FFmpeg
vf_colorspace.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <string.h>
22 #include "checkasm.h"
23 #include "libavfilter/colorspacedsp.h"
24 #include "libavutil/common.h"
25 #include "libavutil/internal.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mem_internal.h"
28 
29 #define W 64
30 #define H 64
31 
32 #define randomize_buffers() \
33  do { \
34  unsigned mask = bpp_mask[idepth]; \
35  int n, m; \
36  int bpp = 1 + (!!idepth); \
37  int buf_size = W * H * bpp; \
38  for (m = 0; m < 3; m++) { \
39  int ss = m ? ss_w + ss_h : 0; \
40  int plane_sz = buf_size >> ss; \
41  for (n = 0; n < plane_sz; n += 4) { \
42  unsigned r = rnd() & mask; \
43  AV_WN32A(&src[m][n], r); \
44  } \
45  } \
46  } while (0)
47 
48 static const char *format_string[] = {
49  "444", "422", "420"
50 };
51 
52 static const unsigned bpp_mask[] = { 0xffffffff, 0x03ff03ff, 0x0fff0fff };
53 
54 static void check_yuv2yuv(void)
55 {
56  declare_func(void, uint8_t *dst[3], ptrdiff_t dst_stride[3],
57  uint8_t *src[3], ptrdiff_t src_stride[3],
58  int w, int h, const int16_t coeff[3][3][8],
59  const int16_t off[2][8]);
60  ColorSpaceDSPContext dsp;
61  int idepth, odepth, fmt, n;
62  LOCAL_ALIGNED_32(uint8_t, src_y, [W * H * 2]);
63  LOCAL_ALIGNED_32(uint8_t, src_u, [W * H * 2]);
64  LOCAL_ALIGNED_32(uint8_t, src_v, [W * H * 2]);
65  uint8_t *src[3] = { src_y, src_u, src_v };
66  LOCAL_ALIGNED_32(uint8_t, dst0_y, [W * H * 2]);
67  LOCAL_ALIGNED_32(uint8_t, dst0_u, [W * H * 2]);
68  LOCAL_ALIGNED_32(uint8_t, dst0_v, [W * H * 2]);
69  LOCAL_ALIGNED_32(uint8_t, dst1_y, [W * H * 2]);
70  LOCAL_ALIGNED_32(uint8_t, dst1_u, [W * H * 2]);
71  LOCAL_ALIGNED_32(uint8_t, dst1_v, [W * H * 2]);
72  uint8_t *dst0[3] = { dst0_y, dst0_u, dst0_v }, *dst1[3] = { dst1_y, dst1_u, dst1_v };
73  LOCAL_ALIGNED_32(int16_t, offset_buf, [16]);
74  LOCAL_ALIGNED_32(int16_t, coeff_buf, [3 * 3 * 8]);
75  int16_t (*offset)[8] = (int16_t(*)[8]) offset_buf;
76  int16_t (*coeff)[3][8] = (int16_t(*)[3][8]) coeff_buf;
77 
78  ff_colorspacedsp_init(&dsp);
79  for (n = 0; n < 8; n++) {
80  offset[0][n] = offset[1][n] = 16;
81 
82  coeff[0][0][n] = (1 << 14) + (1 << 7) + 1;
83  coeff[0][1][n] = (1 << 7) - 1;
84  coeff[0][2][n] = -(1 << 8);
85  coeff[1][0][n] = coeff[2][0][n] = 0;
86  coeff[1][1][n] = (1 << 14) + (1 << 7);
87  coeff[1][2][n] = -(1 << 7);
88  coeff[2][2][n] = (1 << 14) - (1 << 6);
89  coeff[2][1][n] = 1 << 6;
90  }
91  for (idepth = 0; idepth < 3; idepth++) {
92  for (odepth = 0; odepth < 3; odepth++) {
93  for (fmt = 0; fmt < 3; fmt++) {
94  if (check_func(dsp.yuv2yuv[idepth][odepth][fmt],
95  "ff_colorspacedsp_yuv2yuv_%sp%dto%d",
96  format_string[fmt],
97  idepth * 2 + 8, odepth * 2 + 8)) {
98  int ss_w = !!fmt, ss_h = fmt == 2;
99  int y_src_stride = W << !!idepth, y_dst_stride = W << !!odepth;
100  int uv_src_stride = y_src_stride >> ss_w, uv_dst_stride = y_dst_stride >> ss_w;
101 
102  randomize_buffers();
103  call_ref(dst0, (ptrdiff_t[3]) { y_dst_stride, uv_dst_stride, uv_dst_stride },
104  src, (ptrdiff_t[3]) { y_src_stride, uv_src_stride, uv_src_stride },
105  W, H, coeff, offset);
106  call_new(dst1, (ptrdiff_t[3]) { y_dst_stride, uv_dst_stride, uv_dst_stride },
107  src, (ptrdiff_t[3]) { y_src_stride, uv_src_stride, uv_src_stride },
108  W, H, coeff, offset);
109  if (memcmp(dst0[0], dst1[0], y_dst_stride * H) ||
110  memcmp(dst0[1], dst1[1], uv_dst_stride * H >> ss_h) ||
111  memcmp(dst0[2], dst1[2], uv_dst_stride * H >> ss_h)) {
112  fail();
113  }
114  }
115  }
116  }
117  }
118 
119  report("yuv2yuv");
120 }
121 
122 static void check_yuv2rgb(void)
123 {
124  declare_func(void, int16_t *dst[3], ptrdiff_t dst_stride,
125  uint8_t *src[3], ptrdiff_t src_stride[3],
126  int w, int h, const int16_t coeff[3][3][8],
127  const int16_t off[8]);
128  ColorSpaceDSPContext dsp;
129  int idepth, fmt, n;
130  LOCAL_ALIGNED_32(uint8_t, src_y, [W * H * 2]);
131  LOCAL_ALIGNED_32(uint8_t, src_u, [W * H * 2]);
132  LOCAL_ALIGNED_32(uint8_t, src_v, [W * H * 2]);
133  uint8_t *src[3] = { src_y, src_u, src_v };
134  LOCAL_ALIGNED_32(int16_t, dst0_y, [W * H]);
135  LOCAL_ALIGNED_32(int16_t, dst0_u, [W * H]);
136  LOCAL_ALIGNED_32(int16_t, dst0_v, [W * H]);
137  LOCAL_ALIGNED_32(int16_t, dst1_y, [W * H]);
138  LOCAL_ALIGNED_32(int16_t, dst1_u, [W * H]);
139  LOCAL_ALIGNED_32(int16_t, dst1_v, [W * H]);
140  int16_t *dst0[3] = { dst0_y, dst0_u, dst0_v }, *dst1[3] = { dst1_y, dst1_u, dst1_v };
141  LOCAL_ALIGNED_32(int16_t, offset, [8]);
142  LOCAL_ALIGNED_32(int16_t, coeff_buf, [3 * 3 * 8]);
143  int16_t (*coeff)[3][8] = (int16_t(*)[3][8]) coeff_buf;
144 
145  ff_colorspacedsp_init(&dsp);
146  for (n = 0; n < 8; n++) {
147  offset[n] = 16;
148 
149  coeff[0][0][n] = coeff[1][0][n] = coeff[2][0][n] = (1 << 14) | 1;
150  coeff[0][1][n] = coeff[2][2][n] = 0;
151  coeff[0][2][n] = 1 << 13;
152  coeff[1][1][n] = -(1 << 12);
153  coeff[1][2][n] = 1 << 12;
154  coeff[2][1][n] = 1 << 11;
155  }
156  for (idepth = 0; idepth < 3; idepth++) {
157  for (fmt = 0; fmt < 3; fmt++) {
158  if (check_func(dsp.yuv2rgb[idepth][fmt],
159  "ff_colorspacedsp_yuv2rgb_%sp%d",
160  format_string[fmt], idepth * 2 + 8)) {
161  int ss_w = !!fmt, ss_h = fmt == 2;
162  int y_src_stride = W << !!idepth;
163  int uv_src_stride = y_src_stride >> ss_w;
164 
165  randomize_buffers();
166  call_ref(dst0, W, src,
167  (ptrdiff_t[3]) { y_src_stride, uv_src_stride, uv_src_stride },
168  W, H, coeff, offset);
169  call_new(dst1, W, src,
170  (ptrdiff_t[3]) { y_src_stride, uv_src_stride, uv_src_stride },
171  W, H, coeff, offset);
172  if (memcmp(dst0[0], dst1[0], W * H * sizeof(int16_t)) ||
173  memcmp(dst0[1], dst1[1], W * H * sizeof(int16_t)) ||
174  memcmp(dst0[2], dst1[2], W * H * sizeof(int16_t))) {
175  fail();
176  }
177  }
178  }
179  }
180 
181  report("yuv2rgb");
182 }
183 
184 #undef randomize_buffers
185 #define randomize_buffers() \
186  do { \
187  int y, x, p; \
188  for (p = 0; p < 3; p++) { \
189  for (y = 0; y < H; y++) { \
190  for (x = 0; x < W; x++) { \
191  int r = rnd() & 0x7fff; \
192  r -= (32768 - 28672) >> 1; \
193  src[p][y * W + x] = r; \
194  } \
195  } \
196  } \
197  } while (0)
198 
199 static void check_rgb2yuv(void)
200 {
201  declare_func(void, uint8_t *dst[3], ptrdiff_t dst_stride[3],
202  int16_t *src[3], ptrdiff_t src_stride,
203  int w, int h, const int16_t coeff[3][3][8],
204  const int16_t off[8]);
205  ColorSpaceDSPContext dsp;
206  int odepth, fmt, n;
207  LOCAL_ALIGNED_32(int16_t, src_y, [W * H * 2]);
208  LOCAL_ALIGNED_32(int16_t, src_u, [W * H * 2]);
209  LOCAL_ALIGNED_32(int16_t, src_v, [W * H * 2]);
210  int16_t *src[3] = { src_y, src_u, src_v };
211  LOCAL_ALIGNED_32(uint8_t, dst0_y, [W * H * 2]);
212  LOCAL_ALIGNED_32(uint8_t, dst0_u, [W * H * 2]);
213  LOCAL_ALIGNED_32(uint8_t, dst0_v, [W * H * 2]);
214  LOCAL_ALIGNED_32(uint8_t, dst1_y, [W * H * 2]);
215  LOCAL_ALIGNED_32(uint8_t, dst1_u, [W * H * 2]);
216  LOCAL_ALIGNED_32(uint8_t, dst1_v, [W * H * 2]);
217  uint8_t *dst0[3] = { dst0_y, dst0_u, dst0_v }, *dst1[3] = { dst1_y, dst1_u, dst1_v };
218  LOCAL_ALIGNED_32(int16_t, offset, [8]);
219  LOCAL_ALIGNED_32(int16_t, coeff_buf, [3 * 3 * 8]);
220  int16_t (*coeff)[3][8] = (int16_t(*)[3][8]) coeff_buf;
221 
222  ff_colorspacedsp_init(&dsp);
223  for (n = 0; n < 8; n++) {
224  offset[n] = 16;
225 
226  // these somewhat resemble bt601/smpte170m coefficients
227  coeff[0][0][n] = lrint(0.3 * (1 << 14));
228  coeff[0][1][n] = lrint(0.6 * (1 << 14));
229  coeff[0][2][n] = lrint(0.1 * (1 << 14));
230  coeff[1][0][n] = lrint(-0.15 * (1 << 14));
231  coeff[1][1][n] = lrint(-0.35 * (1 << 14));
232  coeff[1][2][n] = lrint(0.5 * (1 << 14));
233  coeff[2][0][n] = lrint(0.5 * (1 << 14));
234  coeff[2][1][n] = lrint(-0.42 * (1 << 14));
235  coeff[2][2][n] = lrint(-0.08 * (1 << 14));
236  }
237  for (odepth = 0; odepth < 3; odepth++) {
238  for (fmt = 0; fmt < 3; fmt++) {
239  if (check_func(dsp.rgb2yuv[odepth][fmt],
240  "ff_colorspacedsp_rgb2yuv_%sp%d",
241  format_string[fmt], odepth * 2 + 8)) {
242  int ss_w = !!fmt, ss_h = fmt == 2;
243  int y_dst_stride = W << !!odepth;
244  int uv_dst_stride = y_dst_stride >> ss_w;
245 
246  randomize_buffers();
247  call_ref(dst0, (ptrdiff_t[3]) { y_dst_stride, uv_dst_stride, uv_dst_stride },
248  src, W, W, H, coeff, offset);
249  call_new(dst1, (ptrdiff_t[3]) { y_dst_stride, uv_dst_stride, uv_dst_stride },
250  src, W, W, H, coeff, offset);
251  if (memcmp(dst0[0], dst1[0], H * y_dst_stride) ||
252  memcmp(dst0[1], dst1[1], H * uv_dst_stride >> ss_h) ||
253  memcmp(dst0[2], dst1[2], H * uv_dst_stride >> ss_h)) {
254  fail();
255  }
256  }
257  }
258  }
259 
260  report("rgb2yuv");
261 }
262 
263 static void check_multiply3x3(void)
264 {
265  declare_func(void, int16_t *data[3], ptrdiff_t stride,
266  int w, int h, const int16_t coeff[3][3][8]);
267  ColorSpaceDSPContext dsp;
268  LOCAL_ALIGNED_32(int16_t, dst0_y, [W * H]);
269  LOCAL_ALIGNED_32(int16_t, dst0_u, [W * H]);
270  LOCAL_ALIGNED_32(int16_t, dst0_v, [W * H]);
271  LOCAL_ALIGNED_32(int16_t, dst1_y, [W * H]);
272  LOCAL_ALIGNED_32(int16_t, dst1_u, [W * H]);
273  LOCAL_ALIGNED_32(int16_t, dst1_v, [W * H]);
274  int16_t *dst0[3] = { dst0_y, dst0_u, dst0_v }, *dst1[3] = { dst1_y, dst1_u, dst1_v };
275  int16_t **src = dst0;
276  LOCAL_ALIGNED_32(int16_t, coeff_buf, [3 * 3 * 8]);
277  int16_t (*coeff)[3][8] = (int16_t(*)[3][8]) coeff_buf;
278  int n;
279 
280  ff_colorspacedsp_init(&dsp);
281  for (n = 0; n < 8; n++) {
282  coeff[0][0][n] = lrint(0.85 * (1 << 14));
283  coeff[0][1][n] = lrint(0.10 * (1 << 14));
284  coeff[0][2][n] = lrint(0.05 * (1 << 14));
285  coeff[1][0][n] = lrint(-0.1 * (1 << 14));
286  coeff[1][1][n] = lrint(0.95 * (1 << 14));
287  coeff[1][2][n] = lrint(0.15 * (1 << 14));
288  coeff[2][0][n] = lrint(-0.2 * (1 << 14));
289  coeff[2][1][n] = lrint(0.30 * (1 << 14));
290  coeff[2][2][n] = lrint(0.90 * (1 << 14));
291  }
292  if (check_func(dsp.multiply3x3, "ff_colorspacedsp_multiply3x3")) {
293  randomize_buffers();
294  memcpy(dst1_y, dst0_y, W * H * sizeof(*dst1_y));
295  memcpy(dst1_u, dst0_u, W * H * sizeof(*dst1_u));
296  memcpy(dst1_v, dst0_v, W * H * sizeof(*dst1_v));
297  call_ref(dst0, W, W, H, coeff);
298  call_new(dst1, W, W, H, coeff);
299  if (memcmp(dst0[0], dst1[0], H * W * sizeof(*dst0_y)) ||
300  memcmp(dst0[1], dst1[1], H * W * sizeof(*dst0_u)) ||
301  memcmp(dst0[2], dst1[2], H * W * sizeof(*dst0_v))) {
302  fail();
303  }
304  }
305 
306  report("multiply3x3");
307 }
308 
309 void checkasm_check_colorspace(void)
310 {
311  check_yuv2yuv();
312  check_yuv2rgb();
313  check_rgb2yuv();
314  check_multiply3x3();
315 }
ColorSpaceDSPContext::yuv2yuv
yuv2yuv_fn yuv2yuv[NB_BPP][NB_BPP][NB_SS]
Definition: colorspacedsp.h:70
mem_internal.h
W
#define W
Definition: vf_colorspace.c:29
w
uint8_t w
Definition: llviddspenc.c:38
checkasm_check_colorspace
void checkasm_check_colorspace(void)
Definition: vf_colorspace.c:309
check_func
#define check_func(func,...)
Definition: checkasm.h:121
data
const char data[16]
Definition: mxf.c:143
call_ref
#define call_ref(...)
Definition: checkasm.h:136
check_multiply3x3
static void check_multiply3x3(void)
Definition: vf_colorspace.c:263
H
#define H
Definition: vf_colorspace.c:30
fail
#define fail()
Definition: checkasm.h:130
checkasm.h
lrint
#define lrint
Definition: tablegen.h:53
ColorSpaceDSPContext::yuv2rgb
yuv2rgb_fn yuv2rgb[NB_BPP][NB_SS]
Definition: colorspacedsp.h:62
intreadwrite.h
ColorSpaceDSPContext
Definition: colorspacedsp.h:59
randomize_buffers
#define randomize_buffers()
Definition: vf_colorspace.c:185
call_new
#define call_new(...)
Definition: checkasm.h:208
LOCAL_ALIGNED_32
#define LOCAL_ALIGNED_32(t, v,...)
Definition: mem_internal.h:136
format_string
Definition: dashenc.c:216
check_yuv2yuv
static void check_yuv2yuv(void)
Definition: vf_colorspace.c:54
ColorSpaceDSPContext::multiply3x3
void(* multiply3x3)(int16_t *data[3], ptrdiff_t stride, int w, int h, const int16_t m[3][3][8])
Definition: colorspacedsp.h:74
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
check_yuv2rgb
static void check_yuv2rgb(void)
Definition: vf_colorspace.c:122
bpp_mask
static const unsigned bpp_mask[]
Definition: vf_colorspace.c:52
report
#define report
Definition: checkasm.h:133
internal.h
common.h
stride
#define stride
Definition: h264pred_template.c:537
check_rgb2yuv
static void check_rgb2yuv(void)
Definition: vf_colorspace.c:199
ColorSpaceDSPContext::rgb2yuv
rgb2yuv_fn rgb2yuv[NB_BPP][NB_SS]
Definition: colorspacedsp.h:65
colorspacedsp.h
declare_func
#define declare_func(ret,...)
Definition: checkasm.h:125
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:78
h
h
Definition: vp9dsp_template.c:2038
ff_colorspacedsp_init
void ff_colorspacedsp_init(ColorSpaceDSPContext *dsp)
Definition: colorspacedsp.c:102
Generated on Wed May 18 2022 19:21:51 for FFmpeg by   doxygen 1.8.17