Libav 0.7.1
libavformat/isom.c
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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 Libav.
00008  *
00009  * Libav 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  * Libav 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 Libav; 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_NONE, 0 },
00217 };
00218 
00219 const AVCodecTag codec_movaudio_tags[] = {
00220     { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
00221     { CODEC_ID_PCM_S32LE, MKTAG('i', 'n', '3', '2') },
00222     { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
00223     { CODEC_ID_PCM_S24LE, MKTAG('i', 'n', '2', '4') },
00224     { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
00225     { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
00226     { CODEC_ID_PCM_S16LE, MKTAG('l', 'p', 'c', 'm') },
00227     { CODEC_ID_PCM_F32BE, MKTAG('f', 'l', '3', '2') },
00228     { CODEC_ID_PCM_F32LE, MKTAG('f', 'l', '3', '2') },
00229     { CODEC_ID_PCM_F64BE, MKTAG('f', 'l', '6', '4') },
00230     { CODEC_ID_PCM_F64LE, MKTAG('f', 'l', '6', '4') },
00231     { CODEC_ID_PCM_S8,    MKTAG('s', 'o', 'w', 't') },
00232     { CODEC_ID_PCM_U8,    MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
00233     { CODEC_ID_PCM_U8,    MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */
00234     { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
00235     { CODEC_ID_PCM_ALAW,  MKTAG('a', 'l', 'a', 'w') }, /*  */
00236 
00237     { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
00238 
00239     { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
00240     { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
00241 
00242     { CODEC_ID_MP1, MKTAG('.', 'm', 'p', '1') }, /* MPEG layer 1 */
00243     { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '2') }, /* MPEG layer 2 */
00244 
00245     { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
00246     { CODEC_ID_MP3, 0x6D730055 }, /* MPEG layer 3 */
00247 
00248 /*  { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
00249 
00250     { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
00251     { CODEC_ID_AC3, MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
00252     { CODEC_ID_AC3, MKTAG('s', 'a', 'c', '3') }, /* Nero Recode */
00253     { CODEC_ID_DTS, MKTAG('d', 't', 's', 'c') }, /* mp4ra.org */
00254     { CODEC_ID_DTS, MKTAG('D', 'T', 'S', ' ') }, /* non-standard */
00255 
00256     { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
00257     { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
00258 
00259     { CODEC_ID_GSM,  MKTAG('a', 'g', 's', 'm') },
00260     { CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
00261 
00262     { CODEC_ID_QCELP, MKTAG('Q','c','l','p') },
00263     { CODEC_ID_QCELP, MKTAG('Q','c','l','q') },
00264     { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */
00265 
00266     { CODEC_ID_QDMC, MKTAG('Q', 'D', 'M', 'C') }, /* QDMC */
00267     { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
00268 
00269     { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },
00270     { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') },
00271 
00272     { CODEC_ID_WMAV2, MKTAG('W', 'M', 'A', '2') },
00273 
00274     { CODEC_ID_NONE, 0 },
00275 };
00276 
00277 const AVCodecTag ff_codec_movsubtitle_tags[] = {
00278     { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
00279     { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
00280     { CODEC_ID_NONE, 0 },
00281 };
00282 
00283 /* map numeric codes from mdhd atom to ISO 639 */
00284 /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
00285 /* http://developer.apple.com/documentation/mac/Text/Text-368.html */
00286 /* deprecated by putting the code as 3*5bit ascii */
00287 static const char mov_mdhd_language_map[][4] = {
00288     /* 0-9 */
00289     "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
00290     "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
00291     "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav",    "",
00292     "fo ",    "", "rus", "chi",    "", "iri", "alb", "ron", "ces", "slk",
00293     "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
00294     /*?*/
00295     "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon",    "", "pus",
00296     "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
00297     "pa ", "ori", "mal", "kan", "tam", "tel",    "", "bur", "khm", "lao",
00298     /*                   roman? arabic? */
00299     "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
00300     /*==rundi?*/
00301        "", "run",    "", "mlg", "epo",    "",    "",    "",    "",    "",
00302     /* 100 */
00303        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00304        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00305        "",    "",    "",    "",    "",    "",    "",    "", "wel", "baq",
00306     "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
00307 };
00308 
00309 int ff_mov_iso639_to_lang(const char lang[4], int mp4)
00310 {
00311     int i, code = 0;
00312 
00313     /* old way, only for QT? */
00314     for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
00315         if (!strcmp(lang, mov_mdhd_language_map[i]))
00316             return i;
00317     }
00318     /* XXX:can we do that in mov too? */
00319     if (!mp4)
00320         return -1;
00321     /* handle undefined as such */
00322     if (lang[0] == '\0')
00323         lang = "und";
00324     /* 5bit ascii */
00325     for (i = 0; i < 3; i++) {
00326         uint8_t c = lang[i];
00327         c -= 0x60;
00328         if (c > 0x1f)
00329             return -1;
00330         code <<= 5;
00331         code |= c;
00332     }
00333     return code;
00334 }
00335 
00336 int ff_mov_lang_to_iso639(unsigned code, char to[4])
00337 {
00338     int i;
00339     memset(to, 0, 4);
00340     /* is it the mangled iso code? */
00341     /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
00342     if (code > 138) {
00343         for (i = 2; i >= 0; i--) {
00344             to[i] = 0x60 + (code & 0x1f);
00345             code >>= 5;
00346         }
00347         return 1;
00348     }
00349     /* old fashion apple lang code */
00350     if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
00351         return 0;
00352     if (!mov_mdhd_language_map[code][0])
00353         return 0;
00354     memcpy(to, mov_mdhd_language_map[code], 4);
00355     return 1;
00356 }
00357 
00358 int ff_mp4_read_descr_len(AVIOContext *pb)
00359 {
00360     int len = 0;
00361     int count = 4;
00362     while (count--) {
00363         int c = avio_r8(pb);
00364         len = (len << 7) | (c & 0x7f);
00365         if (!(c & 0x80))
00366             break;
00367     }
00368     return len;
00369 }
00370 
00371 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
00372 {
00373     int len;
00374     *tag = avio_r8(pb);
00375     len = ff_mp4_read_descr_len(pb);
00376     av_dlog(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
00377     return len;
00378 }
00379 
00380 static const AVCodecTag mp4_audio_types[] = {
00381     { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
00382     { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
00383     { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
00384     { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
00385     { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
00386     { CODEC_ID_NONE,   AOT_NULL },
00387 };
00388 
00389 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
00390 {
00391     int len, tag;
00392     int object_type_id = avio_r8(pb);
00393     avio_r8(pb); /* stream type */
00394     avio_rb24(pb); /* buffer size db */
00395     avio_rb32(pb); /* max bitrate */
00396     avio_rb32(pb); /* avg bitrate */
00397 
00398     st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
00399     av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
00400     len = ff_mp4_read_descr(fc, pb, &tag);
00401     if (tag == MP4DecSpecificDescrTag) {
00402         av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
00403         if (!len || (uint64_t)len > (1<<30))
00404             return -1;
00405         av_free(st->codec->extradata);
00406         st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
00407         if (!st->codec->extradata)
00408             return AVERROR(ENOMEM);
00409         avio_read(pb, st->codec->extradata, len);
00410         st->codec->extradata_size = len;
00411         if (st->codec->codec_id == CODEC_ID_AAC) {
00412             MPEG4AudioConfig cfg;
00413             ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
00414                                      st->codec->extradata_size);
00415             st->codec->channels = cfg.channels;
00416             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
00417                 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
00418             else if (cfg.ext_sample_rate)
00419                 st->codec->sample_rate = cfg.ext_sample_rate;
00420             else
00421                 st->codec->sample_rate = cfg.sample_rate;
00422             av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
00423                     "sample rate %d ext sample rate %d\n", st->codec->channels,
00424                     cfg.object_type, cfg.ext_object_type,
00425                     cfg.sample_rate, cfg.ext_sample_rate);
00426             if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
00427                                                         cfg.object_type)))
00428                 st->codec->codec_id = CODEC_ID_AAC;
00429         }
00430     }
00431     return 0;
00432 }