blob: 2863dc9bd1945e732df21b161b3835e42dd3f834
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 | /** |
90 | * Context for storing H.264 prediction functions |
91 | */ |
92 | typedef 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 | |
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, |
117 | const int bit_depth, |
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); |
125 | |
126 | #endif /* AVCODEC_H264PRED_H */ |
127 |