FFmpeg
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)\
29 static void FUNCC(OPNAME ## h264_chroma_mc1)(uint8_t *_dst /*align 8*/, uint8_t *_src /*align 1*/, ptrdiff_t stride, int h, int x, int y){\
30  pixel *dst = (pixel*)_dst;\
31  pixel *src = (pixel*)_src;\
32  const int A=(8-x)*(8-y);\
33  const int B=( x)*(8-y);\
34  const int C=(8-x)*( y);\
35  const int D=( x)*( y);\
36  int i;\
37  stride >>= sizeof(pixel)-1;\
38  \
39  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
40 \
41  if(D){\
42  for(i=0; i<h; i++){\
43  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
44  dst+= stride;\
45  src+= stride;\
46  }\
47  } else if (B + C) {\
48  const int E= B+C;\
49  const int step= C ? stride : 1;\
50  for(i=0; i<h; i++){\
51  OP(dst[0], (A*src[0] + E*src[step+0]));\
52  dst+= stride;\
53  src+= stride;\
54  }\
55  } else {\
56  for(i=0; i<h; i++){\
57  OP(dst[0], (A*src[0]));\
58  dst+= stride;\
59  src+= stride;\
60  }\
61  }\
62 }\
63 static void FUNCC(OPNAME ## h264_chroma_mc2)(uint8_t *_dst /*align 8*/, uint8_t *_src /*align 1*/, ptrdiff_t stride, int h, int x, int y)\
64 {\
65  pixel *dst = (pixel*)_dst;\
66  pixel *src = (pixel*)_src;\
67  const int A=(8-x)*(8-y);\
68  const int B=( x)*(8-y);\
69  const int C=(8-x)*( y);\
70  const int D=( x)*( y);\
71  int i;\
72  stride >>= sizeof(pixel)-1;\
73  \
74  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
75 \
76  if(D){\
77  for(i=0; i<h; i++){\
78  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
79  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
80  dst+= stride;\
81  src+= stride;\
82  }\
83  } else if (B + C) {\
84  const int E= B+C;\
85  const ptrdiff_t step = C ? stride : 1;\
86  for(i=0; i<h; i++){\
87  OP(dst[0], (A*src[0] + E*src[step+0]));\
88  OP(dst[1], (A*src[1] + E*src[step+1]));\
89  dst+= stride;\
90  src+= stride;\
91  }\
92  } else {\
93  for ( i = 0; i < h; i++){\
94  OP(dst[0], A * src[0]);\
95  OP(dst[1], A * src[1]);\
96  dst += stride;\
97  src += stride;\
98  }\
99  }\
100 }\
101 \
102 static void FUNCC(OPNAME ## h264_chroma_mc4)(uint8_t *_dst /*align 8*/, uint8_t *_src /*align 1*/, ptrdiff_t stride, int h, int x, int y)\
103 {\
104  pixel *dst = (pixel*)_dst;\
105  pixel *src = (pixel*)_src;\
106  const int A=(8-x)*(8-y);\
107  const int B=( x)*(8-y);\
108  const int C=(8-x)*( y);\
109  const int D=( x)*( y);\
110  int i;\
111  stride >>= sizeof(pixel)-1;\
112  \
113  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
114 \
115  if(D){\
116  for(i=0; i<h; i++){\
117  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
118  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
119  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3]));\
120  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4]));\
121  dst+= stride;\
122  src+= stride;\
123  }\
124  } else if (B + C) {\
125  const int E= B+C;\
126  const ptrdiff_t step = C ? stride : 1;\
127  for(i=0; i<h; i++){\
128  OP(dst[0], (A*src[0] + E*src[step+0]));\
129  OP(dst[1], (A*src[1] + E*src[step+1]));\
130  OP(dst[2], (A*src[2] + E*src[step+2]));\
131  OP(dst[3], (A*src[3] + E*src[step+3]));\
132  dst+= stride;\
133  src+= stride;\
134  }\
135  } else {\
136  for ( i = 0; i < h; i++){\
137  OP(dst[0], A * src[0]);\
138  OP(dst[1], A * src[1]);\
139  OP(dst[2], A * src[2]);\
140  OP(dst[3], A * src[3]);\
141  dst += stride;\
142  src += stride;\
143  }\
144  }\
145 }\
146 \
147 static void FUNCC(OPNAME ## h264_chroma_mc8)(uint8_t *_dst /*align 8*/, uint8_t *_src /*align 1*/, ptrdiff_t stride, int h, int x, int y)\
148 {\
149  pixel *dst = (pixel*)_dst;\
150  pixel *src = (pixel*)_src;\
151  const int A=(8-x)*(8-y);\
152  const int B=( x)*(8-y);\
153  const int C=(8-x)*( y);\
154  const int D=( x)*( y);\
155  int i;\
156  stride >>= sizeof(pixel)-1;\
157  \
158  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
159 \
160  if(D){\
161  for(i=0; i<h; i++){\
162  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
163  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2]));\
164  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3]));\
165  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4]));\
166  OP(dst[4], (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5]));\
167  OP(dst[5], (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6]));\
168  OP(dst[6], (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7]));\
169  OP(dst[7], (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8]));\
170  dst+= stride;\
171  src+= stride;\
172  }\
173  } else if (B + C) {\
174  const int E= B+C;\
175  const ptrdiff_t step = C ? stride : 1;\
176  for(i=0; i<h; i++){\
177  OP(dst[0], (A*src[0] + E*src[step+0]));\
178  OP(dst[1], (A*src[1] + E*src[step+1]));\
179  OP(dst[2], (A*src[2] + E*src[step+2]));\
180  OP(dst[3], (A*src[3] + E*src[step+3]));\
181  OP(dst[4], (A*src[4] + E*src[step+4]));\
182  OP(dst[5], (A*src[5] + E*src[step+5]));\
183  OP(dst[6], (A*src[6] + E*src[step+6]));\
184  OP(dst[7], (A*src[7] + E*src[step+7]));\
185  dst+= stride;\
186  src+= stride;\
187  }\
188  } else {\
189  for ( i = 0; i < h; i++){\
190  OP(dst[0], A * src[0]);\
191  OP(dst[1], A * src[1]);\
192  OP(dst[2], A * src[2]);\
193  OP(dst[3], A * src[3]);\
194  OP(dst[4], A * src[4]);\
195  OP(dst[5], A * src[5]);\
196  OP(dst[6], A * src[6]);\
197  OP(dst[7], A * src[7]);\
198  dst += stride;\
199  src += stride;\
200  }\
201  }\
202 }
203 
204 #define op_avg(a, b) a = (((a)+(((b) + 32)>>6)+1)>>1)
205 #define op_put(a, b) a = (((b) + 32)>>6)
206 
207 H264_CHROMA_MC(put_ , op_put)
208 H264_CHROMA_MC(avg_ , op_avg)
209 #undef op_avg
210 #undef op_put
#define op_put(a, b)
#define H264_CHROMA_MC(OPNAME, OP)
simple assert() macros that are a bit more flexible than ISO C assert().
#define op_avg(a, b)