Horizontal and vertical prediction functions needed for new lossless mode
[libav.git] / libavcodec / h264pred.h
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 h264pred.h
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 "libavutil/common.h"
32
33 /**
34 * Prediction types
35 */
36 //@{
37 #define VERT_PRED 0
38 #define HOR_PRED 1
39 #define DC_PRED 2
40 #define DIAG_DOWN_LEFT_PRED 3
41 #define DIAG_DOWN_RIGHT_PRED 4
42 #define VERT_RIGHT_PRED 5
43 #define HOR_DOWN_PRED 6
44 #define VERT_LEFT_PRED 7
45 #define HOR_UP_PRED 8
46
47 #define LEFT_DC_PRED 9
48 #define TOP_DC_PRED 10
49 #define DC_128_PRED 11
50
51 #define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12
52 #define HOR_UP_PRED_RV40_NODOWN 13
53 #define VERT_LEFT_PRED_RV40_NODOWN 14
54
55 #define DC_PRED8x8 0
56 #define HOR_PRED8x8 1
57 #define VERT_PRED8x8 2
58 #define PLANE_PRED8x8 3
59
60 #define LEFT_DC_PRED8x8 4
61 #define TOP_DC_PRED8x8 5
62 #define DC_128_PRED8x8 6
63
64 #define ALZHEIMER_DC_L0T_PRED8x8 7
65 #define ALZHEIMER_DC_0LT_PRED8x8 8
66 #define ALZHEIMER_DC_L00_PRED8x8 9
67 #define ALZHEIMER_DC_0L0_PRED8x8 10
68 //@}
69
70 /**
71 * Context for storing H.264 prediction functions
72 */
73 typedef struct H264PredContext{
74 void (*pred4x4 [9+3+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
75 void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
76 void (*pred8x8 [4+3+4])(uint8_t *src, int stride);
77 void (*pred16x16[4+3])(uint8_t *src, int stride);
78
79 void (*pred4x4_add [2])(uint8_t *pix/*align 4*/, const DCTELEM *block/*align 16*/, int stride);
80 void (*pred8x8l_add [2])(uint8_t *pix/*align 8*/, const DCTELEM *block/*align 16*/, int stride);
81 void (*pred8x8_add [3])(uint8_t *pix/*align 8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
82 void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
83 }H264PredContext;
84
85 void ff_h264_pred_init(H264PredContext *h, int codec_id);
86
87 #endif /* AVCODEC_H264PRED_H */