mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-16 12:24:52 +00:00
a11c2a2c66
fixes audio decoding of T000A11C.AVI Originally committed as revision 9831 to svn://svn.ffmpeg.org/ffmpeg/trunk
443 lines
17 KiB
C
443 lines
17 KiB
C
/*
|
|
* RIFF codec tags
|
|
* Copyright (c) 2000 Fabrice Bellard.
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "avcodec.h"
|
|
#include "riff.h"
|
|
#include "allformats.h" // for asf_muxer
|
|
|
|
/* Note: when encoding, the first matching tag is used, so order is
|
|
important if multiple tags possible for a given codec. */
|
|
const AVCodecTag codec_bmp_tags[] = {
|
|
{ CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
|
|
{ CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
|
|
{ CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
|
|
{ CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
|
|
{ CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
|
|
{ CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
|
|
|
|
{ CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
|
|
{ CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
|
|
{ CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
|
|
{ CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
|
|
|
|
/* added based on MPlayer */
|
|
{ CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
|
|
{ CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
|
|
|
|
{ CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
|
|
{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
|
|
{ CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
|
|
{ CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
|
|
{ CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
|
|
{ CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
|
|
{ CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
|
|
|
|
/* added based on MPlayer */
|
|
{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
|
|
{ CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
|
|
{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
|
|
{ CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
|
|
{ CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
|
|
{ CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
|
|
|
|
{ CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
|
|
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
|
|
|
|
/* added based on MPlayer */
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
|
|
{ CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
|
|
|
|
{ CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
|
|
|
|
/* added based on MPlayer */
|
|
{ CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
|
|
|
|
{ CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
|
|
|
|
{ CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
|
|
|
|
/* added based on MPlayer */
|
|
{ CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
|
|
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
|
|
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
|
|
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
|
|
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
|
|
{ CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
|
|
{ CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
|
|
{ CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
|
|
{ CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
|
|
{ CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
|
|
{ CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
|
|
{ CODEC_ID_MPEG1VIDEO, 0x10000001 },
|
|
{ CODEC_ID_MPEG2VIDEO, 0x10000002 },
|
|
{ CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
|
|
{ CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
|
|
{ CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
|
|
{ CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
|
|
{ CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
|
|
{ CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
|
|
{ CODEC_ID_JPEGLS,MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
|
|
{ CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
|
|
{ CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
|
|
{ CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
|
|
{ CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
|
|
{ CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
|
|
{ CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
|
|
{ CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
|
|
{ CODEC_ID_RAWVIDEO, 0 },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
|
|
{ CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
|
|
{ CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
|
|
{ CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
|
|
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
|
|
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
|
|
{ CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
|
|
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
|
|
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
|
|
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
|
|
{ CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
|
|
{ CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
|
|
{ CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
|
|
{ CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
|
|
{ CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
|
|
{ CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
|
|
{ CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
|
|
{ CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
|
|
{ CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
|
|
{ CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
|
|
{ CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
|
|
{ CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
|
|
{ CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
|
|
{ CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
|
|
{ CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
|
|
{ CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
|
|
{ CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
|
|
{ CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
|
|
{ CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
|
|
{ CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
|
|
{ CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
|
|
{ CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
|
|
{ CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
|
|
{ CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
|
|
{ CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
|
|
{ CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
|
|
{ CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
|
|
{ CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
|
|
{ CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
|
|
{ CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
|
|
{ CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
|
|
{ CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
|
|
{ CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
|
|
{ CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
|
|
{ CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
|
|
{ CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
|
|
{ CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
|
|
{ CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
|
|
{ CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
|
|
{ CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
|
|
{ CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
|
|
{ CODEC_ID_NONE, 0 },
|
|
};
|
|
|
|
const AVCodecTag codec_wav_tags[] = {
|
|
{ CODEC_ID_MP2, 0x50 },
|
|
{ CODEC_ID_MP3, 0x55 },
|
|
{ CODEC_ID_AC3, 0x2000 },
|
|
{ CODEC_ID_DTS, 0x2001 },
|
|
{ CODEC_ID_PCM_S16LE, 0x01 },
|
|
{ CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
|
|
{ CODEC_ID_PCM_S24LE, 0x01 },
|
|
{ CODEC_ID_PCM_S32LE, 0x01 },
|
|
{ CODEC_ID_PCM_ALAW, 0x06 },
|
|
{ CODEC_ID_PCM_MULAW, 0x07 },
|
|
{ CODEC_ID_ADPCM_MS, 0x02 },
|
|
{ CODEC_ID_ADPCM_IMA_WAV, 0x11 },
|
|
{ CODEC_ID_ADPCM_YAMAHA, 0x20 },
|
|
{ CODEC_ID_ADPCM_G726, 0x45 },
|
|
{ CODEC_ID_ADPCM_IMA_DK4, 0x61 }, /* rogue format number */
|
|
{ CODEC_ID_ADPCM_IMA_DK3, 0x62 }, /* rogue format number */
|
|
{ CODEC_ID_WMAV1, 0x160 },
|
|
{ CODEC_ID_WMAV2, 0x161 },
|
|
{ CODEC_ID_AAC, 0x706d },
|
|
{ CODEC_ID_AAC, 0xff },
|
|
{ CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
|
|
{ CODEC_ID_SONIC, 0x2048 },
|
|
{ CODEC_ID_SONIC_LS, 0x2048 },
|
|
{ CODEC_ID_ADPCM_CT, 0x200 },
|
|
{ CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
|
|
{ CODEC_ID_TRUESPEECH, 0x22 },
|
|
{ CODEC_ID_FLAC, 0xF1AC },
|
|
{ CODEC_ID_IMC, 0x401 },
|
|
{ CODEC_ID_GSM_MS, 0x31 },
|
|
{ CODEC_ID_ATRAC3, 0x270 },
|
|
{ CODEC_ID_VOXWARE, 0x75 },
|
|
|
|
/* FIXME: All of the IDs below are not 16 bit and thus illegal. */
|
|
// for NuppelVideo (nuv.c)
|
|
{ CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
|
|
{ CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
|
|
{ CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
|
|
{ 0, 0 },
|
|
};
|
|
|
|
#ifdef CONFIG_MUXERS
|
|
offset_t start_tag(ByteIOContext *pb, const char *tag)
|
|
{
|
|
put_tag(pb, tag);
|
|
put_le32(pb, 0);
|
|
return url_ftell(pb);
|
|
}
|
|
|
|
void end_tag(ByteIOContext *pb, offset_t start)
|
|
{
|
|
offset_t pos;
|
|
|
|
pos = url_ftell(pb);
|
|
url_fseek(pb, start - 4, SEEK_SET);
|
|
put_le32(pb, (uint32_t)(pos - start));
|
|
url_fseek(pb, pos, SEEK_SET);
|
|
}
|
|
|
|
/* WAVEFORMATEX header */
|
|
/* returns the size or -1 on error */
|
|
int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
|
|
{
|
|
int bps, blkalign, bytespersec;
|
|
int hdrsize = 18;
|
|
|
|
if(!enc->codec_tag || enc->codec_tag > 0xffff)
|
|
return -1;
|
|
|
|
put_le16(pb, enc->codec_tag);
|
|
put_le16(pb, enc->channels);
|
|
put_le32(pb, enc->sample_rate);
|
|
if (enc->codec_id == CODEC_ID_PCM_U8 ||
|
|
enc->codec_id == CODEC_ID_PCM_ALAW ||
|
|
enc->codec_id == CODEC_ID_PCM_MULAW) {
|
|
bps = 8;
|
|
} else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
|
|
bps = 0;
|
|
} else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
|
|
bps = 4;
|
|
} else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
|
|
bps = 24;
|
|
} else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
|
|
bps = 32;
|
|
} else {
|
|
bps = 16;
|
|
}
|
|
if(bps != enc->bits_per_sample && enc->bits_per_sample){
|
|
av_log(enc, AV_LOG_WARNING, "requested bits_per_sample (%d) and actually stored (%d) differ\n", enc->bits_per_sample, bps);
|
|
}
|
|
|
|
if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
|
|
blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
|
|
//blkalign = 144 * enc->bit_rate/enc->sample_rate;
|
|
} else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
|
|
blkalign = 1;
|
|
} else if (enc->block_align != 0) { /* specified by the codec */
|
|
blkalign = enc->block_align;
|
|
} else
|
|
blkalign = enc->channels*bps >> 3;
|
|
if (enc->codec_id == CODEC_ID_PCM_U8 ||
|
|
enc->codec_id == CODEC_ID_PCM_S24LE ||
|
|
enc->codec_id == CODEC_ID_PCM_S32LE ||
|
|
enc->codec_id == CODEC_ID_PCM_S16LE) {
|
|
bytespersec = enc->sample_rate * blkalign;
|
|
} else {
|
|
bytespersec = enc->bit_rate / 8;
|
|
}
|
|
put_le32(pb, bytespersec); /* bytes per second */
|
|
put_le16(pb, blkalign); /* block align */
|
|
put_le16(pb, bps); /* bits per sample */
|
|
if (enc->codec_id == CODEC_ID_MP3) {
|
|
put_le16(pb, 12); /* wav_extra_size */
|
|
hdrsize += 12;
|
|
put_le16(pb, 1); /* wID */
|
|
put_le32(pb, 2); /* fdwFlags */
|
|
put_le16(pb, 1152); /* nBlockSize */
|
|
put_le16(pb, 1); /* nFramesPerBlock */
|
|
put_le16(pb, 1393); /* nCodecDelay */
|
|
} else if (enc->codec_id == CODEC_ID_MP2) {
|
|
put_le16(pb, 22); /* wav_extra_size */
|
|
hdrsize += 22;
|
|
put_le16(pb, 2); /* fwHeadLayer */
|
|
put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
|
|
put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
|
|
put_le16(pb, 0); /* fwHeadModeExt */
|
|
put_le16(pb, 1); /* wHeadEmphasis */
|
|
put_le16(pb, 16); /* fwHeadFlags */
|
|
put_le32(pb, 0); /* dwPTSLow */
|
|
put_le32(pb, 0); /* dwPTSHigh */
|
|
} else if (enc->codec_id == CODEC_ID_GSM_MS) {
|
|
put_le16(pb, 2); /* wav_extra_size */
|
|
hdrsize += 2;
|
|
put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
|
|
} else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
|
|
put_le16(pb, 2); /* wav_extra_size */
|
|
hdrsize += 2;
|
|
put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
|
|
} else if(enc->extradata_size){
|
|
put_le16(pb, enc->extradata_size);
|
|
put_buffer(pb, enc->extradata, enc->extradata_size);
|
|
hdrsize += enc->extradata_size;
|
|
if(hdrsize&1){
|
|
hdrsize++;
|
|
put_byte(pb, 0);
|
|
}
|
|
} else {
|
|
hdrsize -= 2;
|
|
}
|
|
|
|
return hdrsize;
|
|
}
|
|
|
|
/* BITMAPINFOHEADER header */
|
|
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
|
|
{
|
|
put_le32(pb, 40 + enc->extradata_size); /* size */
|
|
put_le32(pb, enc->width);
|
|
put_le32(pb, enc->height);
|
|
put_le16(pb, 1); /* planes */
|
|
|
|
put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
|
|
/* compression type */
|
|
put_le32(pb, enc->codec_tag);
|
|
put_le32(pb, enc->width * enc->height * 3);
|
|
put_le32(pb, 0);
|
|
put_le32(pb, 0);
|
|
put_le32(pb, 0);
|
|
put_le32(pb, 0);
|
|
|
|
put_buffer(pb, enc->extradata, enc->extradata_size);
|
|
|
|
if (enc->extradata_size & 1)
|
|
put_byte(pb, 0);
|
|
}
|
|
#endif //CONFIG_MUXERS
|
|
|
|
#ifdef CONFIG_DEMUXERS
|
|
/* We could be given one of the three possible structures here:
|
|
* WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
|
|
* is an expansion of the previous one with the fields added
|
|
* at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
|
|
* WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
|
|
* an openended structure.
|
|
*/
|
|
void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
|
|
{
|
|
int id;
|
|
|
|
id = get_le16(pb);
|
|
codec->codec_type = CODEC_TYPE_AUDIO;
|
|
codec->codec_tag = id;
|
|
codec->channels = get_le16(pb);
|
|
codec->sample_rate = get_le32(pb);
|
|
codec->bit_rate = get_le32(pb) * 8;
|
|
codec->block_align = get_le16(pb);
|
|
if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
|
|
codec->bits_per_sample = 8;
|
|
}else
|
|
codec->bits_per_sample = get_le16(pb);
|
|
if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
|
|
int cbSize = get_le16(pb); /* cbSize */
|
|
size -= 18;
|
|
cbSize = FFMIN(size, cbSize);
|
|
if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
|
|
codec->bits_per_sample = get_le16(pb);
|
|
get_le32(pb); /* dwChannelMask */
|
|
id = get_le32(pb); /* 4 first bytes of GUID */
|
|
url_fskip(pb, 12); /* skip end of GUID */
|
|
cbSize -= 22;
|
|
size -= 22;
|
|
}
|
|
codec->extradata_size = cbSize;
|
|
if (cbSize > 0) {
|
|
codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
get_buffer(pb, codec->extradata, codec->extradata_size);
|
|
size -= cbSize;
|
|
}
|
|
|
|
/* It is possible for the chunk to contain garbage at the end */
|
|
if (size > 0)
|
|
url_fskip(pb, size);
|
|
}
|
|
codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
|
|
}
|
|
|
|
|
|
int wav_codec_get_id(unsigned int tag, int bps)
|
|
{
|
|
int id;
|
|
id = codec_get_id(codec_wav_tags, tag);
|
|
if (id <= 0)
|
|
return id;
|
|
/* handle specific u8 codec */
|
|
if (id == CODEC_ID_PCM_S16LE && bps == 8)
|
|
id = CODEC_ID_PCM_U8;
|
|
if (id == CODEC_ID_PCM_S16LE && bps == 24)
|
|
id = CODEC_ID_PCM_S24LE;
|
|
if (id == CODEC_ID_PCM_S16LE && bps == 32)
|
|
id = CODEC_ID_PCM_S32LE;
|
|
if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
|
|
id = CODEC_ID_PCM_ZORK;
|
|
return id;
|
|
}
|
|
#endif // CONFIG_DEMUXERS
|
|
|
|
void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
|
|
{
|
|
int gcd;
|
|
|
|
*au_ssize= stream->block_align;
|
|
if(stream->frame_size && stream->sample_rate){
|
|
*au_scale=stream->frame_size;
|
|
*au_rate= stream->sample_rate;
|
|
}else if(stream->codec_type == CODEC_TYPE_VIDEO){
|
|
*au_scale= stream->time_base.num;
|
|
*au_rate = stream->time_base.den;
|
|
}else{
|
|
*au_scale= stream->block_align ? stream->block_align*8 : 8;
|
|
*au_rate = stream->bit_rate;
|
|
}
|
|
gcd= ff_gcd(*au_scale, *au_rate);
|
|
*au_scale /= gcd;
|
|
*au_rate /= gcd;
|
|
}
|