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Implemented reading AAC from AVIs.

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This commit is contained in:
Moritz Bunkus 2004-04-13 21:49:59 +00:00
parent b190f77ee1
commit a1516ef81d
2 changed files with 73 additions and 26 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2004-04-13 Moritz Bunkus <moritz@bunkus.org>
* mkvmerge: new feature: Implemented reading AAC from AVIs.
2004-04-11 Moritz Bunkus <moritz@bunkus.org>
* mkvmerge: bug fix: The Flac packetizer was accessing

83
src/input/r_avi.cpp
View File

@ -40,13 +40,15 @@ extern "C" {
#endif
#include "mkvmerge.h"
#include "aac_common.h"
#include "common.h"
#include "error.h"
#include "r_avi.h"
#include "p_video.h"
#include "p_pcm.h"
#include "p_mp3.h"
#include "p_aac.h"
#include "p_ac3.h"
#include "p_mp3.h"
#include "p_pcm.h"
#include "p_video.h"
#define PFX "avi_reader: "
#define MIN_CHUNK_SIZE 128000
@ -373,10 +375,16 @@ avi_reader_c::add_audio_demuxer(int aid) {
} else {
ti->private_data = NULL;
ti->private_size = 0;
codec_data_size = 0;
}
#else
wfe = avi->wave_format_ex[aid];
AVI_set_audio_track(avi, aid);
if (AVI_read_audio_chunk(avi, NULL) < 0) {
mxwarn("Could not find an index for audio track %d (avilib error message: "
"%s). Skipping track.\n", aid + 1, AVI_strerror());
return;
}
audio_format = AVI_audio_format(avi);
demuxer.samples_per_second = AVI_audio_rate(avi);
demuxer.channels = AVI_audio_channels(avi);
@ -394,7 +402,7 @@ avi_reader_c::add_audio_demuxer(int aid) {
switch(audio_format) {
case 0x0001: // raw PCM audio
if (verbose)
mxinfo("+-> Using PCM output module for audio track ID %d.\n",
mxinfo("+-> Using the PCM output module for audio track ID %d.\n",
aid + 1);
packetizer = new pcm_packetizer_c(this, demuxer.samples_per_second,
demuxer.channels,
@ -402,21 +410,48 @@ avi_reader_c::add_audio_demuxer(int aid) {
break;
case 0x0055: // MP3
if (verbose)
mxinfo("+-> Using MPEG audio output module for audio track ID %d.\n",
aid + 1);
mxinfo("+-> Using the MPEG audio output module for audio track ID "
"%d.\n", aid + 1);
packetizer = new mp3_packetizer_c(this, demuxer.samples_per_second,
demuxer.channels, ti);
break;
case 0x2000: // AC3
if (verbose)
mxinfo("+-> Using AC3 output module for audio track ID %d.\n",
mxinfo("+-> Using the AC3 output module for audio track ID %d.\n",
aid + 1);
packetizer = new ac3_packetizer_c(this, demuxer.samples_per_second,
demuxer.channels, 0, ti);
break;
case 0x00ff: { // AAC
int profile, channels, sample_rate, output_sample_rate;
bool is_sbr;
if ((ti->private_size != 2) && (ti->private_size != 5))
mxerror("The AAC track %d does not contain valid headers. The extra "
"header size is %d bytes, expected were 2 or 5 bytes.\n",
aid + 1, ti->private_size);
if (!parse_aac_data(ti->private_data, ti->private_size, profile,
channels, sample_rate, output_sample_rate,
is_sbr))
mxerror("The AAC track %d does not contain valid headers. Could not "
"parse the AAC information.\n", aid + 1);
if (is_sbr)
profile = AAC_PROFILE_SBR;
demuxer.samples_per_second = sample_rate;
demuxer.channels = channels;
if (verbose)
mxinfo("+-> Using the AAC output module for audio track ID %d.\n",
aid + 1);
packetizer = new aac_packetizer_c(this, AAC_ID_MPEG4, profile,
demuxer.samples_per_second,
demuxer.channels, ti, false, true);
if (is_sbr)
packetizer->set_audio_output_sampling_freq(output_sample_rate);
break;
}
default:
mxerror("Unknown audio format 0x%04x for audio track ID %d.\n",
audio_format, aid + 1);
mxerror("Unknown/unsupported audio format 0x%04x for audio track ID "
"%d.\n", audio_format, aid + 1);
}
demuxer.ptzr = add_packetizer(packetizer);
@ -510,7 +545,8 @@ avi_reader_c::read(generic_packetizer_c *ptzr) {
done = true;
} else {
// key = is_keyframe(chunk, nread, key);
old_chunk = (unsigned char *)safememdup(chunk, nread);
old_chunk = chunk;
chunk = (unsigned char *)safemalloc(chunk_size);
old_key = key;
old_nread = nread;
frames++;
@ -564,7 +600,8 @@ avi_reader_c::read(generic_packetizer_c *ptzr) {
if (! last_frame) {
if (old_chunk != NULL)
safefree(old_chunk);
old_chunk = (unsigned char *)safememdup(chunk, nread);
old_chunk = chunk;
chunk = (unsigned char *)safemalloc(chunk_size);
old_key = key;
old_nread = nread;
} else if (nread > 0) {
@ -613,24 +650,24 @@ avi_reader_c::read(generic_packetizer_c *ptzr) {
demuxer->frame = demuxer->maxframes;
}
#else
unsigned char *audio_chunk;
AVI_set_audio_track(avi, demuxer->aid);
if (AVI_audio_format(avi) == 0x0001) {
size = demuxer->channels * demuxer->bits_per_sample *
demuxer->samples_per_second / 8 / 4;
if (size > chunk_size)
size = chunk_size;
} else
size = MIN_CHUNK_SIZE;
size = AVI_read_audio_chunk(avi, NULL);
if (size > 0) {
audio_chunk = (unsigned char *)safemalloc(size);
debug_enter("AVI_read_audio");
nread = AVI_read_audio(avi, (char *)chunk, size);
nread = AVI_read_audio_chunk(avi, (char *)audio_chunk);
debug_leave("AVI_read_audio");
if (nread > 0) {
if (nread >= size)
need_more_data = true;
memory_c mem(chunk, nread, false);
memory_c mem(audio_chunk, nread, true);
PTZR(demuxer->ptzr)->process(mem);
} else
safefree(audio_chunk);
}
#endif
@ -778,6 +815,9 @@ avi_reader_c::identify() {
case 0x2000:
type = "AC3";
break;
case 0x00ff:
type = "AAC";
break;
default:
type = "unknown";
}
@ -799,6 +839,9 @@ avi_reader_c::identify() {
case 0x2000:
type = "AC3";
break;
case 0x00ff:
type = "AAC";
break;
default:
type = "unknown";
}