mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-30 14:40:32 +00:00
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
|
|
* RealVideo 4 decoder
|
|
* copyright (c) 2007 Konstantin Shishkov
|
|
*
|
|
* 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
|
|
* miscellaneous RV40 tables
|
|
*/
|
|
|
|
#ifndef AVCODEC_RV40DATA_H
|
|
#define AVCODEC_RV40DATA_H
|
|
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* standard widths and heights coded in RV40
|
|
*/
|
|
//@{
|
|
static const int rv40_standard_widths[] = { 160, 172, 240, 320, 352, 640, 704, 0};
|
|
static const int rv40_standard_heights[] = { 120, 132, 144, 240, 288, 480, -8, -10, 180, 360, 576, 0};
|
|
//@}
|
|
|
|
#define MODE2_PATTERNS_NUM 20
|
|
/**
|
|
* intra types table
|
|
*
|
|
* These values are actually coded 3-tuples
|
|
* used for detecting standard block configurations.
|
|
*/
|
|
static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM] = {
|
|
0x000, 0x100, 0x200,
|
|
0x011, 0x111, 0x211, 0x511, 0x611,
|
|
0x022, 0x122, 0x222, 0x722,
|
|
0x272, 0x227,
|
|
0x822, 0x282, 0x228,
|
|
0x112, 0x116, 0x221
|
|
};
|
|
|
|
/**
|
|
* luma quantizer values
|
|
* The second table is used for inter blocks.
|
|
*/
|
|
static const uint8_t rv40_luma_dc_quant[2][32] = {
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 22, 22, 22, 22 },
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 18, 19, 20, 20, 21, 21, 22, 23, 23, 23, 24, 24, 24, 24 }
|
|
};
|
|
|
|
/**
|
|
* @name Coefficients used by the RV40 loop filter
|
|
* @{
|
|
*/
|
|
|
|
/** alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
|
|
static const uint8_t rv40_alpha_tab[32] = {
|
|
128, 128, 128, 128, 128, 128, 128, 128,
|
|
128, 128, 122, 96, 75, 59, 47, 37,
|
|
29, 23, 18, 15, 13, 11, 10, 9,
|
|
8, 7, 6, 5, 4, 3, 2, 1
|
|
};
|
|
/** beta parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
|
|
static const uint8_t rv40_beta_tab[32] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 4, 4, 4, 6, 6,
|
|
6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14, 15, 16, 17
|
|
};
|
|
/** clip table for RV40 loop filter - the same as in JVT-A003r1 */
|
|
static const uint8_t rv40_filter_clip_tbl[3][32] = {
|
|
{
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
},
|
|
{
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
|
|
1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5
|
|
},
|
|
{
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1,
|
|
1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 7, 8, 9
|
|
}
|
|
};
|
|
/** @} */ // end loopfilter group
|
|
|
|
#endif /* AVCODEC_RV40DATA_H */
|