Libav
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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 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 #include "avformat.h" 00025 #include "riff.h" 00026 #include "isom.h" 00027 00028 /* http://www.mp4ra.org */ 00029 /* ordered by muxing preference */ 00030 const AVCodecTag ff_mp4_obj_type[] = { 00031 { CODEC_ID_MOV_TEXT , 0x08 }, 00032 { CODEC_ID_MPEG4 , 0x20 }, 00033 { CODEC_ID_H264 , 0x21 }, 00034 { CODEC_ID_AAC , 0x40 }, 00035 { CODEC_ID_MP4ALS , 0x40 }, /* 14496-3 ALS */ 00036 { CODEC_ID_MPEG2VIDEO, 0x61 }, /* MPEG2 Main */ 00037 { CODEC_ID_MPEG2VIDEO, 0x60 }, /* MPEG2 Simple */ 00038 { CODEC_ID_MPEG2VIDEO, 0x62 }, /* MPEG2 SNR */ 00039 { CODEC_ID_MPEG2VIDEO, 0x63 }, /* MPEG2 Spatial */ 00040 { CODEC_ID_MPEG2VIDEO, 0x64 }, /* MPEG2 High */ 00041 { CODEC_ID_MPEG2VIDEO, 0x65 }, /* MPEG2 422 */ 00042 { CODEC_ID_AAC , 0x66 }, /* MPEG2 AAC Main */ 00043 { CODEC_ID_AAC , 0x67 }, /* MPEG2 AAC Low */ 00044 { CODEC_ID_AAC , 0x68 }, /* MPEG2 AAC SSR */ 00045 { CODEC_ID_MP3 , 0x69 }, /* 13818-3 */ 00046 { CODEC_ID_MP2 , 0x69 }, /* 11172-3 */ 00047 { CODEC_ID_MPEG1VIDEO, 0x6A }, /* 11172-2 */ 00048 { CODEC_ID_MP3 , 0x6B }, /* 11172-3 */ 00049 { CODEC_ID_MJPEG , 0x6C }, /* 10918-1 */ 00050 { CODEC_ID_PNG , 0x6D }, 00051 { CODEC_ID_JPEG2000 , 0x6E }, /* 15444-1 */ 00052 { CODEC_ID_VC1 , 0xA3 }, 00053 { CODEC_ID_DIRAC , 0xA4 }, 00054 { CODEC_ID_AC3 , 0xA5 }, 00055 { CODEC_ID_VORBIS , 0xDD }, /* non standard, gpac uses it */ 00056 { CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* non standard, see unsupported-embedded-subs-2.mp4 */ 00057 { CODEC_ID_QCELP , 0xE1 }, 00058 { CODEC_ID_NONE , 0 }, 00059 }; 00060 00061 const AVCodecTag codec_movvideo_tags[] = { 00062 /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */ 00063 00064 { CODEC_ID_RAWVIDEO, MKTAG('r', 'a', 'w', ' ') }, /* Uncompressed RGB */ 00065 { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') }, /* Uncompressed YUV422 */ 00066 { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, /* YUV with alpha-channel (AVID Uncompressed) */ 00067 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */ 00068 { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') }, /* same as 2vuy but byte swapped */ 00069 00070 { CODEC_ID_R210, MKTAG('r', '2', '1', '0') }, /* UNCOMPRESSED 10BIT RGB */ 00071 { CODEC_ID_V210, MKTAG('v', '2', '1', '0') }, /* UNCOMPRESSED 10BIT 4:2:2 */ 00072 00073 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */ 00074 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */ 00075 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */ 00076 /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */ 00077 { CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') }, /* Motion JPEG OpenDML */ 00078 { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */ 00079 00080 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */ 00081 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */ 00082 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/ 00083 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */ 00084 00085 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, 00086 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */ 00087 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') }, 00088 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */ 00089 00090 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */ 00091 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */ 00092 00093 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */ 00094 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */ 00095 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */ 00096 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */ 00097 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */ 00098 { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */ 00099 { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', '1') }, /* AVID DV100 */ 00100 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'q') }, /* DVCPRO HD 720p50 */ 00101 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'p') }, /* DVCPRO HD 720p60 */ 00102 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') }, 00103 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '2') }, 00104 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '4') }, 00105 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */ 00106 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */ 00107 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '3') }, /* DVCPRO HD 30p produced by FCP */ 00108 00109 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */ 00110 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */ 00111 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */ 00112 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */ 00113 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */ 00114 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */ 00115 { CODEC_ID_MSRLE, MKTAG('W', 'R', 'L', 'E') }, 00116 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */ 00117 00118 { CODEC_ID_RAWVIDEO, MKTAG('W', 'R', 'A', 'W') }, 00119 00120 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */ 00121 00122 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */ 00123 { CODEC_ID_MPEG1VIDEO, MKTAG('m', '1', 'v', '1') }, 00124 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */ 00125 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */ 00126 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* MPEG2 HDV 1080i50 */ 00127 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '5') }, /* MPEG2 HDV 720p25 */ 00128 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '6') }, /* MPEG2 HDV 1080p24 */ 00129 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '7') }, /* MPEG2 HDV 1080p25 */ 00130 { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '8') }, /* MPEG2 HDV 1080p30 */ 00131 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */ 00132 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */ 00133 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'n') }, /* MPEG2 IMX NTSC 525/60 40mb/s produced by FCP */ 00134 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */ 00135 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */ 00136 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */ 00137 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */ 00138 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'a') }, /* XDCAM HD422 720p50 CBR */ 00139 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'b') }, /* XDCAM HD422 1080i60 CBR */ 00140 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'c') }, /* XDCAM HD422 1080i50 CBR */ 00141 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'd') }, /* XDCAM HD422 1080p24 CBR */ 00142 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'e') }, /* XDCAM HD422 1080p25 CBR */ 00143 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'f') }, /* XDCAM HD422 1080p30 CBR */ 00144 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '1') }, /* XDCAM EX 720p30 VBR */ 00145 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '2') }, /* XDCAM HD 1080i60 */ 00146 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '3') }, /* XDCAM HD 1080i50 VBR */ 00147 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '4') }, /* XDCAM EX 720p24 VBR */ 00148 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '5') }, /* XDCAM EX 720p25 VBR */ 00149 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '6') }, /* XDCAM HD 1080p24 VBR */ 00150 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '7') }, /* XDCAM HD 1080p25 VBR */ 00151 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '8') }, /* XDCAM HD 1080p30 VBR */ 00152 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '9') }, /* XDCAM EX 720p60 VBR */ 00153 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'a') }, /* XDCAM EX 720p50 VBR */ 00154 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'b') }, /* XDCAM EX 1080i60 VBR */ 00155 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'c') }, /* XDCAM EX 1080i50 VBR */ 00156 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'd') }, /* XDCAM EX 1080p24 VBR */ 00157 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'e') }, /* XDCAM EX 1080p25 VBR */ 00158 { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'f') }, /* XDCAM EX 1080p30 VBR */ 00159 { CODEC_ID_MPEG2VIDEO, MKTAG('A', 'V', 'm', 'p') }, /* AVID IMX PAL */ 00160 { CODEC_ID_MPEG2VIDEO, MKTAG('m', '2', 'v', '1') }, 00161 00162 { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */ 00163 00164 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */ 00165 { CODEC_ID_TIFF, MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */ 00166 { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, /* embedded gif files as frames (usually one "click to play movie" frame) */ 00167 { CODEC_ID_PNG, MKTAG('p', 'n', 'g', ' ') }, 00168 00169 { CODEC_ID_VC1, MKTAG('v', 'c', '-', '1') }, /* SMPTE RP 2025 */ 00170 { CODEC_ID_CAVS, MKTAG('a', 'v', 's', '2') }, 00171 00172 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') }, 00173 { CODEC_ID_DNXHD, MKTAG('A', 'V', 'd', 'n') }, /* AVID DNxHD */ 00174 { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', '1', 'x') }, /* AVID 1:1x */ 00175 { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'u', 'p') }, 00176 { CODEC_ID_SGI, MKTAG('s', 'g', 'i', ' ') }, /* SGI */ 00177 { CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') }, /* DPX */ 00178 00179 { CODEC_ID_NONE, 0 }, 00180 }; 00181 00182 const AVCodecTag codec_movaudio_tags[] = { 00183 { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') }, 00184 { CODEC_ID_PCM_S32LE, MKTAG('i', 'n', '3', '2') }, 00185 { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') }, 00186 { CODEC_ID_PCM_S24LE, MKTAG('i', 'n', '2', '4') }, 00187 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */ 00188 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */ 00189 { CODEC_ID_PCM_S16LE, MKTAG('l', 'p', 'c', 'm') }, 00190 { CODEC_ID_PCM_F32BE, MKTAG('f', 'l', '3', '2') }, 00191 { CODEC_ID_PCM_F32LE, MKTAG('f', 'l', '3', '2') }, 00192 { CODEC_ID_PCM_F64BE, MKTAG('f', 'l', '6', '4') }, 00193 { CODEC_ID_PCM_F64LE, MKTAG('f', 'l', '6', '4') }, 00194 { CODEC_ID_PCM_S8, MKTAG('s', 'o', 'w', 't') }, 00195 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */ 00196 { CODEC_ID_PCM_U8, MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */ 00197 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */ 00198 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */ 00199 00200 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */ 00201 00202 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */ 00203 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */ 00204 00205 { CODEC_ID_MP1, MKTAG('.', 'm', 'p', '1') }, /* MPEG layer 1 */ 00206 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '2') }, /* MPEG layer 2 */ 00207 00208 { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */ 00209 { CODEC_ID_MP3, 0x6D730055 }, /* MPEG layer 3 */ 00210 00211 /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */ 00212 00213 { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */ 00214 { CODEC_ID_AC3, MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */ 00215 { CODEC_ID_AC3, MKTAG('s', 'a', 'c', '3') }, /* Nero Recode */ 00216 00217 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */ 00218 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */ 00219 00220 { CODEC_ID_GSM, MKTAG('a', 'g', 's', 'm') }, 00221 { CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */ 00222 00223 { CODEC_ID_QCELP, MKTAG('Q','c','l','p') }, 00224 { CODEC_ID_QCELP, MKTAG('Q','c','l','q') }, 00225 { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */ 00226 00227 { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */ 00228 00229 { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') }, 00230 { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') }, 00231 00232 { CODEC_ID_WMAV2, MKTAG('W', 'M', 'A', '2') }, 00233 00234 { CODEC_ID_NONE, 0 }, 00235 }; 00236 00237 const AVCodecTag ff_codec_movsubtitle_tags[] = { 00238 { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') }, 00239 { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') }, 00240 { CODEC_ID_NONE, 0 }, 00241 }; 00242 00243 /* map numeric codes from mdhd atom to ISO 639 */ 00244 /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */ 00245 /* http://developer.apple.com/documentation/mac/Text/Text-368.html */ 00246 /* deprecated by putting the code as 3*5bit ascii */ 00247 static const char mov_mdhd_language_map[][4] = { 00248 /* 0-9 */ 00249 "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor", 00250 "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/, 00251 "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav", "", 00252 "fo ", "", "rus", "chi", "", "iri", "alb", "ron", "ces", "slk", 00253 "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze", 00254 /*?*/ 00255 "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon", "", "pus", 00256 "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj", 00257 "pa ", "ori", "mal", "kan", "tam", "tel", "", "bur", "khm", "lao", 00258 /* roman? arabic? */ 00259 "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa", 00260 /*==rundi?*/ 00261 "", "run", "", "mlg", "epo", "", "", "", "", "", 00262 /* 100 */ 00263 "", "", "", "", "", "", "", "", "", "", 00264 "", "", "", "", "", "", "", "", "", "", 00265 "", "", "", "", "", "", "", "", "wel", "baq", 00266 "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav" 00267 }; 00268 00269 int ff_mov_iso639_to_lang(const char lang[4], int mp4) 00270 { 00271 int i, code = 0; 00272 00273 /* old way, only for QT? */ 00274 for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) { 00275 if (!strcmp(lang, mov_mdhd_language_map[i])) 00276 return i; 00277 } 00278 /* XXX:can we do that in mov too? */ 00279 if (!mp4) 00280 return -1; 00281 /* handle undefined as such */ 00282 if (lang[0] == '\0') 00283 lang = "und"; 00284 /* 5bit ascii */ 00285 for (i = 0; i < 3; i++) { 00286 uint8_t c = lang[i]; 00287 c -= 0x60; 00288 if (c > 0x1f) 00289 return -1; 00290 code <<= 5; 00291 code |= c; 00292 } 00293 return code; 00294 } 00295 00296 int ff_mov_lang_to_iso639(unsigned code, char to[4]) 00297 { 00298 int i; 00299 memset(to, 0, 4); 00300 /* is it the mangled iso code? */ 00301 /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */ 00302 if (code > 138) { 00303 for (i = 2; i >= 0; i--) { 00304 to[i] = 0x60 + (code & 0x1f); 00305 code >>= 5; 00306 } 00307 return 1; 00308 } 00309 /* old fashion apple lang code */ 00310 if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map)) 00311 return 0; 00312 if (!mov_mdhd_language_map[code][0]) 00313 return 0; 00314 memcpy(to, mov_mdhd_language_map[code], 4); 00315 return 1; 00316 }