mirror of https://git.videolan.org/git/ffmpeg.git
198 lines
8.7 KiB
C
198 lines
8.7 KiB
C
/*
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* Copyright (c) 2011 Justin Ruggles
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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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/**
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* mov 'chan' tag reading/writing.
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* @author Justin Ruggles
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*/
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#ifndef AVFORMAT_MOV_CHAN_H
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#define AVFORMAT_MOV_CHAN_H
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#include <stdint.h>
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#include "libavutil/channel_layout.h"
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#include "libavcodec/codec_id.h"
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#include "libavcodec/codec_par.h"
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#include "avformat.h"
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/**
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* Channel Layout Tag
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* This tells which channels are present in the audio stream and the order in
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* which they appear.
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*
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* @note We're using the channel layout tag to indicate channel order
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* when the value is greater than 0x10000. The Apple documentation has
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* some contradictions as to how this is actually supposed to be handled.
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*
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* Core Audio File Format Spec:
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* "The high 16 bits indicates a specific ordering of the channels."
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* Core Audio Data Types Reference:
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* "These identifiers specify the channels included in a layout but
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* do not specify a particular ordering of those channels."
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*/
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enum MovChannelLayoutTag {
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#define MOV_CH_LAYOUT_UNKNOWN 0xFFFF0000
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MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0,
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MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0,
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MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0,
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MOV_CH_LAYOUT_MONO = (100 << 16) | 1,
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MOV_CH_LAYOUT_STEREO = (101 << 16) | 2,
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MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2,
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MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2,
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MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2,
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MOV_CH_LAYOUT_XY = (105 << 16) | 2,
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MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2,
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MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4,
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MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4,
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MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5,
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MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6,
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MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8,
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MOV_CH_LAYOUT_CUBE = (112 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3,
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MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3,
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MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4,
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MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4,
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MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5,
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MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6,
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MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7,
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MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8,
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MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8,
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MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8,
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MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8,
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MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3,
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MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4,
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MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3,
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MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4,
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MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5,
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MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4,
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MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5,
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MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5,
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MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6,
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MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7,
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MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7,
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MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6,
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MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7,
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MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7,
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MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8,
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MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16,
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MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21,
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MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2,
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MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3,
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MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4,
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MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4,
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MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4,
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MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5,
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MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6,
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MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7,
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MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8,
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MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8,
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MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4,
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MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5,
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MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6,
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MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7,
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MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7,
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MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7,
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MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8,
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MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9,
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MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9,
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};
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/**
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* Get the channel layout tag for the specified codec id and channel layout.
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* If the layout tag was not found, use a channel bitmap if possible.
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*
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* @param[in] codec_id codec id
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* @param[in] channel_layout channel layout
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* @param[out] bitmap channel bitmap
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* @return channel layout tag
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*/
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int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
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uint32_t *layout,
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uint32_t *bitmap,
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uint32_t **pchannel_desc);
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/**
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* Read 'chan' tag from the input stream.
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*
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* @param s AVFormatContext
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* @param pb AVIOContext
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* @param st The stream to set codec values for
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* @param size Remaining size in the 'chan' tag
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* @return 0 if ok, or negative AVERROR code on failure
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*/
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int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
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int64_t size);
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/**
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* Get ISO/IEC 23001-8 ChannelConfiguration from AVChannelLayout.
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*
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*/
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int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config);
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/**
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* Get AVChannelLayout from ISO/IEC 23001-8 ChannelConfiguration.
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*
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* @return 1 if the config was unknown, layout is untouched in this case
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* 0 if the config was found
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* <0 on error
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*/
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int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map);
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/**
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* Get ISO/IEC 23001-8 OutputChannelPosition from AVChannelLayout.
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*/
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int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
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uint8_t *position, int position_num);
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/**
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* Read 'chnl' tag from the input stream.
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*
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* @param s AVFormatContext
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* @param pb AVIOContext
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* @param st The stream to set codec values for
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* @return 0 if ok, or negative AVERROR code on failure
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*/
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int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st);
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#endif /* AVFORMAT_MOV_CHAN_H */
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