182 lines
5.5 KiB
C
182 lines
5.5 KiB
C
/*
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* RealVideo 3 decoder
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* copyright (c) 2007 Konstantin Shishkov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* miscellaneous RV30 tables
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*/
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#ifndef AVCODEC_RV30DATA_H
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#define AVCODEC_RV30DATA_H
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#include <stdint.h>
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/** DC quantizer mapping for RV30 */
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static const uint8_t rv30_luma_dc_quant[32] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 22, 22, 23, 23, 23, 24, 24, 25, 25
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};
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/**
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* This table is used for storing the differences
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* between the predicted and the real intra type.
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*/
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static const uint8_t rv30_itype_code[9*9*2] = {
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0, 0, 0, 1, 1, 0, 1, 1, 0, 2, 2, 0, 0, 3, 3, 0, 1, 2,
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2, 1, 0, 4, 4, 0, 3, 1, 1, 3, 0, 5, 5, 0, 2, 2, 1, 4,
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4, 1, 0, 6, 3, 2, 1, 5, 2, 3, 5, 1, 6, 0, 0, 7, 4, 2,
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2, 4, 3, 3, 6, 1, 1, 6, 7, 0, 0, 8, 5, 2, 4, 3, 2, 5,
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3, 4, 1, 7, 4, 4, 7, 1, 8, 0, 6, 2, 3, 5, 5, 3, 2, 6,
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1, 8, 2, 7, 7, 2, 8, 1, 5, 4, 4, 5, 3, 6, 6, 3, 8, 2,
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4, 6, 5, 5, 6, 4, 2, 8, 7, 3, 3, 7, 6, 5, 5, 6, 7, 4,
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4, 7, 8, 3, 3, 8, 7, 5, 8, 4, 5, 7, 4, 8, 6, 6, 7, 6,
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5, 8, 8, 5, 6, 7, 8, 6, 7, 7, 6, 8, 8, 7, 7, 8, 8, 8,
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};
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/**
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* This table is used for retrieving the current intra type
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* based on its neighbors and adjustment provided by
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* code read and decoded before.
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*
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* This is really a three-dimensional matrix with dimensions
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* [-1..9][-1..9][0..9]. The first and second coordinates are
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* detemined by the top and left neighbors (-1 if unavailable).
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*/
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static const uint8_t rv30_itype_from_context[900] = {
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0, 9, 9, 9, 9, 9, 9, 9, 9,
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0, 2, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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2, 0, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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0, 1, 9, 9, 9, 9, 9, 9, 9,
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0, 2, 1, 6, 4, 8, 5, 7, 3,
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1, 0, 2, 6, 5, 4, 3, 8, 7,
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2, 8, 0, 1, 7, 4, 3, 6, 5,
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2, 0, 1, 3, 8, 5, 4, 7, 6,
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2, 0, 1, 4, 6, 7, 8, 3, 5,
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0, 1, 5, 2, 6, 3, 8, 4, 7,
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0, 1, 6, 2, 4, 7, 5, 8, 3,
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2, 7, 0, 1, 4, 8, 6, 3, 5,
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2, 8, 0, 1, 7, 3, 4, 5, 6,
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1, 0, 9, 9, 9, 9, 9, 9, 9,
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1, 2, 5, 6, 3, 0, 4, 8, 7,
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1, 6, 2, 5, 3, 0, 4, 8, 7,
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2, 1, 7, 6, 8, 3, 5, 0, 4,
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1, 2, 5, 3, 6, 8, 4, 7, 0,
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1, 6, 2, 0, 4, 5, 8, 7, 3,
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1, 5, 2, 6, 3, 8, 4, 0, 7,
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1, 6, 0, 2, 4, 5, 7, 3, 8,
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2, 1, 7, 6, 0, 8, 5, 4, 3,
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1, 2, 7, 8, 3, 4, 5, 6, 0,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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0, 2, 1, 8, 7, 6, 5, 4, 3,
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1, 2, 0, 6, 5, 7, 4, 8, 3,
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2, 8, 7, 1, 0, 6, 4, 3, 5,
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2, 0, 8, 1, 3, 7, 5, 4, 6,
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2, 0, 4, 1, 7, 8, 6, 3, 5,
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2, 0, 1, 5, 8, 4, 6, 7, 3,
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2, 0, 6, 1, 4, 7, 8, 5, 3,
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2, 7, 8, 1, 0, 5, 4, 6, 3,
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2, 8, 7, 1, 0, 4, 3, 6, 5,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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0, 2, 1, 3, 5, 8, 6, 4, 7,
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1, 0, 2, 5, 3, 6, 4, 8, 7,
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2, 8, 1, 0, 3, 5, 7, 6, 4,
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3, 2, 5, 8, 1, 4, 6, 7, 0,
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4, 2, 0, 6, 1, 5, 8, 3, 7,
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5, 3, 1, 2, 8, 6, 4, 0, 7,
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1, 6, 0, 2, 4, 5, 8, 3, 7,
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2, 7, 0, 1, 5, 4, 8, 6, 3,
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2, 8, 3, 5, 1, 0, 7, 6, 4,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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2, 0, 6, 1, 4, 7, 5, 8, 3,
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1, 6, 2, 0, 4, 5, 3, 7, 8,
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2, 8, 7, 6, 4, 0, 1, 5, 3,
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4, 2, 1, 0, 6, 8, 3, 5, 7,
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4, 2, 6, 0, 1, 5, 7, 8, 3,
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1, 2, 5, 0, 6, 3, 4, 7, 8,
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6, 4, 0, 1, 2, 7, 5, 3, 8,
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2, 7, 4, 6, 0, 1, 8, 5, 3,
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2, 8, 7, 4, 6, 1, 3, 5, 0,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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5, 1, 2, 3, 6, 8, 0, 4, 7,
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1, 5, 6, 3, 2, 0, 4, 8, 7,
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2, 1, 5, 3, 6, 8, 7, 4, 0,
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5, 3, 1, 2, 6, 8, 4, 7, 0,
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1, 6, 2, 4, 5, 8, 0, 3, 7,
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5, 1, 3, 6, 2, 0, 8, 4, 7,
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1, 6, 5, 2, 0, 4, 3, 7, 8,
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2, 7, 1, 6, 5, 0, 8, 3, 4,
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2, 5, 1, 3, 6, 8, 4, 0, 7,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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1, 6, 2, 0, 5, 4, 3, 7, 8,
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1, 6, 5, 4, 2, 3, 0, 7, 8,
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2, 1, 6, 7, 4, 8, 5, 3, 0,
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2, 1, 6, 5, 8, 4, 3, 0, 7,
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6, 4, 1, 2, 0, 5, 7, 8, 3,
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1, 6, 5, 2, 3, 0, 4, 8, 7,
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6, 1, 4, 0, 2, 7, 5, 3, 8,
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2, 7, 4, 6, 1, 5, 0, 8, 3,
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2, 1, 6, 8, 4, 7, 3, 5, 0,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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2, 0, 4, 7, 6, 1, 8, 5, 3,
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6, 1, 2, 0, 4, 7, 5, 8, 3,
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2, 7, 8, 0, 1, 6, 4, 3, 5,
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2, 4, 0, 8, 3, 1, 7, 6, 5,
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4, 2, 7, 0, 6, 1, 8, 5, 3,
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2, 1, 0, 8, 5, 6, 7, 4, 3,
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2, 6, 4, 1, 7, 0, 5, 8, 3,
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2, 7, 4, 0, 8, 6, 1, 5, 3,
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2, 8, 7, 4, 1, 0, 3, 6, 5,
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9, 9, 9, 9, 9, 9, 9, 9, 9,
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2, 0, 8, 1, 3, 4, 6, 5, 7,
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1, 2, 0, 6, 8, 5, 7, 3, 4,
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2, 8, 7, 1, 0, 3, 6, 5, 4,
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8, 3, 2, 5, 1, 0, 4, 7, 6,
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2, 0, 4, 8, 5, 1, 7, 6, 3,
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2, 1, 0, 8, 5, 3, 6, 4, 7,
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2, 1, 6, 0, 8, 4, 5, 7, 3,
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2, 7, 8, 4, 0, 6, 1, 5, 3,
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2, 8, 3, 0, 7, 4, 1, 6, 5,
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};
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/**
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* Loop filter limits are taken from this table.
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*/
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static const uint8_t rv30_loop_filt_lim[32] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5
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};
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#endif /* AVCODEC_RV30DATA_H */
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