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h264pred.h
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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 / 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 <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 // 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,
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);
113 
115  const int bit_depth, const int chroma_format_idc);
117  const int bit_depth,
118  const int chroma_format_idc);
120  const int bit_depth, const int chroma_format_idc);
122  const int bit_depth, const int chroma_format_idc);
124  const int bit_depth, const int chroma_format_idc);
125 
126 #endif /* AVCODEC_H264PRED_H */
void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, const int bit_depth, const int chroma_format_idc)
void(* pred8x8l_add[2])(uint8_t *pix, int16_t *block, ptrdiff_t stride)
Definition: h264pred.h:102
void ff_h264_pred_init_mips(H264PredContext *h, int codec_id, const int bit_depth, const int chroma_format_idc)
void(* pred8x8l_filter_add[2])(uint8_t *pix, int16_t *block, int topleft, int topright, ptrdiff_t stride)
Definition: h264pred.h:104
void(* pred16x16_add[3])(uint8_t *pix, const int *block_offset, int16_t *block, ptrdiff_t stride)
Definition: h264pred.h:109
uint8_t
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void(* pred8x8[4+3+4])(uint8_t *src, ptrdiff_t stride)
Definition: h264pred.h:97
void(* pred4x4[9+3+3])(uint8_t *src, const uint8_t *topright, ptrdiff_t stride)
Definition: h264pred.h:93
enum AVCodecID codec_id
Definition: mov_chan.c:433
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, const int chroma_format_idc)
Set the intra prediction function pointers.
Definition: h264pred.c:411
void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, const int bit_depth, const int chroma_format_idc)
void(* pred4x4_add[2])(uint8_t *pix, int16_t *block, ptrdiff_t stride)
Definition: h264pred.h:100
#define src
Definition: vp9dsp.c:530
void(* pred16x16[4+3+2])(uint8_t *src, ptrdiff_t stride)
Definition: h264pred.h:98
static unsigned bit_depth(uint64_t mask)
Definition: af_astats.c:142
void(* pred8x8_add[3])(uint8_t *pix, const int *block_offset, int16_t *block, ptrdiff_t stride)
Definition: h264pred.h:106
void ff_h264_pred_init_aarch64(H264PredContext *h, int codec_id, const int bit_depth, const int chroma_format_idc)
Definition: h264pred_init.c:86
#define stride
void(* pred8x8l[9+3])(uint8_t *src, int topleft, int topright, ptrdiff_t stride)
Definition: h264pred.h:95
static int16_t block[64]
Definition: dct-test.c:112