| /* |
| * ISO Media common code |
| * Copyright (c) 2001 Fabrice Bellard |
| * Copyright (c) 2002 Francois Revol <revol@free.fr> |
| * Copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avformat.h" |
| #include "internal.h" |
| #include "isom.h" |
| #include "libavcodec/mpeg4audio.h" |
| #include "libavcodec/mpegaudiodata.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/intreadwrite.h" |
| |
| /* http://www.mp4ra.org */ |
| /* ordered by muxing preference */ |
| const AVCodecTag ff_mp4_obj_type[] = { |
| { AV_CODEC_ID_MOV_TEXT , 0x08 }, |
| { AV_CODEC_ID_MPEG4 , 0x20 }, |
| { AV_CODEC_ID_H264 , 0x21 }, |
| { AV_CODEC_ID_HEVC , 0x23 }, |
| { AV_CODEC_ID_AAC , 0x40 }, |
| { AV_CODEC_ID_MP4ALS , 0x40 }, /* 14496-3 ALS */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x61 }, /* MPEG-2 Main */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x60 }, /* MPEG-2 Simple */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x62 }, /* MPEG-2 SNR */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x63 }, /* MPEG-2 Spatial */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x64 }, /* MPEG-2 High */ |
| { AV_CODEC_ID_MPEG2VIDEO , 0x65 }, /* MPEG-2 422 */ |
| { AV_CODEC_ID_AAC , 0x66 }, /* MPEG-2 AAC Main */ |
| { AV_CODEC_ID_AAC , 0x67 }, /* MPEG-2 AAC Low */ |
| { AV_CODEC_ID_AAC , 0x68 }, /* MPEG-2 AAC SSR */ |
| { AV_CODEC_ID_MP3 , 0x69 }, /* 13818-3 */ |
| { AV_CODEC_ID_MP2 , 0x69 }, /* 11172-3 */ |
| { AV_CODEC_ID_MPEG1VIDEO , 0x6A }, /* 11172-2 */ |
| { AV_CODEC_ID_MP3 , 0x6B }, /* 11172-3 */ |
| { AV_CODEC_ID_MJPEG , 0x6C }, /* 10918-1 */ |
| { AV_CODEC_ID_PNG , 0x6D }, |
| { AV_CODEC_ID_JPEG2000 , 0x6E }, /* 15444-1 */ |
| { AV_CODEC_ID_VC1 , 0xA3 }, |
| { AV_CODEC_ID_DIRAC , 0xA4 }, |
| { AV_CODEC_ID_AC3 , 0xA5 }, |
| { AV_CODEC_ID_EAC3 , 0xA6 }, |
| { AV_CODEC_ID_DTS , 0xA9 }, /* mp4ra.org */ |
| { AV_CODEC_ID_OPUS , 0xAD }, /* mp4ra.org */ |
| { AV_CODEC_ID_VP9 , 0xB1 }, /* mp4ra.org */ |
| { AV_CODEC_ID_FLAC , 0xC1 }, /* nonstandard, update when there is a standard value */ |
| { AV_CODEC_ID_TSCC2 , 0xD0 }, /* nonstandard, camtasia uses it */ |
| { AV_CODEC_ID_EVRC , 0xD1 }, /* nonstandard, pvAuthor uses it */ |
| { AV_CODEC_ID_VORBIS , 0xDD }, /* nonstandard, gpac uses it */ |
| { AV_CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* nonstandard, see unsupported-embedded-subs-2.mp4 */ |
| { AV_CODEC_ID_QCELP , 0xE1 }, |
| { AV_CODEC_ID_MPEG4SYSTEMS, 0x01 }, |
| { AV_CODEC_ID_MPEG4SYSTEMS, 0x02 }, |
| { AV_CODEC_ID_NONE , 0 }, |
| }; |
| |
| const AVCodecTag ff_codec_movsubtitle_tags[] = { |
| { AV_CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') }, |
| { AV_CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') }, |
| { AV_CODEC_ID_EIA_608, MKTAG('c', '6', '0', '8') }, |
| { AV_CODEC_ID_NONE, 0 }, |
| }; |
| |
| const AVCodecTag ff_codec_movdata_tags[] = { |
| { AV_CODEC_ID_BIN_DATA, MKTAG('g', 'p', 'm', 'd') }, |
| { AV_CODEC_ID_NONE, 0 }, |
| }; |
| |
| /* map numeric codes from mdhd atom to ISO 639 */ |
| /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */ |
| /* http://developer.apple.com/documentation/mac/Text/Text-368.html */ |
| /* deprecated by putting the code as 3*5 bits ASCII */ |
| static const char mov_mdhd_language_map[][4] = { |
| "eng", /* 0 English */ |
| "fra", /* 1 French */ |
| "ger", /* 2 German */ |
| "ita", /* 3 Italian */ |
| "dut", /* 4 Dutch */ |
| "sve", /* 5 Swedish */ |
| "spa", /* 6 Spanish */ |
| "dan", /* 7 Danish */ |
| "por", /* 8 Portuguese */ |
| "nor", /* 9 Norwegian */ |
| "heb", /* 10 Hebrew */ |
| "jpn", /* 11 Japanese */ |
| "ara", /* 12 Arabic */ |
| "fin", /* 13 Finnish */ |
| "gre", /* 14 Greek */ |
| "ice", /* 15 Icelandic */ |
| "mlt", /* 16 Maltese */ |
| "tur", /* 17 Turkish */ |
| "hr ", /* 18 Croatian */ |
| "chi", /* 19 Traditional Chinese */ |
| "urd", /* 20 Urdu */ |
| "hin", /* 21 Hindi */ |
| "tha", /* 22 Thai */ |
| "kor", /* 23 Korean */ |
| "lit", /* 24 Lithuanian */ |
| "pol", /* 25 Polish */ |
| "hun", /* 26 Hungarian */ |
| "est", /* 27 Estonian */ |
| "lav", /* 28 Latvian */ |
| "", /* 29 Sami */ |
| "fo ", /* 30 Faroese */ |
| "", /* 31 Farsi */ |
| "rus", /* 32 Russian */ |
| "chi", /* 33 Simplified Chinese */ |
| "", /* 34 Flemish */ |
| "iri", /* 35 Irish */ |
| "alb", /* 36 Albanian */ |
| "ron", /* 37 Romanian */ |
| "ces", /* 38 Czech */ |
| "slk", /* 39 Slovak */ |
| "slv", /* 40 Slovenian */ |
| "yid", /* 41 Yiddish */ |
| "sr ", /* 42 Serbian */ |
| "mac", /* 43 Macedonian */ |
| "bul", /* 44 Bulgarian */ |
| "ukr", /* 45 Ukrainian */ |
| "bel", /* 46 Belarusian */ |
| "uzb", /* 47 Uzbek */ |
| "kaz", /* 48 Kazakh */ |
| "aze", /* 49 Azerbaijani */ |
| "aze", /* 50 AzerbaijanAr */ |
| "arm", /* 51 Armenian */ |
| "geo", /* 52 Georgian */ |
| "mol", /* 53 Moldavian */ |
| "kir", /* 54 Kirghiz */ |
| "tgk", /* 55 Tajiki */ |
| "tuk", /* 56 Turkmen */ |
| "mon", /* 57 Mongolian */ |
| "", /* 58 MongolianCyr */ |
| "pus", /* 59 Pashto */ |
| "kur", /* 60 Kurdish */ |
| "kas", /* 61 Kashmiri */ |
| "snd", /* 62 Sindhi */ |
| "tib", /* 63 Tibetan */ |
| "nep", /* 64 Nepali */ |
| "san", /* 65 Sanskrit */ |
| "mar", /* 66 Marathi */ |
| "ben", /* 67 Bengali */ |
| "asm", /* 68 Assamese */ |
| "guj", /* 69 Gujarati */ |
| "pa ", /* 70 Punjabi */ |
| "ori", /* 71 Oriya */ |
| "mal", /* 72 Malayalam */ |
| "kan", /* 73 Kannada */ |
| "tam", /* 74 Tamil */ |
| "tel", /* 75 Telugu */ |
| "", /* 76 Sinhala */ |
| "bur", /* 77 Burmese */ |
| "khm", /* 78 Khmer */ |
| "lao", /* 79 Lao */ |
| "vie", /* 80 Vietnamese */ |
| "ind", /* 81 Indonesian */ |
| "tgl", /* 82 Tagalog */ |
| "may", /* 83 MalayRoman */ |
| "may", /* 84 MalayArabic */ |
| "amh", /* 85 Amharic */ |
| "tir", /* 86 Galla */ |
| "orm", /* 87 Oromo */ |
| "som", /* 88 Somali */ |
| "swa", /* 89 Swahili */ |
| "", /* 90 Kinyarwanda */ |
| "run", /* 91 Rundi */ |
| "", /* 92 Nyanja */ |
| "mlg", /* 93 Malagasy */ |
| "epo", /* 94 Esperanto */ |
| "", /* 95 */ |
| "", /* 96 */ |
| "", /* 97 */ |
| "", /* 98 */ |
| "", /* 99 */ |
| "", /* 100 */ |
| "", /* 101 */ |
| "", /* 102 */ |
| "", /* 103 */ |
| "", /* 104 */ |
| "", /* 105 */ |
| "", /* 106 */ |
| "", /* 107 */ |
| "", /* 108 */ |
| "", /* 109 */ |
| "", /* 110 */ |
| "", /* 111 */ |
| "", /* 112 */ |
| "", /* 113 */ |
| "", /* 114 */ |
| "", /* 115 */ |
| "", /* 116 */ |
| "", /* 117 */ |
| "", /* 118 */ |
| "", /* 119 */ |
| "", /* 120 */ |
| "", /* 121 */ |
| "", /* 122 */ |
| "", /* 123 */ |
| "", /* 124 */ |
| "", /* 125 */ |
| "", /* 126 */ |
| "", /* 127 */ |
| "wel", /* 128 Welsh */ |
| "baq", /* 129 Basque */ |
| "cat", /* 130 Catalan */ |
| "lat", /* 131 Latin */ |
| "que", /* 132 Quechua */ |
| "grn", /* 133 Guarani */ |
| "aym", /* 134 Aymara */ |
| "tat", /* 135 Tatar */ |
| "uig", /* 136 Uighur */ |
| "dzo", /* 137 Dzongkha */ |
| "jav", /* 138 JavaneseRom */ |
| }; |
| |
| int ff_mov_iso639_to_lang(const char lang[4], int mp4) |
| { |
| int i, code = 0; |
| |
| /* old way, only for QT? */ |
| for (i = 0; lang[0] && !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) { |
| if (!strcmp(lang, mov_mdhd_language_map[i])) |
| return i; |
| } |
| /* XXX:can we do that in mov too? */ |
| if (!mp4) |
| return -1; |
| /* handle undefined as such */ |
| if (lang[0] == '\0') |
| lang = "und"; |
| /* 5 bits ASCII */ |
| for (i = 0; i < 3; i++) { |
| uint8_t c = lang[i]; |
| c -= 0x60; |
| if (c > 0x1f) |
| return -1; |
| code <<= 5; |
| code |= c; |
| } |
| return code; |
| } |
| |
| int ff_mov_lang_to_iso639(unsigned code, char to[4]) |
| { |
| int i; |
| memset(to, 0, 4); |
| /* is it the mangled iso code? */ |
| /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */ |
| if (code >= 0x400 && code != 0x7fff) { |
| for (i = 2; i >= 0; i--) { |
| to[i] = 0x60 + (code & 0x1f); |
| code >>= 5; |
| } |
| return 1; |
| } |
| /* old fashion apple lang code */ |
| if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map)) |
| return 0; |
| if (!mov_mdhd_language_map[code][0]) |
| return 0; |
| memcpy(to, mov_mdhd_language_map[code], 4); |
| return 1; |
| } |
| |
| int ff_mp4_read_descr_len(AVIOContext *pb) |
| { |
| int len = 0; |
| int count = 4; |
| while (count--) { |
| int c = avio_r8(pb); |
| len = (len << 7) | (c & 0x7f); |
| if (!(c & 0x80)) |
| break; |
| } |
| return len; |
| } |
| |
| int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag) |
| { |
| int len; |
| *tag = avio_r8(pb); |
| len = ff_mp4_read_descr_len(pb); |
| av_log(fc, AV_LOG_TRACE, "MPEG-4 description: tag=0x%02x len=%d\n", *tag, len); |
| return len; |
| } |
| |
| void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id) |
| { |
| int flags; |
| if (es_id) *es_id = avio_rb16(pb); |
| else avio_rb16(pb); |
| flags = avio_r8(pb); |
| if (flags & 0x80) //streamDependenceFlag |
| avio_rb16(pb); |
| if (flags & 0x40) { //URL_Flag |
| int len = avio_r8(pb); |
| avio_skip(pb, len); |
| } |
| if (flags & 0x20) //OCRstreamFlag |
| avio_rb16(pb); |
| } |
| |
| static const AVCodecTag mp4_audio_types[] = { |
| { AV_CODEC_ID_MP3ON4, AOT_PS }, /* old mp3on4 draft */ |
| { AV_CODEC_ID_MP3ON4, AOT_L1 }, /* layer 1 */ |
| { AV_CODEC_ID_MP3ON4, AOT_L2 }, /* layer 2 */ |
| { AV_CODEC_ID_MP3ON4, AOT_L3 }, /* layer 3 */ |
| { AV_CODEC_ID_MP4ALS, AOT_ALS }, /* MPEG-4 ALS */ |
| { AV_CODEC_ID_NONE, AOT_NULL }, |
| }; |
| |
| int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb) |
| { |
| enum AVCodecID codec_id; |
| unsigned v; |
| int len, tag; |
| int ret; |
| int object_type_id = avio_r8(pb); |
| avio_r8(pb); /* stream type */ |
| avio_rb24(pb); /* buffer size db */ |
| |
| v = avio_rb32(pb); |
| |
| // TODO: fix this with codecpar |
| #if FF_API_LAVF_AVCTX |
| FF_DISABLE_DEPRECATION_WARNINGS |
| if (v < INT32_MAX) |
| st->codec->rc_max_rate = v; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| st->codecpar->bit_rate = avio_rb32(pb); /* avg bitrate */ |
| |
| codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id); |
| if (codec_id) |
| st->codecpar->codec_id = codec_id; |
| av_log(fc, AV_LOG_TRACE, "esds object type id 0x%02x\n", object_type_id); |
| len = ff_mp4_read_descr(fc, pb, &tag); |
| if (tag == MP4DecSpecificDescrTag) { |
| av_log(fc, AV_LOG_TRACE, "Specific MPEG-4 header len=%d\n", len); |
| /* As per 14496-3:2009 9.D.2.2, No decSpecificInfo is defined |
| for MPEG-1 Audio or MPEG-2 Audio; MPEG-2 AAC excluded. */ |
| if (object_type_id == 0x69 || object_type_id == 0x6b) |
| return 0; |
| if (!len || (uint64_t)len > (1<<30)) |
| return AVERROR_INVALIDDATA; |
| if ((ret = ff_get_extradata(fc, st->codecpar, pb, len)) < 0) |
| return ret; |
| if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
| MPEG4AudioConfig cfg = {0}; |
| ret = avpriv_mpeg4audio_get_config2(&cfg, st->codecpar->extradata, |
| st->codecpar->extradata_size, 1, fc); |
| if (ret < 0) |
| return ret; |
| st->codecpar->channels = cfg.channels; |
| if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4 |
| st->codecpar->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index]; |
| else if (cfg.ext_sample_rate) |
| st->codecpar->sample_rate = cfg.ext_sample_rate; |
| else |
| st->codecpar->sample_rate = cfg.sample_rate; |
| av_log(fc, AV_LOG_TRACE, "mp4a config channels %d obj %d ext obj %d " |
| "sample rate %d ext sample rate %d\n", st->codecpar->channels, |
| cfg.object_type, cfg.ext_object_type, |
| cfg.sample_rate, cfg.ext_sample_rate); |
| if (!(st->codecpar->codec_id = ff_codec_get_id(mp4_audio_types, |
| cfg.object_type))) |
| st->codecpar->codec_id = AV_CODEC_ID_AAC; |
| } |
| } |
| return 0; |
| } |
| |
| typedef struct MovChannelLayout { |
| int64_t channel_layout; |
| uint32_t layout_tag; |
| } MovChannelLayout; |
| |
| static const MovChannelLayout mov_channel_layout[] = { |
| { AV_CH_LAYOUT_MONO, (100<<16) | 1}, // kCAFChannelLayoutTag_Mono |
| { AV_CH_LAYOUT_STEREO, (101<<16) | 2}, // kCAFChannelLayoutTag_Stereo |
| { AV_CH_LAYOUT_STEREO, (102<<16) | 2}, // kCAFChannelLayoutTag_StereoHeadphones |
| { AV_CH_LAYOUT_2_1, (131<<16) | 3}, // kCAFChannelLayoutTag_ITU_2_1 |
| { AV_CH_LAYOUT_QUAD, (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2 |
| { AV_CH_LAYOUT_2_2, (132<<16) | 4}, // kCAFChannelLayoutTag_ITU_2_2 |
| { AV_CH_LAYOUT_QUAD, (108<<16) | 4}, // kCAFChannelLayoutTag_Quadraphonic |
| { AV_CH_LAYOUT_SURROUND, (113<<16) | 3}, // kCAFChannelLayoutTag_MPEG_3_0_A |
| { AV_CH_LAYOUT_4POINT0, (115<<16) | 4}, // kCAFChannelLayoutTag_MPEG_4_0_A |
| { AV_CH_LAYOUT_5POINT0_BACK, (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A |
| { AV_CH_LAYOUT_5POINT0, (117<<16) | 5}, // kCAFChannelLayoutTag_MPEG_5_0_A |
| { AV_CH_LAYOUT_5POINT1_BACK, (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A |
| { AV_CH_LAYOUT_5POINT1, (121<<16) | 6}, // kCAFChannelLayoutTag_MPEG_5_1_A |
| { AV_CH_LAYOUT_7POINT1, (128<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_C |
| { AV_CH_LAYOUT_7POINT1_WIDE, (126<<16) | 8}, // kCAFChannelLayoutTag_MPEG_7_1_A |
| { AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, // kCAFChannelLayoutTag_SMPTE_DTV |
| { AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY, (133<<16) | 3}, // kCAFChannelLayoutTag_DVD_4 |
| { AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY, (134<<16) | 4}, // kCAFChannelLayoutTag_DVD_5 |
| { AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY, (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6 |
| { AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY, (135<<16) | 4}, // kCAFChannelLayoutTag_DVD_6 |
| { 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 |
| } |