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FFmpeg/libavformat/isom.c
Martijn van Beurden ed07ba641a avformat/movenc: Remove experimental status of flac-in-MP4 muxing
The fLaC and dfLa box IDs have been registered with the MP4 RA
(they are now listed at https://mp4ra.org/#/codecs) and support
for muxing FLAC in MP4 has been experimental in ffmpeg for
6 years now, since Nov 21, 2016

This patch removes the experimental status and removes the MP4
object type, as none has been registered for FLAC as it was not
deemed necessary.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2022-08-08 16:19:38 +02:00

451 lines
16 KiB
C

/*
* 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 "demux.h"
#include "internal.h"
#include "isom.h"
#include "libavcodec/mpeg4audio.h"
#include "libavcodec/mpegaudiodata.h"
#include "libavutil/channel_layout.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_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 */
"smi", /* 29 Sami */
"fo ", /* 30 Faroese */
"per", /* 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 */
"sin", /* 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 */
"kin", /* 90 Kinyarwanda */
"run", /* 91 Rundi */
"nya", /* 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;
int len, tag;
int ret;
int object_type_id = avio_r8(pb);
avio_r8(pb); /* stream type */
avio_rb24(pb); /* buffer size db */
avio_rb32(pb); /* rc_max_rate */
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->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
st->codecpar->ch_layout.nb_channels = cfg.channels;
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
st->codecpar->sample_rate = ff_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", cfg.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
}
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 }
};