isom.c File Reference

#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"

Go to the source code of this file.

Data Structures
struct	MovChannelLayout

Functions
int	ff_mov_iso639_to_lang (const char lang[4], int mp4)
int	ff_mov_lang_to_iso639 (unsigned code, char to[4])
int	ff_mp4_read_descr_len (AVIOContext *pb)
int	ff_mp4_read_descr (void *logctx, AVIOContext *pb, int *tag)
void	ff_mp4_parse_es_descr (AVIOContext *pb, int *es_id)
int	ff_mp4_read_dec_config_descr (void *logctx, AVStream *st, AVIOContext *pb)
void	ff_mov_write_chan (AVIOContext *pb, int64_t channel_layout)

Variables
const AVCodecTag	ff_mp4_obj_type []
const AVCodecTag	ff_codec_movsubtitle_tags []
const AVCodecTag	ff_codec_movdata_tags []
static const char	mov_mdhd_language_map [][4]
static const AVCodecTag	mp4_audio_types []
static const MovChannelLayout	mov_channel_layout []
static const struct MP4TrackKindValueMapping	dash_role_map []
const struct MP4TrackKindMapping	ff_mov_track_kind_table []

Function Documentation

ff_mov_iso639_to_lang()

int ff_mov_iso639_to_lang	(	const char	lang[4],
		int	mp4
	)

Definition at line 233 of file isom.c.

Referenced by get_metadata_lang(), mov_init(), and mov_write_string_data_tag().

ff_mov_lang_to_iso639()

int ff_mov_lang_to_iso639	(	unsigned	code,
		char	to[4]
	)

Definition at line 260 of file isom.c.

Referenced by mov_metadata_loci(), mov_read_mdhd(), and mov_read_udta_string().

ff_mp4_read_descr_len()

int ff_mp4_read_descr_len

(

AVIOContext *

pb

)

Definition at line 282 of file isom.c.

Referenced by ff_mp4_read_descr(), and read_pakt_chunk().

ff_mp4_read_descr()

int ff_mp4_read_descr	(	void *	logctx,
		AVIOContext *	pb,
		int *	tag
	)

Definition at line 295 of file isom.c.

Referenced by aac_decoder_config(), ff_mov_read_esds(), ff_mp4_read_dec_config_descr(), and parse_mp4_descr().

ff_mp4_parse_es_descr()

void ff_mp4_parse_es_descr	(	AVIOContext *	pb,
		int *	es_id
	)

Definition at line 304 of file isom.c.

Referenced by ff_mov_read_esds(), and parse_MP4ESDescrTag().

ff_mp4_read_dec_config_descr()

int ff_mp4_read_dec_config_descr	(	void *	logctx,
		AVStream *	st,
		AVIOContext *	pb
	)

Definition at line 329 of file isom.c.

Referenced by ff_mov_read_esds(), ff_parse_mpeg2_descriptor(), and m4sl_cb().

ff_mov_write_chan()

void ff_mov_write_chan	(	AVIOContext *	pb,
		int64_t	channel_layout
	)

Definition at line 414 of file isom.c.

Referenced by aiff_write_header(), and caf_write_header().

Variable Documentation

ff_mp4_obj_type

const AVCodecTag ff_mp4_obj_type[]

Definition at line 34 of file isom.c.

Referenced by aac_decoder_config(), ff_mp4_read_dec_config_descr(), mov_write_esds_tag(), and set_codec_str().

ff_codec_movsubtitle_tags

const AVCodecTag ff_codec_movsubtitle_tags[]

Initial value:

= {
    { 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 },
}

Definition at line 75 of file isom.c.

Referenced by mov_codec_id(), and mov_get_codec_tag().

ff_codec_movdata_tags

const AVCodecTag ff_codec_movdata_tags[]

Initial value:

= {
    { AV_CODEC_ID_BIN_DATA, MKTAG('g', 'p', 'm', 'd') },
    { AV_CODEC_ID_NONE, 0 },
}

Definition at line 82 of file isom.c.

Referenced by mov_codec_id().

mov_mdhd_language_map

const char mov_mdhd_language_map[][4]

static

Definition at line 91 of file isom.c.

Referenced by ff_mov_iso639_to_lang(), and ff_mov_lang_to_iso639().

mp4_audio_types

const AVCodecTag mp4_audio_types[]

static

Initial value:

= {
    { AV_CODEC_ID_MP3ON4, AOT_PS   }, 
    { AV_CODEC_ID_MP3ON4, AOT_L1   }, 
    { AV_CODEC_ID_MP3ON4, AOT_L2   }, 
    { AV_CODEC_ID_MP3ON4, AOT_L3   }, 
    { AV_CODEC_ID_MP4ALS, AOT_ALS  }, 
    { AV_CODEC_ID_NONE,   AOT_NULL },
}

Definition at line 320 of file isom.c.

Referenced by ff_mp4_read_dec_config_descr().

mov_channel_layout

const MovChannelLayout mov_channel_layout[]

static

Initial value:

= {
    { AV_CH_LAYOUT_MONO,                         (100<<16) | 1}, 
    { AV_CH_LAYOUT_STEREO,                       (101<<16) | 2}, 
    { AV_CH_LAYOUT_STEREO,                       (102<<16) | 2}, 
    { AV_CH_LAYOUT_2_1,                          (131<<16) | 3}, 
    { AV_CH_LAYOUT_QUAD,                         (132<<16) | 4}, 
    { AV_CH_LAYOUT_2_2,                          (132<<16) | 4}, 
    { AV_CH_LAYOUT_QUAD,                         (108<<16) | 4}, 
    { AV_CH_LAYOUT_SURROUND,                     (113<<16) | 3}, 
    { AV_CH_LAYOUT_4POINT0,                      (115<<16) | 4}, 
    { AV_CH_LAYOUT_5POINT0_BACK,                 (117<<16) | 5}, 
    { AV_CH_LAYOUT_5POINT0,                      (117<<16) | 5}, 
    { AV_CH_LAYOUT_5POINT1_BACK,                 (121<<16) | 6}, 
    { AV_CH_LAYOUT_5POINT1,                      (121<<16) | 6}, 
    { AV_CH_LAYOUT_7POINT1,                      (128<<16) | 8}, 
    { AV_CH_LAYOUT_7POINT1_WIDE,                 (126<<16) | 8}, 
    { AV_CH_LAYOUT_5POINT1_BACK|AV_CH_LAYOUT_STEREO_DOWNMIX, (130<<16) | 8}, 
    { AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,   (133<<16) | 3}, 
    { AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,      (134<<16) | 4}, 
    { AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,     (135<<16) | 4}, 
    { AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,      (135<<16) | 4}, 
    { AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY, (136<<16) | 4}, 
    { AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,  (137<<16) | 5}, 
    { 0, 0},
}

Definition at line 388 of file isom.c.

Referenced by ff_mov_write_chan().

dash_role_map

const struct MP4TrackKindValueMapping dash_role_map[]

static

Initial value:

= {
    { 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 }
}

Definition at line 435 of file isom.c.

ff_mov_track_kind_table

const struct MP4TrackKindMapping ff_mov_track_kind_table[]

Initial value:

= {
    { "urn:mpeg:dash:role:2011", dash_role_map },
    { 0, NULL }
}

Definition at line 449 of file isom.c.

Referenced by mov_read_kind(), and mov_write_track_kinds().