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116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*
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* RealVideo 4 decoder
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* copyright (c) 2007 Konstantin Shishkov
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 RV40 tables
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*/
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#ifndef AVCODEC_RV40DATA_H
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#define AVCODEC_RV40DATA_H
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#include <stdint.h>
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/**
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* standard widths and heights coded in RV40
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*/
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//@{
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static const int rv40_standard_widths[] = { 160, 172, 240, 320, 352, 640, 704, 0};
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static const int rv40_standard_heights[] = { 120, 132, 144, 240, 288, 480, -8, -10, 180, 360, 576, 0};
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//@}
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#define MODE2_PATTERNS_NUM 20
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/**
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* intra types table
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*
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* These values are actually coded 3-tuples
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* used for detecting standard block configurations.
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*/
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static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM] = {
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0x000, 0x100, 0x200,
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0x011, 0x111, 0x211, 0x511, 0x611,
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0x022, 0x122, 0x222, 0x722,
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0x272, 0x227,
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0x822, 0x282, 0x228,
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0x112, 0x116, 0x221
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};
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/**
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* luma quantizer values
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* The second table is used for inter blocks.
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*/
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static const uint8_t rv40_luma_dc_quant[2][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, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 22, 22, 22, 22 },
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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, 20, 21, 21, 22, 23, 23, 23, 24, 24, 24, 24 }
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};
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/**
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* @defgroup loopfilter coefficients used by the RV40 loop filter
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* @{
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*/
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/**
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* dither values for deblocking filter - left/top values
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*/
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static const uint8_t rv40_dither_l[16] = {
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0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
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0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
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};
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/**
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* dither values for deblocking filter - right/bottom values
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*/
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static const uint8_t rv40_dither_r[16] = {
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0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
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0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
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};
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/** alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
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static const uint8_t rv40_alpha_tab[32] = {
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 122, 96, 75, 59, 47, 37,
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29, 23, 18, 15, 13, 11, 10, 9,
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8, 7, 6, 5, 4, 3, 2, 1
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};
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/** beta parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
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static const uint8_t rv40_beta_tab[32] = {
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0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 4, 4, 4, 6, 6,
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6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14, 15, 16, 17
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};
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/** clip table for RV40 loop filter - the same as in JVT-A003r1 */
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static const uint8_t rv40_filter_clip_tbl[3][32] = {
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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},
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5
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},
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1,
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1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 7, 8, 9
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}
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};
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/** @} */ // end loopfilter group
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#endif /* AVCODEC_RV40DATA_H */
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