mirror of
https://git.ffmpeg.org/ffmpeg.git
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455 lines
16 KiB
C
455 lines
16 KiB
C
/*
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* ISO Media common code
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* Copyright (c) 2001 Fabrice Bellard
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* Copyright (c) 2002 Francois Revol <revol@free.fr>
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* Copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h"
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#include "demux.h"
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#include "internal.h"
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#include "isom.h"
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#include "libavcodec/mpeg4audio.h"
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#include "libavcodec/mpegaudiodata.h"
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#include "libavutil/channel_layout.h"
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/* http://www.mp4ra.org */
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/* ordered by muxing preference */
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const AVCodecTag ff_mp4_obj_type[] = {
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{ AV_CODEC_ID_MOV_TEXT , 0x08 },
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{ AV_CODEC_ID_MPEG4 , 0x20 },
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{ AV_CODEC_ID_H264 , 0x21 },
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{ AV_CODEC_ID_HEVC , 0x23 },
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{ AV_CODEC_ID_VVC , 0x33 },
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{ AV_CODEC_ID_AAC , 0x40 },
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{ AV_CODEC_ID_MP4ALS , 0x40 }, /* 14496-3 ALS */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x61 }, /* MPEG-2 Main */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x60 }, /* MPEG-2 Simple */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x62 }, /* MPEG-2 SNR */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x63 }, /* MPEG-2 Spatial */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x64 }, /* MPEG-2 High */
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{ AV_CODEC_ID_MPEG2VIDEO , 0x65 }, /* MPEG-2 422 */
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{ AV_CODEC_ID_AAC , 0x66 }, /* MPEG-2 AAC Main */
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{ AV_CODEC_ID_AAC , 0x67 }, /* MPEG-2 AAC Low */
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{ AV_CODEC_ID_AAC , 0x68 }, /* MPEG-2 AAC SSR */
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{ AV_CODEC_ID_MP3 , 0x69 }, /* 13818-3 */
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{ AV_CODEC_ID_MP2 , 0x69 }, /* 11172-3 */
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{ AV_CODEC_ID_MPEG1VIDEO , 0x6A }, /* 11172-2 */
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{ AV_CODEC_ID_MP3 , 0x6B }, /* 11172-3 */
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{ AV_CODEC_ID_MJPEG , 0x6C }, /* 10918-1 */
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{ AV_CODEC_ID_PNG , 0x6D },
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{ AV_CODEC_ID_JPEG2000 , 0x6E }, /* 15444-1 */
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{ AV_CODEC_ID_VC1 , 0xA3 },
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{ AV_CODEC_ID_DIRAC , 0xA4 },
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{ AV_CODEC_ID_AC3 , 0xA5 },
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{ AV_CODEC_ID_EAC3 , 0xA6 },
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{ AV_CODEC_ID_DTS , 0xA9 }, /* mp4ra.org */
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{ AV_CODEC_ID_OPUS , 0xAD }, /* mp4ra.org */
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{ AV_CODEC_ID_VP9 , 0xB1 }, /* mp4ra.org */
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{ AV_CODEC_ID_TSCC2 , 0xD0 }, /* nonstandard, camtasia uses it */
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{ AV_CODEC_ID_EVRC , 0xD1 }, /* nonstandard, pvAuthor uses it */
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{ AV_CODEC_ID_VORBIS , 0xDD }, /* nonstandard, gpac uses it */
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{ AV_CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* nonstandard, see unsupported-embedded-subs-2.mp4 */
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{ AV_CODEC_ID_QCELP , 0xE1 },
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{ AV_CODEC_ID_MPEG4SYSTEMS, 0x01 },
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{ AV_CODEC_ID_MPEG4SYSTEMS, 0x02 },
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{ AV_CODEC_ID_NONE , 0 },
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};
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const AVCodecTag ff_codec_movsubtitle_tags[] = {
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{ AV_CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
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{ AV_CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
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{ AV_CODEC_ID_EIA_608, MKTAG('c', '6', '0', '8') },
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{ AV_CODEC_ID_NONE, 0 },
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};
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const AVCodecTag ff_codec_movdata_tags[] = {
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{ AV_CODEC_ID_BIN_DATA, MKTAG('g', 'p', 'm', 'd') },
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{ AV_CODEC_ID_NONE, 0 },
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};
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/* map numeric codes from mdhd atom to ISO 639 */
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/* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
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/* http://developer.apple.com/documentation/mac/Text/Text-368.html */
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/* deprecated by putting the code as 3*5 bits ASCII */
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static const char mov_mdhd_language_map[][4] = {
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"eng", /* 0 English */
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"fra", /* 1 French */
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"ger", /* 2 German */
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"ita", /* 3 Italian */
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"dut", /* 4 Dutch */
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"sve", /* 5 Swedish */
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"spa", /* 6 Spanish */
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"dan", /* 7 Danish */
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"por", /* 8 Portuguese */
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"nor", /* 9 Norwegian */
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"heb", /* 10 Hebrew */
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"jpn", /* 11 Japanese */
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"ara", /* 12 Arabic */
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"fin", /* 13 Finnish */
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"gre", /* 14 Greek */
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"ice", /* 15 Icelandic */
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"mlt", /* 16 Maltese */
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"tur", /* 17 Turkish */
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"hr ", /* 18 Croatian */
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"chi", /* 19 Traditional Chinese */
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"urd", /* 20 Urdu */
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"hin", /* 21 Hindi */
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"tha", /* 22 Thai */
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"kor", /* 23 Korean */
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"lit", /* 24 Lithuanian */
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"pol", /* 25 Polish */
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"hun", /* 26 Hungarian */
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"est", /* 27 Estonian */
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"lav", /* 28 Latvian */
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"smi", /* 29 Sami */
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"fo ", /* 30 Faroese */
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"per", /* 31 Farsi */
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"rus", /* 32 Russian */
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"chi", /* 33 Simplified Chinese */
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"", /* 34 Flemish */
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"iri", /* 35 Irish */
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"alb", /* 36 Albanian */
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"ron", /* 37 Romanian */
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"ces", /* 38 Czech */
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"slk", /* 39 Slovak */
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"slv", /* 40 Slovenian */
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"yid", /* 41 Yiddish */
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"sr ", /* 42 Serbian */
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"mac", /* 43 Macedonian */
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"bul", /* 44 Bulgarian */
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"ukr", /* 45 Ukrainian */
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"bel", /* 46 Belarusian */
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"uzb", /* 47 Uzbek */
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"kaz", /* 48 Kazakh */
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"aze", /* 49 Azerbaijani */
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"aze", /* 50 AzerbaijanAr */
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"arm", /* 51 Armenian */
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"geo", /* 52 Georgian */
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"mol", /* 53 Moldavian */
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"kir", /* 54 Kirghiz */
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"tgk", /* 55 Tajiki */
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"tuk", /* 56 Turkmen */
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"mon", /* 57 Mongolian */
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"", /* 58 MongolianCyr */
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"pus", /* 59 Pashto */
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"kur", /* 60 Kurdish */
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"kas", /* 61 Kashmiri */
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"snd", /* 62 Sindhi */
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"tib", /* 63 Tibetan */
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"nep", /* 64 Nepali */
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"san", /* 65 Sanskrit */
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"mar", /* 66 Marathi */
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"ben", /* 67 Bengali */
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"asm", /* 68 Assamese */
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"guj", /* 69 Gujarati */
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"pa ", /* 70 Punjabi */
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"ori", /* 71 Oriya */
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"mal", /* 72 Malayalam */
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"kan", /* 73 Kannada */
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"tam", /* 74 Tamil */
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"tel", /* 75 Telugu */
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"sin", /* 76 Sinhala */
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"bur", /* 77 Burmese */
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"khm", /* 78 Khmer */
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"lao", /* 79 Lao */
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"vie", /* 80 Vietnamese */
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"ind", /* 81 Indonesian */
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"tgl", /* 82 Tagalog */
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"may", /* 83 MalayRoman */
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"may", /* 84 MalayArabic */
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"amh", /* 85 Amharic */
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"tir", /* 86 Galla */
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"orm", /* 87 Oromo */
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"som", /* 88 Somali */
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"swa", /* 89 Swahili */
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"kin", /* 90 Kinyarwanda */
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"run", /* 91 Rundi */
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"nya", /* 92 Nyanja */
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"mlg", /* 93 Malagasy */
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"epo", /* 94 Esperanto */
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"", /* 95 */
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"", /* 96 */
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"", /* 97 */
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"", /* 98 */
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"", /* 99 */
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"", /* 100 */
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"", /* 101 */
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"", /* 102 */
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"", /* 103 */
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"", /* 104 */
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"", /* 105 */
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"", /* 106 */
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"", /* 107 */
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"", /* 108 */
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"", /* 109 */
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"", /* 110 */
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"", /* 111 */
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"", /* 112 */
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"", /* 113 */
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"", /* 114 */
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"", /* 115 */
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"", /* 116 */
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"", /* 117 */
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"", /* 118 */
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"", /* 119 */
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"", /* 120 */
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"", /* 121 */
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"", /* 122 */
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"", /* 123 */
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"", /* 124 */
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"", /* 125 */
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"", /* 126 */
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"", /* 127 */
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"wel", /* 128 Welsh */
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"baq", /* 129 Basque */
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"cat", /* 130 Catalan */
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"lat", /* 131 Latin */
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"que", /* 132 Quechua */
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"grn", /* 133 Guarani */
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"aym", /* 134 Aymara */
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"tat", /* 135 Tatar */
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"uig", /* 136 Uighur */
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"dzo", /* 137 Dzongkha */
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"jav", /* 138 JavaneseRom */
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};
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int ff_mov_iso639_to_lang(const char lang[4], int mp4)
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{
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int i, code = 0;
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/* old way, only for QT? */
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for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
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if (!strcmp(lang, mov_mdhd_language_map[i]))
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return i;
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}
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/* XXX:can we do that in mov too? */
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if (!mp4)
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return -1;
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/* handle undefined as such */
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if (lang[0] == '\0')
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lang = "und";
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/* 5 bits ASCII */
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for (i = 0; i < 3; i++) {
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uint8_t c = lang[i];
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c -= 0x60;
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if (c > 0x1f)
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return -1;
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code <<= 5;
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code |= c;
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}
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return code;
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}
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int ff_mov_lang_to_iso639(unsigned code, char to[4])
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{
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int i;
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memset(to, 0, 4);
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/* is it the mangled iso code? */
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/* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
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if (code >= 0x400 && code != 0x7fff) {
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for (i = 2; i >= 0; i--) {
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to[i] = 0x60 + (code & 0x1f);
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code >>= 5;
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}
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return 1;
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}
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/* old fashion apple lang code */
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if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
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return 0;
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if (!mov_mdhd_language_map[code][0])
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return 0;
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memcpy(to, mov_mdhd_language_map[code], 4);
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return 1;
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}
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int ff_mp4_read_descr_len(AVIOContext *pb)
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{
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int len = 0;
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int count = 4;
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while (count--) {
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int c = avio_r8(pb);
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len = (len << 7) | (c & 0x7f);
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if (!(c & 0x80))
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break;
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}
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return len;
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}
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int ff_mp4_read_descr(void *logctx, AVIOContext *pb, int *tag)
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{
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int len;
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*tag = avio_r8(pb);
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len = ff_mp4_read_descr_len(pb);
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av_log(logctx, AV_LOG_TRACE, "MPEG-4 description: tag=0x%02x len=%d\n", *tag, len);
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return len;
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}
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void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
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{
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int flags;
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if (es_id) *es_id = avio_rb16(pb);
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else avio_rb16(pb);
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flags = avio_r8(pb);
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if (flags & 0x80) //streamDependenceFlag
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avio_rb16(pb);
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if (flags & 0x40) { //URL_Flag
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int len = avio_r8(pb);
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avio_skip(pb, len);
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}
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if (flags & 0x20) //OCRstreamFlag
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avio_rb16(pb);
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}
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static const AVCodecTag mp4_audio_types[] = {
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{ AV_CODEC_ID_MP3ON4, AOT_PS }, /* old mp3on4 draft */
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{ AV_CODEC_ID_MP3ON4, AOT_L1 }, /* layer 1 */
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{ AV_CODEC_ID_MP3ON4, AOT_L2 }, /* layer 2 */
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{ AV_CODEC_ID_MP3ON4, AOT_L3 }, /* layer 3 */
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{ AV_CODEC_ID_MP4ALS, AOT_ALS }, /* MPEG-4 ALS */
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{ AV_CODEC_ID_NONE, AOT_NULL },
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};
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int ff_mp4_read_dec_config_descr(void *logctx, AVStream *st, AVIOContext *pb)
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{
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enum AVCodecID codec_id;
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int len, tag;
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int ret;
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int object_type_id = avio_r8(pb);
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avio_r8(pb); /* stream type */
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avio_rb24(pb); /* buffer size db */
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avio_rb32(pb); /* rc_max_rate */
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st->codecpar->bit_rate = avio_rb32(pb); /* avg bitrate */
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codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
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if (codec_id)
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st->codecpar->codec_id = codec_id;
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av_log(logctx, AV_LOG_TRACE, "esds object type id 0x%02x\n", object_type_id);
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len = ff_mp4_read_descr(logctx, pb, &tag);
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if (tag == MP4DecSpecificDescrTag) {
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av_log(logctx, AV_LOG_TRACE, "Specific MPEG-4 header len=%d\n", len);
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/* As per 14496-3:2009 9.D.2.2, No decSpecificInfo is defined
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for MPEG-1 Audio or MPEG-2 Audio; MPEG-2 AAC excluded. */
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if (object_type_id == 0x69 || object_type_id == 0x6b)
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return 0;
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if (!len || (uint64_t)len > (1<<30))
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return AVERROR_INVALIDDATA;
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if ((ret = ff_get_extradata(logctx, st->codecpar, pb, len)) < 0)
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return ret;
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if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
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MPEG4AudioConfig cfg = {0};
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ret = avpriv_mpeg4audio_get_config2(&cfg, st->codecpar->extradata,
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st->codecpar->extradata_size, 1, logctx);
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if (ret < 0)
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return ret;
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if (cfg.channels != st->codecpar->ch_layout.nb_channels) {
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av_channel_layout_uninit(&st->codecpar->ch_layout);
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st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
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st->codecpar->ch_layout.nb_channels = cfg.channels;
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}
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if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
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st->codecpar->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
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else if (cfg.ext_sample_rate)
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st->codecpar->sample_rate = cfg.ext_sample_rate;
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else
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st->codecpar->sample_rate = cfg.sample_rate;
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av_log(logctx, AV_LOG_TRACE, "mp4a config channels %d obj %d ext obj %d "
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"sample rate %d ext sample rate %d\n", cfg.channels,
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cfg.object_type, cfg.ext_object_type,
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cfg.sample_rate, cfg.ext_sample_rate);
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if (!(st->codecpar->codec_id = ff_codec_get_id(mp4_audio_types,
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cfg.object_type)))
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st->codecpar->codec_id = AV_CODEC_ID_AAC;
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}
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}
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return 0;
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}
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typedef struct MovChannelLayout {
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int64_t channel_layout;
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uint32_t layout_tag;
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} MovChannelLayout;
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static const MovChannelLayout mov_channel_layout[] = {
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{ AV_CH_LAYOUT_MONO, (100<<16) | 1}, // kCAFChannelLayoutTag_Mono
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{ AV_CH_LAYOUT_STEREO, (101<<16) | 2}, // kCAFChannelLayoutTag_Stereo
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{ AV_CH_LAYOUT_STEREO, (102<<16) | 2}, // kCAFChannelLayoutTag_StereoHeadphones
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{ AV_CH_LAYOUT_2_1, (131<<16) | 3}, // kCAFChannelLayoutTag_ITU_2_1
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{ AV_CH_LAYOUT_QUAD, (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2
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{ AV_CH_LAYOUT_2_2, (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2
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{ AV_CH_LAYOUT_QUAD, (108<<16) | 4}, // kCAFChannelLayoutTag_Quadraphonic
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{ AV_CH_LAYOUT_SURROUND, (113<<16) | 3}, // kCAFChannelLayoutTag_MPEG_3_0_A
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{ AV_CH_LAYOUT_4POINT0, (115<<16) | 4}, // kCAFChannelLayoutTag_MPEG_4_0_A
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{ AV_CH_LAYOUT_5POINT0_BACK, (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A
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{ AV_CH_LAYOUT_5POINT0, (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A
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{ AV_CH_LAYOUT_5POINT1_BACK, (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A
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{ AV_CH_LAYOUT_5POINT1, (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A
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{ AV_CH_LAYOUT_7POINT1, (128<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_C
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{ AV_CH_LAYOUT_7POINT1_WIDE, (126<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_A
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{ AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, // kCAFChannelLayoutTag_SMPTE_DTV
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{ AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY, (133<<16) | 3}, // kCAFChannelLayoutTag_DVD_4
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{ AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY, (134<<16) | 4}, // kCAFChannelLayoutTag_DVD_5
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{ AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY, (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
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{ AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY, (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6
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{ AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY, (136<<16) | 4}, // kCAFChannelLayoutTag_DVD_10
|
|
{ AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY, (137<<16) | 5}, // kCAFChannelLayoutTag_DVD_11
|
|
{ 0, 0},
|
|
};
|
|
|
|
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
|
|
{
|
|
const MovChannelLayout *layouts;
|
|
uint32_t layout_tag = 0;
|
|
|
|
for (layouts = mov_channel_layout; layouts->channel_layout; layouts++)
|
|
if (channel_layout == layouts->channel_layout) {
|
|
layout_tag = layouts->layout_tag;
|
|
break;
|
|
}
|
|
|
|
if (layout_tag) {
|
|
avio_wb32(pb, layout_tag); // mChannelLayoutTag
|
|
avio_wb32(pb, 0); // mChannelBitmap
|
|
} else {
|
|
avio_wb32(pb, 0x10000); // kCAFChannelLayoutTag_UseChannelBitmap
|
|
avio_wb32(pb, channel_layout);
|
|
}
|
|
avio_wb32(pb, 0); // mNumberChannelDescriptions
|
|
}
|
|
|
|
static const struct MP4TrackKindValueMapping dash_role_map[] = {
|
|
{ AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_CAPTIONS,
|
|
"caption" },
|
|
{ AV_DISPOSITION_COMMENT,
|
|
"commentary" },
|
|
{ AV_DISPOSITION_VISUAL_IMPAIRED|AV_DISPOSITION_DESCRIPTIONS,
|
|
"description" },
|
|
{ AV_DISPOSITION_DUB,
|
|
"dub" },
|
|
{ AV_DISPOSITION_FORCED,
|
|
"forced-subtitle" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
const struct MP4TrackKindMapping ff_mov_track_kind_table[] = {
|
|
{ "urn:mpeg:dash:role:2011", dash_role_map },
|
|
{ 0, NULL }
|
|
};
|