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ffmpeg/libavcodec/h264data.h
Michael Niedermayer b7d1488393 h264: move q0 scan tables into context 
This fixes out of global array reads.
The alternative solutions of checking the index or modifying the VLC tables
to prevent the index going outside are each about 1-2 cpu cyclces slower
per coded 4x4 block.
The alternative of padding the global tables directly is more ugly and
moving them to the context should benefit cache locality.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-31 20:25:23 +02:00

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/*
* H26L/H264/AVC/JVT/14496-10/... encoder/decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* 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
* @brief
* H264 / AVC / MPEG4 part10 codec data table
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#ifndef AVCODEC_H264DATA_H
#define AVCODEC_H264DATA_H
#include <stdint.h>
#include "libavutil/rational.h"
#include "mpegvideo.h"
#include "h264.h"
static const uint8_t golomb_to_pict_type[5] = {
AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, AV_PICTURE_TYPE_I,
AV_PICTURE_TYPE_SP, AV_PICTURE_TYPE_SI
};
static const uint8_t golomb_to_intra4x4_cbp[48] = {
47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46,
16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4,
8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41
};
static const uint8_t golomb_to_inter_cbp[48] = {
0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13,
14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46,
17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41
};
static const uint8_t zigzag_scan[16+1] = {
0 + 0 * 4, 1 + 0 * 4, 0 + 1 * 4, 0 + 2 * 4,
1 + 1 * 4, 2 + 0 * 4, 3 + 0 * 4, 2 + 1 * 4,
1 + 2 * 4, 0 + 3 * 4, 1 + 3 * 4, 2 + 2 * 4,
3 + 1 * 4, 3 + 2 * 4, 2 + 3 * 4, 3 + 3 * 4,
};
static const uint8_t field_scan[16+1] = {
0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
};
static const uint8_t luma_dc_zigzag_scan[16] = {
0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64,
3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64,
1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64,
3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64,
};
static const uint8_t luma_dc_field_scan[16] = {
0 * 16 + 0 * 64, 2 * 16 + 0 * 64, 1 * 16 + 0 * 64, 0 * 16 + 2 * 64,
2 * 16 + 2 * 64, 3 * 16 + 0 * 64, 1 * 16 + 2 * 64, 3 * 16 + 2 * 64,
0 * 16 + 1 * 64, 2 * 16 + 1 * 64, 0 * 16 + 3 * 64, 2 * 16 + 3 * 64,
1 * 16 + 1 * 64, 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 3 * 16 + 3 * 64,
};
static const uint8_t chroma_dc_scan[4] = {
(0 + 0 * 2) * 16, (1 + 0 * 2) * 16,
(0 + 1 * 2) * 16, (1 + 1 * 2) * 16,
};
static const uint8_t chroma422_dc_scan[8] = {
(0 + 0 * 2) * 16, (0 + 1 * 2) * 16,
(1 + 0 * 2) * 16, (0 + 2 * 2) * 16,
(0 + 3 * 2) * 16, (1 + 1 * 2) * 16,
(1 + 2 * 2) * 16, (1 + 3 * 2) * 16,
};
// zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
};
static const uint8_t field_scan8x8[64+1] = {
0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
};
static const uint8_t field_scan8x8_cavlc[64+1] = {
0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
};
typedef struct IMbInfo {
uint16_t type;
uint8_t pred_mode;
uint8_t cbp;
} IMbInfo;
static const IMbInfo i_mb_type_info[26] = {
{ MB_TYPE_INTRA4x4, -1, -1 },
{ MB_TYPE_INTRA16x16, 2, 0 },
{ MB_TYPE_INTRA16x16, 1, 0 },
{ MB_TYPE_INTRA16x16, 0, 0 },
{ MB_TYPE_INTRA16x16, 3, 0 },
{ MB_TYPE_INTRA16x16, 2, 16 },
{ MB_TYPE_INTRA16x16, 1, 16 },
{ MB_TYPE_INTRA16x16, 0, 16 },
{ MB_TYPE_INTRA16x16, 3, 16 },
{ MB_TYPE_INTRA16x16, 2, 32 },
{ MB_TYPE_INTRA16x16, 1, 32 },
{ MB_TYPE_INTRA16x16, 0, 32 },
{ MB_TYPE_INTRA16x16, 3, 32 },
{ MB_TYPE_INTRA16x16, 2, 15 + 0 },
{ MB_TYPE_INTRA16x16, 1, 15 + 0 },
{ MB_TYPE_INTRA16x16, 0, 15 + 0 },
{ MB_TYPE_INTRA16x16, 3, 15 + 0 },
{ MB_TYPE_INTRA16x16, 2, 15 + 16 },
{ MB_TYPE_INTRA16x16, 1, 15 + 16 },
{ MB_TYPE_INTRA16x16, 0, 15 + 16 },
{ MB_TYPE_INTRA16x16, 3, 15 + 16 },
{ MB_TYPE_INTRA16x16, 2, 15 + 32 },
{ MB_TYPE_INTRA16x16, 1, 15 + 32 },
{ MB_TYPE_INTRA16x16, 0, 15 + 32 },
{ MB_TYPE_INTRA16x16, 3, 15 + 32 },
{ MB_TYPE_INTRA_PCM, -1, -1 },
};
typedef struct PMbInfo {
uint16_t type;
uint8_t partition_count;
} PMbInfo;
static const PMbInfo p_mb_type_info[5] = {
{ MB_TYPE_16x16 | MB_TYPE_P0L0, 1 },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2 },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2 },
{ MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 4 },
{ MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_REF0, 4 },
};
static const PMbInfo p_sub_mb_type_info[4] = {
{ MB_TYPE_16x16 | MB_TYPE_P0L0, 1 },
{ MB_TYPE_16x8 | MB_TYPE_P0L0, 2 },
{ MB_TYPE_8x16 | MB_TYPE_P0L0, 2 },
{ MB_TYPE_8x8 | MB_TYPE_P0L0, 4 },
};
static const PMbInfo b_mb_type_info[23] = {
{ MB_TYPE_DIRECT2 | MB_TYPE_L0L1, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L0, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L1, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1, 1, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L1 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L1 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 4, },
};
static const PMbInfo b_sub_mb_type_info[13] = {
{ MB_TYPE_DIRECT2, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L0, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L1, 1, },
{ MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1, 1, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_16x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
{ MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P1L0, 4, },
{ MB_TYPE_8x8 | MB_TYPE_P0L1 | MB_TYPE_P1L1, 4, },
{ MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 4, },
};
static const uint8_t dequant4_coeff_init[6][3] = {
{ 10, 13, 16 },
{ 11, 14, 18 },
{ 13, 16, 20 },
{ 14, 18, 23 },
{ 16, 20, 25 },
{ 18, 23, 29 },
};
static const uint8_t dequant8_coeff_init_scan[16] = {
0, 3, 4, 3, 3, 1, 5, 1, 4, 5, 2, 5, 3, 1, 5, 1
};
static const uint8_t dequant8_coeff_init[6][6] = {
{ 20, 18, 32, 19, 25, 24 },
{ 22, 19, 35, 21, 28, 26 },
{ 26, 23, 42, 24, 33, 31 },
{ 28, 25, 45, 26, 35, 33 },
{ 32, 28, 51, 30, 40, 38 },
{ 36, 32, 58, 34, 46, 43 },
};
#endif /* AVCODEC_H264DATA_H */
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