1/* 2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder 3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22/** 23 * @file 24 * H.264 / AVC / MPEG4 prediction functions. 25 * @author Michael Niedermayer <michaelni@gmx.at> 26 */ 27 28#ifndef AVCODEC_H264PRED_H 29#define AVCODEC_H264PRED_H 30 31#include <stddef.h> 32#include <stdint.h> 33 34/** 35 * Prediction types 36 */ 37//@{ 38#define VERT_PRED 0 39#define HOR_PRED 1 40#define DC_PRED 2 41#define DIAG_DOWN_LEFT_PRED 3 42#define DIAG_DOWN_RIGHT_PRED 4 43#define VERT_RIGHT_PRED 5 44#define HOR_DOWN_PRED 6 45#define VERT_LEFT_PRED 7 46#define HOR_UP_PRED 8 47 48// DC edge (not for VP8) 49#define LEFT_DC_PRED 9 50#define TOP_DC_PRED 10 51#define DC_128_PRED 11 52 53// RV40 specific 54#define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12 55#define HOR_UP_PRED_RV40_NODOWN 13 56#define VERT_LEFT_PRED_RV40_NODOWN 14 57 58// VP8 specific 59#define TM_VP8_PRED 9 ///< "True Motion", used instead of plane 60#define VERT_VP8_PRED 10 ///< for VP8, #VERT_PRED is the average of 61 ///< (left col+cur col x2+right col) / 4; 62 ///< this is the "unaveraged" one 63#define HOR_VP8_PRED 14 ///< unaveraged version of #HOR_PRED, see 64 ///< #VERT_VP8_PRED for details 65#define DC_127_PRED 12 66#define DC_129_PRED 13 67 68#define DC_PRED8x8 0 69#define HOR_PRED8x8 1 70#define VERT_PRED8x8 2 71#define PLANE_PRED8x8 3 72 73// DC edge 74#define LEFT_DC_PRED8x8 4 75#define TOP_DC_PRED8x8 5 76#define DC_128_PRED8x8 6 77 78// H264/SVQ3 (8x8) specific 79#define ALZHEIMER_DC_L0T_PRED8x8 7 80#define ALZHEIMER_DC_0LT_PRED8x8 8 81#define ALZHEIMER_DC_L00_PRED8x8 9 82#define ALZHEIMER_DC_0L0_PRED8x8 10 83 84// VP8 specific 85#define DC_127_PRED8x8 7 86#define DC_129_PRED8x8 8 87//@} 88 89/** 90 * Context for storing H.264 prediction functions 91 */ 92typedef struct H264PredContext { 93 void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright, 94 ptrdiff_t stride); 95 void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright, 96 ptrdiff_t stride); 97 void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride); 98 void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride); 99 100 void(*pred4x4_add[2])(uint8_t *pix /*align 4*/, 101 int16_t *block /*align 16*/, ptrdiff_t stride); 102 void(*pred8x8l_add[2])(uint8_t *pix /*align 8*/, 103 int16_t *block /*align 16*/, ptrdiff_t stride); 104 void(*pred8x8l_filter_add[2])(uint8_t *pix /*align 8*/, 105 int16_t *block /*align 16*/, int topleft, int topright, ptrdiff_t stride); 106 void(*pred8x8_add[3])(uint8_t *pix /*align 8*/, 107 const int *block_offset, 108 int16_t *block /*align 16*/, ptrdiff_t stride); 109 void(*pred16x16_add[3])(uint8_t *pix /*align 16*/, 110 const int *block_offset, 111 int16_t *block /*align 16*/, ptrdiff_t stride); 112} H264PredContext; 113 114void ff_h264_pred_init(H264PredContext *h, int codec_id, 115 const int bit_depth, const int chroma_format_idc); 116void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, 117 const int bit_depth, const int chroma_format_idc); 118void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, 119 const int bit_depth, const int chroma_format_idc); 120 121#endif /* AVCODEC_H264PRED_H */ 122