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_MPEG4SYSTEMS, 0x01 },
00065     { CODEC_ID_MPEG4SYSTEMS, 0x02 },
00066     { CODEC_ID_NONE      ,    0 },
00067 };
00068 
00069 const AVCodecTag codec_movvideo_tags[] = {
00070 /*  { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
00071 
00072     { CODEC_ID_RAWVIDEO, MKTAG('r', 'a', 'w', ' ') }, /* Uncompressed RGB */
00073     { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') }, /* Uncompressed YUV422 */
00074     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, /* YUV with alpha-channel (AVID Uncompressed) */
00075     { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
00076     { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') }, /* same as 2vuy but byte swapped */
00077 
00078     { CODEC_ID_RAWVIDEO, MKTAG('L', '5', '5', '5') },
00079     { CODEC_ID_RAWVIDEO, MKTAG('L', '5', '6', '5') },
00080     { CODEC_ID_RAWVIDEO, MKTAG('B', '5', '6', '5') },
00081     { CODEC_ID_RAWVIDEO, MKTAG('2', '4', 'B', 'G') },
00082     { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 'A') },
00083     { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 'A') },
00084     { CODEC_ID_RAWVIDEO, MKTAG('A', 'B', 'G', 'R') },
00085     { CODEC_ID_RAWVIDEO, MKTAG('b', '1', '6', 'g') },
00086     { CODEC_ID_RAWVIDEO, MKTAG('b', '4', '8', 'r') },
00087     { CODEC_ID_RAWVIDEO, MKTAG('D', 'V', 'O', 'O') }, /* Digital Voodoo SD 8 Bit */
00088 
00089     { CODEC_ID_R10K,   MKTAG('R', '1', '0', 'k') }, /* UNCOMPRESSED 10BIT RGB */
00090     { CODEC_ID_R10K,   MKTAG('R', '1', '0', 'g') }, /* UNCOMPRESSED 10BIT RGB */
00091     { CODEC_ID_R210,   MKTAG('r', '2', '1', '0') }, /* UNCOMPRESSED 10BIT RGB */
00092     { CODEC_ID_V210,   MKTAG('v', '2', '1', '0') }, /* UNCOMPRESSED 10BIT 4:2:2 */
00093     { CODEC_ID_V410,   MKTAG('v', '4', '1', '0') }, /* UNCOMPRESSED 10BIT 4:4:4 */
00094 
00095     { CODEC_ID_MJPEG,  MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
00096     { CODEC_ID_MJPEG,  MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
00097     { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
00098 /*  { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
00099     { CODEC_ID_MJPEG,  MKTAG('d', 'm', 'b', '1') }, /* Motion JPEG OpenDML */
00100     { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
00101 
00102     { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
00103     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
00104     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
00105     { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
00106 
00107     { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
00108     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
00109     { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
00110     { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
00111 
00112     { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
00113     { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
00114 
00115     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
00116     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
00117     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
00118     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
00119     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
00120     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
00121     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', '1') }, /* AVID DV100 */
00122     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'q') }, /* DVCPRO HD 720p50 */
00123     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'p') }, /* DVCPRO HD 720p60 */
00124     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
00125     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '2') },
00126     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '4') },
00127     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
00128     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
00129     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '3') }, /* DVCPRO HD 30p produced by FCP */
00130 
00131     { CODEC_ID_VP3,     MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
00132     { CODEC_ID_RPZA,    MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
00133     { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
00134     { CODEC_ID_8BPS,    MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
00135     { CODEC_ID_SMC,     MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
00136     { CODEC_ID_QTRLE,   MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
00137     { CODEC_ID_MSRLE,   MKTAG('W', 'R', 'L', 'E') },
00138     { CODEC_ID_QDRAW,   MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
00139 
00140     { CODEC_ID_RAWVIDEO, MKTAG('W', 'R', 'A', 'W') },
00141 
00142     { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
00143     { CODEC_ID_H264, MKTAG('a', 'i', '5', 'p') }, /* AVC-Intra  50M 720p24/30/60 */
00144     { CODEC_ID_H264, MKTAG('a', 'i', '5', 'q') }, /* AVC-Intra  50M 720p25/50 */
00145     { CODEC_ID_H264, MKTAG('a', 'i', '5', '2') }, /* AVC-Intra  50M 1080p25/50 */
00146     { CODEC_ID_H264, MKTAG('a', 'i', '5', '3') }, /* AVC-Intra  50M 1080p24/30/60 */
00147     { CODEC_ID_H264, MKTAG('a', 'i', '5', '5') }, /* AVC-Intra  50M 1080i50 */
00148     { CODEC_ID_H264, MKTAG('a', 'i', '5', '6') }, /* AVC-Intra  50M 1080i60 */
00149     { CODEC_ID_H264, MKTAG('a', 'i', '1', 'p') }, /* AVC-Intra 100M 720p24/30/60 */
00150     { CODEC_ID_H264, MKTAG('a', 'i', '1', 'q') }, /* AVC-Intra 100M 720p25/50 */
00151     { CODEC_ID_H264, MKTAG('a', 'i', '1', '2') }, /* AVC-Intra 100M 1080p25/50 */
00152     { CODEC_ID_H264, MKTAG('a', 'i', '1', '3') }, /* AVC-Intra 100M 1080p24/30/60 */
00153     { CODEC_ID_H264, MKTAG('a', 'i', '1', '5') }, /* AVC-Intra 100M 1080i50 */
00154     { CODEC_ID_H264, MKTAG('a', 'i', '1', '6') }, /* AVC-Intra 100M 1080i60 */
00155 
00156     { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, /* Apple MPEG-1 Camcorder */
00157     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
00158     { CODEC_ID_MPEG2VIDEO, MKTAG('m', '2', 'v', '1') }, /* Apple MPEG-2 Camcorder */
00159     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */
00160     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */
00161     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* MPEG2 HDV 1080i50 */
00162     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '4') }, /* MPEG2 HDV 720p24 */
00163     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '5') }, /* MPEG2 HDV 720p25 */
00164     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '6') }, /* MPEG2 HDV 1080p24 */
00165     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '7') }, /* MPEG2 HDV 1080p25 */
00166     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '8') }, /* MPEG2 HDV 1080p30 */
00167     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '9') }, /* MPEG2 HDV 720p60 JVC */
00168     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', 'a') }, /* MPEG2 HDV 720p50 */
00169     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
00170     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
00171     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'n') }, /* MPEG2 IMX NTSC 525/60 40mb/s produced by FCP */
00172     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */
00173     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
00174     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
00175     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '4') }, /* XDCAM HD422 720p24 CBR */
00176     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '5') }, /* XDCAM HD422 720p25 CBR */
00177     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */
00178     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'a') }, /* XDCAM HD422 720p50 CBR */
00179     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'b') }, /* XDCAM HD422 1080i60 CBR */
00180     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'c') }, /* XDCAM HD422 1080i50 CBR */
00181     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'd') }, /* XDCAM HD422 1080p24 CBR */
00182     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'e') }, /* XDCAM HD422 1080p25 CBR */
00183     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'f') }, /* XDCAM HD422 1080p30 CBR */
00184     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '1') }, /* XDCAM EX 720p30 VBR */
00185     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '2') }, /* XDCAM HD 1080i60 */
00186     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '3') }, /* XDCAM HD 1080i50 VBR */
00187     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '4') }, /* XDCAM EX 720p24 VBR */
00188     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '5') }, /* XDCAM EX 720p25 VBR */
00189     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '6') }, /* XDCAM HD 1080p24 VBR */
00190     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '7') }, /* XDCAM HD 1080p25 VBR */
00191     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '8') }, /* XDCAM HD 1080p30 VBR */
00192     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '9') }, /* XDCAM EX 720p60 VBR */
00193     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'a') }, /* XDCAM EX 720p50 VBR */
00194     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'b') }, /* XDCAM EX 1080i60 VBR */
00195     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'c') }, /* XDCAM EX 1080i50 VBR */
00196     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'd') }, /* XDCAM EX 1080p24 VBR */
00197     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'e') }, /* XDCAM EX 1080p25 VBR */
00198     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'f') }, /* XDCAM EX 1080p30 VBR */
00199     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', 'd') }, /* XDCAM HD 540p */
00200     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', '2') }, /* XDCAM HD422 540p */
00201     { CODEC_ID_MPEG2VIDEO, MKTAG('A', 'V', 'm', 'p') }, /* AVID IMX PAL */
00202 
00203     { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
00204 
00205     { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */
00206     { CODEC_ID_TIFF,  MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */
00207     { CODEC_ID_GIF,   MKTAG('g', 'i', 'f', ' ') }, /* embedded gif files as frames (usually one "click to play movie" frame) */
00208     { CODEC_ID_PNG,   MKTAG('p', 'n', 'g', ' ') },
00209 
00210     { CODEC_ID_VC1, MKTAG('v', 'c', '-', '1') }, /* SMPTE RP 2025 */
00211     { CODEC_ID_CAVS, MKTAG('a', 'v', 's', '2') },
00212 
00213     { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
00214     { CODEC_ID_DNXHD, MKTAG('A', 'V', 'd', 'n') }, /* AVID DNxHD */
00215     { CODEC_ID_FLV1,  MKTAG('H', '2', '6', '3') }, /* Flash Media Server */
00216     { CODEC_ID_MSMPEG4V3, MKTAG('3', 'I', 'V', 'D') }, /* 3ivx DivX Doctor */
00217     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', '1', 'x') }, /* AVID 1:1x */
00218     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'u', 'p') },
00219     { CODEC_ID_SGI,   MKTAG('s', 'g', 'i', ' ') }, /* SGI  */
00220     { CODEC_ID_DPX,   MKTAG('d', 'p', 'x', ' ') }, /* DPX */
00221 
00222     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'h') }, /* Apple ProRes 422 High Quality */
00223     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'n') }, /* Apple ProRes 422 Standard Definition */
00224     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 's') }, /* Apple ProRes 422 LT */
00225     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'o') }, /* Apple ProRes 422 Proxy */
00226     { CODEC_ID_PRORES, MKTAG('a', 'p', '4', 'h') }, /* Apple ProRes 4444 */
00227 
00228     { CODEC_ID_NONE, 0 },
00229 };
00230 
00231 const AVCodecTag codec_movaudio_tags[] = {
00232     { CODEC_ID_AAC,             MKTAG('m', 'p', '4', 'a') },
00233     { CODEC_ID_AC3,             MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
00234     { CODEC_ID_AC3,             MKTAG('s', 'a', 'c', '3') }, /* Nero Recode */
00235     { CODEC_ID_ADPCM_IMA_QT,    MKTAG('i', 'm', 'a', '4') },
00236     { CODEC_ID_ALAC,            MKTAG('a', 'l', 'a', 'c') },
00237     { CODEC_ID_AMR_NB,          MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
00238     { CODEC_ID_AMR_WB,          MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
00239     { CODEC_ID_DTS,             MKTAG('d', 't', 's', 'c') }, /* mp4ra.org */
00240     { CODEC_ID_DTS,             MKTAG('D', 'T', 'S', ' ') }, /* non-standard */
00241     { CODEC_ID_DVAUDIO,         MKTAG('v', 'd', 'v', 'a') },
00242     { CODEC_ID_DVAUDIO,         MKTAG('d', 'v', 'c', 'a') },
00243     { CODEC_ID_GSM,             MKTAG('a', 'g', 's', 'm') },
00244     { CODEC_ID_MACE3,           MKTAG('M', 'A', 'C', '3') },
00245     { CODEC_ID_MACE6,           MKTAG('M', 'A', 'C', '6') },
00246     { CODEC_ID_MP1,             MKTAG('.', 'm', 'p', '1') },
00247     { CODEC_ID_MP2,             MKTAG('.', 'm', 'p', '2') },
00248     { CODEC_ID_MP3,             MKTAG('.', 'm', 'p', '3') },
00249     { CODEC_ID_MP3,             0x6D730055                },
00250     { CODEC_ID_NELLYMOSER,      MKTAG('n', 'm', 'o', 's') }, /* Flash Media Server */
00251     { CODEC_ID_PCM_ALAW,        MKTAG('a', 'l', 'a', 'w') },
00252     { CODEC_ID_PCM_F32BE,       MKTAG('f', 'l', '3', '2') },
00253     { CODEC_ID_PCM_F32LE,       MKTAG('f', 'l', '3', '2') },
00254     { CODEC_ID_PCM_F64BE,       MKTAG('f', 'l', '6', '4') },
00255     { CODEC_ID_PCM_F64LE,       MKTAG('f', 'l', '6', '4') },
00256     { CODEC_ID_PCM_MULAW,       MKTAG('u', 'l', 'a', 'w') },
00257     { CODEC_ID_PCM_S16BE,       MKTAG('t', 'w', 'o', 's') },
00258     { CODEC_ID_PCM_S16LE,       MKTAG('s', 'o', 'w', 't') },
00259     { CODEC_ID_PCM_S16BE,       MKTAG('l', 'p', 'c', 'm') },
00260     { CODEC_ID_PCM_S16LE,       MKTAG('l', 'p', 'c', 'm') },
00261     { CODEC_ID_PCM_S24BE,       MKTAG('i', 'n', '2', '4') },
00262     { CODEC_ID_PCM_S24LE,       MKTAG('i', 'n', '2', '4') },
00263     { CODEC_ID_PCM_S32BE,       MKTAG('i', 'n', '3', '2') },
00264     { CODEC_ID_PCM_S32LE,       MKTAG('i', 'n', '3', '2') },
00265     { CODEC_ID_PCM_S8,          MKTAG('s', 'o', 'w', 't') },
00266     { CODEC_ID_PCM_U8,          MKTAG('r', 'a', 'w', ' ') },
00267     { CODEC_ID_PCM_U8,          MKTAG('N', 'O', 'N', 'E') },
00268     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'p') },
00269     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'q') },
00270     { CODEC_ID_QCELP,           MKTAG('s', 'q', 'c', 'p') }, /* ISO Media fourcc */
00271     { CODEC_ID_QDM2,            MKTAG('Q', 'D', 'M', '2') },
00272     { CODEC_ID_QDMC,            MKTAG('Q', 'D', 'M', 'C') },
00273     { CODEC_ID_SPEEX,           MKTAG('s', 'p', 'e', 'x') }, /* Flash Media Server */
00274     { CODEC_ID_WMAV2,           MKTAG('W', 'M', 'A', '2') },
00275     { CODEC_ID_NONE, 0 },
00276 };
00277 
00278 const AVCodecTag ff_codec_movsubtitle_tags[] = {
00279     { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
00280     { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
00281     { CODEC_ID_NONE, 0 },
00282 };
00283 
00284 /* map numeric codes from mdhd atom to ISO 639 */
00285 /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
00286 /* http://developer.apple.com/documentation/mac/Text/Text-368.html */
00287 /* deprecated by putting the code as 3*5bit ascii */
00288 static const char mov_mdhd_language_map[][4] = {
00289     /* 0-9 */
00290     "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
00291     "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
00292     "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav",    "",
00293     "fo ",    "", "rus", "chi",    "", "iri", "alb", "ron", "ces", "slk",
00294     "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
00295     /*?*/
00296     "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon",    "", "pus",
00297     "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
00298     "pa ", "ori", "mal", "kan", "tam", "tel",    "", "bur", "khm", "lao",
00299     /*                   roman? arabic? */
00300     "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
00301     /*==rundi?*/
00302        "", "run",    "", "mlg", "epo",    "",    "",    "",    "",    "",
00303     /* 100 */
00304        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00305        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00306        "",    "",    "",    "",    "",    "",    "",    "", "wel", "baq",
00307     "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
00308 };
00309 
00310 int ff_mov_iso639_to_lang(const char lang[4], int mp4)
00311 {
00312     int i, code = 0;
00313 
00314     /* old way, only for QT? */
00315     for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
00316         if (!strcmp(lang, mov_mdhd_language_map[i]))
00317             return i;
00318     }
00319     /* XXX:can we do that in mov too? */
00320     if (!mp4)
00321         return -1;
00322     /* handle undefined as such */
00323     if (lang[0] == '\0')
00324         lang = "und";
00325     /* 5bit ascii */
00326     for (i = 0; i < 3; i++) {
00327         uint8_t c = lang[i];
00328         c -= 0x60;
00329         if (c > 0x1f)
00330             return -1;
00331         code <<= 5;
00332         code |= c;
00333     }
00334     return code;
00335 }
00336 
00337 int ff_mov_lang_to_iso639(unsigned code, char to[4])
00338 {
00339     int i;
00340     memset(to, 0, 4);
00341     /* is it the mangled iso code? */
00342     /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
00343     if (code >= 0x400 && code != 0x7fff) {
00344         for (i = 2; i >= 0; i--) {
00345             to[i] = 0x60 + (code & 0x1f);
00346             code >>= 5;
00347         }
00348         return 1;
00349     }
00350     /* old fashion apple lang code */
00351     if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
00352         return 0;
00353     if (!mov_mdhd_language_map[code][0])
00354         return 0;
00355     memcpy(to, mov_mdhd_language_map[code], 4);
00356     return 1;
00357 }
00358 
00359 int ff_mp4_read_descr_len(AVIOContext *pb)
00360 {
00361     int len = 0;
00362     int count = 4;
00363     while (count--) {
00364         int c = avio_r8(pb);
00365         len = (len << 7) | (c & 0x7f);
00366         if (!(c & 0x80))
00367             break;
00368     }
00369     return len;
00370 }
00371 
00372 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
00373 {
00374     int len;
00375     *tag = avio_r8(pb);
00376     len = ff_mp4_read_descr_len(pb);
00377     av_dlog(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
00378     return len;
00379 }
00380 
00381 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
00382 {
00383      int flags;
00384      if (es_id) *es_id = avio_rb16(pb);
00385      else                avio_rb16(pb);
00386      flags = avio_r8(pb);
00387      if (flags & 0x80) //streamDependenceFlag
00388          avio_rb16(pb);
00389      if (flags & 0x40) { //URL_Flag
00390          int len = avio_r8(pb);
00391          avio_skip(pb, len);
00392      }
00393      if (flags & 0x20) //OCRstreamFlag
00394          avio_rb16(pb);
00395 }
00396 
00397 static const AVCodecTag mp4_audio_types[] = {
00398     { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
00399     { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
00400     { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
00401     { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
00402     { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
00403     { CODEC_ID_NONE,   AOT_NULL },
00404 };
00405 
00406 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
00407 {
00408     int len, tag;
00409     int object_type_id = avio_r8(pb);
00410     avio_r8(pb); /* stream type */
00411     avio_rb24(pb); /* buffer size db */
00412     avio_rb32(pb); /* max bitrate */
00413     avio_rb32(pb); /* avg bitrate */
00414 
00415     st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
00416     av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
00417     len = ff_mp4_read_descr(fc, pb, &tag);
00418     if (tag == MP4DecSpecificDescrTag) {
00419         av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
00420         if (!len || (uint64_t)len > (1<<30))
00421             return -1;
00422         av_free(st->codec->extradata);
00423         st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
00424         if (!st->codec->extradata)
00425             return AVERROR(ENOMEM);
00426         avio_read(pb, st->codec->extradata, len);
00427         st->codec->extradata_size = len;
00428         if (st->codec->codec_id == CODEC_ID_AAC) {
00429             MPEG4AudioConfig cfg;
00430             avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
00431                                          st->codec->extradata_size * 8, 1);
00432             st->codec->channels = cfg.channels;
00433             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
00434                 st->codec->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
00435             else if (cfg.ext_sample_rate)
00436                 st->codec->sample_rate = cfg.ext_sample_rate;
00437             else
00438                 st->codec->sample_rate = cfg.sample_rate;
00439             av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
00440                     "sample rate %d ext sample rate %d\n", st->codec->channels,
00441                     cfg.object_type, cfg.ext_object_type,
00442                     cfg.sample_rate, cfg.ext_sample_rate);
00443             if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
00444                                                         cfg.object_type)))
00445                 st->codec->codec_id = CODEC_ID_AAC;
00446         }
00447     }
00448     return 0;
00449 }