Statistics
| Branch: | Revision:

ffmpeg / libavcodec / h264pred.h @ 2912e87a

History | View | Annotate | Download (3.71 KB)

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 Libav.
6
 *
7
 * Libav 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
 * Libav 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 Libav; 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 "libavutil/common.h"
32
#include "dsputil.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          11    ///< 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
 */
92
typedef struct H264PredContext{
93
    void (*pred4x4  [9+3+3])(uint8_t *src, const uint8_t *topright, int stride);//FIXME move to dsp?
94
    void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
95
    void (*pred8x8  [4+3+4])(uint8_t *src, int stride);
96
    void (*pred16x16[4+3+2])(uint8_t *src, int stride);
97

    
98
    void (*pred4x4_add  [2])(uint8_t *pix/*align  4*/, const DCTELEM *block/*align 16*/, int stride);
99
    void (*pred8x8l_add [2])(uint8_t *pix/*align  8*/, const DCTELEM *block/*align 16*/, int stride);
100
    void (*pred8x8_add  [3])(uint8_t *pix/*align  8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
101
    void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
102
}H264PredContext;
103

    
104
void ff_h264_pred_init(H264PredContext *h, int codec_id);
105
void ff_h264_pred_init_arm(H264PredContext *h, int codec_id);
106
void ff_h264_pred_init_x86(H264PredContext *h, int codec_id);
107

    
108
#endif /* AVCODEC_H264PRED_H */