FFmpeg
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h264chroma_template.c
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1/*
2 * Copyright (c) 2000, 2001 Fabrice Bellard
3 * Copyright (c) 2002-2004 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#include <stddef.h>
24
25#include "libavutil/avassert.h"
26#include "bit_depth_template.c"
27
28#define H264_CHROMA_MC(OPNAME, OP)\
29MC2_STATIC void FUNCC(ff_ ## OPNAME ## h264_chroma_mc2)(uint8_t *_dst, const uint8_t *_src, ptrdiff_t stride, int h, int x, int y)\
30{\
31 pixel *dst = (pixel*)_dst;\
32 const pixel *src = (const pixel*)_src;\
33 const int A=(8-x)*(8-y);\
34 const int B=( x)*(8-y);\
35 const int C=(8-x)*( y);\
36 const int D=( x)*( y);\
37 int i;\
38 stride >>= sizeof(pixel)-1;\
39 \
40 av_assert2(x<8 && y<8 && x>=0 && y>=0);\
41\
42 if(D){\
43 for(i=0; i<h; i++){\
44 OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
45 OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
46 dst+= stride;\
47 src+= stride;\
48 }\
49 } else if (B + C) {\
50 const int E= B+C;\
51 const ptrdiff_t step = C ? stride : 1;\
52 for(i=0; i<h; i++){\
53 OP(dst[0], (A*src[0] + E*src[step+0]));\
54 OP(dst[1], (A*src[1] + E*src[step+1]));\
55 dst+= stride;\
56 src+= stride;\
57 }\
58 } else {\
59 for ( i = 0; i < h; i++){\
60 OP(dst[0], A * src[0]);\
61 OP(dst[1], A * src[1]);\
62 dst += stride;\
63 src += stride;\
64 }\
65 }\
66}\
67\
68static void FUNCC(OPNAME ## h264_chroma_mc4)(uint8_t *_dst, const uint8_t *_src, ptrdiff_t stride, int h, int x, int y)\
69{\
70 pixel *dst = (pixel*)_dst;\
71 const pixel *src = (const pixel*)_src;\
72 const int A=(8-x)*(8-y);\
73 const int B=( x)*(8-y);\
74 const int C=(8-x)*( y);\
75 const int D=( x)*( y);\
76 int i;\
77 stride >>= sizeof(pixel)-1;\
78 \
79 av_assert2(x<8 && y<8 && x>=0 && y>=0);\
80\
81 if(D){\
82 for(i=0; i<h; i++){\
83 OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
84 OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
85 OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3]));\
86 OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4]));\
87 dst+= stride;\
88 src+= stride;\
89 }\
90 } else if (B + C) {\
91 const int E= B+C;\
92 const ptrdiff_t step = C ? stride : 1;\
93 for(i=0; i<h; i++){\
94 OP(dst[0], (A*src[0] + E*src[step+0]));\
95 OP(dst[1], (A*src[1] + E*src[step+1]));\
96 OP(dst[2], (A*src[2] + E*src[step+2]));\
97 OP(dst[3], (A*src[3] + E*src[step+3]));\
98 dst+= stride;\
99 src+= stride;\
100 }\
101 } else {\
102 for ( i = 0; i < h; i++){\
103 OP(dst[0], A * src[0]);\
104 OP(dst[1], A * src[1]);\
105 OP(dst[2], A * src[2]);\
106 OP(dst[3], A * src[3]);\
107 dst += stride;\
108 src += stride;\
109 }\
110 }\
111}\
112\
113static void FUNCC(OPNAME ## h264_chroma_mc8)(uint8_t *_dst, const uint8_t *_src, ptrdiff_t stride, int h, int x, int y)\
114{\
115 pixel *dst = (pixel*)_dst;\
116 const pixel *src = (const pixel*)_src;\
117 const int A=(8-x)*(8-y);\
118 const int B=( x)*(8-y);\
119 const int C=(8-x)*( y);\
120 const int D=( x)*( y);\
121 int i;\
122 stride >>= sizeof(pixel)-1;\
123 \
124 av_assert2(x<8 && y<8 && x>=0 && y>=0);\
125\
126 if(D){\
127 for(i=0; i<h; i++){\
128 OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
129 OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
130 OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3]));\
131 OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4]));\
132 OP(dst[4], (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5]));\
133 OP(dst[5], (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6]));\
134 OP(dst[6], (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7]));\
135 OP(dst[7], (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8]));\
136 dst+= stride;\
137 src+= stride;\
138 }\
139 } else if (B + C) {\
140 const int E= B+C;\
141 const ptrdiff_t step = C ? stride : 1;\
142 for(i=0; i<h; i++){\
143 OP(dst[0], (A*src[0] + E*src[step+0]));\
144 OP(dst[1], (A*src[1] + E*src[step+1]));\
145 OP(dst[2], (A*src[2] + E*src[step+2]));\
146 OP(dst[3], (A*src[3] + E*src[step+3]));\
147 OP(dst[4], (A*src[4] + E*src[step+4]));\
148 OP(dst[5], (A*src[5] + E*src[step+5]));\
149 OP(dst[6], (A*src[6] + E*src[step+6]));\
150 OP(dst[7], (A*src[7] + E*src[step+7]));\
151 dst+= stride;\
152 src+= stride;\
153 }\
154 } else {\
155 for ( i = 0; i < h; i++){\
156 OP(dst[0], A * src[0]);\
157 OP(dst[1], A * src[1]);\
158 OP(dst[2], A * src[2]);\
159 OP(dst[3], A * src[3]);\
160 OP(dst[4], A * src[4]);\
161 OP(dst[5], A * src[5]);\
162 OP(dst[6], A * src[6]);\
163 OP(dst[7], A * src[7]);\
164 dst += stride;\
165 src += stride;\
166 }\
167 }\
168}
169
170#define op_avg(a, b) a = (((a)+(((b) + 32)>>6)+1)>>1)
171#define op_put(a, b) a = (((b) + 32)>>6)
172
173H264_CHROMA_MC(put_ , op_put)
174H264_CHROMA_MC(avg_ , op_avg)
175#undef op_avg
176#undef op_put
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
bit_depth_template.c
op_put
#define op_put(a, b)
Definition h264chroma_template.c:171
op_avg
#define op_avg(a, b)
Definition h264chroma_template.c:170
H264_CHROMA_MC
#define H264_CHROMA_MC(OPNAME, OP)
Definition h264chroma_template.c:28
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