mov_chan.h File Reference

#include <stdint.h>
#include "libavutil/channel_layout.h"
#include "libavcodec/codec_id.h"
#include "libavcodec/codec_par.h"
#include "avformat.h"

Go to the source code of this file.

Macros
#define	MOV_CH_LAYOUT_UNKNOWN   0xFFFF0000

Enumerations
enum	MovChannelLayoutTag {   MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0, MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0, MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0, MOV_CH_LAYOUT_MONO = (100 << 16) | 1,   MOV_CH_LAYOUT_STEREO = (101 << 16) | 2, MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2, MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2, MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2,   MOV_CH_LAYOUT_XY = (105 << 16) | 2, MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2, MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4, MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4,   MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5, MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6, MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8, MOV_CH_LAYOUT_CUBE = (112 << 16) | 8,   MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3, MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3, MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4, MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4,   MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5, MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5, MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5, MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5,   MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6, MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6, MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6, MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6,   MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7, MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8, MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8, MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8,   MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8, MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8, MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3, MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4,   MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3, MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4, MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5, MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4,   MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5, MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5, MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6, MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7,   MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7, MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6, MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7, MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7,   MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8, MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16, MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21, MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2,   MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3, MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4, MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4, MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4,   MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5, MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6, MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7, MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7,   MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7, MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7, MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8, MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8,   MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8, MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8, MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8, MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8,   MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8, MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8, MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4, MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5,   MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6, MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6, MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6, MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7,   MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7, MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7, MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7, MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7,   MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8, MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8, MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8, MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9,   MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9 }
	mov 'chan' tag reading/writing. More...

Functions
int	ff_mov_get_channel_layout_tag (const AVCodecParameters *par, uint32_t *layout, uint32_t *bitmap, uint32_t **pchannel_desc)
	Get the channel layout tag for the specified codec id and channel layout. More...
int	ff_mov_read_chan (AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
	Read 'chan' tag from the input stream. More...
int	ff_mov_get_channel_config_from_layout (const AVChannelLayout *layout, int *config)
	Get ISO/IEC 23001-8 ChannelConfiguration from AVChannelLayout. More...
int	ff_mov_get_channel_layout_from_config (int config, AVChannelLayout *layout, uint64_t omitted_channel_map)
	Get AVChannelLayout from ISO/IEC 23001-8 ChannelConfiguration. More...
int	ff_mov_get_channel_positions_from_layout (const AVChannelLayout *layout, uint8_t *position, int position_num)
	Get ISO/IEC 23001-8 OutputChannelPosition from AVChannelLayout. More...
int	ff_mov_read_chnl (AVFormatContext *s, AVIOContext *pb, AVStream *st)
	Read 'chnl' tag from the input stream. More...

Macro Definition Documentation

MOV_CH_LAYOUT_UNKNOWN

#define MOV_CH_LAYOUT_UNKNOWN   0xFFFF0000

Definition at line 52 of file mov_chan.h.

Enumeration Type Documentation

MovChannelLayoutTag

enum MovChannelLayoutTag

mov 'chan' tag reading/writing.

Author

Justin Ruggles Channel Layout Tag This tells which channels are present in the audio stream and the order in which they appear.

Note

We're using the channel layout tag to indicate channel order when the value is greater than 0x10000. The Apple documentation has some contradictions as to how this is actually supposed to be handled.

Core Audio File Format Spec: "The high 16 bits indicates a specific ordering of the channels." Core Audio Data Types Reference: "These identifiers specify the channels included in a layout but do not specify a particular ordering of those channels."

Enumerator
MOV_CH_LAYOUT_USE_DESCRIPTIONS
MOV_CH_LAYOUT_USE_BITMAP
MOV_CH_LAYOUT_DISCRETEINORDER
MOV_CH_LAYOUT_MONO
MOV_CH_LAYOUT_STEREO
MOV_CH_LAYOUT_STEREOHEADPHONES
MOV_CH_LAYOUT_MATRIXSTEREO
MOV_CH_LAYOUT_MIDSIDE
MOV_CH_LAYOUT_XY
MOV_CH_LAYOUT_BINAURAL
MOV_CH_LAYOUT_AMBISONIC_B_FORMAT
MOV_CH_LAYOUT_QUADRAPHONIC
MOV_CH_LAYOUT_PENTAGONAL
MOV_CH_LAYOUT_HEXAGONAL
MOV_CH_LAYOUT_OCTAGONAL
MOV_CH_LAYOUT_CUBE
MOV_CH_LAYOUT_MPEG_3_0_A
MOV_CH_LAYOUT_MPEG_3_0_B
MOV_CH_LAYOUT_MPEG_4_0_A
MOV_CH_LAYOUT_MPEG_4_0_B
MOV_CH_LAYOUT_MPEG_5_0_A
MOV_CH_LAYOUT_MPEG_5_0_B
MOV_CH_LAYOUT_MPEG_5_0_C
MOV_CH_LAYOUT_MPEG_5_0_D
MOV_CH_LAYOUT_MPEG_5_1_A
MOV_CH_LAYOUT_MPEG_5_1_B
MOV_CH_LAYOUT_MPEG_5_1_C
MOV_CH_LAYOUT_MPEG_5_1_D
MOV_CH_LAYOUT_MPEG_6_1_A
MOV_CH_LAYOUT_MPEG_7_1_A
MOV_CH_LAYOUT_MPEG_7_1_B
MOV_CH_LAYOUT_MPEG_7_1_C
MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1
MOV_CH_LAYOUT_SMPTE_DTV
MOV_CH_LAYOUT_ITU_2_1
MOV_CH_LAYOUT_ITU_2_2
MOV_CH_LAYOUT_DVD_4
MOV_CH_LAYOUT_DVD_5
MOV_CH_LAYOUT_DVD_6
MOV_CH_LAYOUT_DVD_10
MOV_CH_LAYOUT_DVD_11
MOV_CH_LAYOUT_DVD_18
MOV_CH_LAYOUT_AUDIOUNIT_6_0
MOV_CH_LAYOUT_AUDIOUNIT_7_0
MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT
MOV_CH_LAYOUT_AAC_6_0
MOV_CH_LAYOUT_AAC_6_1
MOV_CH_LAYOUT_AAC_7_0
MOV_CH_LAYOUT_AAC_OCTAGONAL
MOV_CH_LAYOUT_TMH_10_2_STD
MOV_CH_LAYOUT_TMH_10_2_FULL
MOV_CH_LAYOUT_AC3_1_0_1
MOV_CH_LAYOUT_AC3_3_0
MOV_CH_LAYOUT_AC3_3_1
MOV_CH_LAYOUT_AC3_3_0_1
MOV_CH_LAYOUT_AC3_2_1_1
MOV_CH_LAYOUT_AC3_3_1_1
MOV_CH_LAYOUT_EAC3_6_0_A
MOV_CH_LAYOUT_EAC3_7_0_A
MOV_CH_LAYOUT_EAC3_6_1_A
MOV_CH_LAYOUT_EAC3_6_1_B
MOV_CH_LAYOUT_EAC3_6_1_C
MOV_CH_LAYOUT_EAC3_7_1_A
MOV_CH_LAYOUT_EAC3_7_1_B
MOV_CH_LAYOUT_EAC3_7_1_C
MOV_CH_LAYOUT_EAC3_7_1_D
MOV_CH_LAYOUT_EAC3_7_1_E
MOV_CH_LAYOUT_EAC3_7_1_F
MOV_CH_LAYOUT_EAC3_7_1_G
MOV_CH_LAYOUT_EAC3_7_1_H
MOV_CH_LAYOUT_DTS_3_1
MOV_CH_LAYOUT_DTS_4_1
MOV_CH_LAYOUT_DTS_6_0_A
MOV_CH_LAYOUT_DTS_6_0_B
MOV_CH_LAYOUT_DTS_6_0_C
MOV_CH_LAYOUT_DTS_6_1_A
MOV_CH_LAYOUT_DTS_6_1_B
MOV_CH_LAYOUT_DTS_6_1_C
MOV_CH_LAYOUT_DTS_6_1_D
MOV_CH_LAYOUT_DTS_7_0
MOV_CH_LAYOUT_DTS_7_1
MOV_CH_LAYOUT_DTS_8_0_A
MOV_CH_LAYOUT_DTS_8_0_B
MOV_CH_LAYOUT_DTS_8_1_A
MOV_CH_LAYOUT_DTS_8_1_B

Definition at line 51 of file mov_chan.h.

Function Documentation

ff_mov_get_channel_layout_tag()

int ff_mov_get_channel_layout_tag	(	const AVCodecParameters *	par,
		uint32_t *	layout,
		uint32_t *	bitmap,
		uint32_t **	pchannel_desc
	)

Get the channel layout tag for the specified codec id and channel layout.

If the layout tag was not found, use a channel bitmap if possible.

Parameters

[in]	codec_id	codec id
[in]	channel_layout	channel layout
[out]	bitmap	channel bitmap

Returns

channel layout tag

Definition at line 463 of file mov_chan.c.

Referenced by mov_write_chan_tag().

ff_mov_read_chan()

int ff_mov_read_chan	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVStream *	st,
		int64_t	size
	)

Read 'chan' tag from the input stream.

Parameters

s	AVFormatContext
pb	AVIOContext
st	The stream to set codec values for
size	Remaining size in the 'chan' tag

Returns

0 if ok, or negative AVERROR code on failure

Definition at line 524 of file mov_chan.c.

Referenced by aiff_read_header(), mov_read_chan(), and read_header().

ff_mov_get_channel_config_from_layout()

int ff_mov_get_channel_config_from_layout	(	const AVChannelLayout *	layout,
		int *	config
	)

Get ISO/IEC 23001-8 ChannelConfiguration from AVChannelLayout.

Definition at line 673 of file mov_chan.c.

Referenced by mov_write_chnl_tag().

ff_mov_get_channel_layout_from_config()

int ff_mov_get_channel_layout_from_config	(	int	config,
		AVChannelLayout *	layout,
		uint64_t	omitted_channel_map
	)

Get AVChannelLayout from ISO/IEC 23001-8 ChannelConfiguration.

Returns

1 if the config was unknown, layout is untouched in this case 0 if the config was found <0 on error

Definition at line 687 of file mov_chan.c.

Referenced by ff_mov_read_chnl().

ff_mov_get_channel_positions_from_layout()

int ff_mov_get_channel_positions_from_layout	(	const AVChannelLayout *	layout,
		uint8_t *	position,
		int	position_num
	)

Get ISO/IEC 23001-8 OutputChannelPosition from AVChannelLayout.

Definition at line 702 of file mov_chan.c.

Referenced by mov_write_chnl_tag().

ff_mov_read_chnl()

int ff_mov_read_chnl	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVStream *	st
	)

Read 'chnl' tag from the input stream.

Parameters

s	AVFormatContext
pb	AVIOContext
st	The stream to set codec values for

Returns

0 if ok, or negative AVERROR code on failure

Definition at line 729 of file mov_chan.c.

Referenced by mov_read_chnl().