h264pred.h (4935B)
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 / MPEG-4 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 // H.264/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 #define PART_NOT_AVAILABLE -2 90 91 /** 92 * Context for storing H.264 prediction functions 93 */ 94 typedef struct H264PredContext { 95 void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright, 96 ptrdiff_t stride); 97 void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright, 98 ptrdiff_t stride); 99 void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride); 100 void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride); 101 102 void(*pred4x4_add[2])(uint8_t *pix /*align 4*/, 103 int16_t *block /*align 16*/, ptrdiff_t stride); 104 void(*pred8x8l_add[2])(uint8_t *pix /*align 8*/, 105 int16_t *block /*align 16*/, ptrdiff_t stride); 106 void(*pred8x8l_filter_add[2])(uint8_t *pix /*align 8*/, 107 int16_t *block /*align 16*/, int topleft, int topright, ptrdiff_t stride); 108 void(*pred8x8_add[3])(uint8_t *pix /*align 8*/, 109 const int *block_offset, 110 int16_t *block /*align 16*/, ptrdiff_t stride); 111 void(*pred16x16_add[3])(uint8_t *pix /*align 16*/, 112 const int *block_offset, 113 int16_t *block /*align 16*/, ptrdiff_t stride); 114 } H264PredContext; 115 116 void ff_h264_pred_init(H264PredContext *h, int codec_id, 117 const int bit_depth, const int chroma_format_idc); 118 void ff_h264_pred_init_aarch64(H264PredContext *h, int codec_id, 119 const int bit_depth, 120 const int chroma_format_idc); 121 void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, 122 const int bit_depth, const int chroma_format_idc); 123 void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, 124 const int bit_depth, const int chroma_format_idc); 125 void ff_h264_pred_init_mips(H264PredContext *h, int codec_id, 126 const int bit_depth, const int chroma_format_idc); 127 void ff_h264_pred_init_loongarch(H264PredContext *h, int codec_id, 128 const int bit_depth, const int chroma_format_idc); 129 130 #endif /* AVCODEC_H264PRED_H */