/* * MPEG1/2 decoder tables * copyright (c) 2000,2001 Fabrice Bellard * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * * This file is part of Libav. * * Libav 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, * 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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * MPEG1/2 decoder tables. */ #ifndef AVCODEC_MPEG12DECDATA_H #define AVCODEC_MPEG12DECDATA_H #include <stdint.h> #include "mpegvideo.h" #define MB_TYPE_ZERO_MV 0x20000000 #define IS_ZERO_MV(a) ((a)&MB_TYPE_ZERO_MV) static const uint8_t table_mb_ptype[7][2] = { { 3, 5 }, // 0x01 MB_INTRA { 1, 2 }, // 0x02 MB_PAT { 1, 3 }, // 0x08 MB_FOR { 1, 1 }, // 0x0A MB_FOR|MB_PAT { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA { 1, 5 }, // 0x12 MB_QUANT|MB_PAT { 2, 5 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT }; static const uint32_t ptype2mb_type[7] = { MB_TYPE_INTRA, MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16, MB_TYPE_L0, MB_TYPE_L0 | MB_TYPE_CBP, MB_TYPE_QUANT | MB_TYPE_INTRA, MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16, MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP, }; static const uint8_t table_mb_btype[11][2] = { { 3, 5 }, // 0x01 MB_INTRA { 2, 3 }, // 0x04 MB_BACK { 3, 3 }, // 0x06 MB_BACK|MB_PAT { 2, 4 }, // 0x08 MB_FOR { 3, 4 }, // 0x0A MB_FOR|MB_PAT { 2, 2 }, // 0x0C MB_FOR|MB_BACK { 3, 2 }, // 0x0E MB_FOR|MB_BACK|MB_PAT { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA { 2, 6 }, // 0x16 MB_QUANT|MB_BACK|MB_PAT { 3, 6 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT { 2, 5 }, // 0x1E MB_QUANT|MB_FOR|MB_BACK|MB_PAT }; static const uint32_t btype2mb_type[11] = { MB_TYPE_INTRA, MB_TYPE_L1, MB_TYPE_L1 | MB_TYPE_CBP, MB_TYPE_L0, MB_TYPE_L0 | MB_TYPE_CBP, MB_TYPE_L0L1, MB_TYPE_L0L1 | MB_TYPE_CBP, MB_TYPE_QUANT | MB_TYPE_INTRA, MB_TYPE_QUANT | MB_TYPE_L1 | MB_TYPE_CBP, MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP, MB_TYPE_QUANT | MB_TYPE_L0L1 | MB_TYPE_CBP, }; static const uint8_t non_linear_qscale[32] = { 0, 1, 2, 3, 4, 5, 6, 7, 8,10,12,14,16,18,20,22, 24,28,32,36,40,44,48,52, 56,64,72,80,88,96,104,112, }; #endif /* AVCODEC_MPEG12DECDATA_H */