diff options
Diffstat (limited to 'libavcodec/dcadata.c')
| -rw-r--r-- | libavcodec/dcadata.c | 107 |
1 files changed, 103 insertions, 4 deletions
diff --git a/libavcodec/dcadata.c b/libavcodec/dcadata.c index 6c41aef..fc877aa 100644 --- a/libavcodec/dcadata.c +++ b/libavcodec/dcadata.c @@ -3,27 +3,29 @@ * Copyright (C) 2004 Gildas Bazin * Copyright (c) 2006 Benjamin Larsson * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stdint.h> +#include "libavutil/channel_layout.h" #include "libavutil/mem.h" +#include "dca.h" #include "dcadata.h" /* Generic tables */ @@ -4195,6 +4197,14 @@ const uint32_t ff_dca_lossless_quant[32] = { 4, 2, 1, 0, 0, 0, 0, 0 }; +const float ff_dca_lossless_quant_d[32] = { + 0, 1.0, 0.5, 0.33, 0.25, 0.166, 0.125, + 0.083, 0.0625, 0.03125, 0.0156, 7.874E-3, 3.922E-3, 1.957E-3, + 9.775E-4, 4.885E-4, 2.442E-4, 1.221E-4, 6.104E-5, 3.052E-5, 1.526E-5, + 7.629E-6, 3.815E-6, 1.907E-6, 9.537E-7, 4.768E-7, 2.384E-7, 0, + 0, 0, 0, 0 +}; + /* Vector quantization tables */ DECLARE_ALIGNED(8, const int8_t, ff_dca_high_freq_vq)[1024][32] = { @@ -8301,6 +8311,95 @@ const int32_t ff_dca_sampling_freqs[16] = { * where Ch(n) represents the subband samples in the (n)th audio channel. */ +const uint32_t ff_dca_map_xxch_to_native[28] = { + AV_CH_FRONT_CENTER, + AV_CH_FRONT_LEFT, + AV_CH_FRONT_RIGHT, + AV_CH_SIDE_LEFT, + AV_CH_SIDE_RIGHT, + AV_CH_LOW_FREQUENCY, + AV_CH_BACK_CENTER, + AV_CH_BACK_LEFT, + AV_CH_BACK_RIGHT, + AV_CH_SIDE_LEFT, /* side surround left -- dup sur side L */ + AV_CH_SIDE_RIGHT, /* side surround right -- dup sur side R */ + AV_CH_FRONT_LEFT_OF_CENTER, + AV_CH_FRONT_RIGHT_OF_CENTER, + AV_CH_TOP_FRONT_LEFT, + AV_CH_TOP_FRONT_CENTER, + AV_CH_TOP_FRONT_RIGHT, + AV_CH_LOW_FREQUENCY, /* lfe2 -- duplicate lfe1 position */ + AV_CH_FRONT_LEFT_OF_CENTER, /* side front left -- dup front cntr L */ + AV_CH_FRONT_RIGHT_OF_CENTER,/* side front right -- dup front cntr R */ + AV_CH_TOP_CENTER, /* overhead */ + AV_CH_TOP_FRONT_LEFT, /* side high left -- dup */ + AV_CH_TOP_FRONT_RIGHT, /* side high right -- dup */ + AV_CH_TOP_BACK_CENTER, + AV_CH_TOP_BACK_LEFT, + AV_CH_TOP_BACK_RIGHT, + AV_CH_BACK_CENTER, /* rear low center -- dup */ + AV_CH_BACK_LEFT, /* rear low left -- dup */ + AV_CH_BACK_RIGHT /* read low right -- dup */ +}; + +/* -1 are reserved or unknown */ +const int ff_dca_ext_audio_descr_mask[8] = { + DCA_EXT_XCH, + -1, + DCA_EXT_X96, + DCA_EXT_XCH | DCA_EXT_X96, + -1, + -1, + DCA_EXT_XXCH, + -1, +}; + +/* Tables for mapping dts channel configurations to libavcodec multichannel api. + * Some compromises have been made for special configurations. Most configurations + * are never used so complete accuracy is not needed. + * + * L = left, R = right, C = center, S = surround, F = front, R = rear, T = total, OV = overhead. + * S -> side, when both rear and back are configured move one of them to the side channel + * OV -> center back + * All 2 channel configurations -> AV_CH_LAYOUT_STEREO + */ +const uint64_t ff_dca_core_channel_layout[16] = { + AV_CH_FRONT_CENTER, ///< 1, A + AV_CH_LAYOUT_STEREO, ///< 2, A + B (dual mono) + AV_CH_LAYOUT_STEREO, ///< 2, L + R (stereo) + AV_CH_LAYOUT_STEREO, ///< 2, (L + R) + (L - R) (sum-difference) + AV_CH_LAYOUT_STEREO, ///< 2, LT + RT (left and right total) + AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER, ///< 3, C + L + R + AV_CH_LAYOUT_STEREO | AV_CH_BACK_CENTER, ///< 3, L + R + S + AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 4, C + L + R + S + AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 4, L + R + SL + SR + + AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_SIDE_LEFT | + AV_CH_SIDE_RIGHT, ///< 5, C + L + R + SL + SR + + AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | + AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER, ///< 6, CL + CR + L + R + SL + SR + + AV_CH_LAYOUT_STEREO | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | + AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER, ///< 6, C + L + R + LR + RR + OV + + AV_CH_FRONT_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | + AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_BACK_CENTER | + AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 6, CF + CR + LF + RF + LR + RR + + AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | + AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | + AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT, ///< 7, CL + C + CR + L + R + SL + SR + + AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER | + AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT | + AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT, ///< 8, CL + CR + L + R + SL1 + SL2 + SR1 + SR2 + + AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER | + AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO | + AV_CH_SIDE_LEFT | AV_CH_BACK_CENTER | AV_CH_SIDE_RIGHT, ///< 8, CL + C + CR + L + R + SL + S + SR +}; + const int8_t ff_dca_lfe_index[16] = { 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3 }; |
