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#include <stdint.h> |
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#include "libavutil/channel_layout.h" |
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#include "libavcodec/codec_id.h" |
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#include "mov_chan.h" |
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struct MovChannelLayoutMap { |
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uint32_t tag; |
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uint64_t layout; |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_misc[] = { |
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{ MOV_CH_LAYOUT_USE_DESCRIPTIONS, 0 }, |
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{ MOV_CH_LAYOUT_USE_BITMAP, 0 }, |
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{ MOV_CH_LAYOUT_DISCRETEINORDER, 0 }, |
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{ MOV_CH_LAYOUT_UNKNOWN, 0 }, |
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{ MOV_CH_LAYOUT_TMH_10_2_STD, 0 }, |
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{ MOV_CH_LAYOUT_TMH_10_2_FULL, 0 }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[] = { |
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{ MOV_CH_LAYOUT_MONO, AV_CH_LAYOUT_MONO }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[] = { |
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{ MOV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO }, |
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{ MOV_CH_LAYOUT_STEREOHEADPHONES, AV_CH_LAYOUT_STEREO }, |
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{ MOV_CH_LAYOUT_BINAURAL, AV_CH_LAYOUT_STEREO }, |
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{ MOV_CH_LAYOUT_MIDSIDE, AV_CH_LAYOUT_STEREO }, |
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{ MOV_CH_LAYOUT_XY, AV_CH_LAYOUT_STEREO }, |
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{ MOV_CH_LAYOUT_MATRIXSTEREO, AV_CH_LAYOUT_STEREO_DOWNMIX }, |
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{ MOV_CH_LAYOUT_AC3_1_0_1, AV_CH_LAYOUT_MONO | |
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AV_CH_LOW_FREQUENCY }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[] = { |
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{ MOV_CH_LAYOUT_MPEG_3_0_A, AV_CH_LAYOUT_SURROUND }, |
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{ MOV_CH_LAYOUT_MPEG_3_0_B, AV_CH_LAYOUT_SURROUND }, |
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{ MOV_CH_LAYOUT_AC3_3_0, AV_CH_LAYOUT_SURROUND }, |
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{ MOV_CH_LAYOUT_ITU_2_1, AV_CH_LAYOUT_2_1 }, |
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{ MOV_CH_LAYOUT_DVD_4, AV_CH_LAYOUT_2POINT1 }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[] = { |
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{ MOV_CH_LAYOUT_AMBISONIC_B_FORMAT, 0 }, |
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{ MOV_CH_LAYOUT_QUADRAPHONIC, AV_CH_LAYOUT_QUAD }, |
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{ MOV_CH_LAYOUT_MPEG_4_0_A, AV_CH_LAYOUT_4POINT0 }, |
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{ MOV_CH_LAYOUT_MPEG_4_0_B, AV_CH_LAYOUT_4POINT0 }, |
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{ MOV_CH_LAYOUT_AC3_3_1, AV_CH_LAYOUT_4POINT0 }, |
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{ MOV_CH_LAYOUT_ITU_2_2, AV_CH_LAYOUT_2_2 }, |
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{ MOV_CH_LAYOUT_DVD_5, AV_CH_LAYOUT_2_1 | |
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AV_CH_LOW_FREQUENCY }, |
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{ MOV_CH_LAYOUT_AC3_2_1_1, AV_CH_LAYOUT_2_1 | |
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AV_CH_LOW_FREQUENCY }, |
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{ MOV_CH_LAYOUT_DVD_10, AV_CH_LAYOUT_3POINT1 }, |
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{ MOV_CH_LAYOUT_AC3_3_0_1, AV_CH_LAYOUT_3POINT1 }, |
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{ MOV_CH_LAYOUT_DTS_3_1, AV_CH_LAYOUT_3POINT1 }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[] = { |
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{ MOV_CH_LAYOUT_PENTAGONAL, AV_CH_LAYOUT_5POINT0_BACK }, |
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{ MOV_CH_LAYOUT_MPEG_5_0_A, AV_CH_LAYOUT_5POINT0 }, |
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{ MOV_CH_LAYOUT_MPEG_5_0_B, AV_CH_LAYOUT_5POINT0 }, |
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{ MOV_CH_LAYOUT_MPEG_5_0_C, AV_CH_LAYOUT_5POINT0 }, |
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{ MOV_CH_LAYOUT_MPEG_5_0_D, AV_CH_LAYOUT_5POINT0 }, |
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{ MOV_CH_LAYOUT_DVD_6, AV_CH_LAYOUT_2_2 | |
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AV_CH_LOW_FREQUENCY }, |
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{ MOV_CH_LAYOUT_DVD_18, AV_CH_LAYOUT_2_2 | |
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AV_CH_LOW_FREQUENCY }, |
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{ MOV_CH_LAYOUT_DVD_11, AV_CH_LAYOUT_4POINT1 }, |
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{ MOV_CH_LAYOUT_AC3_3_1_1, AV_CH_LAYOUT_4POINT1 }, |
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{ MOV_CH_LAYOUT_DTS_4_1, AV_CH_LAYOUT_4POINT1 }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[] = { |
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{ MOV_CH_LAYOUT_HEXAGONAL, AV_CH_LAYOUT_HEXAGONAL }, |
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{ MOV_CH_LAYOUT_DTS_6_0_C, AV_CH_LAYOUT_HEXAGONAL }, |
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{ MOV_CH_LAYOUT_MPEG_5_1_A, AV_CH_LAYOUT_5POINT1 }, |
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{ MOV_CH_LAYOUT_MPEG_5_1_B, AV_CH_LAYOUT_5POINT1 }, |
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{ MOV_CH_LAYOUT_MPEG_5_1_C, AV_CH_LAYOUT_5POINT1 }, |
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{ MOV_CH_LAYOUT_MPEG_5_1_D, AV_CH_LAYOUT_5POINT1 }, |
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{ MOV_CH_LAYOUT_AUDIOUNIT_6_0, AV_CH_LAYOUT_6POINT0 }, |
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{ MOV_CH_LAYOUT_AAC_6_0, AV_CH_LAYOUT_6POINT0 }, |
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{ MOV_CH_LAYOUT_EAC3_6_0_A, AV_CH_LAYOUT_6POINT0 }, |
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{ MOV_CH_LAYOUT_DTS_6_0_A, AV_CH_LAYOUT_6POINT0_FRONT }, |
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{ MOV_CH_LAYOUT_DTS_6_0_B, AV_CH_LAYOUT_5POINT0_BACK | |
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AV_CH_TOP_CENTER }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[] = { |
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{ MOV_CH_LAYOUT_MPEG_6_1_A, AV_CH_LAYOUT_6POINT1 }, |
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{ MOV_CH_LAYOUT_AAC_6_1, AV_CH_LAYOUT_6POINT1 }, |
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{ MOV_CH_LAYOUT_EAC3_6_1_A, AV_CH_LAYOUT_6POINT1 }, |
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{ MOV_CH_LAYOUT_DTS_6_1_D, AV_CH_LAYOUT_6POINT1 }, |
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{ MOV_CH_LAYOUT_AUDIOUNIT_7_0, AV_CH_LAYOUT_7POINT0 }, |
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{ MOV_CH_LAYOUT_AAC_7_0, AV_CH_LAYOUT_7POINT0 }, |
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{ MOV_CH_LAYOUT_EAC3_7_0_A, AV_CH_LAYOUT_7POINT0 }, |
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{ MOV_CH_LAYOUT_AUDIOUNIT_7_0_FRONT, AV_CH_LAYOUT_7POINT0_FRONT }, |
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{ MOV_CH_LAYOUT_DTS_7_0, AV_CH_LAYOUT_7POINT0_FRONT }, |
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{ MOV_CH_LAYOUT_EAC3_6_1_B, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_TOP_CENTER }, |
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{ MOV_CH_LAYOUT_EAC3_6_1_C, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_TOP_FRONT_CENTER }, |
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{ MOV_CH_LAYOUT_DTS_6_1_A, AV_CH_LAYOUT_6POINT1_FRONT }, |
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{ MOV_CH_LAYOUT_DTS_6_1_B, AV_CH_LAYOUT_5POINT1_BACK | |
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AV_CH_TOP_CENTER }, |
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{ MOV_CH_LAYOUT_DTS_6_1_C, AV_CH_LAYOUT_6POINT1_BACK }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[] = { |
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{ MOV_CH_LAYOUT_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, |
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{ MOV_CH_LAYOUT_AAC_OCTAGONAL, AV_CH_LAYOUT_OCTAGONAL }, |
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{ MOV_CH_LAYOUT_CUBE, AV_CH_LAYOUT_CUBE }, |
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{ MOV_CH_LAYOUT_MPEG_7_1_A, AV_CH_LAYOUT_7POINT1_WIDE }, |
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{ MOV_CH_LAYOUT_MPEG_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, |
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{ MOV_CH_LAYOUT_EMAGIC_DEFAULT_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_B, AV_CH_LAYOUT_7POINT1_WIDE }, |
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{ MOV_CH_LAYOUT_DTS_7_1, AV_CH_LAYOUT_7POINT1_WIDE }, |
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{ MOV_CH_LAYOUT_MPEG_7_1_C, AV_CH_LAYOUT_7POINT1 }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_A, AV_CH_LAYOUT_7POINT1 }, |
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{ MOV_CH_LAYOUT_SMPTE_DTV, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_LAYOUT_STEREO_DOWNMIX }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_C, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_SURROUND_DIRECT_LEFT | |
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AV_CH_SURROUND_DIRECT_RIGHT }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_D, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_WIDE_LEFT | |
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AV_CH_WIDE_RIGHT }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_E, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_TOP_FRONT_LEFT | |
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AV_CH_TOP_FRONT_RIGHT }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_F, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_BACK_CENTER | |
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AV_CH_TOP_CENTER }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_G, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_BACK_CENTER | |
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AV_CH_TOP_FRONT_CENTER }, |
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{ MOV_CH_LAYOUT_EAC3_7_1_H, AV_CH_LAYOUT_5POINT1 | |
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AV_CH_TOP_CENTER | |
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AV_CH_TOP_FRONT_CENTER }, |
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{ MOV_CH_LAYOUT_DTS_8_0_A, AV_CH_LAYOUT_2_2 | |
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AV_CH_BACK_LEFT | |
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AV_CH_BACK_RIGHT | |
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AV_CH_FRONT_LEFT_OF_CENTER | |
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AV_CH_FRONT_RIGHT_OF_CENTER }, |
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{ MOV_CH_LAYOUT_DTS_8_0_B, AV_CH_LAYOUT_5POINT0 | |
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AV_CH_FRONT_LEFT_OF_CENTER | |
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AV_CH_FRONT_RIGHT_OF_CENTER | |
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AV_CH_BACK_CENTER }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = { |
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{ MOV_CH_LAYOUT_DTS_8_1_A, AV_CH_LAYOUT_2_2 | |
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AV_CH_BACK_LEFT | |
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AV_CH_BACK_RIGHT | |
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AV_CH_FRONT_LEFT_OF_CENTER | |
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AV_CH_FRONT_RIGHT_OF_CENTER | |
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AV_CH_LOW_FREQUENCY }, |
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{ MOV_CH_LAYOUT_DTS_8_1_B, AV_CH_LAYOUT_7POINT1_WIDE | |
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AV_CH_BACK_CENTER }, |
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{ 0, 0 }, |
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}; |
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static const struct MovChannelLayoutMap * const mov_ch_layout_map[] = { |
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mov_ch_layout_map_misc, |
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mov_ch_layout_map_1ch, |
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mov_ch_layout_map_2ch, |
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mov_ch_layout_map_3ch, |
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mov_ch_layout_map_4ch, |
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mov_ch_layout_map_5ch, |
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mov_ch_layout_map_6ch, |
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mov_ch_layout_map_7ch, |
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mov_ch_layout_map_8ch, |
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mov_ch_layout_map_9ch, |
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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 }, |
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{ AV_CODEC_ID_PCM_F32BE, mov_ch_layouts_wav }, |
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{ AV_CODEC_ID_PCM_F64LE, mov_ch_layouts_wav }, |
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{ AV_CODEC_ID_PCM_F64BE, mov_ch_layouts_wav }, |
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{ AV_CODEC_ID_NONE, NULL }, |
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}; |
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static uint64_t mov_get_channel_layout(uint32_t tag, uint32_t bitmap) |
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{ |
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int i, channels; |
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const struct MovChannelLayoutMap *layout_map; |
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if (tag == MOV_CH_LAYOUT_USE_DESCRIPTIONS) |
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return 0; |
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if (tag == MOV_CH_LAYOUT_USE_BITMAP) |
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return bitmap < 0x40000 ? bitmap : 0; |
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channels = tag & 0xFFFF; |
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if (channels > 9) |
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channels = 0; |
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layout_map = mov_ch_layout_map[channels]; |
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for (i = 0; layout_map[i].tag != 0; i++) { |
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if (layout_map[i].tag == tag) |
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break; |
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} |
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return layout_map[i].layout; |
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} |
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|
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static uint64_t mov_get_channel_mask(uint32_t label) |
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{ |
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if (label == 0) |
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return 0; |
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if (label <= 18) |
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return 1U << (label - 1); |
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if (label == 35) |
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return AV_CH_WIDE_LEFT; |
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if (label == 36) |
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return AV_CH_WIDE_RIGHT; |
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if (label == 37) |
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return AV_CH_LOW_FREQUENCY_2; |
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if (label == 38) |
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return AV_CH_STEREO_LEFT; |
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if (label == 39) |
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return AV_CH_STEREO_RIGHT; |
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return 0; |
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} |
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|
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static uint32_t mov_get_channel_label(enum AVChannel channel) |
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{ |
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if (channel < 0) |
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return 0; |
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if (channel <= AV_CHAN_TOP_BACK_RIGHT) |
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return channel + 1; |
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if (channel == AV_CHAN_WIDE_LEFT) |
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return 35; |
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if (channel == AV_CHAN_WIDE_RIGHT) |
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return 36; |
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if (channel == AV_CHAN_LOW_FREQUENCY_2) |
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return 37; |
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if (channel == AV_CHAN_STEREO_LEFT) |
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return 38; |
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if (channel == AV_CHAN_STEREO_RIGHT) |
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return 39; |
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return 0; |
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} |
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|
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int ff_mov_get_channel_layout_tag(const AVCodecParameters *par, |
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uint32_t *layout, |
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uint32_t *bitmap, |
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uint32_t **pchannel_desc) |
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{ |
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int i, j; |
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uint32_t tag = 0; |
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const enum MovChannelLayoutTag *layouts = NULL; |
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for (i = 0; mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE; i++) { |
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if (mov_codec_ch_layouts[i].codec_id == par->codec_id) |
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break; |
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} |
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if (mov_codec_ch_layouts[i].codec_id != AV_CODEC_ID_NONE) |
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layouts = mov_codec_ch_layouts[i].layouts; |
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|
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if (layouts) { |
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int channels; |
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const struct MovChannelLayoutMap *layout_map; |
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|
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channels = par->ch_layout.nb_channels; |
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if (channels > 9) |
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channels = 0; |
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layout_map = mov_ch_layout_map[channels]; |
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|
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for (i = 0; layouts[i] != 0; i++) { |
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if ((layouts[i] & 0xFFFF) != channels) |
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continue; |
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for (j = 0; layout_map[j].tag != 0; j++) { |
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if (layout_map[j].tag == layouts[i] && |
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(par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE && |
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layout_map[j].layout == par->ch_layout.u.mask)) |
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break; |
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} |
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if (layout_map[j].tag) |
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break; |
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} |
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tag = layouts[i]; |
|
} |
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|
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*layout = tag; |
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*bitmap = 0; |
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*pchannel_desc = NULL; |
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|
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if (tag == 0) { |
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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; |
|
uint64_t label_mask, mask = 0; |
|
int i; |
|
|
|
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; |
|
|
|
label_mask = 0; |
|
for (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); |
|
avio_rb32(pb); |
|
avio_rl32(pb); |
|
avio_rl32(pb); |
|
avio_rl32(pb); |
|
size -= 20; |
|
if (layout_tag == 0) { |
|
uint64_t mask_incr = mov_get_channel_mask(label); |
|
if (mask_incr == 0) { |
|
label_mask = 0; |
|
break; |
|
} |
|
label_mask |= mask_incr; |
|
} |
|
} |
|
if (layout_tag == 0) { |
|
if (label_mask) |
|
mask = label_mask; |
|
} else |
|
mask = mov_get_channel_layout(layout_tag, bitmap); |
|
|
|
if (mask) { |
|
av_channel_layout_uninit(&st->codecpar->ch_layout); |
|
av_channel_layout_from_mask(&st->codecpar->ch_layout, mask); |
|
} |
|
avio_skip(pb, size - 12); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
static const AVChannelLayout iso_channel_configuration[] = { |
|
|
|
{0}, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_MONO, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_STEREO, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_SURROUND, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_4POINT0, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_5POINT0, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_5POINT1, |
|
|
|
|
|
|
|
AV_CHANNEL_LAYOUT_7POINT1_WIDE, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_STEREO_DOWNMIX, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_2_1, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_2_2, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_6POINT1, |
|
|
|
|
|
|
|
|
|
|
|
AV_CHANNEL_LAYOUT_7POINT1, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_22POINT2, |
|
|
|
|
|
AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK, |
|
|
|
|
|
}; |
|
|
|
|
|
static const enum AVChannel iso_channel_position[] = { |
|
|
|
AV_CHAN_FRONT_LEFT, |
|
|
|
|
|
AV_CHAN_FRONT_RIGHT, |
|
|
|
|
|
AV_CHAN_FRONT_CENTER, |
|
|
|
|
|
AV_CHAN_LOW_FREQUENCY, |
|
|
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_FRONT_LEFT_OF_CENTER, |
|
|
|
|
|
AV_CHAN_FRONT_RIGHT_OF_CENTER, |
|
|
|
|
|
AV_CHAN_BACK_LEFT, |
|
|
|
|
|
AV_CHAN_BACK_RIGHT, |
|
|
|
|
|
AV_CHAN_BACK_CENTER, |
|
|
|
|
|
AV_CHAN_SURROUND_DIRECT_LEFT, |
|
|
|
|
|
AV_CHAN_SURROUND_DIRECT_RIGHT, |
|
|
|
|
|
AV_CHAN_SIDE_LEFT, |
|
|
|
|
|
AV_CHAN_SIDE_RIGHT, |
|
|
|
|
|
AV_CHAN_WIDE_LEFT, |
|
|
|
|
|
AV_CHAN_WIDE_RIGHT, |
|
|
|
|
|
AV_CHAN_TOP_FRONT_LEFT, |
|
|
|
|
|
AV_CHAN_TOP_FRONT_RIGHT, |
|
|
|
|
|
AV_CHAN_TOP_FRONT_CENTER, |
|
|
|
|
|
AV_CHAN_TOP_BACK_LEFT, |
|
|
|
|
|
AV_CHAN_TOP_BACK_RIGHT, |
|
|
|
|
|
AV_CHAN_TOP_BACK_CENTER, |
|
|
|
|
|
AV_CHAN_TOP_SIDE_LEFT, |
|
|
|
|
|
AV_CHAN_TOP_SIDE_RIGHT, |
|
|
|
|
|
AV_CHAN_TOP_CENTER, |
|
|
|
|
|
AV_CHAN_LOW_FREQUENCY_2, |
|
|
|
|
|
AV_CHAN_BOTTOM_FRONT_LEFT, |
|
|
|
|
|
AV_CHAN_BOTTOM_FRONT_RIGHT, |
|
|
|
|
|
AV_CHAN_BOTTOM_FRONT_CENTER, |
|
|
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_NONE, |
|
AV_CHAN_NONE, |
|
AV_CHAN_NONE, |
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
AV_CHAN_NONE, |
|
|
|
AV_CHAN_NONE, |
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
AV_CHAN_NONE, |
|
|
|
|
|
|
|
|
|
}; |
|
|
|
int ff_mov_get_channel_config_from_layout(const AVChannelLayout *layout, int *config) |
|
{ |
|
|
|
*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_get_layout_from_channel_positions(const uint8_t *position, int position_num, |
|
AVChannelLayout *layout) |
|
{ |
|
int ret; |
|
enum AVChannel channel; |
|
|
|
av_channel_layout_uninit(layout); |
|
|
|
if (position_num <= 63) { |
|
layout->order = AV_CHANNEL_ORDER_NATIVE; |
|
layout->nb_channels = position_num; |
|
for (int i = 0; i < position_num; i++) { |
|
if (position[i] >= FF_ARRAY_ELEMS(iso_channel_position)) { |
|
ret = AVERROR_PATCHWELCOME; |
|
goto error; |
|
} |
|
|
|
channel = iso_channel_position[position[i]]; |
|
|
|
if (channel == AV_CHAN_NONE) { |
|
ret = AVERROR_PATCHWELCOME; |
|
goto error; |
|
} |
|
|
|
layout->u.mask |= 1ULL << channel; |
|
} |
|
} else { |
|
layout->order = AV_CHANNEL_ORDER_CUSTOM; |
|
layout->nb_channels = position_num; |
|
layout->u.map = av_calloc(position_num, sizeof(*layout->u.map)); |
|
if (!layout->u.map) { |
|
ret = AVERROR(ENOMEM); |
|
goto error; |
|
} |
|
|
|
for (int i = 0; i < position_num; i++) { |
|
if (position[i] >= FF_ARRAY_ELEMS(iso_channel_position)) { |
|
ret = AVERROR_PATCHWELCOME; |
|
goto error; |
|
} |
|
|
|
channel = iso_channel_position[position[i]]; |
|
|
|
if (channel == AV_CHAN_NONE) { |
|
ret = AVERROR_PATCHWELCOME; |
|
goto error; |
|
} |
|
|
|
layout->u.map[i].id = channel; |
|
} |
|
} |
|
|
|
|
|
return 0; |
|
|
|
error: |
|
av_channel_layout_uninit(layout); |
|
return ret; |
|
} |
|
|