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FFmpeg/libavformat/mov_chan.c

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mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
/*
* Copyright (c) 2011 Justin Ruggles
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* mov 'chan' tag reading/writing.
* @author Justin Ruggles
*/
#include <stdint.h>
Include libavutil/channel_layout.h instead of libavutil/audioconvert.h Also reorder some other #include when applicable.
12 years ago
#include "libavutil/channel_layout.h"
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
#include "libavcodec/avcodec.h"
#include "mov_chan.h"
/**
* 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."
*/
enum MovChannelLayoutTag {
MOV_CH_LAYOUT_UNKNOWN = 0xFFFF0000,
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,
};
struct MovChannelLayoutMap {
uint32_t tag;
uint64_t layout;
};
static const struct MovChannelLayoutMap mov_ch_layout_map_misc[] = {
{ MOV_CH_LAYOUT_USE_DESCRIPTIONS, 0 },
{ MOV_CH_LAYOUT_USE_BITMAP, 0 },
{ MOV_CH_LAYOUT_DISCRETEINORDER, 0 },
{ MOV_CH_LAYOUT_UNKNOWN, 0 },
{ MOV_CH_LAYOUT_TMH_10_2_STD, 0 }, // L, R, C, Vhc, Lsd, Rsd,
// Ls, Rs, Vhl, Vhr, Lw, Rw,
// Csd, Cs, LFE1, LFE2
{ MOV_CH_LAYOUT_TMH_10_2_FULL, 0 }, // L, R, C, Vhc, Lsd, Rsd,
// Ls, Rs, Vhl, Vhr, Lw, Rw,
// Csd, Cs, LFE1, LFE2, Lc, Rc,
// HI, VI, Haptic
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = {
{ MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, // C
mov: Add missing terminator to mov_ch_layout_map_1ch. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: Libav-stable@libav.org
13 years ago
{ 0, 0 },
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
};
static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = {
{ MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, // L, R
{ MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, // L, R
{ MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, // L, R
{ MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, // C, sides
{ MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, // X (left), Y (right)
{ MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, // Lt, Rt
{ MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | // C, LFE
AV_CH_LOW_FREQUENCY },
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = {
{ MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, // L, R, C
{ MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, // C, L, R
{ MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, // L, C, R
{ MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, // L, R, Cs
{ MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, // L, R, LFE
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = {
{ MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, // W, X, Y, Z
{ MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, // L, R, Rls, Rrs
{ MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, // L, R, C, Cs
{ MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, // C, L, R, Cs
{ MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, // L, C, R, Cs
{ MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, // L, R, Ls, Rs
{ MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | // L, R, LFE, Cs
AV_CH_LOW_FREQUENCY },
{ MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | // L, R, Cs, LFE
AV_CH_LOW_FREQUENCY },
{ MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, // L, R, C, LFE
{ MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, // L, C, R, LFE
{ MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, // C, L, R, LFE
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = {
{ MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, // L, R, Rls, Rrs, C
{ MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, // L, R, C, Ls, Rs
{ MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, // L, R, Ls, Rs, C
{ MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, // L, C, R, Ls, Rs
{ MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, // C, L, R, Ls, Rs
{ MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | // L, R, LFE, Ls, Rs
AV_CH_LOW_FREQUENCY },
{ MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | // L, R, Ls, Rs, LFE
AV_CH_LOW_FREQUENCY },
{ MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, // L, R, C, LFE, Cs
{ MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, // L, C, R, Cs, LFE
{ MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, // C, L, R, Cs, LFE
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = {
{ MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, // L, R, Rls, Rrs, C, Cs
{ MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, // C, Cs, L, R, Rls, Rrs
{ MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, // L, R, C, LFE, Ls, Rs
{ MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, // L, R, Ls, Rs, C, LFE
{ MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, // L, C, R, Ls, Rs, LFE
{ MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, // C, L, R, Ls, Rs, LFE
{ MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, // L, R, Ls, Rs, C, Cs
{ MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, // C, L, R, Ls, Rs, Cs
{ MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, // L, C, R, Ls, Rs, Cs
{ MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, // Lc, Rc, L, R, Ls, Rs
{ MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | // C, L, R, Rls, Rrs, Ts
AV_CH_TOP_CENTER },
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = {
{ MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, R, C, LFE, Ls, Rs, Cs
{ MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, Cs, LFE
{ MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, // L, C, R, Ls, Rs, LFE, Cs
{ MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, // C, L, R, Ls, Rs, LFE, Cs
{ MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, // L, R, Ls, Rs, C, Rls, Rrs
{ MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, // C, L, R, Ls, Rs, Rls, Rrs
{ MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, // L, C, R, Ls, Rs, Rls, Rrs
{ MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, // L, R, Ls, Rs, C, Lc, Rc
{ MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, // Lc, C, Rc, L, R, Ls, Rs
{ MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts
AV_CH_TOP_CENTER },
{ MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhc
AV_CH_TOP_FRONT_CENTER },
{ MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, // Lc, Rc, L, R, Ls, Rs, LFE
{ MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | // C, L, R, Rls, Rrs, Ts, LFE
AV_CH_TOP_CENTER },
{ MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, // C, Cs, L, R, Rls, Rrs, LFE
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = {
{ MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // L, R, Rls, Rrs, C, Cs, Ls, Rs
{ MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, // C, L, R, Ls, Rs, Rls, Rrs, Cs
{ MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_QUAD | // L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt
AV_CH_TOP_FRONT_LEFT |
AV_CH_TOP_FRONT_RIGHT |
AV_CH_TOP_BACK_LEFT |
AV_CH_TOP_BACK_RIGHT },
{ MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, C, LFE, Ls, Rs, Lc, Rc
{ MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // C, Lc, Rc, L, R, Ls, Rs, LFE
{ MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // L, R, Ls, Rs, C, LFE, Lc, Rc
{ MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, // L, C, R, Ls, Rs, LFE, Lc, Rc
{ MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, // Lc, C, Rc, L, R, Ls, Rs, LFE
{ MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, // L, R, C, LFE, Ls, Rs, Rls, Rrs
{ MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, // L, C, R, Ls, Rs, LFE, Rls, Rrs
{ MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | // L, R, C, LFE, Ls, Rs, Lt, Rt
AV_CH_LAYOUT_STEREO_DOWNMIX },
{ MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lsd, Rsd
AV_CH_SURROUND_DIRECT_LEFT |
AV_CH_SURROUND_DIRECT_RIGHT },
{ MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Lw, Rw
AV_CH_WIDE_LEFT |
AV_CH_WIDE_RIGHT },
{ MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Vhl, Vhr
AV_CH_TOP_FRONT_LEFT |
AV_CH_TOP_FRONT_RIGHT },
{ MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Ts
AV_CH_BACK_CENTER |
AV_CH_TOP_CENTER },
{ MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Cs, Vhc
AV_CH_BACK_CENTER |
AV_CH_TOP_FRONT_CENTER },
{ MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | // L, C, R, Ls, Rs, LFE, Ts, Vhc
AV_CH_TOP_CENTER |
AV_CH_TOP_FRONT_CENTER },
{ MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs
AV_CH_BACK_LEFT |
AV_CH_BACK_RIGHT |
AV_CH_FRONT_LEFT_OF_CENTER |
AV_CH_FRONT_RIGHT_OF_CENTER },
{ MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | // Lc, C, Rc, L, R, Ls, Cs, Rs
AV_CH_FRONT_LEFT_OF_CENTER |
AV_CH_FRONT_RIGHT_OF_CENTER |
AV_CH_BACK_CENTER },
{ 0, 0 },
};
static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = {
{ MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | // Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE
AV_CH_BACK_LEFT |
AV_CH_BACK_RIGHT |
AV_CH_FRONT_LEFT_OF_CENTER |
AV_CH_FRONT_RIGHT_OF_CENTER |
AV_CH_LOW_FREQUENCY },
{ MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | // Lc, C, Rc, L, R, Ls, Cs, Rs, LFE
AV_CH_BACK_CENTER },
{ 0, 0 },
};
static const struct MovChannelLayoutMap *mov_ch_layout_map[] = {
mov_ch_layout_map_misc,
mov_ch_layout_map_1ch,
mov_ch_layout_map_2ch,
mov_ch_layout_map_3ch,
mov_ch_layout_map_4ch,
mov_ch_layout_map_5ch,
mov_ch_layout_map_6ch,
mov_ch_layout_map_7ch,
mov_ch_layout_map_8ch,
mov_ch_layout_map_9ch,
};
static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = {
MOV_CH_LAYOUT_MONO,
MOV_CH_LAYOUT_STEREO,
MOV_CH_LAYOUT_AC3_1_0_1,
MOV_CH_LAYOUT_MPEG_3_0_B,
MOV_CH_LAYOUT_ITU_2_1,
MOV_CH_LAYOUT_DVD_4,
MOV_CH_LAYOUT_QUADRAPHONIC,
MOV_CH_LAYOUT_MPEG_4_0_B,
MOV_CH_LAYOUT_ITU_2_2,
MOV_CH_LAYOUT_AC3_2_1_1,
MOV_CH_LAYOUT_DTS_3_1,
MOV_CH_LAYOUT_MPEG_5_0_D,
MOV_CH_LAYOUT_DVD_18,
MOV_CH_LAYOUT_DTS_4_1,
MOV_CH_LAYOUT_MPEG_5_1_D,
MOV_CH_LAYOUT_AAC_6_0,
MOV_CH_LAYOUT_DTS_6_0_A,
MOV_CH_LAYOUT_AAC_6_1,
MOV_CH_LAYOUT_AAC_7_0,
MOV_CH_LAYOUT_DTS_6_1_A,
MOV_CH_LAYOUT_AAC_OCTAGONAL,
MOV_CH_LAYOUT_MPEG_7_1_B,
MOV_CH_LAYOUT_DTS_8_0_A,
0,
};
static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = {
MOV_CH_LAYOUT_MONO,
MOV_CH_LAYOUT_STEREO,
MOV_CH_LAYOUT_AC3_1_0_1,
MOV_CH_LAYOUT_AC3_3_0,
MOV_CH_LAYOUT_ITU_2_1,
MOV_CH_LAYOUT_DVD_4,
MOV_CH_LAYOUT_AC3_3_1,
MOV_CH_LAYOUT_ITU_2_2,
MOV_CH_LAYOUT_AC3_2_1_1,
MOV_CH_LAYOUT_AC3_3_0_1,
MOV_CH_LAYOUT_MPEG_5_0_C,
MOV_CH_LAYOUT_DVD_18,
MOV_CH_LAYOUT_AC3_3_1_1,
MOV_CH_LAYOUT_MPEG_5_1_C,
0,
};
static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = {
MOV_CH_LAYOUT_MONO,
MOV_CH_LAYOUT_STEREO,
MOV_CH_LAYOUT_MPEG_3_0_B,
MOV_CH_LAYOUT_MPEG_4_0_B,
MOV_CH_LAYOUT_MPEG_5_0_D,
MOV_CH_LAYOUT_MPEG_5_1_D,
MOV_CH_LAYOUT_AAC_6_1,
MOV_CH_LAYOUT_MPEG_7_1_B,
0,
};
movenc: Add channel layouts for PCM.
13 years ago
static const enum MovChannelLayoutTag mov_ch_layouts_wav[] = {
MOV_CH_LAYOUT_MONO,
MOV_CH_LAYOUT_STEREO,
MOV_CH_LAYOUT_MATRIXSTEREO,
MOV_CH_LAYOUT_MPEG_3_0_A,
MOV_CH_LAYOUT_QUADRAPHONIC,
MOV_CH_LAYOUT_MPEG_5_0_A,
MOV_CH_LAYOUT_MPEG_5_1_A,
MOV_CH_LAYOUT_MPEG_6_1_A,
MOV_CH_LAYOUT_MPEG_7_1_A,
MOV_CH_LAYOUT_MPEG_7_1_C,
MOV_CH_LAYOUT_SMPTE_DTV,
};
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
static const struct {
Replace all CODEC_ID_* with AV_CODEC_ID_*
13 years ago
enum AVCodecID codec_id;
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
const enum MovChannelLayoutTag *layouts;
} mov_codec_ch_layouts[] = {
Replace all CODEC_ID_* with AV_CODEC_ID_*
13 years ago
{ AV_CODEC_ID_AAC, mov_ch_layouts_aac },
{ AV_CODEC_ID_AC3, mov_ch_layouts_ac3 },
{ AV_CODEC_ID_ALAC, mov_ch_layouts_alac },
{ AV_CODEC_ID_PCM_U8, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S8, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S16LE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S16BE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S24LE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S24BE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S32LE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_S32BE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_F32LE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_F32BE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_F64LE, mov_ch_layouts_wav },
{ AV_CODEC_ID_PCM_F64BE, mov_ch_layouts_wav },
{ AV_CODEC_ID_NONE, NULL },
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
};
uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap)
{
int i, channels;
const struct MovChannelLayoutMap *layout_map;
mov: Support MOV_CH_LAYOUT_USE_DESCRIPTIONS for labeled descriptions.
13 years ago
/* use ff_mov_get_channel_label() to build a layout instead */
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS)
return 0;
/* handle the use of the channel bitmap */
if (tag == MOV_CH_LAYOUT_USE_BITMAP)
return bitmap < 0x40000 ? bitmap : 0;
/* get the layout map based on the channel count for the specified layout tag */
channels = tag & 0xFFFF;
if (channels > 9)
channels = 0;
layout_map = mov_ch_layout_map[channels];
/* find the channel layout for the specified layout tag */
for (i = 0; layout_map[i].tag != 0; i++) {
if (layout_map[i].tag == tag)
break;
}
return layout_map[i].layout;
}
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
static uint32_t mov_get_channel_label(uint32_t label)
mov: Support MOV_CH_LAYOUT_USE_DESCRIPTIONS for labeled descriptions.
13 years ago
{
if (label == 0)
return 0;
if (label <= 18)
return 1U << (label - 1);
if (label == 38)
return AV_CH_STEREO_LEFT;
if (label == 39)
return AV_CH_STEREO_RIGHT;
return 0;
}
Replace all CODEC_ID_* with AV_CODEC_ID_*
13 years ago
uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
uint64_t channel_layout,
uint32_t *bitmap)
{
int i, j;
uint32_t tag = 0;
const enum MovChannelLayoutTag *layouts = NULL;
/* find the layout list for the specified codec */
Replace all CODEC_ID_* with AV_CODEC_ID_*
13 years ago
for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) {
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
if (mov_codec_ch_layouts[i].codec_id == codec_id)
break;
}
Replace all CODEC_ID_* with AV_CODEC_ID_*
13 years ago
if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE)
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
layouts = mov_codec_ch_layouts[i].layouts;
if (layouts) {
int channels;
const struct MovChannelLayoutMap *layout_map;
/* get the layout map based on the channel count */
channels = av_get_channel_layout_nb_channels(channel_layout);
if (channels > 9)
channels = 0;
layout_map = mov_ch_layout_map[channels];
/* find the layout tag for the specified channel layout */
for (i = 0; layouts[i] != 0; i++) {
mov_chan: Fix operator precedence by adding parentheses Signed-off-by: Martin Storsjö <martin@martin.st>
13 years ago
if ((layouts[i] & 0xFFFF) != channels)
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
13 years ago
continue;
for (j = 0; layout_map[j].tag != 0; j++) {
if (layout_map[j].tag == layouts[i] &&
layout_map[j].layout == channel_layout)
break;
}
if (layout_map[j].tag)
break;
}
tag = layouts[i];
}
/* if no tag was found, use channel bitmap as a backup if possible */
if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) {
tag = MOV_CH_LAYOUT_USE_BITMAP;
*bitmap = (uint32_t)channel_layout;
} else
*bitmap = 0;
/* TODO: set channel descriptions as a secondary backup */
return tag;
}
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
mov_chan: Pass a separate AVIOContext for reading This fixes crashes when called from rtpdec_qt, where AVFormatContext->pb is null, a crash present since 3bab7cd128. Signed-off-by: Martin Storsjö <martin@martin.st>
12 years ago
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
int64_t size)
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
{
uint32_t layout_tag, bitmap, num_descr, label_mask;
int i;
if (size < 12)
return AVERROR_INVALIDDATA;
layout_tag = avio_rb32(pb);
bitmap = avio_rb32(pb);
num_descr = avio_rb32(pb);
Use ISO C printf conversion specifiers where appropriate
9 years ago
av_log(s, AV_LOG_TRACE,
"chan: layout=%"PRIu32" bitmap=%"PRIu32" num_descr=%"PRIu32"\n",
layout_tag, bitmap, num_descr);
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
if (size < 12ULL + num_descr * 20ULL)
return 0;
label_mask = 0;
for (i = 0; i < num_descr; i++) {
uint32_t label;
mov: abort on EOF in ff_mov_read_chan Otherwise the loop can take a lot of time if num_descr is very large. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
10 years ago
if (pb->eof_reached) {
av_log(s, AV_LOG_ERROR,
"reached EOF while reading channel layout\n");
return AVERROR_INVALIDDATA;
}
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
label = avio_rb32(pb); // mChannelLabel
avio_rb32(pb); // mChannelFlags
avio_rl32(pb); // mCoordinates[0]
avio_rl32(pb); // mCoordinates[1]
avio_rl32(pb); // mCoordinates[2]
if (layout_tag == 0) {
uint32_t mask_incr = mov_get_channel_label(label);
if (mask_incr == 0) {
label_mask = 0;
break;
}
label_mask |= mask_incr;
}
}
mov_chan: Only set the channel_layout if setting it to a nonzero value If regularly parsing new chan atoms (as in rtpdec_qt), but the chan atoms don't actually contain any channel layout, don't reset the value that the caller has filled in (by guessing). Signed-off-by: Martin Storsjö <martin@martin.st>
12 years ago
if (layout_tag == 0) {
if (label_mask)
lavf: replace AVStream.codec with AVStream.codecpar Currently, AVStream contains an embedded AVCodecContext instance, which is used by demuxers to export stream parameters to the caller and by muxers to receive stream parameters from the caller. It is also used internally as the codec context that is passed to parsers. In addition, it is also widely used by the callers as the decoding (when demuxer) or encoding (when muxing) context, though this has been officially discouraged since Libav 11. There are multiple important problems with this approach: - the fields in AVCodecContext are in general one of * stream parameters * codec options * codec state However, it's not clear which ones are which. It is consequently unclear which fields are a demuxer allowed to set or a muxer allowed to read. This leads to erratic behaviour depending on whether decoding or encoding is being performed or not (and whether it uses the AVStream embedded codec context). - various synchronization issues arising from the fact that the same context is used by several different APIs (muxers/demuxers, parsers, bitstream filters and encoders/decoders) simultaneously, with there being no clear rules for who can modify what and the different processes being typically delayed with respect to each other. - avformat_find_stream_info() making it necessary to support opening and closing a single codec context multiple times, thus complicating the semantics of freeing various allocated objects in the codec context. Those problems are resolved by replacing the AVStream embedded codec context with a newly added AVCodecParameters instance, which stores only the stream parameters exported by the demuxers or read by the muxers.
11 years ago
st->codecpar->channel_layout = label_mask;
mov_chan: Only set the channel_layout if setting it to a nonzero value If regularly parsing new chan atoms (as in rtpdec_qt), but the chan atoms don't actually contain any channel layout, don't reset the value that the caller has filled in (by guessing). Signed-off-by: Martin Storsjö <martin@martin.st>
12 years ago
} else
lavf: replace AVStream.codec with AVStream.codecpar Currently, AVStream contains an embedded AVCodecContext instance, which is used by demuxers to export stream parameters to the caller and by muxers to receive stream parameters from the caller. It is also used internally as the codec context that is passed to parsers. In addition, it is also widely used by the callers as the decoding (when demuxer) or encoding (when muxing) context, though this has been officially discouraged since Libav 11. There are multiple important problems with this approach: - the fields in AVCodecContext are in general one of * stream parameters * codec options * codec state However, it's not clear which ones are which. It is consequently unclear which fields are a demuxer allowed to set or a muxer allowed to read. This leads to erratic behaviour depending on whether decoding or encoding is being performed or not (and whether it uses the AVStream embedded codec context). - various synchronization issues arising from the fact that the same context is used by several different APIs (muxers/demuxers, parsers, bitstream filters and encoders/decoders) simultaneously, with there being no clear rules for who can modify what and the different processes being typically delayed with respect to each other. - avformat_find_stream_info() making it necessary to support opening and closing a single codec context multiple times, thus complicating the semantics of freeing various allocated objects in the codec context. Those problems are resolved by replacing the AVStream embedded codec context with a newly added AVCodecParameters instance, which stores only the stream parameters exported by the demuxers or read by the muxers.
11 years ago
st->codecpar->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
13 years ago
return 0;
}