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ffmpeg / libavcodec / rv40data.h @ 58772292

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/*
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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 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 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 */