yading@10: /*
yading@10:  * Constants for DV codec
yading@10:  * Copyright (c) 2002 Fabrice Bellard
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Constants for DV codec.
yading@10:  */
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "dvdata.h"
yading@10: 
yading@10: /* unquant tables (not used directly) */
yading@10: const uint8_t ff_dv_quant_shifts[22][4] = {
yading@10:   { 3,3,4,4 },
yading@10:   { 3,3,4,4 },
yading@10:   { 2,3,3,4 },
yading@10:   { 2,3,3,4 },
yading@10:   { 2,2,3,3 },
yading@10:   { 2,2,3,3 },
yading@10:   { 1,2,2,3 },
yading@10:   { 1,2,2,3 },
yading@10:   { 1,1,2,2 },
yading@10:   { 1,1,2,2 },
yading@10:   { 0,1,1,2 },
yading@10:   { 0,1,1,2 },
yading@10:   { 0,0,1,1 },
yading@10:   { 0,0,1,1 },
yading@10:   { 0,0,0,1 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10:   { 0,0,0,0 },
yading@10: };
yading@10: 
yading@10: const uint8_t ff_dv_quant_offset[4] = { 6,  3,  0,  1 };
yading@10: 
yading@10: const int ff_dv_iweight_88[64] = {
yading@10:  32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
yading@10:  18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
yading@10:  19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
yading@10:  20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
yading@10:  20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
yading@10:  21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
yading@10:  24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
yading@10:  25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
yading@10: };
yading@10: const int ff_dv_iweight_248[64] = {
yading@10:  32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
yading@10:  19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
yading@10:  20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
yading@10:  17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
yading@10:  21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
yading@10:  18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
yading@10:  24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
yading@10:  22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
yading@10: };
yading@10: 
yading@10: /**
yading@10:  * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
yading@10:  */
yading@10: const int ff_dv_iweight_1080_y[64] = {
yading@10:     128,  16,  16,  17,  17,  17,  18,  18,
yading@10:      18,  18,  18,  18,  19,  18,  18,  19,
yading@10:      19,  19,  19,  19,  19,  42,  38,  40,
yading@10:      40,  40,  38,  42,  44,  43,  41,  41,
yading@10:      41,  41,  43,  44,  45,  45,  42,  42,
yading@10:      42,  45,  45,  48,  46,  43,  43,  46,
yading@10:      48,  49,  48,  44,  48,  49, 101,  98,
yading@10:      98, 101, 104, 109, 104, 116, 116, 123,
yading@10: };
yading@10: const int ff_dv_iweight_1080_c[64] = {
yading@10:     128,  16,  16,  17,  17,  17,  25,  25,
yading@10:      25,  25,  26,  25,  26,  25,  26,  26,
yading@10:      26,  27,  27,  26,  26,  42,  38,  40,
yading@10:      40,  40,  38,  42,  44,  43,  41,  41,
yading@10:      41,  41,  43,  44,  91,  91,  84,  84,
yading@10:      84,  91,  91,  96,  93,  86,  86,  93,
yading@10:      96, 197, 191, 177, 191, 197, 203, 197,
yading@10:     197, 203, 209, 219, 209, 232, 232, 246,
yading@10: };
yading@10: const int ff_dv_iweight_720_y[64] = {
yading@10:     128,  16,  16,  17,  17,  17,  18,  18,
yading@10:      18,  18,  18,  18,  19,  18,  18,  19,
yading@10:      19,  19,  19,  19,  19,  42,  38,  40,
yading@10:      40,  40,  38,  42,  44,  43,  41,  41,
yading@10:      41,  41,  43,  44,  68,  68,  63,  63,
yading@10:      63,  68,  68,  96,  92,  86,  86,  92,
yading@10:      96,  98,  96,  88,  96,  98, 202, 196,
yading@10:     196, 202, 208, 218, 208, 232, 232, 246,
yading@10: };
yading@10: const int ff_dv_iweight_720_c[64] = {
yading@10:     128,  24,  24,  26,  26,  26,  36,  36,
yading@10:      36,  36,  36,  36,  38,  36,  36,  38,
yading@10:      38,  38,  38,  38,  38,  84,  76,  80,
yading@10:      80,  80,  76,  84,  88,  86,  82,  82,
yading@10:      82,  82,  86,  88, 182, 182, 168, 168,
yading@10:     168, 182, 182, 192, 186, 192, 172, 186,
yading@10:     192, 394, 382, 354, 382, 394, 406, 394,
yading@10:     394, 406, 418, 438, 418, 464, 464, 492,
yading@10: };
yading@10: