forked from FFmpeg/FFmpeg
-
Notifications
You must be signed in to change notification settings - Fork 0
/
bayer_template.c
236 lines (217 loc) · 6.6 KB
/
bayer_template.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
/*
* Bayer-to-RGB/YV12 template
* Copyright (c) 2011-2014 Peter Ross <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if defined(BAYER_BGGR) || defined(BAYER_GBRG)
#define BAYER_R 0
#define BAYER_G 1
#define BAYER_B 2
#endif
#if defined(BAYER_RGGB) || defined(BAYER_GRBG)
#define BAYER_R 2
#define BAYER_G 1
#define BAYER_B 0
#endif
#if defined(BAYER_8)
#define BAYER_READ(x) (x)
#define BAYER_SIZEOF 1
#define BAYER_SHIFT 0
#endif
#if defined(BAYER_16LE)
#define BAYER_READ(x) AV_RL16(&(x))
#define BAYER_SIZEOF 2
#define BAYER_SHIFT 8
#endif
#if defined(BAYER_16BE)
#define BAYER_READ(x) AV_RB16(&(x))
#define BAYER_SIZEOF 2
#define BAYER_SHIFT 8
#endif
#define S(y, x) BAYER_READ(src[(y)*src_stride + BAYER_SIZEOF*(x)])
#define T(y, x) (unsigned int)S(y, x)
#define R(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_R]
#define G(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_G]
#define B(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_B]
#if defined(BAYER_BGGR) || defined(BAYER_RGGB)
#define BAYER_TO_RGB24_COPY \
R(0, 0) = \
R(0, 1) = \
R(1, 1) = \
R(1, 0) = S(1, 1) >> BAYER_SHIFT; \
\
G(0, 1) = S(0, 1) >> BAYER_SHIFT; \
G(0, 0) = \
G(1, 1) = (T(0, 1) + T(1, 0)) >> (1 + BAYER_SHIFT); \
G(1, 0) = S(1, 0) >> BAYER_SHIFT; \
\
B(1, 1) = \
B(0, 0) = \
B(0, 1) = \
B(1, 0) = S(0, 0) >> BAYER_SHIFT;
#define BAYER_TO_RGB24_INTERPOLATE \
R(0, 0) = (T(-1, -1) + T(-1, 1) + T(1, -1) + T(1, 1)) >> (2 + BAYER_SHIFT); \
G(0, 0) = (T(-1, 0) + T( 0, -1) + T(0, 1) + T(1, 0)) >> (2 + BAYER_SHIFT); \
B(0, 0) = S(0, 0) >> BAYER_SHIFT; \
\
R(0, 1) = (T(-1, 1) + T(1, 1)) >> (1 + BAYER_SHIFT); \
G(0, 1) = S(0, 1) >> BAYER_SHIFT; \
B(0, 1) = (T(0, 0) + T(0, 2)) >> (1 + BAYER_SHIFT); \
\
R(1, 0) = (T(1, -1) + T(1, 1)) >> (1 + BAYER_SHIFT); \
G(1, 0) = S(1, 0) >> BAYER_SHIFT; \
B(1, 0) = (T(0, 0) + T(2, 0)) >> (1 + BAYER_SHIFT); \
\
R(1, 1) = S(1, 1) >> BAYER_SHIFT; \
G(1, 1) = (T(0, 1) + T(1, 0) + T(1, 2) + T(2, 1)) >> (2 + BAYER_SHIFT); \
B(1, 1) = (T(0, 0) + T(0, 2) + T(2, 0) + T(2, 2)) >> (2 + BAYER_SHIFT);
#else
#define BAYER_TO_RGB24_COPY \
R(0, 0) = \
R(0, 1) = \
R(1, 1) = \
R(1, 0) = S(1, 0) >> BAYER_SHIFT; \
\
G(0, 0) = S(0, 0) >> BAYER_SHIFT; \
G(1, 1) = S(1, 1) >> BAYER_SHIFT; \
G(0, 1) = \
G(1, 0) = (T(0, 0) + T(1, 1)) >> (1 + BAYER_SHIFT); \
\
B(1, 1) = \
B(0, 0) = \
B(0, 1) = \
B(1, 0) = S(0, 1) >> BAYER_SHIFT;
#define BAYER_TO_RGB24_INTERPOLATE \
R(0, 0) = (T(-1, 0) + T(1, 0)) >> (1 + BAYER_SHIFT); \
G(0, 0) = S(0, 0) >> BAYER_SHIFT; \
B(0, 0) = (T(0, -1) + T(0, 1)) >> (1 + BAYER_SHIFT); \
\
R(0, 1) = (T(-1, 0) + T(-1, 2) + T(1, 0) + T(1, 2)) >> (2 + BAYER_SHIFT); \
G(0, 1) = (T(-1, 1) + T(0, 0) + T(0, 2) + T(1, 1)) >> (2 + BAYER_SHIFT); \
B(0, 1) = S(0, 1) >> BAYER_SHIFT; \
\
R(1, 0) = S(1, 0) >> BAYER_SHIFT; \
G(1, 0) = (T(0, 0) + T(1, -1) + T(1, 1) + T(2, 0)) >> (2 + BAYER_SHIFT); \
B(1, 0) = (T(0, -1) + T(0, 1) + T(2, -1) + T(2, 1)) >> (2 + BAYER_SHIFT); \
\
R(1, 1) = (T(1, 0) + T(1, 2)) >> (1 + BAYER_SHIFT); \
G(1, 1) = S(1, 1) >> BAYER_SHIFT; \
B(1, 1) = (T(0, 1) + T(2, 1)) >> (1 + BAYER_SHIFT);
#endif
/**
* invoke ff_rgb24toyv12 for 2x2 pixels
*/
#define rgb24toyv12_2x2(src, dstY, dstU, dstV, luma_stride, src_stride, rgb2yuv) \
ff_rgb24toyv12(src, dstY, dstV, dstU, 2, 2, luma_stride, 0, src_stride, rgb2yuv)
static void BAYER_RENAME(rgb24_copy)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width)
{
int i;
for (i = 0 ; i < width; i+= 2) {
BAYER_TO_RGB24_COPY
src += 2 * BAYER_SIZEOF;
dst += 6;
}
}
static void BAYER_RENAME(rgb24_interpolate)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width)
{
int i;
BAYER_TO_RGB24_COPY
src += 2 * BAYER_SIZEOF;
dst += 6;
for (i = 2 ; i < width - 2; i+= 2) {
BAYER_TO_RGB24_INTERPOLATE
src += 2 * BAYER_SIZEOF;
dst += 6;
}
if (width > 2) {
BAYER_TO_RGB24_COPY
}
}
static void BAYER_RENAME(yv12_copy)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv)
{
uint8_t dst[12];
const int dst_stride = 6;
int i;
for (i = 0 ; i < width; i+= 2) {
BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;
}
}
static void BAYER_RENAME(yv12_interpolate)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv)
{
uint8_t dst[12];
const int dst_stride = 6;
int i;
BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;
for (i = 2 ; i < width - 2; i+= 2) {
BAYER_TO_RGB24_INTERPOLATE
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
src += 2 * BAYER_SIZEOF;
dstY += 2;
dstU++;
dstV++;
}
if (width > 2) {
BAYER_TO_RGB24_COPY
rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv);
}
}
#undef S
#undef T
#undef R
#undef G
#undef B
#undef BAYER_TO_RGB24_COPY
#undef BAYER_TO_RGB24_INTERPOLATE
#undef BAYER_RENAME
#undef BAYER_R
#undef BAYER_G
#undef BAYER_B
#undef BAYER_READ
#undef BAYER_SIZEOF
#undef BAYER_SHIFT
#if defined(BAYER_BGGR)
#undef BAYER_BGGR
#endif
#if defined(BAYER_RGGB)
#undef BAYER_RGGB
#endif
#if defined(BAYER_GBRG)
#undef BAYER_GBRG
#endif
#if defined(BAYER_GRBG)
#undef BAYER_GRBG
#endif
#if defined(BAYER_8)
#undef BAYER_8
#endif
#if defined(BAYER_16LE)
#undef BAYER_16LE
#endif
#if defined(BAYER_16BE)
#undef BAYER_16BE
#endif