FFmpeg: libavformat/isom.c Source File

00001 /*
00002  * ISO Media common code
00003  * Copyright (c) 2001 Fabrice Bellard
00004  * Copyright (c) 2002 Francois Revol <revol@free.fr>
00005  * Copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
00006  *
00007  * This file is part of FFmpeg.
00008  *
00009  * FFmpeg is free software; you can redistribute it and/or
00010  * modify it under the terms of the GNU Lesser General Public
00011  * License as published by the Free Software Foundation; either
00012  * version 2.1 of the License, or (at your option) any later version.
00013  *
00014  * FFmpeg is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017  * Lesser General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU Lesser General Public
00020  * License along with FFmpeg; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00022  */
00023 
00024 //#define DEBUG
00025 
00026 #include "avformat.h"
00027 #include "internal.h"
00028 #include "isom.h"
00029 #include "riff.h"
00030 #include "libavcodec/mpeg4audio.h"
00031 #include "libavcodec/mpegaudiodata.h"
00032 
00033 /* http://www.mp4ra.org */
00034 /* ordered by muxing preference */
00035 const AVCodecTag ff_mp4_obj_type[] = {
00036     { CODEC_ID_MOV_TEXT  , 0x08 },
00037     { CODEC_ID_MPEG4     , 0x20 },
00038     { CODEC_ID_H264      , 0x21 },
00039     { CODEC_ID_AAC       , 0x40 },
00040     { CODEC_ID_MP4ALS    , 0x40 }, /* 14496-3 ALS */
00041     { CODEC_ID_MPEG2VIDEO, 0x61 }, /* MPEG2 Main */
00042     { CODEC_ID_MPEG2VIDEO, 0x60 }, /* MPEG2 Simple */
00043     { CODEC_ID_MPEG2VIDEO, 0x62 }, /* MPEG2 SNR */
00044     { CODEC_ID_MPEG2VIDEO, 0x63 }, /* MPEG2 Spatial */
00045     { CODEC_ID_MPEG2VIDEO, 0x64 }, /* MPEG2 High */
00046     { CODEC_ID_MPEG2VIDEO, 0x65 }, /* MPEG2 422 */
00047     { CODEC_ID_AAC       , 0x66 }, /* MPEG2 AAC Main */
00048     { CODEC_ID_AAC       , 0x67 }, /* MPEG2 AAC Low */
00049     { CODEC_ID_AAC       , 0x68 }, /* MPEG2 AAC SSR */
00050     { CODEC_ID_MP3       , 0x69 }, /* 13818-3 */
00051     { CODEC_ID_MP2       , 0x69 }, /* 11172-3 */
00052     { CODEC_ID_MPEG1VIDEO, 0x6A }, /* 11172-2 */
00053     { CODEC_ID_MP3       , 0x6B }, /* 11172-3 */
00054     { CODEC_ID_MJPEG     , 0x6C }, /* 10918-1 */
00055     { CODEC_ID_PNG       , 0x6D },
00056     { CODEC_ID_JPEG2000  , 0x6E }, /* 15444-1 */
00057     { CODEC_ID_VC1       , 0xA3 },
00058     { CODEC_ID_DIRAC     , 0xA4 },
00059     { CODEC_ID_AC3       , 0xA5 },
00060     { CODEC_ID_DTS       , 0xA9 }, /* mp4ra.org */
00061     { CODEC_ID_VORBIS    , 0xDD }, /* non standard, gpac uses it */
00062     { CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* non standard, see unsupported-embedded-subs-2.mp4 */
00063     { CODEC_ID_QCELP     , 0xE1 },
00064     { CODEC_ID_NONE      ,    0 },
00065 };
00066 
00067 const AVCodecTag codec_movvideo_tags[] = {
00068 /*  { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
00069 
00070     { CODEC_ID_RAWVIDEO, MKTAG('r', 'a', 'w', ' ') }, /* Uncompressed RGB */
00071     { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') }, /* Uncompressed YUV422 */
00072     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, /* YUV with alpha-channel (AVID Uncompressed) */
00073     { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
00074     { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') }, /* same as 2vuy but byte swapped */
00075 
00076     { CODEC_ID_RAWVIDEO, MKTAG('L', '5', '5', '5') },
00077     { CODEC_ID_RAWVIDEO, MKTAG('L', '5', '6', '5') },
00078     { CODEC_ID_RAWVIDEO, MKTAG('B', '5', '6', '5') },
00079     { CODEC_ID_RAWVIDEO, MKTAG('2', '4', 'B', 'G') },
00080     { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 'A') },
00081     { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 'A') },
00082     { CODEC_ID_RAWVIDEO, MKTAG('A', 'B', 'G', 'R') },
00083     { CODEC_ID_RAWVIDEO, MKTAG('b', '1', '6', 'g') },
00084     { CODEC_ID_RAWVIDEO, MKTAG('b', '4', '8', 'r') },
00085     { CODEC_ID_RAWVIDEO, MKTAG('D', 'V', 'O', 'O') }, /* Digital Voodoo SD 8 Bit */
00086 
00087     { CODEC_ID_R10K,   MKTAG('R', '1', '0', 'k') }, /* UNCOMPRESSED 10BIT RGB */
00088     { CODEC_ID_R10K,   MKTAG('R', '1', '0', 'g') }, /* UNCOMPRESSED 10BIT RGB */
00089     { CODEC_ID_R210,   MKTAG('r', '2', '1', '0') }, /* UNCOMPRESSED 10BIT RGB */
00090     { CODEC_ID_V210,   MKTAG('v', '2', '1', '0') }, /* UNCOMPRESSED 10BIT 4:2:2 */
00091 
00092     { CODEC_ID_MJPEG,  MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
00093     { CODEC_ID_MJPEG,  MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
00094     { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
00095 /*  { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
00096     { CODEC_ID_MJPEG,  MKTAG('d', 'm', 'b', '1') }, /* Motion JPEG OpenDML */
00097     { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
00098 
00099     { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
00100     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
00101     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
00102     { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
00103 
00104     { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
00105     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
00106     { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
00107     { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
00108 
00109     { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
00110     { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
00111 
00112     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
00113     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
00114     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
00115     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
00116     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
00117     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
00118     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', '1') }, /* AVID DV100 */
00119     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'q') }, /* DVCPRO HD 720p50 */
00120     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'p') }, /* DVCPRO HD 720p60 */
00121     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
00122     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '2') },
00123     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '4') },
00124     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
00125     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
00126     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '3') }, /* DVCPRO HD 30p produced by FCP */
00127 
00128     { CODEC_ID_VP3,     MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
00129     { CODEC_ID_RPZA,    MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
00130     { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
00131     { CODEC_ID_8BPS,    MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
00132     { CODEC_ID_SMC,     MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
00133     { CODEC_ID_QTRLE,   MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
00134     { CODEC_ID_MSRLE,   MKTAG('W', 'R', 'L', 'E') },
00135     { CODEC_ID_QDRAW,   MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
00136 
00137     { CODEC_ID_RAWVIDEO, MKTAG('W', 'R', 'A', 'W') },
00138 
00139     { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
00140     { CODEC_ID_H264, MKTAG('a', 'i', '5', '5') }, /* AVC Intra  50 / 1080 interlace */
00141     { CODEC_ID_H264, MKTAG('a', 'i', '5', 'q') }, /* AVC Intra  50 /  720 */
00142     { CODEC_ID_H264, MKTAG('a', 'i', '1', '5') }, /* AVC Intra 100 / 1080 interlace */
00143     { CODEC_ID_H264, MKTAG('a', 'i', '1', 'q') }, /* AVC Intra 100 /  720 */
00144     { CODEC_ID_H264, MKTAG('a', 'i', '1', '2') }, /* AVC Intra 100 / 1080 */
00145 
00146     { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, /* Apple MPEG-1 Camcorder */
00147     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
00148     { CODEC_ID_MPEG2VIDEO, MKTAG('m', '2', 'v', '1') }, /* Apple MPEG-2 Camcorder */
00149     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */
00150     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */
00151     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* MPEG2 HDV 1080i50 */
00152     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '4') }, /* MPEG2 HDV 720p24 */
00153     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '5') }, /* MPEG2 HDV 720p25 */
00154     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '6') }, /* MPEG2 HDV 1080p24 */
00155     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '7') }, /* MPEG2 HDV 1080p25 */
00156     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '8') }, /* MPEG2 HDV 1080p30 */
00157     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '9') }, /* MPEG2 HDV 720p60 JVC */
00158     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', 'a') }, /* MPEG2 HDV 720p50 */
00159     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
00160     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
00161     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'n') }, /* MPEG2 IMX NTSC 525/60 40mb/s produced by FCP */
00162     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */
00163     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
00164     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
00165     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '4') }, /* XDCAM HD422 720p24 CBR */
00166     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '5') }, /* XDCAM HD422 720p25 CBR */
00167     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */
00168     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'a') }, /* XDCAM HD422 720p50 CBR */
00169     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'b') }, /* XDCAM HD422 1080i60 CBR */
00170     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'c') }, /* XDCAM HD422 1080i50 CBR */
00171     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'd') }, /* XDCAM HD422 1080p24 CBR */
00172     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'e') }, /* XDCAM HD422 1080p25 CBR */
00173     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'f') }, /* XDCAM HD422 1080p30 CBR */
00174     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '1') }, /* XDCAM EX 720p30 VBR */
00175     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '2') }, /* XDCAM HD 1080i60 */
00176     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '3') }, /* XDCAM HD 1080i50 VBR */
00177     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '4') }, /* XDCAM EX 720p24 VBR */
00178     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '5') }, /* XDCAM EX 720p25 VBR */
00179     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '6') }, /* XDCAM HD 1080p24 VBR */
00180     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '7') }, /* XDCAM HD 1080p25 VBR */
00181     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '8') }, /* XDCAM HD 1080p30 VBR */
00182     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '9') }, /* XDCAM EX 720p60 VBR */
00183     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'a') }, /* XDCAM EX 720p50 VBR */
00184     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'b') }, /* XDCAM EX 1080i60 VBR */
00185     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'c') }, /* XDCAM EX 1080i50 VBR */
00186     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'd') }, /* XDCAM EX 1080p24 VBR */
00187     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'e') }, /* XDCAM EX 1080p25 VBR */
00188     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'f') }, /* XDCAM EX 1080p30 VBR */
00189     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', 'd') }, /* XDCAM HD 540p */
00190     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', '2') }, /* XDCAM HD422 540p */
00191     { CODEC_ID_MPEG2VIDEO, MKTAG('A', 'V', 'm', 'p') }, /* AVID IMX PAL */
00192 
00193     { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
00194 
00195     { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */
00196     { CODEC_ID_TIFF,  MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */
00197     { CODEC_ID_GIF,   MKTAG('g', 'i', 'f', ' ') }, /* embedded gif files as frames (usually one "click to play movie" frame) */
00198     { CODEC_ID_PNG,   MKTAG('p', 'n', 'g', ' ') },
00199 
00200     { CODEC_ID_VC1, MKTAG('v', 'c', '-', '1') }, /* SMPTE RP 2025 */
00201     { CODEC_ID_CAVS, MKTAG('a', 'v', 's', '2') },
00202 
00203     { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
00204     { CODEC_ID_DNXHD, MKTAG('A', 'V', 'd', 'n') }, /* AVID DNxHD */
00205     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', '1', 'x') }, /* AVID 1:1x */
00206     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'u', 'p') },
00207     { CODEC_ID_SGI,   MKTAG('s', 'g', 'i', ' ') }, /* SGI  */
00208     { CODEC_ID_DPX,   MKTAG('d', 'p', 'x', ' ') }, /* DPX */
00209 
00210     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'h') }, /* Apple ProRes 422 High Quality */
00211     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'n') }, /* Apple ProRes 422 Standard Definition */
00212     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 's') }, /* Apple ProRes 422 LT */
00213     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'o') }, /* Apple ProRes 422 Proxy */
00214     { CODEC_ID_PRORES, MKTAG('a', 'p', '4', 'h') }, /* Apple ProRes 4444 */
00215 
00216     { CODEC_ID_MSMPEG4V3, MKTAG('3', 'I', 'V', 'D') }, /* 3ivx DivX Doctor */
00217 
00218     { CODEC_ID_NONE, 0 },
00219 };
00220 
00221 const AVCodecTag codec_movaudio_tags[] = {
00222     { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
00223     { CODEC_ID_PCM_S32LE, MKTAG('i', 'n', '3', '2') },
00224     { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
00225     { CODEC_ID_PCM_S24LE, MKTAG('i', 'n', '2', '4') },
00226     { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
00227     { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
00228     { CODEC_ID_PCM_S16LE, MKTAG('l', 'p', 'c', 'm') },
00229     { CODEC_ID_PCM_F32BE, MKTAG('f', 'l', '3', '2') },
00230     { CODEC_ID_PCM_F32LE, MKTAG('f', 'l', '3', '2') },
00231     { CODEC_ID_PCM_F64BE, MKTAG('f', 'l', '6', '4') },
00232     { CODEC_ID_PCM_F64LE, MKTAG('f', 'l', '6', '4') },
00233     { CODEC_ID_PCM_S8,    MKTAG('s', 'o', 'w', 't') },
00234     { CODEC_ID_PCM_U8,    MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
00235     { CODEC_ID_PCM_U8,    MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */
00236     { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
00237     { CODEC_ID_PCM_ALAW,  MKTAG('a', 'l', 'a', 'w') }, /*  */
00238 
00239     { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
00240 
00241     { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
00242     { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
00243 
00244     { CODEC_ID_MP1, MKTAG('.', 'm', 'p', '1') }, /* MPEG layer 1 */
00245     { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '2') }, /* MPEG layer 2 */
00246 
00247     { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
00248     { CODEC_ID_MP3, 0x6D730055 }, /* MPEG layer 3 */
00249 
00250 /*  { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
00251 
00252     { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
00253     { CODEC_ID_AC3, MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
00254     { CODEC_ID_AC3, MKTAG('s', 'a', 'c', '3') }, /* Nero Recode */
00255     { CODEC_ID_DTS, MKTAG('d', 't', 's', 'c') }, /* mp4ra.org */
00256     { CODEC_ID_DTS, MKTAG('D', 'T', 'S', ' ') }, /* non-standard */
00257 
00258     { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
00259     { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
00260 
00261     { CODEC_ID_GSM,  MKTAG('a', 'g', 's', 'm') },
00262     { CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
00263 
00264     { CODEC_ID_QCELP, MKTAG('Q','c','l','p') },
00265     { CODEC_ID_QCELP, MKTAG('Q','c','l','q') },
00266     { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */
00267 
00268     { CODEC_ID_QDMC, MKTAG('Q', 'D', 'M', 'C') }, /* QDMC */
00269     { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
00270 
00271     { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },
00272     { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') },
00273 
00274     { CODEC_ID_WMAV2, MKTAG('W', 'M', 'A', '2') },
00275 
00276     { CODEC_ID_NONE, 0 },
00277 };
00278 
00279 const AVCodecTag ff_codec_movsubtitle_tags[] = {
00280     { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
00281     { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
00282     { CODEC_ID_NONE, 0 },
00283 };
00284 
00285 /* map numeric codes from mdhd atom to ISO 639 */
00286 /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
00287 /* http://developer.apple.com/documentation/mac/Text/Text-368.html */
00288 /* deprecated by putting the code as 3*5bit ascii */
00289 static const char mov_mdhd_language_map[][4] = {
00290     /* 0-9 */
00291     "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
00292     "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
00293     "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav",    "",
00294     "fo ",    "", "rus", "chi",    "", "iri", "alb", "ron", "ces", "slk",
00295     "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
00296     /*?*/
00297     "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon",    "", "pus",
00298     "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
00299     "pa ", "ori", "mal", "kan", "tam", "tel",    "", "bur", "khm", "lao",
00300     /*                   roman? arabic? */
00301     "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
00302     /*==rundi?*/
00303        "", "run",    "", "mlg", "epo",    "",    "",    "",    "",    "",
00304     /* 100 */
00305        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00306        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00307        "",    "",    "",    "",    "",    "",    "",    "", "wel", "baq",
00308     "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
00309 };
00310 
00311 int ff_mov_iso639_to_lang(const char lang[4], int mp4)
00312 {
00313     int i, code = 0;
00314 
00315     /* old way, only for QT? */
00316     for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
00317         if (!strcmp(lang, mov_mdhd_language_map[i]))
00318             return i;
00319     }
00320     /* XXX:can we do that in mov too? */
00321     if (!mp4)
00322         return -1;
00323     /* handle undefined as such */
00324     if (lang[0] == '\0')
00325         lang = "und";
00326     /* 5bit ascii */
00327     for (i = 0; i < 3; i++) {
00328         uint8_t c = lang[i];
00329         c -= 0x60;
00330         if (c > 0x1f)
00331             return -1;
00332         code <<= 5;
00333         code |= c;
00334     }
00335     return code;
00336 }
00337 
00338 int ff_mov_lang_to_iso639(unsigned code, char to[4])
00339 {
00340     int i;
00341     memset(to, 0, 4);
00342     /* is it the mangled iso code? */
00343     /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
00344     if (code > 138) {
00345         for (i = 2; i >= 0; i--) {
00346             to[i] = 0x60 + (code & 0x1f);
00347             code >>= 5;
00348         }
00349         return 1;
00350     }
00351     /* old fashion apple lang code */
00352     if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
00353         return 0;
00354     if (!mov_mdhd_language_map[code][0])
00355         return 0;
00356     memcpy(to, mov_mdhd_language_map[code], 4);
00357     return 1;
00358 }
00359 
00360 int ff_mp4_read_descr_len(AVIOContext *pb)
00361 {
00362     int len = 0;
00363     int count = 4;
00364     while (count--) {
00365         int c = avio_r8(pb);
00366         len = (len << 7) | (c & 0x7f);
00367         if (!(c & 0x80))
00368             break;
00369     }
00370     return len;
00371 }
00372 
00373 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
00374 {
00375     int len;
00376     *tag = avio_r8(pb);
00377     len = ff_mp4_read_descr_len(pb);
00378     av_dlog(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
00379     return len;
00380 }
00381 
00382 static const AVCodecTag mp4_audio_types[] = {
00383     { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
00384     { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
00385     { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
00386     { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
00387     { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
00388     { CODEC_ID_NONE,   AOT_NULL },
00389 };
00390 
00391 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
00392 {
00393     int len, tag;
00394     int object_type_id = avio_r8(pb);
00395     avio_r8(pb); /* stream type */
00396     avio_rb24(pb); /* buffer size db */
00397     avio_rb32(pb); /* max bitrate */
00398     avio_rb32(pb); /* avg bitrate */
00399 
00400     st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
00401     av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
00402     len = ff_mp4_read_descr(fc, pb, &tag);
00403     if (tag == MP4DecSpecificDescrTag) {
00404         av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
00405         if (!len || (uint64_t)len > (1<<30))
00406             return -1;
00407         av_free(st->codec->extradata);
00408         st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
00409         if (!st->codec->extradata)
00410             return AVERROR(ENOMEM);
00411         avio_read(pb, st->codec->extradata, len);
00412         st->codec->extradata_size = len;
00413         if (st->codec->codec_id == CODEC_ID_AAC) {
00414             MPEG4AudioConfig cfg;
00415             ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
00416                                      st->codec->extradata_size);
00417             st->codec->channels = cfg.channels;
00418             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
00419                 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
00420             else if (cfg.ext_sample_rate)
00421                 st->codec->sample_rate = cfg.ext_sample_rate;
00422             else
00423                 st->codec->sample_rate = cfg.sample_rate;
00424             av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
00425                     "sample rate %d ext sample rate %d\n", st->codec->channels,
00426                     cfg.object_type, cfg.ext_object_type,
00427                     cfg.sample_rate, cfg.ext_sample_rate);
00428             if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
00429                                                         cfg.object_type)))
00430                 st->codec->codec_id = CODEC_ID_AAC;
00431         }
00432     }
00433     return 0;
00434 }
00435 
00436 typedef struct MovChannelLayout {
00437     int64_t  channel_layout;
00438     uint32_t layout_tag;
00439 } MovChannelLayout;
00440 
00441 static const MovChannelLayout mov_channel_layout[] = {
00442     { AV_CH_LAYOUT_MONO,                         (100<<16) | 1}, //< kCAFChannelLayoutTag_Mono
00443     { AV_CH_LAYOUT_STEREO,                       (101<<16) | 2}, //< kCAFChannelLayoutTag_Stereo
00444     { AV_CH_LAYOUT_STEREO,                       (102<<16) | 2}, //< kCAFChannelLayoutTag_StereoHeadphones
00445     { AV_CH_LAYOUT_2_1,                          (131<<16) | 3}, //< kCAFChannelLayoutTag_ITU_2_1
00446     { AV_CH_LAYOUT_QUAD,                         (132<<16) | 4}, //< kCAFChannelLayoutTag_ITU_2_2
00447     { AV_CH_LAYOUT_2_2,                          (132<<16) | 4}, //< kCAFChannelLayoutTag_ITU_2_2
00448     { AV_CH_LAYOUT_QUAD,                         (108<<16) | 4}, //< kCAFChannelLayoutTag_Quadraphonic
00449     { AV_CH_LAYOUT_SURROUND,                     (113<<16) | 3}, //< kCAFChannelLayoutTag_MPEG_3_0_A
00450     { AV_CH_LAYOUT_4POINT0,                      (115<<16) | 4}, //< kCAFChannelLayoutTag_MPEG_4_0_A
00451     { AV_CH_LAYOUT_5POINT0_BACK,                 (117<<16) | 5}, //< kCAFChannelLayoutTag_MPEG_5_0_A
00452     { AV_CH_LAYOUT_5POINT0,                      (117<<16) | 5}, //< kCAFChannelLayoutTag_MPEG_5_0_A
00453     { AV_CH_LAYOUT_5POINT1_BACK,                 (121<<16) | 6}, //< kCAFChannelLayoutTag_MPEG_5_1_A
00454     { AV_CH_LAYOUT_5POINT1,                      (121<<16) | 6}, //< kCAFChannelLayoutTag_MPEG_5_1_A
00455     { AV_CH_LAYOUT_7POINT1,                      (128<<16) | 8}, //< kCAFChannelLayoutTag_MPEG_7_1_C
00456     { AV_CH_LAYOUT_7POINT1_WIDE,                 (126<<16) | 8}, //< kCAFChannelLayoutTag_MPEG_7_1_A
00457     { AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, //< kCAFChannelLayoutTag_SMPTE_DTV
00458     { AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,   (133<<16) | 3}, //< kCAFChannelLayoutTag_DVD_4
00459     { AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,      (134<<16) | 4}, //< kCAFChannelLayoutTag_DVD_5
00460     { AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,     (135<<16) | 4}, //< kCAFChannelLayoutTag_DVD_6
00461     { AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,      (135<<16) | 4}, //< kCAFChannelLayoutTag_DVD_6
00462     { AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY, (136<<16) | 4}, //< kCAFChannelLayoutTag_DVD_10
00463     { AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,  (137<<16) | 5}, //< kCAFChannelLayoutTag_DVD_11
00464     { 0, 0},
00465 };
00466 
00467 void ff_mov_read_chan(AVFormatContext *s, int64_t size, AVCodecContext *codec)
00468 {
00469     uint32_t layout_tag;
00470     AVIOContext *pb = s->pb;
00471     const MovChannelLayout *layouts = mov_channel_layout;
00472     layout_tag = avio_rb32(pb);
00473     size -= 4;
00474     if (layout_tag == 0) { //< kCAFChannelLayoutTag_UseChannelDescriptions
00475         // Channel descriptions not implemented
00476         av_log_ask_for_sample(s, "Unimplemented container channel layout.\n");
00477         avio_skip(pb, size);
00478         return;
00479     }
00480     if (layout_tag == 0x10000) { //< kCAFChannelLayoutTag_UseChannelBitmap
00481         codec->channel_layout = avio_rb32(pb);
00482         size -= 4;
00483         avio_skip(pb, size);
00484         return;
00485     }
00486     while (layouts->channel_layout) {
00487         if (layout_tag == layouts->layout_tag) {
00488             codec->channel_layout = layouts->channel_layout;
00489             break;
00490         }
00491         layouts++;
00492     }
00493     if (!codec->channel_layout)
00494         av_log(s, AV_LOG_WARNING, "Unknown container channel layout.\n");
00495     avio_skip(pb, size);
00496 }
00497 
00498 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
00499 {
00500     const MovChannelLayout *layouts;
00501     uint32_t layout_tag = 0;
00502 
00503     for (layouts = mov_channel_layout; layouts->channel_layout; layouts++)
00504         if (channel_layout == layouts->channel_layout) {
00505             layout_tag = layouts->layout_tag;
00506             break;
00507         }
00508 
00509     if (layout_tag) {
00510         avio_wb32(pb, layout_tag); //< mChannelLayoutTag
00511         avio_wb32(pb, 0);          //< mChannelBitmap
00512     } else {
00513         avio_wb32(pb, 0x10000);    //< kCAFChannelLayoutTag_UseChannelBitmap
00514         avio_wb32(pb, channel_layout);
00515     }
00516     avio_wb32(pb, 0);              //< mNumberChannelDescriptions
00517 }
00518