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c68dc3e5f1
We can do this by using an X-macro for channel map declaration and doing a static_assert() in one pass for the check. Thanks for Andreas Rheinhardt for the suggestion. Signed-off-by: Marton Balint <cus@passwd.hu>
825 lines
30 KiB
C
825 lines
30 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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#include <assert.h>
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#include <stdint.h>
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#include "libavutil/avassert.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/mem.h"
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#include "libavcodec/codec_id.h"
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#include "mov_chan.h"
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enum {
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c_L = AV_CHAN_FRONT_LEFT,
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c_R = AV_CHAN_FRONT_RIGHT,
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c_C = AV_CHAN_FRONT_CENTER,
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c_LFE = AV_CHAN_LOW_FREQUENCY,
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c_Rls = AV_CHAN_BACK_LEFT,
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c_Rrs = AV_CHAN_BACK_RIGHT,
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c_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER,
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c_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER,
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c_Cs = AV_CHAN_BACK_CENTER,
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c_Ls = AV_CHAN_SIDE_LEFT,
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c_Rs = AV_CHAN_SIDE_RIGHT,
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c_Ts = AV_CHAN_TOP_CENTER,
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c_Vhl = AV_CHAN_TOP_FRONT_LEFT,
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c_Vhc = AV_CHAN_TOP_FRONT_CENTER,
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c_Vhr = AV_CHAN_TOP_FRONT_RIGHT,
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c_Rlt = AV_CHAN_TOP_BACK_LEFT,
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// = AV_CHAN_TOP_BACK_CENTER,
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c_Rrt = AV_CHAN_TOP_BACK_RIGHT,
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c_Lt = AV_CHAN_STEREO_LEFT,
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c_Rt = AV_CHAN_STEREO_RIGHT,
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c_Lw = AV_CHAN_WIDE_LEFT,
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c_Rw = AV_CHAN_WIDE_RIGHT,
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c_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT,
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c_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT,
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c_LFE2 = AV_CHAN_LOW_FREQUENCY_2,
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// = AV_CHAN_TOP_SIDE_LEFT,
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// = AV_CHAN_TOP_SIDE_RIGHT,
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// = AV_CHAN_BOTTOM_FRONT_CENTER,
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// = AV_CHAN_BOTTOM_FRONT_LEFT,
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// = AV_CHAN_BOTTOM_FRONT_RIGHT,
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c_W = AV_CHAN_AMBISONIC_BASE,
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c_Y = AV_CHAN_AMBISONIC_BASE + 1,
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c_Z = AV_CHAN_AMBISONIC_BASE + 2,
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c_X = AV_CHAN_AMBISONIC_BASE + 3,
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/* The following have no exact counterparts */
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c_LFE1 = AV_CHAN_LOW_FREQUENCY,
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c_Csd = AV_CHAN_NONE,
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c_HI = AV_CHAN_NONE,
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c_VI = AV_CHAN_NONE,
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c_Haptic = AV_CHAN_NONE,
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};
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struct MovChannelLayoutMap {
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union {
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uint32_t tag;
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enum AVChannel id;
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};
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};
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#define TAG(_tag, _cnt) {.tag = _tag}
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#define ID(_0) {.id = c_##_0}
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#define CHLIST01(_tag, _1) CHLIST(_tag, 1, ID(_1))
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#define CHLIST02(_tag, _1, _2) CHLIST(_tag, 2, ID(_1), ID(_2))
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#define CHLIST03(_tag, _1, _2, _3) CHLIST(_tag, 3, ID(_1), ID(_2), ID(_3))
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#define CHLIST04(_tag, _1, _2, _3, _4) CHLIST(_tag, 4, ID(_1), ID(_2), ID(_3), ID(_4))
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#define CHLIST05(_tag, _1, _2, _3, _4, _5) CHLIST(_tag, 5, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5))
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#define CHLIST06(_tag, _1, _2, _3, _4, _5, _6) CHLIST(_tag, 6, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6))
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#define CHLIST07(_tag, _1, _2, _3, _4, _5, _6, _7) CHLIST(_tag, 7, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7))
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#define CHLIST08(_tag, _1, _2, _3, _4, _5, _6, _7, _8) CHLIST(_tag, 8, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8))
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#define CHLIST09(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9) CHLIST(_tag, 9, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9))
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#define CHLIST16(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) \
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CHLIST(_tag, 16, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
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ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16))
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#define CHLIST21(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21) \
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CHLIST(_tag, 21, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \
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ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), ID(_21))
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#define MOV_CH_LAYOUT_MAP \
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CHLIST01( MOV_CH_LAYOUT_MONO, C )\
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CHLIST02( MOV_CH_LAYOUT_STEREO, L, R )\
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CHLIST02( MOV_CH_LAYOUT_STEREOHEADPHONES, L, R )\
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CHLIST02( MOV_CH_LAYOUT_BINAURAL, L, R )\
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CHLIST02( MOV_CH_LAYOUT_MIDSIDE, L, R )\
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CHLIST02( MOV_CH_LAYOUT_XY, L, R )\
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CHLIST02( MOV_CH_LAYOUT_MATRIXSTEREO, Lt, Rt )\
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CHLIST02( MOV_CH_LAYOUT_AC3_1_0_1, C, LFE )\
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CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_A, L, R, C )\
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CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_B, C, L, R )\
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CHLIST03( MOV_CH_LAYOUT_AC3_3_0, L, C, R )\
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CHLIST03( MOV_CH_LAYOUT_ITU_2_1, L, R, Cs )\
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CHLIST03( MOV_CH_LAYOUT_DVD_4, L, R, LFE )\
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CHLIST04( MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, W, X, Y, Z )\
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CHLIST04( MOV_CH_LAYOUT_QUADRAPHONIC, L, R, Rls, Rrs )\
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CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_A, L, R, C, Cs )\
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CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_B, C, L, R, Cs )\
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CHLIST04( MOV_CH_LAYOUT_AC3_3_1, L, C, R, Cs )\
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CHLIST04( MOV_CH_LAYOUT_ITU_2_2, L, R, Ls, Rs )\
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CHLIST04( MOV_CH_LAYOUT_DVD_5, L, R, LFE, Cs )\
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CHLIST04( MOV_CH_LAYOUT_AC3_2_1_1, L, R, Cs, LFE )\
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CHLIST04( MOV_CH_LAYOUT_DVD_10, L, R, C, LFE )\
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CHLIST04( MOV_CH_LAYOUT_AC3_3_0_1, L, C, R, LFE )\
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CHLIST04( MOV_CH_LAYOUT_DTS_3_1, C, L, R, LFE )\
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CHLIST05( MOV_CH_LAYOUT_PENTAGONAL, L, R, Rls, Rrs, C )\
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CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_A, L, R, C, Ls, Rs )\
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CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_B, L, R, Ls, Rs, C )\
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CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_C, L, C, R, Ls, Rs )\
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CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_D, C, L, R, Ls, Rs )\
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CHLIST05( MOV_CH_LAYOUT_DVD_6, L, R, LFE, Ls, Rs )\
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CHLIST05( MOV_CH_LAYOUT_DVD_18, L, R, Ls, Rs, LFE )\
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CHLIST05( MOV_CH_LAYOUT_DVD_11, L, R, C, LFE, Cs )\
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CHLIST05( MOV_CH_LAYOUT_AC3_3_1_1, L, C, R, Cs, LFE )\
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CHLIST05( MOV_CH_LAYOUT_DTS_4_1, C, L, R, Cs, LFE )\
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CHLIST06( MOV_CH_LAYOUT_HEXAGONAL, L, R, Rls, Rrs, C, Cs )\
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CHLIST06( MOV_CH_LAYOUT_DTS_6_0_C, C, Cs, L, R, Rls, Rrs )\
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CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_A, L, R, C, LFE, Ls, Rs )\
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CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_B, L, R, Ls, Rs, C, LFE )\
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CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_C, L, C, R, Ls, Rs, LFE )\
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CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_D, C, L, R, Ls, Rs, LFE )\
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CHLIST06( MOV_CH_LAYOUT_AUDIOUNIT_6_0, L, R, Ls, Rs, C, Cs )\
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CHLIST06( MOV_CH_LAYOUT_AAC_6_0, C, L, R, Ls, Rs, Cs )\
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CHLIST06( MOV_CH_LAYOUT_EAC3_6_0_A, L, C, R, Ls, Rs, Cs )\
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CHLIST06( MOV_CH_LAYOUT_DTS_6_0_A, Lc, Rc, L, R, Ls, Rs )\
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CHLIST06( MOV_CH_LAYOUT_DTS_6_0_B, C, L, R, Rls, Rrs, Ts )\
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CHLIST07( MOV_CH_LAYOUT_MPEG_6_1_A, L, R, C, LFE, Ls, Rs, Cs )\
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CHLIST07( MOV_CH_LAYOUT_AAC_6_1, C, L, R, Ls, Rs, Cs, LFE )\
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CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_A, L, C, R, Ls, Rs, LFE, Cs )\
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CHLIST07( MOV_CH_LAYOUT_DTS_6_1_D, C, L, R, Ls, Rs, LFE, Cs )\
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CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0, L, R, Ls, Rs, C, Rls, Rrs )\
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CHLIST07( MOV_CH_LAYOUT_AAC_7_0, C, L, R, Ls, Rs, Rls, Rrs )\
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CHLIST07( MOV_CH_LAYOUT_EAC3_7_0_A, L, C, R, Ls, Rs, Rls, Rrs )\
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CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, L, R, Ls, Rs, C, Lc, Rc )\
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CHLIST07( MOV_CH_LAYOUT_DTS_7_0, Lc, C, Rc, L, R, Ls, Rs )\
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CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_B, L, C, R, Ls, Rs, LFE, Ts )\
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CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_C, L, C, R, Ls, Rs, LFE, Vhc )\
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CHLIST07( MOV_CH_LAYOUT_DTS_6_1_A, Lc, Rc, L, R, Ls, Rs, LFE )\
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CHLIST07( MOV_CH_LAYOUT_DTS_6_1_B, C, L, R, Rls, Rrs, Ts, LFE )\
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CHLIST07( MOV_CH_LAYOUT_DTS_6_1_C, C, Cs, L, R, Rls, Rrs, LFE )\
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CHLIST08( MOV_CH_LAYOUT_OCTAGONAL, L, R, Rls, Rrs, C, Cs, Ls, Rs )\
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CHLIST08( MOV_CH_LAYOUT_AAC_OCTAGONAL, C, L, R, Ls, Rs, Rls, Rrs, Cs )\
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CHLIST08( MOV_CH_LAYOUT_CUBE, L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt )\
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CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_A, L, R, C, LFE, Ls, Rs, Lc, Rc )\
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CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_B, C, Lc, Rc, L, R, Ls, Rs, LFE )\
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CHLIST08( MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, L, R, Ls, Rs, C, LFE, Lc, Rc )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_B, L, C, R, Ls, Rs, LFE, Lc, Rc )\
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CHLIST08( MOV_CH_LAYOUT_DTS_7_1, Lc, C, Rc, L, R, Ls, Rs, LFE )\
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CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_C, L, R, C, LFE, Ls, Rs, Rls, Rrs )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_A, L, C, R, Ls, Rs, LFE, Rls, Rrs )\
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CHLIST08( MOV_CH_LAYOUT_SMPTE_DTV, L, R, C, LFE, Ls, Rs, Lt, Rt )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_C, L, C, R, Ls, Rs, LFE, Lsd, Rsd )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_D, L, C, R, Ls, Rs, LFE, Lw, Rw )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_E, L, C, R, Ls, Rs, LFE, Vhl, Vhr )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_F, L, C, R, Ls, Rs, LFE, Cs, Ts )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_G, L, C, R, Ls, Rs, LFE, Cs, Vhc )\
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CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_H, L, C, R, Ls, Rs, LFE, Ts, Vhc )\
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CHLIST08( MOV_CH_LAYOUT_DTS_8_0_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs )\
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CHLIST08( MOV_CH_LAYOUT_DTS_8_0_B, Lc, C, Rc, L, R, Ls, Cs, Rs )\
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CHLIST09( MOV_CH_LAYOUT_DTS_8_1_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE )\
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CHLIST09( MOV_CH_LAYOUT_DTS_8_1_B, Lc, C, Rc, L, R, Ls, Cs, Rs, LFE )\
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CHLIST16( MOV_CH_LAYOUT_TMH_10_2_STD, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2 )\
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CHLIST21( MOV_CH_LAYOUT_TMH_10_2_FULL, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2, Lc, Rc, HI, VI, Haptic )\
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#define CHLIST(_tag, _cnt, ...) static_assert((_tag & 0xffff) == _cnt, "Channel count of " #_tag " is not " #_cnt);
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MOV_CH_LAYOUT_MAP
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#undef CHLIST
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#define CHLIST(_tag, _cnt, ...) TAG(_tag, _cnt), __VA_ARGS__,
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static const struct MovChannelLayoutMap mov_ch_layout_map[] = {
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MOV_CH_LAYOUT_MAP
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};
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static const enum MovChannelLayoutTag mov_ch_layouts_aac[] = {
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MOV_CH_LAYOUT_MONO,
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MOV_CH_LAYOUT_STEREO,
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MOV_CH_LAYOUT_AC3_1_0_1,
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MOV_CH_LAYOUT_MPEG_3_0_B,
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MOV_CH_LAYOUT_ITU_2_1,
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MOV_CH_LAYOUT_DVD_4,
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MOV_CH_LAYOUT_QUADRAPHONIC,
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MOV_CH_LAYOUT_MPEG_4_0_B,
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MOV_CH_LAYOUT_ITU_2_2,
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MOV_CH_LAYOUT_AC3_2_1_1,
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MOV_CH_LAYOUT_DTS_3_1,
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MOV_CH_LAYOUT_MPEG_5_0_D,
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MOV_CH_LAYOUT_DVD_18,
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MOV_CH_LAYOUT_DTS_4_1,
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MOV_CH_LAYOUT_MPEG_5_1_D,
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MOV_CH_LAYOUT_AAC_6_0,
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MOV_CH_LAYOUT_DTS_6_0_A,
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MOV_CH_LAYOUT_AAC_6_1,
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MOV_CH_LAYOUT_AAC_7_0,
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MOV_CH_LAYOUT_DTS_6_1_A,
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MOV_CH_LAYOUT_AAC_OCTAGONAL,
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MOV_CH_LAYOUT_MPEG_7_1_B,
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MOV_CH_LAYOUT_DTS_8_0_A,
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0,
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};
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static const enum MovChannelLayoutTag mov_ch_layouts_ac3[] = {
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MOV_CH_LAYOUT_MONO,
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MOV_CH_LAYOUT_STEREO,
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MOV_CH_LAYOUT_AC3_1_0_1,
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MOV_CH_LAYOUT_AC3_3_0,
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MOV_CH_LAYOUT_ITU_2_1,
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MOV_CH_LAYOUT_DVD_4,
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MOV_CH_LAYOUT_AC3_3_1,
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MOV_CH_LAYOUT_ITU_2_2,
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MOV_CH_LAYOUT_AC3_2_1_1,
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MOV_CH_LAYOUT_AC3_3_0_1,
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MOV_CH_LAYOUT_MPEG_5_0_C,
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MOV_CH_LAYOUT_DVD_18,
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MOV_CH_LAYOUT_AC3_3_1_1,
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MOV_CH_LAYOUT_MPEG_5_1_C,
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0,
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};
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static const enum MovChannelLayoutTag mov_ch_layouts_alac[] = {
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MOV_CH_LAYOUT_MONO,
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MOV_CH_LAYOUT_STEREO,
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MOV_CH_LAYOUT_MPEG_3_0_B,
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MOV_CH_LAYOUT_MPEG_4_0_B,
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MOV_CH_LAYOUT_MPEG_5_0_D,
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MOV_CH_LAYOUT_MPEG_5_1_D,
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MOV_CH_LAYOUT_AAC_6_1,
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MOV_CH_LAYOUT_MPEG_7_1_B,
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0,
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};
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static const enum MovChannelLayoutTag mov_ch_layouts_wav[] = {
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MOV_CH_LAYOUT_MONO,
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MOV_CH_LAYOUT_STEREO,
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MOV_CH_LAYOUT_MATRIXSTEREO,
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MOV_CH_LAYOUT_MPEG_3_0_A,
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MOV_CH_LAYOUT_QUADRAPHONIC,
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MOV_CH_LAYOUT_MPEG_5_0_A,
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MOV_CH_LAYOUT_MPEG_5_1_A,
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MOV_CH_LAYOUT_MPEG_6_1_A,
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MOV_CH_LAYOUT_MPEG_7_1_A,
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MOV_CH_LAYOUT_MPEG_7_1_C,
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MOV_CH_LAYOUT_SMPTE_DTV,
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0,
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};
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static const struct {
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enum AVCodecID codec_id;
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const enum MovChannelLayoutTag *layouts;
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} mov_codec_ch_layouts[] = {
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{ AV_CODEC_ID_AAC, mov_ch_layouts_aac },
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{ AV_CODEC_ID_AC3, mov_ch_layouts_ac3 },
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{ AV_CODEC_ID_ALAC, mov_ch_layouts_alac },
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{ AV_CODEC_ID_PCM_U8, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S8, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S16LE, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S16BE, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S24LE, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S24BE, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S32LE, mov_ch_layouts_wav },
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{ AV_CODEC_ID_PCM_S32BE, mov_ch_layouts_wav },
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{ 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 },
|
|
};
|
|
|
|
static const struct MovChannelLayoutMap* find_layout_map(uint32_t tag)
|
|
{
|
|
for (int i = 0; i < FF_ARRAY_ELEMS(mov_ch_layout_map); i += 1 + (mov_ch_layout_map[i].tag & 0xffff))
|
|
if (mov_ch_layout_map[i].tag == tag)
|
|
return &mov_ch_layout_map[i + 1];
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Get the channel layout for the specified non-special channel layout tag if
|
|
* known.
|
|
*
|
|
* @param[in,out] ch_layout channel layout
|
|
* @param[in] tag channel layout tag
|
|
* @return <0 on error
|
|
*/
|
|
static int mov_get_channel_layout(AVChannelLayout *ch_layout, uint32_t tag)
|
|
{
|
|
int i, channels;
|
|
const struct MovChannelLayoutMap *layout_map;
|
|
|
|
channels = tag & 0xFFFF;
|
|
|
|
/* find the channel layout for the specified layout tag */
|
|
layout_map = find_layout_map(tag);
|
|
if (layout_map) {
|
|
int ret;
|
|
av_channel_layout_uninit(ch_layout);
|
|
ret = av_channel_layout_custom_init(ch_layout, channels);
|
|
if (ret < 0)
|
|
return ret;
|
|
for (i = 0; i < channels; i++) {
|
|
enum AVChannel id = layout_map[i].id;
|
|
ch_layout->u.map[i].id = (id != AV_CHAN_NONE ? id : AV_CHAN_UNKNOWN);
|
|
}
|
|
return av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static enum AVChannel mov_get_channel_id(uint32_t label)
|
|
{
|
|
if (label == 0)
|
|
return AV_CHAN_UNUSED;
|
|
if (label <= 18)
|
|
return (label - 1);
|
|
if (label == 35)
|
|
return AV_CHAN_WIDE_LEFT;
|
|
if (label == 36)
|
|
return AV_CHAN_WIDE_RIGHT;
|
|
if (label == 37)
|
|
return AV_CHAN_LOW_FREQUENCY_2;
|
|
if (label == 38)
|
|
return AV_CHAN_STEREO_LEFT;
|
|
if (label == 39)
|
|
return AV_CHAN_STEREO_RIGHT;
|
|
return AV_CHAN_UNKNOWN;
|
|
}
|
|
|
|
static uint32_t mov_get_channel_label(enum AVChannel channel)
|
|
{
|
|
if (channel < 0)
|
|
return 0;
|
|
if (channel <= AV_CHAN_TOP_BACK_RIGHT)
|
|
return channel + 1;
|
|
if (channel == AV_CHAN_WIDE_LEFT)
|
|
return 35;
|
|
if (channel == AV_CHAN_WIDE_RIGHT)
|
|
return 36;
|
|
if (channel == AV_CHAN_LOW_FREQUENCY_2)
|
|
return 37;
|
|
if (channel == AV_CHAN_STEREO_LEFT)
|
|
return 38;
|
|
if (channel == AV_CHAN_STEREO_RIGHT)
|
|
return 39;
|
|
return 0;
|
|
}
|
|
|
|
int ff_mov_get_channel_layout_tag(const AVCodecParameters *par,
|
|
uint32_t *layout,
|
|
uint32_t *bitmap,
|
|
uint32_t **pchannel_desc)
|
|
{
|
|
int i, j;
|
|
uint32_t tag = 0;
|
|
const enum MovChannelLayoutTag *layouts = NULL;
|
|
|
|
/* find the layout list for the specified codec */
|
|
for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) {
|
|
if (mov_codec_ch_layouts[i].codec_id == par->codec_id)
|
|
break;
|
|
}
|
|
if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE)
|
|
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 = par->ch_layout.nb_channels;
|
|
|
|
/* find the layout tag for the specified channel layout */
|
|
for (i = 0; layouts[i] != 0; i++) {
|
|
if ((layouts[i] & 0xFFFF) != channels)
|
|
continue;
|
|
layout_map = find_layout_map(layouts[i]);
|
|
if (layout_map) {
|
|
for (j = 0; j < channels; j++) {
|
|
if (av_channel_layout_channel_from_index(&par->ch_layout, j) != layout_map[j].id)
|
|
break;
|
|
}
|
|
if (j == channels)
|
|
break;
|
|
}
|
|
}
|
|
tag = layouts[i];
|
|
}
|
|
|
|
*layout = tag;
|
|
*bitmap = 0;
|
|
*pchannel_desc = NULL;
|
|
|
|
/* if no tag was found, use channel bitmap or description as a backup if possible */
|
|
if (tag == 0) {
|
|
uint32_t *channel_desc;
|
|
if (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE &&
|
|
par->ch_layout.u.mask < 0x40000) {
|
|
*layout = MOV_CH_LAYOUT_USE_BITMAP;
|
|
*bitmap = (uint32_t)par->ch_layout.u.mask;
|
|
return 0;
|
|
} else if (par->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC)
|
|
return AVERROR(ENOSYS);
|
|
|
|
channel_desc = av_malloc_array(par->ch_layout.nb_channels, sizeof(*channel_desc));
|
|
if (!channel_desc)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (i = 0; i < par->ch_layout.nb_channels; i++) {
|
|
channel_desc[i] =
|
|
mov_get_channel_label(av_channel_layout_channel_from_index(&par->ch_layout, i));
|
|
|
|
if (channel_desc[i] == 0) {
|
|
av_free(channel_desc);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
}
|
|
|
|
*pchannel_desc = channel_desc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
|
|
int64_t size)
|
|
{
|
|
uint32_t layout_tag, bitmap, num_descr;
|
|
int ret;
|
|
AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
|
|
|
|
if (size < 12)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
layout_tag = avio_rb32(pb);
|
|
bitmap = avio_rb32(pb);
|
|
num_descr = avio_rb32(pb);
|
|
|
|
av_log(s, AV_LOG_DEBUG, "chan: layout=%"PRIu32" "
|
|
"bitmap=%"PRIu32" num_descr=%"PRIu32"\n",
|
|
layout_tag, bitmap, num_descr);
|
|
|
|
if (size < 12ULL + num_descr * 20ULL)
|
|
return 0;
|
|
|
|
if (layout_tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) {
|
|
int nb_channels = ch_layout->nb_channels ? ch_layout->nb_channels : num_descr;
|
|
if (num_descr > nb_channels) {
|
|
av_log(s, AV_LOG_WARNING, "got %d channel descriptions, capping to the number of channels %d\n",
|
|
num_descr, nb_channels);
|
|
num_descr = nb_channels;
|
|
}
|
|
|
|
av_channel_layout_uninit(ch_layout);
|
|
ret = av_channel_layout_custom_init(ch_layout, nb_channels);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
for (int i = 0; i < num_descr; i++) {
|
|
uint32_t label;
|
|
if (pb->eof_reached) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"reached EOF while reading channel layout\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
label = avio_rb32(pb); // mChannelLabel
|
|
avio_rb32(pb); // mChannelFlags
|
|
avio_rl32(pb); // mCoordinates[0]
|
|
avio_rl32(pb); // mCoordinates[1]
|
|
avio_rl32(pb); // mCoordinates[2]
|
|
size -= 20;
|
|
ch_layout->u.map[i].id = mov_get_channel_id(label);
|
|
}
|
|
|
|
ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
|
|
if (ret < 0)
|
|
goto out;
|
|
} else if (layout_tag == MOV_CH_LAYOUT_USE_BITMAP) {
|
|
if (!ch_layout->nb_channels || av_popcount(bitmap) == ch_layout->nb_channels) {
|
|
if (bitmap < 0x40000) {
|
|
av_channel_layout_uninit(ch_layout);
|
|
av_channel_layout_from_mask(ch_layout, bitmap);
|
|
}
|
|
} else {
|
|
av_log(s, AV_LOG_WARNING, "ignoring channel layout bitmap with %d channels because number of channels is %d\n",
|
|
av_popcount64(bitmap), ch_layout->nb_channels);
|
|
}
|
|
} else if (layout_tag & 0xFFFF) {
|
|
int nb_channels = layout_tag & 0xFFFF;
|
|
if (!ch_layout->nb_channels)
|
|
ch_layout->nb_channels = nb_channels;
|
|
if (nb_channels == ch_layout->nb_channels) {
|
|
ret = mov_get_channel_layout(ch_layout, layout_tag);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
av_log(s, AV_LOG_WARNING, "ignoring layout tag with %d channels because number of channels is %d\n",
|
|
nb_channels, ch_layout->nb_channels);
|
|
}
|
|
}
|
|
ret = 0;
|
|
|
|
out:
|
|
avio_skip(pb, size - 12);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* ISO/IEC 23001-8, 8.2 */
|
|
static const AVChannelLayout iso_channel_configuration[] = {
|
|
// 0: any setup
|
|
{0},
|
|
|
|
// 1: centre front
|
|
AV_CHANNEL_LAYOUT_MONO,
|
|
|
|
// 2: left front, right front
|
|
AV_CHANNEL_LAYOUT_STEREO,
|
|
|
|
// 3: centre front, left front, right front
|
|
AV_CHANNEL_LAYOUT_SURROUND,
|
|
|
|
// 4: centre front, left front, right front, rear centre
|
|
AV_CHANNEL_LAYOUT_4POINT0,
|
|
|
|
// 5: centre front, left front, right front, left surround, right surround
|
|
AV_CHANNEL_LAYOUT_5POINT0,
|
|
|
|
// 6: 5 + LFE
|
|
AV_CHANNEL_LAYOUT_5POINT1,
|
|
|
|
// 7: centre front, left front centre, right front centre,
|
|
// left front, right front, left surround, right surround, LFE
|
|
AV_CHANNEL_LAYOUT_7POINT1_WIDE,
|
|
|
|
// 8: channel1, channel2
|
|
AV_CHANNEL_LAYOUT_STEREO_DOWNMIX,
|
|
|
|
// 9: left front, right front, rear centre
|
|
AV_CHANNEL_LAYOUT_2_1,
|
|
|
|
// 10: left front, right front, left surround, right surround
|
|
AV_CHANNEL_LAYOUT_2_2,
|
|
|
|
// 11: centre front, left front, right front, left surround, right surround, rear centre, LFE
|
|
AV_CHANNEL_LAYOUT_6POINT1,
|
|
|
|
// 12: centre front, left front, right front
|
|
// left surround, right surround
|
|
// rear surround left, rear surround right
|
|
// LFE
|
|
AV_CHANNEL_LAYOUT_7POINT1,
|
|
|
|
// 13:
|
|
AV_CHANNEL_LAYOUT_22POINT2,
|
|
|
|
// 14:
|
|
AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK,
|
|
|
|
// TODO: 15 - 20
|
|
};
|
|
|
|
/* ISO/IEC 23001-8, table 8 */
|
|
static const enum AVChannel iso_channel_position[] = {
|
|
// 0: left front
|
|
AV_CHAN_FRONT_LEFT,
|
|
|
|
// 1: right front
|
|
AV_CHAN_FRONT_RIGHT,
|
|
|
|
// 2: centre front
|
|
AV_CHAN_FRONT_CENTER,
|
|
|
|
// 3: low frequence enhancement
|
|
AV_CHAN_LOW_FREQUENCY,
|
|
|
|
// 4: left surround
|
|
// TODO
|
|
AV_CHAN_NONE,
|
|
|
|
// 5: right surround
|
|
// TODO
|
|
AV_CHAN_NONE,
|
|
|
|
// 6: left front centre
|
|
AV_CHAN_FRONT_LEFT_OF_CENTER,
|
|
|
|
// 7: right front centre
|
|
AV_CHAN_FRONT_RIGHT_OF_CENTER,
|
|
|
|
// 8: rear surround left
|
|
AV_CHAN_BACK_LEFT,
|
|
|
|
// 9: rear surround right
|
|
AV_CHAN_BACK_RIGHT,
|
|
|
|
// 10: rear centre
|
|
AV_CHAN_BACK_CENTER,
|
|
|
|
// 11: left surround direct
|
|
AV_CHAN_SURROUND_DIRECT_LEFT,
|
|
|
|
// 12: right surround direct
|
|
AV_CHAN_SURROUND_DIRECT_RIGHT,
|
|
|
|
// 13: left side surround
|
|
AV_CHAN_SIDE_LEFT,
|
|
|
|
// 14: right side surround
|
|
AV_CHAN_SIDE_RIGHT,
|
|
|
|
// 15: left wide front
|
|
AV_CHAN_WIDE_LEFT,
|
|
|
|
// 16: right wide front
|
|
AV_CHAN_WIDE_RIGHT,
|
|
|
|
// 17: left front vertical height
|
|
AV_CHAN_TOP_FRONT_LEFT,
|
|
|
|
// 18: right front vertical height
|
|
AV_CHAN_TOP_FRONT_RIGHT,
|
|
|
|
// 19: centre front vertical height
|
|
AV_CHAN_TOP_FRONT_CENTER,
|
|
|
|
// 20: left surround vertical height rear
|
|
AV_CHAN_TOP_BACK_LEFT,
|
|
|
|
// 21: right surround vertical height rear
|
|
AV_CHAN_TOP_BACK_RIGHT,
|
|
|
|
// 22: centre vertical height rear
|
|
AV_CHAN_TOP_BACK_CENTER,
|
|
|
|
// 23: left vertical height side surround
|
|
AV_CHAN_TOP_SIDE_LEFT,
|
|
|
|
// 24: right vertical height side surround
|
|
AV_CHAN_TOP_SIDE_RIGHT,
|
|
|
|
// 25: top centre surround
|
|
AV_CHAN_TOP_CENTER,
|
|
|
|
// 26: low frequency enhancement 2
|
|
AV_CHAN_LOW_FREQUENCY_2,
|
|
|
|
// 27: left front vertical bottom
|
|
AV_CHAN_BOTTOM_FRONT_LEFT,
|
|
|
|
// 28: right front vertical bottom
|
|
AV_CHAN_BOTTOM_FRONT_RIGHT,
|
|
|
|
// 29: centre front vertical bottom
|
|
AV_CHAN_BOTTOM_FRONT_CENTER,
|
|
|
|
// 30: left vertical height surround
|
|
// TODO
|
|
AV_CHAN_NONE,
|
|
|
|
// 31: right vertical height surround
|
|
// TODO
|
|
AV_CHAN_NONE,
|
|
|
|
// 32, 33, 34, 35, reserved
|
|
AV_CHAN_NONE,
|
|
AV_CHAN_NONE,
|
|
AV_CHAN_NONE,
|
|
AV_CHAN_NONE,
|
|
|
|
// 36: low frequency enhancement 3
|
|
AV_CHAN_NONE,
|
|
|
|
// 37: left edge of screen
|
|
AV_CHAN_NONE,
|
|
// 38: right edge of screen
|
|
AV_CHAN_NONE,
|
|
// 39: half-way between centre of screen and left edge of screen
|
|
AV_CHAN_NONE,
|
|
// 40: half-way between centre of screen and right edge of screen
|
|
AV_CHAN_NONE,
|
|
|
|
// 41: left back surround
|
|
AV_CHAN_NONE,
|
|
|
|
// 42: right back surround
|
|
AV_CHAN_NONE,
|
|
|
|
// 43 - 125: reserved
|
|
// 126: explicit position
|
|
// 127: unknown /undefined
|
|
};
|
|
|
|
int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config)
|
|
{
|
|
// Set default value which means any setup in 23001-8
|
|
*config = 0;
|
|
for (int i = 0; i < FF_ARRAY_ELEMS(iso_channel_configuration); i++) {
|
|
if (!av_channel_layout_compare(layout, iso_channel_configuration + i)) {
|
|
*config = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout)
|
|
{
|
|
if (config > 0 && config < FF_ARRAY_ELEMS(iso_channel_configuration)) {
|
|
av_channel_layout_copy(layout, &iso_channel_configuration[config]);
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int ff_mov_get_channel_positions_from_layout(const AVChannelLayout *layout,
|
|
uint8_t *position, int position_num)
|
|
{
|
|
enum AVChannel channel;
|
|
|
|
if (position_num < layout->nb_channels)
|
|
return AVERROR(EINVAL);
|
|
|
|
for (int i = 0; i < layout->nb_channels; i++) {
|
|
position[i] = 127;
|
|
channel = av_channel_layout_channel_from_index(layout, i);
|
|
if (channel == AV_CHAN_NONE)
|
|
return AVERROR(EINVAL);
|
|
|
|
for (int j = 0; j < FF_ARRAY_ELEMS(iso_channel_position); j++) {
|
|
if (iso_channel_position[j] == channel) {
|
|
position[i] = j;
|
|
break;
|
|
}
|
|
}
|
|
if (position[i] == 127)
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_mov_read_chnl(AVFormatContext *s, AVIOContext *pb, AVStream *st)
|
|
{
|
|
int stream_structure = avio_r8(pb);
|
|
int ret;
|
|
|
|
// stream carries channels
|
|
if (stream_structure & 1) {
|
|
int layout = avio_r8(pb);
|
|
|
|
av_log(s, AV_LOG_TRACE, "'chnl' layout %d\n", layout);
|
|
if (!layout) {
|
|
AVChannelLayout *ch_layout = &st->codecpar->ch_layout;
|
|
int nb_channels = ch_layout->nb_channels;
|
|
|
|
av_channel_layout_uninit(ch_layout);
|
|
ret = av_channel_layout_custom_init(ch_layout, nb_channels);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (int i = 0; i < nb_channels; i++) {
|
|
int speaker_pos = avio_r8(pb);
|
|
enum AVChannel channel;
|
|
|
|
if (speaker_pos == 126) // explicit position
|
|
avio_skip(pb, 3); // azimuth, elevation
|
|
|
|
if (speaker_pos >= FF_ARRAY_ELEMS(iso_channel_position))
|
|
channel = AV_CHAN_NONE;
|
|
else
|
|
channel = iso_channel_position[speaker_pos];
|
|
|
|
if (channel == AV_CHAN_NONE) {
|
|
av_log(s, AV_LOG_WARNING, "speaker position %d is not implemented\n", speaker_pos);
|
|
channel = AV_CHAN_UNKNOWN;
|
|
}
|
|
|
|
ch_layout->u.map[i].id = channel;
|
|
}
|
|
|
|
ret = av_channel_layout_retype(ch_layout, 0, AV_CHANNEL_LAYOUT_RETYPE_FLAG_CANONICAL);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
uint64_t omitted_channel_map = avio_rb64(pb);
|
|
|
|
if (omitted_channel_map) {
|
|
avpriv_request_sample(s, "omitted_channel_map 0x%" PRIx64 " != 0",
|
|
omitted_channel_map);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
ff_mov_get_channel_layout_from_config(layout, &st->codecpar->ch_layout);
|
|
}
|
|
}
|
|
|
|
// stream carries objects
|
|
if (stream_structure & 2) {
|
|
int obj_count = avio_r8(pb);
|
|
av_log(s, AV_LOG_TRACE, "'chnl' with object_count %d\n", obj_count);
|
|
}
|
|
|
|
return 0;
|
|
}
|