diff options
Diffstat (limited to 'ffmpeg/libavcodec/dvdata.c')
| -rw-r--r-- | ffmpeg/libavcodec/dvdata.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/dvdata.c b/ffmpeg/libavcodec/dvdata.c new file mode 100644 index 0000000..a7e3d59 --- /dev/null +++ b/ffmpeg/libavcodec/dvdata.c @@ -0,0 +1,122 @@ +/* + * Constants for DV codec + * Copyright (c) 2002 Fabrice Bellard + * + * 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 + */ + +/** + * @file + * Constants for DV codec. + */ + +#include "avcodec.h" +#include "dvdata.h" + +/* unquant tables (not used directly) */ +const uint8_t ff_dv_quant_shifts[22][4] = { + { 3,3,4,4 }, + { 3,3,4,4 }, + { 2,3,3,4 }, + { 2,3,3,4 }, + { 2,2,3,3 }, + { 2,2,3,3 }, + { 1,2,2,3 }, + { 1,2,2,3 }, + { 1,1,2,2 }, + { 1,1,2,2 }, + { 0,1,1,2 }, + { 0,1,1,2 }, + { 0,0,1,1 }, + { 0,0,1,1 }, + { 0,0,0,1 }, + { 0,0,0,0 }, + { 0,0,0,0 }, + { 0,0,0,0 }, + { 0,0,0,0 }, + { 0,0,0,0 }, + { 0,0,0,0 }, + { 0,0,0,0 }, +}; + +const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 }; + +const int ff_dv_iweight_88[64] = { + 32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079, + 18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284, + 19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262, + 20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815, + 20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400, + 21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764, + 24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191, + 25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536, +}; +const int ff_dv_iweight_248[64] = { + 32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196, + 19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079, + 20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764, + 17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692, + 21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191, + 18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867, + 24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173, + 22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642, +}; + +/** + * The "inverse" DV100 weights are actually just the spec weights (zig-zagged). + */ +const int ff_dv_iweight_1080_y[64] = { + 128, 16, 16, 17, 17, 17, 18, 18, + 18, 18, 18, 18, 19, 18, 18, 19, + 19, 19, 19, 19, 19, 42, 38, 40, + 40, 40, 38, 42, 44, 43, 41, 41, + 41, 41, 43, 44, 45, 45, 42, 42, + 42, 45, 45, 48, 46, 43, 43, 46, + 48, 49, 48, 44, 48, 49, 101, 98, + 98, 101, 104, 109, 104, 116, 116, 123, +}; +const int ff_dv_iweight_1080_c[64] = { + 128, 16, 16, 17, 17, 17, 25, 25, + 25, 25, 26, 25, 26, 25, 26, 26, + 26, 27, 27, 26, 26, 42, 38, 40, + 40, 40, 38, 42, 44, 43, 41, 41, + 41, 41, 43, 44, 91, 91, 84, 84, + 84, 91, 91, 96, 93, 86, 86, 93, + 96, 197, 191, 177, 191, 197, 203, 197, + 197, 203, 209, 219, 209, 232, 232, 246, +}; +const int ff_dv_iweight_720_y[64] = { + 128, 16, 16, 17, 17, 17, 18, 18, + 18, 18, 18, 18, 19, 18, 18, 19, + 19, 19, 19, 19, 19, 42, 38, 40, + 40, 40, 38, 42, 44, 43, 41, 41, + 41, 41, 43, 44, 68, 68, 63, 63, + 63, 68, 68, 96, 92, 86, 86, 92, + 96, 98, 96, 88, 96, 98, 202, 196, + 196, 202, 208, 218, 208, 232, 232, 246, +}; +const int ff_dv_iweight_720_c[64] = { + 128, 24, 24, 26, 26, 26, 36, 36, + 36, 36, 36, 36, 38, 36, 36, 38, + 38, 38, 38, 38, 38, 84, 76, 80, + 80, 80, 76, 84, 88, 86, 82, 82, + 82, 82, 86, 88, 182, 182, 168, 168, + 168, 182, 182, 192, 186, 192, 172, 186, + 192, 394, 382, 354, 382, 394, 406, 394, + 394, 406, 418, 438, 418, 464, 464, 492, +}; + |