2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
24 * H.264 / AVC / MPEG-4 prediction functions.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #ifndef AVCODEC_H264PRED_H
29 #define AVCODEC_H264PRED_H
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
48 // DC edge (not for VP8)
49 #define LEFT_DC_PRED 9
50 #define TOP_DC_PRED 10
51 #define DC_128_PRED 11
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
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
70 #define VERT_PRED8x8 2
71 #define PLANE_PRED8x8 3
74 #define LEFT_DC_PRED8x8 4
75 #define TOP_DC_PRED8x8 5
76 #define DC_128_PRED8x8 6
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
85 #define DC_127_PRED8x8 7
86 #define DC_129_PRED8x8 8
90 * Context for storing H.264 prediction functions
92 typedef struct H264PredContext {
93 void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright,
95 void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright,
97 void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride);
98 void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride);
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);
114 void ff_h264_pred_init(H264PredContext *h, int codec_id,
115 const int bit_depth, const int chroma_format_idc);
116 void ff_h264_pred_init_aarch64(H264PredContext *h, int codec_id,
118 const int chroma_format_idc);
119 void ff_h264_pred_init_arm(H264PredContext *h, int codec_id,
120 const int bit_depth, const int chroma_format_idc);
121 void ff_h264_pred_init_x86(H264PredContext *h, int codec_id,
122 const int bit_depth, const int chroma_format_idc);
123 void ff_h264_pred_init_mips(H264PredContext *h, int codec_id,
124 const int bit_depth, const int chroma_format_idc);
126 #endif /* AVCODEC_H264PRED_H */