2 * Copyright (c) 2011 Justin Ruggles
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 * mov 'chan' tag reading/writing.
23 * @author Justin Ruggles
26 #ifndef AVFORMAT_MOV_CHAN_H
27 #define AVFORMAT_MOV_CHAN_H
31 #include "libavutil/channel_layout.h"
32 #include "libavcodec/codec_id.h"
33 #include "libavcodec/codec_par.h"
38 * This tells which channels are present in the audio stream and the order in
41 * @note We're using the channel layout tag to indicate channel order
42 * when the value is greater than 0x10000. The Apple documentation has
43 * some contradictions as to how this is actually supposed to be handled.
45 * Core Audio File Format Spec:
46 * "The high 16 bits indicates a specific ordering of the channels."
47 * Core Audio Data Types Reference:
48 * "These identifiers specify the channels included in a layout but
49 * do not specify a particular ordering of those channels."
51 enum MovChannelLayoutTag {
52 #define MOV_CH_LAYOUT_UNKNOWN 0xFFFF0000
53 MOV_CH_LAYOUT_USE_DESCRIPTIONS = ( 0 << 16) | 0,
54 MOV_CH_LAYOUT_USE_BITMAP = ( 1 << 16) | 0,
55 MOV_CH_LAYOUT_DISCRETEINORDER = (147 << 16) | 0,
56 MOV_CH_LAYOUT_MONO = (100 << 16) | 1,
57 MOV_CH_LAYOUT_STEREO = (101 << 16) | 2,
58 MOV_CH_LAYOUT_STEREOHEADPHONES = (102 << 16) | 2,
59 MOV_CH_LAYOUT_MATRIXSTEREO = (103 << 16) | 2,
60 MOV_CH_LAYOUT_MIDSIDE = (104 << 16) | 2,
61 MOV_CH_LAYOUT_XY = (105 << 16) | 2,
62 MOV_CH_LAYOUT_BINAURAL = (106 << 16) | 2,
63 MOV_CH_LAYOUT_AMBISONIC_B_FORMAT = (107 << 16) | 4,
64 MOV_CH_LAYOUT_QUADRAPHONIC = (108 << 16) | 4,
65 MOV_CH_LAYOUT_PENTAGONAL = (109 << 16) | 5,
66 MOV_CH_LAYOUT_HEXAGONAL = (110 << 16) | 6,
67 MOV_CH_LAYOUT_OCTAGONAL = (111 << 16) | 8,
68 MOV_CH_LAYOUT_CUBE = (112 << 16) | 8,
69 MOV_CH_LAYOUT_MPEG_3_0_A = (113 << 16) | 3,
70 MOV_CH_LAYOUT_MPEG_3_0_B = (114 << 16) | 3,
71 MOV_CH_LAYOUT_MPEG_4_0_A = (115 << 16) | 4,
72 MOV_CH_LAYOUT_MPEG_4_0_B = (116 << 16) | 4,
73 MOV_CH_LAYOUT_MPEG_5_0_A = (117 << 16) | 5,
74 MOV_CH_LAYOUT_MPEG_5_0_B = (118 << 16) | 5,
75 MOV_CH_LAYOUT_MPEG_5_0_C = (119 << 16) | 5,
76 MOV_CH_LAYOUT_MPEG_5_0_D = (120 << 16) | 5,
77 MOV_CH_LAYOUT_MPEG_5_1_A = (121 << 16) | 6,
78 MOV_CH_LAYOUT_MPEG_5_1_B = (122 << 16) | 6,
79 MOV_CH_LAYOUT_MPEG_5_1_C = (123 << 16) | 6,
80 MOV_CH_LAYOUT_MPEG_5_1_D = (124 << 16) | 6,
81 MOV_CH_LAYOUT_MPEG_6_1_A = (125 << 16) | 7,
82 MOV_CH_LAYOUT_MPEG_7_1_A = (126 << 16) | 8,
83 MOV_CH_LAYOUT_MPEG_7_1_B = (127 << 16) | 8,
84 MOV_CH_LAYOUT_MPEG_7_1_C = (128 << 16) | 8,
85 MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1 = (129 << 16) | 8,
86 MOV_CH_LAYOUT_SMPTE_DTV = (130 << 16) | 8,
87 MOV_CH_LAYOUT_ITU_2_1 = (131 << 16) | 3,
88 MOV_CH_LAYOUT_ITU_2_2 = (132 << 16) | 4,
89 MOV_CH_LAYOUT_DVD_4 = (133 << 16) | 3,
90 MOV_CH_LAYOUT_DVD_5 = (134 << 16) | 4,
91 MOV_CH_LAYOUT_DVD_6 = (135 << 16) | 5,
92 MOV_CH_LAYOUT_DVD_10 = (136 << 16) | 4,
93 MOV_CH_LAYOUT_DVD_11 = (137 << 16) | 5,
94 MOV_CH_LAYOUT_DVD_18 = (138 << 16) | 5,
95 MOV_CH_LAYOUT_AUDIOUNIT_6_0 = (139 << 16) | 6,
96 MOV_CH_LAYOUT_AUDIOUNIT_7_0 = (140 << 16) | 7,
97 MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT = (148 << 16) | 7,
98 MOV_CH_LAYOUT_AAC_6_0 = (141 << 16) | 6,
99 MOV_CH_LAYOUT_AAC_6_1 = (142 << 16) | 7,
100 MOV_CH_LAYOUT_AAC_7_0 = (143 << 16) | 7,
101 MOV_CH_LAYOUT_AAC_OCTAGONAL = (144 << 16) | 8,
102 MOV_CH_LAYOUT_TMH_10_2_STD = (145 << 16) | 16,
103 MOV_CH_LAYOUT_TMH_10_2_FULL = (146 << 16) | 21,
104 MOV_CH_LAYOUT_AC3_1_0_1 = (149 << 16) | 2,
105 MOV_CH_LAYOUT_AC3_3_0 = (150 << 16) | 3,
106 MOV_CH_LAYOUT_AC3_3_1 = (151 << 16) | 4,
107 MOV_CH_LAYOUT_AC3_3_0_1 = (152 << 16) | 4,
108 MOV_CH_LAYOUT_AC3_2_1_1 = (153 << 16) | 4,
109 MOV_CH_LAYOUT_AC3_3_1_1 = (154 << 16) | 5,
110 MOV_CH_LAYOUT_EAC3_6_0_A = (155 << 16) | 6,
111 MOV_CH_LAYOUT_EAC3_7_0_A = (156 << 16) | 7,
112 MOV_CH_LAYOUT_EAC3_6_1_A = (157 << 16) | 7,
113 MOV_CH_LAYOUT_EAC3_6_1_B = (158 << 16) | 7,
114 MOV_CH_LAYOUT_EAC3_6_1_C = (159 << 16) | 7,
115 MOV_CH_LAYOUT_EAC3_7_1_A = (160 << 16) | 8,
116 MOV_CH_LAYOUT_EAC3_7_1_B = (161 << 16) | 8,
117 MOV_CH_LAYOUT_EAC3_7_1_C = (162 << 16) | 8,
118 MOV_CH_LAYOUT_EAC3_7_1_D = (163 << 16) | 8,
119 MOV_CH_LAYOUT_EAC3_7_1_E = (164 << 16) | 8,
120 MOV_CH_LAYOUT_EAC3_7_1_F = (165 << 16) | 8,
121 MOV_CH_LAYOUT_EAC3_7_1_G = (166 << 16) | 8,
122 MOV_CH_LAYOUT_EAC3_7_1_H = (167 << 16) | 8,
123 MOV_CH_LAYOUT_DTS_3_1 = (168 << 16) | 4,
124 MOV_CH_LAYOUT_DTS_4_1 = (169 << 16) | 5,
125 MOV_CH_LAYOUT_DTS_6_0_A = (170 << 16) | 6,
126 MOV_CH_LAYOUT_DTS_6_0_B = (171 << 16) | 6,
127 MOV_CH_LAYOUT_DTS_6_0_C = (172 << 16) | 6,
128 MOV_CH_LAYOUT_DTS_6_1_A = (173 << 16) | 7,
129 MOV_CH_LAYOUT_DTS_6_1_B = (174 << 16) | 7,
130 MOV_CH_LAYOUT_DTS_6_1_C = (175 << 16) | 7,
131 MOV_CH_LAYOUT_DTS_6_1_D = (182 << 16) | 7,
132 MOV_CH_LAYOUT_DTS_7_0 = (176 << 16) | 7,
133 MOV_CH_LAYOUT_DTS_7_1 = (177 << 16) | 8,
134 MOV_CH_LAYOUT_DTS_8_0_A = (178 << 16) | 8,
135 MOV_CH_LAYOUT_DTS_8_0_B = (179 << 16) | 8,
136 MOV_CH_LAYOUT_DTS_8_1_A = (180 << 16) | 9,
137 MOV_CH_LAYOUT_DTS_8_1_B = (181 << 16) | 9,
141 * Get the channel layout tag for the specified codec id and channel layout.
142 * If the layout tag was not found, use a channel bitmap if possible.
144 * @param[in] codec_id codec id
145 * @param[in] channel_layout channel layout
146 * @param[out] bitmap channel bitmap
147 * @return channel layout tag
149 int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
152 uint32_t **pchannel_desc);
155 * Read 'chan' tag from the input stream.
157 * @param s AVFormatContext
158 * @param pb AVIOContext
159 * @param st The stream to set codec values for
160 * @param size Remaining size in the 'chan' tag
161 * @return 0 if ok, or negative AVERROR code on failure
163 int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
167 * Get ISO/IEC 23001-8 ChannelConfiguration from AVChannelLayout.
170 int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config);
173 * Get AVChannelLayout from ISO/IEC 23001-8 ChannelConfiguration.
175 * @return 0 for success, -1 for doesn't match, layout is untouched on failure
178 int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout);
181 * Get ISO/IEC 23001-8 OutputChannelPosition from AVChannelLayout.
183 int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
184 uint8_t *position, int position_num);
187 * Get AVChannelLayout from ISO/IEC 23001-8 OutputChannelPosition.
189 int ff_mov_get_layout_from_channel_positions(const uint8_t *position, int position_num,
190 AVChannelLayout *layout);
192 #endif /* AVFORMAT_MOV_CHAN_H */