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_S16LE,       MKTAG('l', 'p', 'c', 'm') },
00260     { CODEC_ID_PCM_S24BE,       MKTAG('i', 'n', '2', '4') },
00261     { CODEC_ID_PCM_S24LE,       MKTAG('i', 'n', '2', '4') },
00262     { CODEC_ID_PCM_S32BE,       MKTAG('i', 'n', '3', '2') },
00263     { CODEC_ID_PCM_S32LE,       MKTAG('i', 'n', '3', '2') },
00264     { CODEC_ID_PCM_S8,          MKTAG('s', 'o', 'w', 't') },
00265     { CODEC_ID_PCM_U8,          MKTAG('r', 'a', 'w', ' ') },
00266     { CODEC_ID_PCM_U8,          MKTAG('N', 'O', 'N', 'E') },
00267     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'p') },
00268     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'q') },
00269     { CODEC_ID_QCELP,           MKTAG('s', 'q', 'c', 'p') }, /* ISO Media fourcc */
00270     { CODEC_ID_QDM2,            MKTAG('Q', 'D', 'M', '2') },
00271     { CODEC_ID_QDMC,            MKTAG('Q', 'D', 'M', 'C') },
00272     { CODEC_ID_SPEEX,           MKTAG('s', 'p', 'e', 'x') }, /* Flash Media Server */
00273     { CODEC_ID_WMAV2,           MKTAG('W', 'M', 'A', '2') },
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 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
00381 {
00382      int flags;
00383      if (es_id) *es_id = avio_rb16(pb);
00384      else                avio_rb16(pb);
00385      flags = avio_r8(pb);
00386      if (flags & 0x80) //streamDependenceFlag
00387          avio_rb16(pb);
00388      if (flags & 0x40) { //URL_Flag
00389          int len = avio_r8(pb);
00390          avio_skip(pb, len);
00391      }
00392      if (flags & 0x20) //OCRstreamFlag
00393          avio_rb16(pb);
00394 }
00395 
00396 static const AVCodecTag mp4_audio_types[] = {
00397     { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
00398     { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
00399     { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
00400     { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
00401     { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
00402     { CODEC_ID_NONE,   AOT_NULL },
00403 };
00404 
00405 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
00406 {
00407     int len, tag;
00408     int object_type_id = avio_r8(pb);
00409     avio_r8(pb); /* stream type */
00410     avio_rb24(pb); /* buffer size db */
00411     avio_rb32(pb); /* max bitrate */
00412     avio_rb32(pb); /* avg bitrate */
00413 
00414     st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
00415     av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
00416     len = ff_mp4_read_descr(fc, pb, &tag);
00417     if (tag == MP4DecSpecificDescrTag) {
00418         av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
00419         if (!len || (uint64_t)len > (1<<30))
00420             return -1;
00421         av_free(st->codec->extradata);
00422         st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
00423         if (!st->codec->extradata)
00424             return AVERROR(ENOMEM);
00425         avio_read(pb, st->codec->extradata, len);
00426         st->codec->extradata_size = len;
00427         if (st->codec->codec_id == CODEC_ID_AAC) {
00428             MPEG4AudioConfig cfg;
00429             avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
00430                                          st->codec->extradata_size * 8, 1);
00431             st->codec->channels = cfg.channels;
00432             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
00433                 st->codec->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
00434             else if (cfg.ext_sample_rate)
00435                 st->codec->sample_rate = cfg.ext_sample_rate;
00436             else
00437                 st->codec->sample_rate = cfg.sample_rate;
00438             av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
00439                     "sample rate %d ext sample rate %d\n", st->codec->channels,
00440                     cfg.object_type, cfg.ext_object_type,
00441                     cfg.sample_rate, cfg.ext_sample_rate);
00442             if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
00443                                                         cfg.object_type)))
00444                 st->codec->codec_id = CODEC_ID_AAC;
00445         }
00446     }
00447     return 0;
00448 }