000 The NetBSD Foundation, Inc.
- appreciated but is not required.
+License: BSD-4-clause
-2. Altered source versions must be plainly marked as such, and must not be
+
- misrepresented as being the original software.
+Files: missings/getopt.h
-3. This notice may not be removed or altered from any source distribution.
+Copyright: 2000 The NetBSD Foundation, Inc.
+License: BSD-4-clause
+
+Files: src/parson.*
+Copyright: 2012 Krzysztof Gabis
+License: MIT
+
+Files: src/lpc.h
+Copyright: 1994-2007 the Xiph.Org Foundation
+License: BSD
+
+Files: src/lpc.c
+Copyright: 1994-2007 the Xiph.Org Foundation
+           1992, 1993, 1994 Jutta Degener and Carsten Bormann, Technische Universität Berlin
+License: BSD-style
+
+
+License: Zlib
+ This software is provided 'as-is', without any express or implied
+ warranty.  In no event will the authors be held liable for any damages
+ arising from the use of this software.
+ .
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+ .
+ 1. The origin of this software must not be misrepresented; you must not
+  claim that you wrote the original software. If you use this software
+  in a product, an acknowledgment in the product documentation would be
+  appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+  misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+
+License: MIT
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+ . 
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+ .
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+
+
+License: BSD-4-clause
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. All advertising materials mentioning features or use of this software
+    must display the following acknowledgement:
+        This product includes software developed by the NetBSD
+        Foundation, Inc. and its contributors.
+ 4. Neither the name of The NetBSD Foundation nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+ .
+ THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+
+License: BSD-style
+ Any use of this software is permitted provided that this notice is not
+ removed and that neither the authors nor the Technische Universita"t
+ Berlin are deemed to have made any representations as to the
+ suitability of this software for any purpose nor are held responsible
+ for any defects of this software. THERE IS ABSOLUTELY NO WARRANTY FOR
+ THIS SOFTWARE.

ChangeLog

@@ -1,6 +1,196 @@
+2014-09-13  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog [HEAD]
+
+  * bump version [v0.6.1]
+
+2014-09-12  nu774 <honeycomb77@gmail.com>
+
+  * write actual number of channels to mp4a box
+
+2014-08-17  nu774 <honeycomb77@gmail.com>
+
+  * update INSTALL [origin/master]
+
+  * add m4 macros
+
+2014-08-13  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * bump version [v0.6.0]
+
+2014-08-12  nu774 <honeycomb77@gmail.com>
+
+  * apply limiter when input is float
+
+  * refactor pcm reader framework
+
+2014-07-30  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * win32compat: fix aacenc_printf() not to write junk characters [v0.5.4]
+
+2014-05-12  nu774 <honeycomb77@gmail.com>
+
+  * write INSTALL
+
+2014-03-14  nu774 <honeycomb77@gmail.com>
+
+  * update COPYING (patch from darealshinji)
+
+2014-02-17  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * bump version [v0.5.3]
+
+  * fix: CAF chan chunk using channel bitmap was not correctly handled
+
+2014-01-18  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * bump version [v0.5.2]
+
+  * fix reading of caf file without chan chunk
+
+2013-11-17  nu774 <honeycomb77@gmail.com>
+
+  * Merge pull request #9 from rbrito/fix-typo
+
+2013-11-18  Rogério Brito <rbrito@ime.usp.br>
+
+  * man: Regen manpage with hyphens escaped.
+
+  * README: Remove trailing whitespaces that end up in the manpages.
+
+  * README: Fix typo in bandwidth to match CLI options.
+
+2013-11-08  nu774 <honeycomb77@gmail.com>
+
+  * add genman.sh, update fdkaac.1
+
+  * update ChangeLog
+
+  * bump version [v0.5.1]
+
+  * fix to use libFDKAAC signaling mode 1
+
+2013-11-05  nu774 <honeycomb77@gmail.com>
+
+  * fix README
+
+2013-11-04  nu774 <honeycomb77@gmail.com>
+
+  * rename README.md -> README
+
+  * Update README -> README.md, generate groff manpage from README.md
+
+  * update ChangeLog
+
+  * update git2changelog to accept non-ascii output
+
+  * add manpage
+
+2013-11-03  nu774 <honeycomb77@gmail.com>
+
+  * fix gcc warnings
+
+  * Merge pull request #7 from rbrito/misc-fixes
+
+2013-11-03  Rogério Brito <rbrito@ime.usp.br>
+
+  * gitignore: Add list of files to ignore.
+
+2013-11-03  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * bump version [v0.5.0]
+
+  * add --sbr-ratio to support AACENC_SBR_RATIO appeared on libFDK 3.4.12
+
+  * support 7.1 channel mode added on FDK 3.4.12
+
+2013-10-30  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog
+
+  * bump version [v0.4.2]
+
+  * use tell() to obtain data chunk offset
+
+  * rename aacenc_result_t -> aacenc_frame_t, simplify write_sample()
+
+  * prepend 1 sample zero padding in case of SBR and enc_delay is odd
+
+  * cleanup interface of aac_encode_frame()
+
+  * add some copyright notice
+
+2013-10-29  nu774 <honeycomb77@gmail.com>
+
+  * smart padding for better gapless playback
+
+  * fix unused variable warning
+
+  * fix warning: cast size_t as sprintf() arg to int
+
+  * fix vcxproj
+
+  * fix pcm_seek() to inline
+
+2013-10-27  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.4.1]
+
+  * add --include-sbr-delay
+
+  * fix help message: show -I as shorthand for --ignorelength
+
+  * remove --sbr-signaling
+
+2013-10-26  nu774 <honeycomb77@gmail.com>
+
+  * re-fix #ifdef cond for lrint()
+
+  * tag mapping: add recorded date and tempo, remove performer->artist
+
+2013-10-25  nu774 <honeycomb77@gmail.com>
+
+  * fix MSVC12 build issue
+
+  * fix build issue on platform where fileno is a naive macro
+
+  * update ChangeLog
+
+  * bump version [v0.4.0]
+
+  * update README
+
+2013-10-24  nu774 <honeycomb77@gmail.com>
+
+  * caf input support
+
+  * refactor pcm io routines
+
+2013-10-23  nu774 <honeycomb77@gmail.com>
+
+  * cleanup metadata handling
+
+  * --tag-from-json: properly support number/total format in json track field
+
+2013-10-22  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.3.3]
+
+  * fixed bogus sgpd written on --gapless-mode=1 and 2
+
 2013-10-21  nu774 <honeycomb77@gmail.com>
 
-  * bump version [HEAD]
+  * bump version [v0.3.2]
 
 2013-10-20  nu774 <honeycomb77@gmail.com>
 
@@ -12,7 +202,7 @@
 
 2013-10-19  nu774 <honeycomb77@gmail.com>
 
-  * update ChangeLog and git2changelog.py [origin/master]
+  * update ChangeLog and git2changelog.py
 
 2013-10-18  nu774 <honeycomb77@gmail.com>
 

INSTALL

@@ -1,370 +1,31 @@
-Installation Instructions
+Prerequiste
-*************************
+-----------
 
-Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation,
+To build fdkaac, you need the followings:
-Inc.
+- libfdk-aac (https://github.com/mstorsjo/fdk-aac)
+- GNU autoconf, GNU automake
 
-   Copying and distribution of this file, with or without modification,
+libfdk-aac is always required, and probably you have to build it yourself.
-are permitted in any medium without royalty provided the copyright
+Others are required only when you build by configure and make on Unix-like
-notice and this notice are preserved.  This file is offered as-is,
+enviromnent (including Cygwin or MinGW), and usually you can install them
-without warranty of any kind.
+through package manager of your system if they are not already present.
 
-Basic Installation
+Unix-like environment
-==================
+---------------------
 
-   Briefly, the shell commands `./configure; make; make install' should
+You can build and install libfdkaac and fdkaac in the following step.
-configure, build, and install this package.  The following
-more-detailed instructions are generic; see the `README' file for
-instructions specific to this package.  Some packages provide this
-`INSTALL' file but do not implement all of the features documented
-below.  The lack of an optional feature in a given package is not
-necessarily a bug.  More recommendations for GNU packages can be found
-in *note Makefile Conventions: (standards)Makefile Conventions.
 
-   The `configure' shell script attempts to guess correct values for
+1) extract the source, and cd to the source directory
-various system-dependent variables used during compilation.  It uses
+2) autoreconf -i
-those values to create a `Makefile' in each directory of the package.
+3) ./configure
-It may also create one or more `.h' files containing system-dependent
+4) make
-definitions.  Finally, it creates a shell script `config.status' that
+5) sudo make install
-you can run in the future to recreate the current configuration, and a
-file `config.log' containing compiler output (useful mainly for
-debugging `configure').
 
-   It can also use an optional file (typically called `config.cache'
+Depending on your requirements, you might want to add some extra arguments to
-and enabled with `--cache-file=config.cache' or simply `-C') that saves
+configure script.
-the results of its tests to speed up reconfiguring.  Caching is
+You have to install libfdk-aac first, and do the same for fdkaac.
-disabled by default to prevent problems with accidental use of stale
-cache files.
 
-   If you need to do unusual things to compile the package, please try
+Windows, MSVC
-to figure out how `configure' could check whether to do them, and mail
+-------------
-diffs or instructions to the address given in the `README' so they can
-be considered for the next release.  If you are using the cache, and at
-some point `config.cache' contains results you don't want to keep, you
-may remove or edit it.
-
-   The file `configure.ac' (or `configure.in') is used to create
-`configure' by a program called `autoconf'.  You need `configure.ac' if
-you want to change it or regenerate `configure' using a newer version
-of `autoconf'.
-
-   The simplest way to compile this package is:
-
-  1. `cd' to the directory containing the package's source code and type
-     `./configure' to configure the package for your system.
-
-     Running `configure' might take a while.  While running, it prints
-     some messages telling which features it is checking for.
-
-  2. Type `make' to compile the package.
-
-  3. Optionally, type `make check' to run any self-tests that come with
-     the package, generally using the just-built uninstalled binaries.
-
-  4. Type `make install' to install the programs and any data files and
-     documentation.  When installing into a prefix owned by root, it is
-     recommended that the package be configured and built as a regular
-     user, and only the `make install' phase executed with root
-     privileges.
-
-  5. Optionally, type `make installcheck' to repeat any self-tests, but
-     this time using the binaries in their final installed location.
-     This target does not install anything.  Running this target as a
-     regular user, particularly if the prior `make install' required
-     root privileges, verifies that the installation completed
-     correctly.
-
-  6. You can remove the program binaries and object files from the
-     source code directory by typing `make clean'.  To also remove the
-     files that `configure' created (so you can compile the package for
-     a different kind of computer), type `make distclean'.  There is
-     also a `make maintainer-clean' target, but that is intended mainly
-     for the package's developers.  If you use it, you may have to get
-     all sorts of other programs in order to regenerate files that came
-     with the distribution.
-
-  7. Often, you can also type `make uninstall' to remove the installed
-     files again.  In practice, not all packages have tested that
-     uninstallation works correctly, even though it is required by the
-     GNU Coding Standards.
-
-  8. Some packages, particularly those that use Automake, provide `make
-     distcheck', which can by used by developers to test that all other
-     targets like `make install' and `make uninstall' work correctly.
-     This target is generally not run by end users.
-
-Compilers and Options
-=====================
-
-   Some systems require unusual options for compilation or linking that
-the `configure' script does not know about.  Run `./configure --help'
-for details on some of the pertinent environment variables.
-
-   You can give `configure' initial values for configuration parameters
-by setting variables in the command line or in the environment.  Here
-is an example:
-
-     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
-
-   *Note Defining Variables::, for more details.
-
-Compiling For Multiple Architectures
-====================================
-
-   You can compile the package for more than one kind of computer at the
-same time, by placing the object files for each architecture in their
-own directory.  To do this, you can use GNU `make'.  `cd' to the
-directory where you want the object files and executables to go and run
-the `configure' script.  `configure' automatically checks for the
-source code in the directory that `configure' is in and in `..'.  This
-is known as a "VPATH" build.
-
-   With a non-GNU `make', it is safer to compile the package for one
-architecture at a time in the source code directory.  After you have
-installed the package for one architecture, use `make distclean' before
-reconfiguring for another architecture.
-
-   On MacOS X 10.5 and later systems, you can create libraries and
-executables that work on multiple system types--known as "fat" or
-"universal" binaries--by specifying multiple `-arch' options to the
-compiler but only a single `-arch' option to the preprocessor.  Like
-this:
-
-     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CPP="gcc -E" CXXCPP="g++ -E"
-
-   This is not guaranteed to produce working output in all cases, you
-may have to build one architecture at a time and combine the results
-using the `lipo' tool if you have problems.
-
-Installation Names
-==================
-
-   By default, `make install' installs the package's commands under
-`/usr/local/bin', include files under `/usr/local/include', etc.  You
-can specify an installation prefix other than `/usr/local' by giving
-`configure' the option `--prefix=PREFIX', where PREFIX must be an
-absolute file name.
-
-   You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files.  If you
-pass the option `--exec-prefix=PREFIX' to `configure', the package uses
-PREFIX as the prefix for installing programs and libraries.
-Documentation and other data files still use the regular prefix.
-
-   In addition, if you use an unusual directory layout you can give
-options like `--bindir=DIR' to specify different values for particular
-kinds of files.  Run `configure --help' for a list of the directories
-you can set and what kinds of files go in them.  In general, the
-default for these options is expressed in terms of `${prefix}', so that
-specifying just `--prefix' will affect all of the other directory
-specifications that were not explicitly provided.
-
-   The most portable way to affect installation locations is to pass the
-correct locations to `configure'; however, many packages provide one or
-both of the following shortcuts of passing variable assignments to the
-`make install' command line to change installation locations without
-having to reconfigure or recompile.
-
-   The first method involves providing an override variable for each
-affected directory.  For example, `make install
-prefix=/alternate/directory' will choose an alternate location for all
-directory configuration variables that were expressed in terms of
-`${prefix}'.  Any directories that were specified during `configure',
-but not in terms of `${prefix}', must each be overridden at install
-time for the entire installation to be relocated.  The approach of
-makefile variable overrides for each directory variable is required by
-the GNU Coding Standards, and ideally causes no recompilation.
-However, some platforms have known limitations with the semantics of
-shared libraries that end up requiring recompilation when using this
-method, particularly noticeable in packages that use GNU Libtool.
-
-   The second method involves providing the `DESTDIR' variable.  For
-example, `make install DESTDIR=/alternate/directory' will prepend
-`/alternate/directory' before all installation names.  The approach of
-`DESTDIR' overrides is not required by the GNU Coding Standards, and
-does not work on platforms that have drive letters.  On the other hand,
-it does better at avoiding recompilation issues, and works well even
-when some directory options were not specified in terms of `${prefix}'
-at `configure' time.
-
-Optional Features
-=================
-
-   If the package supports it, you can cause programs to be installed
-with an extra prefix or suffix on their names by giving `configure' the
-option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
-
-   Some packages pay attention to `--enable-FEATURE' options to
-`configure', where FEATURE indicates an optional part of the package.
-They may also pay attention to `--with-PACKAGE' options, where PACKAGE
-is something like `gnu-as' or `x' (for the X Window System).  The
-`README' should mention any `--enable-' and `--with-' options that the
-package recognizes.
-
-   For packages that use the X Window System, `configure' can usually
-find the X include and library files automatically, but if it doesn't,
-you can use the `configure' options `--x-includes=DIR' and
-`--x-libraries=DIR' to specify their locations.
-
-   Some packages offer the ability to configure how verbose the
-execution of `make' will be.  For these packages, running `./configure
---enable-silent-rules' sets the default to minimal output, which can be
-overridden with `make V=1'; while running `./configure
---disable-silent-rules' sets the default to verbose, which can be
-overridden with `make V=0'.
-
-Particular systems
-==================
-
-   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
-CC is not installed, it is recommended to use the following options in
-order to use an ANSI C compiler:
-
-     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
-
-and if that doesn't work, install pre-built binaries of GCC for HP-UX.
-
-   HP-UX `make' updates targets which have the same time stamps as
-their prerequisites, which makes it generally unusable when shipped
-generated files such as `configure' are involved.  Use GNU `make'
-instead.
-
-   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
-parse its `<wchar.h>' header file.  The option `-nodtk' can be used as
-a workaround.  If GNU CC is not installed, it is therefore recommended
-to try
-
-     ./configure CC="cc"
-
-and if that doesn't work, try
-
-     ./configure CC="cc -nodtk"
-
-   On Solaris, don't put `/usr/ucb' early in your `PATH'.  This
-directory contains several dysfunctional programs; working variants of
-these programs are available in `/usr/bin'.  So, if you need `/usr/ucb'
-in your `PATH', put it _after_ `/usr/bin'.
-
-   On Haiku, software installed for all users goes in `/boot/common',
-not `/usr/local'.  It is recommended to use the following options:
-
-     ./configure --prefix=/boot/common
-
-Specifying the System Type
-==========================
-
-   There may be some features `configure' cannot figure out
-automatically, but needs to determine by the type of machine the package
-will run on.  Usually, assuming the package is built to be run on the
-_same_ architectures, `configure' can figure that out, but if it prints
-a message saying it cannot guess the machine type, give it the
-`--build=TYPE' option.  TYPE can either be a short name for the system
-type, such as `sun4', or a canonical name which has the form:
-
-     CPU-COMPANY-SYSTEM
-
-where SYSTEM can have one of these forms:
-
-     OS
-     KERNEL-OS
-
-   See the file `config.sub' for the possible values of each field.  If
-`config.sub' isn't included in this package, then this package doesn't
-need to know the machine type.
-
-   If you are _building_ compiler tools for cross-compiling, you should
-use the option `--target=TYPE' to select the type of system they will
-produce code for.
-
-   If you want to _use_ a cross compiler, that generates code for a
-platform different from the build platform, you should specify the
-"host" platform (i.e., that on which the generated programs will
-eventually be run) with `--host=TYPE'.
-
-Sharing Defaults
-================
-
-   If you want to set default values for `configure' scripts to share,
-you can create a site shell script called `config.site' that gives
-default values for variables like `CC', `cache_file', and `prefix'.
-`configure' looks for `PREFIX/share/config.site' if it exists, then
-`PREFIX/etc/config.site' if it exists.  Or, you can set the
-`CONFIG_SITE' environment variable to the location of the site script.
-A warning: not all `configure' scripts look for a site script.
-
-Defining Variables
-==================
-
-   Variables not defined in a site shell script can be set in the
-environment passed to `configure'.  However, some packages may run
-configure again during the build, and the customized values of these
-variables may be lost.  In order to avoid this problem, you should set
-them in the `configure' command line, using `VAR=value'.  For example:
-
-     ./configure CC=/usr/local2/bin/gcc
-
-causes the specified `gcc' to be used as the C compiler (unless it is
-overridden in the site shell script).
-
-Unfortunately, this technique does not work for `CONFIG_SHELL' due to
-an Autoconf bug.  Until the bug is fixed you can use this workaround:
-
-     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
-
-`configure' Invocation
-======================
-
-   `configure' recognizes the following options to control how it
-operates.
-
-`--help'
-`-h'
-     Print a summary of all of the options to `configure', and exit.
-
-`--help=short'
-`--help=recursive'
-     Print a summary of the options unique to this package's
-     `configure', and exit.  The `short' variant lists options used
-     only in the top level, while the `recursive' variant lists options
-     also present in any nested packages.
-
-`--version'
-`-V'
-     Print the version of Autoconf used to generate the `configure'
-     script, and exit.
-
-`--cache-file=FILE'
-     Enable the cache: use and save the results of the tests in FILE,
-     traditionally `config.cache'.  FILE defaults to `/dev/null' to
-     disable caching.
-
-`--config-cache'
-`-C'
-     Alias for `--cache-file=config.cache'.
-
-`--quiet'
-`--silent'
-`-q'
-     Do not print messages saying which checks are being made.  To
-     suppress all normal output, redirect it to `/dev/null' (any error
-     messages will still be shown).
-
-`--srcdir=DIR'
-     Look for the package's source code in directory DIR.  Usually
-     `configure' can determine that directory automatically.
-
-`--prefix=DIR'
-     Use DIR as the installation prefix.  *note Installation Names::
-     for more details, including other options available for fine-tuning
-     the installation locations.
-
-`--no-create'
-`-n'
-     Run the configure checks, but stop before creating any output
-     files.
-
-`configure' also accepts some other, not widely useful, options.  Run
-`configure --help' for more details.
 
+Extract libfdk-aac under fdkaac directory, and open MSVC/fdkaac.sln.

MSVC/fdkaac.vcxproj

@@ -96,12 +96,18 @@ copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\ </Command>
   <ItemGroup>
     <ClCompile Include="..\missings\getopt.c" />
     <ClCompile Include="..\src\aacenc.c" />
+    <ClCompile Include="..\src\caf_reader.c" />
     <ClCompile Include="..\src\compat_win32.c" />
-    <ClCompile Include="..\src\lpcm.c" />
+    <ClCompile Include="..\src\extrapolater.c" />
+    <ClCompile Include="..\src\limiter.c" />
+    <ClCompile Include="..\src\lpc.c" />
     <ClCompile Include="..\src\m4af.c" />
     <ClCompile Include="..\src\main.c" />
     <ClCompile Include="..\src\metadata.c" />
     <ClCompile Include="..\src\parson.c" />
+    <ClCompile Include="..\src\pcm_float_converter.c" />
+    <ClCompile Include="..\src\pcm_native_converter.c" />
+    <ClCompile Include="..\src\pcm_readhelper.c" />
     <ClCompile Include="..\src\pcm_sint16_converter.c" />
     <ClCompile Include="..\src\progress.c" />
     <ClCompile Include="..\src\wav_reader.c" />
@@ -109,14 +115,16 @@ copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\ </Command>
   <ItemGroup>
     <ClInclude Include="..\missings\getopt.h" />
     <ClInclude Include="..\src\aacenc.h" />
+    <ClInclude Include="..\src\catypes.h" />
     <ClInclude Include="..\src\compat.h" />
+    <ClInclude Include="..\src\lpc.h" />
     <ClInclude Include="..\src\lpcm.h" />
     <ClInclude Include="..\src\m4af.h" />
     <ClInclude Include="..\src\m4af_endian.h" />
     <ClInclude Include="..\src\metadata.h" />
     <ClInclude Include="..\src\parson.h" />
+    <ClInclude Include="..\src\pcm_reader.h" />
     <ClInclude Include="..\src\progress.h" />
-    <ClInclude Include="..\src\wav_reader.h" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="fdk-aac.vcxproj">

MSVC/fdkaac.vcxproj.filters

@@ -18,10 +18,19 @@
     <ClCompile Include="..\src\aacenc.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\caf_reader.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\compat_win32.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\src\lpcm.c">
+    <ClCompile Include="..\src\extrapolater.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\limiter.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\lpc.c">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClCompile Include="..\src\m4af.c">
@@ -30,6 +39,18 @@
     <ClCompile Include="..\src\main.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\pcm_float_converter.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\pcm_native_converter.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\pcm_readhelper.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\pcm_sint16_converter.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\progress.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -44,9 +65,15 @@
     <ClInclude Include="..\src\aacenc.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\catypes.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\compat.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\lpc.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\lpcm.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -62,9 +89,6 @@
     <ClInclude Include="..\src\progress.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\src\wav_reader.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
     <ClInclude Include="..\missings\getopt.h">
       <Filter>Header Files</Filter>
     </ClInclude>

Makefile.am

@@ -5,15 +5,23 @@ bin_PROGRAMS = fdkaac
 
 fdkaac_SOURCES = \
     src/aacenc.c               \
-    src/lpcm.c                 \
+    src/caf_reader.c           \
+    src/extrapolater.c         \
+    src/limiter.c              \
+    src/lpc.c                  \
     src/m4af.c                 \
     src/main.c                 \
     src/metadata.c             \
     src/parson.c               \
+    src/pcm_float_converter.c  \
+    src/pcm_native_converter.c \
+    src/pcm_readhelper.c       \
     src/pcm_sint16_converter.c \
     src/progress.c             \
     src/wav_reader.c
 
+dist_man_MANS = man/fdkaac.1
+
 fdkaac_LDADD = \
     @LIBICONV@ -lfdk-aac -lm
 

README

@@ -1,115 +1,332 @@
-==========================================================================
+% FDKAAC(1)
-fdkaac - command line frontend encoder for libfdk-aac
+% nu774 <honeycomb77@gmail.com>
-==========================================================================
+% November, 2013
 
-Prerequisites
+NAME
--------------
+====
-You need libfdk-aac.
-On Posix environment, you will also need GNU gettext (for iconv.m4) and
-GNU autoconf/automake.
 
-How to build on Posix environment
+fdkaac - command line frontend for libfdk-aac encoder
----------------------------------
-First, you need to build libfdk-aac and install on your system.
-Once you have done it, the following will do the task.
-(MinGW build can be done the same way, and doesn't require gettext/iconv)
 
-$ autoreconf -i
+SYNOPSIS
-$ ./configure && make && make install
+========
 
-How to build on MSVC
+**fdkaac** [OPTIONS] [FILE]
---------------------
-First you have to extract libfdk-aac source here, so that directory tree will
-look like the following:
-+- fdk-aac ---+-documentation
-|             +-libAACdec
-|             +-libAACenc
-|             :
-+- m4
-+- missings
-+- MSVC
-+- src
 
-MSVC solution for Visual Studio 2010 is under MSVC directory.
+DESCRIPTION
+===========
 
-Available input format
+**fdkaac** reads linear PCM audio in either WAV, raw PCM, or CAF format,
-----------------------
+and encodes it into either M4A / AAC file.
-WAV (or RF64), upto 32bit int / 64bit float format is supported.
-However, since FDK AAC encoder is implemented based on fixed point integer,
-encoder itself treats 16bit input only.
-Therefore, when feeding non-integer input, be careful so that input doesn't
-exceed 0dBFS to avoid hard clips.
-You might also want to apply dither/noise shape beforehand when your input
-has higher resolution.
 
-Note that fdkaac doesn't automatically resample for you
+If the input file is "-", data is read from stdin. Likewise, if the
-when input samplerate is not supported by AAC spec.
+output file is "-", data is written to stdout if one of streamable AAC
+transport formats are selected by **-f**.
 
-Tagging Options
+When CAF input and M4A output is used, tags in CAF file are copied into
----------------
+the resulting M4A.
-Generic tagging options like --tag, --tag-from-file, --long-tag allows you
-to set arbitrary tags.
-Available tags and their fcc (four char code) for --tag and --tag-from-file
-can be found at http://code.google.com/p/mp4v2/wiki/iTunesMetadata
 
-For tags such as Artist where first char of fcc is copyright sign,
+OPTIONS
-you can skip first char and just say like --tag="ART:Foo Bar" or
+=======
---tag-from-file=lyr:/path/to/your/lyrics.txt
 
-Currently, --tag-from-file just stores file contents into m4a without any
+-h, --help
-character encoding / line terminater conversion.
+:   Show command help
-Therefore, only use UTF-8 (without BOM) when setting text tags by this option.
 
-On the other hand, --tag / --long-tag (and other command line arguments) are
+-o \<FILE\>
-converted from locale character encoding to UTF-8 on Posix environment.
+:   Output filename.
-On Windows, command line arguments are always treated as Unicode.
 
-Tagging using JSON
+-p, --profile \<n\>
-------------------
+:   Target profile (MPEG4 audio object type, AOT)
-With --tag-from-json, fdkaac can read JSON file and set tags from it.
-By default, tags are assumed to be in the root object(dictionary) like this:
 
-{
+    2
-  "title": "No Expectations",
+    :   MPEG-4 AAC LC (default)
-  "artist": "The Rolling Stones",
-  "album": "Beggars Banquet",
-  "track": 2
-}
 
-In this case, you can simply specify the filename like:
+    5
---tag-from-json=/path/to/json
+    :   MPEG-4 HE-AAC (SBR)
 
-If the object containing tags is placed somewhere else, you can optionally
+    29
-specify the path of the object with dotted notation.
+    :   MPEG-4 HE-AAC v2 (SBR+PS)
 
-{
+    23
-  "format" : {
+    :   MPEG-4 AAC LD
-    "filename" : "Middle Curse.flac",
-    "nb_streams" : 1,
-    "format_name" : "flac",
-    "format_long_name" : "raw FLAC",
-    "start_time" : "N/A",
-    "duration" : "216.146667",
-    "size" : "11851007.000000",
-    "bit_rate" : "438628.000000",
-    "tags" : {
-      "ALBUM" : "Scary World Theory",
-      "ARTIST" : "Lali Puna",
-      "DATE" : "2001",
-      "DISCID" : "9208CC0A",
-      "TITLE" : "Middle Curse",
-      "TRACKTOTAL" : "10",
-      "track" : "2"
-    }
-  }
-}
 
-In this example, tags are placed under the object "format.tags".
+    39
-("format" is a child of the root, and "tags" is a child of the "format").
+    :   MPEG-4 AAC ELD
-In this case, you can say:
---tag-from-json=/path/to/json?format.tags
 
-For your information, ffprobe of ffmpeg project (or avprobe of libav) can
+    129
-output media information/metadata in json format like this.
+    :   MPEG-2 AAC LC
+
+    132
+    :   MPEG-2 HE-AAC (SBR)
+
+    156
+    :   MPEG-2 HE-AAC v2 (SBR+PS)
+
+-b, --bitrate \<n\>
+:   Target bitrate (for CBR)
+
+-m, --bitrate-mode \<n\>
+:   Bitrate configuration mode. Available VBR quality value depends on
+    other parameters such as profile, sample rate, or number of
+    channels.
+
+    0
+    :   CBR (default)
+
+    1-5
+    :   VBR (higher value -\> higher bitrate)
+
+-w, --bandwidth \<n\>
+:   Frequency bandwidth (lowpass cut-off frequency) in Hz. Available on
+    AAC LC only.
+
+-a, --afterburner \<n\>
+:   Configure afterburner mode. When enabled, quality is increased at
+    the expense of additional computational workload.
+
+    0
+    :   Off
+
+    1
+    :   On (default)
+
+-L, --lowdelay-sbr \<n\>
+:   Configure SBR activity on AAC ELD.
+
+    -1
+    :   Use ELD SBR auto configuration
+
+    0
+    :   Disable SBR on ELD (default)
+
+    1
+    :   Enable SBR on ELD
+
+-s, --sbr-ratio \<n\>
+:   Controls activation of downsampled SBR.
+
+    0
+    :   Use lib default (default)
+
+    1
+    :   Use downsampled SBR (default for ELD+SBR)
+
+    2
+    :   Use dual-rate SBR (default for HE-AAC)
+
+    Dual-rate SBR is what is normally used for HE-AAC, where AAC is
+    encoded at half the sample rate of SBR, hence "dual rate". On the
+    other hand, downsampled SBR uses same sample rate for both of AAC
+    and SBR (single rate), therefore downsampled SBR typically consumes
+    more bitrate.
+
+    Downsampled SBR is newly introduced feature in FDK encoder library
+    version 3.4.12. When libfdk-aac in the system doesn't support this,
+    dual-rate SBR will be used. When available, dual-rate SBR is the
+    default for HE-AAC and downsampled SBR is the default for ELD+SBR.
+
+    Note that downsampled HE-AAC is not so common as dual-rate one. When
+    downsampled HE-AAC is selected, **fdkaac** is forced to choose
+    explicit hierarchical SBR signaling, which (at least) iTunes doesn't
+    accept.
+
+-f, --transport-format \<n\>
+:   Transport format. Tagging and gapless playback is only available on
+    M4A. Streaming to stdout is only available on others.
+
+    0
+    :   M4A (default)
+
+    1
+    :   ADIF
+
+    2
+    :   ADTS
+
+    6
+    :   LATM MCP=1
+
+    7
+    :   LATM MCP=0
+
+    10
+    :   LOAS/LATM (LATM within LOAS)
+
+-C, --adts-crc-check
+:   Add CRC protection on ADTS header.
+
+-h, --header-period \<n\>
+:   StreamMuxConfig/PCE repetition period in the transport layer.
+
+-G, --gapless-mode \<n\>
+:   Method to declare amount of encoder delay (and padding) in M4A
+    container. These values are mandatory for proper gapless playback on
+    player side.
+
+    0
+    :   iTunSMPB (default)
+
+    1
+    :   ISO standard (edts and sgpd)
+
+    2
+    :   Both
+
+--include-sbr-delay
+:   When specified, count SBR decoder delay in encoder delay.
+
+    This is not iTunes compatible and will lead to gapless playback
+    issue on LC only decoder, but this is the default behavior of FDK
+    library.
+
+    Whether counting SBR decoder delay in encoder delay or not result in
+    incompatibility in gapless playback. You should pick which one will
+    work for your favorite player.
+
+    However, it's better not to choose SBR at all if you want gapless
+    playback. LC doesn't have such issues.
+
+-I, --ignorelength
+:   Ignore length field of data chunk in input WAV file.
+
+-S, --silent
+:   Don't print progress messages.
+
+--moov-before-mdat
+:   Place moov box before mdat box in M4A container. This option might
+    be important for some hardware players, that are known to refuse
+    moov box placed after mdat box.
+
+-R, --raw
+:   Regard input as raw PCM.
+
+--raw-channels \<n\>
+:   Specify number of channels of raw input (default: 2)
+
+--raw-rate \<n\>
+:   Specify sample rate of raw input (default: 44100)
+
+--raw-format \<spec\>
+:   Specify sample format of raw input (default: "S16L"). **Spec** is as
+    the following (case insensitive):
+
+    1st char -- type of sample
+    :   **S** (igned) | **U** (nsigned) | **F** (loat)
+
+    2nd part (in digits)
+    :   bits per channel
+
+    Last char -- endianness (can be omitted)
+    :   **L** (ittle, default) | **B** (ig)
+
+--title \<string\>
+:   Set title tag.
+
+--artist \<string\>
+:   Set artist tag.
+
+--album \<string\>
+:   Set album tag.
+
+--genre \<string\>
+:   Set genre tag.
+
+--date \<string\>
+:   Set date tag.
+
+--composer \<string\>
+:   Set composer tag.
+
+--grouping \<string\>
+:   Set grouping tag.
+
+--comment \<string\>
+:   Set comment tag.
+
+--album-artist \<string\>
+:   Set album artist tag.
+
+--track \<number[/total]\>
+:   Set track tag, with or without number of total tracks.
+
+--disk \<number[/total]\>
+:   Set disk tag, with or without number of total discs.
+
+--tempo \<n\>
+:   Set tempo (BPM) tag.
+
+--tag \<fcc\>:\<value\>
+:   Set iTunes predefined tag with explicit fourcc key and value. See
+    [https://code.google.com/p/mp4v2/wiki/iTunesMetadata](https://code.google.com/p/mp4v2/wiki/iTunesMetadata)
+    for known predefined keys. You can omit first char of **fcc** when
+    it is the copyright sign.
+
+--tag-from-file \<fcc\>:\<filename\>
+:   Same as --tag, but set content of file as tag value.
+
+--long-tag \<name\>:\<value\>
+:   Set arbitrary tag as iTunes custom metadata. Stored in
+    com.apple.iTunes field.
+
+--tag-from-json \<filename[?dot\_notation]\>
+:   Read tags from JSON. By default, tags are assumed to be direct
+    children of the root object in JSON. Optionally you can specify
+    arbitrary dot notation to locate the object containing tags.
+
+
+EXAMPLES
+========
+
+Encode WAV file into a M4A file. MPEG4 AAC LC, VBR quality 3:
+
+    fdkaac -m3 foo.wav
+
+Encode WAV file into a M4A file. MPEG4 HE-AAC, bitrate 64kbps:
+
+    fdkaac -p5 -b64 foo.wav
+
+Piping from **ffmpeg** (you need version supporting CAF output):
+
+    ffmpeg -i foo.flac -f caf - | fdkaac -b128 - -o foo.m4a
+
+Import tags via json:
+
+    ffprobe -v 0 -of json -show_format foo.flac >foo.json
+
+    flac -dc foo.flac | \
+    fdkaac - -ox.m4a -m2 --import-tag-from-json=foo.json?format.tags
+
+NOTES
+=====
+
+Upto 32bit integer or 64bit floating point format is supported as input.
+However, FDK library is implemented based on fixed point math and only
+supports 16bit integer PCM. Therefore, be wary of clipping. You might
+want to dither/noise shape beforehand when your input has higher
+resolution.
+
+Following channel layouts are supported by the encoder.
+
+1ch
+:   C
+
+2ch
+:   L R
+
+3ch
+:   C L R
+
+4ch
+:   C L R Cs
+
+5ch
+:   C L R Ls Rs
+
+5.1ch
+:   C L R Ls Rs LFE
+
+7.1ch (front)
+:   C Lc Rc L R Ls Rs LFE
+
+7.1ch (rear)
+:   C L R Ls Rs Rls Rrs LFE
 
-Note that not all tags can be read/written this way.

genman.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+pandoc -s -f markdown -t man README >fdkaac.1 && mv -f fdkaac.1 man/fdkaac.1

git2changelog.py

@@ -39,6 +39,6 @@ with Popen(GITLOG_CMD, shell=False, stdout=PIPE).stdout as pipe:
     commits = parse_gitlog(pipe)
     commits_by_date_author = groupby(commits, key=lambda x: (x.date, x.author))
     for (date, author), commits in commits_by_date_author:
-        output('{0}  {1}\n\n'.format(date, author))
+        output(u'{0}  {1}\n\n'.format(date, author).encode('utf-8'))
         for c in commits:
-            output('  * {0}{1}\n\n'.format(c.subject, c.ref))
+            output(u'  * {0}{1}\n\n'.format(c.subject, c.ref).encode('utf-8'))

m4/iconv.m4

@@ -0,0 +1,268 @@
+# iconv.m4 serial 18 (gettext-0.18.2)
+dnl Copyright (C) 2000-2002, 2007-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
+[
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([iconv])
+])
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+
+  dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed libiconv and not disabled its use
+  dnl via --without-libiconv-prefix, he wants to use it. The first
+  dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
+  am_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+  AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[
+#include <stdlib.h>
+#include <iconv.h>
+         ]],
+         [[iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);]])],
+      [am_cv_func_iconv=yes])
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+#include <stdlib.h>
+#include <iconv.h>
+           ]],
+           [[iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);]])],
+        [am_cv_lib_iconv=yes]
+        [am_cv_func_iconv=yes])
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
+      dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
+      dnl Solaris 10.
+      am_save_LIBS="$LIBS"
+      if test $am_cv_lib_iconv = yes; then
+        LIBS="$LIBS $LIBICONV"
+      fi
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#include <iconv.h>
+#include <string.h>
+int main ()
+{
+  int result = 0;
+  /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
+     returns.  */
+  {
+    iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
+    if (cd_utf8_to_88591 != (iconv_t)(-1))
+      {
+        static const char input[] = "\342\202\254"; /* EURO SIGN */
+        char buf[10];
+        const char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_utf8_to_88591,
+                            (char **) &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 1;
+        iconv_close (cd_utf8_to_88591);
+      }
+  }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static const char input[] = "\263";
+        char buf[10];
+        const char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            (char **) &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 2;
+        iconv_close (cd_ascii_to_88591);
+      }
+  }
+  /* Test against AIX 6.1..7.1 bug: Buffer overrun.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static const char input[] = "\304";
+        static char buf[2] = { (char)0xDE, (char)0xAD };
+        const char *inptr = input;
+        size_t inbytesleft = 1;
+        char *outptr = buf;
+        size_t outbytesleft = 1;
+        size_t res = iconv (cd_88591_to_utf8,
+                            (char **) &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
+          result |= 4;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#if 0 /* This bug could be worked around by the caller.  */
+  /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+        char buf[50];
+        const char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_88591_to_utf8,
+                            (char **) &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if ((int)res > 0)
+          result |= 8;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#endif
+  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
+     provided.  */
+  if (/* Try standardized names.  */
+      iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
+      /* Try IRIX, OSF/1 names.  */
+      && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
+      /* Try AIX names.  */
+      && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
+      /* Try HP-UX names.  */
+      && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
+    result |= 16;
+  return result;
+}]])],
+        [am_cv_func_iconv_works=yes],
+        [am_cv_func_iconv_works=no],
+        [
+changequote(,)dnl
+         case "$host_os" in
+           aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
+           *)            am_cv_func_iconv_works="guessing yes" ;;
+         esac
+changequote([,])dnl
+        ])
+      LIBS="$am_save_LIBS"
+    ])
+    case "$am_cv_func_iconv_works" in
+      *no) am_func_iconv=no am_cv_lib_iconv=no ;;
+      *)   am_func_iconv=yes ;;
+    esac
+  else
+    am_func_iconv=no am_cv_lib_iconv=no
+  fi
+  if test "$am_func_iconv" = yes; then
+    AC_DEFINE([HAVE_ICONV], [1],
+      [Define if you have the iconv() function and it works.])
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    AC_MSG_CHECKING([how to link with libiconv])
+    AC_MSG_RESULT([$LIBICONV])
+  else
+    dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+    dnl either.
+    CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+  AC_SUBST([LIBICONV])
+  AC_SUBST([LTLIBICONV])
+])
+
+dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
+dnl avoid warnings like
+dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
+dnl This is tricky because of the way 'aclocal' is implemented:
+dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
+dnl   Otherwise aclocal's initial scan pass would miss the macro definition.
+dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
+dnl   Otherwise aclocal would emit many "Use of uninitialized value $1"
+dnl   warnings.
+m4_define([gl_iconv_AC_DEFUN],
+  m4_version_prereq([2.64],
+    [[AC_DEFUN_ONCE(
+        [$1], [$2])]],
+    [m4_ifdef([gl_00GNULIB],
+       [[AC_DEFUN_ONCE(
+           [$1], [$2])]],
+       [[AC_DEFUN(
+           [$1], [$2])]])]))
+gl_iconv_AC_DEFUN([AM_ICONV],
+[
+  AM_ICONV_LINK
+  if test "$am_cv_func_iconv" = yes; then
+    AC_MSG_CHECKING([for iconv declaration])
+    AC_CACHE_VAL([am_cv_proto_iconv], [
+      AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+           ]],
+           [[]])],
+        [am_cv_proto_iconv_arg1=""],
+        [am_cv_proto_iconv_arg1="const"])
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    AC_MSG_RESULT([
+         $am_cv_proto_iconv])
+    AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
+      [Define as const if the declaration of iconv() needs const.])
+    dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>.
+    m4_ifdef([gl_ICONV_H_DEFAULTS],
+      [AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+       if test -n "$am_cv_proto_iconv_arg1"; then
+         ICONV_CONST="const"
+       fi
+      ])
+  fi
+])

m4/lib-ld.m4

@@ -0,0 +1,119 @@
+# lib-ld.m4 serial 6
+dnl Copyright (C) 1996-2003, 2009-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
+dnl collision with libtool.m4.
+
+dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes
+  ;;
+*)
+  acl_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-2.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+        [assume the C compiler uses GNU ld [default=no]])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'`
+      while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL([acl_cv_path_LD],
+[if test -z "$LD"; then
+  acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$acl_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+        test "$with_gnu_ld" != no && break
+        ;;
+      *)
+        test "$with_gnu_ld" != yes && break
+        ;;
+      esac
+    fi
+  done
+  IFS="$acl_save_ifs"
+else
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT([$LD])
+else
+  AC_MSG_RESULT([no])
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AC_LIB_PROG_LD_GNU
+])

m4/lib-link.m4

@@ -0,0 +1,777 @@
+# lib-link.m4 serial 26 (gettext-0.18.2)
+dnl Copyright (C) 2001-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.54])
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+    AC_LIB_LINKFLAGS_BODY([$1], [$2])
+    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+    ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
+  ])
+  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+  LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+  dnl results of this search when this library appears as a dependency.
+  HAVE_LIB[]NAME=yes
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. The missing-message
+dnl defaults to 'no' and may contain additional hints for the user.
+dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
+dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+
+  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed lib[]Name and not disabled its use
+  dnl via --without-lib[]Name-prefix, he wants to use it.
+  ac_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+    ac_save_LIBS="$LIBS"
+    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
+    dnl because these -l options might require -L options that are present in
+    dnl LIBS. -l options benefit only from the -L options listed before it.
+    dnl Otherwise, add it to the front of LIBS, because it may be a static
+    dnl library that depends on another static library that is present in LIBS.
+    dnl Static libraries benefit only from the static libraries listed after
+    dnl it.
+    case " $LIB[]NAME" in
+      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
+      *)       LIBS="$LIB[]NAME $LIBS" ;;
+    esac
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM([[$3]], [[$4]])],
+      [ac_cv_lib[]Name=yes],
+      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
+    LIBS="$ac_save_LIBS"
+  ])
+  if test "$ac_cv_lib[]Name" = yes; then
+    HAVE_LIB[]NAME=yes
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
+    AC_MSG_CHECKING([how to link with lib[]$1])
+    AC_MSG_RESULT([$LIB[]NAME])
+  else
+    HAVE_LIB[]NAME=no
+    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+    dnl $INC[]NAME either.
+    CPPFLAGS="$ac_save_CPPFLAGS"
+    LIB[]NAME=
+    LTLIB[]NAME=
+    LIB[]NAME[]_PREFIX=
+  fi
+  AC_SUBST([HAVE_LIB]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl   acl_libext,
+dnl   acl_shlibext,
+dnl   acl_libname_spec,
+dnl   acl_library_names_spec,
+dnl   acl_hardcode_libdir_flag_spec,
+dnl   acl_hardcode_libdir_separator,
+dnl   acl_hardcode_direct,
+dnl   acl_hardcode_minus_L.
+AC_DEFUN([AC_LIB_RPATH],
+[
+  dnl Tell automake >= 1.10 to complain if config.rpath is missing.
+  m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
+  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
+  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
+  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
+  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+  AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+  ])
+  wl="$acl_cv_wl"
+  acl_libext="$acl_cv_libext"
+  acl_shlibext="$acl_cv_shlibext"
+  acl_libname_spec="$acl_cv_libname_spec"
+  acl_library_names_spec="$acl_cv_library_names_spec"
+  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  acl_hardcode_direct="$acl_cv_hardcode_direct"
+  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  dnl Determine whether the user wants rpath handling at all.
+  AC_ARG_ENABLE([rpath],
+    [  --disable-rpath         do not hardcode runtime library paths],
+    :, enable_rpath=yes)
+])
+
+dnl AC_LIB_FROMPACKAGE(name, package)
+dnl declares that libname comes from the given package. The configure file
+dnl will then not have a --with-libname-prefix option but a
+dnl --with-package-prefix option. Several libraries can come from the same
+dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
+dnl macro call that searches for libname.
+AC_DEFUN([AC_LIB_FROMPACKAGE],
+[
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_frompackage_]NAME, [$2])
+  popdef([NAME])
+  pushdef([PACK],[$2])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_libsinpackage_]PACKUP,
+    m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
+  popdef([PACKUP])
+  popdef([PACK])
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
+dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
+  dnl Autoconf >= 2.61 supports dots in --with options.
+  pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_ARG_WITH(P_A_C_K[-prefix],
+[[  --with-]]P_A_C_K[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
+  --without-]]P_A_C_K[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        if test "$acl_libdirstem2" != "$acl_libdirstem" \
+           && ! test -d "$withval/$acl_libdirstem"; then
+          additional_libdir="$withval/$acl_libdirstem2"
+        fi
+      fi
+    fi
+])
+  dnl Search the library and its dependencies in $additional_libdir and
+  dnl $LDFLAGS. Using breadth-first-seach.
+  LIB[]NAME=
+  LTLIB[]NAME=
+  INC[]NAME=
+  LIB[]NAME[]_PREFIX=
+  dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
+  dnl computed. So it has to be reset here.
+  HAVE_LIB[]NAME=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='$1 $2'
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+        dnl or AC_LIB_HAVE_LINKFLAGS call.
+        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+          else
+            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+            dnl that this library doesn't exist. So just drop it.
+            :
+          fi
+        else
+          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+          dnl and the already constructed $LIBNAME/$LTLIBNAME.
+          found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            dir="$additional_libdir"
+            dnl The same code as in the loop below:
+            dnl First look for a shared library.
+            if test -n "$acl_shlibext"; then
+              if test -f "$dir/$libname$shrext"; then
+                found_dir="$dir"
+                found_so="$dir/$libname$shrext"
+              else
+                if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                  ver=`(cd "$dir" && \
+                        for f in "$libname$shrext".*; do echo "$f"; done \
+                        | sed -e "s,^$libname$shrext\\\\.,," \
+                        | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                        | sed 1q ) 2>/dev/null`
+                  if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
+                    found_dir="$dir"
+                    found_so="$dir/$libname$shrext.$ver"
+                  fi
+                else
+                  eval library_names=\"$acl_library_names_spec\"
+                  for f in $library_names; do
+                    if test -f "$dir/$f"; then
+                      found_dir="$dir"
+                      found_so="$dir/$f"
+                      break
+                    fi
+                  done
+                fi
+              fi
+            fi
+            dnl Then look for a static library.
+            if test "X$found_dir" = "X"; then
+              if test -f "$dir/$libname.$acl_libext"; then
+                found_dir="$dir"
+                found_a="$dir/$libname.$acl_libext"
+              fi
+            fi
+            if test "X$found_dir" != "X"; then
+              if test -f "$dir/$libname.la"; then
+                found_la="$dir/$libname.la"
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIB[]NAME; do
+              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  dnl First look for a shared library.
+                  if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                  dnl Then look for a static library.
+                  if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+            dnl Found the library.
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+              dnl Linking with a shared library. We attempt to hardcode its
+              dnl directory into the executable's runpath, unless it's the
+              dnl standard /usr/lib.
+              if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then
+                dnl No hardcoding is needed.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+              else
+                dnl Use an explicit option to hardcode DIR into the resulting
+                dnl binary.
+                dnl Potentially add DIR to ltrpathdirs.
+                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                dnl The hardcoding into $LIBNAME is system dependent.
+                if test "$acl_hardcode_direct" = yes; then
+                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+                  dnl resulting binary.
+                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                    dnl Use an explicit option to hardcode DIR into the resulting
+                    dnl binary.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    dnl Potentially add DIR to rpathdirs.
+                    dnl The rpathdirs will be appended to $LIBNAME at the end.
+                    haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                    dnl Rely on "-L$found_dir".
+                    dnl But don't add it if it's already contained in the LDFLAGS
+                    dnl or the already constructed $LIBNAME
+                    haveit=
+                    for x in $LDFLAGS $LIB[]NAME; do
+                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    else
+                      dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
+                      dnl here, because this doesn't fit in flags passed to the
+                      dnl compiler. So give up. No hardcoding. This affects only
+                      dnl very old systems.
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                dnl Linking with a static library.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+              else
+                dnl We shouldn't come here, but anyway it's good to have a
+                dnl fallback.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+              fi
+            fi
+            dnl Assume the include files are nearby.
+            additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+              dnl Potentially add $additional_includedir to $INCNAME.
+              dnl But don't add it
+              dnl   1. if it's the standard /usr/include,
+              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
+              dnl   3. if it's already present in $CPPFLAGS or the already
+              dnl      constructed $INCNAME,
+              dnl   4. if it doesn't exist as a directory.
+              if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INC[]NAME; do
+                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                      dnl Really add $additional_includedir to $INCNAME.
+                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+            dnl Look for dependencies.
+            if test -n "$found_la"; then
+              dnl Read the .la file. It defines the variables
+              dnl dlname, library_names, old_library, dependency_libs, current,
+              dnl age, revision, installed, dlopen, dlpreopen, libdir.
+              save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+              dnl We use only dependency_libs.
+              for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
+                    dnl But don't add it
+                    dnl   1. if it's the standard /usr/lib,
+                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
+                    dnl   3. if it's already present in $LDFLAGS or the already
+                    dnl      constructed $LIBNAME,
+                    dnl   4. if it doesn't exist as a directory.
+                    if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LIBNAME.
+                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LTLIBNAME.
+                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                      dnl Potentially add DIR to rpathdirs.
+                      dnl The rpathdirs will be appended to $LIBNAME at the end.
+                      haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                      dnl Potentially add DIR to ltrpathdirs.
+                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                      haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                    dnl Handle this in the next round.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                    dnl Handle this in the next round. Throw away the .la's
+                    dnl directory; it is already contained in a preceding -L
+                    dnl option.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                    dnl Most likely an immediate library name.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+            dnl Didn't find the library; assume it is in the system directories
+            dnl known to the linker and runtime loader. (All the system
+            dnl directories known to the linker should also be known to the
+            dnl runtime loader, otherwise the system is severely misconfigured.)
+            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+      dnl Weird platform: only the last -rpath option counts, the user must
+      dnl pass all path elements in one option. We can arrange that for a
+      dnl single library, but not when more than one $LIBNAMEs are used.
+      alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+      dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
+      acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+    else
+      dnl The -rpath options are cumulative.
+      for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+    dnl When using libtool, the option that works for both libraries and
+    dnl executables is -R. The -R options are cumulative.
+    for found_dir in $ltrpathdirs; do
+      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+    done
+  fi
+  popdef([P_A_C_K])
+  popdef([PACKLIBS])
+  popdef([PACKUP])
+  popdef([PACK])
+  popdef([NAME])
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+  for element in [$2]; do
+    haveit=
+    for x in $[$1]; do
+      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      [$1]="${[$1]}${[$1]:+ }$element"
+    fi
+  done
+])
+
+dnl For those cases where a variable contains several -L and -l options
+dnl referring to unknown libraries and directories, this macro determines the
+dnl necessary additional linker options for the runtime path.
+dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
+dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
+dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
+dnl otherwise linking without libtool is assumed.
+AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
+[
+  AC_REQUIRE([AC_LIB_RPATH])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  $1=
+  if test "$enable_rpath" != no; then
+    if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+      dnl Use an explicit option to hardcode directories into the resulting
+      dnl binary.
+      rpathdirs=
+      next=
+      for opt in $2; do
+        if test -n "$next"; then
+          dir="$next"
+          dnl No need to hardcode the standard /usr/lib.
+          if test "X$dir" != "X/usr/$acl_libdirstem" \
+             && test "X$dir" != "X/usr/$acl_libdirstem2"; then
+            rpathdirs="$rpathdirs $dir"
+          fi
+          next=
+        else
+          case $opt in
+            -L) next=yes ;;
+            -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
+                 dnl No need to hardcode the standard /usr/lib.
+                 if test "X$dir" != "X/usr/$acl_libdirstem" \
+                    && test "X$dir" != "X/usr/$acl_libdirstem2"; then
+                   rpathdirs="$rpathdirs $dir"
+                 fi
+                 next= ;;
+            *) next= ;;
+          esac
+        fi
+      done
+      if test "X$rpathdirs" != "X"; then
+        if test -n ""$3""; then
+          dnl libtool is used for linking. Use -R options.
+          for dir in $rpathdirs; do
+            $1="${$1}${$1:+ }-R$dir"
+          done
+        else
+          dnl The linker is used for linking directly.
+          if test -n "$acl_hardcode_libdir_separator"; then
+            dnl Weird platform: only the last -rpath option counts, the user
+            dnl must pass all path elements in one option.
+            alldirs=
+            for dir in $rpathdirs; do
+              alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
+            done
+            acl_save_libdir="$libdir"
+            libdir="$alldirs"
+            eval flag=\"$acl_hardcode_libdir_flag_spec\"
+            libdir="$acl_save_libdir"
+            $1="$flag"
+          else
+            dnl The -rpath options are cumulative.
+            for dir in $rpathdirs; do
+              acl_save_libdir="$libdir"
+              libdir="$dir"
+              eval flag=\"$acl_hardcode_libdir_flag_spec\"
+              libdir="$acl_save_libdir"
+              $1="${$1}${$1:+ }$flag"
+            done
+          fi
+        fi
+      fi
+    fi
+  fi
+  AC_SUBST([$1])
+])

m4/lib-prefix.m4

@@ -0,0 +1,224 @@
+# lib-prefix.m4 serial 7 (gettext-0.18)
+dnl Copyright (C) 2001-2005, 2008-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
+dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
+dnl require excessive bracketing.
+ifdef([AC_HELP_STRING],
+[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
+[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_LIB_ARG_WITH([lib-prefix],
+[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+  --without-lib-prefix    don't search for libraries in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+      fi
+    fi
+])
+  if test $use_additional = yes; then
+    dnl Potentially add $additional_includedir to $CPPFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/include,
+    dnl   2. if it's already present in $CPPFLAGS,
+    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_includedir" != "X/usr/include"; then
+      haveit=
+      for x in $CPPFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-I$additional_includedir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_includedir" = "X/usr/local/include"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_includedir"; then
+            dnl Really add $additional_includedir to $CPPFLAGS.
+            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+          fi
+        fi
+      fi
+    fi
+    dnl Potentially add $additional_libdir to $LDFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/lib,
+    dnl   2. if it's already present in $LDFLAGS,
+    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
+      haveit=
+      for x in $LDFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-L$additional_libdir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_libdir"; then
+            dnl Really add $additional_libdir to $LDFLAGS.
+            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+          fi
+        fi
+      fi
+    fi
+  fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+  dnl Unfortunately, prefix and exec_prefix get only finally determined
+  dnl at the end of configure.
+  if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  $1
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_PREPARE_MULTILIB creates
+dnl - a variable acl_libdirstem, containing the basename of the libdir, either
+dnl   "lib" or "lib64" or "lib/64",
+dnl - a variable acl_libdirstem2, as a secondary possible value for
+dnl   acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or
+dnl   "lib/amd64".
+AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
+[
+  dnl There is no formal standard regarding lib and lib64.
+  dnl On glibc systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine
+  dnl the compiler's default mode by looking at the compiler's library search
+  dnl path. If at least one of its elements ends in /lib64 or points to a
+  dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI.
+  dnl Otherwise we use the default, namely "lib".
+  dnl On Solaris systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or
+  dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  acl_libdirstem=lib
+  acl_libdirstem2=
+  case "$host_os" in
+    solaris*)
+      dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
+      dnl <http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view>.
+      dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
+      dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
+      dnl symlink is missing, so we set acl_libdirstem2 too.
+      AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit],
+        [AC_EGREP_CPP([sixtyfour bits], [
+#ifdef _LP64
+sixtyfour bits
+#endif
+           ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no])
+        ])
+      if test $gl_cv_solaris_64bit = yes; then
+        acl_libdirstem=lib/64
+        case "$host_cpu" in
+          sparc*)        acl_libdirstem2=lib/sparcv9 ;;
+          i*86 | x86_64) acl_libdirstem2=lib/amd64 ;;
+        esac
+      fi
+      ;;
+    *)
+      searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
+      if test -n "$searchpath"; then
+        acl_save_IFS="${IFS= 	}"; IFS=":"
+        for searchdir in $searchpath; do
+          if test -d "$searchdir"; then
+            case "$searchdir" in
+              */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
+              */../ | */.. )
+                # Better ignore directories of this form. They are misleading.
+                ;;
+              *) searchdir=`cd "$searchdir" && pwd`
+                 case "$searchdir" in
+                   */lib64 ) acl_libdirstem=lib64 ;;
+                 esac ;;
+            esac
+          fi
+        done
+        IFS="$acl_save_IFS"
+      fi
+      ;;
+  esac
+  test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+])

man/fdkaac.1

@@ -0,0 +1,493 @@
+.TH FDKAAC 1 "November, 2013" 
+.SH NAME
+.PP
+fdkaac \- command line frontend for libfdk\-aac encoder
+.SH SYNOPSIS
+.PP
+\f[B]fdkaac\f[] [OPTIONS][FILE]
+.SH DESCRIPTION
+.PP
+\f[B]fdkaac\f[] reads linear PCM audio in either WAV, raw PCM, or CAF
+format, and encodes it into either M4A / AAC file.
+.PP
+If the input file is "\-", data is read from stdin.
+Likewise, if the output file is "\-", data is written to stdout if one
+of streamable AAC transport formats are selected by \f[B]\-f\f[].
+.PP
+When CAF input and M4A output is used, tags in CAF file are copied into
+the resulting M4A.
+.SH OPTIONS
+.TP
+.B \-h, \-\-help
+Show command help
+.RS
+.RE
+.TP
+.B \-o <FILE>
+Output filename.
+.RS
+.RE
+.TP
+.B \-p, \-\-profile <n>
+Target profile (MPEG4 audio object type, AOT)
+.RS
+.TP
+.B 2
+MPEG\-4 AAC LC (default)
+.RS
+.RE
+.TP
+.B 5
+MPEG\-4 HE\-AAC (SBR)
+.RS
+.RE
+.TP
+.B 29
+MPEG\-4 HE\-AAC v2 (SBR+PS)
+.RS
+.RE
+.TP
+.B 23
+MPEG\-4 AAC LD
+.RS
+.RE
+.TP
+.B 39
+MPEG\-4 AAC ELD
+.RS
+.RE
+.TP
+.B 129
+MPEG\-2 AAC LC
+.RS
+.RE
+.TP
+.B 132
+MPEG\-2 HE\-AAC (SBR)
+.RS
+.RE
+.TP
+.B 156
+MPEG\-2 HE\-AAC v2 (SBR+PS)
+.RS
+.RE
+.RE
+.TP
+.B \-b, \-\-bitrate <n>
+Target bitrate (for CBR)
+.RS
+.RE
+.TP
+.B \-m, \-\-bitrate\-mode <n>
+Bitrate configuration mode.
+Available VBR quality value depends on other parameters such as profile,
+sample rate, or number of channels.
+.RS
+.TP
+.B 0
+CBR (default)
+.RS
+.RE
+.TP
+.B 1\-5
+VBR (higher value \-> higher bitrate)
+.RS
+.RE
+.RE
+.TP
+.B \-w, \-\-bandwidth <n>
+Frequency bandwidth (lowpass cut\-off frequency) in Hz.
+Available on AAC LC only.
+.RS
+.RE
+.TP
+.B \-a, \-\-afterburner <n>
+Configure afterburner mode.
+When enabled, quality is increased at the expense of additional
+computational workload.
+.RS
+.TP
+.B 0
+Off
+.RS
+.RE
+.TP
+.B 1
+On (default)
+.RS
+.RE
+.RE
+.TP
+.B \-L, \-\-lowdelay\-sbr <n>
+Configure SBR activity on AAC ELD.
+.RS
+.TP
+.B \-1
+Use ELD SBR auto configuration
+.RS
+.RE
+.TP
+.B 0
+Disable SBR on ELD (default)
+.RS
+.RE
+.TP
+.B 1
+Enable SBR on ELD
+.RS
+.RE
+.RE
+.TP
+.B \-s, \-\-sbr\-ratio <n>
+Controls activation of downsampled SBR.
+.RS
+.TP
+.B 0
+Use lib default (default)
+.RS
+.RE
+.TP
+.B 1
+Use downsampled SBR (default for ELD+SBR)
+.RS
+.RE
+.TP
+.B 2
+Use dual\-rate SBR (default for HE\-AAC)
+.RS
+.RE
+.PP
+Dual\-rate SBR is what is normally used for HE\-AAC, where AAC is
+encoded at half the sample rate of SBR, hence "dual rate".
+On the other hand, downsampled SBR uses same sample rate for both of AAC
+and SBR (single rate), therefore downsampled SBR typically consumes more
+bitrate.
+.PP
+Downsampled SBR is newly introduced feature in FDK encoder library
+version 3.4.12.
+When libfdk\-aac in the system doesn\[aq]t support this, dual\-rate SBR
+will be used.
+When available, dual\-rate SBR is the default for HE\-AAC and
+downsampled SBR is the default for ELD+SBR.
+.PP
+Note that downsampled HE\-AAC is not so common as dual\-rate one.
+When downsampled HE\-AAC is selected, \f[B]fdkaac\f[] is forced to
+choose explicit hierarchical SBR signaling, which (at least) iTunes
+doesn\[aq]t accept.
+.RE
+.TP
+.B \-f, \-\-transport\-format <n>
+Transport format.
+Tagging and gapless playback is only available on M4A.
+Streaming to stdout is only available on others.
+.RS
+.TP
+.B 0
+M4A (default)
+.RS
+.RE
+.TP
+.B 1
+ADIF
+.RS
+.RE
+.TP
+.B 2
+ADTS
+.RS
+.RE
+.TP
+.B 6
+LATM MCP=1
+.RS
+.RE
+.TP
+.B 7
+LATM MCP=0
+.RS
+.RE
+.TP
+.B 10
+LOAS/LATM (LATM within LOAS)
+.RS
+.RE
+.RE
+.TP
+.B \-C, \-\-adts\-crc\-check
+Add CRC protection on ADTS header.
+.RS
+.RE
+.TP
+.B \-h, \-\-header\-period <n>
+StreamMuxConfig/PCE repetition period in the transport layer.
+.RS
+.RE
+.TP
+.B \-G, \-\-gapless\-mode <n>
+Method to declare amount of encoder delay (and padding) in M4A
+container.
+These values are mandatory for proper gapless playback on player side.
+.RS
+.TP
+.B 0
+iTunSMPB (default)
+.RS
+.RE
+.TP
+.B 1
+ISO standard (edts and sgpd)
+.RS
+.RE
+.TP
+.B 2
+Both
+.RS
+.RE
+.RE
+.TP
+.B \-\-include\-sbr\-delay
+When specified, count SBR decoder delay in encoder delay.
+.RS
+.PP
+This is not iTunes compatible and will lead to gapless playback issue on
+LC only decoder, but this is the default behavior of FDK library.
+.PP
+Whether counting SBR decoder delay in encoder delay or not result in
+incompatibility in gapless playback.
+You should pick which one will work for your favorite player.
+.PP
+However, it\[aq]s better not to choose SBR at all if you want gapless
+playback.
+LC doesn\[aq]t have such issues.
+.RE
+.TP
+.B \-I, \-\-ignorelength
+Ignore length field of data chunk in input WAV file.
+.RS
+.RE
+.TP
+.B \-S, \-\-silent
+Don\[aq]t print progress messages.
+.RS
+.RE
+.TP
+.B \-\-moov\-before\-mdat
+Place moov box before mdat box in M4A container.
+This option might be important for some hardware players, that are known
+to refuse moov box placed after mdat box.
+.RS
+.RE
+.TP
+.B \-R, \-\-raw
+Regard input as raw PCM.
+.RS
+.RE
+.TP
+.B \-\-raw\-channels <n>
+Specify number of channels of raw input (default: 2)
+.RS
+.RE
+.TP
+.B \-\-raw\-rate <n>
+Specify sample rate of raw input (default: 44100)
+.RS
+.RE
+.TP
+.B \-\-raw\-format <spec>
+Specify sample format of raw input (default: "S16L").
+\f[B]Spec\f[] is as the following (case insensitive):
+.RS
+.TP
+.B 1st char \-\- type of sample
+\f[B]S\f[] (igned) | \f[B]U\f[] (nsigned) | \f[B]F\f[] (loat)
+.RS
+.RE
+.TP
+.B 2nd part (in digits)
+bits per channel
+.RS
+.RE
+.TP
+.B Last char \-\- endianness (can be omitted)
+\f[B]L\f[] (ittle, default) | \f[B]B\f[] (ig)
+.RS
+.RE
+.RE
+.TP
+.B \-\-title <string>
+Set title tag.
+.RS
+.RE
+.TP
+.B \-\-artist <string>
+Set artist tag.
+.RS
+.RE
+.TP
+.B \-\-album <string>
+Set album tag.
+.RS
+.RE
+.TP
+.B \-\-genre <string>
+Set genre tag.
+.RS
+.RE
+.TP
+.B \-\-date <string>
+Set date tag.
+.RS
+.RE
+.TP
+.B \-\-composer <string>
+Set composer tag.
+.RS
+.RE
+.TP
+.B \-\-grouping <string>
+Set grouping tag.
+.RS
+.RE
+.TP
+.B \-\-comment <string>
+Set comment tag.
+.RS
+.RE
+.TP
+.B \-\-album\-artist <string>
+Set album artist tag.
+.RS
+.RE
+.TP
+.B \-\-track <number[/total]>
+Set track tag, with or without number of total tracks.
+.RS
+.RE
+.TP
+.B \-\-disk <number[/total]>
+Set disk tag, with or without number of total discs.
+.RS
+.RE
+.TP
+.B \-\-tempo <n>
+Set tempo (BPM) tag.
+.RS
+.RE
+.TP
+.B \-\-tag <fcc>:<value>
+Set iTunes predefined tag with explicit fourcc key and value.
+See <https://code.google.com/p/mp4v2/wiki/iTunesMetadata> for known
+predefined keys.
+You can omit first char of \f[B]fcc\f[] when it is the copyright sign.
+.RS
+.RE
+.TP
+.B \-\-tag\-from\-file <fcc>:<filename>
+Same as \-\-tag, but set content of file as tag value.
+.RS
+.RE
+.TP
+.B \-\-long\-tag <name>:<value>
+Set arbitrary tag as iTunes custom metadata.
+Stored in com.apple.iTunes field.
+.RS
+.RE
+.TP
+.B \-\-tag\-from\-json <filename[?dot_notation]>
+Read tags from JSON.
+By default, tags are assumed to be direct children of the root object in
+JSON.
+Optionally you can specify arbitrary dot notation to locate the object
+containing tags.
+.RS
+.RE
+.SH EXAMPLES
+.PP
+Encode WAV file into a M4A file.
+MPEG4 AAC LC, VBR quality 3:
+.IP
+.nf
+\f[C]
+fdkaac\ \-m3\ foo.wav
+\f[]
+.fi
+.PP
+Encode WAV file into a M4A file.
+MPEG4 HE\-AAC, bitrate 64kbps:
+.IP
+.nf
+\f[C]
+fdkaac\ \-p5\ \-b64\ foo.wav
+\f[]
+.fi
+.PP
+Piping from \f[B]ffmpeg\f[] (you need version supporting CAF output):
+.IP
+.nf
+\f[C]
+ffmpeg\ \-i\ foo.flac\ \-f\ caf\ \-\ |\ fdkaac\ \-b128\ \-\ \-o\ foo.m4a
+\f[]
+.fi
+.PP
+Import tags via json:
+.IP
+.nf
+\f[C]
+ffprobe\ \-v\ 0\ \-of\ json\ \-show_format\ foo.flac\ >foo.json
+
+flac\ \-dc\ foo.flac\ |\ \\
+fdkaac\ \-\ \-ox.m4a\ \-m2\ \-\-import\-tag\-from\-json=foo.json?format.tags
+\f[]
+.fi
+.SH NOTES
+.PP
+Upto 32bit integer or 64bit floating point format is supported as input.
+However, FDK library is implemented based on fixed point math and only
+supports 16bit integer PCM.
+Therefore, be wary of clipping.
+You might want to dither/noise shape beforehand when your input has
+higher resolution.
+.PP
+Following channel layouts are supported by the encoder.
+.TP
+.B 1ch
+C
+.RS
+.RE
+.TP
+.B 2ch
+L R
+.RS
+.RE
+.TP
+.B 3ch
+C L R
+.RS
+.RE
+.TP
+.B 4ch
+C L R Cs
+.RS
+.RE
+.TP
+.B 5ch
+C L R Ls Rs
+.RS
+.RE
+.TP
+.B 5.1ch
+C L R Ls Rs LFE
+.RS
+.RE
+.TP
+.B 7.1ch (front)
+C Lc Rc L R Ls Rs LFE
+.RS
+.RE
+.TP
+.B 7.1ch (rear)
+C L R Ls Rs Rls Rrs LFE
+.RS
+.RE
+.SH AUTHORS
+nu774 <honeycomb77@gmail.com>.

src/aacenc.c

@@ -10,8 +10,20 @@
 #endif
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "aacenc.h"
 
+int aacenc_is_sbr_ratio_available()
+{
+#if AACENCODER_LIB_VL0 < 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1<4)
+    return 0;
+#else
+    LIB_INFO lib_info;
+    aacenc_get_lib_info(&lib_info);
+    return lib_info.version > 0x03040000;
+#endif
+}
+
 int aacenc_is_sbr_active(const aacenc_param_t *params)
 {
     switch (params->profile) {
@@ -25,15 +37,42 @@ int aacenc_is_sbr_active(const aacenc_param_t *params)
     return 0;
 }
 
+int aacenc_is_dual_rate_sbr(const aacenc_param_t *params)
+{
+    if (params->profile == AOT_PS || params->profile == AOT_MP2_PS)
+        return 1;
+    else if (params->profile == AOT_SBR || params->profile == AOT_MP2_SBR)
+        return params->sbr_ratio == 0 || params->sbr_ratio == 2;
+    else if (params->profile == AOT_ER_AAC_ELD && params->lowdelay_sbr)
+        return params->sbr_ratio == 2;
+    return 0;
+}
+
+void aacenc_get_lib_info(LIB_INFO *info)
+{
+    LIB_INFO *lib_info = 0;
+    lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
+    if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
+        int i;
+        for (i = 0; i < FDK_MODULE_LAST; ++i) {
+            if (lib_info[i].module_id == FDK_AACENC) {
+                memcpy(info, &lib_info[i], sizeof(LIB_INFO));
+                break;
+            }
+        }
+    }
+    free(lib_info);
+}
+
 static
 int aacenc_channel_mode(const pcm_sample_description_t *format)
 {
     uint32_t chanmask = format->channel_mask;
 
-    if (format->channels_per_frame > 6)
+    if (format->channels_per_frame > 8)
         return 0;
     if (!chanmask) {
-        static uint32_t defaults[] = { 0x4, 0x3, 0x7, 0, 0x37, 0x3f };
+        static uint32_t defaults[] = { 0x4, 0x3, 0x7, 0, 0x37, 0x3f, 0, 0x63f };
         chanmask = defaults[format->channels_per_frame - 1];
     }
     switch (chanmask) {
@@ -45,6 +84,10 @@ int aacenc_channel_mode(const pcm_sample_description_t *format)
     case 0x107: return MODE_1_2_1;
     case 0x607: return MODE_1_2_2;
     case 0x60f: return MODE_1_2_2_1;
+#if AACENCODER_LIB_VL0 > 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1>=4)
+    case 0xff:  return MODE_1_2_2_2_1;
+    case 0x63f: return MODE_7_1_REAR_SURROUND;
+#endif
     }
     return 0;
 }
@@ -55,8 +98,11 @@ int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
 {
     int channel_mode;
     int aot;
+    LIB_INFO lib_info;
 
     *encoder = 0;
+    aacenc_get_lib_info(&lib_info);
+
     if ((channel_mode = aacenc_channel_mode(format)) == 0) {
         fprintf(stderr, "ERROR: unsupported channel layout\n");
         goto FAIL;
@@ -82,13 +128,21 @@ int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
         fprintf(stderr, "ERROR: unsupported sample rate\n");
         goto FAIL;
     }
-    aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE, channel_mode);
+    if (aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE,
+                            channel_mode) != AACENC_OK) {
+        fprintf(stderr, "ERROR: unsupported channel mode\n");
+        goto FAIL;
+    }
     aacEncoder_SetParam(*encoder, AACENC_BANDWIDTH, params->bandwidth);
     aacEncoder_SetParam(*encoder, AACENC_CHANNELORDER, 1);
     aacEncoder_SetParam(*encoder, AACENC_AFTERBURNER, !!params->afterburner);
 
-    if (aot == AOT_ER_AAC_ELD && params->lowdelay_sbr)
+    aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, params->lowdelay_sbr);
-        aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, 1);
+
+#if AACENCODER_LIB_VL0 > 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1>=4)
+    if (lib_info.version > 0x03040000)
+        aacEncoder_SetParam(*encoder, AACENC_SBR_RATIO, params->sbr_ratio);
+#endif
 
     if (aacEncoder_SetParam(*encoder, AACENC_TRANSMUX,
                             params->transport_format) != AACENC_OK) {
@@ -124,7 +178,7 @@ FAIL:
 int aac_encode_frame(HANDLE_AACENCODER encoder,
                      const pcm_sample_description_t *format,
                      const int16_t *input, unsigned iframes,
-                     uint8_t **output, uint32_t *olen, uint32_t *osize)
+                     aacenc_frame_t *output)
 {
     uint32_t ilen = iframes * format->channels_per_frame;
     AACENC_BufDesc ibdesc = { 0 }, obdesc = { 0 };
@@ -142,12 +196,14 @@ int aac_encode_frame(HANDLE_AACENCODER encoder,
     unsigned channel_mode, obytes;
 
     channel_mode = aacEncoder_GetParam(encoder, AACENC_CHANNELMODE);
-    obytes = 6144 / 8 * channel_mode + 7;
+    obytes = 6144 / 8 * channel_mode;
-    if (!*output || *osize < obytes) {
+    if (!output->data || output->capacity < obytes) {
-        *osize = obytes;
+        uint8_t *p = realloc(output->data, obytes);
-        *output = realloc(*output, obytes);
+        if (!p) return -1;
+        output->capacity = obytes;
+        output->data = p;
     }
-    obufs[0] = *output;
+    obufs[0] = output->data;
     obuf_sizes[0] = obytes;
 
     iargs.numInSamples = ilen ? ilen : -1; /* -1 for signaling EOF */
@@ -167,6 +223,6 @@ int aac_encode_frame(HANDLE_AACENCODER encoder,
         fprintf(stderr, "ERROR: aacEncEncode() failed\n");
         return -1;
     }
-    *olen = oargs.numOutBytes;
+    output->size = oargs.numOutBytes;
-    return oargs.numInSamples;
+    return oargs.numInSamples / format->channels_per_frame;
 }

src/aacenc.h

@@ -15,6 +15,7 @@
     unsigned bandwidth; \
     unsigned afterburner; \
     unsigned lowdelay_sbr; \
+    unsigned sbr_ratio; \
     unsigned sbr_signaling; \
     unsigned transport_format; \
     unsigned adts_crc_check; \
@@ -24,8 +25,19 @@ typedef struct aacenc_param_t {
     AACENC_PARAMS
 } aacenc_param_t;
 
+typedef struct aacenc_frame_t {
+    uint8_t *data;
+    uint32_t size, capacity;
+} aacenc_frame_t;
+
+int aacenc_is_sbr_ratio_available();
+
 int aacenc_is_sbr_active(const aacenc_param_t *params);
 
+int aacenc_is_dual_rate_sbr(const aacenc_param_t *params);
+
+void aacenc_get_lib_info(LIB_INFO *info);
+
 int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
                 const pcm_sample_description_t *format,
                 AACENC_InfoStruct *info);
@@ -33,6 +45,6 @@ int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
 int aac_encode_frame(HANDLE_AACENCODER encoder,
                      const pcm_sample_description_t *format,
                      const int16_t *input, unsigned iframes,
-                     uint8_t **output, uint32_t *olen, uint32_t *osize);
+                     aacenc_frame_t *output);
 
 #endif

src/caf_reader.c

@@ -0,0 +1,252 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include "pcm_reader.h"
+#include "m4af.h"
+
+typedef struct caf_reader_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_sample_description_t sample_format;
+    int64_t length;
+    int64_t position;
+    int64_t data_offset;
+    pcm_io_context_t io;
+    aacenc_tag_callback_t tag_callback;
+    void *tag_ctx;
+    uint8_t chanmap[8];
+} caf_reader_t;
+
+static const pcm_sample_description_t *caf_get_format(pcm_reader_t *reader)
+{
+    return &((caf_reader_t *)reader)->sample_format;
+}
+
+static int64_t caf_get_length(pcm_reader_t *reader)
+{
+    return ((caf_reader_t *)reader)->length;
+}
+
+static int64_t caf_get_position(pcm_reader_t *reader)
+{
+    return ((caf_reader_t *)reader)->position;
+}
+
+static void caf_teardown(pcm_reader_t **reader)
+{
+    free(*reader);
+    *reader = 0;
+}
+
+static
+uint32_t caf_next_chunk(caf_reader_t *reader, int64_t *chunk_size)
+{
+    uint32_t fcc;
+    if (pcm_scanb(&reader->io, "LQ", &fcc, chunk_size) == 2)
+        return fcc;
+    return 0;
+}
+
+static
+int caf_desc(caf_reader_t *reader, int64_t chunk_size)
+{
+    double mSampleRate;
+    uint32_t mFormatID, mFormatFlags, mBytesPerPacket, mFramesPerPacket,
+             mChannelsPerFrame, mBitsPerChannel;
+    pcm_sample_description_t *desc = &reader->sample_format;
+
+    ENSURE(chunk_size >= 32);
+    TRY_IO(pcm_scanb(&reader->io, "QLLLLLL", &mSampleRate, &mFormatID,
+                     &mFormatFlags, &mBytesPerPacket, &mFramesPerPacket,
+                     &mChannelsPerFrame, &mBitsPerChannel) != 7);
+
+    ENSURE(mFormatID == M4AF_FOURCC('l','p','c','m'));
+    ENSURE(mSampleRate && mBytesPerPacket &&
+           mChannelsPerFrame >= 1 && mChannelsPerFrame <= 8 &&
+           mBitsPerChannel && mFramesPerPacket == 1 &&
+           mBytesPerPacket % mChannelsPerFrame == 0 &&
+           mBytesPerPacket >= mChannelsPerFrame * ((mBitsPerChannel + 7) / 8));
+
+    desc->sample_rate        = mSampleRate;
+    desc->bits_per_channel   = mBitsPerChannel;
+    desc->bytes_per_frame    = mBytesPerPacket;
+    desc->channels_per_frame = mChannelsPerFrame;
+
+    switch (mFormatFlags) {
+    case 0: desc->sample_type = PCM_TYPE_SINT_BE;  break;
+    case 1: desc->sample_type = PCM_TYPE_FLOAT_BE; break;
+    case 2: desc->sample_type = PCM_TYPE_SINT;     break;
+    case 3: desc->sample_type = PCM_TYPE_FLOAT;    break;
+    default: goto FAIL;
+    }
+
+    TRY_IO(pcm_skip(&reader->io, chunk_size - 32));
+    return 0;
+FAIL:
+    return -1;
+}
+
+static
+int caf_info(caf_reader_t *reader, int64_t chunk_size)
+{
+    char *buf, *key, *val, *end;
+    size_t len;
+
+    if (chunk_size < 4 || (buf = malloc(chunk_size)) == 0)
+        return -1;
+    pcm_read(&reader->io, buf, chunk_size);
+    key = buf + 4;
+    end = buf + chunk_size;
+    do {
+        if ((val = key + strlen(key) + 1) < end) {
+            len = strlen(val);
+            if (reader->tag_callback)
+                reader->tag_callback(reader->tag_ctx, key, val, len);
+            key = val + len + 1;
+        }
+    } while (key < end && val < end);
+
+    if (reader->tag_callback)
+        reader->tag_callback(reader->tag_ctx, 0, 0, 0);
+    free(buf);
+    return 0;
+}
+
+static
+int caf_read_frames(pcm_reader_t *preader, void *buffer, unsigned nframes)
+{
+    int rc;
+    unsigned i, j, nbytes;
+    caf_reader_t *reader = (caf_reader_t *)preader;
+    unsigned bpf = reader->sample_format.bytes_per_frame;
+    unsigned nchannels = reader->sample_format.channels_per_frame;
+    unsigned bpc = bpf / nchannels;
+    uint8_t tmp[64]; /* enough room for maximum bpf: 8ch float64 */
+    uint8_t *bp;
+    uint8_t *chanmap = reader->chanmap;
+
+    if (nframes > reader->length - reader->position)
+        nframes = reader->length - reader->position;
+    nbytes = nframes * bpf;
+    if (nbytes) {
+        if ((rc = pcm_read(&reader->io, buffer, nbytes)) < 0)
+            return -1;
+        nframes = rc / bpf;
+        for (bp = buffer, i = 0; i < nframes; ++i, bp += bpf) {
+            memcpy(tmp, bp, bpf);
+            for (j = 0; j < nchannels; ++j)
+                memcpy(bp + bpc * j, tmp + bpc * chanmap[j], bpc);
+        }
+        reader->position += nframes;
+    }
+    if (nframes == 0) {
+        /* fetch info after data chunk */
+        uint32_t fcc;
+        int64_t chunk_size;
+        while ((fcc = caf_next_chunk(reader, &chunk_size)) != 0) {
+            if (fcc == M4AF_FOURCC('i','n','f','o'))
+                TRY_IO(caf_info(reader, chunk_size));
+            else
+                TRY_IO(pcm_skip(&reader->io, chunk_size));
+        }
+    }
+    return nframes;
+FAIL:
+    return 0;
+}
+
+static
+int caf_parse(caf_reader_t *reader, int64_t *data_length)
+{
+    uint32_t fcc;
+    int64_t chunk_size;
+
+    *data_length = 0;
+
+    /* CAFFileHeader */
+    TRY_IO(pcm_read32be(&reader->io, &fcc));
+    ENSURE(fcc == M4AF_FOURCC('c','a','f','f'));
+    TRY_IO(pcm_skip(&reader->io, 4)); /* mFileVersion, mFileFlags */
+
+    while ((fcc = caf_next_chunk(reader, &chunk_size)) != 0) {
+        if (fcc == M4AF_FOURCC('d','e','s','c'))
+            TRY_IO(caf_desc(reader, chunk_size));
+        else if (fcc == M4AF_FOURCC('i','n','f','o'))
+            TRY_IO(caf_info(reader, chunk_size));
+        else if (fcc == M4AF_FOURCC('c','h','a','n')) {
+            ENSURE(reader->sample_format.channels_per_frame);
+            if (apple_chan_chunk(&reader->io, chunk_size,
+                                 &reader->sample_format, reader->chanmap) < 0)
+                goto FAIL;
+        } else if (fcc == M4AF_FOURCC('d','a','t','a')) {
+            TRY_IO(pcm_skip(&reader->io, 4)); /* mEditCount */
+            *data_length = (chunk_size == ~0ULL) ? chunk_size : chunk_size - 4;
+            reader->data_offset = pcm_tell(&reader->io);
+            break;
+        } else
+            TRY_IO(pcm_skip(&reader->io, chunk_size));
+    }
+    ENSURE(reader->sample_format.channels_per_frame);
+    ENSURE(fcc == M4AF_FOURCC('d','a','t','a'));
+    return 0;
+FAIL:
+    return -1;
+}
+
+static pcm_reader_vtbl_t caf_vtable = {
+    caf_get_format,
+    caf_get_length,
+    caf_get_position,
+    caf_read_frames,
+    caf_teardown
+};
+
+pcm_reader_t *caf_open(pcm_io_context_t *io,
+                       aacenc_tag_callback_t tag_callback, void *tag_ctx)
+{
+    caf_reader_t *reader = 0;
+    int64_t data_length;
+    unsigned bpf;
+
+    if ((reader = calloc(1, sizeof(caf_reader_t))) == 0)
+        return 0;
+    memcpy(&reader->io, io, sizeof(pcm_io_context_t));
+    reader->tag_callback = tag_callback;
+    reader->tag_ctx = tag_ctx;
+    memcpy(reader->chanmap, "\000\001\002\003\004\005\006\007", 8);
+
+    if (caf_parse(reader, &data_length) < 0) {
+        free(reader);
+        return 0;
+    }
+    bpf = reader->sample_format.bytes_per_frame;
+
+    /* CAF uses -1 to indicate "unknown size" */
+    if (data_length < 0 || data_length % bpf)
+        reader->length = INT64_MAX;
+    else
+        reader->length = data_length / bpf;
+
+    if (reader->length == INT64_MAX) {
+        if (pcm_seek(&reader->io, 0, SEEK_END) >= 0) {
+            int64_t size = pcm_tell(&reader->io);
+            if (size > 0)
+                reader->length = (size - reader->data_offset) / bpf;
+            pcm_seek(&reader->io, reader->data_offset, SEEK_SET);
+        }
+    }
+    reader->vtbl = &caf_vtable;
+    return (pcm_reader_t *)reader;
+}

src/catypes.h

@@ -0,0 +1,241 @@
+#if !defined(__CoreAudioTypes_h__)
+#define __CoreAudioTypes_h__
+
+enum { kVariableLengthArray = 1 };
+
+typedef uint32_t AudioChannelLabel;
+typedef uint32_t AudioChannelLayoutTag;
+
+struct AudioChannelDescription
+{
+    AudioChannelLabel mChannelLabel;
+    uint32_t          mChannelFlags;
+    float             mCoordinates[3];
+};
+typedef struct AudioChannelDescription AudioChannelDescription;
+
+struct AudioChannelLayout
+{
+    AudioChannelLayoutTag       mChannelLayoutTag;
+    uint32_t                    mChannelBitmap;
+    uint32_t                    mNumberChannelDescriptions;
+    AudioChannelDescription     mChannelDescriptions[kVariableLengthArray];
+};
+typedef struct AudioChannelLayout AudioChannelLayout;
+
+enum
+{
+    kAudioChannelLabel_Unknown                  = 0xFFFFFFFF,   // unknown or unspecified other use
+    kAudioChannelLabel_Unused                   = 0,            // channel is present, but has no intended use or destination
+    kAudioChannelLabel_UseCoordinates           = 100,          // channel is described by the mCoordinates fields.
+
+    kAudioChannelLabel_Left                     = 1,
+    kAudioChannelLabel_Right                    = 2,
+    kAudioChannelLabel_Center                   = 3,
+    kAudioChannelLabel_LFEScreen                = 4,
+    kAudioChannelLabel_LeftSurround             = 5,            // WAVE: "Back Left"
+    kAudioChannelLabel_RightSurround            = 6,            // WAVE: "Back Right"
+    kAudioChannelLabel_LeftCenter               = 7,
+    kAudioChannelLabel_RightCenter              = 8,
+    kAudioChannelLabel_CenterSurround           = 9,            // WAVE: "Back Center" or plain "Rear Surround"
+    kAudioChannelLabel_LeftSurroundDirect       = 10,           // WAVE: "Side Left"
+    kAudioChannelLabel_RightSurroundDirect      = 11,           // WAVE: "Side Right"
+    kAudioChannelLabel_TopCenterSurround        = 12,
+    kAudioChannelLabel_VerticalHeightLeft       = 13,           // WAVE: "Top Front Left"
+    kAudioChannelLabel_VerticalHeightCenter     = 14,           // WAVE: "Top Front Center"
+    kAudioChannelLabel_VerticalHeightRight      = 15,           // WAVE: "Top Front Right"
+
+    kAudioChannelLabel_TopBackLeft              = 16,
+    kAudioChannelLabel_TopBackCenter            = 17,
+    kAudioChannelLabel_TopBackRight             = 18,
+
+    kAudioChannelLabel_RearSurroundLeft         = 33,
+    kAudioChannelLabel_RearSurroundRight        = 34,
+    kAudioChannelLabel_LeftWide                 = 35,
+    kAudioChannelLabel_RightWide                = 36,
+    kAudioChannelLabel_LFE2                     = 37,
+    kAudioChannelLabel_LeftTotal                = 38,           // matrix encoded 4 channels
+    kAudioChannelLabel_RightTotal               = 39,           // matrix encoded 4 channels
+    kAudioChannelLabel_HearingImpaired          = 40,
+    kAudioChannelLabel_Narration                = 41,
+    kAudioChannelLabel_Mono                     = 42,
+    kAudioChannelLabel_DialogCentricMix         = 43,
+
+    kAudioChannelLabel_CenterSurroundDirect     = 44,           // back center, non diffuse
+    
+    kAudioChannelLabel_Haptic                   = 45,
+
+    // first order ambisonic channels
+    kAudioChannelLabel_Ambisonic_W              = 200,
+    kAudioChannelLabel_Ambisonic_X              = 201,
+    kAudioChannelLabel_Ambisonic_Y              = 202,
+    kAudioChannelLabel_Ambisonic_Z              = 203,
+
+    // Mid/Side Recording
+    kAudioChannelLabel_MS_Mid                   = 204,
+    kAudioChannelLabel_MS_Side                  = 205,
+
+    // X-Y Recording
+    kAudioChannelLabel_XY_X                     = 206,
+    kAudioChannelLabel_XY_Y                     = 207,
+
+    // other
+    kAudioChannelLabel_HeadphonesLeft           = 301,
+    kAudioChannelLabel_HeadphonesRight          = 302,
+    kAudioChannelLabel_ClickTrack               = 304,
+    kAudioChannelLabel_ForeignLanguage          = 305,
+
+    // generic discrete channel
+    kAudioChannelLabel_Discrete                 = 400,
+
+    // numbered discrete channel
+    kAudioChannelLabel_Discrete_0               = (1L<<16) | 0,
+    kAudioChannelLabel_Discrete_1               = (1L<<16) | 1,
+    kAudioChannelLabel_Discrete_2               = (1L<<16) | 2,
+    kAudioChannelLabel_Discrete_3               = (1L<<16) | 3,
+    kAudioChannelLabel_Discrete_4               = (1L<<16) | 4,
+    kAudioChannelLabel_Discrete_5               = (1L<<16) | 5,
+    kAudioChannelLabel_Discrete_6               = (1L<<16) | 6,
+    kAudioChannelLabel_Discrete_7               = (1L<<16) | 7,
+    kAudioChannelLabel_Discrete_8               = (1L<<16) | 8,
+    kAudioChannelLabel_Discrete_9               = (1L<<16) | 9,
+    kAudioChannelLabel_Discrete_10              = (1L<<16) | 10,
+    kAudioChannelLabel_Discrete_11              = (1L<<16) | 11,
+    kAudioChannelLabel_Discrete_12              = (1L<<16) | 12,
+    kAudioChannelLabel_Discrete_13              = (1L<<16) | 13,
+    kAudioChannelLabel_Discrete_14              = (1L<<16) | 14,
+    kAudioChannelLabel_Discrete_15              = (1L<<16) | 15,
+    kAudioChannelLabel_Discrete_65535           = (1L<<16) | 65535
+};
+
+#define AudioChannelLayoutTag_GetNumberOfChannels(layoutTag) \
+    ((uint32_t)((layoutTag) & 0x0000FFFF))
+
+enum
+{
+    kAudioChannelLayoutTag_UseChannelDescriptions   = (0L<<16) | 0,     // use the array of AudioChannelDescriptions to define the mapping.
+    kAudioChannelLayoutTag_UseChannelBitmap         = (1L<<16) | 0,     // use the bitmap to define the mapping.
+
+    kAudioChannelLayoutTag_Mono                     = (100L<<16) | 1,   // a standard mono stream
+    kAudioChannelLayoutTag_Stereo                   = (101L<<16) | 2,   // a standard stereo stream (L R) - implied playback
+    kAudioChannelLayoutTag_StereoHeadphones         = (102L<<16) | 2,   // a standard stereo stream (L R) - implied headphone playbac
+    kAudioChannelLayoutTag_MatrixStereo             = (103L<<16) | 2,   // a matrix encoded stereo stream (Lt, Rt)
+    kAudioChannelLayoutTag_MidSide                  = (104L<<16) | 2,   // mid/side recording
+    kAudioChannelLayoutTag_XY                       = (105L<<16) | 2,   // coincident mic pair (often 2 figure 8's)
+    kAudioChannelLayoutTag_Binaural                 = (106L<<16) | 2,   // binaural stereo (left, right)
+    kAudioChannelLayoutTag_Ambisonic_B_Format       = (107L<<16) | 4,   // W, X, Y, Z
+
+    kAudioChannelLayoutTag_Quadraphonic             = (108L<<16) | 4,   // front left, front right, back left, back right
+
+    kAudioChannelLayoutTag_Pentagonal               = (109L<<16) | 5,   // left, right, rear left, rear right, center
+
+    kAudioChannelLayoutTag_Hexagonal                = (110L<<16) | 6,   // left, right, rear left, rear right, center, rear
+
+    kAudioChannelLayoutTag_Octagonal                = (111L<<16) | 8,   // front left, front right, rear left, rear right,
+                                                                        // front center, rear center, side left, side right
+
+    kAudioChannelLayoutTag_Cube                     = (112L<<16) | 8,   // left, right, rear left, rear right
+                                                                        // top left, top right, top rear left, top rear right
+
+    //  MPEG defined layouts
+    kAudioChannelLayoutTag_MPEG_1_0                 = kAudioChannelLayoutTag_Mono,          //  C
+    kAudioChannelLayoutTag_MPEG_2_0                 = kAudioChannelLayoutTag_Stereo,        //  L R
+    kAudioChannelLayoutTag_MPEG_3_0_A               = (113L<<16) | 3,                       //  L R C
+    kAudioChannelLayoutTag_MPEG_3_0_B               = (114L<<16) | 3,                       //  C L R
+    kAudioChannelLayoutTag_MPEG_4_0_A               = (115L<<16) | 4,                       //  L R C Cs
+    kAudioChannelLayoutTag_MPEG_4_0_B               = (116L<<16) | 4,                       //  C L R Cs
+    kAudioChannelLayoutTag_MPEG_5_0_A               = (117L<<16) | 5,                       //  L R C Ls Rs
+    kAudioChannelLayoutTag_MPEG_5_0_B               = (118L<<16) | 5,                       //  L R Ls Rs C
+    kAudioChannelLayoutTag_MPEG_5_0_C               = (119L<<16) | 5,                       //  L C R Ls Rs
+    kAudioChannelLayoutTag_MPEG_5_0_D               = (120L<<16) | 5,                       //  C L R Ls Rs
+    kAudioChannelLayoutTag_MPEG_5_1_A               = (121L<<16) | 6,                       //  L R C LFE Ls Rs
+    kAudioChannelLayoutTag_MPEG_5_1_B               = (122L<<16) | 6,                       //  L R Ls Rs C LFE
+    kAudioChannelLayoutTag_MPEG_5_1_C               = (123L<<16) | 6,                       //  L C R Ls Rs LFE
+    kAudioChannelLayoutTag_MPEG_5_1_D               = (124L<<16) | 6,                       //  C L R Ls Rs LFE
+    kAudioChannelLayoutTag_MPEG_6_1_A               = (125L<<16) | 7,                       //  L R C LFE Ls Rs Cs
+    kAudioChannelLayoutTag_MPEG_7_1_A               = (126L<<16) | 8,                       //  L R C LFE Ls Rs Lc Rc
+    kAudioChannelLayoutTag_MPEG_7_1_B               = (127L<<16) | 8,                       //  C Lc Rc L R Ls Rs LFE    (doc: IS-13818-7 MPEG2-AAC Table 3.1)
+    kAudioChannelLayoutTag_MPEG_7_1_C               = (128L<<16) | 8,                       //  L R C LFE Ls Rs Rls Rrs
+    kAudioChannelLayoutTag_Emagic_Default_7_1       = (129L<<16) | 8,                       //  L R Ls Rs C LFE Lc Rc
+    kAudioChannelLayoutTag_SMPTE_DTV                = (130L<<16) | 8,                       //  L R C LFE Ls Rs Lt Rt
+                                                                                            //      (kAudioChannelLayoutTag_ITU_5_1 plus a matrix encoded stereo mix)
+
+    //  ITU defined layouts
+    kAudioChannelLayoutTag_ITU_1_0                  = kAudioChannelLayoutTag_Mono,          //  C
+    kAudioChannelLayoutTag_ITU_2_0                  = kAudioChannelLayoutTag_Stereo,        //  L R
+
+    kAudioChannelLayoutTag_ITU_2_1                  = (131L<<16) | 3,                       //  L R Cs
+    kAudioChannelLayoutTag_ITU_2_2                  = (132L<<16) | 4,                       //  L R Ls Rs
+    kAudioChannelLayoutTag_ITU_3_0                  = kAudioChannelLayoutTag_MPEG_3_0_A,    //  L R C
+    kAudioChannelLayoutTag_ITU_3_1                  = kAudioChannelLayoutTag_MPEG_4_0_A,    //  L R C Cs
+
+    kAudioChannelLayoutTag_ITU_3_2                  = kAudioChannelLayoutTag_MPEG_5_0_A,    //  L R C Ls Rs
+    kAudioChannelLayoutTag_ITU_3_2_1                = kAudioChannelLayoutTag_MPEG_5_1_A,    //  L R C LFE Ls Rs
+    kAudioChannelLayoutTag_ITU_3_4_1                = kAudioChannelLayoutTag_MPEG_7_1_C,    //  L R C LFE Ls Rs Rls Rrs
+
+    // DVD defined layouts
+    kAudioChannelLayoutTag_DVD_0                    = kAudioChannelLayoutTag_Mono,          // C (mono)
+    kAudioChannelLayoutTag_DVD_1                    = kAudioChannelLayoutTag_Stereo,        // L R
+    kAudioChannelLayoutTag_DVD_2                    = kAudioChannelLayoutTag_ITU_2_1,       // L R Cs
+    kAudioChannelLayoutTag_DVD_3                    = kAudioChannelLayoutTag_ITU_2_2,       // L R Ls Rs
+    kAudioChannelLayoutTag_DVD_4                    = (133L<<16) | 3,                       // L R LFE
+    kAudioChannelLayoutTag_DVD_5                    = (134L<<16) | 4,                       // L R LFE Cs
+    kAudioChannelLayoutTag_DVD_6                    = (135L<<16) | 5,                       // L R LFE Ls Rs
+    kAudioChannelLayoutTag_DVD_7                    = kAudioChannelLayoutTag_MPEG_3_0_A,    // L R C
+    kAudioChannelLayoutTag_DVD_8                    = kAudioChannelLayoutTag_MPEG_4_0_A,    // L R C Cs
+    kAudioChannelLayoutTag_DVD_9                    = kAudioChannelLayoutTag_MPEG_5_0_A,    // L R C Ls Rs
+    kAudioChannelLayoutTag_DVD_10                   = (136L<<16) | 4,                       // L R C LFE
+    kAudioChannelLayoutTag_DVD_11                   = (137L<<16) | 5,                       // L R C LFE Cs
+    kAudioChannelLayoutTag_DVD_12                   = kAudioChannelLayoutTag_MPEG_5_1_A,    // L R C LFE Ls Rs
+    // 13 through 17 are duplicates of 8 through 12.
+    kAudioChannelLayoutTag_DVD_13                   = kAudioChannelLayoutTag_DVD_8,         // L R C Cs
+    kAudioChannelLayoutTag_DVD_14                   = kAudioChannelLayoutTag_DVD_9,         // L R C Ls Rs
+    kAudioChannelLayoutTag_DVD_15                   = kAudioChannelLayoutTag_DVD_10,        // L R C LFE
+    kAudioChannelLayoutTag_DVD_16                   = kAudioChannelLayoutTag_DVD_11,        // L R C LFE Cs
+    kAudioChannelLayoutTag_DVD_17                   = kAudioChannelLayoutTag_DVD_12,        // L R C LFE Ls Rs
+    kAudioChannelLayoutTag_DVD_18                   = (138L<<16) | 5,                       // L R Ls Rs LFE
+    kAudioChannelLayoutTag_DVD_19                   = kAudioChannelLayoutTag_MPEG_5_0_B,    // L R Ls Rs C
+    kAudioChannelLayoutTag_DVD_20                   = kAudioChannelLayoutTag_MPEG_5_1_B,    // L R Ls Rs C LFE
+
+    // These layouts are recommended for AudioUnit usage
+        // These are the symmetrical layouts
+    kAudioChannelLayoutTag_AudioUnit_4              = kAudioChannelLayoutTag_Quadraphonic,
+    kAudioChannelLayoutTag_AudioUnit_5              = kAudioChannelLayoutTag_Pentagonal,
+    kAudioChannelLayoutTag_AudioUnit_6              = kAudioChannelLayoutTag_Hexagonal,
+    kAudioChannelLayoutTag_AudioUnit_8              = kAudioChannelLayoutTag_Octagonal,
+        // These are the surround-based layouts
+    kAudioChannelLayoutTag_AudioUnit_5_0            = kAudioChannelLayoutTag_MPEG_5_0_B,    // L R Ls Rs C
+    kAudioChannelLayoutTag_AudioUnit_6_0            = (139L<<16) | 6,                       // L R Ls Rs C Cs
+    kAudioChannelLayoutTag_AudioUnit_7_0            = (140L<<16) | 7,                       // L R Ls Rs C Rls Rrs
+    kAudioChannelLayoutTag_AudioUnit_7_0_Front      = (148L<<16) | 7,                       // L R Ls Rs C Lc Rc
+    kAudioChannelLayoutTag_AudioUnit_5_1            = kAudioChannelLayoutTag_MPEG_5_1_A,    // L R C LFE Ls Rs
+    kAudioChannelLayoutTag_AudioUnit_6_1            = kAudioChannelLayoutTag_MPEG_6_1_A,    // L R C LFE Ls Rs Cs
+    kAudioChannelLayoutTag_AudioUnit_7_1            = kAudioChannelLayoutTag_MPEG_7_1_C,    // L R C LFE Ls Rs Rls Rrs
+    kAudioChannelLayoutTag_AudioUnit_7_1_Front      = kAudioChannelLayoutTag_MPEG_7_1_A,    // L R C LFE Ls Rs Lc Rc
+
+    kAudioChannelLayoutTag_AAC_3_0                  = kAudioChannelLayoutTag_MPEG_3_0_B,    // C L R
+    kAudioChannelLayoutTag_AAC_Quadraphonic         = kAudioChannelLayoutTag_Quadraphonic,  // L R Ls Rs
+    kAudioChannelLayoutTag_AAC_4_0                  = kAudioChannelLayoutTag_MPEG_4_0_B,    // C L R Cs
+    kAudioChannelLayoutTag_AAC_5_0                  = kAudioChannelLayoutTag_MPEG_5_0_D,    // C L R Ls Rs
+    kAudioChannelLayoutTag_AAC_5_1                  = kAudioChannelLayoutTag_MPEG_5_1_D,    // C L R Ls Rs Lfe
+    kAudioChannelLayoutTag_AAC_6_0                  = (141L<<16) | 6,                       // C L R Ls Rs Cs
+    kAudioChannelLayoutTag_AAC_6_1                  = (142L<<16) | 7,                       // C L R Ls Rs Cs Lfe
+    kAudioChannelLayoutTag_AAC_7_0                  = (143L<<16) | 7,                       // C L R Ls Rs Rls Rrs
+    kAudioChannelLayoutTag_AAC_7_1                  = kAudioChannelLayoutTag_MPEG_7_1_B,    // C Lc Rc L R Ls Rs Lfe
+    kAudioChannelLayoutTag_AAC_Octagonal            = (144L<<16) | 8,                       // C L R Ls Rs Rls Rrs Cs
+
+    kAudioChannelLayoutTag_TMH_10_2_std             = (145L<<16) | 16,                      // L R C Vhc Lsd Rsd Ls Rs Vhl Vhr Lw Rw Csd Cs LFE1 LFE2
+    kAudioChannelLayoutTag_TMH_10_2_full            = (146L<<16) | 21,                      // TMH_10_2_std plus: Lc Rc HI VI Haptic
+
+    kAudioChannelLayoutTag_AC3_1_0_1                = (149L<<16) | 2,                       // C LFE
+    kAudioChannelLayoutTag_AC3_3_0                  = (150L<<16) | 3,                       // L C R
+    kAudioChannelLayoutTag_AC3_3_1                  = (151L<<16) | 4,                       // L C R Cs
+    kAudioChannelLayoutTag_AC3_3_0_1                = (152L<<16) | 4,                       // L C R LFE
+    kAudioChannelLayoutTag_AC3_2_1_1                = (153L<<16) | 4,                       // L R Cs LFE
+    kAudioChannelLayoutTag_AC3_3_1_1                = (154L<<16) | 5,                       // L C R Cs LFE
+
+    kAudioChannelLayoutTag_DiscreteInOrder          = (147L<<16) | 0,                       // needs to be ORed with the actual number of channels  
+    kAudioChannelLayoutTag_Unknown                  = 0xFFFF0000                            // needs to be ORed with the actual number of channels  
+};
+
+#endif

src/compat_win32.c

@@ -157,7 +157,7 @@ int aacenc_fprintf(FILE *fp, const char *fmt, ...)
         codepage_decode_wchar(CP_UTF8, s, &ws);
         free(s);
         fflush(fp);
-        WriteConsoleW(fh, ws, cnt, &nw, 0);
+        WriteConsoleW(fh, ws, wcslen(ws), &nw, 0);
         free(ws);
     }
     return cnt;

src/extrapolater.c

@@ -0,0 +1,221 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "pcm_reader.h"
+#include "lpc.h"
+
+typedef int16_t sample_t;
+
+typedef struct buffer_t {
+    sample_t *data;
+    unsigned count;    /* count in frames */
+    unsigned capacity; /* size in bytes   */
+} buffer_t;
+
+typedef struct extrapolater_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_reader_t *src;
+    pcm_sample_description_t format;
+    buffer_t buffer[2];
+    unsigned nbuffer;
+    int (*process)(struct extrapolater_t *, void *, unsigned);
+} extrapolater_t;
+
+#define LPC_ORDER 32
+
+static inline pcm_reader_t *get_source(pcm_reader_t *reader)
+{
+    return ((extrapolater_t *)reader)->src;
+}
+
+static const
+pcm_sample_description_t *get_format(pcm_reader_t *reader)
+{
+    return pcm_get_format(get_source(reader));
+}
+
+static int64_t get_length(pcm_reader_t *reader)
+{
+    return pcm_get_length(get_source(reader));
+}
+
+static int64_t get_position(pcm_reader_t *reader)
+{
+    return pcm_get_position(get_source(reader));
+}
+
+static int realloc_buffer(buffer_t *bp, size_t size)
+{
+    if (bp->capacity < size) {
+        void *p = realloc(bp->data, size);
+        if (!p) return -1;
+        bp->data = p;
+        bp->capacity = size;
+    }
+    return 0;
+}
+
+static void reverse_buffer(sample_t *data, unsigned nframes, unsigned nchannels)
+{
+    unsigned i = 0, j = nchannels * (nframes - 1), n;
+
+    for (; i < j; i += nchannels, j -= nchannels) {
+        for (n = 0; n < nchannels; ++n) {
+            sample_t tmp = data[i + n];
+            data[i + n] = data[j + n];
+            data[j + n] = tmp;
+        }
+    }
+}
+
+static int fetch(extrapolater_t *self, unsigned nframes)
+{
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    buffer_t *bp = &self->buffer[self->nbuffer];
+    int rc = 0;
+
+    if (realloc_buffer(bp, nframes * sfmt->bytes_per_frame) == 0) {
+        rc = pcm_read_frames(self->src, bp->data, nframes);
+        if (rc > 0) bp->count = rc;
+    }
+    if (rc > 0)
+        self->nbuffer ^= 1;
+    return rc <= 0 ? 0 : bp->count;
+}
+
+static int extrapolate(extrapolater_t *self, const buffer_t *bp,
+                        void *dst, unsigned nframes)
+{
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    unsigned i, n = sfmt->channels_per_frame;
+    float lpc[LPC_ORDER];
+
+    for (i = 0; i < n; ++i) {
+        vorbis_lpc_from_data(bp->data + i, lpc, bp->count, LPC_ORDER, n);
+        vorbis_lpc_predict(lpc, &bp->data[i + n * (bp->count - LPC_ORDER)],
+                           LPC_ORDER, (sample_t*)dst + i, nframes, n);
+    }
+    return nframes;
+}
+
+static int process1(extrapolater_t *self, void *buffer, unsigned nframes);
+static int process2(extrapolater_t *self, void *buffer, unsigned nframes);
+static int process3(extrapolater_t *self, void *buffer, unsigned nframes);
+
+static int process0(extrapolater_t *self, void *buffer, unsigned nframes)
+{
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    unsigned nchannels = sfmt->channels_per_frame;
+    buffer_t *bp = &self->buffer[self->nbuffer];
+
+    if (fetch(self, nframes) < 2 * LPC_ORDER)
+        memset(buffer, 0, nframes * sfmt->bytes_per_frame);
+    else {
+        reverse_buffer(bp->data, bp->count, nchannels);
+        extrapolate(self, bp, buffer, nframes);
+        reverse_buffer(buffer, nframes, nchannels);
+        reverse_buffer(bp->data, bp->count, nchannels);
+    }
+    if (bp->count)
+        self->process = process1;
+    else {
+        memset(bp->data, 0, nframes * sfmt->bytes_per_frame);
+        bp->count = nframes;
+        self->process = process2;
+    }
+    return nframes;
+}
+
+static int process1(extrapolater_t *self, void *buffer, unsigned nframes)
+{
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    buffer_t *bp = &self->buffer[self->nbuffer ^ 1];
+
+    assert(bp->count <= nframes);
+    memcpy(buffer, bp->data, bp->count * sfmt->bytes_per_frame); 
+    if (!fetch(self, nframes)) {
+        buffer_t *bbp = &self->buffer[self->nbuffer];
+        if (bp->count < 2 * LPC_ORDER) {
+            size_t total = bp->count + bbp->count;
+            if (bbp->count &&
+                realloc_buffer(bbp, total * sfmt->bytes_per_frame) == 0 &&
+                realloc_buffer(bp, total * sfmt->bytes_per_frame) == 0)
+            {
+                memcpy(bbp->data + bbp->count * sfmt->channels_per_frame,
+                       bp->data, bp->count * sfmt->bytes_per_frame);
+                memcpy(bp->data, bbp->data, total * sfmt->bytes_per_frame);
+                bp->count = total;
+            }
+        }
+        if (bp->count >= 2 * LPC_ORDER)
+            extrapolate(self, bp, bbp->data, nframes);
+        else
+            memset(bbp->data, 0, nframes * sfmt->bytes_per_frame);
+        bbp->count = nframes;
+        self->process = process2;
+    }
+    return bp->count;
+}
+
+static int process2(extrapolater_t *self, void *buffer, unsigned nframes)
+{
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    buffer_t *bp = &self->buffer[self->nbuffer];
+    if (bp->count < nframes)
+        nframes = bp->count;
+    memcpy(buffer, bp->data, nframes * sfmt->bytes_per_frame); 
+    if (bp->count > nframes)
+        memmove(bp->data, bp->data + nframes * sfmt->channels_per_frame,
+                (bp->count - nframes) * sfmt->bytes_per_frame);
+    bp->count -= nframes;
+    if (bp->count == 0)
+        self->process = process3;
+    return nframes;
+}
+
+static int process3(extrapolater_t *self, void *buffer, unsigned nframes)
+{
+    return 0;
+}
+
+static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
+{
+    extrapolater_t *self = (extrapolater_t *)reader;
+    return self->process(self, buffer, nframes);
+}
+
+static void teardown(pcm_reader_t **reader)
+{
+    extrapolater_t *self = (extrapolater_t *)*reader;
+    pcm_teardown(&self->src);
+    free(self->buffer[0].data);
+    free(self->buffer[1].data);
+    free(self);
+    *reader = 0;
+}
+
+static pcm_reader_vtbl_t my_vtable = {
+    get_format, get_length, get_position, read_frames, teardown
+};
+
+pcm_reader_t *extrapolater_open(pcm_reader_t *reader)
+{
+    extrapolater_t *self = 0;
+
+    if ((self = calloc(1, sizeof(extrapolater_t))) == 0)
+        return 0;
+    self->src = reader;
+    self->vtbl = &my_vtable;
+    self->process = process0;
+    return (pcm_reader_t *)self;
+}

src/limiter.c

@@ -0,0 +1,186 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <assert.h>
+#include "pcm_reader.h"
+#include "lpc.h"
+
+typedef struct buffer_t {
+    void *data;
+    unsigned count;
+    unsigned capacity;
+    unsigned head;
+} buffer_t;
+
+typedef struct limiter_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_reader_t *src;
+    pcm_sample_description_t format;
+    int64_t position;
+    buffer_t buffers[1];
+} limiter_t;
+
+static inline pcm_reader_t *get_source(pcm_reader_t *reader)
+{
+    return ((limiter_t *)reader)->src;
+}
+
+static const
+pcm_sample_description_t *get_format(pcm_reader_t *reader)
+{
+    return pcm_get_format(get_source(reader));
+}
+
+static int64_t get_length(pcm_reader_t *reader)
+{
+    return pcm_get_length(get_source(reader));
+}
+
+static int64_t get_position(pcm_reader_t *reader)
+{
+    return ((limiter_t *)reader)->position;
+}
+
+static int reserve_buffer(buffer_t *bp, size_t required, unsigned unit)
+{
+    if (bp->capacity < required) {
+        unsigned newsize = 1;
+        void *p;
+        while (newsize < required)
+            newsize <<= 1;
+        p = realloc(bp->data, newsize * unit);
+        if (!p) return -1;
+        bp->data = p;
+        bp->capacity = newsize;
+    }
+    return 0;
+}
+
+static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
+{
+    limiter_t *self = (limiter_t *)reader;
+    unsigned i, n, res, nch = self->format.channels_per_frame;
+    size_t bytes = nframes * pcm_get_format(self->src)->bytes_per_frame;
+    buffer_t *ibp = &self->buffers[nch];
+    float *obp = buffer;
+
+    do {
+        if (reserve_buffer(ibp, bytes, 1) < 0)
+           return -1;
+        res = pcm_read_frames(self->src, ibp->data, nframes);
+        for (n = 0; n < nch; ++n) {
+            float *ip = (float *)ibp->data, *x;
+            buffer_t *bp = &self->buffers[n];
+            unsigned end, limit;
+            if (reserve_buffer(bp, bp->count + res, sizeof(float)) < 0)
+                return -1;
+            x = bp->data;
+            for (i = 0; i < res; ++i)
+                x[bp->count++] = pcm_clip(ip[i * nch + n], -3.0, 3.0);
+            limit = bp->count;
+            if (limit > 0 && res > 0) {
+                float last = x[limit - 1];
+                for (; limit > 0 && x[limit-1] * last > 0; --limit)
+                    ;
+            }
+            end = bp->head;
+            while (end < limit) {
+                unsigned start, peak_pos;
+                float peak;
+                for (peak_pos = end; peak_pos < limit; ++peak_pos)
+                    if (x[peak_pos] > 1.0f || x[peak_pos] < -1.0f)
+                        break;
+                if (peak_pos == limit)
+                    break;
+                start = peak_pos;
+                peak = fabs(x[peak_pos]);
+                while (start > bp->head && x[peak_pos] * x[start] >= 0.0f)
+                    --start;
+                ++start;
+                for (end = peak_pos + 1; end < limit; ++end) {
+                    float y;
+                    if (x[peak_pos] * x[end] < 0.0f)
+                        break;
+                    y = fabs(x[end]);
+                    if (y > peak) {
+                        peak = y;
+                        peak_pos = end;
+                    }
+                }
+                if (peak < 2.0f) {
+                    float a = (peak - 1.0f) / (peak * peak);
+                    if (x[peak_pos] > 0.0f) a = -a;
+                    for (i = start; i < end; ++i)
+                        x[i] = x[i] + a * x[i] * x[i];
+                } else {
+                    float u = peak, v = 1.0f;
+                    float a = (u - 2.0f * v) / (u * u * u);
+                    float b = (3.0f * v - 2.0f * u) / (u * u);
+                    if (x[peak_pos] < 0.0f) b = -b;
+                    for (i = start; i < end; ++i)
+                        x[i] = x[i] + b * x[i] * x[i] + a * x[i] * x[i] * x[i];
+                }
+            }
+            bp->head = limit;
+        }
+        res = nframes;
+        for (n = 0; n < nch; ++n)
+            if (self->buffers[n].head < res)
+                res = self->buffers[n].head;
+        for (i = 0; i < res; ++i)
+            for (n = 0; n < nch; ++n)
+                *obp++ = ((float *)self->buffers[n].data)[i];
+        if (res) {
+            for (n = 0; n < nch; ++n) {
+                buffer_t *bp = &self->buffers[n];
+                float *p = bp->data;
+                memmove(p, p + res, (bp->count - res) * sizeof(float));
+                bp->count -= res;
+                bp->head  -= res;
+            }
+        }
+    } while (res == 0 && self->buffers[0].count);
+    self->position += res;
+    return res;
+}
+
+static void teardown(pcm_reader_t **reader)
+{
+    int i;
+    limiter_t *self = (limiter_t *)*reader;
+    pcm_teardown(&self->src);
+    for (i = 0; i < self->format.channels_per_frame + 1; ++i)
+        free(self->buffers[i].data);
+    free(self);
+    *reader = 0;
+}
+
+static pcm_reader_vtbl_t my_vtable = {
+    get_format, get_length, get_position, read_frames, teardown
+};
+
+pcm_reader_t *limiter_open(pcm_reader_t *reader)
+{
+    limiter_t *self;
+    int n = pcm_get_format(reader)->channels_per_frame;
+    size_t size = sizeof(limiter_t) + offsetof(limiter_t, buffers[n + 1]);
+
+    if ((self = calloc(1, size)) == 0)
+        return 0;
+    self->src = reader;
+    self->vtbl = &my_vtable;
+    self->format = *pcm_get_format(reader);
+    self->format.bits_per_channel = 32;
+    return (pcm_reader_t *)self;
+}

src/lpc.c

@@ -0,0 +1,169 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+  function: LPC low level routines
+  last mod: $Id: lpc.c 16227 2009-07-08 06:58:46Z xiphmont $
+
+ ********************************************************************/
+
+/* Some of these routines (autocorrelator, LPC coefficient estimator)
+   are derived from code written by Jutta Degener and Carsten Bormann;
+   thus we include their copyright below.  The entirety of this file
+   is freely redistributable on the condition that both of these
+   copyright notices are preserved without modification.  */
+
+/* Preserved Copyright: *********************************************/
+
+/* Copyright 1992, 1993, 1994 by Jutta Degener and Carsten Bormann,
+Technische Universita"t Berlin
+
+Any use of this software is permitted provided that this notice is not
+removed and that neither the authors nor the Technische Universita"t
+Berlin are deemed to have made any representations as to the
+suitability of this software for any purpose nor are held responsible
+for any defects of this software. THERE IS ABSOLUTELY NO WARRANTY FOR
+THIS SOFTWARE.
+
+As a matter of courtesy, the authors request to be informed about uses
+this software has found, about bugs in this software, and about any
+improvements that may be of general interest.
+
+Berlin, 28.11.1994
+Jutta Degener
+Carsten Bormann
+
+*********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "lpc.h"
+#include "lpcm.h"
+
+/* Autocorrelation LPC coeff generation algorithm invented by
+   N. Levinson in 1947, modified by J. Durbin in 1959. */
+
+/* Input : n elements of time doamin data
+   Output: m lpc coefficients, excitation energy */
+
+float vorbis_lpc_from_data(short *data,float *lpci,int n,int m,int stride){
+  double *aut=malloc(sizeof(*aut)*(m+1));
+  double *lpc=malloc(sizeof(*lpc)*(m));
+  double error;
+  double epsilon;
+  int i,j;
+
+  /* autocorrelation, p+1 lag coefficients */
+  j=m+1;
+  while(j--){
+    double d=0; /* double needed for accumulator depth */
+    for(i=j;i<n;i++)d+=(double)data[i*stride]*data[(i-j)*stride]/1073741824.0;
+    aut[j]=d;
+  }
+
+  /* Generate lpc coefficients from autocorr values */
+
+  /* set our noise floor to about -100dB */
+  error=aut[0] * (1. + 1e-10);
+  epsilon=1e-9*aut[0]+1e-10;
+
+  for(i=0;i<m;i++){
+    double r= -aut[i+1];
+
+    if(error<epsilon){
+      memset(lpc+i,0,(m-i)*sizeof(*lpc));
+      goto done;
+    }
+
+    /* Sum up this iteration's reflection coefficient; note that in
+       Vorbis we don't save it.  If anyone wants to recycle this code
+       and needs reflection coefficients, save the results of 'r' from
+       each iteration. */
+
+    for(j=0;j<i;j++)r-=lpc[j]*aut[i-j];
+    r/=error;
+
+    /* Update LPC coefficients and total error */
+
+    lpc[i]=r;
+    for(j=0;j<i/2;j++){
+      double tmp=lpc[j];
+
+      lpc[j]+=r*lpc[i-1-j];
+      lpc[i-1-j]+=r*tmp;
+    }
+    if(i&1)lpc[j]+=lpc[j]*r;
+
+    error*=1.-r*r;
+
+  }
+
+ done:
+
+  /* slightly damp the filter */
+  {
+    double g = .99;
+    double damp = g;
+    for(j=0;j<m;j++){
+      lpc[j]*=damp;
+      damp*=g;
+    }
+  }
+
+  for(j=0;j<m;j++)lpci[j]=(float)lpc[j];
+
+  /* we need the error value to know how big an impulse to hit the
+     filter with later */
+
+  free(aut);
+  free(lpc);
+  return error;
+}
+
+void vorbis_lpc_predict(float *coeff,short *prime,int m,
+                        short *data,long n,int stride){
+
+  /* in: coeff[0...m-1] LPC coefficients
+         prime[0...m-1] initial values (allocated size of n+m-1)
+    out: data[0...n-1] data samples */
+
+  long i,j,o,p;
+  float y;
+  float *work=malloc(sizeof(*work)*(m+n));
+
+  if(!prime)
+    for(i=0;i<m;i++)
+      work[i]=0.f;
+  else
+    for(i=0;i<m;i++)
+      work[i]=prime[i*stride]/32768.0f;
+
+  for(i=0;i<n;i++){
+    y=0;
+    o=i;
+    p=m;
+    for(j=0;j<m;j++)
+      y-=work[o++]*coeff[--p];
+
+    work[o]=y;
+    data[i*stride]=lrint(pcm_clip(y*32768.0,-32768.0,32767.0));
+  }
+  free(work);
+}

src/lpc.h

@@ -0,0 +1,27 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+  function: LPC low level routines
+  last mod: $Id: lpc.h 16037 2009-05-26 21:10:58Z xiphmont $
+
+ ********************************************************************/
+
+#ifndef _V_LPC_H_
+#define _V_LPC_H_
+
+/* simple linear scale LPC code */
+extern float vorbis_lpc_from_data(short *data,float *lpc,int n,int m,int stride);
+
+extern void vorbis_lpc_predict(float *coeff,short *prime,int m,
+                               short *data,long n,int stride);
+
+#endif

src/lpcm.c

@@ -1,256 +0,0 @@
-/* 
- * Copyright (C) 2013 nu774
- * For conditions of distribution and use, see copyright notice in COPYING
- */
-#if HAVE_CONFIG_H
-#  include "config.h"
-#endif
-#if HAVE_STDINT_H
-#  include <stdint.h>
-#endif
-#include <stdlib.h>
-#include <math.h>
-#include "lpcm.h"
-#include "m4af_endian.h"
-
-#ifdef _MSC_VER
-#  define inline __inline
-#  ifdef _M_IX86
-inline int lrint(double x)
-{
-    int n;
-    _asm {
-        fld x
-        fistp n
-    }
-    return n;
-}
-#  else
-#    include <emmintrin.h>
-inline int lrint(double x)
-{
-    return _mm_cvtsd_si32(_mm_load_sd(&x));
-}
-#  endif
-#endif
-
-static
-inline double pcm_clip(double n, double min_value, double max_value)
-{
-    if (n < min_value)
-        return min_value;
-    else if (n > max_value)
-        return max_value;
-    return n;
-}
-static
-inline float pcm_i2f(int32_t n)
-{
-    union {
-        int32_t ivalue;
-        float fvalue;
-    } u;
-    u.ivalue = n;
-    return u.fvalue;
-}
-static
-inline double pcm_i2d(int64_t n)
-{
-    union {
-        int64_t ivalue;
-        double fvalue;
-    } u;
-    u.ivalue = n;
-    return u.fvalue;
-}
-static
-inline int16_t pcm_quantize_s32(int32_t n)
-{
-    n = ((n >> 15) + 1) >> 1;
-    return (n == 0x8000) ? 0x7fff : n;
-}
-static
-inline int16_t pcm_quantize_f64(double v)
-{
-    return (int16_t)lrint(pcm_clip(v * 32768.0, -32768.0, 32767.0));
-}
-static
-inline int16_t pcm_s8_to_s16(int8_t n)
-{
-    return n << 8;
-}
-static
-inline int16_t pcm_u8_to_s16(uint8_t n)
-{
-    return (n << 8) ^ 0x8000;
-}
-static
-inline int16_t pcm_s16le_to_s16(int16_t n)
-{
-    return m4af_ltoh16(n);
-}
-static
-inline int16_t pcm_s16be_to_s16(int16_t n)
-{
-    return m4af_btoh16(n);
-}
-static
-inline int16_t pcm_u16le_to_s16(uint16_t n)
-{
-    return m4af_ltoh16(n) ^ 0x8000;
-}
-static
-inline int16_t pcm_u16be_to_s16(uint16_t n)
-{
-    return m4af_btoh16(n) ^ 0x8000;
-}
-static
-inline int32_t pcm_s24le_to_s32(uint8_t *p)
-{
-    return p[0]<<8 | p[1]<<16 | p[2]<<24;
-}
-static
-inline int32_t pcm_s24be_to_s32(uint8_t *p)
-{
-    return p[0]<<24 | p[1]<<16 | p[2]<<8;
-}
-static
-inline int32_t pcm_u24le_to_s32(uint8_t *p)
-{
-    return pcm_s24le_to_s32(p) ^ 0x80000000;
-}
-static
-inline int32_t pcm_u24be_to_s32(uint8_t *p)
-{
-    return pcm_s24be_to_s32(p) ^ 0x80000000;
-}
-static
-inline int16_t pcm_s24le_to_s16(uint8_t *p)
-{
-    return pcm_quantize_s32(pcm_s24le_to_s32(p));
-}
-static
-inline int16_t pcm_s24be_to_s16(uint8_t *p)
-{
-    return pcm_quantize_s32(pcm_s24be_to_s32(p));
-}
-static
-inline int16_t pcm_u24le_to_s16(uint8_t *p)
-{
-    return pcm_quantize_s32(pcm_u24le_to_s32(p));
-}
-static
-inline int16_t pcm_u24be_to_s16(uint8_t *p)
-{
-    return pcm_quantize_s32(pcm_u24be_to_s32(p));
-}
-static
-inline int16_t pcm_s32le_to_s16(int32_t n)
-{
-    return pcm_quantize_s32(m4af_ltoh32(n));
-}
-static
-inline int16_t pcm_s32be_to_s16(int32_t n)
-{
-    return pcm_quantize_s32(m4af_btoh32(n));
-}
-static
-inline int16_t pcm_u32le_to_s16(int32_t n)
-{
-    return pcm_quantize_s32(m4af_ltoh32(n) ^ 0x80000000);
-}
-static
-inline int16_t pcm_u32be_to_s16(int32_t n)
-{
-    return pcm_quantize_s32(m4af_btoh32(n) ^ 0x80000000);
-}
-static
-inline int16_t pcm_f32le_to_s16(int32_t n)
-{
-    return pcm_quantize_f64(pcm_i2f(m4af_ltoh32(n)));
-}
-static
-inline int16_t pcm_f32be_to_s16(int32_t n)
-{
-    return pcm_quantize_f64(pcm_i2f(m4af_btoh32(n)));
-}
-static
-inline int16_t pcm_f64le_to_s16(int64_t n)
-{
-    return pcm_quantize_f64(pcm_i2d(m4af_ltoh64(n)));
-}
-static
-inline int16_t pcm_f64be_to_s16(int64_t n)
-{
-    return pcm_quantize_f64(pcm_i2d(m4af_btoh64(n)));
-}
-
-int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
-                                 const void *input, uint32_t nframes,
-                                 int16_t *result)
-{
-#define CONVERT(type, conv) \
-    do { \
-        unsigned i; \
-        type *ip = (type *)input; \
-        for (i = 0; i < count; ++i) { \
-            result[i] = conv(ip[i]); \
-        } \
-    } while(0)
-
-#define CONVERT_BYTES(conv) \
-    do { \
-        unsigned i, bytes_per_channel; \
-        uint8_t *ip = (uint8_t *)input; \
-        bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \
-        for (i = 0; i < count; ++i) { \
-            result[i] = conv(ip); \
-            ip += bytes_per_channel; \
-        } \
-    } while(0)
-
-    uint32_t count = nframes * format->channels_per_frame;
-    if (!count)
-        return 0;
-    switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) {
-    case 1 | PCM_TYPE_SINT<<4:
-        CONVERT(int8_t, pcm_s8_to_s16); break;
-    case 1 | PCM_TYPE_UINT<<4:
-        CONVERT(uint8_t, pcm_u8_to_s16); break;
-    case 2 | PCM_TYPE_SINT<<4:
-        CONVERT(int16_t, pcm_s16le_to_s16); break;
-    case 2 | PCM_TYPE_UINT<<4:
-        CONVERT(uint16_t, pcm_u16le_to_s16); break;
-    case 2 | PCM_TYPE_SINT_BE<<4:
-        CONVERT(int16_t, pcm_s16be_to_s16); break;
-    case 2 | PCM_TYPE_UINT_BE<<4:
-        CONVERT(int16_t, pcm_u16be_to_s16); break;
-    case 3 | PCM_TYPE_SINT<<4:
-        CONVERT_BYTES(pcm_s24le_to_s16); break;
-    case 3 | PCM_TYPE_UINT<<4:
-        CONVERT_BYTES(pcm_u24le_to_s16); break;
-    case 3 | PCM_TYPE_SINT_BE<<4:
-        CONVERT_BYTES(pcm_s24be_to_s16); break;
-    case 3 | PCM_TYPE_UINT_BE<<4:
-        CONVERT_BYTES(pcm_u24be_to_s16); break;
-    case 4 | PCM_TYPE_SINT<<4:
-        CONVERT(int32_t, pcm_s32le_to_s16); break;
-    case 4 | PCM_TYPE_UINT<<4:
-        CONVERT(uint32_t, pcm_u32le_to_s16); break;
-    case 4 | PCM_TYPE_FLOAT<<4:
-        CONVERT(int32_t, pcm_f32le_to_s16); break;
-    case 4 | PCM_TYPE_SINT_BE<<4:
-        CONVERT(int32_t, pcm_s32be_to_s16); break;
-    case 4 | PCM_TYPE_UINT_BE<<4:
-        CONVERT(uint32_t, pcm_u32be_to_s16); break;
-    case 4 | PCM_TYPE_FLOAT_BE<<4:
-        CONVERT(int32_t, pcm_f32be_to_s16); break;
-    case 8 | PCM_TYPE_FLOAT<<4:
-        CONVERT(int64_t, pcm_f64le_to_s16); break;
-    case 8 | PCM_TYPE_FLOAT_BE<<4:
-        CONVERT(int64_t, pcm_f64be_to_s16); break;
-    default:
-        return -1;
-    }
-    return 0;
-}

src/lpcm.h

@@ -31,7 +31,34 @@ typedef struct pcm_sample_description_t {
 #define PCM_BYTES_PER_CHANNEL(desc) \
     ((desc)->bytes_per_frame / (desc)->channels_per_frame)
 
-int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
+#if defined(_MSC_VER) && _MSC_VER < 1800
-                                 const void *input, uint32_t nframes,
+#  ifdef _M_IX86
-                                 int16_t *result);
+static inline int lrint(double x)
+{
+    int n;
+    _asm {
+        fld x
+        fistp n
+    }
+    return n;
+}
+#  else
+#    include <emmintrin.h>
+static inline int lrint(double x)
+{
+    return _mm_cvtsd_si32(_mm_load_sd(&x));
+}
+#  endif
+#endif
+
+static
+inline double pcm_clip(double n, double min_value, double max_value)
+{
+    if (n < min_value)
+        return min_value;
+    else if (n > max_value)
+        return max_value;
+    return n;
+}
+
 #endif

src/m4af.c

@@ -42,6 +42,7 @@ typedef struct m4af_chunk_entry_t {
 typedef struct m4af_track_t {
     uint32_t codec;
     uint32_t timescale;
+    uint16_t num_channels;
     int64_t creation_time;
     int64_t modification_time;
     int64_t duration;
@@ -102,12 +103,37 @@ typedef struct m4af_box_parser_t {
     int (*handler)(m4af_ctx_t *ctx, uint32_t name, uint64_t size);
 } m4af_box_parser_t;
 
+static
+int m4af_write_null_cb(void *cookie, const void *data, uint32_t size)
+{
+    int64_t *pos = cookie;
+    *pos += size;
+    return 0;
+}
+static
+int m4af_seek_null_cb(void *cookie, int64_t off, int whence)
+{
+    int64_t *pos = cookie;
+    *pos = off; /* XXX: we use only SEEK_SET */
+    return 0;
+}
+static
+int64_t m4af_tell_null_cb(void *cookie)
+{
+    return *((int64_t*)cookie);
+}
+
+static m4af_io_callbacks_t m4af_null_io_callbacks = {
+    0, m4af_write_null_cb, m4af_seek_null_cb, m4af_tell_null_cb
+};
+
 static
 int64_t m4af_timestamp(void)
 {
     return (int64_t)(time(0)) + (((1970 - 1904) * 365) + 17) * 24 * 60 * 60;
 }
 
+
 /*
  * http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2 
  */
@@ -211,6 +237,7 @@ m4af_ctx_t *m4af_create(uint32_t codec, uint32_t timescale,
     ctx->track[0].timescale = timescale;
     ctx->track[0].creation_time = timestamp;
     ctx->track[0].modification_time = timestamp;
+    ctx->track[0].num_channels = 2;
     return ctx;
 }
 
@@ -254,6 +281,12 @@ void m4af_teardown(m4af_ctx_t **ctxp)
     *ctxp = 0;
 }
 
+void m4af_set_num_channels(m4af_ctx_t *ctx, uint32_t track_idx,
+                           uint16_t channels)
+{
+    ctx->track[track_idx].num_channels = channels;
+}
+
 void m4af_set_fixed_frame_duration(m4af_ctx_t *ctx, uint32_t track_idx,
                                    uint32_t length)
 {
@@ -656,7 +689,7 @@ void m4af_write_stco_box(m4af_ctx_t *ctx, uint32_t track_idx)
     m4af_track_t *track = &ctx->track[track_idx];
     uint32_t i;
     m4af_chunk_entry_t *index = track->chunk_table;
-    int is_co64 = (ctx->mdat_pos + ctx->mdat_size > UINT32_MAX);
+    int is_co64 = index[track->num_chunks - 1].offset > 0xffffffff;
     int64_t pos = m4af_tell(ctx);
 
     m4af_write32(ctx, 0); /* size */
@@ -816,11 +849,13 @@ void m4af_write_mp4a_box(m4af_ctx_t *ctx, uint32_t track_idx)
                "\0\001"       /* data_reference_index: 1 */
                "\0\0\0\0"     /* reserved[0]             */
                "\0\0\0\0"     /* reserved[1]             */
-               "\0\002"       /* channelcount: 2         */
+               ,16);
+    m4af_write16(ctx, track->num_channels);
+    m4af_write(ctx,
                "\0\020"       /* samplesize: 16          */
                "\0\0"         /* pre_defined             */
                "\0\0"         /* reserved                */
-               ,24);
+               ,6);
     if (track->codec == M4AF_FOURCC('m','p','4','a')) {
         m4af_write32(ctx, track->timescale << 16);
         m4af_write_esds_box(ctx, track_idx);
@@ -864,17 +899,15 @@ void m4af_write_sbgp_box(m4af_ctx_t *ctx, uint32_t track_idx)
 static
 void m4af_write_sgpd_box(m4af_ctx_t *ctx, uint32_t track_idx)
 {
-    m4af_track_t *track = &ctx->track[track_idx];
     m4af_write(ctx,
-               "\0\0\0\032"  /* size               */
+               "\0\0\0\026"  /* size: 22           */
                "sgpd"        /* type               */
-               "\001"        /* version            */
+               "\0"          /* version            */
                "\0\0\0"      /* flags              */
                "roll"        /* grouping_type      */
-               "\0\0\0\002"  /* default_length: 2  */
                "\0\0\0\001"  /* entry_count: 1     */
                "\377\377"    /* payload_data: -1   */
-               , 26);
+               , 22);
 }
 
 static
@@ -1004,7 +1037,7 @@ void m4af_write_hdlr_box(m4af_ctx_t *ctx, uint32_t track_idx, const char *type)
     /* reserved[0] */
     m4af_write(ctx, !strcmp(type, "mdir") ? "appl" : "\0\0\0\0", 4);
     /* reserved[1], reserved[2], name */
-    m4af_write(ctx, reserved_and_name, (pos & 1) ? 9 : 10);
+    m4af_write(ctx, reserved_and_name, 9);
     m4af_update_box_size(ctx, pos);
 }
 
@@ -1051,7 +1084,6 @@ void m4af_write_elst_box(m4af_ctx_t *ctx, uint32_t track_idx)
 static
 void m4af_write_edts_box(m4af_ctx_t *ctx, uint32_t track_idx)
 {
-    m4af_track_t *track = &ctx->track[track_idx];
     int64_t pos = m4af_tell(ctx);
     m4af_write(ctx, "\0\0\0\0edts", 8);
     m4af_write_elst_box(ctx, track_idx);
@@ -1310,28 +1342,59 @@ void m4af_finalize_mdat(m4af_ctx_t *ctx)
     m4af_set_pos(ctx, ctx->mdat_pos + ctx->mdat_size);
 }
 
+static
+uint64_t m4af_patch_moov(m4af_ctx_t *ctx, uint32_t moov_size, uint32_t offset)
+{
+    int64_t pos = 0;
+    uint32_t moov_size2;
+    int i, j;
+    m4af_io_callbacks_t io_reserve = ctx->io;
+    void *io_cookie_reserve = ctx->io_cookie;
+
+    for (i = 0; i < ctx->num_tracks; ++i)
+        for (j = 0; j < ctx->track[i].num_chunks; ++j)
+            ctx->track[i].chunk_table[j].offset += offset;
+
+    ctx->io = m4af_null_io_callbacks;
+    ctx->io_cookie = &pos;
+    moov_size2 = m4af_write_moov_box(ctx);
+
+    if (moov_size2 != moov_size) {
+        /* stco -> co64 switching */
+        for (i = 0; i < ctx->num_tracks; ++i)
+            for (j = 0; j < ctx->track[i].num_chunks; ++j)
+                ctx->track[i].chunk_table[j].offset += moov_size2 - moov_size;
+        moov_size2 = m4af_write_moov_box(ctx);
+    }
+    ctx->io = io_reserve;
+    ctx->io_cookie = io_cookie_reserve;
+    return moov_size2;
+}
+
 static
 void m4af_shift_mdat_pos(m4af_ctx_t *ctx, uint32_t offset)
 {
     unsigned i, j;
     int64_t begin, end;
-    char buf[8192];
+    char *buf;
+    
+    buf = malloc(1024*1024*2);
 
     end = ctx->mdat_pos + ctx->mdat_size;
-    for (; (begin = m4af_max(ctx->mdat_pos, end - 8192)) < end; end = begin) {
+    for (; (begin = m4af_max(ctx->mdat_pos, end - 1024*1024*2)) < end;
+            end = begin) {
         m4af_set_pos(ctx, begin);
         ctx->io.read(ctx->io_cookie, buf, end - begin);
         m4af_set_pos(ctx, begin + offset);
         m4af_write(ctx, buf, end - begin);
     }
-    for (i = 0; i < ctx->num_tracks; ++i)
-        for (j = 0; j < ctx->track[i].num_chunks; ++j)
-            ctx->track[i].chunk_table[j].offset += offset;
     ctx->mdat_pos += offset;
     m4af_set_pos(ctx, ctx->mdat_pos - 16);
     m4af_write_free_box(ctx, 0);
     m4af_write(ctx, "\0\0\0\0mdat", 8);
     m4af_finalize_mdat(ctx);
+
+    free(buf);
 }
 
 int m4af_finalize(m4af_ctx_t *ctx, int optimize)
@@ -1360,7 +1423,8 @@ int m4af_finalize(m4af_ctx_t *ctx, int optimize)
     moov_size = m4af_write_moov_box(ctx);
     if (optimize) {
         int64_t pos;
-        m4af_shift_mdat_pos(ctx, moov_size + 1024);
+        uint32_t moov_size2 = m4af_patch_moov(ctx, moov_size, moov_size + 1024);
+        m4af_shift_mdat_pos(ctx, moov_size2 + 1024);
         m4af_set_pos(ctx, 32);
         m4af_write_moov_box(ctx);
         pos = m4af_tell(ctx);

src/m4af.h

@@ -104,6 +104,9 @@ void m4af_set_priming(m4af_ctx_t *ctx, uint32_t track_idx,
 
 void m4af_set_priming_mode(m4af_ctx_t *ctx, int mode);
 
+void m4af_set_num_channels(m4af_ctx_t *ctx, uint32_t track_idx,
+                           uint16_t channels);
+
 void m4af_set_fixed_frame_duration(m4af_ctx_t *ctx, uint32_t track_idx,
                                    uint32_t length);
 

src/main.c

@@ -33,7 +33,7 @@
 #include <windows.h>
 #endif
 #include "compat.h"
-#include "wav_reader.h"
+#include "pcm_reader.h"
 #include "aacenc.h"
 #include "m4af.h"
 #include "progress.h"
@@ -53,7 +53,8 @@ static void handle_signals(void)
 {
     int i, sigs[] = { SIGINT, SIGHUP, SIGTERM };
     for (i = 0; i < sizeof(sigs)/sizeof(sigs[0]); ++i) {
-        struct sigaction sa = { 0 };
+        struct sigaction sa;
+        memset(&sa, 0, sizeof sa);
         sa.sa_handler = signal_handler;
         sa.sa_flags |= SA_RESTART;
         sigaction(sigs[i], &sa, 0);
@@ -131,11 +132,14 @@ PROGNAME " %s\n"
 " -a, --afterburner <n>         Afterburner\n"
 "                                 0: Off\n"
 "                                 1: On(default)\n"
-" -L, --lowdelay-sbr            Enable ELD-SBR (AAC ELD only)\n"
+" -L, --lowdelay-sbr <-1|0|1>   Configure SBR activity on AAC ELD\n"
-" -s, --sbr-signaling <n>       SBR signaling mode\n"
+"                                -1: Use ELD SBR auto configurator\n"
-"                                 0: Implicit, backward compatible(default)\n"
+"                                 0: Disable SBR on ELD (default)\n"
-"                                 1: Explicit SBR and implicit PS\n"
+"                                 1: Enable SBR on ELD\n"
-"                                 2: Explicit hierarchical signaling\n"
+" -s, --sbr-ratio <0|1|2>       Controls activation of downsampled SBR\n"
+"                                 0: Use lib default (default)\n"
+"                                 1: downsampled SBR (default for ELD+SBR)\n"
+"                                 2: dual-rate SBR (default for HE-AAC)\n"
 " -f, --transport-format <n>    Transport format\n"
 "                                 0: RAW (default, muxed into M4A)\n"
 "                                 1: ADIF\n"
@@ -152,7 +156,10 @@ PROGNAME " %s\n"
 "                                 0: iTunSMPB (default)\n"
 "                                 1: ISO standard (edts + sgpd)\n"
 "                                 2: Both\n"
-" --ignorelength                Ignore length of WAV header\n"
+" --include-sbr-delay           Count SBR decoder delay in encoder delay\n"
+"                               This is not iTunes compatible, but is default\n"
+"                               behavior of FDK library.\n"
+" -I, --ignorelength            Ignore length of WAV header\n"
 " -S, --silent                  Don't print progress messages\n"
 " --moov-before-mdat            Place moov box before mdat box on m4a output\n"
 "\n"
@@ -207,6 +214,7 @@ typedef struct aacenc_param_ex_t {
     char *output_filename;
     FILE *output_fp;
     unsigned gapless_mode;
+    unsigned include_sbr_delay;
     unsigned ignore_length;
     int silent;
     int moov_before_mdat;
@@ -216,7 +224,9 @@ typedef struct aacenc_param_ex_t {
     unsigned raw_rate;
     const char *raw_format;
 
-    aacenc_tag_param_t tags;
+    aacenc_tag_store_t tags;
+    aacenc_tag_store_t source_tags;
+    aacenc_translate_generic_text_tag_ctx_t source_tag_ctx;
 
     char *json_filename;
 } aacenc_param_ex_t;
@@ -225,8 +235,9 @@ static
 int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 {
     int ch;
-    unsigned n;
+    int n;
 
+#define OPT_INCLUDE_SBR_DELAY    M4AF_FOURCC('s','d','l','y')
 #define OPT_MOOV_BEFORE_MDAT     M4AF_FOURCC('m','o','o','v')
 #define OPT_RAW_CHANNELS         M4AF_FOURCC('r','c','h','n')
 #define OPT_RAW_RATE             M4AF_FOURCC('r','r','a','t')
@@ -243,13 +254,14 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
         { "bitrate-mode",     required_argument, 0, 'm' },
         { "bandwidth",        required_argument, 0, 'w' },
         { "afterburner",      required_argument, 0, 'a' },
-        { "lowdelay-sbr",     no_argument,       0, 'L' },
+        { "lowdelay-sbr",     required_argument, 0, 'L' },
-        { "sbr-signaling",    required_argument, 0, 's' },
+        { "sbr-ratio",        required_argument, 0, 's' },
         { "transport-format", required_argument, 0, 'f' },
         { "adts-crc-check",   no_argument,       0, 'C' },
         { "header-period",    required_argument, 0, 'P' },
 
         { "gapless-mode",     required_argument, 0, 'G' },
+        { "include-sbr-delay", no_argument,      0, OPT_INCLUDE_SBR_DELAY  },
         { "ignorelength",     no_argument,       0, 'I' },
         { "silent",           no_argument,       0, 'S' },
         { "moov-before-mdat", no_argument,       0, OPT_MOOV_BEFORE_MDAT   },
@@ -321,14 +333,18 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
             params->afterburner = n;
             break;
         case 'L':
-            params->lowdelay_sbr = 1;
+            if (sscanf(optarg, "%d", &n) != 1 || n < -1 || n > 1) {
+                fprintf(stderr, "invalid arg for lowdelay-sbr\n");
+                return -1;
+            }
+            params->lowdelay_sbr = n;
             break;
         case 's':
             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
-                fprintf(stderr, "invalid arg for sbr-signaling\n");
+                fprintf(stderr, "invalid arg for sbr-ratio\n");
                 return -1;
             }
-            params->sbr_signaling = n;
+            params->sbr_ratio = n;
             break;
         case 'f':
             if (sscanf(optarg, "%u", &n) != 1) {
@@ -357,6 +373,9 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
             }
             params->gapless_mode = n;
             break;
+        case OPT_INCLUDE_SBR_DELAY:
+            params->include_sbr_delay = 1;
+            break;
         case 'I':
             params->ignore_length = 1;
             break;
@@ -398,8 +417,8 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
         case M4AF_TAG_TRACK:
         case M4AF_TAG_DISK:
         case M4AF_TAG_TEMPO:
-            aacenc_param_add_itmf_entry(&params->tags, ch, 0, optarg,
+            aacenc_add_tag_to_store(&params->tags, ch, 0, optarg,
-                                        strlen(optarg), 0);
+                                    strlen(optarg), 0);
             break;
         case OPT_SHORT_TAG:
         case OPT_SHORT_TAG_FILE:
@@ -432,9 +451,9 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
                     for (; *optarg; ++optarg)
                         fcc = ((fcc << 8) | (*optarg & 0xff));
                 }
-                aacenc_param_add_itmf_entry(&params->tags, fcc, optarg,
+                aacenc_add_tag_to_store(&params->tags, fcc, optarg,
-                                            val, strlen(val),
+                                        val, strlen(val),
-                                            ch == OPT_SHORT_TAG_FILE);
+                                        ch == OPT_SHORT_TAG_FILE);
             }
             break;
         case OPT_TAG_FROM_JSON:
@@ -472,16 +491,15 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 };
 
 static
-int write_sample(FILE *ofp, m4af_ctx_t *m4af,
+int write_sample(FILE *ofp, m4af_ctx_t *m4af, aacenc_frame_t *frame)
-                 const void *data, uint32_t size, uint32_t duration)
 {
     if (!m4af) {
-        fwrite(data, 1, size, ofp);
+        fwrite(frame->data, 1, frame->size, ofp);
         if (ferror(ofp)) {
             fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
             return -1;
         }
-    } else if (m4af_write_sample(m4af, 0, data, size, duration) < 0) {
+    } else if (m4af_write_sample(m4af, 0, frame->data, frame->size, 0) < 0) {
         fprintf(stderr, "ERROR: failed to write m4a sample\n");
         return -1;
     }
@@ -489,51 +507,85 @@ int write_sample(FILE *ofp, m4af_ctx_t *m4af,
 }
 
 static
-int encode(pcm_reader_t *reader, HANDLE_AACENCODER encoder,
+int encode(aacenc_param_ex_t *params, pcm_reader_t *reader,
-           uint32_t frame_length, FILE *ofp, m4af_ctx_t *m4af,
+           HANDLE_AACENCODER encoder, uint32_t frame_length, 
-           int show_progress)
+           m4af_ctx_t *m4af)
 {
-    int16_t *ibuf = 0;
+    int16_t *ibuf = 0, *ip;
-    uint8_t *obuf = 0;
+    aacenc_frame_t obuf[2] = {{ 0 }}, *obp;
-    uint32_t olen;
+    unsigned flip = 0;
-    uint32_t osize = 0;
     int nread = 1;
-    int consumed;
     int rc = -1;
-    int frames_written = 0;
+    int remaining, consumed;
+    int frames_written = 0, encoded = 0;
     aacenc_progress_t progress = { 0 };
     const pcm_sample_description_t *fmt = pcm_get_format(reader);
 
     ibuf = malloc(frame_length * fmt->bytes_per_frame);
     aacenc_progress_init(&progress, pcm_get_length(reader), fmt->sample_rate);
-    do {
+
+    for (;;) {
+        /*
+         * Since we delay the write, we cannot just exit loop when interrupted.
+         * Instead, we regard it as EOF.
+         */
         if (g_interrupted)
             nread = 0;
-        else if (nread) {
+        if (nread > 0) {
             if ((nread = pcm_read_frames(reader, ibuf, frame_length)) < 0) {
                 fprintf(stderr, "ERROR: read failed\n");
                 goto END;
             }
-            if (show_progress)
+            if (!params->silent)
                 aacenc_progress_update(&progress, pcm_get_position(reader),
                                        fmt->sample_rate * 2);
         }
-        if ((consumed = aac_encode_frame(encoder, fmt, ibuf, nread,
+        ip = ibuf;
-                                         &obuf, &olen, &osize)) < 0)
+        remaining = nread;
-            goto END;
+        do {
-        if (olen > 0) {
+            obp = &obuf[flip];
-            if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
+            consumed = aac_encode_frame(encoder, fmt, ip, remaining, obp);
+            if (consumed < 0) goto END;
+            if (consumed == 0 && obp->size == 0) goto DONE;
+            if (obp->size == 0) break;
+
+            remaining -= consumed;
+            ip += consumed * fmt->channels_per_frame;
+            flip ^= 1;
+            /*
+             * As we pad 1 frame at beginning and ending by our extrapolator,
+             * we want to drop them.
+             * We delay output by 1 frame by double buffering, and discard
+             * second frame and final frame from the encoder.
+             * Since sbr_header is included in the first frame (in case of
+             * SBR), we cannot discard first frame. So we pick second instead.
+             */
+            ++encoded;
+            if (encoded == 1 || encoded == 3)
+                continue;
+
+            if (write_sample(params->output_fp, m4af, &obuf[flip]) < 0)
+                goto END;
+            ++frames_written;
+        } while (remaining > 0);
+        /*
+         * When interrupted, we haven't pulled out last extrapolated frames
+         * from the reader. Therefore, we have to write the final outcome.
+         */
+        if (g_interrupted) {
+            if (write_sample(params->output_fp, m4af, &obp[flip^1]) < 0)
                 goto END;
             ++frames_written;
         }
-    } while (nread > 0 || olen > 0);
+    }
-
+DONE:
-    if (show_progress)
+    if (!params->silent)
         aacenc_progress_finish(&progress, pcm_get_position(reader));
     rc = frames_written;
 END:
     if (ibuf) free(ibuf);
-    if (obuf) free(obuf);
+    if (obuf[0].data) free(obuf[0].data);
+    if (obuf[1].data) free(obuf[1].data);
     return rc;
 }
 
@@ -543,19 +595,11 @@ void put_tool_tag(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
 {
     char tool_info[256];
     char *p = tool_info;
-    LIB_INFO *lib_info = 0;
+    LIB_INFO lib_info;
 
     p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
-
+    aacenc_get_lib_info(&lib_info);
-    lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
+    p += sprintf(p, "libfdk-aac %s, ", lib_info.versionStr);
-    if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
-        int i;
-        for (i = 0; i < FDK_MODULE_LAST; ++i)
-            if (lib_info[i].module_id == FDK_AACENC)
-                break;
-        p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
-    }
-    free(lib_info);
     if (params->bitrate_mode)
         sprintf(p, "VBR mode %d", params->bitrate_mode);
     else
@@ -570,13 +614,18 @@ int finalize_m4a(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
                  HANDLE_AACENCODER encoder)
 {
     unsigned i;
-    aacenc_tag_entry_t *tag = params->tags.tag_table;
+    aacenc_tag_entry_t *tag;
+    
+    tag = params->source_tags.tag_table;
+    for (i = 0; i < params->source_tags.tag_count; ++i, ++tag)
+        aacenc_write_tag_entry(m4af, tag);
 
     if (params->json_filename)
-        aacenc_put_tags_from_json(m4af, params->json_filename);
+        aacenc_write_tags_from_json(m4af, params->json_filename);
 
+    tag = params->tags.tag_table;
     for (i = 0; i < params->tags.tag_count; ++i, ++tag)
-        aacenc_put_tag_entry(m4af, tag);
+        aacenc_write_tag_entry(m4af, tag);
 
     put_tool_tag(m4af, params, encoder);
 
@@ -602,7 +651,7 @@ char *generate_output_filename(const char *filename, const char *ext)
         const char *ext_org = strrchr(base, '.');
         if (ext_org) ilen = ext_org - base;
         p = malloc(ilen + ext_len + 1);
-        sprintf(p, "%.*s%s", ilen, base, ext);
+        sprintf(p, "%.*s%s", (int)ilen, base, ext);
     }
     return p;
 }
@@ -643,49 +692,78 @@ int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
     return 0;
 }
 
+static pcm_io_vtbl_t pcm_io_vtbl = {
+    read_callback, seek_callback, tell_callback
+};
+static pcm_io_vtbl_t pcm_io_vtbl_noseek = { read_callback, 0, tell_callback };
+
 static
 pcm_reader_t *open_input(aacenc_param_ex_t *params)
 {
-    wav_io_context_t wav_io = {
+    pcm_io_context_t io = { 0 };
-        read_callback, seek_callback, tell_callback
-    };
     pcm_reader_t *reader = 0;
     struct stat stb = { 0 };
 
     if ((params->input_fp = aacenc_fopen(params->input_filename, "rb")) == 0) {
         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params->input_filename,
                        strerror(errno));
-        goto END;
+        goto FAIL;
     }
+    io.cookie = params->input_fp;
     if (fstat(fileno(params->input_fp), &stb) == 0
-            && (stb.st_mode & S_IFMT) != S_IFREG) {
+            && (stb.st_mode & S_IFMT) == S_IFREG)
-        wav_io.seek = 0;
+        io.vtbl = &pcm_io_vtbl;
-        wav_io.tell = 0;
+    else
-    }
+        io.vtbl = &pcm_io_vtbl_noseek;
+
     if (params->is_raw) {
         int bytes_per_channel;
         pcm_sample_description_t desc = { 0 };
         if (parse_raw_spec(params->raw_format, &desc) < 0) {
             fprintf(stderr, "ERROR: invalid raw-format spec\n");
-            goto END;
+            goto FAIL;
         }
         desc.sample_rate = params->raw_rate;
         desc.channels_per_frame = params->raw_channels;
         bytes_per_channel = (desc.bits_per_channel + 7) / 8;
         desc.bytes_per_frame = params->raw_channels * bytes_per_channel;
-        if ((reader = raw_open(&wav_io, params->input_fp, &desc)) == 0) {
+        if ((reader = raw_open(&io, &desc)) == 0) {
             fprintf(stderr, "ERROR: failed to open raw input\n");
-            goto END;
+            goto FAIL;
         }
     } else {
-        if ((reader = wav_open(&wav_io, params->input_fp,
+        int c;
-                               params->ignore_length)) == 0) {
+        ungetc(c = getc(params->input_fp), params->input_fp);
-            fprintf(stderr, "ERROR: broken / unsupported input file\n");
+
-            goto END;
+        switch (c) {
+        case 'R':
+            if ((reader = wav_open(&io, params->ignore_length)) == 0) {
+                fprintf(stderr, "ERROR: broken / unsupported input file\n");
+                goto FAIL;
+            }
+            break;
+        case 'c':
+            params->source_tag_ctx.add = aacenc_add_tag_entry_to_store;
+            params->source_tag_ctx.add_ctx = &params->source_tags;
+            if ((reader = caf_open(&io,
+                                   aacenc_translate_generic_text_tag,
+                                   &params->source_tag_ctx)) == 0) {
+                fprintf(stderr, "ERROR: broken / unsupported input file\n");
+                goto FAIL;
+            }
+            break;
+        default:
+            fprintf(stderr, "ERROR: unsupported input file\n");
+            goto FAIL;
         }
     }
-    return pcm_open_sint16_converter(reader);
+    reader = pcm_open_native_converter(reader);
-END:
+    if (reader && PCM_IS_FLOAT(pcm_get_format(reader)))
+        reader = limiter_open(reader);
+    if (reader && (reader = pcm_open_sint16_converter(reader)) != 0)
+        reader = extrapolater_open(reader);
+    return reader;
+FAIL:
     return 0;
 }
 
@@ -703,8 +781,9 @@ int main(int argc, char **argv)
     AACENC_InfoStruct aacinfo = { 0 };
     m4af_ctx_t *m4af = 0;
     const pcm_sample_description_t *sample_format;
-    int downsampled_timescale = 0;
     int frame_count = 0;
+    int sbr_mode = 0;
+    unsigned scale_shift = 0;
 
     setlocale(LC_CTYPE, "");
     setbuf(stderr, 0);
@@ -717,6 +796,19 @@ int main(int argc, char **argv)
 
     sample_format = pcm_get_format(reader);
 
+    sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
+    if (sbr_mode && !aacenc_is_sbr_ratio_available()) {
+        fprintf(stderr, "WARNING: Only dual-rate SBR is available "
+                        "for this version\n");
+        params.sbr_ratio = 2;
+    }
+    scale_shift = aacenc_is_dual_rate_sbr((aacenc_param_t*)&params);
+    params.sbr_signaling =
+        (params.transport_format == TT_MP4_LOAS) ? 2 :
+        (params.transport_format == TT_MP4_RAW)  ? 1 : 0;
+    if (sbr_mode && !scale_shift)
+        params.sbr_signaling = 2;
+
     if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
                     &aacinfo) < 0)
         goto END;
@@ -733,36 +825,47 @@ int main(int argc, char **argv)
         goto END;
     }
     handle_signals();
+
     if (!params.transport_format) {
         uint32_t scale;
         unsigned framelen = aacinfo.frameLength;
-        int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
+        scale = sample_format->sample_rate >> scale_shift;
-        int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
-        if (sbr_mode && !sig_mode)
-            downsampled_timescale = 1;
-        scale = sample_format->sample_rate >> downsampled_timescale;
         if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io,
                                 params.output_fp)) < 0)
             goto END;
-        m4af_set_decoder_specific_info(m4af, 0, aacinfo.confBuf,
+        m4af_set_num_channels(m4af, 0, sample_format->channels_per_frame);
-                                       aacinfo.confSize);
+        m4af_set_decoder_specific_info(m4af, 0,
-        m4af_set_fixed_frame_duration(m4af, 0,
+                                       aacinfo.confBuf, aacinfo.confSize);
-                                      framelen >> downsampled_timescale);
+        m4af_set_fixed_frame_duration(m4af, 0, framelen >> scale_shift);
         m4af_set_vbr_mode(m4af, 0, params.bitrate_mode);
         m4af_set_priming_mode(m4af, params.gapless_mode + 1);
         m4af_begin_write(m4af);
     }
-    frame_count = encode(reader, encoder, aacinfo.frameLength,
+    if (scale_shift && (aacinfo.encoderDelay & 1)) {
-                         params.output_fp, m4af, !params.silent);
+        /*
+         * Since odd delay cannot be exactly expressed in downsampled scale,
+         * we push one zero frame to the encoder here, to make delay even
+         */
+        int16_t zero[8] = { 0 };
+        aacenc_frame_t frame = { 0 };
+        aac_encode_frame(encoder, sample_format, zero, 1, &frame);
+        free(frame.data);
+    }
+    frame_count = encode(&params, reader, encoder, aacinfo.frameLength, m4af);
     if (frame_count < 0)
         goto END;
     if (m4af) {
         uint32_t delay = aacinfo.encoderDelay;
+        uint32_t padding;
         int64_t frames_read = pcm_get_position(reader);
-        uint32_t padding = frame_count * aacinfo.frameLength
+
-                            - frames_read - aacinfo.encoderDelay;
+        if (sbr_mode && params.profile != AOT_ER_AAC_ELD &&
-        m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
+            !params.include_sbr_delay)
-                         padding >> downsampled_timescale);
+            delay -= 481 << scale_shift;
+        if (scale_shift && (delay & 1))
+            ++delay;
+        padding = frame_count * aacinfo.frameLength - frames_read - delay;
+        m4af_set_priming(m4af, 0, delay >> scale_shift, padding >> scale_shift);
         if (finalize_m4a(m4af, &params, encoder) < 0)
             goto END;
     }
@@ -774,7 +877,10 @@ END:
     if (params.output_fp) fclose(params.output_fp);
     if (encoder) aacEncClose(&encoder);
     if (output_filename) free(output_filename);
-    if (params.tags.tag_table) free(params.tags.tag_table);
+    if (params.tags.tag_table)
+        aacenc_free_tag_store(&params.tags);
+    if (params.source_tags.tag_table)
+        aacenc_free_tag_store(&params.source_tags);
 
     return result;
 }

src/metadata.c

@@ -1,3 +1,7 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
 #if HAVE_CONFIG_H
 #  include "config.h"
 #endif
@@ -50,12 +54,14 @@ static tag_key_mapping_t tag_mapping_table[] = {
     { "copyright",                  M4AF_TAG_COPYRIGHT           },
     { "date",                       M4AF_TAG_DATE                },
     { "disc",                       M4AF_TAG_DISK                },
-    { "disctotal",                  TAG_TOTAL_DISCS              },
     { "discnumber",                 M4AF_TAG_DISK                },
+    { "disctotal",                  TAG_TOTAL_DISCS              },
     { "genre",                      M4AF_TAG_GENRE               },
     { "grouping",                   M4AF_TAG_GROUPING            },
     { "itunescompilation",          M4AF_TAG_COMPILATION         },
     { "lyrics",                     M4AF_TAG_LYRICS              },
+    { "tempo",                      M4AF_TAG_TEMPO               },
+    { "recordeddate",               M4AF_TAG_DATE                },
     { "title",                      M4AF_TAG_TITLE               },
     { "titlesort",                  M4AF_FOURCC('s','o','n','m') },
     { "titlesortorder",             M4AF_FOURCC('s','o','n','m') },
@@ -95,6 +101,7 @@ uint32_t get_tag_fcc_from_name(const char *name)
     return ent ? ent->fcc : 0;
 }
 
+static
 char *aacenc_load_tag_from_file(const char *path, uint32_t *data_size)
 {
     FILE *fp = 0;
@@ -121,48 +128,152 @@ END:
     return data;
 }
 
-void aacenc_param_add_itmf_entry(aacenc_tag_param_t *params, uint32_t tag,
+static
-                                 const char *key, const char *value,
+int aacenc_is_string_tag(uint32_t tag)
-                                 uint32_t size, int is_file_name)
 {
-    aacenc_tag_entry_t *entry;
+    switch (tag) {
+    case M4AF_TAG_TITLE:
+    case M4AF_TAG_ARTIST:
+    case M4AF_TAG_ALBUM:
+    case M4AF_TAG_GENRE:
+    case M4AF_TAG_DATE:
+    case M4AF_TAG_COMPOSER:
+    case M4AF_TAG_GROUPING:
+    case M4AF_TAG_COMMENT:
+    case M4AF_TAG_LYRICS:
+    case M4AF_TAG_TOOL:
+    case M4AF_TAG_ALBUM_ARTIST:
+    case M4AF_TAG_DESCRIPTION:
+    case M4AF_TAG_LONG_DESCRIPTION:
+    case M4AF_TAG_COPYRIGHT:
+    case M4AF_FOURCC('a','p','I','D'):
+    case M4AF_FOURCC('c','a','t','g'):
+    case M4AF_FOURCC('k','e','y','w'):
+    case M4AF_FOURCC('p','u','r','d'):
+    case M4AF_FOURCC('p','u','r','l'):
+    case M4AF_FOURCC('s','o','a','a'):
+    case M4AF_FOURCC('s','o','a','l'):
+    case M4AF_FOURCC('s','o','a','r'):
+    case M4AF_FOURCC('s','o','c','o'):
+    case M4AF_FOURCC('s','o','n','m'):
+    case M4AF_FOURCC('s','o','s','n'):
+    case M4AF_FOURCC('t','v','e','n'):
+    case M4AF_FOURCC('t','v','n','n'):
+    case M4AF_FOURCC('t','v','s','h'):
+    case M4AF_FOURCC('x','i','d',' '):
+    case M4AF_FOURCC('\xa9','e','n','c'):
+    case M4AF_FOURCC('\xa9','s','t','3'):
+    case M4AF_FOURCC('-','-','-','-'):
+        return 1;
+    }
+    return 0;
+}
+
+void aacenc_add_tag_to_store(aacenc_tag_store_t *store, uint32_t tag,
+                             const char *key, const char *value,
+                             uint32_t size, int is_file_name)
+{
+    aacenc_tag_entry_t entry = { 0 };
+    char *dp = 0;
 
     if (!is_file_name && !size)
         return;
-    if (params->tag_count == params->tag_table_capacity) {
+    entry.tag = tag;
-        unsigned newsize = params->tag_table_capacity;
-        newsize = newsize ? newsize * 2 : 1;
-        params->tag_table =
-            realloc(params->tag_table, newsize * sizeof(aacenc_tag_entry_t));
-        params->tag_table_capacity = newsize;
-    }
-    entry = params->tag_table + params->tag_count;
-    entry->tag = tag;
     if (tag == M4AF_FOURCC('-','-','-','-'))
-        entry->name = key;
+        entry.name = (char *)key;
-    entry->data = value;
+
-    entry->data_size = size;
+    if (is_file_name) {
-    entry->is_file_name = is_file_name;
+        entry.data = dp = aacenc_load_tag_from_file(value, &size);
-    params->tag_count++;
+        entry.data_size = size;
+    } else if (aacenc_is_string_tag(tag)) {
+        entry.data = dp = aacenc_to_utf8(value);
+        entry.data_size = strlen(entry.data);
+    } else {
+        entry.data = (char *)value;
+        entry.data_size = size;
+    }
+    aacenc_add_tag_entry_to_store(store, &entry);
+    free(dp);
+}
+
+void aacenc_add_tag_entry_to_store(void *ctx, const aacenc_tag_entry_t *tag)
+{
+    aacenc_tag_store_t *store = ctx;
+    aacenc_tag_entry_t *entry;
+    if (store->tag_count == store->tag_table_capacity) {
+        unsigned newsize = store->tag_table_capacity;
+        newsize = newsize ? newsize * 2 : 1;
+        store->tag_table =
+            realloc(store->tag_table, newsize * sizeof(aacenc_tag_entry_t));
+        store->tag_table_capacity = newsize;
+    }
+    entry = store->tag_table + store->tag_count;
+    entry->tag  = tag->tag;
+    entry->data_size = tag->data_size;
+    entry->name = tag->name ? strdup(tag->name) : 0;
+    entry->data = malloc(tag->data_size + 1);
+    memcpy(entry->data, tag->data, tag->data_size);
+    entry->data[tag->data_size] = 0;
+    store->tag_count++;
 }
 
 static
-void tag_put_number_pair(m4af_ctx_t *m4af, uint32_t fcc,
+void tag_put_number_pair(aacenc_translate_generic_text_tag_ctx_t *ctx,
-                         const char *snumber, const char *stotal)
+                         uint32_t fcc, unsigned number, unsigned total)
 {
-    unsigned number = 0, total = 0;
     char buf[128];
     aacenc_tag_entry_t entry = { 0 };
 
-    if (snumber) sscanf(snumber, "%u", &number);
-    if (stotal)  sscanf(stotal,  "%u", &total);
     if (number) {
         if (total) sprintf(buf, "%u/%u", number, total);
         else       sprintf(buf, "%u",    number);
         entry.tag = fcc;
         entry.data = buf;
         entry.data_size = strlen(buf);
-        aacenc_put_tag_entry(m4af, &entry);
+        ctx->add(ctx->add_ctx, &entry);
+    }
+}
+
+void aacenc_translate_generic_text_tag(void *pctx, const char *key,
+                                       const char *val, uint32_t size)
+{
+    aacenc_translate_generic_text_tag_ctx_t *ctx = pctx;
+    aacenc_tag_entry_t entry = { 0 };
+    uint32_t fcc;
+    /*
+     * Since track/disc number pair (number and total) can be stored within
+     * either single tag or separately, we cannot instantly translate
+     * them in one-to-one manner.
+     * Instead, we keep and store them until all tags are processed,
+     * then finally submit.
+     */
+    if (!key) {
+        /* use null key as flushing signal */
+        tag_put_number_pair(ctx, M4AF_TAG_TRACK, ctx->track, ctx->track_total);
+        tag_put_number_pair(ctx, M4AF_TAG_DISK,  ctx->disc,  ctx->disc_total);
+        return;
+    }
+    if (!val || !size)
+        return;
+    if ((fcc = get_tag_fcc_from_name(key)) == 0)
+        return;
+
+    switch (fcc) {
+    case TAG_TOTAL_DISCS:
+        sscanf(val, "%d", &ctx->disc_total); break;
+    case TAG_TOTAL_TRACKS:
+        sscanf(val, "%d", &ctx->track_total); break;
+    case M4AF_TAG_DISK:
+        sscanf(val, "%d/%d", &ctx->disc, &ctx->disc_total); break;
+    case M4AF_TAG_TRACK:
+        sscanf(val, "%d/%d", &ctx->track, &ctx->track_total); break;
+    default:
+        {
+            entry.tag = fcc;
+            entry.data = (char *)val;
+            entry.data_size = (size == ~0U) ? strlen(val) : size;
+            ctx->add(ctx->add_ctx, &entry);
+        }
     }
 }
 
@@ -188,7 +299,7 @@ const char *aacenc_json_object_get_string(JSON_Object *obj, const char *key,
     return val;
 }
 
-void aacenc_put_tags_from_json(m4af_ctx_t *m4af, const char *json_filename)
+void aacenc_write_tags_from_json(m4af_ctx_t *m4af, const char *json_filename)
 {
     char *data = 0;
     JSON_Value *json = 0;
@@ -197,12 +308,11 @@ void aacenc_put_tags_from_json(m4af_ctx_t *m4af, const char *json_filename)
     uint32_t data_size;
     char *json_dot_path;
     char *filename = 0;
-    char *disc = 0;
+    aacenc_translate_generic_text_tag_ctx_t ctx = { 0 };
-    char *track = 0;
+
-    char *total_discs = 0;
+    ctx.add = aacenc_write_tag_entry;
-    char *total_tracks = 0;
+    ctx.add_ctx = m4af;
-    aacenc_tag_entry_t entry = { 0 };
+
-    
     filename = strdup(json_filename);
     if ((json_dot_path = strchr(filename, '?')) != 0)
         *json_dot_path++ = '\0';
@@ -226,59 +336,36 @@ void aacenc_put_tags_from_json(m4af_ctx_t *m4af, const char *json_filename)
         char buf[256];
         const char *key = json_object_get_name(root, i);
         const char *val = aacenc_json_object_get_string(root, key, buf);
-        uint32_t fcc = get_tag_fcc_from_name(key);
+        if (val) aacenc_translate_generic_text_tag(&ctx, key, val, ~0U);
-        if (!val || !fcc)
-            continue;
-
-        switch (fcc) {
-        case TAG_TOTAL_DISCS:
-            total_discs = realloc(total_discs, strlen(val) + 1);
-            strcpy(total_discs, val);
-            break;
-        case TAG_TOTAL_TRACKS:
-            total_tracks = realloc(total_tracks, strlen(val) + 1);
-            strcpy(total_tracks, val);
-            break;
-        case M4AF_TAG_DISK:
-            disc = realloc(disc, strlen(val) + 1);
-            strcpy(disc, val);
-            break;
-        case M4AF_TAG_TRACK:
-            track = realloc(track, strlen(val) + 1);
-            strcpy(track, val);
-            break;
-        default:
-            {
-                entry.tag = fcc;
-                entry.data = val;
-                entry.data_size = strlen(val);
-                aacenc_put_tag_entry(m4af, &entry);
-            }
-        }
     }
-    tag_put_number_pair(m4af, M4AF_TAG_TRACK, track, total_tracks);
+    aacenc_translate_generic_text_tag(&ctx, 0, 0, 0);
-    tag_put_number_pair(m4af, M4AF_TAG_DISK,  disc,  total_discs);
 DONE:
-    if (track) free(track);
-    if (disc) free(disc);
-    if (total_tracks) free(total_tracks);
-    if (total_discs) free(total_discs);
     if (data) free(data);
     if (filename) free(filename);
     if (json) json_value_free(json);
 }
 
-void aacenc_put_tag_entry(m4af_ctx_t *m4af, const aacenc_tag_entry_t *tag)
+void aacenc_free_tag_store(aacenc_tag_store_t *store)
 {
+    if (store->tag_table) {
+        unsigned i;
+        for (i = 0; i < store->tag_count; ++i) {
+            aacenc_tag_entry_t *ent = &store->tag_table[i];
+            free(ent->name);
+            free(ent->data);
+        }
+        free(store->tag_table);
+        store->tag_table = 0;
+        store->tag_count = 0;
+    }
+}
+
+void aacenc_write_tag_entry(void *ctx, const aacenc_tag_entry_t *tag)
+{
+    m4af_ctx_t *m4af = ctx;
     unsigned m, n = 0;
     const char *data = tag->data;
-    uint32_t data_size = tag->data_size;
-    char *file_contents = 0;
 
-    if (tag->is_file_name) {
-        data = file_contents = aacenc_load_tag_from_file(tag->data, &data_size);
-        if (!data) return;
-    }
     switch (tag->tag) {
     case M4AF_TAG_TRACK:
         if (sscanf(data, "%u/%u", &m, &n) >= 1)
@@ -334,59 +421,22 @@ void aacenc_put_tag_entry(m4af_ctx_t *m4af, const aacenc_tag_entry_t *tag)
                 data_type = M4AF_PNG;
             if (data_type)
                 m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
-                                        data, data_size);
+                                        data, tag->data_size);
             break;
         }
     case M4AF_FOURCC('-','-','-','-'):
         {
-            char *u8 = aacenc_to_utf8(data);
+            m4af_add_itmf_long_tag(m4af, tag->name, data);
-            m4af_add_itmf_long_tag(m4af, tag->name, u8);
-            free(u8);
-            break;
-        }
-    case M4AF_TAG_TITLE:
-    case M4AF_TAG_ARTIST:
-    case M4AF_TAG_ALBUM:
-    case M4AF_TAG_GENRE:
-    case M4AF_TAG_DATE:
-    case M4AF_TAG_COMPOSER:
-    case M4AF_TAG_GROUPING:
-    case M4AF_TAG_COMMENT:
-    case M4AF_TAG_LYRICS:
-    case M4AF_TAG_TOOL:
-    case M4AF_TAG_ALBUM_ARTIST:
-    case M4AF_TAG_DESCRIPTION:
-    case M4AF_TAG_LONG_DESCRIPTION:
-    case M4AF_TAG_COPYRIGHT:
-    case M4AF_FOURCC('a','p','I','D'):
-    case M4AF_FOURCC('c','a','t','g'):
-    case M4AF_FOURCC('k','e','y','w'):
-    case M4AF_FOURCC('p','u','r','d'):
-    case M4AF_FOURCC('p','u','r','l'):
-    case M4AF_FOURCC('s','o','a','a'):
-    case M4AF_FOURCC('s','o','a','l'):
-    case M4AF_FOURCC('s','o','a','r'):
-    case M4AF_FOURCC('s','o','c','o'):
-    case M4AF_FOURCC('s','o','n','m'):
-    case M4AF_FOURCC('s','o','s','n'):
-    case M4AF_FOURCC('t','v','e','n'):
-    case M4AF_FOURCC('t','v','n','n'):
-    case M4AF_FOURCC('t','v','s','h'):
-    case M4AF_FOURCC('x','i','d',' '):
-    case M4AF_FOURCC('\xa9','e','n','c'):
-    case M4AF_FOURCC('\xa9','s','t','3'):
-        {
-            char *u8 = aacenc_to_utf8(data);
-            m4af_add_itmf_string_tag(m4af, tag->tag, u8);
-            free(u8);
             break;
         }
     default:
-        fprintf(stderr, "WARNING: unknown/unsupported tag: %c%c%c%c\n",
+        if (aacenc_is_string_tag(tag->tag))
-                tag->tag >> 24, (tag->tag >> 16) & 0xff,
+            m4af_add_itmf_string_tag(m4af, tag->tag, data);
-                (tag->tag >> 8) & 0xff, tag->tag & 0xff);
+        else
+            fprintf(stderr, "WARNING: unknown/unsupported tag: %c%c%c%c\n",
+                    tag->tag >> 24, (tag->tag >> 16) & 0xff,
+                    (tag->tag >> 8) & 0xff, tag->tag & 0xff);
     }
-    if (file_contents) free(file_contents);
 }
 
 

src/metadata.h

@@ -1,28 +1,48 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
 #ifndef METADATA_H
 #define METADATA_H
 
+#include "m4af.h"
+
 typedef struct aacenc_tag_entry_t {
-    uint32_t    tag;
+    uint32_t tag;
-    const char *name;
+    char    *name;
-    const char *data;
+    char    *data;
-    uint32_t    data_size;
+    uint32_t data_size;
-    int         is_file_name;
 } aacenc_tag_entry_t;
 
-typedef struct aacenc_tag_param_t {
+typedef struct aacenc_tag_store_t {
     aacenc_tag_entry_t *tag_table;
     unsigned tag_count;
     unsigned tag_table_capacity;
-} aacenc_tag_param_t;
+} aacenc_tag_store_t;
 
-char *aacenc_load_tag_from_file(const char *path, uint32_t *data_size);
+typedef struct aacenc_translate_generic_text_tag_ctx_t {
+    unsigned track, track_total, disc, disc_total;
+    void   (*add)(void *, const aacenc_tag_entry_t *);
+    void    *add_ctx;
+} aacenc_translate_generic_text_tag_ctx_t;
 
-void aacenc_param_add_itmf_entry(aacenc_tag_param_t *params, uint32_t tag,
+typedef void (*aacenc_tag_callback_t)(void *ctx, const char *key,
-                                 const char *key, const char *value,
+                                      const char *value, uint32_t size);
-                                 uint32_t size, int is_file_name);
 
-void aacenc_put_tags_from_json(m4af_ctx_t *m4af, const char *json_filename);
+void aacenc_translate_generic_text_tag(void *ctx, const char *key,
+                                       const char *val, uint32_t size);
 
-void aacenc_put_tag_entry(m4af_ctx_t *m4af, const aacenc_tag_entry_t *tag);
+
+void aacenc_add_tag_to_store(aacenc_tag_store_t *store, uint32_t tag,
+                             const char *key, const char *value,
+                             uint32_t size, int is_file_name);
+
+void aacenc_add_tag_entry_to_store(void *store, const aacenc_tag_entry_t *tag);
+
+void aacenc_free_tag_store(aacenc_tag_store_t *store);
+
+void aacenc_write_tags_from_json(m4af_ctx_t *m4af, const char *json_filename);
+
+void aacenc_write_tag_entry(void *m4af, const aacenc_tag_entry_t *tag);
 
 #endif

src/pcm_float_converter.c

@@ -0,0 +1,85 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+#include "pcm_reader.h"
+
+typedef struct pcm_float_converter_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_reader_t *src;
+    pcm_sample_description_t format;
+} pcm_float_converter_t;
+
+static inline pcm_reader_t *get_source(pcm_reader_t *reader)
+{
+    return ((pcm_float_converter_t *)reader)->src;
+}
+
+static const
+pcm_sample_description_t *get_format(pcm_reader_t *reader)
+{
+    return &((pcm_float_converter_t *)reader)->format;
+}
+
+static int64_t get_length(pcm_reader_t *reader)
+{
+    return pcm_get_length(get_source(reader));
+}
+
+static int64_t get_position(pcm_reader_t *reader)
+{
+    return pcm_get_position(get_source(reader));
+}
+
+static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
+{
+    unsigned i;
+    pcm_float_converter_t *self = (pcm_float_converter_t *)reader;
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    nframes = pcm_read_frames(self->src, buffer, nframes);
+    if (!(sfmt->sample_type & PCM_TYPE_FLOAT)) {
+        int32_t *ip = buffer;
+        float   *op = buffer;
+        unsigned i, count = nframes * sfmt->channels_per_frame;
+        for (i = 0; i < count; ++i)
+            op[i] = ip[i] / 2147483648.0f;
+    }
+    return nframes;
+}
+
+static void teardown(pcm_reader_t **reader)
+{
+    pcm_float_converter_t *self = (pcm_float_converter_t *)*reader;
+    pcm_teardown(&self->src);
+    free(self);
+    *reader = 0;
+}
+
+static pcm_reader_vtbl_t my_vtable = {
+    get_format, get_length, get_position, read_frames, teardown
+};
+
+pcm_reader_t *pcm_open_float_converter(pcm_reader_t *reader)
+{
+    pcm_float_converter_t *self = 0;
+    pcm_sample_description_t *fmt;
+
+    if ((self = calloc(1, sizeof(pcm_float_converter_t))) == 0)
+        return 0;
+    self->src = reader;
+    self->vtbl = &my_vtable;
+    memcpy(&self->format, pcm_get_format(reader), sizeof(self->format));
+    fmt = &self->format;
+    fmt->bits_per_channel = 32;
+    fmt->sample_type = PCM_TYPE_FLOAT;
+    fmt->bytes_per_frame = 4 * fmt->channels_per_frame;
+    return (pcm_reader_t *)self;
+}

src/pcm_native_converter.c

@@ -0,0 +1,272 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+#include "m4af_endian.h"
+#include "pcm_reader.h"
+
+static
+inline float pcm_i2f(int32_t n)
+{
+    union {
+        int32_t ivalue;
+        float fvalue;
+    } u;
+    u.ivalue = n;
+    return u.fvalue;
+}
+static
+inline double pcm_i2d(int64_t n)
+{
+    union {
+        int64_t ivalue;
+        double fvalue;
+    } u;
+    u.ivalue = n;
+    return u.fvalue;
+}
+static
+inline int32_t pcm_s8_to_s32(int8_t n)
+{
+    return n << 24;
+}
+static
+inline int32_t pcm_u8_to_s32(uint8_t n)
+{
+    return (n << 24) ^ 0x80000000;
+}
+static
+inline int32_t pcm_s16le_to_s32(int16_t n)
+{
+    return m4af_ltoh16(n) << 16;
+}
+static
+inline int32_t pcm_s16be_to_s32(int16_t n)
+{
+    return m4af_btoh16(n) << 16;
+}
+static
+inline int32_t pcm_u16le_to_s32(uint16_t n)
+{
+    return (m4af_ltoh16(n) << 16) ^ 0x80000000;
+}
+static
+inline int32_t pcm_u16be_to_s32(uint16_t n)
+{
+    return (m4af_btoh16(n) << 16) ^ 0x80000000;
+}
+static
+inline int32_t pcm_s24le_to_s32(uint8_t *p)
+{
+    return p[0]<<8 | p[1]<<16 | p[2]<<24;
+}
+static
+inline int32_t pcm_s24be_to_s32(uint8_t *p)
+{
+    return p[0]<<24 | p[1]<<16 | p[2]<<8;
+}
+static
+inline int32_t pcm_u24le_to_s32(uint8_t *p)
+{
+    return pcm_s24le_to_s32(p) ^ 0x80000000;
+}
+static
+inline int32_t pcm_u24be_to_s32(uint8_t *p)
+{
+    return pcm_s24be_to_s32(p) ^ 0x80000000;
+}
+static
+inline int32_t pcm_s32le_to_s32(int32_t n)
+{
+    return m4af_ltoh32(n);
+}
+static
+inline int32_t pcm_s32be_to_s32(int32_t n)
+{
+    return m4af_btoh32(n);
+}
+static
+inline int32_t pcm_u32le_to_s32(int32_t n)
+{
+    return m4af_ltoh32(n) ^ 0x80000000;
+}
+static
+inline int32_t pcm_u32be_to_s32(int32_t n)
+{
+    return m4af_btoh32(n) ^ 0x80000000;
+}
+static
+inline float pcm_f32le_to_f32(int32_t n)
+{
+    return pcm_i2f(m4af_ltoh32(n));
+}
+static
+inline float pcm_f32be_to_f32(int32_t n)
+{
+    return pcm_i2f(m4af_btoh32(n));
+}
+static
+inline float pcm_f64le_to_f32(int64_t n)
+{
+    return pcm_i2d(m4af_ltoh64(n));
+}
+static
+inline float pcm_f64be_to_f32(int64_t n)
+{
+    return pcm_i2d(m4af_btoh64(n));
+}
+
+static
+int pcm_convert_to_native(const pcm_sample_description_t *format,
+                          const void *input, uint32_t nframes,
+                          void *result)
+{
+#define CONVERT(type, rtype, conv) \
+    do { \
+        unsigned i; \
+        type *ip = (type *)input; \
+        for (i = 0; i < count; ++i) { \
+            ((rtype *)result)[i] = conv(ip[i]); \
+        } \
+    } while(0)
+
+#define CONVERT_BYTES(rtype, conv) \
+    do { \
+        unsigned i, bytes_per_channel; \
+        uint8_t *ip = (uint8_t *)input; \
+        bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \
+        for (i = 0; i < count; ++i) { \
+            ((rtype *)result)[i] = conv(ip); \
+            ip += bytes_per_channel; \
+        } \
+    } while(0)
+
+    uint32_t count = nframes * format->channels_per_frame;
+    if (!count)
+        return 0;
+    switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) {
+    case 1 | PCM_TYPE_SINT<<4:
+        CONVERT(int8_t, int32_t, pcm_s8_to_s32); break;
+    case 1 | PCM_TYPE_UINT<<4:
+        CONVERT(uint8_t, int32_t, pcm_u8_to_s32); break;
+    case 2 | PCM_TYPE_SINT<<4:
+        CONVERT(int16_t, int32_t, pcm_s16le_to_s32); break;
+    case 2 | PCM_TYPE_UINT<<4:
+        CONVERT(uint16_t, int32_t, pcm_u16le_to_s32); break;
+    case 2 | PCM_TYPE_SINT_BE<<4:
+        CONVERT(int16_t, int32_t, pcm_s16be_to_s32); break;
+    case 2 | PCM_TYPE_UINT_BE<<4:
+        CONVERT(int16_t, int32_t, pcm_u16be_to_s32); break;
+    case 3 | PCM_TYPE_SINT<<4:
+        CONVERT_BYTES(int32_t, pcm_s24le_to_s32); break;
+    case 3 | PCM_TYPE_UINT<<4:
+        CONVERT_BYTES(int32_t, pcm_u24le_to_s32); break;
+    case 3 | PCM_TYPE_SINT_BE<<4:
+        CONVERT_BYTES(int32_t, pcm_s24be_to_s32); break;
+    case 3 | PCM_TYPE_UINT_BE<<4:
+        CONVERT_BYTES(int32_t, pcm_u24be_to_s32); break;
+    case 4 | PCM_TYPE_SINT<<4:
+        CONVERT(int32_t, int32_t, pcm_s32le_to_s32); break;
+    case 4 | PCM_TYPE_UINT<<4:
+        CONVERT(uint32_t, int32_t, pcm_u32le_to_s32); break;
+    case 4 | PCM_TYPE_FLOAT<<4:
+        CONVERT(int32_t, float, pcm_f32le_to_f32); break;
+    case 4 | PCM_TYPE_SINT_BE<<4:
+        CONVERT(int32_t, int32_t, pcm_s32be_to_s32); break;
+    case 4 | PCM_TYPE_UINT_BE<<4:
+        CONVERT(uint32_t, int32_t, pcm_u32be_to_s32); break;
+    case 4 | PCM_TYPE_FLOAT_BE<<4:
+        CONVERT(int32_t, float, pcm_f32be_to_f32); break;
+    case 8 | PCM_TYPE_FLOAT<<4:
+        CONVERT(int64_t, float, pcm_f64le_to_f32); break;
+    case 8 | PCM_TYPE_FLOAT_BE<<4:
+        CONVERT(int64_t, float, pcm_f64be_to_f32); break;
+    default:
+        return -1;
+    }
+    return 0;
+}
+
+typedef struct pcm_native_converter_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_reader_t *src;
+    pcm_sample_description_t format;
+    void *pivot;
+    unsigned capacity;
+} pcm_native_converter_t;
+
+static inline pcm_reader_t *get_source(pcm_reader_t *reader)
+{
+    return ((pcm_native_converter_t *)reader)->src;
+}
+
+static const
+pcm_sample_description_t *get_format(pcm_reader_t *reader)
+{
+    return &((pcm_native_converter_t *)reader)->format;
+}
+
+static int64_t get_length(pcm_reader_t *reader)
+{
+    return pcm_get_length(get_source(reader));
+}
+
+static int64_t get_position(pcm_reader_t *reader)
+{
+    return pcm_get_position(get_source(reader));
+}
+
+static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
+{
+    pcm_native_converter_t *self = (pcm_native_converter_t *)reader;
+    const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
+    unsigned bytes = nframes * sfmt->bytes_per_frame;
+
+    if (self->capacity < bytes) {
+        void *p = realloc(self->pivot, bytes);
+        if (!p) return -1;
+        self->pivot = p;
+        self->capacity = bytes;
+    }
+    nframes = pcm_read_frames(self->src, self->pivot, nframes);
+    if (pcm_convert_to_native(sfmt, self->pivot, nframes, buffer) < 0)
+        return -1;
+    return nframes;
+}
+
+static void teardown(pcm_reader_t **reader)
+{
+    pcm_native_converter_t *self = (pcm_native_converter_t *)*reader;
+    pcm_teardown(&self->src);
+    free(self->pivot);
+    free(self);
+    *reader = 0;
+}
+
+static pcm_reader_vtbl_t my_vtable = {
+    get_format, get_length, get_position, read_frames, teardown
+};
+
+pcm_reader_t *pcm_open_native_converter(pcm_reader_t *reader)
+{
+    pcm_native_converter_t *self = 0;
+    pcm_sample_description_t *fmt;
+
+    if ((self = calloc(1, sizeof(pcm_native_converter_t))) == 0)
+        return 0;
+    self->src = reader;
+    self->vtbl = &my_vtable;
+    memcpy(&self->format, pcm_get_format(reader), sizeof(self->format));
+    fmt = &self->format;
+    fmt->sample_type = PCM_IS_FLOAT(fmt) ?  PCM_TYPE_FLOAT : PCM_TYPE_SINT;
+    fmt->bytes_per_frame = 4 * fmt->channels_per_frame;
+    return (pcm_reader_t *)self;
+}

src/pcm_reader.h

@@ -1,7 +1,12 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
 #ifndef PCM_READER_H
 #define PCM_READER_H
 
 #include "lpcm.h"
+#include "metadata.h"
 
 typedef struct pcm_reader_t pcm_reader_t;
 
@@ -17,6 +22,21 @@ struct pcm_reader_t {
     pcm_reader_vtbl_t *vtbl;
 };
 
+typedef int (*pcm_read_callback)(void *cookie, void *data, uint32_t count);
+typedef int (*pcm_seek_callback)(void *cookie, int64_t off, int whence);
+typedef int64_t (*pcm_tell_callback)(void *cookie);
+
+typedef struct pcm_io_vtbl_t {
+    pcm_read_callback read;
+    pcm_seek_callback seek;
+    pcm_tell_callback tell;
+} pcm_io_vtbl_t;
+
+typedef struct pcm_io_context_t {
+    pcm_io_vtbl_t *vtbl;
+    void *cookie;
+} pcm_io_context_t;
+
 static inline
 const pcm_sample_description_t *pcm_get_format(pcm_reader_t *r)
 {
@@ -35,11 +55,7 @@ int64_t pcm_get_position(pcm_reader_t *r)
     return r->vtbl->get_position(r);
 }
 
-static inline
+int pcm_read_frames(pcm_reader_t *r, void *data, unsigned nframes);
-int64_t pcm_read_frames(pcm_reader_t *r, void *data, unsigned nframes)
-{
-    return r->vtbl->read_frames(r, data, nframes);
-}
 
 static inline
 void pcm_teardown(pcm_reader_t **r)
@@ -47,6 +63,62 @@ void pcm_teardown(pcm_reader_t **r)
     (*r)->vtbl->teardown(r);
 }
 
+static inline
+uint32_t bitcount(uint32_t bits)
+{
+    bits = (bits & 0x55555555) + (bits >> 1 & 0x55555555);
+    bits = (bits & 0x33333333) + (bits >> 2 & 0x33333333);
+    bits = (bits & 0x0f0f0f0f) + (bits >> 4 & 0x0f0f0f0f);
+    bits = (bits & 0x00ff00ff) + (bits >> 8 & 0x00ff00ff);
+    return (bits & 0x0000ffff) + (bits >>16 & 0x0000ffff);
+}
+
+#define TRY_IO(expr) \
+    do { \
+        if ((expr)) goto FAIL; \
+    } while (0)
+
+#define ENSURE(expr) \
+    do { \
+        if (!(expr)) goto FAIL;\
+    } while (0)
+
+int pcm_read(pcm_io_context_t *io, void *buffer, uint32_t size);
+int pcm_skip(pcm_io_context_t *io, int64_t count);
+
+static inline int pcm_seek(pcm_io_context_t *io, int64_t off, int whence)
+{
+    return io->vtbl->seek ? io->vtbl->seek(io->cookie, off, whence) : -1;
+}
+
+static inline int64_t pcm_tell(pcm_io_context_t *io)
+{
+    return io->vtbl->tell ? io->vtbl->tell(io->cookie) : -1;
+}
+
+int pcm_read16le(pcm_io_context_t *io, uint16_t *value);
+int pcm_read16be(pcm_io_context_t *io, uint16_t *value);
+int pcm_read32le(pcm_io_context_t *io, uint32_t *value);
+int pcm_read32be(pcm_io_context_t *io, uint32_t *value);
+int pcm_read64le(pcm_io_context_t *io, uint64_t *value);
+int pcm_read64be(pcm_io_context_t *io, uint64_t *value);
+int pcm_scanl(pcm_io_context_t *io, const char *fmt, ...);
+int pcm_scanb(pcm_io_context_t *io, const char *fmt, ...);
+
+int apple_chan_chunk(pcm_io_context_t *io, uint32_t chunk_size,
+                     pcm_sample_description_t *fmt, uint8_t *mapping);
+
+pcm_reader_t *wav_open(pcm_io_context_t *io, int ignore_length);
+pcm_reader_t *raw_open(pcm_io_context_t *io,
+                       const pcm_sample_description_t *desc);
+pcm_reader_t *caf_open(pcm_io_context_t *io,
+                       aacenc_tag_callback_t tag_callback, void *tag_ctx);
+
+pcm_reader_t *pcm_open_native_converter(pcm_reader_t *reader);
+pcm_reader_t *pcm_open_float_converter(pcm_reader_t *reader);
 pcm_reader_t *pcm_open_sint16_converter(pcm_reader_t *reader);
 
+pcm_reader_t *extrapolater_open(pcm_reader_t *reader);
+pcm_reader_t *limiter_open(pcm_reader_t *reader);
+
 #endif

src/pcm_readhelper.c

@@ -0,0 +1,376 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+
+#if HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include "pcm_reader.h"
+#include "m4af_endian.h"
+#include "catypes.h"
+
+int pcm_read_frames(pcm_reader_t *r, void *data, unsigned nframes)
+{
+    int n;
+    unsigned count = 0;
+    uint8_t *bp = data;
+    unsigned bpf = pcm_get_format(r)->bytes_per_frame;
+
+    do {
+        n = r->vtbl->read_frames(r, bp, nframes - count);
+        if (n > 0) {
+            count += n;
+            bp += n * bpf;
+        }
+    } while (n > 0 && count < nframes);
+    return count;
+}
+
+int pcm_read(pcm_io_context_t *io, void *buffer, uint32_t size)
+{
+    int rc;
+    uint32_t count = 0;
+    uint8_t *bp = buffer;
+
+    do {
+        rc = io->vtbl->read(io->cookie, bp, size - count);
+        if (rc > 0) {
+            count += rc;
+            bp += rc;
+        }
+    } while (rc > 0 && count < size);
+    return count > 0 ? count : rc;
+}
+
+int pcm_skip(pcm_io_context_t *io, int64_t count)
+{
+    char buff[8192];
+    int rc;
+    pcm_io_vtbl_t *vp = io->vtbl;
+
+    if (count == 0 || pcm_seek(io, count, SEEK_CUR) >= 0)
+        return 0;
+    do {
+        if ((rc = vp->read(io->cookie, buff, count > 8192 ? 8192 : count)) > 0)
+            count -= rc;
+    } while (rc > 0 && count > 0);
+
+    return count == 0 ? 0 : -1;
+}
+
+int pcm_read16le(pcm_io_context_t *io, uint16_t *value)
+{
+    if (pcm_read(io, value, 2) == 2) {
+        *value = m4af_ltoh16(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_read16be(pcm_io_context_t *io, uint16_t *value)
+{
+    if (pcm_read(io, value, 2) == 2) {
+        *value = m4af_btoh16(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_read32le(pcm_io_context_t *io, uint32_t *value)
+{
+    if (pcm_read(io, value, 4) == 4) {
+        *value = m4af_ltoh32(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_read32be(pcm_io_context_t *io, uint32_t *value)
+{
+    if (pcm_read(io, value, 4) == 4) {
+        *value = m4af_btoh32(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_read64le(pcm_io_context_t *io, uint64_t *value)
+{
+    if (pcm_read(io, value, 8) == 8) {
+        *value = m4af_ltoh64(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_read64be(pcm_io_context_t *io, uint64_t *value)
+{
+    if (pcm_read(io, value, 8) == 8) {
+        *value = m4af_btoh64(*value);
+        return 0;
+    }
+    return -1;
+}
+
+int pcm_scanl(pcm_io_context_t *io, const char *fmt, ...)
+{
+    int c, count = 0;
+    va_list ap;
+
+    va_start(ap, fmt);
+    while ((c = *fmt++)) {
+        switch (c) {
+        case 'S':
+            TRY_IO(pcm_read16le(io, va_arg(ap, uint16_t*)));
+            ++count;
+            break;
+        case 'L':
+            TRY_IO(pcm_read32le(io, va_arg(ap, uint32_t*)));
+            ++count;
+            break;
+        case 'Q':
+            TRY_IO(pcm_read64le(io, va_arg(ap, uint64_t*)));
+            ++count;
+            break;
+        }
+    }
+FAIL:
+    va_end(ap);
+    return count;
+}
+
+int pcm_scanb(pcm_io_context_t *io, const char *fmt, ...)
+{
+    int c, count = 0;
+    va_list ap;
+
+    va_start(ap, fmt);
+    while ((c = *fmt++)) {
+        switch (c) {
+        case 'S':
+            TRY_IO(pcm_read16be(io, va_arg(ap, uint16_t*)));
+            ++count;
+            break;
+        case 'L':
+            TRY_IO(pcm_read32be(io, va_arg(ap, uint32_t*)));
+            ++count;
+            break;
+        case 'Q':
+            TRY_IO(pcm_read64be(io, va_arg(ap, uint64_t*)));
+            ++count;
+            break;
+        }
+    }
+FAIL:
+    va_end(ap);
+    return count;
+}
+
+static
+int channel_compare(const void *a, const void *b)
+{
+    return (*(const uint8_t **)a)[0] - (*(const uint8_t **)b)[0];
+}
+
+void apple_translate_channel_labels(uint8_t *channels, unsigned n)
+{
+    unsigned i;
+    char *has_side = strpbrk((char*)channels, "\x0A\x0B");
+
+    for (i = 0; i < n; ++i) {
+        switch (channels[i]) {
+        case kAudioChannelLabel_LeftSurround:
+        case kAudioChannelLabel_RightSurround:
+            if (!has_side) channels[i] += 5; // map to SL/SR
+            break;
+        case kAudioChannelLabel_RearSurroundLeft:
+        case kAudioChannelLabel_RearSurroundRight:
+            if (!has_side) channels[i] -= 28; // map to BL/BR
+            break;
+        case kAudioChannelLabel_Mono:
+            channels[i] = kAudioChannelLabel_Center;
+            break;
+        }
+    }
+}
+
+int apple_chan_chunk(pcm_io_context_t *io, uint32_t chunk_size,
+                     pcm_sample_description_t *fmt, uint8_t *mapping)
+{
+    /*
+     * Although FDK encoder supports upto 5.1ch, we handle upto
+     * 8 channels here.
+     */
+    uint32_t i, mChannelLayoutTag, mChannelBitmap, mNumberChannelDescriptions;
+    uint32_t mask = 0;
+    const uint32_t nchannels = fmt->channels_per_frame;
+    uint8_t channels[9] = { 0 };
+    uint8_t *index[8] = { 0 };
+    const char *layout = 0;
+
+    ENSURE(chunk_size >= 12);
+    TRY_IO(pcm_scanb(io, "LLL", &mChannelLayoutTag, &mChannelBitmap,
+                     &mNumberChannelDescriptions) != 3);
+
+    switch (mChannelLayoutTag) {
+    case kAudioChannelLayoutTag_UseChannelBitmap:
+        ENSURE(bitcount(mChannelBitmap) == nchannels);
+        TRY_IO(pcm_skip(io, chunk_size - 12));
+        fmt->channel_mask = mChannelBitmap;
+        for (i = 0; i < nchannels; ++i)
+            mapping[i] = i;
+        return 0;
+    case kAudioChannelLayoutTag_UseChannelDescriptions:
+        ENSURE(mNumberChannelDescriptions == nchannels);
+        ENSURE(chunk_size >= 12 + nchannels * 20);
+        for (i = 0; i < mNumberChannelDescriptions; ++i) {
+            uint32_t mChannelLabel;
+            TRY_IO(pcm_read32be(io, &mChannelLabel));
+            ENSURE(mChannelLabel && mChannelLabel <= 0xff);
+            channels[i] = mChannelLabel;
+            TRY_IO(pcm_skip(io, 16));
+        }
+        TRY_IO(pcm_skip(io, chunk_size - 12 - nchannels * 20));
+        apple_translate_channel_labels(channels, nchannels);
+        for (i = 0; i < nchannels; ++i)
+            if (channels[i] > kAudioChannelLabel_TopBackLeft)
+                goto FAIL;
+        break;
+    default:
+        ENSURE((mChannelLayoutTag & 0xffff) == nchannels);
+        TRY_IO(pcm_skip(io, chunk_size - 12));
+
+        switch (mChannelLayoutTag) {
+        /* 1ch */
+        case kAudioChannelLayoutTag_Mono:
+            layout = "\x03"; break;
+        /* 1.1ch */
+        case kAudioChannelLayoutTag_AC3_1_0_1:
+            layout = "\x03\x04"; break;
+        /* 2ch */
+        case kAudioChannelLayoutTag_Stereo:
+        case kAudioChannelLayoutTag_MatrixStereo:
+        case kAudioChannelLayoutTag_Binaural:
+            layout = "\x01\x02"; break;
+        /* 2.1ch */
+        case kAudioChannelLayoutTag_DVD_4:
+            layout = "\x01\x02\x04"; break;
+        /* 3ch */
+        case kAudioChannelLayoutTag_MPEG_3_0_A:
+            layout = "\x01\x02\x03"; break;
+        case kAudioChannelLayoutTag_AC3_3_0:
+            layout = "\x01\x03\x02"; break;
+        case kAudioChannelLayoutTag_MPEG_3_0_B:
+            layout = "\x03\x01\x02"; break;
+        case kAudioChannelLayoutTag_ITU_2_1:
+            layout = "\x01\x02\x09"; break;
+        /* 3.1ch */
+        case kAudioChannelLayoutTag_DVD_10:
+            layout = "\x01\x02\x03\x04"; break;
+        case kAudioChannelLayoutTag_AC3_3_0_1:
+            layout = "\x01\x03\x02\x04"; break;
+        case kAudioChannelLayoutTag_DVD_5:
+            layout = "\x01\x02\x04\x09"; break;
+        case kAudioChannelLayoutTag_AC3_2_1_1:
+            layout = "\x01\x02\x09\x04"; break;
+        /* 4ch */
+        case kAudioChannelLayoutTag_Quadraphonic:
+        case kAudioChannelLayoutTag_ITU_2_2:
+            layout = "\x01\x02\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_MPEG_4_0_A:
+            layout = "\x01\x02\x03\x09"; break;
+        case kAudioChannelLayoutTag_MPEG_4_0_B:
+            layout = "\x03\x01\x02\x09"; break;
+        case kAudioChannelLayoutTag_AC3_3_1:
+            layout = "\x01\x03\x02\x09"; break;
+        /* 4.1ch */
+        case kAudioChannelLayoutTag_DVD_6:
+            layout = "\x01\x02\x04\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_DVD_18:
+            layout = "\x01\x02\x0A\x0B\x04"; break;
+        case kAudioChannelLayoutTag_DVD_11:
+            layout = "\x01\x02\x03\x04\x09"; break;
+        case kAudioChannelLayoutTag_AC3_3_1_1:
+            layout = "\x01\x03\x02\x09\x04"; break;
+        /* 5ch */
+        case kAudioChannelLayoutTag_MPEG_5_0_A:
+            layout = "\x01\x02\x03\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_Pentagonal:
+        case kAudioChannelLayoutTag_MPEG_5_0_B:
+            layout = "\x01\x02\x0A\x0B\x03"; break;
+        case kAudioChannelLayoutTag_MPEG_5_0_C:
+            layout = "\x01\x03\x02\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_MPEG_5_0_D:
+            layout = "\x03\x01\x02\x0A\x0B"; break;
+        /* 5.1ch */
+        case kAudioChannelLayoutTag_MPEG_5_1_A:
+            layout = "\x01\x02\x03\x04\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_MPEG_5_1_B:
+            layout = "\x01\x02\x0A\x0B\x03\x04"; break;
+        case kAudioChannelLayoutTag_MPEG_5_1_C:
+            layout = "\x01\x03\x02\x0A\x0B\x04"; break;
+        case kAudioChannelLayoutTag_MPEG_5_1_D:
+            layout = "\x03\x01\x02\x0A\x0B\x04"; break;
+        /* 6ch */
+        case kAudioChannelLayoutTag_Hexagonal:
+        case kAudioChannelLayoutTag_AudioUnit_6_0:
+            layout = "\x01\x02\x0A\x0B\x03\x09"; break;
+        case kAudioChannelLayoutTag_AAC_6_0:
+            layout = "\x03\x01\x02\x0A\x0B\x09"; break;
+        /* 6.1ch */
+        case kAudioChannelLayoutTag_MPEG_6_1_A:
+            layout = "\x01\x02\x03\x04\x0A\x0B\x09"; break;
+        case kAudioChannelLayoutTag_AAC_6_1:
+            layout = "\x03\x01\x02\x0A\x0B\x09\x04"; break;
+        /* 7ch */
+        case kAudioChannelLayoutTag_AudioUnit_7_0:
+            layout = "\x01\x02\x0A\x0B\x03\x05\x06"; break;
+        case kAudioChannelLayoutTag_AudioUnit_7_0_Front:
+            layout = "\x01\x02\x0A\x0B\x03\x07\x08"; break;
+        case kAudioChannelLayoutTag_AAC_7_0:
+            layout = "\x03\x01\x02\x0A\x0B\x05\x06"; break;
+        /* 7.1ch */
+        case kAudioChannelLayoutTag_MPEG_7_1_A:
+            layout = "\x01\x02\x03\x04\x0A\x0B\x07\x08"; break;
+        case kAudioChannelLayoutTag_MPEG_7_1_B:
+            layout = "\x03\x07\x08\x01\x02\x05\x06\x04"; break;
+        case kAudioChannelLayoutTag_MPEG_7_1_C:
+            layout = "\x01\x02\x03\x04\x0A\x0B\x05\x06"; break;
+        case kAudioChannelLayoutTag_Emagic_Default_7_1:
+            layout = "\x01\x02\x0A\x0B\x03\x04\x07\x08"; break;
+        /* 8ch */
+        case kAudioChannelLayoutTag_Octagonal:
+            layout = "\x01\x02\x05\x06\x03\x09\x0A\x0B"; break;
+        case kAudioChannelLayoutTag_AAC_Octagonal:
+            layout = "\x03\x01\x02\x0A\x0B\x05\x06\x09"; break;
+        default:
+            goto FAIL;
+        }
+        strcpy((char*)channels, layout);
+    }
+
+    for (i = 0; i < nchannels; ++i)
+        mask |= 1 << (channels[i] - 1);
+    fmt->channel_mask = mask;
+    ENSURE(bitcount(mask) == nchannels);
+
+    for (i = 0; i < nchannels; ++i) 
+        index[i] = channels + i;
+    qsort(index, nchannels, sizeof(char*), channel_compare);
+    for (i = 0; i < nchannels; ++i) 
+        mapping[i] = index[i] - channels;
+
+    return 0;
+FAIL:
+    return -1;
+}

src/pcm_sint16_converter.c

@@ -1,3 +1,7 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
 #if HAVE_CONFIG_H
 #  include "config.h"
 #endif
@@ -39,10 +43,10 @@ static int64_t get_position(pcm_reader_t *reader)
 
 static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
 {
+    unsigned i, count;
     pcm_sint16_converter_t *self = (pcm_sint16_converter_t *)reader;
     const pcm_sample_description_t *sfmt = pcm_get_format(self->src);
     unsigned bytes = nframes * sfmt->bytes_per_frame;
-
     if (self->capacity < bytes) {
         void *p = realloc(self->pivot, bytes);
         if (!p) return -1;
@@ -50,8 +54,25 @@ static int read_frames(pcm_reader_t *reader, void *buffer, unsigned nframes)
         self->capacity = bytes;
     }
     nframes = pcm_read_frames(self->src, self->pivot, nframes);
-    if (pcm_convert_to_native_sint16(sfmt, self->pivot, nframes, buffer) < 0)
+    count = nframes * sfmt->channels_per_frame;
-        return -1;
+    if (PCM_IS_FLOAT(sfmt)) {
+        float   *ip = self->pivot;
+        int16_t *op = buffer;
+        for (i = 0; i < count; ++i)
+            op[i] = pcm_clip(ip[i] * 32768.0, -32768.0, 32767.0);
+    } else {
+        int32_t *ip = self->pivot;
+        int16_t *op = buffer;
+        if (sfmt->bits_per_channel <= 16) {
+            for (i = 0; i < count; ++i)
+                op[i] = ip[i] >> 16;
+        } else {
+            for (i = 0; i < count; ++i) {
+                int n = ((ip[i] >> 15) + 1) >> 1;
+                op[i] = (n == 0x8000) ? 0x7fff : n;
+            }
+        }
+    }
     return nframes;
 }
 
@@ -79,12 +100,8 @@ pcm_reader_t *pcm_open_sint16_converter(pcm_reader_t *reader)
     self->vtbl = &my_vtable;
     memcpy(&self->format, pcm_get_format(reader), sizeof(self->format));
     fmt = &self->format;
-#if WORDS_BIGENDIAN
-    fmt->sample_type = PCM_TYPE_SINT_BE;
-#else
-    fmt->sample_type = PCM_TYPE_SINT;
-#endif
     fmt->bits_per_channel = 16;
+    fmt->sample_type = PCM_TYPE_SINT;
     fmt->bytes_per_frame = 2 * fmt->channels_per_frame;
     return (pcm_reader_t *)self;
 }

src/wav_reader.c

@@ -14,37 +14,19 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
-#include "wav_reader.h"
+#include "pcm_reader.h"
-#include "m4af_endian.h"
 
 #define RIFF_FOURCC(a,b,c,d) ((a)|((b)<<8)|((c)<<16)|((d)<<24))
 
-#define TRY_IO(expr) \
+typedef struct wav_reader_t {
-    do { \
-        if (expr) \
-            goto FAIL; \
-    } while (0)
-
-#define ASSERT_FORMAT(ctx, expr) \
-    do { \
-        if (!expr) { \
-            if (!ctx->last_error) \
-                ctx->last_error = WAV_INVALID_FORMAT; \
-            goto FAIL;\
-        } \
-    } while (0)
-
-struct wav_reader_t {
     pcm_reader_vtbl_t *vtbl;
     pcm_sample_description_t sample_format;
     int64_t length;
     int64_t position;
     int32_t data_offset;
     int ignore_length;
-    int last_error;
+    pcm_io_context_t io;
-    wav_io_context_t io;
+} wav_reader_t;
-    void *io_cookie;
-};
 
 static const uint8_t WAV_GUID_PCM[] = {
     1, 0, 0, 0, 0, 0, 0x10, 0, 0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71
@@ -74,144 +56,11 @@ static void wav_teardown(pcm_reader_t **reader)
     *reader = 0;
 }
 
-static
-int riff_read(wav_reader_t *reader, void *buffer, uint32_t size)
-{
-    int rc;
-    uint32_t count = 0;
-
-    if (reader->last_error)
-        return -1;
-    do {
-        rc = reader->io.read(reader->io_cookie, buffer, size - count);
-        if (rc > 0)
-            count += rc;
-        else if (rc < 0)
-            reader->last_error = WAV_IO_ERROR;
-    } while (rc > 0 && count < size);
-    return count > 0 ? count : rc;
-}
-
-static
-int riff_skip(wav_reader_t *reader, int64_t count)
-{
-    char buff[8192];
-    int rc;
-
-    if (reader->last_error)
-        return -1;
-    if (count == 0)
-        return 0;
-    if (reader->io.seek &&
-        reader->io.seek(reader->io_cookie, count, SEEK_CUR) >= 0)
-        return 0;
-
-    do {
-        if ((rc = riff_read(reader, buff, count > 8192 ? 8192 : count)) > 0)
-            count -= rc;
-    } while (rc > 0 && count > 0);
-
-    if (count > 0)
-        reader->last_error = WAV_IO_ERROR;
-    return reader->last_error ? -1 : 0;
-}
-
-static
-int riff_seek(wav_reader_t *reader, int64_t off, int whence)
-{
-    int rc;
-    if (reader->last_error)
-        return -1;
-    if (!reader->io.seek)
-        goto FAIL;
-    if ((rc = reader->io.seek(reader->io_cookie, off, whence)) < 0)
-        goto FAIL;
-    return 0;
-FAIL:
-    reader->last_error = WAV_IO_ERROR;
-    return -1;
-}
-
-static
-int64_t riff_tell(wav_reader_t *reader)
-{
-    int64_t off;
-
-    if (reader->last_error || !reader->io.tell)
-        return -1;
-    off = reader->io.tell(reader->io_cookie);
-    if (off < 0) {
-        reader->last_error = WAV_IO_ERROR;
-        return -1;
-    }
-    return off;
-}
-
-static
-int riff_read16(wav_reader_t *reader, uint16_t *value)
-{
-    TRY_IO(riff_read(reader, value, 2) != 2);
-    *value = m4af_ltoh16(*value);
-    return 0;
-FAIL:
-    return -1;
-}
-
-static
-int riff_read32(wav_reader_t *reader, uint32_t *value)
-{
-    TRY_IO(riff_read(reader, value, 4) != 4);
-    *value = m4af_ltoh32(*value);
-    return 0;
-FAIL:
-    return -1;
-}
-
-static
-int riff_read64(wav_reader_t *reader, uint64_t *value)
-{
-    TRY_IO(riff_read(reader, value, 8) != 8);
-    *value = m4af_ltoh64(*value);
-    return 0;
-FAIL:
-    return -1;
-}
-
-static
-int riff_scan(wav_reader_t *reader, const char *fmt, ...)
-{
-    int c, count = 0;
-    va_list ap;
-
-    va_start(ap, fmt);
-    while ((c = *fmt++)) {
-        switch (c) {
-        case 'S':
-            TRY_IO(riff_read16(reader, va_arg(ap, uint16_t*)));
-            ++count;
-            break;
-        case 'L':
-            TRY_IO(riff_read32(reader, va_arg(ap, uint32_t*)));
-            ++count;
-            break;
-        case 'Q':
-            TRY_IO(riff_read64(reader, va_arg(ap, uint64_t*)));
-            ++count;
-            break;
-        }
-    }
-FAIL:
-    va_end(ap);
-    return count;
-}
-
 static
 uint32_t riff_next_chunk(wav_reader_t *reader, uint32_t *chunk_size)
 {
     uint32_t fcc;
-    if (riff_scan(reader, "LL", &fcc, chunk_size) == 2)
+    return (pcm_scanl(&reader->io, "LL", &fcc, chunk_size) == 2) ? fcc : 0;
-        return fcc;
-    return 0;
 }
 
 static
@@ -225,7 +74,7 @@ int wav_read_frames(pcm_reader_t *preader, void *buffer, unsigned nframes)
         nframes = reader->length - reader->position;
     nbytes = nframes * reader->sample_format.bytes_per_frame;
     if (nbytes) {
-        if ((rc = riff_read(reader, buffer, nbytes)) < 0)
+        if ((rc = pcm_read(&reader->io, buffer, nbytes)) < 0)
             return -1;
         nframes = rc / reader->sample_format.bytes_per_frame;
         reader->position += nframes;
@@ -240,12 +89,10 @@ int riff_ds64(wav_reader_t *reader, int64_t *length)
     uint64_t riff_size, sample_count;
 
     fcc = riff_next_chunk(reader, &chunk_size);
-    ASSERT_FORMAT(reader,
+    ENSURE(fcc == RIFF_FOURCC('d','s','6','4') && chunk_size >= 28);
-                  fcc == RIFF_FOURCC('d','s','6','4') && chunk_size >= 28);
+    TRY_IO(pcm_scanl(&reader->io, "QQQL",
-    TRY_IO(riff_scan(reader, "QQQL",
                      &riff_size, length, &sample_count, &table_size) != 4);
-    TRY_IO(riff_skip(reader, (chunk_size - 27) & ~1));
+    TRY_IO(pcm_skip(&reader->io, (chunk_size - 27) & ~1));
-    reader->data_offset += (chunk_size + 9) & ~1;
 FAIL:
     return -1;
 }
@@ -259,41 +106,34 @@ int wav_fmt(wav_reader_t *reader, uint32_t size)
     uint8_t guid[16];
     int is_float = 0;
 
-    ASSERT_FORMAT(reader, size >= 16);
+    ENSURE(size >= 16);
-    TRY_IO(riff_scan(reader, "SSLLSS", &wFormatTag, &nChannels,
+    TRY_IO(pcm_scanl(&reader->io, "SSLLSS", &wFormatTag, &nChannels,
                      &nSamplesPerSec, &nAvgBytesPerSec, &nBlockAlign,
                      &wBitsPerSample) != 6);
     wValidBitsPerSample = wBitsPerSample;
 
-    if (wFormatTag != 1 && wFormatTag != 3 && wFormatTag != 0xfffe) {
+    ENSURE(wFormatTag == 1 || wFormatTag == 3 || wFormatTag == 0xfffe);
-        reader->last_error = WAV_UNSUPPORTED_FORMAT;
+    ENSURE(nChannels && nSamplesPerSec && nAvgBytesPerSec &&
-        goto FAIL;
+           nBlockAlign && wBitsPerSample && !(wBitsPerSample & 7) &&
-    }
+           nBlockAlign == nChannels * wBitsPerSample / 8);
-    ASSERT_FORMAT(reader,
+
-                  nChannels && nSamplesPerSec && nAvgBytesPerSec &&
-                  nBlockAlign && wBitsPerSample && !(wBitsPerSample & 7) &&
-                  nBlockAlign == nChannels * wBitsPerSample / 8);
     if (wFormatTag == 3)
         is_float = 1;
 
     if (wFormatTag != 0xfffe)
-        TRY_IO(riff_skip(reader, (size - 15) & ~1));
+        TRY_IO(pcm_skip(&reader->io, (size - 15) & ~1));
     else {
-        ASSERT_FORMAT(reader, size >= 40);
+        ENSURE(size >= 40);
-        TRY_IO(riff_scan(reader, "SSL",
+        TRY_IO(pcm_scanl(&reader->io, "SSL",
                          &cbSize, &wValidBitsPerSample, &dwChannelMask) != 3);
-        TRY_IO(riff_read(reader, guid, 16) != 16);
+        TRY_IO(pcm_read(&reader->io, guid, 16) != 16);
 
         if (memcmp(guid, WAV_GUID_FLOAT, 16) == 0)
             is_float = 1;
-        else if (memcmp(guid, WAV_GUID_PCM, 16) != 0) {
+        else if (memcmp(guid, WAV_GUID_PCM, 16) != 0)
-            reader->last_error = WAV_UNSUPPORTED_FORMAT;
             goto FAIL;
-        }
+        ENSURE(wValidBitsPerSample && wValidBitsPerSample <= wBitsPerSample);
-        ASSERT_FORMAT(reader,
+        TRY_IO(pcm_skip(&reader->io, (size - 39) & ~1));
-                      wValidBitsPerSample &&
-                      wValidBitsPerSample <= wBitsPerSample);
-        TRY_IO(riff_skip(reader, (size - 39) & ~1));
     }
     reader->sample_format.sample_rate = nSamplesPerSec;
     reader->sample_format.bits_per_channel = wValidBitsPerSample;
@@ -318,13 +158,10 @@ int wav_parse(wav_reader_t *reader, int64_t *data_length)
 
     *data_length = 0;
     container = riff_next_chunk(reader, &chunk_size);
-    if (container != RIFF_FOURCC('R','I','F','F') &&
+    ENSURE(container == RIFF_FOURCC('R','I','F','F') ||
-        container != RIFF_FOURCC('R','F','6','4'))
+           container == RIFF_FOURCC('R','F','6','4'));
-        goto FAIL;
+    TRY_IO(pcm_read32le(&reader->io, &fcc));
-    TRY_IO(riff_read32(reader, &fcc));
+    ENSURE(fcc == RIFF_FOURCC('W','A','V','E'));
-    if (fcc != RIFF_FOURCC('W','A','V','E'))
-        goto FAIL;
-    reader->data_offset = 12;
 
     if (container == RIFF_FOURCC('R','F','6','4'))
         riff_ds64(reader, data_length);
@@ -335,12 +172,11 @@ int wav_parse(wav_reader_t *reader, int64_t *data_length)
         } else if (fcc == RIFF_FOURCC('d','a','t','a')) {
             if (container == RIFF_FOURCC('R','I','F','F'))
                 *data_length = chunk_size;
-            reader->data_offset += 8;
+            reader->data_offset = pcm_tell(&reader->io);
             break;
         } else {
-            TRY_IO(riff_skip(reader, (chunk_size + 1) & ~1));
+            TRY_IO(pcm_skip(&reader->io, (chunk_size + 1) & ~1));
         }
-        reader->data_offset += (chunk_size + 9) & ~1;
     }
     if (fcc == RIFF_FOURCC('d','a','t','a'))
         return 0;
@@ -356,8 +192,7 @@ static pcm_reader_vtbl_t wav_vtable = {
     wav_teardown
 };
 
-pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
+pcm_reader_t *wav_open(pcm_io_context_t *io, int ignore_length)
-                       int ignore_length)
 {
     wav_reader_t *reader = 0;
     int64_t data_length;
@@ -365,8 +200,7 @@ pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
 
     if ((reader = calloc(1, sizeof(wav_reader_t))) == 0)
         return 0;
-    memcpy(&reader->io, io_ctx, sizeof(wav_io_context_t));
+    memcpy(&reader->io, io, sizeof(pcm_io_context_t));
-    reader->io_cookie = io_cookie;
     reader->ignore_length = ignore_length;
     if (wav_parse(reader, &data_length) < 0) {
         free(reader);
@@ -378,39 +212,34 @@ pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
     else
         reader->length = data_length / bpf;
 
-    if (reader->length == INT64_MAX && reader->io.seek && reader->io.tell) {
+    if (reader->length == INT64_MAX) {
-        if (reader->io.seek(reader->io_cookie, 0, SEEK_END) >= 0) {
+        if (pcm_seek(&reader->io, 0, SEEK_END) >= 0) {
-            int64_t size = reader->io.tell(reader->io_cookie);
+            int64_t size = pcm_tell(&reader->io);
             if (size > 0)
                 reader->length = (size - reader->data_offset) / bpf;
-            reader->io.seek(reader->io_cookie, reader->data_offset, SEEK_SET);
+            pcm_seek(&reader->io, reader->data_offset, SEEK_SET);
         }
     }
     reader->vtbl = &wav_vtable;
     return (pcm_reader_t *)reader;
 }
 
-pcm_reader_t *raw_open(wav_io_context_t *io_ctx, void *io_cookie,
+pcm_reader_t *raw_open(pcm_io_context_t *io,
                        const pcm_sample_description_t *desc)
 {
     wav_reader_t *reader = 0;
 
     if ((reader = calloc(1, sizeof(wav_reader_t))) == 0)
         return 0;
-    memcpy(&reader->io, io_ctx, sizeof(wav_io_context_t));
+    memcpy(&reader->io, io, sizeof(pcm_io_context_t));
     memcpy(&reader->sample_format, desc, sizeof(pcm_sample_description_t));
-    reader->io_cookie = io_cookie;
+    if (pcm_seek(&reader->io, 0, SEEK_END) >= 0) {
-    if (io_ctx->seek && io_ctx->tell) {
+        int64_t size = pcm_tell(&reader->io);
-        if (reader->io.seek(reader->io_cookie, 0, SEEK_END) >= 0) {
+        if (size > 0)
-            int64_t size = reader->io.tell(reader->io_cookie);
+            reader->length = size / reader->sample_format.bytes_per_frame;
-            if (size > 0)
+        pcm_seek(&reader->io, 0, SEEK_SET);
-                reader->length = size / desc->bytes_per_frame;
-            reader->io.seek(reader->io_cookie, reader->data_offset, SEEK_SET);
-        }
     } else
         reader->length = INT64_MAX;
     reader->vtbl = &wav_vtable;
     return (pcm_reader_t *)reader;
 }
-
-

src/wav_reader.h

@@ -1,35 +0,0 @@
-/* 
- * Copyright (C) 2013 nu774
- * For conditions of distribution and use, see copyright notice in COPYING
- */
-#ifndef WAV_READER_H
-#define WAV_READER_H
-
-#include "lpcm.h"
-#include "pcm_reader.h"
-
-enum wav_error_code {
-    WAV_IO_ERROR = 1,
-    WAV_NO_MEMORY,
-    WAV_INVALID_FORMAT,
-    WAV_UNSUPPORTED_FORMAT
-};
-
-typedef int (*wav_read_callback)(void *cookie, void *data, uint32_t size);
-typedef int (*wav_seek_callback)(void *cookie, int64_t off, int whence);
-typedef int64_t (*wav_tell_callback)(void *cookie);
-
-typedef struct wav_io_context_t {
-    wav_read_callback read;
-    wav_seek_callback seek;
-    wav_tell_callback tell;
-} wav_io_context_t;
-
-typedef struct wav_reader_t wav_reader_t;
-
-pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
-                       int ignore_length);
-pcm_reader_t *raw_open(wav_io_context_t *io_ctx, void *io_cookie,
-                       const pcm_sample_description_t *desc);
-
-#endif

version.h

@@ -1,4 +1,4 @@
 #ifndef VERSION_H
 #define VERSION_H
-const char *fdkaac_version = "0.3.2";
+const char *fdkaac_version = "0.6.2";
 #endif