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/*
* RealVideo 4 decoder
* copyright (c) 2007 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rv34data.h
* Miscellaneous RV30/40 tables.
*/
#ifndef FFMPEG_RV34DATA_H
#define FFMPEG_RV34DATA_H
#include <stdint.h>
/**
* Number of ones in nibble minus one
*/
static const uint8_t rv34_count_ones[16] = {
0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 2, 3
};
/**
* Values used to reconstruct coded block pattern
*/
static const uint8_t rv34_cbp_code[16] = {
0x00, 0x20, 0x10, 0x30, 0x02, 0x22, 0x12, 0x32,
0x01, 0x21, 0x11, 0x31, 0x03, 0x23, 0x13, 0x33
};
/**
* Precalculated results of division by three and modulo three for values 0-107
*
* A lot of four-tuples in RV40 are represented as c0*27+c1*9+c2*3+c3
* This table allows conversion from value back to vector
*/
static const uint8_t modulo_three_table[108][4] = {
{ 0, 0, 0, 0 }, { 0, 0, 0, 1 }, { 0, 0, 0, 2 }, { 0, 0, 1, 0 },
{ 0, 0, 1, 1 }, { 0, 0, 1, 2 }, { 0, 0, 2, 0 }, { 0, 0, 2, 1 },
{ 0, 0, 2, 2 }, { 0, 1, 0, 0 }, { 0, 1, 0, 1 }, { 0, 1, 0, 2 },
{ 0, 1, 1, 0 }, { 0, 1, 1, 1 }, { 0, 1, 1, 2 }, { 0, 1, 2, 0 },
{ 0, 1, 2, 1 }, { 0, 1, 2, 2 }, { 0, 2, 0, 0 }, { 0, 2, 0, 1 },
{ 0, 2, 0, 2 }, { 0, 2, 1, 0 }, { 0, 2, 1, 1 }, { 0, 2, 1, 2 },
{ 0, 2, 2, 0 }, { 0, 2, 2, 1 }, { 0, 2, 2, 2 }, { 1, 0, 0, 0 },
{ 1, 0, 0, 1 }, { 1, 0, 0, 2 }, { 1, 0, 1, 0 }, { 1, 0, 1, 1 },
{ 1, 0, 1, 2 }, { 1, 0, 2, 0 }, { 1, 0, 2, 1 }, { 1, 0, 2, 2 },
{ 1, 1, 0, 0 }, { 1, 1, 0, 1 }, { 1, 1, 0, 2 }, { 1, 1, 1, 0 },
{ 1, 1, 1, 1 }, { 1, 1, 1, 2 }, { 1, 1, 2, 0 }, { 1, 1, 2, 1 },
{ 1, 1, 2, 2 }, { 1, 2, 0, 0 }, { 1, 2, 0, 1 }, { 1, 2, 0, 2 },
{ 1, 2, 1, 0 }, { 1, 2, 1, 1 }, { 1, 2, 1, 2 }, { 1, 2, 2, 0 },
{ 1, 2, 2, 1 }, { 1, 2, 2, 2 }, { 2, 0, 0, 0 }, { 2, 0, 0, 1 },
{ 2, 0, 0, 2 }, { 2, 0, 1, 0 }, { 2, 0, 1, 1 }, { 2, 0, 1, 2 },
{ 2, 0, 2, 0 }, { 2, 0, 2, 1 }, { 2, 0, 2, 2 }, { 2, 1, 0, 0 },
{ 2, 1, 0, 1 }, { 2, 1, 0, 2 }, { 2, 1, 1, 0 }, { 2, 1, 1, 1 },
{ 2, 1, 1, 2 }, { 2, 1, 2, 0 }, { 2, 1, 2, 1 }, { 2, 1, 2, 2 },
{ 2, 2, 0, 0 }, { 2, 2, 0, 1 }, { 2, 2, 0, 2 }, { 2, 2, 1, 0 },
{ 2, 2, 1, 1 }, { 2, 2, 1, 2 }, { 2, 2, 2, 0 }, { 2, 2, 2, 1 },
{ 2, 2, 2, 2 }, { 3, 0, 0, 0 }, { 3, 0, 0, 1 }, { 3, 0, 0, 2 },
{ 3, 0, 1, 0 }, { 3, 0, 1, 1 }, { 3, 0, 1, 2 }, { 3, 0, 2, 0 },
{ 3, 0, 2, 1 }, { 3, 0, 2, 2 }, { 3, 1, 0, 0 }, { 3, 1, 0, 1 },
{ 3, 1, 0, 2 }, { 3, 1, 1, 0 }, { 3, 1, 1, 1 }, { 3, 1, 1, 2 },
{ 3, 1, 2, 0 }, { 3, 1, 2, 1 }, { 3, 1, 2, 2 }, { 3, 2, 0, 0 },
{ 3, 2, 0, 1 }, { 3, 2, 0, 2 }, { 3, 2, 1, 0 }, { 3, 2, 1, 1 },
{ 3, 2, 1, 2 }, { 3, 2, 2, 0 }, { 3, 2, 2, 1 }, { 3, 2, 2, 2 },
};
/**
* Quantizer values used for AC and DC coefficients in chroma blocks
*/
static const uint8_t rv34_chroma_quant[2][32] = {
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 },
{ 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 }
};
/**
* This table is used for dequantizing
*/
static const uint16_t rv34_qscale_tab[32] = {
60, 67, 76, 85, 96, 108, 121, 136,
152, 171, 192, 216, 242, 272, 305, 341,
383, 432, 481, 544, 606, 683, 767, 854,
963, 1074, 1212, 1392, 1566, 1708, 1978, 2211
};
/**
* 4x4 dezigzag pattern
*/
static const uint8_t rv34_dezigzag[16] = {
0, 1, 8, 16,
9, 2, 3, 10,
17, 24, 25, 18,
11, 19, 26, 27
};
/**
* Tables used to translate quantizer value into VLC set for decoding
* First table is used for intraframes.
*/
static const uint8_t rv34_quant_to_vlc_set[2][31] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3,
3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 },
};
/**
* Table for obtaining quantizer difference
* @todo replace it with modified_quant_tab from h263data.h
*/
static const int8_t rv34_dquant_tab[] = {
0, 0, 2, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1,
-1, 1, -1, 1, -1, 1, -2, 2, -2, 2, -2, 2, -2, 2, -2, 2,
-2, 2, -2, 2, -2, 2, -2, 2, -2, 2, -3, 3, -3, 3, -3, 3,
-3, 3, -3, 3, -3, 3, -3, 3, -3, 3, -3, 2, -3, 1, -3, -5
};
/**
* Maximum number of macroblocks for each of the possible slice offset sizes
* @todo this is the same as ff_mba_max, maybe use it instead
*/
static const uint16_t rv34_mb_max_sizes[6] = { 0x2F, 0x68, 0x18B, 0x62F, 0x18BF, 0x23FF };
/**
* Bits needed to code slice offset for the given size
* @todo this is the same as ff_mba_length, maybe use it instead
*/
static const uint8_t rv34_mb_bits_sizes[6] = { 6, 7, 9, 11, 13, 14 };
#endif /* FFMPEG_RV34DATA_H */
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