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_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_AVRP,   MKTAG('A', 'V', 'r', 'p') }, /* Avid 1:1 10-bit RGB Packer */
00093     { CODEC_ID_AVRP,   MKTAG('S', 'U', 'D', 'S') }, /* Avid DS Uncompressed */
00094     { CODEC_ID_V210,   MKTAG('v', '2', '1', '0') }, /* UNCOMPRESSED 10BIT 4:2:2 */
00095     { CODEC_ID_V308,   MKTAG('v', '3', '0', '8') }, /* UNCOMPRESSED 4:4:4 */
00096     { CODEC_ID_V410,   MKTAG('v', '4', '1', '0') }, /* UNCOMPRESSED 10BIT 4:4:4 */
00097     { CODEC_ID_Y41P,   MKTAG('Y', '4', '1', 'P') }, /* UNCOMPRESSED 12BIT 4:1:1 */
00098     { CODEC_ID_YUV4,   MKTAG('y', 'u', 'v', '4') }, /* libquicktime packed yuv420p */
00099 
00100     { CODEC_ID_MJPEG,  MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
00101     { CODEC_ID_MJPEG,  MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
00102     { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
00103 /*  { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
00104     { CODEC_ID_MJPEG,  MKTAG('d', 'm', 'b', '1') }, /* Motion JPEG OpenDML */
00105     { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
00106 
00107     { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
00108     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
00109     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
00110     { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
00111 
00112     { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
00113     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
00114     { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
00115     { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
00116 
00117     { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
00118     { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
00119 
00120     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
00121     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
00122     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
00123     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
00124     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
00125     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
00126     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', '1') }, /* AVID DV100 */
00127     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'q') }, /* DVCPRO HD 720p50 */
00128     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'p') }, /* DVCPRO HD 720p60 */
00129     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
00130     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '2') },
00131     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '4') },
00132     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
00133     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
00134     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '3') }, /* DVCPRO HD 30p produced by FCP */
00135 
00136     { CODEC_ID_VP3,     MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
00137     { CODEC_ID_RPZA,    MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
00138     { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
00139     { CODEC_ID_8BPS,    MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
00140     { CODEC_ID_SMC,     MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
00141     { CODEC_ID_QTRLE,   MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
00142     { CODEC_ID_MSRLE,   MKTAG('W', 'R', 'L', 'E') },
00143     { CODEC_ID_QDRAW,   MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
00144 
00145     { CODEC_ID_RAWVIDEO, MKTAG('W', 'R', 'A', 'W') },
00146 
00147     { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
00148     { CODEC_ID_H264, MKTAG('a', 'i', '5', 'p') }, /* AVC-Intra  50M 720p24/30/60 */
00149     { CODEC_ID_H264, MKTAG('a', 'i', '5', 'q') }, /* AVC-Intra  50M 720p25/50 */
00150     { CODEC_ID_H264, MKTAG('a', 'i', '5', '2') }, /* AVC-Intra  50M 1080p25/50 */
00151     { CODEC_ID_H264, MKTAG('a', 'i', '5', '3') }, /* AVC-Intra  50M 1080p24/30/60 */
00152     { CODEC_ID_H264, MKTAG('a', 'i', '5', '5') }, /* AVC-Intra  50M 1080i50 */
00153     { CODEC_ID_H264, MKTAG('a', 'i', '5', '6') }, /* AVC-Intra  50M 1080i60 */
00154     { CODEC_ID_H264, MKTAG('a', 'i', '1', 'p') }, /* AVC-Intra 100M 720p24/30/60 */
00155     { CODEC_ID_H264, MKTAG('a', 'i', '1', 'q') }, /* AVC-Intra 100M 720p25/50 */
00156     { CODEC_ID_H264, MKTAG('a', 'i', '1', '2') }, /* AVC-Intra 100M 1080p25/50 */
00157     { CODEC_ID_H264, MKTAG('a', 'i', '1', '3') }, /* AVC-Intra 100M 1080p24/30/60 */
00158     { CODEC_ID_H264, MKTAG('a', 'i', '1', '5') }, /* AVC-Intra 100M 1080i50 */
00159     { CODEC_ID_H264, MKTAG('a', 'i', '1', '6') }, /* AVC-Intra 100M 1080i60 */
00160 
00161     { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, /* Apple MPEG-1 Camcorder */
00162     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
00163     { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', ' ') },
00164     { CODEC_ID_MPEG2VIDEO, MKTAG('m', '2', 'v', '1') }, /* Apple MPEG-2 Camcorder */
00165     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */
00166     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */
00167     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* MPEG2 HDV 1080i50 */
00168     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '4') }, /* MPEG2 HDV 720p24 */
00169     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '5') }, /* MPEG2 HDV 720p25 */
00170     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '6') }, /* MPEG2 HDV 1080p24 */
00171     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '7') }, /* MPEG2 HDV 1080p25 */
00172     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '8') }, /* MPEG2 HDV 1080p30 */
00173     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '9') }, /* MPEG2 HDV 720p60 JVC */
00174     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', 'a') }, /* MPEG2 HDV 720p50 */
00175     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
00176     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
00177     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'n') }, /* MPEG2 IMX NTSC 525/60 40mb/s produced by FCP */
00178     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */
00179     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
00180     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
00181     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '4') }, /* XDCAM HD422 720p24 CBR */
00182     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '5') }, /* XDCAM HD422 720p25 CBR */
00183     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */
00184     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'a') }, /* XDCAM HD422 720p50 CBR */
00185     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'b') }, /* XDCAM HD422 1080i60 CBR */
00186     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'c') }, /* XDCAM HD422 1080i50 CBR */
00187     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'd') }, /* XDCAM HD422 1080p24 CBR */
00188     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'e') }, /* XDCAM HD422 1080p25 CBR */
00189     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'f') }, /* XDCAM HD422 1080p30 CBR */
00190     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '1') }, /* XDCAM EX 720p30 VBR */
00191     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '2') }, /* XDCAM HD 1080i60 */
00192     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '3') }, /* XDCAM HD 1080i50 VBR */
00193     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '4') }, /* XDCAM EX 720p24 VBR */
00194     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '5') }, /* XDCAM EX 720p25 VBR */
00195     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '6') }, /* XDCAM HD 1080p24 VBR */
00196     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '7') }, /* XDCAM HD 1080p25 VBR */
00197     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '8') }, /* XDCAM HD 1080p30 VBR */
00198     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '9') }, /* XDCAM EX 720p60 VBR */
00199     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'a') }, /* XDCAM EX 720p50 VBR */
00200     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'b') }, /* XDCAM EX 1080i60 VBR */
00201     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'c') }, /* XDCAM EX 1080i50 VBR */
00202     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'd') }, /* XDCAM EX 1080p24 VBR */
00203     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'e') }, /* XDCAM EX 1080p25 VBR */
00204     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'f') }, /* XDCAM EX 1080p30 VBR */
00205     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', 'd') }, /* XDCAM HD 540p */
00206     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'h', '2') }, /* XDCAM HD422 540p */
00207     { CODEC_ID_MPEG2VIDEO, MKTAG('A', 'V', 'm', 'p') }, /* AVID IMX PAL */
00208 
00209     { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
00210 
00211     { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */
00212     { CODEC_ID_TIFF,  MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */
00213     { CODEC_ID_GIF,   MKTAG('g', 'i', 'f', ' ') }, /* embedded gif files as frames (usually one "click to play movie" frame) */
00214     { CODEC_ID_PNG,   MKTAG('p', 'n', 'g', ' ') },
00215 
00216     { CODEC_ID_VC1, MKTAG('v', 'c', '-', '1') }, /* SMPTE RP 2025 */
00217     { CODEC_ID_CAVS, MKTAG('a', 'v', 's', '2') },
00218 
00219     { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
00220     { CODEC_ID_DNXHD, MKTAG('A', 'V', 'd', 'n') }, /* AVID DNxHD */
00221 //  { CODEC_ID_FLV1,  MKTAG('H', '2', '6', '3') }, /* Flash Media Server */
00222     { CODEC_ID_MSMPEG4V3, MKTAG('3', 'I', 'V', 'D') }, /* 3ivx DivX Doctor */
00223     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', '1', 'x') }, /* AVID 1:1x */
00224     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'u', 'p') },
00225     { CODEC_ID_SGI,   MKTAG('s', 'g', 'i', ' ') }, /* SGI  */
00226     { CODEC_ID_DPX,   MKTAG('d', 'p', 'x', ' ') }, /* DPX */
00227 
00228     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'h') }, /* Apple ProRes 422 High Quality */
00229     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'n') }, /* Apple ProRes 422 Standard Definition */
00230     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 's') }, /* Apple ProRes 422 LT */
00231     { CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'o') }, /* Apple ProRes 422 Proxy */
00232     { CODEC_ID_PRORES, MKTAG('a', 'p', '4', 'h') }, /* Apple ProRes 4444 */
00233 
00234     { CODEC_ID_NONE, 0 },
00235 };
00236 
00237 const AVCodecTag codec_movaudio_tags[] = {
00238     { CODEC_ID_AAC,             MKTAG('m', 'p', '4', 'a') },
00239     { CODEC_ID_AC3,             MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
00240     { CODEC_ID_AC3,             MKTAG('s', 'a', 'c', '3') }, /* Nero Recode */
00241     { CODEC_ID_ADPCM_IMA_QT,    MKTAG('i', 'm', 'a', '4') },
00242     { CODEC_ID_ALAC,            MKTAG('a', 'l', 'a', 'c') },
00243     { CODEC_ID_AMR_NB,          MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
00244     { CODEC_ID_AMR_WB,          MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
00245     { CODEC_ID_DTS,             MKTAG('d', 't', 's', 'c') }, /* mp4ra.org */
00246     { CODEC_ID_DTS,             MKTAG('D', 'T', 'S', ' ') }, /* non-standard */
00247     { CODEC_ID_DVAUDIO,         MKTAG('v', 'd', 'v', 'a') },
00248     { CODEC_ID_DVAUDIO,         MKTAG('d', 'v', 'c', 'a') },
00249     { CODEC_ID_EAC3,            MKTAG('e', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
00250     { CODEC_ID_GSM,             MKTAG('a', 'g', 's', 'm') },
00251     { CODEC_ID_MACE3,           MKTAG('M', 'A', 'C', '3') },
00252     { CODEC_ID_MACE6,           MKTAG('M', 'A', 'C', '6') },
00253     { CODEC_ID_MP1,             MKTAG('.', 'm', 'p', '1') },
00254     { CODEC_ID_MP2,             MKTAG('.', 'm', 'p', '2') },
00255     { CODEC_ID_MP3,             MKTAG('.', 'm', 'p', '3') },
00256     { CODEC_ID_MP3,             0x6D730055                },
00257     { CODEC_ID_NELLYMOSER,      MKTAG('n', 'm', 'o', 's') }, /* Flash Media Server */
00258     { CODEC_ID_PCM_ALAW,        MKTAG('a', 'l', 'a', 'w') },
00259     { CODEC_ID_PCM_F32BE,       MKTAG('f', 'l', '3', '2') },
00260     { CODEC_ID_PCM_F32LE,       MKTAG('f', 'l', '3', '2') },
00261     { CODEC_ID_PCM_F64BE,       MKTAG('f', 'l', '6', '4') },
00262     { CODEC_ID_PCM_F64LE,       MKTAG('f', 'l', '6', '4') },
00263     { CODEC_ID_PCM_MULAW,       MKTAG('u', 'l', 'a', 'w') },
00264     { CODEC_ID_PCM_S16BE,       MKTAG('t', 'w', 'o', 's') },
00265     { CODEC_ID_PCM_S16LE,       MKTAG('s', 'o', 'w', 't') },
00266     { CODEC_ID_PCM_S16LE,       MKTAG('l', 'p', 'c', 'm') },
00267     { CODEC_ID_PCM_S24BE,       MKTAG('i', 'n', '2', '4') },
00268     { CODEC_ID_PCM_S24LE,       MKTAG('i', 'n', '2', '4') },
00269     { CODEC_ID_PCM_S32BE,       MKTAG('i', 'n', '3', '2') },
00270     { CODEC_ID_PCM_S32LE,       MKTAG('i', 'n', '3', '2') },
00271     { CODEC_ID_PCM_S8,          MKTAG('s', 'o', 'w', 't') },
00272     { CODEC_ID_PCM_U8,          MKTAG('r', 'a', 'w', ' ') },
00273     { CODEC_ID_PCM_U8,          MKTAG('N', 'O', 'N', 'E') },
00274     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'p') },
00275     { CODEC_ID_QCELP,           MKTAG('Q', 'c', 'l', 'q') },
00276     { CODEC_ID_QCELP,           MKTAG('s', 'q', 'c', 'p') }, /* ISO Media fourcc */
00277     { CODEC_ID_QDM2,            MKTAG('Q', 'D', 'M', '2') },
00278     { CODEC_ID_QDMC,            MKTAG('Q', 'D', 'M', 'C') },
00279     { CODEC_ID_SPEEX,           MKTAG('s', 'p', 'e', 'x') }, /* Flash Media Server */
00280     { CODEC_ID_WMAV2,           MKTAG('W', 'M', 'A', '2') },
00281     { CODEC_ID_NONE, 0 },
00282 };
00283 
00284 const AVCodecTag ff_codec_movsubtitle_tags[] = {
00285     { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
00286     { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
00287     { CODEC_ID_NONE, 0 },
00288 };
00289 
00290 /* map numeric codes from mdhd atom to ISO 639 */
00291 /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
00292 /* http://developer.apple.com/documentation/mac/Text/Text-368.html */
00293 /* deprecated by putting the code as 3*5bit ascii */
00294 static const char mov_mdhd_language_map[][4] = {
00295     /* 0-9 */
00296     "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
00297     "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
00298     "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav",    "",
00299     "fo ",    "", "rus", "chi",    "", "iri", "alb", "ron", "ces", "slk",
00300     "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
00301     /*?*/
00302     "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon",    "", "pus",
00303     "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
00304     "pa ", "ori", "mal", "kan", "tam", "tel",    "", "bur", "khm", "lao",
00305     /*                   roman? arabic? */
00306     "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
00307     /*==rundi?*/
00308        "", "run",    "", "mlg", "epo",    "",    "",    "",    "",    "",
00309     /* 100 */
00310        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00311        "",    "",    "",    "",    "",    "",    "",    "",    "",    "",
00312        "",    "",    "",    "",    "",    "",    "",    "", "wel", "baq",
00313     "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
00314 };
00315 
00316 int ff_mov_iso639_to_lang(const char lang[4], int mp4)
00317 {
00318     int i, code = 0;
00319 
00320     /* old way, only for QT? */
00321     for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
00322         if (!strcmp(lang, mov_mdhd_language_map[i]))
00323             return i;
00324     }
00325     /* XXX:can we do that in mov too? */
00326     if (!mp4)
00327         return -1;
00328     /* handle undefined as such */
00329     if (lang[0] == '\0')
00330         lang = "und";
00331     /* 5bit ascii */
00332     for (i = 0; i < 3; i++) {
00333         uint8_t c = lang[i];
00334         c -= 0x60;
00335         if (c > 0x1f)
00336             return -1;
00337         code <<= 5;
00338         code |= c;
00339     }
00340     return code;
00341 }
00342 
00343 int ff_mov_lang_to_iso639(unsigned code, char to[4])
00344 {
00345     int i;
00346     memset(to, 0, 4);
00347     /* is it the mangled iso code? */
00348     /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
00349     if (code > 138) {
00350         for (i = 2; i >= 0; i--) {
00351             to[i] = 0x60 + (code & 0x1f);
00352             code >>= 5;
00353         }
00354         return 1;
00355     }
00356     /* old fashion apple lang code */
00357     if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
00358         return 0;
00359     if (!mov_mdhd_language_map[code][0])
00360         return 0;
00361     memcpy(to, mov_mdhd_language_map[code], 4);
00362     return 1;
00363 }
00364 
00365 int ff_mp4_read_descr_len(AVIOContext *pb)
00366 {
00367     int len = 0;
00368     int count = 4;
00369     while (count--) {
00370         int c = avio_r8(pb);
00371         len = (len << 7) | (c & 0x7f);
00372         if (!(c & 0x80))
00373             break;
00374     }
00375     return len;
00376 }
00377 
00378 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
00379 {
00380     int len;
00381     *tag = avio_r8(pb);
00382     len = ff_mp4_read_descr_len(pb);
00383     av_dlog(fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
00384     return len;
00385 }
00386 
00387 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
00388 {
00389      int flags;
00390      if (es_id) *es_id = avio_rb16(pb);
00391      else                avio_rb16(pb);
00392      flags = avio_r8(pb);
00393      if (flags & 0x80) //streamDependenceFlag
00394          avio_rb16(pb);
00395      if (flags & 0x40) { //URL_Flag
00396          int len = avio_r8(pb);
00397          avio_skip(pb, len);
00398      }
00399      if (flags & 0x20) //OCRstreamFlag
00400          avio_rb16(pb);
00401 }
00402 
00403 static const AVCodecTag mp4_audio_types[] = {
00404     { CODEC_ID_MP3ON4, AOT_PS   }, /* old mp3on4 draft */
00405     { CODEC_ID_MP3ON4, AOT_L1   }, /* layer 1 */
00406     { CODEC_ID_MP3ON4, AOT_L2   }, /* layer 2 */
00407     { CODEC_ID_MP3ON4, AOT_L3   }, /* layer 3 */
00408     { CODEC_ID_MP4ALS, AOT_ALS  }, /* MPEG-4 ALS */
00409     { CODEC_ID_NONE,   AOT_NULL },
00410 };
00411 
00412 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
00413 {
00414     int len, tag;
00415     int object_type_id = avio_r8(pb);
00416     avio_r8(pb); /* stream type */
00417     avio_rb24(pb); /* buffer size db */
00418     avio_rb32(pb); /* max bitrate */
00419     avio_rb32(pb); /* avg bitrate */
00420 
00421     st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
00422     av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
00423     len = ff_mp4_read_descr(fc, pb, &tag);
00424     if (tag == MP4DecSpecificDescrTag) {
00425         av_dlog(fc, "Specific MPEG4 header len=%d\n", len);
00426         if (!len || (uint64_t)len > (1<<30))
00427             return -1;
00428         av_free(st->codec->extradata);
00429         st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
00430         if (!st->codec->extradata)
00431             return AVERROR(ENOMEM);
00432         avio_read(pb, st->codec->extradata, len);
00433         st->codec->extradata_size = len;
00434         if (st->codec->codec_id == CODEC_ID_AAC) {
00435             MPEG4AudioConfig cfg;
00436             avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
00437                                          st->codec->extradata_size * 8, 1);
00438             st->codec->channels = cfg.channels;
00439             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
00440                 st->codec->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
00441             else if (cfg.ext_sample_rate)
00442                 st->codec->sample_rate = cfg.ext_sample_rate;
00443             else
00444                 st->codec->sample_rate = cfg.sample_rate;
00445             av_dlog(fc, "mp4a config channels %d obj %d ext obj %d "
00446                     "sample rate %d ext sample rate %d\n", st->codec->channels,
00447                     cfg.object_type, cfg.ext_object_type,
00448                     cfg.sample_rate, cfg.ext_sample_rate);
00449             if (!(st->codec->codec_id = ff_codec_get_id(mp4_audio_types,
00450                                                         cfg.object_type)))
00451                 st->codec->codec_id = CODEC_ID_AAC;
00452         }
00453     }
00454     return 0;
00455 }
00456 
00457 typedef struct MovChannelLayout {
00458     int64_t  channel_layout;
00459     uint32_t layout_tag;
00460 } MovChannelLayout;
00461 
00462 static const MovChannelLayout mov_channel_layout[] = {
00463     { AV_CH_LAYOUT_MONO,                         (100<<16) | 1}, // kCAFChannelLayoutTag_Mono
00464     { AV_CH_LAYOUT_STEREO,                       (101<<16) | 2}, // kCAFChannelLayoutTag_Stereo
00465     { AV_CH_LAYOUT_STEREO,                       (102<<16) | 2}, // kCAFChannelLayoutTag_StereoHeadphones
00466     { AV_CH_LAYOUT_2_1,                          (131<<16) | 3}, // kCAFChannelLayoutTag_ITU_2_1
00467     { AV_CH_LAYOUT_QUAD,                         (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2
00468     { AV_CH_LAYOUT_2_2,                          (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2
00469     { AV_CH_LAYOUT_QUAD,                         (108<<16) | 4}, // kCAFChannelLayoutTag_Quadraphonic
00470     { AV_CH_LAYOUT_SURROUND,                     (113<<16) | 3}, // kCAFChannelLayoutTag_MPEG_3_0_A
00471     { AV_CH_LAYOUT_4POINT0,                      (115<<16) | 4}, // kCAFChannelLayoutTag_MPEG_4_0_A
00472     { AV_CH_LAYOUT_5POINT0_BACK,                 (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A
00473     { AV_CH_LAYOUT_5POINT0,                      (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A
00474     { AV_CH_LAYOUT_5POINT1_BACK,                 (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A
00475     { AV_CH_LAYOUT_5POINT1,                      (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A
00476     { AV_CH_LAYOUT_7POINT1,                      (128<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_C
00477     { AV_CH_LAYOUT_7POINT1_WIDE,                 (126<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_A
00478     { AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, // kCAFChannelLayoutTag_SMPTE_DTV
00479     { AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,   (133<<16) | 3}, // kCAFChannelLayoutTag_DVD_4
00480     { AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,      (134<<16) | 4}, // kCAFChannelLayoutTag_DVD_5
00481     { AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,     (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
00482     { AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,      (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
00483     { AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY, (136<<16) | 4}, // kCAFChannelLayoutTag_DVD_10
00484     { AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,  (137<<16) | 5}, // kCAFChannelLayoutTag_DVD_11
00485     { 0, 0},
00486 };
00487 
00488 void ff_mov_read_chan(AVFormatContext *s, int64_t size, AVCodecContext *codec)
00489 {
00490     uint32_t layout_tag;
00491     AVIOContext *pb = s->pb;
00492     const MovChannelLayout *layouts = mov_channel_layout;
00493     layout_tag = avio_rb32(pb);
00494     size -= 4;
00495     if (layout_tag == 0) { // kCAFChannelLayoutTag_UseChannelDescriptions
00496         // Channel descriptions not implemented
00497         av_log_ask_for_sample(s, "Unimplemented container channel layout.\n");
00498         avio_skip(pb, size);
00499         return;
00500     }
00501     if (layout_tag == 0x10000) { // kCAFChannelLayoutTag_UseChannelBitmap
00502         codec->channel_layout = avio_rb32(pb);
00503         size -= 4;
00504         avio_skip(pb, size);
00505         return;
00506     }
00507     while (layouts->channel_layout) {
00508         if (layout_tag == layouts->layout_tag) {
00509             codec->channel_layout = layouts->channel_layout;
00510             break;
00511         }
00512         layouts++;
00513     }
00514     if (!codec->channel_layout)
00515         av_log(s, AV_LOG_WARNING, "Unknown container channel layout.\n");
00516     avio_skip(pb, size);
00517 }
00518 
00519 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
00520 {
00521     const MovChannelLayout *layouts;
00522     uint32_t layout_tag = 0;
00523 
00524     for (layouts = mov_channel_layout; layouts->channel_layout; layouts++)
00525         if (channel_layout == layouts->channel_layout) {
00526             layout_tag = layouts->layout_tag;
00527             break;
00528         }
00529 
00530     if (layout_tag) {
00531         avio_wb32(pb, layout_tag); // mChannelLayoutTag
00532         avio_wb32(pb, 0);          // mChannelBitmap
00533     } else {
00534         avio_wb32(pb, 0x10000);    // kCAFChannelLayoutTag_UseChannelBitmap
00535         avio_wb32(pb, channel_layout);
00536     }
00537     avio_wb32(pb, 0);              // mNumberChannelDescriptions
00538 }
00539