diff --git a/MSVC/fdkaac.vcxproj b/MSVC/fdkaac.vcxproj
index 6d71c90..99840f0 100644
--- a/MSVC/fdkaac.vcxproj
+++ b/MSVC/fdkaac.vcxproj
@@ -102,6 +102,7 @@ copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\
+
@@ -115,6 +116,7 @@ copy ..\fdk-aac\libSYS\include\machine_type.h include\fdk-aac\
+
diff --git a/Makefile.am b/Makefile.am
index 5f8c678..afe85ed 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@ fdkaac_SOURCES = \
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
diff --git a/src/main.c b/src/main.c
index 83fb754..a178070 100644
--- a/src/main.c
+++ b/src/main.c
@@ -643,12 +643,15 @@ 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, 0 };
+
static
pcm_reader_t *open_input(aacenc_param_ex_t *params)
{
- wav_io_context_t wav_io = {
- read_callback, seek_callback, tell_callback
- };
+ pcm_io_context_t io = { 0 };
pcm_reader_t *reader = 0;
struct stat stb = { 0 };
@@ -657,11 +660,13 @@ pcm_reader_t *open_input(aacenc_param_ex_t *params)
strerror(errno));
goto END;
}
- if (fstat(fileno(params->input_fp), &stb) == 0
- && (stb.st_mode & S_IFMT) != S_IFREG) {
- wav_io.seek = 0;
- wav_io.tell = 0;
- }
+ io.cookie = params->input_fp;
+ if (fstat(fileno(io.cookie), &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 };
@@ -673,13 +678,12 @@ pcm_reader_t *open_input(aacenc_param_ex_t *params)
desc.channels_per_frame = params->raw_channels;
bytes_per_channel = (desc.bits_per_channel + 7) / 8;
desc.bytes_per_frame = params->raw_channels * bytes_per_channel;
- if ((reader = raw_open(&wav_io, params->input_fp, &desc)) == 0) {
+ if ((reader = raw_open(&io, &desc)) == 0) {
fprintf(stderr, "ERROR: failed to open raw input\n");
goto END;
}
} else {
- if ((reader = wav_open(&wav_io, params->input_fp,
- params->ignore_length)) == 0) {
+ if ((reader = wav_open(&io, params->ignore_length)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto END;
}
diff --git a/src/pcm_reader.h b/src/pcm_reader.h
index 26e7925..61debad 100644
--- a/src/pcm_reader.h
+++ b/src/pcm_reader.h
@@ -17,6 +17,21 @@ struct pcm_reader_t {
pcm_reader_vtbl_t *vtbl;
};
+typedef int (*pcm_read_callback)(void *cookie, void *data, uint32_t count);
+typedef int (*pcm_seek_callback)(void *cookie, int64_t off, int whence);
+typedef int64_t (*pcm_tell_callback)(void *cookie);
+
+typedef struct pcm_io_vtbl_t {
+ pcm_read_callback read;
+ pcm_seek_callback seek;
+ pcm_tell_callback tell;
+} pcm_io_vtbl_t;
+
+typedef struct pcm_io_context_t {
+ pcm_io_vtbl_t *vtbl;
+ void *cookie;
+} pcm_io_context_t;
+
static inline
const pcm_sample_description_t *pcm_get_format(pcm_reader_t *r)
{
@@ -49,4 +64,31 @@ void pcm_teardown(pcm_reader_t **r)
pcm_reader_t *pcm_open_sint16_converter(pcm_reader_t *reader);
+#define TRY_IO(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 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, ...);
+
#endif
diff --git a/src/pcm_readhelper.c b/src/pcm_readhelper.c
new file mode 100644
index 0000000..70b47f5
--- /dev/null
+++ b/src/pcm_readhelper.c
@@ -0,0 +1,154 @@
+/*
+ * 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
+#endif
+
+#include
+#include
+#include "pcm_reader.h"
+#include "m4af_endian.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;
+}
diff --git a/src/wav_reader.c b/src/wav_reader.c
index 334910e..133854b 100644
--- a/src/wav_reader.c
+++ b/src/wav_reader.c
@@ -15,23 +15,12 @@
#include
#include
#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) \
+#define ENSURE(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;\
- } \
+ if (!(expr)) goto FAIL;\
} while (0)
struct wav_reader_t {
@@ -41,9 +30,7 @@ struct wav_reader_t {
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;
};
static const uint8_t WAV_GUID_PCM[] = {
@@ -74,144 +61,11 @@ static void wav_teardown(pcm_reader_t **reader)
*reader = 0;
}
-static
-int riff_read(wav_reader_t *reader, void *buffer, uint32_t size)
-{
- int rc;
- uint32_t count = 0;
-
- if (reader->last_error)
- return -1;
- do {
- rc = reader->io.read(reader->io_cookie, buffer, size - count);
- if (rc > 0)
- count += rc;
- else if (rc < 0)
- reader->last_error = WAV_IO_ERROR;
- } while (rc > 0 && count < size);
- return count > 0 ? count : rc;
-}
-
-static
-int riff_skip(wav_reader_t *reader, int64_t count)
-{
- char buff[8192];
- int rc;
-
- if (reader->last_error)
- return -1;
- if (count == 0)
- return 0;
- if (reader->io.seek &&
- reader->io.seek(reader->io_cookie, count, SEEK_CUR) >= 0)
- return 0;
-
- do {
- if ((rc = riff_read(reader, buff, count > 8192 ? 8192 : count)) > 0)
- count -= rc;
- } while (rc > 0 && count > 0);
-
- if (count > 0)
- reader->last_error = WAV_IO_ERROR;
- return reader->last_error ? -1 : 0;
-}
-
-static
-int riff_seek(wav_reader_t *reader, int64_t off, int whence)
-{
- int rc;
- if (reader->last_error)
- return -1;
- if (!reader->io.seek)
- goto FAIL;
- if ((rc = reader->io.seek(reader->io_cookie, off, whence)) < 0)
- goto FAIL;
- return 0;
-FAIL:
- reader->last_error = WAV_IO_ERROR;
- return -1;
-}
-
-static
-int64_t riff_tell(wav_reader_t *reader)
-{
- int64_t off;
-
- if (reader->last_error || !reader->io.tell)
- return -1;
- off = reader->io.tell(reader->io_cookie);
- if (off < 0) {
- reader->last_error = WAV_IO_ERROR;
- return -1;
- }
- return off;
-}
-
-static
-int riff_read16(wav_reader_t *reader, uint16_t *value)
-{
- TRY_IO(riff_read(reader, value, 2) != 2);
- *value = m4af_ltoh16(*value);
- return 0;
-FAIL:
- return -1;
-}
-
-static
-int riff_read32(wav_reader_t *reader, uint32_t *value)
-{
- TRY_IO(riff_read(reader, value, 4) != 4);
- *value = m4af_ltoh32(*value);
- return 0;
-FAIL:
- return -1;
-}
-
-static
-int riff_read64(wav_reader_t *reader, uint64_t *value)
-{
- TRY_IO(riff_read(reader, value, 8) != 8);
- *value = m4af_ltoh64(*value);
- return 0;
-FAIL:
- return -1;
-}
-
-static
-int riff_scan(wav_reader_t *reader, const char *fmt, ...)
-{
- int c, count = 0;
- va_list ap;
-
- va_start(ap, fmt);
- while ((c = *fmt++)) {
- switch (c) {
- case 'S':
- TRY_IO(riff_read16(reader, va_arg(ap, uint16_t*)));
- ++count;
- break;
- case 'L':
- TRY_IO(riff_read32(reader, va_arg(ap, uint32_t*)));
- ++count;
- break;
- case 'Q':
- TRY_IO(riff_read64(reader, va_arg(ap, uint64_t*)));
- ++count;
- break;
- }
- }
-FAIL:
- va_end(ap);
- return count;
-}
-
static
uint32_t riff_next_chunk(wav_reader_t *reader, uint32_t *chunk_size)
{
uint32_t fcc;
- if (riff_scan(reader, "LL", &fcc, chunk_size) == 2)
- return fcc;
- return 0;
+ return (pcm_scanl(&reader->io, "LL", &fcc, chunk_size) == 2) ? fcc : 0;
}
static
@@ -225,7 +79,7 @@ int wav_read_frames(pcm_reader_t *preader, void *buffer, unsigned nframes)
nframes = reader->length - reader->position;
nbytes = nframes * reader->sample_format.bytes_per_frame;
if (nbytes) {
- if ((rc = riff_read(reader, buffer, nbytes)) < 0)
+ if ((rc = pcm_read(&reader->io, buffer, nbytes)) < 0)
return -1;
nframes = rc / reader->sample_format.bytes_per_frame;
reader->position += nframes;
@@ -240,11 +94,10 @@ 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));
+ TRY_IO(pcm_skip(&reader->io, (chunk_size - 27) & ~1));
reader->data_offset += (chunk_size + 9) & ~1;
FAIL:
return -1;
@@ -259,41 +112,34 @@ 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;
@@ -318,12 +164,10 @@ 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;
+ 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'));
reader->data_offset = 12;
if (container == RIFF_FOURCC('R','F','6','4'))
@@ -338,7 +182,7 @@ int wav_parse(wav_reader_t *reader, int64_t *data_length)
reader->data_offset += 8;
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;
}
@@ -356,8 +200,7 @@ static pcm_reader_vtbl_t wav_vtable = {
wav_teardown
};
-pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
- int ignore_length)
+pcm_reader_t *wav_open(pcm_io_context_t *io, int ignore_length)
{
wav_reader_t *reader = 0;
int64_t data_length;
@@ -365,8 +208,7 @@ pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
if ((reader = calloc(1, sizeof(wav_reader_t))) == 0)
return 0;
- memcpy(&reader->io, io_ctx, sizeof(wav_io_context_t));
- 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);
@@ -378,39 +220,34 @@ pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
else
reader->length = data_length / bpf;
- if (reader->length == INT64_MAX && reader->io.seek && reader->io.tell) {
- if (reader->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);
}
}
reader->vtbl = &wav_vtable;
return (pcm_reader_t *)reader;
}
-pcm_reader_t *raw_open(wav_io_context_t *io_ctx, void *io_cookie,
+pcm_reader_t *raw_open(pcm_io_context_t *io,
const pcm_sample_description_t *desc)
{
wav_reader_t *reader = 0;
if ((reader = calloc(1, sizeof(wav_reader_t))) == 0)
return 0;
- memcpy(&reader->io, io_ctx, sizeof(wav_io_context_t));
+ memcpy(&reader->io, io, sizeof(pcm_io_context_t));
memcpy(&reader->sample_format, desc, sizeof(pcm_sample_description_t));
- reader->io_cookie = io_cookie;
- if (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;
reader->vtbl = &wav_vtable;
return (pcm_reader_t *)reader;
}
-
-
diff --git a/src/wav_reader.h b/src/wav_reader.h
index 62afbc4..225064a 100644
--- a/src/wav_reader.h
+++ b/src/wav_reader.h
@@ -8,28 +8,10 @@
#include "lpcm.h"
#include "pcm_reader.h"
-enum wav_error_code {
- WAV_IO_ERROR = 1,
- WAV_NO_MEMORY,
- WAV_INVALID_FORMAT,
- WAV_UNSUPPORTED_FORMAT
-};
-
-typedef int (*wav_read_callback)(void *cookie, void *data, uint32_t size);
-typedef int (*wav_seek_callback)(void *cookie, int64_t off, int whence);
-typedef int64_t (*wav_tell_callback)(void *cookie);
-
-typedef struct wav_io_context_t {
- wav_read_callback read;
- wav_seek_callback seek;
- wav_tell_callback tell;
-} wav_io_context_t;
-
typedef struct wav_reader_t wav_reader_t;
-pcm_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
- int ignore_length);
-pcm_reader_t *raw_open(wav_io_context_t *io_ctx, void *io_cookie,
+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);
#endif