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@@ -7663,6 +7663,95 @@ static const float dca_default_coeffs[10][6][2] = { |
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* where Ch(n) represents the subband samples in the (n)th audio channel. |
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*/ |
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static const uint32_t map_xxch_to_native[28] = { |
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AV_CH_FRONT_CENTER, |
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AV_CH_FRONT_LEFT, |
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AV_CH_FRONT_RIGHT, |
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AV_CH_SIDE_LEFT, |
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AV_CH_SIDE_RIGHT, |
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AV_CH_LOW_FREQUENCY, |
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AV_CH_BACK_CENTER, |
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AV_CH_BACK_LEFT, |
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AV_CH_BACK_RIGHT, |
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AV_CH_SIDE_LEFT, /* side surround left -- dup sur side L */ |
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AV_CH_SIDE_RIGHT, /* side surround right -- dup sur side R */ |
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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_TOP_FRONT_LEFT, |
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AV_CH_TOP_FRONT_CENTER, |
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AV_CH_TOP_FRONT_RIGHT, |
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AV_CH_LOW_FREQUENCY, /* lfe2 -- duplicate lfe1 position */ |
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AV_CH_FRONT_LEFT_OF_CENTER, /* side front left -- dup front cntr L */ |
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AV_CH_FRONT_RIGHT_OF_CENTER,/* side front right -- dup front cntr R */ |
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AV_CH_TOP_CENTER, /* overhead */ |
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AV_CH_TOP_FRONT_LEFT, /* side high left -- dup */ |
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AV_CH_TOP_FRONT_RIGHT, /* side high right -- dup */ |
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AV_CH_TOP_BACK_CENTER, |
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AV_CH_TOP_BACK_LEFT, |
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AV_CH_TOP_BACK_RIGHT, |
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AV_CH_BACK_CENTER, /* rear low center -- dup */ |
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AV_CH_BACK_LEFT, /* rear low left -- dup */ |
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AV_CH_BACK_RIGHT /* read low right -- dup */ |
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}; |
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/* -1 are reserved or unknown */ |
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static const int dca_ext_audio_descr_mask[] = { |
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DCA_EXT_XCH, |
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-1, |
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DCA_EXT_X96, |
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DCA_EXT_XCH | DCA_EXT_X96, |
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-1, |
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-1, |
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DCA_EXT_XXCH, |
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-1, |
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}; |
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/* Tables for mapping dts channel configurations to libavcodec multichannel api. |
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* Some compromises have been made for special configurations. Most configurations |
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* are never used so complete accuracy is not needed. |
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* |
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* L = left, R = right, C = center, S = surround, F = front, R = rear, T = total, OV = overhead. |
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* S -> side, when both rear and back are configured move one of them to the side channel |
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* OV -> center back |
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* All 2 channel configurations -> AV_CH_LAYOUT_STEREO |
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*/ |
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static const uint64_t dca_core_channel_layout[] = { |
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AV_CH_FRONT_CENTER, ///< 1, A |
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AV_CH_LAYOUT_STEREO, ///< 2, A + B (dual mono) |
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AV_CH_LAYOUT_STEREO, ///< 2, L + R (stereo) |
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AV_CH_LAYOUT_STEREO, ///< 2, (L + R) + (L - R) (sum-difference) |
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AV_CH_LAYOUT_STEREO, ///< 2, LT + RT (left and right total) |
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AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER, ///< 3, C + L + R |
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AV_CH_LAYOUT_STEREO | AV_CH_BACK_CENTER, ///< 3, L + R + S |
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AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 4, C + L + R + S |
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AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 4, L + R + SL + SR |
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AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_SIDE_LEFT | |
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AV_CH_SIDE_RIGHT, ///< 5, C + L + R + SL + SR |
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AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | |
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AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER, ///< 6, CL + CR + L + R + SL + SR |
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AV_CH_LAYOUT_STEREO | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | |
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AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 6, C + L + R + LR + RR + OV |
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AV_CH_FRONT_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | |
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AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_BACK_CENTER | |
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AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 6, CF + CR + LF + RF + LR + RR |
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AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | |
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AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | |
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AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 7, CL + C + CR + L + R + SL + SR |
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AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | |
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AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | |
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AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 8, CL + CR + L + R + SL1 + SL2 + SR1 + SR2 |
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AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | |
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AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | |
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AV_CH_SIDE_LEFT | AV_CH_BACK_CENTER | AV_CH_SIDE_RIGHT, ///< 8, CL + C + CR + L + R + SL + S + SR |
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}; |
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static const int8_t dca_lfe_index[] = { |
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1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3 |
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}; |
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