bump version

fix: CAF chan chunk using channel bitmap was not correctly handled
update ChangeLog
2025-06-05 23:29:14 +02:00 · 2014-02-17 13:55:08 +09:00 · 2014-02-17 13:51:20 +09:00 · 2014-01-18 17:47:03 +09:00 · 2014-01-18 17:44:51 +09:00 · 2014-01-18 17:41:57 +09:00
36 changed files with 5048 additions and 897 deletions
--- a/.gitignore
+++ b/.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
--- a/340
+++ b/340
@ -0,0 +1,340 @@
+2014-01-18  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog [HEAD]
+
+  * 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 [origin/master]
+
+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() [old]
+
+  * 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 [v0.3.2]
+
+2013-10-20  nu774 <honeycomb77@gmail.com>
+
+  * reimplement int16 conversion as pcm_reader
+
+  * add abstraction layer for pcm reading
+
+  * improve handling of avgBitrate
+
+2013-10-19  nu774 <honeycomb77@gmail.com>
+
+  * update ChangeLog and git2changelog.py
+
+2013-10-18  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.3.1]
+
+  * update README
+
+  * set avgBitrate field to zero for 14496-1 compliance
+
+2013-09-07  nu774 <honeycomb77@gmail.com>
+
+  * updated ChangeLog with new git2changelog.py
+
+2013-06-14  nu774 <honeycomb77@gmail.com>
+
+  * add --moov-before-mdat [v0.3.0]
+
+2013-03-04  nu774 <honeycomb77@gmail.com>
+
+  * fix an error message
+
+2013-03-03  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.2.0]
+
+  * add --gapless-mode
+
+2013-02-20  nu774 <honeycomb77@gmail.com>
+
+  * simplify __timeb64 condition
+
+  * use fseeko64() on i686-pc-mingw32
+
+2013-02-18  nu774 <honeycomb77@gmail.com>
+
+  * fix build issue on i686-pc-mingw (struct __timeb64 is missing)
+
+2013-02-17  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.9]
+
+  * fix to accept option -C
+
+2013-02-16  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.8]
+
+  * refine json metadata importing
+
+  * m4af: duplication check on adding tags
+
+2013-02-15  nu774 <honeycomb77@gmail.com>
+
+  * add --tag-from-json [v0.1.7]
+
+  * fix implicit int variable decl.
+
+  * update m4af
+
+2013-02-03  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.6]
+
+  * win32: change _wfopen() -> wfsopen()
+
+2013-01-30  nu774 <honeycomb77@gmail.com>
+
+  * update README (add note for character encoding)
+
+2013-01-28  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.5]
+
+  * gracefully shutdown on signals
+
+2013-01-27  nu774 <honeycomb77@gmail.com>
+
+  * fix MSVC project build issue
+
+2013-01-25  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.4]
+
+  * add --tag-from-file
+
+2013-01-24  nu774 <honeycomb77@gmail.com>
+
+  * add --silent
+
+2013-01-19  nu774 <honeycomb77@gmail.com>
+
+  * retab
+
+  * bump version [v0.1.3]
+
+  * fix crash on wrong long option, rename --ignore-length to --ignorelength
+
+2013-01-17  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.2]
+
+  * compat_win32: free argv with atexit()
+
+  * take care of COPYRIGHT-SIGN in UTF-8
+
+2013-01-15  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.1.1]
+
+  * fix return type of put_type_entry() to void
+
+  * add ADTS header size(7) to output byte length
+
+2013-01-13  nu774 <honeycomb77@gmail.com>
+
+  * fix mp4 duration & version calcuration [v0.1.0]
+
+2013-01-11  nu774 <honeycomb77@gmail.com>
+
+  * add support for xid
+
+  * support for i686-pc-mingw32 (missing _vscprintf)
+
+2013-01-10  nu774 <honeycomb77@gmail.com>
+
+  * bump version [v0.0.9]
+
+  * rename basename() -> aacenc_basename() and move to compat layer
+
+2013-01-09  nu774 <honeycomb77@gmail.com>
+
+  * add --tag and --long-tag
+
+  * fix corner case of progress display
+
+  * calculate length from file size
+
+  * raw input support
+
+2013-01-08  nu774 <honeycomb77@gmail.com>
+
+  * insert a white space in progress message
+
+2013-01-07  nu774 <honeycomb77@gmail.com>
+
+  * fix typo of bitrate-mode option [v0.0.8]
+
+  * more static inlining (missed on the previous commit) [v0.0.7]
+
+  * check error of fread() and fwrite() [v0.0.6]
+
+  * change inline->static inline to follow C99 semantics (for Clang)
+
+  * explicitly add -lfdk-aac to LDADD in Makefile.am
+
+  * add some files to EXTRA_DIST in Makefile.am
+
+  * fixed a typo in usage message [v0.0.5]
+
+2013-01-06  nu774 <honeycomb77@gmail.com>
+
+  * add MSVC projects
+
+  * add .gitattributes
+
+  * more tweak on configure.ac and Makefile.am (take care of getopt_long) [v0.0.4]
+
+  * use fstat() to test seekability of input file
+
+  * retrieve bitrate for tool tag with aacEncoder_GetParam()
+
+  * output to current working directory by default
+
+2013-01-05  nu774 <honeycomb77@gmail.com>
+
+  * zero clear LIB_INFO before calling aacEncGetLibInfo() [v0.0.3]
+
+  * tweak configure.ac and Makefile.am
+
+  * update version.h [v0.0.2]
+
+  * fixed to clip before converting float to int
+
+  * initial commit [v0.0.1]
+
--- a/MSVC/fdkaac.vcxproj
+++ b/MSVC/fdkaac.vcxproj
@ -52,13 +52,20 @@
      <WarningLevel>Level3</WarningLevel>
      <Optimization>Disabled</Optimization>
      <PreprocessorDefinitions>HAVE_STDINT_H;inline=__inline;_CRT_SECURE_NO_WARNINGS;WIN32;_CONSOLE;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>../fdk-aac/libSYS/include;../fdk-aac/libAACenc/include;../missings;.;..</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>./include;../missings;.;..</AdditionalIncludeDirectories>
      <StringPooling>true</StringPooling>
    </ClCompile>
    <Link>
      <SubSystem>Console</SubSystem>
      <GenerateDebugInformation>true</GenerateDebugInformation>
    </Link>
+    <PreBuildEvent>
+      <Command>copy ..\fdk-aac\libAACdec\include\aacdecoder_lib.h include\fdk-aac\ 
+copy ..\fdk-aac\libAACenc\include\aacenc_lib.h include\fdk-aac\ 
+copy ..\fdk-aac\libSYS\include\FDK_Audio.h include\fdk-aac\
+copy ..\fdk-aac\libSYS\include\genericStds.h include\fdk-aac\ 
+copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\ </Command>
+    </PreBuildEvent>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
    <ClCompile>
@ -69,7 +76,7 @@
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <IntrinsicFunctions>true</IntrinsicFunctions>
      <PreprocessorDefinitions>HAVE_STDINT_H;inline=__inline;_CRT_SECURE_NO_WARNINGS;WIN32;_CONSOLE;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>../fdk-aac/libSYS/include;../fdk-aac/libAACenc/include;../missings;.;..</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>./include;../missings;.;..</AdditionalIncludeDirectories>
      <StringPooling>true</StringPooling>
    </ClCompile>
    <Link>
@ -78,24 +85,44 @@
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
    </Link>
+    <PreBuildEvent>
+      <Command>copy ..\fdk-aac\libAACdec\include\aacdecoder_lib.h include\fdk-aac\ 
+copy ..\fdk-aac\libAACenc\include\aacenc_lib.h include\fdk-aac\ 
+copy ..\fdk-aac\libSYS\include\FDK_Audio.h include\fdk-aac\
+copy ..\fdk-aac\libSYS\include\genericStds.h include\fdk-aac\ 
+copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\ </Command>
+    </PreBuildEvent>
  </ItemDefinitionGroup>
  <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\extrapolater.c" />
+    <ClCompile Include="..\src\lpc.c" />
    <ClCompile Include="..\src\lpcm.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_readhelper.c" />
+    <ClCompile Include="..\src\pcm_sint16_converter.c" />
    <ClCompile Include="..\src\progress.c" />
    <ClCompile Include="..\src\wav_reader.c" />
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\missings\getopt.h" />
    <ClInclude Include="..\src\aacenc.h" />
+    <ClInclude Include="..\src\caf_reader.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>
--- a/MSVC/fdkaac.vcxproj.filters
+++ b/MSVC/fdkaac.vcxproj.filters
@ -18,9 +18,18 @@
    <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\extrapolater.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\lpc.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
    <ClCompile Include="..\src\lpcm.c">
      <Filter>Source Files</Filter>
    </ClCompile>
@ -30,6 +39,12 @@
    <ClCompile Include="..\src\main.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 +59,18 @@
    <ClInclude Include="..\src\aacenc.h">
      <Filter>Header Files</Filter>
    </ClInclude>
+    <ClInclude Include="..\src\caf_reader.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>
@ -56,6 +80,9 @@
    <ClInclude Include="..\src\m4af_endian.h">
      <Filter>Header Files</Filter>
    </ClInclude>
+    <ClInclude Include="..\src\pcm_reader.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
    <ClInclude Include="..\src\progress.h">
      <Filter>Header Files</Filter>
    </ClInclude>
--- a/MSVC/include/fdk-aac/.gitkeep
+++ b/MSVC/include/fdk-aac/.gitkeep
--- a/Makefile.am
+++ b/Makefile.am
@ -4,13 +4,22 @@ AUTOMAKE_OPTIONS = subdir-objects
 bin_PROGRAMS = fdkaac

 fdkaac_SOURCES = \
-    src/aacenc.c     \
-    src/lpcm.c       \
-    src/m4af.c       \
-    src/main.c       \
-    src/progress.c   \
+    src/aacenc.c               \
+    src/caf_reader.c           \
+    src/extrapolater.c         \
+    src/lpc.c                  \
+    src/lpcm.c                 \
+    src/m4af.c                 \
+    src/main.c                 \
+    src/metadata.c             \
+    src/parson.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

--- a/355
+++ b/355
@ -1,33 +1,332 @@
-==========================================================================
-fdkaac - command line frontend encoder for libfdk-aac
-==========================================================================
+% FDKAAC(1)
+% nu774 <honeycomb77@gmail.com>
+% November, 2013

-Prerequisites
-------------
-You need libfdk-aac.
-On Posix environment, you will also need GNU gettext (for iconv.m4) and
-GNU autoconf/automake.
+NAME
+====

-How to build on Posix environment
---------------------------------
-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)
+fdkaac - command line frontend for libfdk-aac encoder

-$ autoreconf -i
-$ ./configure && make && make install
+SYNOPSIS
+========

-How to build on MSVC
--------------------
-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
+**fdkaac** [OPTIONS] [FILE]
+
+DESCRIPTION
+===========
+
+**fdkaac** reads linear PCM audio in either WAV, raw PCM, or CAF format,
+and encodes it into either M4A / AAC file.
+
+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**.
+
+When CAF input and M4A output is used, tags in CAF file are copied into
+the resulting M4A.
+
+OPTIONS
+=======
+
+-h, --help
+:   Show command help
+
+-o \<FILE\>
+:   Output filename.
+
+-p, --profile \<n\>
+:   Target profile (MPEG4 audio object type, AOT)
+
+    2
+    :   MPEG-4 AAC LC (default)
+
+    5
+    :   MPEG-4 HE-AAC (SBR)
+
+    29
+    :   MPEG-4 HE-AAC v2 (SBR+PS)
+
+    23
+    :   MPEG-4 AAC LD
+
+    39
+    :   MPEG-4 AAC ELD
+
+    129
+    :   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

-MSVC solution for Visual Studio 2010 is under MSVC directory.
--- a/configure.ac
+++ b/configure.ac
@ -31,8 +31,9 @@ AC_TYPE_UINT8_T
 AC_CHECK_TYPES([ptrdiff_t])

 AC_SYS_LARGEFILE
+AC_CHECK_TYPES([struct __timeb64],[],[],[[#include <sys/timeb.h>]])
 AC_FUNC_FSEEKO
-AC_CHECK_FUNCS([gettimeofday nl_langinfo strdup _vscprintf])
+AC_CHECK_FUNCS([sigaction gettimeofday nl_langinfo _vscprintf fseeko64])
 AC_CHECK_FUNC(getopt_long)
 AM_CONDITIONAL([FDK_NO_GETOPT_LONG],[test "$ac_cv_func_getopt_long" != "yes"])
 AC_SEARCH_LIBS([aacEncOpen],[fdk-aac],[],[],[])
--- a/genman.sh
+++ b/genman.sh
@ -0,0 +1,2 @@
+#!/bin/sh
+pandoc -s -f markdown -t man README >fdkaac.1 && mv -f fdkaac.1 man/fdkaac.1
--- a/git2changelog.py
+++ b/git2changelog.py
@ -0,0 +1,44 @@
+#!/usr/bin/env python
+
+# Copyright (C) 2013 nu774
+# For conditions of distribution and use, see copyright notice in COPYING
+
+import sys
+import re
+from subprocess import Popen, PIPE
+from itertools import groupby
+from collections import namedtuple
+
+GITLOG_FMT = 'commit %H%nauthor %cn <%ae>%ndate %ad%nsubject %s%nref %d%n%n'
+GITLOG_CMD = ['git','log','--date=short','--format={0}'.format(GITLOG_FMT)]
+
+Commit = namedtuple('Commit', 'commit author date subject ref')
+
+def parse_gitlog(stream):
+    re_decode_ref = re.compile(r'(?<=\()([^,)]+)')
+    re_strip_tag = re.compile(r'^tag: ')
+    commit = dict()
+    for line in stream:
+        fields = line.decode('utf-8').rstrip('\r\n').split(' ', 1)
+        if len(fields) == 2:
+            key, value = fields
+            if key == 'ref':
+                m = re_decode_ref.search(value)
+                if m:
+                    value = ' [{0}]'.format(re_strip_tag.sub('', m.group()))
+                else:
+                    value = ''
+            commit[key] = value
+        elif commit:
+            yield Commit(**commit) 
+            commit = dict()
+
+output=sys.stdout.write
+
+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(u'{0}  {1}\n\n'.format(date, author).encode('utf-8'))
+        for c in commits:
+            output(u'  * {0}{1}\n\n'.format(c.subject, c.ref).encode('utf-8'))
--- a/man/fdkaac.1
+++ b/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>.
--- a/src/aacenc.c
+++ b/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, 1);
+    aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, params->lowdelay_sbr);
+
+#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) {
@ -97,7 +151,7 @@ int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
    }
    if (aacEncoder_SetParam(*encoder, AACENC_SIGNALING_MODE,
                            params->sbr_signaling) != AACENC_OK) {
-        fprintf(stderr, "ERROR: unsupported transport format\n");
+        fprintf(stderr, "ERROR: failed to set SBR signaling mode\n");
        goto FAIL;
    }
    if (params->adts_crc_check)
@ -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;
-    if (!*output || *osize < obytes) {
-        *osize = obytes;
-        *output = realloc(*output, obytes);
+    obytes = 6144 / 8 * channel_mode;
+    if (!output->data || output->capacity < obytes) {
+        uint8_t *p = realloc(output->data, 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;
-    return oargs.numInSamples;
+    output->size = oargs.numOutBytes;
+    return oargs.numInSamples / format->channels_per_frame;
 }
--- a/src/aacenc.h
+++ b/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
--- a/src/caf_reader.c
+++ b/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 "caf_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;
+}
--- a/src/caf_reader.h
+++ b/src/caf_reader.h
@ -0,0 +1,15 @@
+/* 
+ * Copyright (C) 2013 nu774
+ * For conditions of distribution and use, see copyright notice in COPYING
+ */
+#ifndef CAF_READER_H
+#define CAF_READER_H
+
+#include "lpcm.h"
+#include "pcm_reader.h"
+#include "metadata.h"
+
+pcm_reader_t *caf_open(pcm_io_context_t *io,
+                       aacenc_tag_callback_t tag_callback, void *tag_ctx);
+
+#endif
--- a/src/catypes.h
+++ b/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
--- a/src/compat.h
+++ b/src/compat.h
@ -6,7 +6,10 @@
 #define COMPAT_H

 #ifndef HAVE_FSEEKO
-#  if _MSC_VER >= 1400
+#  if HAVE_FSEEKO64
+#    define fseeko fseeko64
+#    define ftello ftello64
+#  elif _MSC_VER >= 1400
 #    define fseeko _fseeki64
 #    define ftello _ftelli64
 #  else
--- a/src/compat_win32.c
+++ b/src/compat_win32.c
@ -15,6 +15,7 @@
 #include <assert.h>
 #include <io.h>
 #include <fcntl.h>
+#include <share.h>
 #include <sys/timeb.h>
 #include "compat.h"
 #define WIN32_LEAN_AND_MEAN
@ -30,8 +31,13 @@ int __wgetmainargs(int *, wchar_t ***, wchar_t ***, int, _startupinfo *);

 int64_t aacenc_timer(void)
 {
+#if HAVE_STRUCT___TIMEB64
    struct __timeb64 tv;
    _ftime64(&tv);
+#else
+    struct timeb tv;
+    ftime(&tv);
+#endif
    return (int64_t)tv.time * 1000 + tv.millitm;
 }

@ -66,15 +72,29 @@ FILE *aacenc_fopen(const char *name, const char *mode)
        fp = (mode[0] == 'r') ? stdin : stdout;
        _setmode(_fileno(fp), _O_BINARY);
    } else {
+        int share = _SH_DENYRW;
+        if (strchr(mode, 'r') && !strchr(mode, '+'))
+            share = _SH_DENYWR;
        codepage_decode_wchar(CP_UTF8, name, &wname);
        codepage_decode_wchar(CP_UTF8, mode, &wmode);
-        fp = _wfopen(wname, wmode);
+        fp = _wfsopen(wname, wmode, share);
        free(wname);
        free(wmode);
    }
    return fp;
 }

+static char **__aacenc_argv__;
+
+static
+void aacenc_free_mainargs(void)
+{
+    char **p = __aacenc_argv__;
+    for (; *p; ++p)
+        free(*p);
+    free(__aacenc_argv__);
+}
+
 void aacenc_getmainargs(int *argc, char ***argv)
 {
    int i;
@ -86,6 +106,8 @@ void aacenc_getmainargs(int *argc, char ***argv)
    for (i = 0; i < *argc; ++i)
        codepage_encode_wchar(CP_UTF8, wargv[i], &(*argv)[i]);
    (*argv)[*argc] = 0;
+    __aacenc_argv__ = *argv;
+    atexit(aacenc_free_mainargs);
 }

 char *aacenc_to_utf8(const char *s)
--- a/src/extrapolater.c
+++ b/src/extrapolater.c
@ -0,0 +1,208 @@
+/* 
+ * 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);
+        bp->count = rc > 0 ? rc : 0;
+    }
+    if (rc > 0)
+        self->nbuffer ^= 1;
+    return 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);
+    }
+    self->process = bp->count ? process1 : 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))
+        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];
+    buffer_t *bbp = &self->buffer[self->nbuffer ^ 1];
+
+    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)
+        {
+            memcpy(bbp->data + bbp->count * sfmt->channels_per_frame,
+                   bp->data, bp->count * sfmt->bytes_per_frame);
+            bbp->count = total;
+            bp->count = 0;
+            bp = bbp;
+            self->nbuffer ^= 1;
+        }
+    }
+    self->process = process3;
+
+    if (bp->count >= 2 * LPC_ORDER)
+        extrapolate(self, bp, buffer, nframes);
+    else
+        memset(buffer, 0, nframes * sfmt->bytes_per_frame);
+    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;
+}
--- a/src/lpc.c
+++ b/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);
+}
--- a/src/lpc.h
+++ b/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
--- a/src/lpcm.c
+++ b/src/lpcm.c
@ -13,36 +13,6 @@
 #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)
 {
@ -187,14 +157,14 @@ inline int16_t pcm_f64be_to_s16(int64_t n)

 int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
                                 const void *input, uint32_t nframes,
-                                 int16_t **result, uint32_t *osize)
+                                 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]); \
+            result[i] = conv(ip[i]); \
        } \
    } while(0)

@ -204,7 +174,7 @@ int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
        uint8_t *ip = (uint8_t *)input; \
        bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \
        for (i = 0; i < count; ++i) { \
-            (*result)[i] = conv(ip); \
+            result[i] = conv(ip); \
            ip += bytes_per_channel; \
        } \
    } while(0)
@ -212,11 +182,6 @@ int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
    uint32_t count = nframes * format->channels_per_frame;
    if (!count)
        return 0;
-    if (!*result || *osize < count) {
-        *osize  = count;
-        *result = realloc(*result, count * sizeof(int16_t));
-    }
-
    switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) {
    case 1 | PCM_TYPE_SINT<<4:
        CONVERT(int8_t, pcm_s8_to_s16); break;
--- a/src/lpcm.h
+++ b/src/lpcm.h
@ -31,7 +31,37 @@ typedef struct pcm_sample_description_t {
 #define PCM_BYTES_PER_CHANNEL(desc) \
    ((desc)->bytes_per_frame / (desc)->channels_per_frame)

+#if defined(_MSC_VER) && _MSC_VER < 1800
+#  ifdef _M_IX86
+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;
+}
+
 int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
                                 const void *input, uint32_t nframes,
-                                 int16_t **result, uint32_t *osize);
+                                 int16_t *result);
 #endif
--- a/src/m4af.c
+++ b/src/m4af.c
--- a/src/m4af.h
+++ b/src/m4af.h
@ -8,8 +8,10 @@
 #define M4AF_FOURCC(a,b,c,d) (((a)<<24)|((b)<<16)|((c)<<8)|(d))

 enum m4af_error_code {
-    M4AF_IO_ERROR = 1,
-    M4AF_NO_MEMORY,
+    M4AF_IO_ERROR      = -1,
+    M4AF_NO_MEMORY     = -2,
+    M4AF_FORMAT_ERROR  = -3,
+    M4AF_NOT_SUPPORTED = -4,
 };

 enum m4af_itmf_tag {
@ -50,67 +52,80 @@ enum m4af_codec_type {
    M4AF_CODEC_TEXT = M4AF_FOURCC('t','e','x','t'),
 };

+enum m4af_priming_mode {
+    M4AF_PRIMING_MODE_ITUNSMPB = 1,
+    M4AF_PRIMING_MODE_EDTS = 2,
+    M4AF_PRIMING_MODE_BOTH = 3
+};
+
+typedef int (*m4af_read_callback)(void *cookie, void *buffer, uint32_t size);
 typedef int (*m4af_write_callback)(void *cookie, const void *data,
                                   uint32_t size);
 typedef int (*m4af_seek_callback)(void *cookie, int64_t off, int whence);
 typedef int64_t (*m4af_tell_callback)(void *cookie);

 typedef struct m4af_io_callbacks_t {
+    m4af_read_callback read;
    m4af_write_callback write;
    m4af_seek_callback seek;
    m4af_tell_callback tell;
 } m4af_io_callbacks_t;

-typedef struct m4af_writer_t m4af_writer_t;
+typedef struct m4af_itmf_entry_t {
+    uint32_t fcc;
+    char *name;
+    uint32_t type_code;
+    char *data;
+    uint32_t data_size;
+} m4af_itmf_entry_t;

-m4af_writer_t *m4af_create(uint32_t codec, uint32_t timescale,
-                           m4af_io_callbacks_t *io, void *io_cookie);
+typedef struct m4af_ctx_t m4af_ctx_t;

-void m4af_teardown(m4af_writer_t **ctx);

-int m4af_begin_write(m4af_writer_t *ctx);
+m4af_ctx_t *m4af_create(uint32_t codec, uint32_t timescale,
+                        m4af_io_callbacks_t *io, void *io_cookie);

-int m4af_finalize(m4af_writer_t *ctx);
+int m4af_begin_write(m4af_ctx_t *ctx);

-/* can be called before m4af_write_sample() */
-void m4af_set_fixed_frame_duration(m4af_writer_t *ctx, int track_idx,
-                                   uint32_t length);
+int m4af_finalize(m4af_ctx_t *ctx, int optimize);

-/* can be called between mfa4_begin_write() and m4af_finalize() */
-int m4af_write_sample(m4af_writer_t *ctx, int track_idx, const void *data,
+void m4af_teardown(m4af_ctx_t **ctx);
+
+int m4af_write_sample(m4af_ctx_t *ctx, uint32_t track_idx, const void *data,
                      uint32_t size, uint32_t duration);

+int m4af_set_decoder_specific_info(m4af_ctx_t *ctx, uint32_t track_idx,
+                                   uint8_t *data, uint32_t size);

-/* the following can be called at anytime before m4af_finalize() */
+void m4af_set_vbr_mode(m4af_ctx_t *ctx, uint32_t track_idx, int is_vbr);

-int m4af_decoder_specific_info(m4af_writer_t *ctx, int track_idx,
-                               uint8_t *data, uint32_t size);
-
-void m4af_set_priming(m4af_writer_t *ctx, int track_idx,
+void m4af_set_priming(m4af_ctx_t *ctx, uint32_t track_idx,
                      uint32_t encoder_delay, uint32_t padding);

-int m4af_add_itmf_long_tag(m4af_writer_t *ctx, const char *name,
+void m4af_set_priming_mode(m4af_ctx_t *ctx, int mode);
+
+void m4af_set_fixed_frame_duration(m4af_ctx_t *ctx, uint32_t track_idx,
+                                   uint32_t length);
+
+int m4af_add_itmf_long_tag(m4af_ctx_t *ctx, const char *name,
                           const char *data);

-int m4af_add_itmf_short_tag(m4af_writer_t *ctx, uint32_t type,
-                            uint32_t type_code, const void *data,
-                            uint32_t data_size);
+int m4af_add_itmf_short_tag(m4af_ctx_t *ctx, uint32_t fcc, uint32_t type_code,
+                            const void *data, uint32_t data_size);

-int m4af_add_itmf_string_tag(m4af_writer_t *ctx, uint32_t type,
-                             const char *data);
+int m4af_add_itmf_string_tag(m4af_ctx_t *ctx, uint32_t fcc, const char *data);

-int m4af_add_itmf_int8_tag(m4af_writer_t *ctx, uint32_t type, int value);
+int m4af_add_itmf_int8_tag(m4af_ctx_t *ctx, uint32_t fcc, int value);

-int m4af_add_itmf_int16_tag(m4af_writer_t *ctx, uint32_t type, int value);
+int m4af_add_itmf_int16_tag(m4af_ctx_t *ctx, uint32_t fcc, int value);

-int m4af_add_itmf_int32_tag(m4af_writer_t *ctx, uint32_t type, uint32_t value);
+int m4af_add_itmf_int32_tag(m4af_ctx_t *ctx, uint32_t fcc, uint32_t value);

-int m4af_add_itmf_int64_tag(m4af_writer_t *ctx, uint32_t type, uint64_t value);
+int m4af_add_itmf_int64_tag(m4af_ctx_t *ctx, uint32_t fcc, uint64_t value);

-int m4af_add_itmf_track_tag(m4af_writer_t *ctx, int track, int total);
+int m4af_add_itmf_track_tag(m4af_ctx_t *ctx, int track, int total);

-int m4af_add_itmf_disk_tag(m4af_writer_t *ctx, int disk, int total);
-
-int m4af_add_itmf_genre_tag(m4af_writer_t *ctx, int genre);
+int m4af_add_itmf_disk_tag(m4af_ctx_t *ctx, int disk, int total);

+int m4af_add_itmf_genre_tag(m4af_ctx_t *ctx, int genre);
 #endif
--- a/src/main.c
+++ b/src/main.c
@ -24,18 +24,60 @@
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#if HAVE_SIGACTION
+#include <signal.h>
+#endif
 #ifdef _WIN32
 #include <io.h>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
 #endif
 #include "compat.h"
 #include "wav_reader.h"
+#include "caf_reader.h"
 #include "aacenc.h"
 #include "m4af.h"
 #include "progress.h"
 #include "version.h"
+#include "metadata.h"

 #define PROGNAME "fdkaac"

+static volatile int g_interrupted = 0;
+
+#if HAVE_SIGACTION
+static void signal_handler(int signum)
+{
+    g_interrupted = 1;
+}
+static void handle_signals(void)
+{
+    int i, sigs[] = { SIGINT, SIGHUP, SIGTERM };
+    for (i = 0; i < sizeof(sigs)/sizeof(sigs[0]); ++i) {
+        struct sigaction sa;
+        memset(&sa, 0, sizeof sa);
+        sa.sa_handler = signal_handler;
+        sa.sa_flags |= SA_RESTART;
+        sigaction(sigs[i], &sa, 0);
+    }
+}
+#elif defined(_WIN32)
+static BOOL WINAPI signal_handler(DWORD type)
+{
+    g_interrupted = 1;
+    return TRUE;
+}
+
+static void handle_signals(void)
+{
+    SetConsoleCtrlHandler(signal_handler, TRUE);
+}
+#else
+static void handle_signals(void)
+{
+}
+#endif
+
 static
 int read_callback(void *cookie, void *data, uint32_t size)
 {
@ -91,11 +133,14 @@ 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"
-" -s, --sbr-signaling <n>       SBR signaling mode\n"
-"                                 0: Implicit, backward compatible(default)\n"
-"                                 1: Explicit SBR and implicit PS\n"
-"                                 2: Explicit hierarchical signaling\n"
+" -L, --lowdelay-sbr <-1|0|1>   Configure SBR activity on AAC ELD\n"
+"                                -1: Use ELD SBR auto configurator\n"
+"                                 0: Disable SBR on ELD (default)\n"
+"                                 1: Enable SBR on ELD\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"
@ -108,7 +153,16 @@ PROGNAME " %s\n"
 "                               transport layer\n"
 "\n"
 " -o <filename>                 Output filename\n"
-" --ignore-length               Ignore length of WAV header\n"
+" -G, --gapless-mode <n>        Encoder delay signaling for gapless playback\n"
+"                                 0: iTunSMPB (default)\n"
+"                                 1: ISO standard (edts + sgpd)\n"
+"                                 2: Both\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"
 "Options for raw (headerless) input:\n"
 " -R, --raw                     Treat input as raw (by default WAV is\n"
@ -138,66 +192,61 @@ PROGNAME " %s\n"
 " --disk <number[/total]>\n"
 " --tempo <n>\n"
 " --tag <fcc>:<value>          Set iTunes predefined tag with four char code.\n"
+" --tag-from-file <fcc>:<filename>\n"
+"                              Same as above, but value is read from file.\n"
 " --long-tag <name>:<value>    Set arbitrary tag as iTunes custom metadata.\n"
+" --tag-from-json <filename[?dot_notation]>\n"
+"                              Read tags from JSON. By default, tags are\n"
+"                              assumed to be direct children of the root\n"
+"                              object(dictionary).\n"
+"                              Optionally, position of the dictionary\n"
+"                              that contains tags can be specified with\n"
+"                              dotted notation.\n"
+"                              Example:\n"
+"                                --tag-from-json /path/to/json?format.tags\n"
    , fdkaac_version);
 }

-typedef struct aacenc_tag_entry_t {
-    uint32_t tag;
-    const char *name;
-    const char *data;
-    uint32_t data_size;
-} aacenc_tag_entry_t;
-
 typedef struct aacenc_param_ex_t {
    AACENC_PARAMS

    char *input_filename;
+    FILE *input_fp;
    char *output_filename;
+    FILE *output_fp;
+    unsigned gapless_mode;
+    unsigned include_sbr_delay;
    unsigned ignore_length;
+    int silent;
+    int moov_before_mdat;

    int is_raw;
    unsigned raw_channels;
    unsigned raw_rate;
    const char *raw_format;

-    aacenc_tag_entry_t *tag_table;
-    unsigned tag_count;
-    unsigned tag_table_capacity;
-} aacenc_param_ex_t;
+    aacenc_tag_store_t tags;
+    aacenc_tag_store_t source_tags;
+    aacenc_translate_generic_text_tag_ctx_t source_tag_ctx;

-static
-void param_add_itmf_entry(aacenc_param_ex_t *params, uint32_t tag,
-                         const char *key, const char *value, uint32_t size)
-{
-    aacenc_tag_entry_t *entry;
-    if (params->tag_count == params->tag_table_capacity) {
-        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->data = value;
-    entry->data_size = size;
-    params->tag_count++;
-}
+    char *json_filename;
+} aacenc_param_ex_t;

 static
 int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 {
    int ch;
-    unsigned n;
+    int n;

-#define OPT_RAW_CHANNELS M4AF_FOURCC('r','c','h','n')
-#define OPT_RAW_RATE     M4AF_FOURCC('r','r','a','t')
-#define OPT_RAW_FORMAT   M4AF_FOURCC('r','f','m','t')
-#define OPT_SHORT_TAG    M4AF_FOURCC('s','t','a','g')
-#define OPT_LONG_TAG     M4AF_FOURCC('l','t','a','g')
+#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')
+#define OPT_RAW_FORMAT           M4AF_FOURCC('r','f','m','t')
+#define OPT_SHORT_TAG            M4AF_FOURCC('s','t','a','g')
+#define OPT_SHORT_TAG_FILE       M4AF_FOURCC('s','t','g','f')
+#define OPT_LONG_TAG             M4AF_FOURCC('l','t','a','g')
+#define OPT_TAG_FROM_JSON        M4AF_FOURCC('t','f','j','s')

    static struct option long_options[] = {
        { "help",             no_argument,       0, 'h' },
@ -206,13 +255,17 @@ 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' },
-        { "sbr-signaling",    required_argument, 0, 's' },
+        { "lowdelay-sbr",     required_argument, 0, 'L' },
+        { "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' },

-        { "ignore-length",    no_argument,       0, 'I' },
+        { "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   },

        { "raw",              no_argument,       0, 'R' },
        { "raw-channels",     required_argument, 0, OPT_RAW_CHANNELS       },
@ -232,12 +285,15 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
        { "disk",             required_argument, 0, M4AF_TAG_DISK          },
        { "tempo",            required_argument, 0, M4AF_TAG_TEMPO         },
        { "tag",              required_argument, 0, OPT_SHORT_TAG          },
+        { "tag-from-file",    required_argument, 0, OPT_SHORT_TAG_FILE     },
        { "long-tag",         required_argument, 0, OPT_LONG_TAG           },
+        { "tag-from-json",    required_argument, 0, OPT_TAG_FROM_JSON      },
+        { 0,                  0,                 0, 0                      },
    };
    params->afterburner = 1;

    aacenc_getmainargs(&argc, &argv);
-    while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:Io:R",
+    while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:G:Io:SR",
                             long_options, 0)) != EOF) {
        switch (ch) {
        case 'h':
@ -278,14 +334,18 @@ 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) {
@ -294,7 +354,7 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
            }
            params->transport_format = n;
            break;
-        case 'c':
+        case 'C':
            params->adts_crc_check = 1;
            break;
        case 'P':
@ -307,9 +367,25 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
        case 'o':
            params->output_filename = optarg;
            break;
+        case 'G':
+            if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
+                fprintf(stderr, "invalid arg for gapless-mode\n");
+                return -1;
+            }
+            params->gapless_mode = n;
+            break;
+        case OPT_INCLUDE_SBR_DELAY:
+            params->include_sbr_delay = 1;
+            break;
        case 'I':
            params->ignore_length = 1;
            break;
+        case 'S':
+            params->silent = 1;
+            break;
+        case OPT_MOOV_BEFORE_MDAT:
+            params->moov_before_mdat = 1;
+            break;
        case 'R':
            params->is_raw = 1;
            break;
@ -342,9 +418,11 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
        case M4AF_TAG_TRACK:
        case M4AF_TAG_DISK:
        case M4AF_TAG_TEMPO:
-            param_add_itmf_entry(params, ch, 0, optarg, strlen(optarg));
+            aacenc_add_tag_to_store(&params->tags, ch, 0, optarg,
+                                    strlen(optarg), 0);
            break;
        case OPT_SHORT_TAG:
+        case OPT_SHORT_TAG_FILE:
        case OPT_LONG_TAG:
            {
                char *val;
@ -356,7 +434,15 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
                    return -1;
                }
                *val++ = '\0';
-                if (ch == OPT_SHORT_TAG) {
+                if (ch == OPT_SHORT_TAG || ch == OPT_SHORT_TAG_FILE) {
+                    /*
+                     * take care of U+00A9(COPYRIGHT SIGN).
+                     * 1) if length of fcc is 3, we prepend '\xa9'.
+                     * 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
+                     *    we remove first '\xc2'.
+                     */
+                    if (optarg[0] == '\xc2')
+                        ++optarg;
                    if ((klen = strlen(optarg))== 3)
                        fcc = 0xa9;
                    else if (klen != 4) {
@ -366,9 +452,14 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
                    for (; *optarg; ++optarg)
                        fcc = ((fcc << 8) | (*optarg & 0xff));
                }
-                param_add_itmf_entry(params, fcc, optarg, val, strlen(val));
+                aacenc_add_tag_to_store(&params->tags, fcc, optarg,
+                                        val, strlen(val),
+                                        ch == OPT_SHORT_TAG_FILE);
            }
            break;
+        case OPT_TAG_FROM_JSON:
+            params->json_filename = optarg;
+            break;
        default:
            return usage(), -1;
        }
@ -401,16 +492,15 @@ int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 };

 static
-int write_sample(FILE *ofp, m4af_writer_t *m4af,
-                 const void *data, uint32_t size, uint32_t duration)
+int write_sample(FILE *ofp, m4af_ctx_t *m4af, aacenc_frame_t *frame)
 {
    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;
    }
@ -418,190 +508,90 @@ int write_sample(FILE *ofp, m4af_writer_t *m4af,
 }

 static
-int encode(wav_reader_t *wavf, HANDLE_AACENCODER encoder,
-           uint32_t frame_length, FILE *ofp, m4af_writer_t *m4af)
+int encode(aacenc_param_ex_t *params, pcm_reader_t *reader,
+           HANDLE_AACENCODER encoder, uint32_t frame_length, 
+           m4af_ctx_t *m4af)
 {
-    uint8_t *ibuf = 0;
-    int16_t *pcmbuf = 0;
-    uint32_t pcmsize = 0;
-    uint8_t *obuf = 0;
-    uint32_t olen;
-    uint32_t osize = 0;
+    int16_t *ibuf = 0, *ip;
+    aacenc_frame_t obuf[2] = {{ 0 }}, *obp;
+    unsigned flip = 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 *format = wav_get_format(wavf);
+    const pcm_sample_description_t *fmt = pcm_get_format(reader);

-    ibuf = malloc(frame_length * format->bytes_per_frame);
-    aacenc_progress_init(&progress, wav_get_length(wavf), format->sample_rate);
-    do {
-        if (nread) {
-            if ((nread = wav_read_frames(wavf, ibuf, frame_length)) < 0) {
+    ibuf = malloc(frame_length * fmt->bytes_per_frame);
+    aacenc_progress_init(&progress, pcm_get_length(reader), fmt->sample_rate);
+
+    for (;;) {
+        /*
+         * Since we delay the write, we cannot just exit loop when interrupted.
+         * Instead, we regard it as EOF.
+         */
+        if (g_interrupted)
+            nread = 0;
+        if (nread > 0) {
+            if ((nread = pcm_read_frames(reader, ibuf, frame_length)) < 0) {
                fprintf(stderr, "ERROR: read failed\n");
                goto END;
-            } else if (nread > 0) {
-                if (pcm_convert_to_native_sint16(format, ibuf, nread,
-                                                 &pcmbuf, &pcmsize) < 0) {
-                    fprintf(stderr, "ERROR: unsupported sample format\n");
-                    goto END;
-                }
            }
-            aacenc_progress_update(&progress, wav_get_position(wavf),
-                                   format->sample_rate * 2);
+            if (!params->silent)
+                aacenc_progress_update(&progress, pcm_get_position(reader),
+                                       fmt->sample_rate * 2);
        }
-        if ((consumed = aac_encode_frame(encoder, format, pcmbuf, nread,
-                                         &obuf, &olen, &osize)) < 0)
-            goto END;
-        if (olen > 0) {
-            if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
+        ip = ibuf;
+        remaining = nread;
+        do {
+            obp = &obuf[flip];
+            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;
+            obp = &obuf[flip];
+            if (write_sample(params->output_fp, m4af, obp) < 0)
                goto END;
            ++frames_written;
-        }
-    } while (nread > 0 || olen > 0);
-    aacenc_progress_finish(&progress, wav_get_position(wavf));
+        } while (remaining > 0);
+    }
+DONE:
+    if (!params->silent)
+        aacenc_progress_finish(&progress, pcm_get_position(reader));
    rc = frames_written;
 END:
    if (ibuf) free(ibuf);
-    if (pcmbuf) free(pcmbuf);
-    if (obuf) free(obuf);
+    if (obuf[0].data) free(obuf[0].data);
+    if (obuf[1].data) free(obuf[1].data);
    return rc;
 }

 static
-void put_tag_entry(m4af_writer_t *m4af, const aacenc_tag_entry_t *tag)
-{
-    unsigned m, n = 0;
-
-    switch (tag->tag) {
-    case M4AF_TAG_TRACK:
-        if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
-            m4af_add_itmf_track_tag(m4af, m, n);
-        break;
-    case M4AF_TAG_DISK:
-        if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
-            m4af_add_itmf_disk_tag(m4af, m, n);
-        break;
-    case M4AF_TAG_GENRE_ID3:
-        if (sscanf(tag->data, "%u", &n) == 1)
-            m4af_add_itmf_genre_tag(m4af, n);
-        break;
-    case M4AF_TAG_TEMPO:
-        if (sscanf(tag->data, "%u", &n) == 1)
-            m4af_add_itmf_int16_tag(m4af, tag->tag, n);
-        break;
-    case M4AF_TAG_COMPILATION:
-    case M4AF_FOURCC('a','k','I','D'):
-    case M4AF_FOURCC('h','d','v','d'):
-    case M4AF_FOURCC('p','c','s','t'):
-    case M4AF_FOURCC('p','g','a','p'):
-    case M4AF_FOURCC('r','t','n','g'):
-    case M4AF_FOURCC('s','t','i','k'):
-        if (sscanf(tag->data, "%u", &n) == 1)
-            m4af_add_itmf_int8_tag(m4af, tag->tag, n);
-        break;
-    case M4AF_FOURCC('a','t','I','D'):
-    case M4AF_FOURCC('c','m','I','D'):
-    case M4AF_FOURCC('c','n','I','D'):
-    case M4AF_FOURCC('g','e','I','D'):
-    case M4AF_FOURCC('s','f','I','D'):
-    case M4AF_FOURCC('t','v','s','n'):
-    case M4AF_FOURCC('t','v','s','s'):
-        if (sscanf(tag->data, "%u", &n) == 1)
-            m4af_add_itmf_int32_tag(m4af, tag->tag, n);
-        break;
-    case M4AF_FOURCC('p','l','I','D'):
-        {
-            int64_t qn;
-            if (sscanf(tag->data, "%" SCNd64, &qn) == 1)
-                m4af_add_itmf_int64_tag(m4af, tag->tag, qn);
-            break;
-        }
-    case M4AF_TAG_ARTWORK:
-        {
-            int data_type = 0;
-            if (!memcmp(tag->data, "GIF", 3))
-                data_type = M4AF_GIF;
-            else if (!memcmp(tag->data, "\xff\xd8\xff", 3))
-                data_type = M4AF_JPEG;
-            else if (!memcmp(tag->data, "\x89PNG", 4))
-                data_type = M4AF_PNG;
-            if (data_type)
-                m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
-                                        tag->data, tag->data_size);
-            break;
-        }
-    case M4AF_FOURCC('-','-','-','-'):
-        {
-            char *u8 = aacenc_to_utf8(tag->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(tag->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",
-                tag->tag >> 24, (tag->tag >> 16) & 0xff,
-                (tag->tag >> 8) & 0xff, tag->tag & 0xff);
-    }
-}
-
-static
-void put_tool_tag(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
+void put_tool_tag(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
                  HANDLE_AACENCODER encoder)
 {
    char tool_info[256];
    char *p = tool_info;
-    LIB_INFO *lib_info = 0;
+    LIB_INFO lib_info;

    p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
-
-    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)
-                break;
-        p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
-    }
-    free(lib_info);
+    aacenc_get_lib_info(&lib_info);
+    p += sprintf(p, "libfdk-aac %s, ", lib_info.versionStr);
    if (params->bitrate_mode)
        sprintf(p, "VBR mode %d", params->bitrate_mode);
    else
@ -612,17 +602,26 @@ void put_tool_tag(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 }

 static
-int finalize_m4a(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
+int finalize_m4a(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
                 HANDLE_AACENCODER encoder)
 {
    unsigned i;
-    aacenc_tag_entry_t *tag = params->tag_table;
-    for (i = 0; i < params->tag_count; ++i, ++tag)
-        put_tag_entry(m4af, tag);
+    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_write_tags_from_json(m4af, params->json_filename);
+
+    tag = params->tags.tag_table;
+    for (i = 0; i < params->tags.tag_count; ++i, ++tag)
+        aacenc_write_tag_entry(m4af, tag);

    put_tool_tag(m4af, params, encoder);

-    if (m4af_finalize(m4af) < 0) {
+    if (m4af_finalize(m4af, params->moov_before_mdat) < 0) {
        fprintf(stderr, "ERROR: failed to finalize m4a\n");
        return -1;
    }
@ -644,7 +643,7 @@ 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;
 }
@ -685,25 +684,95 @@ 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)
+{
+    pcm_io_context_t io = { 0 };
+    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;
+    }
+    io.cookie = params->input_fp;
+    if (fstat(fileno(params->input_fp), &stb) == 0
+            && (stb.st_mode & S_IFMT) == S_IFREG)
+        io.vtbl = &pcm_io_vtbl;
+    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;
+        }
+        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(&io, &desc)) == 0) {
+            fprintf(stderr, "ERROR: failed to open raw input\n");
+            goto END;
+        }
+    } else {
+        int c;
+        ungetc(c = getc(params->input_fp), params->input_fp);
+
+        switch (c) {
+        case 'R':
+            if ((reader = wav_open(&io, params->ignore_length)) == 0) {
+                fprintf(stderr, "ERROR: broken / unsupported input file\n");
+                goto END;
+            }
+            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 END;
+            }
+            break;
+        default:
+            fprintf(stderr, "ERROR: unsupported input file\n");
+            goto END;
+        }
+    }
+    if ((reader = pcm_open_sint16_converter(reader)) != 0)
+        reader = extrapolater_open(reader);
+    return reader;
+END:
+    return 0;
+}
+
 int main(int argc, char **argv)
 {
-    wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
-    m4af_io_callbacks_t m4af_io = {
-        write_callback, seek_callback, tell_callback };
+    static m4af_io_callbacks_t m4af_io = {
+        read_callback, write_callback, seek_callback, tell_callback
+    };
    aacenc_param_ex_t params = { 0 };

    int result = 2;
-    FILE *ifp = 0;
-    FILE *ofp = 0;
    char *output_filename = 0;
-    wav_reader_t *wavf = 0;
+    pcm_reader_t *reader = 0;
    HANDLE_AACENCODER encoder = 0;
    AACENC_InfoStruct aacinfo = { 0 };
-    m4af_writer_t *m4af = 0;
+    m4af_ctx_t *m4af = 0;
    const pcm_sample_description_t *sample_format;
-    int downsampled_timescale = 0;
    int frame_count = 0;
-    struct stat stb = { 0 };
+    int sbr_mode = 0;
+    unsigned scale_shift = 0;

    setlocale(LC_CTYPE, "");
    setbuf(stderr, 0);
@ -711,37 +780,23 @@ int main(int argc, char **argv)
    if (parse_options(argc, argv, &params) < 0)
        return 1;

-    if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
-        aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
-                       strerror(errno));
+    if ((reader = open_input(&params)) == 0)
        goto END;
+
+    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;
    }
-    if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
-        wav_io.seek = 0;
-        wav_io.tell = 0;
-    }
-    if (!params.is_raw) {
-        if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
-            fprintf(stderr, "ERROR: broken / unsupported input file\n");
-            goto END;
-        }
-    } else {
-        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;
-        }
-        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 ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
-            fprintf(stderr, "ERROR: failed to open raw input\n");
-            goto END;
-        }
-    }
-    sample_format = wav_get_format(wavf);
+    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)
@ -753,48 +808,68 @@ int main(int argc, char **argv)
        params.output_filename = output_filename;
    }

-    if ((ofp = aacenc_fopen(params.output_filename, "wb")) == 0) {
+    if ((params.output_fp = aacenc_fopen(params.output_filename, "wb+")) == 0) {
        aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
                       strerror(errno));
        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);
-	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, ofp)) < 0)
+        scale = sample_format->sample_rate >> scale_shift;
+        if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io,
+                                params.output_fp)) < 0)
            goto END;
-        m4af_decoder_specific_info(m4af, 0, aacinfo.confBuf, aacinfo.confSize);
+        m4af_set_decoder_specific_info(m4af, 0,
+                                       aacinfo.confBuf, aacinfo.confSize);
        m4af_set_fixed_frame_duration(m4af, 0,
-                                      framelen >> downsampled_timescale);
+                                      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(wavf, encoder, aacinfo.frameLength, ofp, m4af);
+    if (scale_shift && (aacinfo.encoderDelay & 1)) {
+        /*
+         * 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;
-	int64_t frames_read = wav_get_position(wavf);
-        uint32_t padding = frame_count * aacinfo.frameLength
-                            - frames_read - aacinfo.encoderDelay;
-        m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
-                         padding >> downsampled_timescale);
+        uint32_t padding;
+        int64_t frames_read = pcm_get_position(reader);
+
+        if (sbr_mode && params.profile != AOT_ER_AAC_ELD &&
+            !params.include_sbr_delay)
+            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;
    }
    result = 0;
 END:
-    if (wavf) wav_teardown(&wavf);
-    if (ifp) fclose(ifp);
+    if (reader) pcm_teardown(&reader);
+    if (params.input_fp) fclose(params.input_fp);
    if (m4af) m4af_teardown(&m4af);
-    if (ofp) fclose(ofp);
+    if (params.output_fp) fclose(params.output_fp);
    if (encoder) aacEncClose(&encoder);
    if (output_filename) free(output_filename);
-    if (params.tag_table) free(params.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;
 }
--- a/src/metadata.c
+++ b/src/metadata.c
@ -0,0 +1,442 @@
+/* 
+ * 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
+#if HAVE_INTTYPES_H
+#  include <inttypes.h>
+#elif defined(_MSC_VER)
+#  define SCNd64 "I64d"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include "m4af.h"
+#include "metadata.h"
+#include "compat.h"
+#include "parson.h"
+
+typedef struct tag_key_mapping_t {
+    const char *name;
+    uint32_t fcc;
+} tag_key_mapping_t;
+
+enum {
+    TAG_TOTAL_DISCS  = 1,
+    TAG_TOTAL_TRACKS = 2
+};
+
+static tag_key_mapping_t tag_mapping_table[] = {
+    { "album",                      M4AF_TAG_ALBUM               },
+    { "albumartist",                M4AF_TAG_ALBUM_ARTIST        },
+    { "albumartistsort",            M4AF_FOURCC('s','o','a','a') },
+    { "albumartistsortorder",       M4AF_FOURCC('s','o','a','a') },
+    { "albumsort",                  M4AF_FOURCC('s','o','a','l') },
+    { "albumsortorder",             M4AF_FOURCC('s','o','a','l') },
+    { "artist",                     M4AF_TAG_ARTIST              },
+    { "artistsort",                 M4AF_FOURCC('s','o','a','r') },
+    { "artistsortorder",            M4AF_FOURCC('s','o','a','r') },
+    { "band",                       M4AF_TAG_ALBUM_ARTIST        },
+    { "bpm",                        M4AF_TAG_TEMPO               },
+    { "comment",                    M4AF_TAG_COMMENT             },
+    { "compilation",                M4AF_TAG_COMPILATION         },
+    { "composer",                   M4AF_TAG_COMPOSER            },
+    { "composersort",               M4AF_FOURCC('s','o','c','o') },
+    { "composersortorder",          M4AF_FOURCC('s','o','c','o') },
+    { "contentgroup",               M4AF_TAG_GROUPING            },
+    { "copyright",                  M4AF_TAG_COPYRIGHT           },
+    { "date",                       M4AF_TAG_DATE                },
+    { "disc",                       M4AF_TAG_DISK                },
+    { "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') },
+    { "totaldiscs",                 TAG_TOTAL_DISCS              },
+    { "totaltracks",                TAG_TOTAL_TRACKS             },
+    { "track",                      M4AF_TAG_TRACK               },
+    { "tracknumber",                M4AF_TAG_TRACK               },
+    { "tracktotal",                 TAG_TOTAL_TRACKS             },
+    { "unsyncedlyrics",             M4AF_TAG_LYRICS              },
+    { "year",                       M4AF_TAG_DATE                },
+};
+
+static
+int tag_key_comparator(const void *k, const void *v)
+{
+    return strcmp((const char *)k, ((tag_key_mapping_t*)v)->name);
+}
+
+static
+uint32_t get_tag_fcc_from_name(const char *name)
+{
+    char *name_p = 0, *p;
+    const tag_key_mapping_t *ent;
+
+    name_p = malloc(strlen(name) + 1);
+    for (p = name_p; *name; ++name) {
+        unsigned char c = *name;
+        if (c != ' ' && c != '-' && c != '_')
+            *p++ = tolower(c);
+    }
+    *p = 0;
+    ent = bsearch(name_p, tag_mapping_table,
+                  sizeof(tag_mapping_table) / sizeof(tag_mapping_table[0]),
+                  sizeof(tag_mapping_table[0]),
+                  tag_key_comparator);
+    free(name_p);
+    return ent ? ent->fcc : 0;
+}
+
+static
+char *aacenc_load_tag_from_file(const char *path, uint32_t *data_size)
+{
+    FILE *fp = 0;
+    char *data = 0;
+    int64_t size;
+
+    if ((fp = aacenc_fopen(path, "rb")) == NULL) {
+        aacenc_fprintf(stderr, "WARNING: %s: %s\n", path, strerror(errno));
+        goto END;
+    }
+    fseeko(fp, 0, SEEK_END);
+    size = ftello(fp);
+    if (size > 5*1024*1024) {
+        aacenc_fprintf(stderr, "WARNING: %s: size too large\n", path);
+        goto END;
+    }
+    fseeko(fp, 0, SEEK_SET);
+    data = malloc(size + 1);
+    if (data) fread(data, 1, size, fp);
+    data[size] = 0;
+    *data_size = (uint32_t)size;
+END:
+    if (fp) fclose(fp);
+    return data;
+}
+
+static
+int aacenc_is_string_tag(uint32_t tag)
+{
+    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;
+    entry.tag = tag;
+    if (tag == M4AF_FOURCC('-','-','-','-'))
+        entry.name = (char *)key;
+
+    if (is_file_name) {
+        entry.data = dp = aacenc_load_tag_from_file(value, &size);
+        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(aacenc_translate_generic_text_tag_ctx_t *ctx,
+                         uint32_t fcc, unsigned number, unsigned total)
+{
+    char buf[128];
+    aacenc_tag_entry_t entry = { 0 };
+
+    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);
+        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);
+        }
+    }
+}
+
+static
+const char *aacenc_json_object_get_string(JSON_Object *obj, const char *key,
+                                          char *buf)
+{
+    JSON_Value_Type type;
+    const char *val = 0;
+
+    type = json_value_get_type(json_object_get_value(obj, key));
+    if (type == JSONString)
+        val = json_object_get_string(obj, key);
+    else if (type == JSONNumber) {
+        double num = json_object_get_number(obj, key);
+        sprintf(buf, "%.15g", num);
+        val = buf;
+    } else if (type == JSONBoolean) {
+        int n = json_object_get_boolean(obj, key);
+        sprintf(buf, "%d", n);
+        val = buf;
+    }
+    return val;
+}
+
+void aacenc_write_tags_from_json(m4af_ctx_t *m4af, const char *json_filename)
+{
+    char *data = 0;
+    JSON_Value *json = 0;
+    JSON_Object *root;
+    size_t i, nelts;
+    uint32_t data_size;
+    char *json_dot_path;
+    char *filename = 0;
+    aacenc_translate_generic_text_tag_ctx_t ctx = { 0 };
+
+    ctx.add = aacenc_write_tag_entry;
+    ctx.add_ctx = m4af;
+
+    filename = strdup(json_filename);
+    if ((json_dot_path = strchr(filename, '?')) != 0)
+        *json_dot_path++ = '\0';
+
+    if (!(data = aacenc_load_tag_from_file(filename, &data_size)))
+        goto DONE;
+    if (!(json = json_parse_string(data))) {
+        aacenc_fprintf(stderr, "WARNING: failed to parse JSON\n");
+        goto DONE;
+    }
+    root = json_value_get_object(json);
+    if (json_dot_path) {
+        if (!(root = json_object_dotget_object(root, json_dot_path))) {
+            aacenc_fprintf(stderr, "WARNING: %s not found in JSON\n",
+                           json_dot_path);
+            goto DONE;
+        }
+    }
+    nelts = json_object_get_count(root);
+    for (i = 0; i < nelts; ++i) {
+        char buf[256];
+        const char *key = json_object_get_name(root, i);
+        const char *val = aacenc_json_object_get_string(root, key, buf);
+        if (val) aacenc_translate_generic_text_tag(&ctx, key, val, ~0U);
+    }
+    aacenc_translate_generic_text_tag(&ctx, 0, 0, 0);
+DONE:
+    if (data) free(data);
+    if (filename) free(filename);
+    if (json) json_value_free(json);
+}
+
+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;
+
+    switch (tag->tag) {
+    case M4AF_TAG_TRACK:
+        if (sscanf(data, "%u/%u", &m, &n) >= 1)
+            m4af_add_itmf_track_tag(m4af, m, n);
+        break;
+    case M4AF_TAG_DISK:
+        if (sscanf(data, "%u/%u", &m, &n) >= 1)
+            m4af_add_itmf_disk_tag(m4af, m, n);
+        break;
+    case M4AF_TAG_GENRE_ID3:
+        if (sscanf(data, "%u", &n) == 1)
+            m4af_add_itmf_genre_tag(m4af, n);
+        break;
+    case M4AF_TAG_TEMPO:
+        if (sscanf(data, "%u", &n) == 1)
+            m4af_add_itmf_int16_tag(m4af, tag->tag, n);
+        break;
+    case M4AF_TAG_COMPILATION:
+    case M4AF_FOURCC('a','k','I','D'):
+    case M4AF_FOURCC('h','d','v','d'):
+    case M4AF_FOURCC('p','c','s','t'):
+    case M4AF_FOURCC('p','g','a','p'):
+    case M4AF_FOURCC('r','t','n','g'):
+    case M4AF_FOURCC('s','t','i','k'):
+        if (sscanf(data, "%u", &n) == 1)
+            m4af_add_itmf_int8_tag(m4af, tag->tag, n);
+        break;
+    case M4AF_FOURCC('a','t','I','D'):
+    case M4AF_FOURCC('c','m','I','D'):
+    case M4AF_FOURCC('c','n','I','D'):
+    case M4AF_FOURCC('g','e','I','D'):
+    case M4AF_FOURCC('s','f','I','D'):
+    case M4AF_FOURCC('t','v','s','n'):
+    case M4AF_FOURCC('t','v','s','s'):
+        if (sscanf(data, "%u", &n) == 1)
+            m4af_add_itmf_int32_tag(m4af, tag->tag, n);
+        break;
+    case M4AF_FOURCC('p','l','I','D'):
+        {
+            int64_t qn;
+            if (sscanf(data, "%" SCNd64, &qn) == 1)
+                m4af_add_itmf_int64_tag(m4af, tag->tag, qn);
+            break;
+        }
+    case M4AF_TAG_ARTWORK:
+        {
+            int data_type = 0;
+            if (!memcmp(data, "GIF", 3))
+                data_type = M4AF_GIF;
+            else if (!memcmp(data, "\xff\xd8\xff", 3))
+                data_type = M4AF_JPEG;
+            else if (!memcmp(data, "\x89PNG", 4))
+                data_type = M4AF_PNG;
+            if (data_type)
+                m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
+                                        data, tag->data_size);
+            break;
+        }
+    case M4AF_FOURCC('-','-','-','-'):
+        {
+            m4af_add_itmf_long_tag(m4af, tag->name, data);
+            break;
+        }
+    default:
+        if (aacenc_is_string_tag(tag->tag))
+            m4af_add_itmf_string_tag(m4af, tag->tag, data);
+        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);
+    }
+}
+
+
--- a/src/metadata.h
+++ b/src/metadata.h
@ -0,0 +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;
+    char    *name;
+    char    *data;
+    uint32_t data_size;
+} aacenc_tag_entry_t;
+
+typedef struct aacenc_tag_store_t {
+    aacenc_tag_entry_t *tag_table;
+    unsigned tag_count;
+    unsigned tag_table_capacity;
+} aacenc_tag_store_t;
+
+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;
+
+typedef void (*aacenc_tag_callback_t)(void *ctx, const char *key,
+                                      const char *value, uint32_t size);
+
+void aacenc_translate_generic_text_tag(void *ctx, const char *key,
+                                       const char *val, uint32_t size);
+
+
+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
--- a/src/parson.c
+++ b/src/parson.c
@ -0,0 +1,647 @@
+/*
+ Parson ( http://kgabis.github.com/parson/ )
+ Copyright (c) 2012 Krzysztof Gabis
+ 
+ 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.
+*/
+
+#include "parson.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#define ERROR                      0
+#define SUCCESS                    1
+#define STARTING_CAPACITY         15
+#define ARRAY_MAX_CAPACITY    122880 /* 15*(2^13) */
+#define OBJECT_MAX_CAPACITY      960 /* 15*(2^6)  */
+#define MAX_NESTING               19
+#define sizeof_token(a)       (sizeof(a) - 1)
+#define skip_char(str)        ((*str)++)
+#define skip_whitespaces(str) while (isspace(**string)) { skip_char(string); }
+#define MAX(a, b)             ((a) > (b) ? (a) : (b))
+
+#define parson_malloc(a)     malloc(a)
+#define parson_free(a)       free((void*)a)
+#define parson_realloc(a, b) realloc(a, b)
+
+/* Type definitions */
+typedef union json_value_value {
+    const char  *string;
+    double       number;
+    JSON_Object *object;
+    JSON_Array  *array;
+    int          boolean;
+    int          null;
+} JSON_Value_Value;
+
+struct json_value_t {
+    JSON_Value_Type     type;
+    JSON_Value_Value    value;
+};
+
+struct json_object_t {
+    const char **names;
+    JSON_Value **values;
+    size_t       count;
+    size_t       capacity;
+};
+
+struct json_array_t {
+    JSON_Value **items;
+    size_t       count;
+    size_t       capacity;
+};
+
+/* Various */
+static int    try_realloc(void **ptr, size_t new_size);
+static char * parson_strndup(const char *string, size_t n);
+static int    is_utf(const unsigned char *string);
+static int    is_decimal(const char *string, size_t length);
+
+/* JSON Object */
+static JSON_Object * json_object_init(void);
+static int           json_object_add(JSON_Object *object, const char *name, JSON_Value *value);
+static int           json_object_resize(JSON_Object *object, size_t capacity);
+static JSON_Value  * json_object_nget_value(const JSON_Object *object, const char *name, size_t n);
+static void          json_object_free(JSON_Object *object);
+
+/* JSON Array */
+static JSON_Array * json_array_init(void);
+static int          json_array_add(JSON_Array *array, JSON_Value *value);
+static int          json_array_resize(JSON_Array *array, size_t capacity);
+static void         json_array_free(JSON_Array *array);
+
+/* JSON Value */
+static JSON_Value * json_value_init_object(void);
+static JSON_Value * json_value_init_array(void);
+static JSON_Value * json_value_init_string(const char *string);
+static JSON_Value * json_value_init_number(double number);
+static JSON_Value * json_value_init_boolean(int boolean);
+static JSON_Value * json_value_init_null(void);
+
+/* Parser */
+static void         skip_quotes(const char **string);
+static const char * get_processed_string(const char **string);
+static JSON_Value * parse_object_value(const char **string, size_t nesting);
+static JSON_Value * parse_array_value(const char **string, size_t nesting);
+static JSON_Value * parse_string_value(const char **string);
+static JSON_Value * parse_boolean_value(const char **string);
+static JSON_Value * parse_number_value(const char **string);
+static JSON_Value * parse_null_value(const char **string);
+static JSON_Value * parse_value(const char **string, size_t nesting);
+
+/* Various */
+static int try_realloc(void **ptr, size_t new_size) {
+    void *reallocated_ptr = parson_realloc(*ptr, new_size);
+    if (!reallocated_ptr) { return ERROR; }
+    *ptr = reallocated_ptr;
+    return SUCCESS;
+}
+
+static char * parson_strndup(const char *string, size_t n) {
+    char *output_string = (char*)parson_malloc(n + 1);
+    if (!output_string) { return NULL; }
+    output_string[n] = '\0';
+    strncpy(output_string, string, n);
+    return output_string;
+}
+
+static int is_utf(const unsigned char *s) {
+    return isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) && isxdigit(s[3]);
+}
+
+static int is_decimal(const char *string, size_t length) {
+    if (length > 1 && string[0] == '0' && string[1] != '.') { return 0; }
+    if (length > 2 && !strncmp(string, "-0", 2) && string[2] != '.') { return 0; }
+    while (length--) { if (strchr("xX", string[length])) { return 0; } }
+    return 1;
+}
+
+/* JSON Object */
+static JSON_Object * json_object_init(void) {
+    JSON_Object *new_obj = (JSON_Object*)parson_malloc(sizeof(JSON_Object));
+    if (!new_obj) { return NULL; }
+    new_obj->names = (const char**)NULL;
+    new_obj->values = (JSON_Value**)NULL;
+    new_obj->capacity = 0;
+    new_obj->count = 0;
+    return new_obj;
+}
+
+static int json_object_add(JSON_Object *object, const char *name, JSON_Value *value) {
+    size_t index;
+    if (object->count >= object->capacity) {
+        size_t new_capacity = MAX(object->capacity * 2, STARTING_CAPACITY);
+        if (new_capacity > OBJECT_MAX_CAPACITY) { return ERROR; }
+        if (json_object_resize(object, new_capacity) == ERROR) { return ERROR; }
+    }
+    if (json_object_get_value(object, name) != NULL) { return ERROR; }
+    index = object->count;
+    object->names[index] = parson_strndup(name, strlen(name));
+    if (!object->names[index]) { return ERROR; }
+    object->values[index] = value;
+    object->count++;
+    return SUCCESS;
+}
+
+static int json_object_resize(JSON_Object *object, size_t capacity) {
+    if (try_realloc((void**)&object->names, capacity * sizeof(char*)) == ERROR) { return ERROR; }
+    if (try_realloc((void**)&object->values, capacity * sizeof(JSON_Value*)) == ERROR) { return ERROR; }
+    object->capacity = capacity;
+    return SUCCESS;
+}
+
+static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n) {
+    size_t i, name_length;
+    for (i = 0; i < json_object_get_count(object); i++) {
+        name_length = strlen(object->names[i]);
+        if (name_length != n) { continue; }
+        if (strncmp(object->names[i], name, n) == 0) { return object->values[i]; }
+    }
+    return NULL;
+}
+
+static void json_object_free(JSON_Object *object) {
+    while(object->count--) {
+        parson_free(object->names[object->count]);
+        json_value_free(object->values[object->count]);
+    }
+    parson_free(object->names);
+    parson_free(object->values);
+    parson_free(object);
+}
+
+/* JSON Array */
+static JSON_Array * json_array_init(void) {
+    JSON_Array *new_array = (JSON_Array*)parson_malloc(sizeof(JSON_Array));
+    if (!new_array) { return NULL; }
+    new_array->items = (JSON_Value**)NULL;
+    new_array->capacity = 0;
+    new_array->count = 0;
+    return new_array;
+}
+
+static int json_array_add(JSON_Array *array, JSON_Value *value) {
+    if (array->count >= array->capacity) {
+        size_t new_capacity = MAX(array->capacity * 2, STARTING_CAPACITY);
+        if (new_capacity > ARRAY_MAX_CAPACITY) { return ERROR; }
+        if (!json_array_resize(array, new_capacity)) { return ERROR; }
+    }
+    array->items[array->count] = value;
+    array->count++;
+    return SUCCESS;
+}
+
+static int json_array_resize(JSON_Array *array, size_t capacity) {
+    if (try_realloc((void**)&array->items, capacity * sizeof(JSON_Value*)) == ERROR) { return ERROR; }
+    array->capacity = capacity;
+    return SUCCESS;
+}
+
+static void json_array_free(JSON_Array *array) {
+    while (array->count--) { json_value_free(array->items[array->count]); }
+    parson_free(array->items);
+    parson_free(array);
+}
+
+/* JSON Value */
+static JSON_Value * json_value_init_object(void) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONObject;
+    new_value->value.object = json_object_init();
+    if (!new_value->value.object) { parson_free(new_value); return NULL; }
+    return new_value;
+}
+
+static JSON_Value * json_value_init_array(void) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONArray;
+    new_value->value.array = json_array_init();
+    if (!new_value->value.array) { parson_free(new_value); return NULL; }
+    return new_value;
+}
+
+static JSON_Value * json_value_init_string(const char *string) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONString;
+    new_value->value.string = string;
+    return new_value;
+}
+
+static JSON_Value * json_value_init_number(double number) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONNumber;
+    new_value->value.number = number;
+    return new_value;
+}
+
+static JSON_Value * json_value_init_boolean(int boolean) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONBoolean;
+    new_value->value.boolean = boolean;
+    return new_value;
+}
+
+static JSON_Value * json_value_init_null(void) {
+    JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+    if (!new_value) { return NULL; }
+    new_value->type = JSONNull;
+    return new_value;
+}
+
+/* Parser */
+static void skip_quotes(const char **string) {
+    skip_char(string);
+    while (**string != '\"') {
+        if (**string == '\0') { return; }
+        if (**string == '\\') { skip_char(string); if (**string == '\0') { return; }}
+        skip_char(string);
+    }
+    skip_char(string);
+}
+
+/* Returns contents of a string inside double quotes and parses escaped
+ characters inside.
+ Example: "\u006Corem ipsum" -> lorem ipsum */
+static const char * get_processed_string(const char **string) {
+    const char *string_start = *string;
+    char *output, *processed_ptr, *unprocessed_ptr, current_char;
+    unsigned int utf_val;
+    skip_quotes(string);
+    if (**string == '\0') { return NULL; }
+    output = parson_strndup(string_start + 1, *string  - string_start - 2);
+    if (!output) { return NULL; }
+    processed_ptr = unprocessed_ptr = output;
+    while (*unprocessed_ptr) {
+        current_char = *unprocessed_ptr;
+        if (current_char == '\\') {
+            unprocessed_ptr++;
+            current_char = *unprocessed_ptr;
+            switch (current_char) {
+                case '\"': case '\\': case '/': break;
+                case 'b': current_char = '\b'; break;
+                case 'f': current_char = '\f'; break;
+                case 'n': current_char = '\n'; break;
+                case 'r': current_char = '\r'; break;
+                case 't': current_char = '\t'; break;
+                case 'u':
+                    unprocessed_ptr++;
+                    if (!is_utf((const unsigned char*)unprocessed_ptr) ||
+                        sscanf(unprocessed_ptr, "%4x", &utf_val) == EOF) {
+                        parson_free(output); return NULL;
+                    }
+                    if (utf_val < 0x80) {
+                        current_char = utf_val;
+                    } else if (utf_val < 0x800) {
+                        *processed_ptr++ = (utf_val >> 6) | 0xC0;
+                        current_char = ((utf_val | 0x80) & 0xBF);
+                    } else {
+                        *processed_ptr++ = (utf_val >> 12) | 0xE0;
+                        *processed_ptr++ = (((utf_val >> 6) | 0x80) & 0xBF);
+                        current_char = ((utf_val | 0x80) & 0xBF);
+                    }
+                    unprocessed_ptr += 3;
+                    break;
+                default:
+                    parson_free(output);
+                    return NULL;
+                    break;
+            }
+        } else if ((unsigned char)current_char < 0x20) { /* 0x00-0x19 are invalid characters for json string (http://www.ietf.org/rfc/rfc4627.txt) */
+            parson_free(output);
+            return NULL;
+        }
+        *processed_ptr = current_char;
+        processed_ptr++;
+        unprocessed_ptr++;
+    }
+    *processed_ptr = '\0';
+    if (try_realloc((void**)&output, strlen(output) + 1) == ERROR) { return NULL; }
+    return output;
+}
+
+static JSON_Value * parse_value(const char **string, size_t nesting) {
+    if (nesting > MAX_NESTING) { return NULL; }
+    skip_whitespaces(string);
+    switch (**string) {
+        case '{':
+            return parse_object_value(string, nesting + 1);
+        case '[':
+            return parse_array_value(string, nesting + 1);
+        case '\"':
+            return parse_string_value(string);
+        case 'f': case 't':
+            return parse_boolean_value(string);
+        case '-':
+        case '0': case '1': case '2': case '3': case '4':
+        case '5': case '6': case '7': case '8': case '9':
+            return parse_number_value(string);
+        case 'n':
+            return parse_null_value(string);
+        default:
+            return NULL;
+    }
+}
+
+static JSON_Value * parse_object_value(const char **string, size_t nesting) {
+    JSON_Value *output_value = json_value_init_object(), *new_value = NULL;
+    JSON_Object *output_object = json_value_get_object(output_value);
+    const char *new_key = NULL;
+    if (!output_value) { return NULL; }
+    skip_char(string);
+    skip_whitespaces(string);
+    if (**string == '}') { skip_char(string); return output_value; } /* empty object */
+    while (**string != '\0') {
+        new_key = get_processed_string(string);
+        skip_whitespaces(string);
+        if (!new_key || **string != ':') {
+            json_value_free(output_value);
+            return NULL;
+        }
+        skip_char(string);
+        new_value = parse_value(string, nesting);
+        if (!new_value) {
+            parson_free(new_key);
+            json_value_free(output_value);
+            return NULL;
+        }
+        if(!json_object_add(output_object, new_key, new_value)) {
+            parson_free(new_key);
+            parson_free(new_value);
+            json_value_free(output_value);
+            return NULL;
+        }
+        parson_free(new_key);
+        skip_whitespaces(string);
+        if (**string != ',') { break; }
+        skip_char(string);
+        skip_whitespaces(string);
+    }
+    skip_whitespaces(string);
+    if (**string != '}' || /* Trim object after parsing is over */
+         json_object_resize(output_object, json_object_get_count(output_object)) == ERROR) {
+        json_value_free(output_value);
+        return NULL;
+    }
+    skip_char(string);
+    return output_value;
+}
+
+static JSON_Value * parse_array_value(const char **string, size_t nesting) {
+    JSON_Value *output_value = json_value_init_array(), *new_array_value = NULL;
+    JSON_Array *output_array = json_value_get_array(output_value);
+    if (!output_value) { return NULL; }
+    skip_char(string);
+    skip_whitespaces(string);
+    if (**string == ']') { /* empty array */
+        skip_char(string);
+        return output_value;
+    }
+    while (**string != '\0') {
+        new_array_value = parse_value(string, nesting);
+        if (!new_array_value) {
+            json_value_free(output_value);
+            return NULL;
+        }
+        if(json_array_add(output_array, new_array_value) == ERROR) {
+            parson_free(new_array_value);
+            json_value_free(output_value);
+            return NULL;
+        }
+        skip_whitespaces(string);
+        if (**string != ',') { break; }
+        skip_char(string);
+        skip_whitespaces(string);
+    }
+    skip_whitespaces(string);
+    if (**string != ']' || /* Trim array after parsing is over */
+         json_array_resize(output_array, json_array_get_count(output_array)) == ERROR) {
+        json_value_free(output_value);
+        return NULL;
+    }
+    skip_char(string);
+    return output_value;
+}
+
+static JSON_Value * parse_string_value(const char **string) {
+    const char *new_string = get_processed_string(string);
+    if (!new_string) { return NULL; }
+    return json_value_init_string(new_string);
+}
+
+static JSON_Value * parse_boolean_value(const char **string) {
+    size_t true_token_size = sizeof_token("true");
+    size_t false_token_size = sizeof_token("false");
+    if (strncmp("true", *string, true_token_size) == 0) {
+        *string += true_token_size;
+        return json_value_init_boolean(1);
+    } else if (strncmp("false", *string, false_token_size) == 0) {
+        *string += false_token_size;
+        return json_value_init_boolean(0);
+    }
+    return NULL;
+}
+
+static JSON_Value * parse_number_value(const char **string) {
+    char *end;
+    double number = strtod(*string, &end);
+    JSON_Value *output_value;
+    if (is_decimal(*string, end - *string)) {
+        *string = end;
+        output_value = json_value_init_number(number);
+    } else {
+        output_value = NULL;
+    }
+    return output_value;
+}
+
+static JSON_Value * parse_null_value(const char **string) {
+    size_t token_size = sizeof_token("null");
+    if (strncmp("null", *string, token_size) == 0) {
+        *string += token_size;
+        return json_value_init_null();
+    }
+    return NULL;
+}
+
+/* Parser API */
+JSON_Value * json_parse_file(const char *filename) {
+    FILE *fp = fopen(filename, "r");
+    size_t file_size;
+    char *file_contents;
+    JSON_Value *output_value;
+    if (!fp) { return NULL; }
+    fseek(fp, 0L, SEEK_END);
+    file_size = ftell(fp);
+    rewind(fp);
+    file_contents = (char*)parson_malloc(sizeof(char) * (file_size + 1));
+    if (!file_contents) { fclose(fp); return NULL; }
+    fread(file_contents, file_size, 1, fp);
+    fclose(fp);
+    file_contents[file_size] = '\0';
+    output_value = json_parse_string(file_contents);
+    parson_free(file_contents);
+    return output_value;
+}
+
+JSON_Value * json_parse_string(const char *string) {
+    if (!string || (*string != '{' && *string != '[')) { return NULL; }
+    return parse_value((const char**)&string, 0);
+}
+
+/* JSON Object API */
+JSON_Value * json_object_get_value(const JSON_Object *object, const char *name) {
+    return json_object_nget_value(object, name, strlen(name));
+}
+
+const char * json_object_get_string(const JSON_Object *object, const char *name) {
+    return json_value_get_string(json_object_get_value(object, name));
+}
+
+double json_object_get_number(const JSON_Object *object, const char *name) {
+    return json_value_get_number(json_object_get_value(object, name));
+}
+
+JSON_Object * json_object_get_object(const JSON_Object *object, const char *name) {
+    return json_value_get_object(json_object_get_value(object, name));
+}
+
+JSON_Array * json_object_get_array(const JSON_Object *object, const char *name) {
+    return json_value_get_array(json_object_get_value(object, name));
+}
+
+int json_object_get_boolean(const JSON_Object *object, const char *name) {
+    return json_value_get_boolean(json_object_get_value(object, name));
+}
+
+JSON_Value * json_object_dotget_value(const JSON_Object *object, const char *name) {
+    const char *dot_position = strchr(name, '.');
+    if (!dot_position) { return json_object_get_value(object, name); }
+    object = json_value_get_object(json_object_nget_value(object, name, dot_position - name));
+    return json_object_dotget_value(object, dot_position + 1);
+}
+
+const char * json_object_dotget_string(const JSON_Object *object, const char *name) {
+    return json_value_get_string(json_object_dotget_value(object, name));
+}
+
+double json_object_dotget_number(const JSON_Object *object, const char *name) {
+    return json_value_get_number(json_object_dotget_value(object, name));
+}
+
+JSON_Object * json_object_dotget_object(const JSON_Object *object, const char *name) {
+    return json_value_get_object(json_object_dotget_value(object, name));
+}
+
+JSON_Array * json_object_dotget_array(const JSON_Object *object, const char *name) {
+    return json_value_get_array(json_object_dotget_value(object, name));
+}
+
+int json_object_dotget_boolean(const JSON_Object *object, const char *name) {
+    return json_value_get_boolean(json_object_dotget_value(object, name));
+}
+
+size_t json_object_get_count(const JSON_Object *object) {
+    return object ? object->count : 0;
+}
+
+const char * json_object_get_name(const JSON_Object *object, size_t index) {
+    if (index >= json_object_get_count(object)) { return NULL; }
+    return object->names[index];
+}
+
+/* JSON Array API */
+JSON_Value * json_array_get_value(const JSON_Array *array, size_t index) {
+    if (index >= json_array_get_count(array)) { return NULL; }
+    return array->items[index];
+}
+
+const char * json_array_get_string(const JSON_Array *array, size_t index) {
+    return json_value_get_string(json_array_get_value(array, index));
+}
+
+double json_array_get_number(const JSON_Array *array, size_t index) {
+    return json_value_get_number(json_array_get_value(array, index));
+}
+
+JSON_Object * json_array_get_object(const JSON_Array *array, size_t index) {
+    return json_value_get_object(json_array_get_value(array, index));
+}
+
+JSON_Array * json_array_get_array(const JSON_Array *array, size_t index) {
+    return json_value_get_array(json_array_get_value(array, index));
+}
+
+int json_array_get_boolean(const JSON_Array *array, size_t index) {
+    return json_value_get_boolean(json_array_get_value(array, index));
+}
+
+size_t json_array_get_count(const JSON_Array *array) {
+    return array ? array->count : 0;
+}
+
+/* JSON Value API */
+JSON_Value_Type json_value_get_type(const JSON_Value *value) {
+    return value ? value->type : JSONError;
+}
+
+JSON_Object * json_value_get_object(const JSON_Value *value) {
+    return json_value_get_type(value) == JSONObject ? value->value.object : NULL;
+}
+
+JSON_Array * json_value_get_array(const JSON_Value *value) {
+    return json_value_get_type(value) == JSONArray ? value->value.array : NULL;
+}
+
+const char * json_value_get_string(const JSON_Value *value) {
+    return json_value_get_type(value) == JSONString ? value->value.string : NULL;
+}
+
+double json_value_get_number(const JSON_Value *value) {
+    return json_value_get_type(value) == JSONNumber ? value->value.number : 0;
+}
+
+int json_value_get_boolean(const JSON_Value *value) {
+    return json_value_get_type(value) == JSONBoolean ? value->value.boolean : -1;
+}
+
+void json_value_free(JSON_Value *value) {
+    switch (json_value_get_type(value)) {
+        case JSONObject:
+            json_object_free(value->value.object);
+            break;
+        case JSONString:
+            if (value->value.string) { parson_free(value->value.string); }
+            break;
+        case JSONArray:
+            json_array_free(value->value.array);
+            break;
+        default:
+            break;
+    }
+    parson_free(value);
+}
--- a/src/parson.h
+++ b/src/parson.h
@ -0,0 +1,100 @@
+/*
+ Parson ( http://kgabis.github.com/parson/ )
+ Copyright (c) 2012 Krzysztof Gabis
+ 
+ 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.
+*/
+
+#ifndef parson_parson_h
+#define parson_parson_h
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif    
+    
+#include <stddef.h>   /* size_t */    
+    
+/* Types and enums */
+typedef struct json_object_t JSON_Object;
+typedef struct json_array_t  JSON_Array;
+typedef struct json_value_t  JSON_Value;
+
+typedef enum json_value_type {
+    JSONError   = 0,
+    JSONNull    = 1,
+    JSONString  = 2,
+    JSONNumber  = 3,
+    JSONObject  = 4,
+    JSONArray   = 5,
+    JSONBoolean = 6
+} JSON_Value_Type;
+
+/* Parses first JSON value in a file, returns NULL in case of error */
+JSON_Value  * json_parse_file(const char *filename);
+
+/*  Parses first JSON value in a string, returns NULL in case of error */
+JSON_Value  * json_parse_string(const char *string);
+
+/* JSON Object */
+JSON_Value  * json_object_get_value  (const JSON_Object *object, const char *name);
+const char  * json_object_get_string (const JSON_Object *object, const char *name);
+JSON_Object * json_object_get_object (const JSON_Object *object, const char *name);
+JSON_Array  * json_object_get_array  (const JSON_Object *object, const char *name);
+double        json_object_get_number (const JSON_Object *object, const char *name);
+int           json_object_get_boolean(const JSON_Object *object, const char *name);
+
+/* dotget functions enable addressing values with dot notation in nested objects,
+ just like in structs or c++/java/c# objects (e.g. objectA.objectB.value).
+ Because valid names in JSON can contain dots, some values may be inaccessible
+ this way. */
+JSON_Value  * json_object_dotget_value  (const JSON_Object *object, const char *name);
+const char  * json_object_dotget_string (const JSON_Object *object, const char *name);
+JSON_Object * json_object_dotget_object (const JSON_Object *object, const char *name);
+JSON_Array  * json_object_dotget_array  (const JSON_Object *object, const char *name);
+double        json_object_dotget_number (const JSON_Object *object, const char *name);
+int           json_object_dotget_boolean(const JSON_Object *object, const char *name);
+
+/* Functions to get available names */
+size_t        json_object_get_count(const JSON_Object *object);
+const char  * json_object_get_name (const JSON_Object *object, size_t index);
+    
+/* JSON Array */
+JSON_Value  * json_array_get_value  (const JSON_Array *array, size_t index);
+const char  * json_array_get_string (const JSON_Array *array, size_t index);
+JSON_Object * json_array_get_object (const JSON_Array *array, size_t index);
+JSON_Array  * json_array_get_array  (const JSON_Array *array, size_t index);
+double        json_array_get_number (const JSON_Array *array, size_t index);
+int           json_array_get_boolean(const JSON_Array *array, size_t index);
+size_t        json_array_get_count  (const JSON_Array *array);
+
+/* JSON Value */
+JSON_Value_Type json_value_get_type   (const JSON_Value *value);
+JSON_Object *   json_value_get_object (const JSON_Value *value);
+JSON_Array  *   json_value_get_array  (const JSON_Value *value);
+const char  *   json_value_get_string (const JSON_Value *value);
+double          json_value_get_number (const JSON_Value *value);
+int             json_value_get_boolean(const JSON_Value *value);
+void            json_value_free       (JSON_Value *value);
+    
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- a/src/pcm_reader.h
+++ b/src/pcm_reader.h
@ -0,0 +1,118 @@
+/* 
+ * 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"
+
+typedef struct pcm_reader_t pcm_reader_t;
+
+typedef struct pcm_reader_vtbl_t {
+    const pcm_sample_description_t *(*get_format)(pcm_reader_t *);
+    int64_t (*get_length)(pcm_reader_t *);
+    int64_t (*get_position)(pcm_reader_t *);
+    int (*read_frames)(pcm_reader_t *, void *, unsigned);
+    void (*teardown)(pcm_reader_t **);
+} pcm_reader_vtbl_t;
+
+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)
+{
+    return r->vtbl->get_format(r);
+}
+
+static inline
+int64_t pcm_get_length(pcm_reader_t *r)
+{
+    return r->vtbl->get_length(r);
+}
+
+static inline
+int64_t pcm_get_position(pcm_reader_t *r)
+{
+    return r->vtbl->get_position(r);
+}
+
+static inline
+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)
+{
+    (*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 *pcm_open_sint16_converter(pcm_reader_t *reader);
+
+pcm_reader_t *extrapolater_open(pcm_reader_t *reader);
+
+#endif
--- a/src/pcm_readhelper.c
+++ b/src/pcm_readhelper.c
@ -0,0 +1,356 @@
+/* 
+ * 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(pcm_io_context_t *io, void *buffer, uint32_t size)
+{
+    int rc;
+    uint32_t count = 0;
+
+    do {
+        rc = io->vtbl->read(io->cookie, buffer, size - count);
+        if (rc > 0)
+            count += 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;
+}
--- a/src/pcm_sint16_converter.c
+++ b/src/pcm_sint16_converter.c
@ -0,0 +1,94 @@
+/* 
+ * 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_sint16_converter_t {
+    pcm_reader_vtbl_t *vtbl;
+    pcm_reader_t *src;
+    pcm_sample_description_t format;
+    void *pivot;
+    unsigned capacity;
+} pcm_sint16_converter_t;
+
+static inline pcm_reader_t *get_source(pcm_reader_t *reader)
+{
+    return ((pcm_sint16_converter_t *)reader)->src;
+}
+
+static const
+pcm_sample_description_t *get_format(pcm_reader_t *reader)
+{
+    return &((pcm_sint16_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_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;
+        self->pivot = p;
+        self->capacity = bytes;
+    }
+    nframes = pcm_read_frames(self->src, self->pivot, nframes);
+    if (pcm_convert_to_native_sint16(sfmt, self->pivot, nframes, buffer) < 0)
+        return -1;
+    return nframes;
+}
+
+static void teardown(pcm_reader_t **reader)
+{
+    pcm_sint16_converter_t *self = (pcm_sint16_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_sint16_converter(pcm_reader_t *reader)
+{
+    pcm_sint16_converter_t *self = 0;
+    pcm_sample_description_t *fmt;
+
+    if ((self = calloc(1, sizeof(pcm_sint16_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;
+#if WORDS_BIGENDIAN
+    fmt->sample_type = PCM_TYPE_SINT_BE;
+#else
+    fmt->sample_type = PCM_TYPE_SINT;
+#endif
+    fmt->bits_per_channel = 16;
+    fmt->bytes_per_frame = 2 * fmt->channels_per_frame;
+    return (pcm_reader_t *)self;
+}
--- a/src/wav_reader.c
+++ b/src/wav_reader.c
@ -15,35 +15,18 @@
 #include <string.h>
 #include <stdarg.h>
 #include "wav_reader.h"
-#include "m4af_endian.h"

 #define RIFF_FOURCC(a,b,c,d) ((a)|((b)<<8)|((c)<<16)|((d)<<24))

-#define TRY_IO(expr) \
-    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 {
+typedef 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;
-    wav_io_context_t io;
-    void *io_cookie;
-};
+    pcm_io_context_t io;
+} wav_reader_t;

 static const uint8_t WAV_GUID_PCM[] = {
    1, 0, 0, 0, 0, 0, 0x10, 0, 0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71
@ -52,177 +35,46 @@ static const uint8_t WAV_GUID_FLOAT[] = {
    3, 0, 0, 0, 0, 0, 0x10, 0, 0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71
 };

-const pcm_sample_description_t *wav_get_format(wav_reader_t *reader)
+static const pcm_sample_description_t *wav_get_format(pcm_reader_t *reader)
 {
-    return &reader->sample_format;
+    return &((wav_reader_t *)reader)->sample_format;
 }

-int64_t wav_get_length(wav_reader_t *reader)
+static int64_t wav_get_length(pcm_reader_t *reader)
 {
-    return reader->length;
+    return ((wav_reader_t *)reader)->length;
 }

-int64_t wav_get_position(wav_reader_t *reader)
+static int64_t wav_get_position(pcm_reader_t *reader)
 {
-    return reader->position;
+    return ((wav_reader_t *)reader)->position;
 }

-void wav_teardown(wav_reader_t **reader)
+static void wav_teardown(pcm_reader_t **reader)
 {
    free(*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 fcc;
-    return 0;
+    return (pcm_scanl(&reader->io, "LL", &fcc, chunk_size) == 2) ? fcc : 0;
 }

-int wav_read_frames(wav_reader_t *reader, void *buffer, unsigned nframes)
+static
+int wav_read_frames(pcm_reader_t *preader, void *buffer, unsigned nframes)
 {
    int rc;
    unsigned nbytes;
+    wav_reader_t *reader = (wav_reader_t *)preader;

    if (!reader->ignore_length && nframes > reader->length - reader->position)
        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;
@ -237,12 +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,
-                  fcc == RIFF_FOURCC('d','s','6','4') && chunk_size >= 28);
-    TRY_IO(riff_scan(reader, "QQQL",
+    ENSURE(fcc == RIFF_FOURCC('d','s','6','4') && chunk_size >= 28);
+    TRY_IO(pcm_scanl(&reader->io, "QQQL",
                     &riff_size, length, &sample_count, &table_size) != 4);
-    TRY_IO(riff_skip(reader, (chunk_size - 27) & ~1));
-    reader->data_offset += (chunk_size + 9) & ~1;
+    TRY_IO(pcm_skip(&reader->io, (chunk_size - 27) & ~1));
 FAIL:
    return -1;
 }
@ -256,41 +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);
-    TRY_IO(riff_scan(reader, "SSLLSS", &wFormatTag, &nChannels,
+    ENSURE(size >= 16);
+    TRY_IO(pcm_scanl(&reader->io, "SSLLSS", &wFormatTag, &nChannels,
                     &nSamplesPerSec, &nAvgBytesPerSec, &nBlockAlign,
                     &wBitsPerSample) != 6);
    wValidBitsPerSample = wBitsPerSample;

-    if (wFormatTag != 1 && wFormatTag != 3 && wFormatTag != 0xfffe) {
-        reader->last_error = WAV_UNSUPPORTED_FORMAT;
-        goto FAIL;
-    }
-    ASSERT_FORMAT(reader,
-                  nChannels && nSamplesPerSec && nAvgBytesPerSec &&
-                  nBlockAlign && wBitsPerSample && !(wBitsPerSample & 7) &&
-                  nBlockAlign == nChannels * wBitsPerSample / 8);
+    ENSURE(wFormatTag == 1 || wFormatTag == 3 || wFormatTag == 0xfffe);
+    ENSURE(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);
-        TRY_IO(riff_scan(reader, "SSL",
+        ENSURE(size >= 40);
+        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) {
-            reader->last_error = WAV_UNSUPPORTED_FORMAT;
+        else if (memcmp(guid, WAV_GUID_PCM, 16) != 0)
            goto FAIL;
-        }
-        ASSERT_FORMAT(reader,
-                      wValidBitsPerSample &&
-                      wValidBitsPerSample <= wBitsPerSample);
-        TRY_IO(riff_skip(reader, (size - 39) & ~1));
+        ENSURE(wValidBitsPerSample && wValidBitsPerSample <= wBitsPerSample);
+        TRY_IO(pcm_skip(&reader->io, (size - 39) & ~1));
    }
    reader->sample_format.sample_rate = nSamplesPerSec;
    reader->sample_format.bits_per_channel = wValidBitsPerSample;
@ -315,13 +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') &&
-        container != RIFF_FOURCC('R','F','6','4'))
-        goto FAIL;
-    TRY_IO(riff_read32(reader, &fcc));
-    if (fcc != RIFF_FOURCC('W','A','V','E'))
-        goto FAIL;
-    reader->data_offset = 12;
+    ENSURE(container == RIFF_FOURCC('R','I','F','F') ||
+           container == RIFF_FOURCC('R','F','6','4'));
+    TRY_IO(pcm_read32le(&reader->io, &fcc));
+    ENSURE(fcc == RIFF_FOURCC('W','A','V','E'));

    if (container == RIFF_FOURCC('R','F','6','4'))
        riff_ds64(reader, data_length);
@ -332,12 +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;
@ -345,8 +184,15 @@ FAIL:
    return -1;
 }

-wav_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
-                       int ignore_length)
+static pcm_reader_vtbl_t wav_vtable = {
+    wav_get_format,
+    wav_get_length,
+    wav_get_position,
+    wav_read_frames,
+    wav_teardown
+};
+
+pcm_reader_t *wav_open(pcm_io_context_t *io, int ignore_length)
 {
    wav_reader_t *reader = 0;
    int64_t data_length;
@ -354,8 +200,7 @@ wav_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));
-    reader->io_cookie = io_cookie;
+    memcpy(&reader->io, io, sizeof(pcm_io_context_t));
    reader->ignore_length = ignore_length;
    if (wav_parse(reader, &data_length) < 0) {
        free(reader);
@ -367,37 +212,34 @@ wav_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->io.seek(reader->io_cookie, 0, SEEK_END) >= 0) {
-            int64_t size = reader->io.tell(reader->io_cookie);
+    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;
-            reader->io.seek(reader->io_cookie, reader->data_offset, SEEK_SET);
+            pcm_seek(&reader->io, reader->data_offset, SEEK_SET);
        }
    }
-    return reader;
+    reader->vtbl = &wav_vtable;
+    return (pcm_reader_t *)reader;
 }

-wav_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 (io_ctx->seek && io_ctx->tell) {
-        if (reader->io.seek(reader->io_cookie, 0, SEEK_END) >= 0) {
-            int64_t size = reader->io.tell(reader->io_cookie);
-            if (size > 0)
-                reader->length = size / desc->bytes_per_frame;
-            reader->io.seek(reader->io_cookie, reader->data_offset, SEEK_SET);
-        }
+    if (pcm_seek(&reader->io, 0, SEEK_END) >= 0) {
+        int64_t size = pcm_tell(&reader->io);
+        if (size > 0)
+            reader->length = size / reader->sample_format.bytes_per_frame;
+        pcm_seek(&reader->io, 0, SEEK_SET);
    } else
        reader->length = INT64_MAX;
-    return reader;
+    reader->vtbl = &wav_vtable;
+    return (pcm_reader_t *)reader;
 }
-
-
--- a/src/wav_reader.h
+++ b/src/wav_reader.h
@ -6,34 +6,10 @@
 #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;
-
-wav_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
-                       int ignore_length);
-wav_reader_t *raw_open(wav_io_context_t *io_ctx, void *io_cookie,
+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);
-const pcm_sample_description_t *wav_get_format(wav_reader_t *reader);
-int wav_read_frames(wav_reader_t *reader, void *buffer, unsigned nframes);
-int64_t wav_get_length(wav_reader_t *reader);
-int64_t wav_get_position(wav_reader_t *reader);
-void wav_teardown(wav_reader_t **reader);

 #endif
--- a/version.h
+++ b/version.h
@ -1,4 +1,4 @@
 #ifndef VERSION_H
 #define VERSION_H
-const char *fdkaac_version = "0.1.1";
+const char *fdkaac_version = "0.5.3";
 #endif
Author	SHA1	Message	Date
nu774	5063c6dce1	bump version	2014-02-17 13:55:08 +09:00
nu774	57aa91419d	fix: CAF chan chunk using channel bitmap was not correctly handled	2014-02-17 13:51:20 +09:00
nu774	b3dcf08647	update ChangeLog	2014-01-18 17:47:03 +09:00
nu774	a7c4895534	bump version	2014-01-18 17:44:51 +09:00
nu774	209130e887	fix reading of caf file without chan chunk Since channel map was not initialized, first channel was copied to every other channel.	2014-01-18 17:41:57 +09:00
nu774	b6ab92a9e7	Merge pull request #9 from rbrito/fix-typo README: Fix typo in bandwidth to match CLI options.	2013-11-17 22:02:43 -08:00
Rogério Brito	e18fe91a40	man: Regen manpage with hyphens escaped. Otherwise, automated verification programs like Debian's lintian complain about them. Signed-off-by: Rogério Brito <rbrito@ime.usp.br>	2013-11-18 02:55:18 -02:00
Rogério Brito	472e82e42f	README: Remove trailing whitespaces that end up in the manpages. Signed-off-by: Rogério Brito <rbrito@ime.usp.br>	2013-11-18 02:52:35 -02:00
Rogério Brito	ce0833f8e5	README: Fix typo in bandwidth to match CLI options. Signed-off-by: Rogério Brito <rbrito@ime.usp.br>	2013-11-18 02:48:39 -02:00
nu774	661f883dce	add genman.sh, update fdkaac.1	2013-11-08 23:18:20 +09:00
nu774	b815f858d0	update ChangeLog	2013-11-08 12:49:19 +09:00
nu774	5d6ea58e92	bump version	2013-11-08 12:48:14 +09:00
nu774	71e4764062	fix to use libFDKAAC signaling mode 1 It turned out that mode 1 is explicit, backward compatible signaling. We don't have to implement it on our side.	2013-11-08 12:23:52 +09:00
nu774	a26e3cf3e8	fix README	2013-11-05 15:45:08 +09:00
nu774	c6e18ebec1	rename README.md -> README	2013-11-04 22:53:28 +09:00
nu774	c1db26327a	Update README -> README.md, generate groff manpage from README.md	2013-11-04 15:33:01 +09:00
nu774	1c1d1931cb	update ChangeLog	2013-11-04 12:19:36 +09:00
nu774	2ecae04c89	update git2changelog to accept non-ascii output	2013-11-04 12:18:27 +09:00
nu774	30c77dfb6f	add manpage	2013-11-04 12:15:09 +09:00
nu774	ed646ccf79	fix gcc warnings	2013-11-03 22:40:26 +09:00
nu774	8009f87dca	Merge pull request #7 from rbrito/misc-fixes gitignore: Add list of files to ignore.	2013-11-03 05:26:02 -08:00
Rogério Brito	d09acb7283	gitignore: Add list of files to ignore. All of these files are generated by autotools or by the compilation and they do not belong in a version control. Signed-off-by: Rogério Brito <rbrito@ime.usp.br>	2013-11-03 10:45:51 -02:00
nu774	8ac221b853	update ChangeLog	2013-11-03 18:13:59 +09:00
nu774	2c116b15d5	bump version	2013-11-03 18:12:43 +09:00
nu774	e1adc17835	add --sbr-ratio to support AACENC_SBR_RATIO appeared on libFDK 3.4.12	2013-11-03 18:09:56 +09:00
nu774	3c0f152d39	support 7.1 channel mode added on FDK 3.4.12	2013-11-03 18:08:46 +09:00
nu774	5732f1f6c5	update ChangeLog	2013-10-30 19:05:13 +09:00
nu774	a3271927b8	bump version	2013-10-30 19:02:00 +09:00
nu774	3de0e22dcc	use tell() to obtain data chunk offset	2013-10-30 14:27:28 +09:00
nu774	d533c8e002	rename aacenc_result_t -> aacenc_frame_t, simplify write_sample()	2013-10-30 11:58:30 +09:00
nu774	c5eec15549	prepend 1 sample zero padding in case of SBR and enc_delay is odd This is required because odd enc_delay cannot be exactly expressed in downsampled scale, and HE-AACv2 FDK encoder actually has odd enc_delay.	2013-10-30 02:09:23 +09:00
nu774	3b518efd31	cleanup interface of aac_encode_frame()	2013-10-30 02:09:23 +09:00
nu774	556a3db11b	add some copyright notice	2013-10-30 02:09:23 +09:00
nu774	4d48b091d4	smart padding for better gapless playback Taken smart padding code using LPC extrapolation from vorbis/opus. Padding is done on both beginning and ending, but enc_delay and padding remains the same (we discard extra padding frame introduced on our side after encoding).	2013-10-30 02:09:08 +09:00
nu774	d11b044131	fix unused variable warning	2013-10-29 19:36:22 +09:00
nu774	6709cf694c	fix warning: cast size_t as sprintf() arg to int	2013-10-29 19:36:22 +09:00
nu774	7259767b09	fix vcxproj	2013-10-29 19:24:29 +09:00
nu774	3aa2787e34	fix pcm_seek() to inline	2013-10-29 19:24:29 +09:00
nu774	b159a7b095	bump version	2013-10-27 22:43:18 +09:00
nu774	be234dc464	add --include-sbr-delay	2013-10-27 22:40:42 +09:00
nu774	c9ac59e8d3	fix help message: show -I as shorthand for --ignorelength	2013-10-27 21:32:42 +09:00
nu774	9b8f9915c2	remove --sbr-signaling Instead, we always use explicit/backward compatible SBR signaling by ASC extension in case of m4a, which is not supported by FDK library (so we do it on our side). For LOAS, we use explicit hierarchical signaling.	2013-10-27 21:15:12 +09:00
nu774	5ccbfaa710	re-fix #ifdef cond for lrint()	2013-10-26 11:29:30 +09:00
nu774	8f05e0751b	tag mapping: add recorded date and tempo, remove performer->artist	2013-10-26 01:38:58 +09:00
nu774	053279541b	fix MSVC12 build issue	2013-10-25 17:04:26 +09:00
nu774	f48bf1294c	fix build issue on platform where fileno is a naive macro	2013-10-25 10:25:33 +09:00
nu774	8896249ac5	update ChangeLog	2013-10-25 00:09:27 +09:00
nu774	5f0d784cd3	bump version	2013-10-25 00:03:13 +09:00
nu774	6a3b77de8e	update README	2013-10-25 00:02:23 +09:00
nu774	1af8624b00	caf input support	2013-10-24 23:47:03 +09:00
nu774	29a8f73faf	refactor pcm io routines	2013-10-24 10:38:27 +09:00
nu774	3b666b7546	cleanup metadata handling	2013-10-23 23:35:23 +09:00
nu774	8cb6378fca	--tag-from-json: properly support number/total format in json track field	2013-10-23 12:19:14 +09:00
nu774	bd8c9a5d15	bump version	2013-10-22 19:50:35 +09:00
nu774	91ef87b610	fixed bogus sgpd written on --gapless-mode=1 and 2	2013-10-22 19:49:01 +09:00
nu774	29e0948097	bump version	2013-10-21 00:35:51 +09:00
nu774	e8e9f79eec	reimplement int16 conversion as pcm_reader	2013-10-21 00:17:14 +09:00
nu774	2d744bd56c	add abstraction layer for pcm reading	2013-10-20 22:50:10 +09:00
nu774	2f6fc566cc	improve handling of avgBitrate	2013-10-20 21:33:06 +09:00
nu774	0c502d30e5	update ChangeLog and git2changelog.py	2013-10-19 12:54:50 +09:00
nu774	b87f2251a4	bump version	2013-10-18 22:36:10 +09:00
nu774	afe73f4916	update README	2013-10-18 22:35:34 +09:00
nu774	fe2d3aa3e7	set avgBitrate field to zero for 14496-1 compliance	2013-10-18 22:11:09 +09:00
nu774	2f960ef8fd	updated ChangeLog with new git2changelog.py	2013-09-07 15:58:59 +09:00
nu774	fb2b36350a	add --moov-before-mdat	2013-06-14 16:52:18 +09:00
nu774	f5363b23c3	fix an error message	2013-03-04 01:03:55 +09:00
nu774	9517c27537	bump version	2013-03-03 01:50:57 +09:00
nu774	d317e29d46	add --gapless-mode	2013-03-03 01:49:55 +09:00
nu774	ffc230a83e	simplify __timeb64 condition	2013-02-20 10:45:41 +09:00
nu774	70e912edba	use fseeko64() on i686-pc-mingw32	2013-02-20 10:29:12 +09:00
nu774	bd02d0e753	fix build issue on i686-pc-mingw (struct __timeb64 is missing)	2013-02-18 02:05:07 +09:00
nu774	d6a8b9652a	bump version	2013-02-17 21:51:06 +09:00
nu774	229c3ead72	fix to accept option -C	2013-02-17 21:44:29 +09:00
nu774	4d060c0da0	bump version	2013-02-16 21:13:07 +09:00
nu774	1184a1f52b	refine json metadata importing	2013-02-16 13:03:02 +09:00
nu774	93fb917b75	m4af: duplication check on adding tags	2013-02-16 13:02:05 +09:00
nu774	cbb23cdbd8	add --tag-from-json	2013-02-15 22:26:17 +09:00
nu774	721d977f59	fix implicit int variable decl.	2013-02-15 17:27:08 +09:00
nu774	e4bbeeb016	update m4af	2013-02-15 17:26:28 +09:00
nu774	2642af896e	bump version	2013-02-03 12:11:50 +09:00
nu774	7ce09815f7	win32: change _wfopen() -> wfsopen()	2013-02-03 12:11:13 +09:00
nu774	adbd1aac0e	update README (add note for character encoding)	2013-01-30 14:27:37 +09:00
nu774	fe4d497877	bump version	2013-01-28 10:54:37 +09:00
nu774	bd3b4b343a	gracefully shutdown on signals	2013-01-28 10:53:19 +09:00
nu774	406f0e0f44	fix MSVC project build issue	2013-01-27 11:11:03 +09:00
nu774	1170c9a610	bump version	2013-01-25 12:44:35 +09:00
nu774	a56831da9f	add --tag-from-file	2013-01-25 12:43:53 +09:00
nu774	aa2ca1e348	add --silent	2013-01-24 23:58:26 +09:00
nu774	7b1f213618	retab	2013-01-19 18:19:10 +09:00
nu774	5af13f7d79	bump version	2013-01-19 18:14:00 +09:00
nu774	5c534696a9	fix crash on wrong long option, rename --ignore-length to --ignorelength	2013-01-19 18:12:49 +09:00
nu774	33e12bc4f5	bump version	2013-01-17 17:12:06 +09:00
nu774	bfb6aa3cb8	compat_win32: free argv with atexit()	2013-01-17 17:11:19 +09:00
nu774	360cf7dc8b	take care of COPYRIGHT-SIGN in UTF-8	2013-01-17 17:10:21 +09:00