| /* |
| * Copyright (c) 2011 Justin Ruggles |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; 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 <assert.h> |
| #include <stdint.h> |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/mem.h" |
| #include "libavcodec/codec_id.h" |
| #include "mov_chan.h" |
| |
| enum { |
| c_L = AV_CHAN_FRONT_LEFT, |
| c_R = AV_CHAN_FRONT_RIGHT, |
| c_C = AV_CHAN_FRONT_CENTER, |
| c_LFE = AV_CHAN_LOW_FREQUENCY, |
| c_Rls = AV_CHAN_BACK_LEFT, |
| c_Rrs = AV_CHAN_BACK_RIGHT, |
| c_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER, |
| c_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER, |
| c_Cs = AV_CHAN_BACK_CENTER, |
| c_Ls = AV_CHAN_SIDE_LEFT, |
| c_Rs = AV_CHAN_SIDE_RIGHT, |
| c_Ts = AV_CHAN_TOP_CENTER, |
| c_Vhl = AV_CHAN_TOP_FRONT_LEFT, |
| c_Vhc = AV_CHAN_TOP_FRONT_CENTER, |
| c_Vhr = AV_CHAN_TOP_FRONT_RIGHT, |
| c_Rlt = AV_CHAN_TOP_BACK_LEFT, |
| // = AV_CHAN_TOP_BACK_CENTER, |
| c_Rrt = AV_CHAN_TOP_BACK_RIGHT, |
| c_Lt = AV_CHAN_STEREO_LEFT, |
| c_Rt = AV_CHAN_STEREO_RIGHT, |
| c_Lw = AV_CHAN_WIDE_LEFT, |
| c_Rw = AV_CHAN_WIDE_RIGHT, |
| c_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT, |
| c_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT, |
| c_LFE2 = AV_CHAN_LOW_FREQUENCY_2, |
| // = AV_CHAN_TOP_SIDE_LEFT, |
| // = AV_CHAN_TOP_SIDE_RIGHT, |
| // = AV_CHAN_BOTTOM_FRONT_CENTER, |
| // = AV_CHAN_BOTTOM_FRONT_LEFT, |
| // = AV_CHAN_BOTTOM_FRONT_RIGHT, |
| c_W = AV_CHAN_AMBISONIC_BASE, |
| c_Y = AV_CHAN_AMBISONIC_BASE + 1, |
| c_Z = AV_CHAN_AMBISONIC_BASE + 2, |
| c_X = AV_CHAN_AMBISONIC_BASE + 3, |
| /* The following have no exact counterparts */ |
| c_LFE1 = AV_CHAN_LOW_FREQUENCY, |
| c_Csd = AV_CHAN_NONE, |
| c_HI = AV_CHAN_NONE, |
| c_VI = AV_CHAN_NONE, |
| c_Haptic = AV_CHAN_NONE, |
| }; |
| |
| enum { |
| iso_L = AV_CHAN_FRONT_LEFT, |
| iso_R = AV_CHAN_FRONT_RIGHT, |
| iso_C = AV_CHAN_FRONT_CENTER, |
| iso_LFE = AV_CHAN_LOW_FREQUENCY, |
| iso_Lsr = AV_CHAN_BACK_LEFT, |
| iso_Rsr = AV_CHAN_BACK_RIGHT, |
| iso_Lc = AV_CHAN_FRONT_LEFT_OF_CENTER, |
| iso_Rc = AV_CHAN_FRONT_RIGHT_OF_CENTER, |
| iso_Cs = AV_CHAN_BACK_CENTER, |
| iso_Ls = AV_CHAN_SIDE_LEFT, |
| iso_Rs = AV_CHAN_SIDE_RIGHT, |
| iso_Ts = AV_CHAN_TOP_CENTER, |
| iso_Lv = AV_CHAN_TOP_FRONT_LEFT, |
| iso_Cv = AV_CHAN_TOP_FRONT_CENTER, |
| iso_Rv = AV_CHAN_TOP_FRONT_RIGHT, |
| iso_Lvr = AV_CHAN_TOP_BACK_LEFT, |
| iso_Cvr = AV_CHAN_TOP_BACK_CENTER, |
| iso_Rvr = AV_CHAN_TOP_BACK_RIGHT, |
| // = AV_CHAN_STEREO_LEFT, |
| // = AV_CHAN_STEREO_RIGHT, |
| iso_Lw = AV_CHAN_WIDE_LEFT, |
| iso_Rw = AV_CHAN_WIDE_RIGHT, |
| iso_Lsd = AV_CHAN_SURROUND_DIRECT_LEFT, |
| iso_Rsd = AV_CHAN_SURROUND_DIRECT_RIGHT, |
| iso_LFE2 = AV_CHAN_LOW_FREQUENCY_2, |
| iso_Lvss = AV_CHAN_TOP_SIDE_LEFT, |
| iso_Rvss = AV_CHAN_TOP_SIDE_RIGHT, |
| iso_Cb = AV_CHAN_BOTTOM_FRONT_CENTER, |
| iso_Lb = AV_CHAN_BOTTOM_FRONT_LEFT, |
| iso_Rb = AV_CHAN_BOTTOM_FRONT_RIGHT, |
| iso_Lss = AV_CHAN_SIDE_SURROUND_LEFT, |
| iso_Rss = AV_CHAN_SIDE_SURROUND_RIGHT, |
| /* The following have no exact counterparts */ |
| iso_Lvs = AV_CHAN_NONE, |
| iso_Rvs = AV_CHAN_NONE, |
| }; |
| |
| struct MovChannelLayoutMap { |
| union { |
| uint32_t tag; |
| enum AVChannel id; |
| }; |
| }; |
| |
| #define TAG(_tag, _cnt) {.tag = _tag} |
| #define ID(_0) {.id = c_##_0} |
| #define CHLIST01(_tag, _1) CHLIST(_tag, 1, ID(_1)) |
| #define CHLIST02(_tag, _1, _2) CHLIST(_tag, 2, ID(_1), ID(_2)) |
| #define CHLIST03(_tag, _1, _2, _3) CHLIST(_tag, 3, ID(_1), ID(_2), ID(_3)) |
| #define CHLIST04(_tag, _1, _2, _3, _4) CHLIST(_tag, 4, ID(_1), ID(_2), ID(_3), ID(_4)) |
| #define CHLIST05(_tag, _1, _2, _3, _4, _5) CHLIST(_tag, 5, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5)) |
| #define CHLIST06(_tag, _1, _2, _3, _4, _5, _6) CHLIST(_tag, 6, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6)) |
| #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)) |
| #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)) |
| #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)) |
| #define CHLIST16(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) \ |
| CHLIST(_tag, 16, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \ |
| ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16)) |
| #define CHLIST21(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21) \ |
| CHLIST(_tag, 21, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \ |
| ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), ID(_21)) |
| #define CHLIST24(_tag, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24) \ |
| CHLIST(_tag, 24, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9), ID(_10), \ |
| ID(_11), ID(_12), ID(_13), ID(_14), ID(_15), ID(_16), ID(_17), ID(_18), ID(_19), ID(_20), \ |
| ID(_21), ID(_22), ID(_23), ID(_24)) |
| |
| #define MOV_CH_LAYOUT_MAP \ |
| CHLIST01( MOV_CH_LAYOUT_MONO, C )\ |
| CHLIST02( MOV_CH_LAYOUT_STEREO, L, R )\ |
| CHLIST02( MOV_CH_LAYOUT_STEREOHEADPHONES, L, R )\ |
| CHLIST02( MOV_CH_LAYOUT_BINAURAL, L, R )\ |
| CHLIST02( MOV_CH_LAYOUT_MIDSIDE, L, R )\ |
| CHLIST02( MOV_CH_LAYOUT_XY, L, R )\ |
| CHLIST02( MOV_CH_LAYOUT_MATRIXSTEREO, Lt, Rt )\ |
| CHLIST02( MOV_CH_LAYOUT_AC3_1_0_1, C, LFE )\ |
| CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_A, L, R, C )\ |
| CHLIST03( MOV_CH_LAYOUT_MPEG_3_0_B, C, L, R )\ |
| CHLIST03( MOV_CH_LAYOUT_AC3_3_0, L, C, R )\ |
| CHLIST03( MOV_CH_LAYOUT_ITU_2_1, L, R, Cs )\ |
| CHLIST03( MOV_CH_LAYOUT_DVD_4, L, R, LFE )\ |
| CHLIST04( MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, W, X, Y, Z )\ |
| CHLIST04( MOV_CH_LAYOUT_QUADRAPHONIC, L, R, Rls, Rrs )\ |
| CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_A, L, R, C, Cs )\ |
| CHLIST04( MOV_CH_LAYOUT_MPEG_4_0_B, C, L, R, Cs )\ |
| CHLIST04( MOV_CH_LAYOUT_AC3_3_1, L, C, R, Cs )\ |
| CHLIST04( MOV_CH_LAYOUT_ITU_2_2, L, R, Ls, Rs )\ |
| CHLIST04( MOV_CH_LAYOUT_DVD_5, L, R, LFE, Cs )\ |
| CHLIST04( MOV_CH_LAYOUT_AC3_2_1_1, L, R, Cs, LFE )\ |
| CHLIST04( MOV_CH_LAYOUT_DVD_10, L, R, C, LFE )\ |
| CHLIST04( MOV_CH_LAYOUT_AC3_3_0_1, L, C, R, LFE )\ |
| CHLIST04( MOV_CH_LAYOUT_DTS_3_1, C, L, R, LFE )\ |
| CHLIST05( MOV_CH_LAYOUT_PENTAGONAL, L, R, Rls, Rrs, C )\ |
| CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_A, L, R, C, Ls, Rs )\ |
| CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_B, L, R, Ls, Rs, C )\ |
| CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_C, L, C, R, Ls, Rs )\ |
| CHLIST05( MOV_CH_LAYOUT_MPEG_5_0_D, C, L, R, Ls, Rs )\ |
| CHLIST05( MOV_CH_LAYOUT_DVD_6, L, R, LFE, Ls, Rs )\ |
| CHLIST05( MOV_CH_LAYOUT_DVD_18, L, R, Ls, Rs, LFE )\ |
| CHLIST05( MOV_CH_LAYOUT_DVD_11, L, R, C, LFE, Cs )\ |
| CHLIST05( MOV_CH_LAYOUT_AC3_3_1_1, L, C, R, Cs, LFE )\ |
| CHLIST05( MOV_CH_LAYOUT_DTS_4_1, C, L, R, Cs, LFE )\ |
| CHLIST06( MOV_CH_LAYOUT_HEXAGONAL, L, R, Rls, Rrs, C, Cs )\ |
| CHLIST06( MOV_CH_LAYOUT_DTS_6_0_C, C, Cs, L, R, Rls, Rrs )\ |
| CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_A, L, R, C, LFE, Ls, Rs )\ |
| CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_B, L, R, Ls, Rs, C, LFE )\ |
| CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_C, L, C, R, Ls, Rs, LFE )\ |
| CHLIST06( MOV_CH_LAYOUT_MPEG_5_1_D, C, L, R, Ls, Rs, LFE )\ |
| CHLIST06( MOV_CH_LAYOUT_AUDIOUNIT_6_0, L, R, Ls, Rs, C, Cs )\ |
| CHLIST06( MOV_CH_LAYOUT_AAC_6_0, C, L, R, Ls, Rs, Cs )\ |
| CHLIST06( MOV_CH_LAYOUT_EAC3_6_0_A, L, C, R, Ls, Rs, Cs )\ |
| CHLIST06( MOV_CH_LAYOUT_DTS_6_0_A, Lc, Rc, L, R, Ls, Rs )\ |
| CHLIST06( MOV_CH_LAYOUT_DTS_6_0_B, C, L, R, Rls, Rrs, Ts )\ |
| CHLIST07( MOV_CH_LAYOUT_MPEG_6_1_A, L, R, C, LFE, Ls, Rs, Cs )\ |
| CHLIST07( MOV_CH_LAYOUT_AAC_6_1, C, L, R, Ls, Rs, Cs, LFE )\ |
| CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_A, L, C, R, Ls, Rs, LFE, Cs )\ |
| CHLIST07( MOV_CH_LAYOUT_DTS_6_1_D, C, L, R, Ls, Rs, LFE, Cs )\ |
| CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0, L, R, Ls, Rs, C, Rls, Rrs )\ |
| CHLIST07( MOV_CH_LAYOUT_AAC_7_0, C, L, R, Ls, Rs, Rls, Rrs )\ |
| CHLIST07( MOV_CH_LAYOUT_EAC3_7_0_A, L, C, R, Ls, Rs, Rls, Rrs )\ |
| CHLIST07( MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, L, R, Ls, Rs, C, Lc, Rc )\ |
| CHLIST07( MOV_CH_LAYOUT_DTS_7_0, Lc, C, Rc, L, R, Ls, Rs )\ |
| CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_B, L, C, R, Ls, Rs, LFE, Ts )\ |
| CHLIST07( MOV_CH_LAYOUT_EAC3_6_1_C, L, C, R, Ls, Rs, LFE, Vhc )\ |
| CHLIST07( MOV_CH_LAYOUT_DTS_6_1_A, Lc, Rc, L, R, Ls, Rs, LFE )\ |
| CHLIST07( MOV_CH_LAYOUT_DTS_6_1_B, C, L, R, Rls, Rrs, Ts, LFE )\ |
| CHLIST07( MOV_CH_LAYOUT_DTS_6_1_C, C, Cs, L, R, Rls, Rrs, LFE )\ |
| CHLIST08( MOV_CH_LAYOUT_OCTAGONAL, L, R, Rls, Rrs, C, Cs, Ls, Rs )\ |
| CHLIST08( MOV_CH_LAYOUT_AAC_OCTAGONAL, C, L, R, Ls, Rs, Rls, Rrs, Cs )\ |
| CHLIST08( MOV_CH_LAYOUT_CUBE, L, R, Rls, Rrs, Vhl, Vhr, Rlt, Rrt )\ |
| CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_A, L, R, C, LFE, Ls, Rs, Lc, Rc )\ |
| CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_B, C, Lc, Rc, L, R, Ls, Rs, LFE )\ |
| CHLIST08( MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, L, R, Ls, Rs, C, LFE, Lc, Rc )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_B, L, C, R, Ls, Rs, LFE, Lc, Rc )\ |
| CHLIST08( MOV_CH_LAYOUT_DTS_7_1, Lc, C, Rc, L, R, Ls, Rs, LFE )\ |
| CHLIST08( MOV_CH_LAYOUT_MPEG_7_1_C, L, R, C, LFE, Ls, Rs, Rls, Rrs )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_A, L, C, R, Ls, Rs, LFE, Rls, Rrs )\ |
| CHLIST08( MOV_CH_LAYOUT_SMPTE_DTV, L, R, C, LFE, Ls, Rs, Lt, Rt )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_C, L, C, R, Ls, Rs, LFE, Lsd, Rsd )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_D, L, C, R, Ls, Rs, LFE, Lw, Rw )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_E, L, C, R, Ls, Rs, LFE, Vhl, Vhr )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_F, L, C, R, Ls, Rs, LFE, Cs, Ts )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_G, L, C, R, Ls, Rs, LFE, Cs, Vhc )\ |
| CHLIST08( MOV_CH_LAYOUT_EAC3_7_1_H, L, C, R, Ls, Rs, LFE, Ts, Vhc )\ |
| CHLIST08( MOV_CH_LAYOUT_DTS_8_0_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs )\ |
| CHLIST08( MOV_CH_LAYOUT_DTS_8_0_B, Lc, C, Rc, L, R, Ls, Cs, Rs )\ |
| CHLIST09( MOV_CH_LAYOUT_DTS_8_1_A, Lc, Rc, L, R, Ls, Rs, Rls, Rrs, LFE )\ |
| CHLIST09( MOV_CH_LAYOUT_DTS_8_1_B, Lc, C, Rc, L, R, Ls, Cs, Rs, LFE )\ |
| CHLIST16( MOV_CH_LAYOUT_TMH_10_2_STD, L, R, C, Vhc, Lsd, Rsd, Ls, Rs, Vhl, Vhr, Lw, Rw, Csd, Cs, LFE1, LFE2 )\ |
| 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 )\ |
| |
| #define CHLIST(_tag, _cnt, ...) static_assert((_tag & 0xffff) == _cnt, "Channel count of " #_tag " is not " #_cnt); |
| MOV_CH_LAYOUT_MAP |
| #undef CHLIST |
| #define CHLIST(_tag, _cnt, ...) TAG(_tag, _cnt), __VA_ARGS__, |
| static const struct MovChannelLayoutMap mov_ch_layout_map[] = { |
| MOV_CH_LAYOUT_MAP |
| { {0} }, |
| }; |
| |
| #undef ID |
| #undef TAG |
| #define ID(_0) {.id = iso_##_0} |
| #define TAG(_tag, _cnt) {.tag = (_tag << 16) | _cnt} |
| |
| /* ISO/IEC 23001-8 */ |
| static const struct MovChannelLayoutMap iso_ch_layout_map[] = { |
| CHLIST01( 1, C ) |
| CHLIST02( 2, L, R ) |
| CHLIST03( 3, C, L, R ) |
| CHLIST04( 4, C, L, R, Cs ) |
| CHLIST05( 5, C, L, R, Ls, Rs ) |
| CHLIST06( 6, C, L, R, Ls, Rs, LFE ) |
| CHLIST08( 7, C, Lc, Rc, L, R, Ls, Rs, LFE ) |
| CHLIST03( 9, L, R, Cs ) |
| CHLIST04( 10, L, R, Ls, Rs ) |
| CHLIST07( 11, C, L, R, Ls, Rs, Cs, LFE ) |
| CHLIST08( 12, C, L, R, Ls, Rs, Lsr, Rsr, LFE ) |
| CHLIST24( 13, C, Lc, Rc, L, R, Lss, Rss, Lsr, Rsr, Cs, LFE, LFE2, Cv, Lv, Rv, Lvss, Rvss, Ts, Lvr, Rvr, Cvr, Cb, Lb, Rb) |
| CHLIST08( 14, C, L, R, Ls, Rs, LFE, Lv, Rv) |
| { {0} }, |
| }; |
| |
| 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, |
| }; |
| |
| 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, |
| 0, |
| }; |
| |
| static const struct { |
| enum AVCodecID codec_id; |
| const enum MovChannelLayoutTag *layouts; |
| } mov_codec_ch_layouts[] = { |
| { 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 }, |
| }; |
| |
| static const struct MovChannelLayoutMap* find_layout_map(uint32_t tag, const struct MovChannelLayoutMap *map) |
| { |
| for (int i = 0; map[i].tag & 0xffff; i += 1 + (map[i].tag & 0xffff)) |
| if (map[i].tag == tag) |
| return &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, uint64_t omitted_channel_map, const struct MovChannelLayoutMap *map) |
| { |
| const struct MovChannelLayoutMap *layout_map; |
| |
| /* find the channel layout for the specified layout tag */ |
| layout_map = find_layout_map(tag, map); |
| if (layout_map) { |
| int ret; |
| int map_layout_nb_channels = tag & 0xFFFF; |
| int nb_channels = ch_layout->nb_channels; |
| |
| /* Omitted channel bits must not exceed number of channels in map */ |
| if (omitted_channel_map >> map_layout_nb_channels) |
| return AVERROR_INVALIDDATA; |
| |
| 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, idx = 0; i < map_layout_nb_channels && idx < nb_channels; i++, omitted_channel_map >>= 1) { |
| if (!(omitted_channel_map & 1)) { |
| enum AVChannel id = layout_map[i].id; |
| ch_layout->u.map[idx++].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; |
| } |
| |
| static int is_layout_valid_for_tag(const AVChannelLayout *ch_layout, uint32_t tag, const struct MovChannelLayoutMap *map) |
| { |
| const struct MovChannelLayoutMap *layout_map; |
| int channels = ch_layout->nb_channels; |
| |
| /* get the layout map based on the channel count */ |
| if ((tag & 0xFFFF) != channels) |
| return 0; |
| |
| layout_map = find_layout_map(tag, map); |
| if (layout_map) { |
| int i; |
| for (i = 0; i < channels; i++) { |
| if (av_channel_layout_channel_from_index(ch_layout, i) != layout_map[i].id) |
| break; |
| } |
| if (i == channels) |
| return 1; |
| } |
| return 0; |
| } |
| |
| int ff_mov_get_channel_layout_tag(const AVCodecParameters *par, |
| uint32_t *layout, |
| uint32_t *bitmap, |
| uint32_t **pchannel_desc) |
| { |
| int i; |
| 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) { |
| /* find the layout tag for the specified channel layout */ |
| for (i = 0; layouts[i] != 0; i++) |
| if (is_layout_valid_for_tag(&par->ch_layout, layouts[i], mov_ch_layout_map)) |
| 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; |
| |
| if (!num_descr || num_descr < nb_channels) { |
| av_log(s, AV_LOG_ERROR, "got %d channel descriptions when at least %d were needed\n", |
| num_descr, nb_channels); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (num_descr > nb_channels) { |
| int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT; |
| av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING, |
| "got %d channel descriptions when number of channels is %d\n", |
| num_descr, nb_channels); |
| if (strict) |
| return AVERROR_INVALIDDATA; |
| av_log(s, AV_LOG_WARNING, "capping channel descriptions to the number of channels\n"); |
| 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, 0, mov_ch_layout_map); |
| 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, table 8 */ |
| static const enum AVChannel iso_channel_position[] = { |
| [0] = AV_CHAN_FRONT_LEFT, // left front |
| [1] = AV_CHAN_FRONT_RIGHT, // right front |
| [2] = AV_CHAN_FRONT_CENTER, // centre front |
| [3] = AV_CHAN_LOW_FREQUENCY, // low frequency enhancement |
| [4] = AV_CHAN_SIDE_LEFT, // left surround |
| [5] = AV_CHAN_SIDE_RIGHT, // right surround |
| [6] = AV_CHAN_FRONT_LEFT_OF_CENTER, // left front centre |
| [7] = AV_CHAN_FRONT_RIGHT_OF_CENTER, // right front centre |
| [8] = AV_CHAN_BACK_LEFT, // rear surround left |
| [9] = AV_CHAN_BACK_RIGHT, // rear surround right |
| [10] = AV_CHAN_BACK_CENTER, // rear centre |
| [11] = AV_CHAN_SURROUND_DIRECT_LEFT, // left surround direct |
| [12] = AV_CHAN_SURROUND_DIRECT_RIGHT, // right surround direct |
| [13] = AV_CHAN_SIDE_SURROUND_LEFT, // left side surround |
| [14] = AV_CHAN_SIDE_SURROUND_RIGHT, // right side surround |
| [15] = AV_CHAN_WIDE_LEFT, // left wide front |
| [16] = AV_CHAN_WIDE_RIGHT, // right wide front |
| [17] = AV_CHAN_TOP_FRONT_LEFT, // left front vertical height |
| [18] = AV_CHAN_TOP_FRONT_RIGHT, // right front vertical height |
| [19] = AV_CHAN_TOP_FRONT_CENTER, // centre front vertical height |
| [20] = AV_CHAN_TOP_BACK_LEFT, // left surround vertical height rear |
| [21] = AV_CHAN_TOP_BACK_RIGHT, // right surround vertical height rear |
| [22] = AV_CHAN_TOP_BACK_CENTER, // centre vertical height rear |
| [23] = AV_CHAN_TOP_SIDE_LEFT, // left vertical height side surround |
| [24] = AV_CHAN_TOP_SIDE_RIGHT, // right vertical height side surround |
| [25] = AV_CHAN_TOP_CENTER, // top centre surround |
| [26] = AV_CHAN_LOW_FREQUENCY_2, // low frequency enhancement 2 |
| [27] = AV_CHAN_BOTTOM_FRONT_LEFT, // left front vertical bottom |
| [28] = AV_CHAN_BOTTOM_FRONT_RIGHT, // right front vertical bottom |
| [29] = AV_CHAN_BOTTOM_FRONT_CENTER, // centre front vertical bottom |
| [30] = AV_CHAN_TOP_SURROUND_LEFT, // left vertical height surround |
| [31] = AV_CHAN_TOP_SURROUND_RIGHT, // right vertical height surround |
| |
| [32] = AV_CHAN_NONE, // reserved |
| [33] = AV_CHAN_NONE, // reserved |
| [34] = AV_CHAN_NONE, // reserved |
| [35] = AV_CHAN_NONE, // reserved |
| |
| [36] = AV_CHAN_NONE, // low frequency enhancement 3 |
| [37] = AV_CHAN_NONE, // left edge of screen |
| [38] = AV_CHAN_NONE, // right edge of screen |
| [39] = AV_CHAN_NONE, // half-way between centre of screen and left edge of screen |
| [40] = AV_CHAN_NONE, // half-way between centre of screen and right edge of screen |
| [41] = AV_CHAN_NONE, // left back surround |
| [42] = AV_CHAN_NONE, // right back surround |
| |
| // 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; iso_ch_layout_map[i].tag & 0xffff; i += 1 + (iso_ch_layout_map[i].tag & 0xffff)) { |
| if (is_layout_valid_for_tag(layout, iso_ch_layout_map[i].tag, &iso_ch_layout_map[i])) { |
| *config = iso_ch_layout_map[i].tag >> 16; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int ff_mov_get_channel_layout_from_config(int config, AVChannelLayout *layout, uint64_t omitted_channel_map) |
| { |
| if (config > 0) { |
| uint32_t layout_tag; |
| int nb_omitted_channels = av_popcount64(omitted_channel_map); |
| |
| if (layout->nb_channels <= 0 || layout->nb_channels > UINT16_MAX - nb_omitted_channels) |
| return AVERROR_INVALIDDATA; |
| |
| layout_tag = (config << 16) | (layout->nb_channels + nb_omitted_channels); |
| return mov_get_channel_layout(layout, layout_tag, omitted_channel_map, iso_ch_layout_map); |
| } |
| 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); |
| ret = ff_mov_get_channel_layout_from_config(layout, &st->codecpar->ch_layout, omitted_channel_map); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| // 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; |
| } |
