| /* | |
| * 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 <stdint.h> | |
| #include "libavutil/avassert.h" | |
| #include "libavutil/channel_layout.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, | |
| }; | |
| struct MovChannelLayoutMap { | |
| union { | |
| uint32_t tag; | |
| enum AVChannel id; | |
| }; | |
| }; | |
| #define TAG(_0) {.tag = _0} | |
| #define ID(_0) {.id = c_##_0} | |
| #define CHLIST(_0, ...) TAG(_0), __VA_ARGS__ | |
| #define CHLIST01(_0, _1) CHLIST(_0, ID(_1)) | |
| #define CHLIST02(_0, _1, _2) CHLIST(_0, ID(_1), ID(_2)) | |
| #define CHLIST03(_0, _1, _2, _3) CHLIST(_0, ID(_1), ID(_2), ID(_3)) | |
| #define CHLIST04(_0, _1, _2, _3, _4) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4)) | |
| #define CHLIST05(_0, _1, _2, _3, _4, _5) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5)) | |
| #define CHLIST06(_0, _1, _2, _3, _4, _5, _6) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6)) | |
| #define CHLIST07(_0, _1, _2, _3, _4, _5, _6, _7) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7)) | |
| #define CHLIST08(_0, _1, _2, _3, _4, _5, _6, _7, _8) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8)) | |
| #define CHLIST09(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9) CHLIST(_0, ID(_1), ID(_2), ID(_3), ID(_4), ID(_5), ID(_6), ID(_7), ID(_8), ID(_9)) | |
| #define CHLIST16(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) \ | |
| CHLIST(_0, 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(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21) \ | |
| CHLIST(_0, 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)) | |
| static const struct MovChannelLayoutMap 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 ), //C, sides | |
| CHLIST02( MOV_CH_LAYOUT_XY, L, R ), //X (left ), Y (right ) | |
| 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), | |
| }; | |
| 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) | |
| { | |
| #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1 | |
| { | |
| int i; | |
| for (i = 0; i < FF_ARRAY_ELEMS(mov_ch_layout_map); i += 1 + (mov_ch_layout_map[i].tag & 0xffff)) | |
| av_assert2(mov_ch_layout_map[i].tag & 0xffff0000); | |
| av_assert2(i == FF_ARRAY_ELEMS(mov_ch_layout_map)); | |
| } | |
| #endif | |
| 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; | |
| 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); | |
| 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; | |
| } |