FFmpeg  4.3.8
vf_blend.c
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1 /*
2  * Copyright (c) 2013 Paul B Mahol
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 "libavutil/imgutils.h"
22 #include "libavutil/intfloat.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixfmt.h"
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "framesync.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "blend.h"
32 
33 #define TOP 0
34 #define BOTTOM 1
35 
36 typedef struct BlendContext {
37  const AVClass *class;
39  int hsub, vsub; ///< chroma subsampling values
40  int nb_planes;
41  char *all_expr;
43  double all_opacity;
44 
45  int depth;
47  int tblend;
48  AVFrame *prev_frame; /* only used with tblend */
49 } BlendContext;
50 
51 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
53 
54 typedef struct ThreadData {
55  const AVFrame *top, *bottom;
58  int plane;
59  int w, h;
61 } ThreadData;
62 
63 #define COMMON_OPTIONS \
64  { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
65  { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
66  { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
67  { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
68  { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
69  { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
70  { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
71  { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
72  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
73  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
74  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
75  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
76  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
77  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
78  { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
79  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
80  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
81  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
82  { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },\
83  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
84  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
85  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
86  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
87  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },\
88  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
89  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
90  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
91  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
92  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
93  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
94  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
95  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
96  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
97  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
98  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
99  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
100  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
101  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
102  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
103  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
104  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },\
105  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },\
106  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },\
107  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },\
108  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },\
109  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
110  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
111  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
112  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
113  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
114 
115 #define OFFSET(x) offsetof(BlendContext, x)
116 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
117 
118 static const AVOption blend_options[] = {
120  { NULL }
121 };
122 
124 
125 #define COPY(src, depth) \
126 static void blend_copy ## src##_##depth(const uint8_t *top, ptrdiff_t top_linesize, \
127  const uint8_t *bottom, ptrdiff_t bottom_linesize,\
128  uint8_t *dst, ptrdiff_t dst_linesize, \
129  ptrdiff_t width, ptrdiff_t height, \
130  FilterParams *param, double *values, int starty) \
131 { \
132  av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
133  width * depth / 8, height); \
134 }
135 
136 COPY(top, 8)
137 COPY(bottom, 8)
138 
139 COPY(top, 16)
140 COPY(bottom, 16)
141 
142 COPY(top, 32)
143 COPY(bottom, 32)
144 
145 #undef COPY
146 
147 static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
148  const uint8_t *bottom, ptrdiff_t bottom_linesize,
149  uint8_t *dst, ptrdiff_t dst_linesize,
150  ptrdiff_t width, ptrdiff_t height,
151  FilterParams *param, double *values, int starty)
152 {
153  const double opacity = param->opacity;
154  int i, j;
155 
156  for (i = 0; i < height; i++) {
157  for (j = 0; j < width; j++) {
158  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
159  }
160  dst += dst_linesize;
161  top += top_linesize;
162  bottom += bottom_linesize;
163  }
164 }
165 
166 static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
167  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
168  uint8_t *_dst, ptrdiff_t dst_linesize,
169  ptrdiff_t width, ptrdiff_t height,
170  FilterParams *param, double *values, int starty)
171 {
172  const uint16_t *top = (uint16_t*)_top;
173  const uint16_t *bottom = (uint16_t*)_bottom;
174  uint16_t *dst = (uint16_t*)_dst;
175  const double opacity = param->opacity;
176  int i, j;
177  dst_linesize /= 2;
178  top_linesize /= 2;
179  bottom_linesize /= 2;
180 
181  for (i = 0; i < height; i++) {
182  for (j = 0; j < width; j++) {
183  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
184  }
185  dst += dst_linesize;
186  top += top_linesize;
187  bottom += bottom_linesize;
188  }
189 }
190 
191 static void blend_normal_32bit(const uint8_t *_top, ptrdiff_t top_linesize,
192  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
193  uint8_t *_dst, ptrdiff_t dst_linesize,
194  ptrdiff_t width, ptrdiff_t height,
195  FilterParams *param, double *values, int starty)
196 {
197  const float *top = (float*)_top;
198  const float *bottom = (float*)_bottom;
199  float *dst = (float*)_dst;
200  const double opacity = param->opacity;
201  int i, j;
202  dst_linesize /= 4;
203  top_linesize /= 4;
204  bottom_linesize /= 4;
205 
206  for (i = 0; i < height; i++) {
207  for (j = 0; j < width; j++) {
208  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
209  }
210  dst += dst_linesize;
211  top += top_linesize;
212  bottom += bottom_linesize;
213  }
214 }
215 
216 #define DEFINE_BLEND8(name, expr) \
217 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
218  const uint8_t *bottom, ptrdiff_t bottom_linesize, \
219  uint8_t *dst, ptrdiff_t dst_linesize, \
220  ptrdiff_t width, ptrdiff_t height, \
221  FilterParams *param, double *values, int starty) \
222 { \
223  double opacity = param->opacity; \
224  int i, j; \
225  \
226  for (i = 0; i < height; i++) { \
227  for (j = 0; j < width; j++) { \
228  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
229  } \
230  dst += dst_linesize; \
231  top += top_linesize; \
232  bottom += bottom_linesize; \
233  } \
234 }
235 
236 #define DEFINE_BLEND16(name, expr, depth) \
237 static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
238  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
239  uint8_t *_dst, ptrdiff_t dst_linesize, \
240  ptrdiff_t width, ptrdiff_t height, \
241  FilterParams *param, double *values, int starty) \
242 { \
243  const uint16_t *top = (const uint16_t*)_top; \
244  const uint16_t *bottom = (const uint16_t*)_bottom; \
245  uint16_t *dst = (uint16_t*)_dst; \
246  double opacity = param->opacity; \
247  int i, j; \
248  dst_linesize /= 2; \
249  top_linesize /= 2; \
250  bottom_linesize /= 2; \
251  \
252  for (i = 0; i < height; i++) { \
253  for (j = 0; j < width; j++) { \
254  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
255  } \
256  dst += dst_linesize; \
257  top += top_linesize; \
258  bottom += bottom_linesize; \
259  } \
260 }
261 
262 #define DEFINE_BLEND32(name, expr, depth) \
263 static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
264  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
265  uint8_t *_dst, ptrdiff_t dst_linesize, \
266  ptrdiff_t width, ptrdiff_t height, \
267  FilterParams *param, double *values, int starty) \
268 { \
269  const float *top = (const float*)_top; \
270  const float *bottom = (const float*)_bottom; \
271  float *dst = (float*)_dst; \
272  double opacity = param->opacity; \
273  int i, j; \
274  dst_linesize /= 4; \
275  top_linesize /= 4; \
276  bottom_linesize /= 4; \
277  \
278  for (i = 0; i < height; i++) { \
279  for (j = 0; j < width; j++) { \
280  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
281  } \
282  dst += dst_linesize; \
283  top += top_linesize; \
284  bottom += bottom_linesize; \
285  } \
286 }
287 
288 #define A top[j]
289 #define B bottom[j]
290 
291 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
292 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
293 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
294 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
295 
296 DEFINE_BLEND8(addition, FFMIN(255, A + B))
297 DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
298 DEFINE_BLEND8(average, (A + B) / 2)
299 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
301 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
302 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
303 DEFINE_BLEND8(extremity, FFABS(255 - A - B))
304 DEFINE_BLEND8(difference, FFABS(A - B))
305 DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
306 DEFINE_BLEND8(screen, SCREEN(1, A, B))
307 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
308 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
309 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
310 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
311 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
312 DEFINE_BLEND8(darken, FFMIN(A, B))
313 DEFINE_BLEND8(lighten, FFMAX(A, B))
314 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
315 DEFINE_BLEND8(dodge, DODGE(A, B))
316 DEFINE_BLEND8(burn, BURN(A, B))
317 DEFINE_BLEND8(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - fabs(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - fabs(B - 127.5)/255))
318 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
319 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
320 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
321 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
322 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
323 DEFINE_BLEND8(and, A & B)
324 DEFINE_BLEND8(or, A | B)
325 DEFINE_BLEND8(xor, A ^ B)
326 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
327 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
328 
329 #undef MULTIPLY
330 #undef SCREEN
331 #undef BURN
332 #undef DODGE
333 
334 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
335 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
336 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
337 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
338 
339 DEFINE_BLEND16(addition, FFMIN(65535, A + B), 16)
340 DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768), 16)
341 DEFINE_BLEND16(average, (A + B) / 2, 16)
342 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 16)
343 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 16)
344 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768), 16)
345 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B), 16)
346 DEFINE_BLEND16(extremity, FFABS(65535 - A - B), 16)
347 DEFINE_BLEND16(difference, FFABS(A - B), 16)
348 DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B), 16)
349 DEFINE_BLEND16(screen, SCREEN(1, A, B), 16)
350 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 16)
351 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 16)
352 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535, 16)
353 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535), 16)
354 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535), 16)
355 DEFINE_BLEND16(darken, FFMIN(A, B), 16)
356 DEFINE_BLEND16(lighten, FFMAX(A, B), 16)
357 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B), 16)
358 DEFINE_BLEND16(dodge, DODGE(A, B), 16)
359 DEFINE_BLEND16(burn, BURN(A, B), 16)
360 DEFINE_BLEND16(softlight, (A > 32767) ? B + (65535 - B) * (A - 32767.5) / 32767.5 * (0.5 - fabs(B - 32767.5) / 65535): B - B * ((32767.5 - A) / 32767.5) * (0.5 - fabs(B - 32767.5)/65535), 16)
361 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535, 16)
362 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)), 16)
363 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535, 16)
364 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))), 16)
365 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))), 16)
366 DEFINE_BLEND16(and, A & B, 16)
367 DEFINE_BLEND16(or, A | B, 16)
368 DEFINE_BLEND16(xor, A ^ B, 16)
369 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B), 16)
370 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)), 16)
371 
372 #undef MULTIPLY
373 #undef SCREEN
374 #undef BURN
375 #undef DODGE
376 
377 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1023))
378 #define SCREEN(x, a, b) (1023 - (x) * ((1023 - (a)) * (1023 - (b)) / 1023))
379 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 1023 - ((1023 - (b)) << 10) / (a)))
380 #define DODGE(a, b) (((a) == 1023) ? (a) : FFMIN(1023, (((b) << 10) / (1023 - (a)))))
381 
382 DEFINE_BLEND16(addition, FFMIN(1023, A + B), 10)
383 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 512, 10), 10)
384 DEFINE_BLEND16(average, (A + B) / 2, 10)
385 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 10)
386 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 10)
387 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 512) * B / 128. + 512, 10), 10)
388 DEFINE_BLEND16(negation, 1023 - FFABS(1023 - A - B), 10)
389 DEFINE_BLEND16(extremity, FFABS(1023 - A - B), 10)
390 DEFINE_BLEND16(difference, FFABS(A - B), 10)
391 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(512 + A - B, 10), 10)
392 DEFINE_BLEND16(screen, SCREEN(1, A, B), 10)
393 DEFINE_BLEND16(overlay, (A < 512) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 10)
394 DEFINE_BLEND16(hardlight, (B < 512) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 10)
395 DEFINE_BLEND16(hardmix, (A < (1023 - B)) ? 0: 1023, 10)
396 DEFINE_BLEND16(heat, (A == 0) ? 0 : 1023 - FFMIN(((1023 - B) * (1023 - B)) / A, 1023), 10)
397 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 1023 - FFMIN(((1023 - A) * (1023 - A)) / B, 1023), 10)
398 DEFINE_BLEND16(darken, FFMIN(A, B), 10)
399 DEFINE_BLEND16(lighten, FFMAX(A, B), 10)
400 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 1023 : 1023 * A / B, 10), 10)
401 DEFINE_BLEND16(dodge, DODGE(A, B), 10)
402 DEFINE_BLEND16(burn, BURN(A, B), 10)
403 DEFINE_BLEND16(softlight, (A > 511) ? B + (1023 - B) * (A - 511.5) / 511.5 * (0.5 - fabs(B - 511.5) / 1023): B - B * ((511.5 - A) / 511.5) * (0.5 - fabs(B - 511.5)/1023), 10)
404 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 1023, 10)
405 DEFINE_BLEND16(pinlight, (B < 512) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 512)), 10)
406 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1023, 10)
407 DEFINE_BLEND16(reflect, (B == 1023) ? B : FFMIN(1023, (A * A / (1023 - B))), 10)
408 DEFINE_BLEND16(glow, (A == 1023) ? A : FFMIN(1023, (B * B / (1023 - A))), 10)
409 DEFINE_BLEND16(and, A & B, 10)
410 DEFINE_BLEND16(or, A | B, 10)
411 DEFINE_BLEND16(xor, A ^ B, 10)
412 DEFINE_BLEND16(vividlight, (A < 512) ? BURN(2 * A, B) : DODGE(2 * (A - 512), B), 10)
413 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 512) ? B + 2 * A - 1023 : B + 2 * (A - 512), 10), 10)
414 
415 #undef MULTIPLY
416 #undef SCREEN
417 #undef BURN
418 #undef DODGE
419 
420 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 4095))
421 #define SCREEN(x, a, b) (4095 - (x) * ((4095 - (a)) * (4095 - (b)) / 4095))
422 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 4095 - ((4095 - (b)) << 12) / (a)))
423 #define DODGE(a, b) (((a) == 4095) ? (a) : FFMIN(4095, (((b) << 12) / (4095 - (a)))))
424 
425 DEFINE_BLEND16(addition, FFMIN(4095, A + B), 12)
426 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 2048, 12), 12)
427 DEFINE_BLEND16(average, (A + B) / 2, 12)
428 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 12)
429 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 12)
430 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 2048) * B / 512. + 2048, 12), 12)
431 DEFINE_BLEND16(negation, 4095 - FFABS(4095 - A - B), 12)
432 DEFINE_BLEND16(extremity, FFABS(4095 - A - B), 12)
433 DEFINE_BLEND16(difference, FFABS(A - B), 12)
434 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(2048 + A - B, 12), 12)
435 DEFINE_BLEND16(screen, SCREEN(1, A, B), 12)
436 DEFINE_BLEND16(overlay, (A < 2048) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 12)
437 DEFINE_BLEND16(hardlight, (B < 2048) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 12)
438 DEFINE_BLEND16(hardmix, (A < (4095 - B)) ? 0: 4095, 12)
439 DEFINE_BLEND16(heat, (A == 0) ? 0 : 4095 - FFMIN(((4095 - B) * (4095 - B)) / A, 4095), 12)
440 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 4095 - FFMIN(((4095 - A) * (4095 - A)) / B, 4095), 12)
441 DEFINE_BLEND16(darken, FFMIN(A, B), 12)
442 DEFINE_BLEND16(lighten, FFMAX(A, B), 12)
443 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 4095 : 4095 * A / B, 12), 12)
444 DEFINE_BLEND16(dodge, DODGE(A, B), 12)
445 DEFINE_BLEND16(burn, BURN(A, B), 12)
446 DEFINE_BLEND16(softlight, (A > 2047) ? B + (4095 - B) * (A - 2047.5) / 2047.5 * (0.5 - fabs(B - 2047.5) / 4095): B - B * ((2047.5 - A) / 2047.5) * (0.5 - fabs(B - 2047.5)/4095), 12)
447 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 4095, 12)
448 DEFINE_BLEND16(pinlight, (B < 2048) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 2048)), 12)
449 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 4095, 12)
450 DEFINE_BLEND16(reflect, (B == 4095) ? B : FFMIN(4095, (A * A / (4095 - B))), 12)
451 DEFINE_BLEND16(glow, (A == 4095) ? A : FFMIN(4095, (B * B / (4095 - A))), 12)
452 DEFINE_BLEND16(and, A & B, 12)
453 DEFINE_BLEND16(or, A | B, 12)
454 DEFINE_BLEND16(xor, A ^ B, 12)
455 DEFINE_BLEND16(vividlight, (A < 2048) ? BURN(2 * A, B) : DODGE(2 * (A - 2048), B), 12)
456 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 2048) ? B + 2 * A - 4095 : B + 2 * (A - 2048), 12), 12)
457 
458 #undef MULTIPLY
459 #undef SCREEN
460 #undef BURN
461 #undef DODGE
462 
463 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 511))
464 #define SCREEN(x, a, b) (511 - (x) * ((511 - (a)) * (511 - (b)) / 511))
465 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 511 - ((511 - (b)) << 9) / (a)))
466 #define DODGE(a, b) (((a) == 511) ? (a) : FFMIN(511, (((b) << 9) / (511 - (a)))))
467 
468 DEFINE_BLEND16(addition, FFMIN(511, A + B), 9)
469 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 256, 9), 9)
470 DEFINE_BLEND16(average, (A + B) / 2, 9)
471 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 9)
472 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 9)
473 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 256) * B / 64. + 256, 9), 9)
474 DEFINE_BLEND16(negation, 511 - FFABS(511 - A - B), 9)
475 DEFINE_BLEND16(extremity, FFABS(511 - A - B), 9)
476 DEFINE_BLEND16(difference, FFABS(A - B), 9)
477 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(256 + A - B, 9), 9)
478 DEFINE_BLEND16(screen, SCREEN(1, A, B), 9)
479 DEFINE_BLEND16(overlay, (A < 256) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 9)
480 DEFINE_BLEND16(hardlight, (B < 256) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 9)
481 DEFINE_BLEND16(hardmix, (A < (511 - B)) ? 0: 511, 9)
482 DEFINE_BLEND16(heat, (A == 0) ? 0 : 511 - FFMIN(((511 - B) * (511 - B)) / A, 511), 9)
483 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 511 - FFMIN(((511 - A) * (511 - A)) / B, 511), 9)
484 DEFINE_BLEND16(darken, FFMIN(A, B), 9)
485 DEFINE_BLEND16(lighten, FFMAX(A, B), 9)
486 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 511 : 511 * A / B, 9), 9)
487 DEFINE_BLEND16(dodge, DODGE(A, B), 9)
488 DEFINE_BLEND16(burn, BURN(A, B), 9)
489 DEFINE_BLEND16(softlight, (A > 511) ? B + (511 - B) * (A - 511.5) / 511.5 * (0.5 - fabs(B - 511.5) / 511): B - B * ((511.5 - A) / 511.5) * (0.5 - fabs(B - 511.5)/511), 9)
490 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 511, 9)
491 DEFINE_BLEND16(pinlight, (B < 256) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 256)), 9)
492 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 511, 9)
493 DEFINE_BLEND16(reflect, (B == 511) ? B : FFMIN(511, (A * A / (511 - B))), 9)
494 DEFINE_BLEND16(glow, (A == 511) ? A : FFMIN(511, (B * B / (511 - A))), 9)
495 DEFINE_BLEND16(and, A & B, 9)
496 DEFINE_BLEND16(or, A | B, 9)
497 DEFINE_BLEND16(xor, A ^ B, 9)
498 DEFINE_BLEND16(vividlight, (A < 256) ? BURN(2 * A, B) : DODGE(2 * (A - 256), B), 9)
499 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 256) ? B + 2 * A - 511 : B + 2 * (A - 256), 9), 9)
500 
501 #undef MULTIPLY
502 #undef SCREEN
503 #undef BURN
504 #undef DODGE
505 
506 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1.0))
507 #define SCREEN(x, a, b) (1.0 - (x) * ((1.0 - (a)) * (1.0 - (b)) / 1.0))
508 #define BURN(a, b) (((a) <= 0.0) ? (a) : FFMAX(0.0, 1.0 - (1.0 - (b)) / (a)))
509 #define DODGE(a, b) (((a) >= 1.0) ? (a) : FFMIN(1.0, ((b) / (1.0 - (a)))))
510 
511 DEFINE_BLEND32(addition, A + B, 32)
512 DEFINE_BLEND32(grainmerge, A + B - 0.5, 32)
513 DEFINE_BLEND32(average, (A + B) / 2, 32)
514 DEFINE_BLEND32(subtract, A - B, 32)
515 DEFINE_BLEND32(multiply, A * B, 32)
516 DEFINE_BLEND32(multiply128, (A - 0.5) * B / 0.125 + 0.5, 32)
517 DEFINE_BLEND32(negation, 1.0 - FFABS(1.0 - A - B), 32)
518 DEFINE_BLEND32(extremity, FFABS(1.0 - A - B), 32)
519 DEFINE_BLEND32(difference, FFABS(A - B), 32)
520 DEFINE_BLEND32(grainextract, 0.5 + A - B, 32)
521 DEFINE_BLEND32(screen, SCREEN(1, A, B), 32)
522 DEFINE_BLEND32(overlay, (A < 0.5) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 32)
523 DEFINE_BLEND32(hardlight, (B < 0.5) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 32)
524 DEFINE_BLEND32(hardmix, (A < (1.0 - B)) ? 0: 1.0, 32)
525 DEFINE_BLEND32(heat, (A == 0) ? 0 : 1.0 - FFMIN(((1.0 - B) * (1.0 - B)) / A, 1.0), 32)
526 DEFINE_BLEND32(freeze, (B == 0) ? 0 : 1.0 - FFMIN(((1.0 - A) * (1.0 - A)) / B, 1.0), 32)
527 DEFINE_BLEND32(darken, FFMIN(A, B), 32)
528 DEFINE_BLEND32(lighten, FFMAX(A, B), 32)
529 DEFINE_BLEND32(divide, B == 0 ? 1.0 : 1.0 * A / B, 32)
530 DEFINE_BLEND32(dodge, DODGE(A, B), 32)
531 DEFINE_BLEND32(burn, BURN(A, B), 32)
532 DEFINE_BLEND32(softlight, (A > 0.5) ? B + (1.0 - B) * (A - 0.5) / 0.5 * (0.5 - fabs(B - 0.5) / 1.0): B - B * ((0.5 - A) / 0.5) * (0.5 - fabs(B - 0.5)/1.0), 32)
533 DEFINE_BLEND32(exclusion, A + B - 2 * A * B / 1.0, 32)
534 DEFINE_BLEND32(pinlight, (B < 0.5) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 0.5)), 32)
535 DEFINE_BLEND32(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1.0, 32)
536 DEFINE_BLEND32(reflect, (B == 1.0) ? B : FFMIN(1.0, (A * A / (1.0 - B))), 32)
537 DEFINE_BLEND32(glow, (A == 1.0) ? A : FFMIN(1.0, (B * B / (1.0 - A))), 32)
541 DEFINE_BLEND32(vividlight, (A < 0.5) ? BURN(2 * A, B) : DODGE(2 * (A - 0.5), B), 32)
542 DEFINE_BLEND32(linearlight,(B < 0.5) ? B + 2 * A - 1.0 : B + 2 * (A - 0.5), 32)
543 
544 #define DEFINE_BLEND_EXPR(type, name, div) \
545 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
546  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
547  uint8_t *_dst, ptrdiff_t dst_linesize, \
548  ptrdiff_t width, ptrdiff_t height, \
549  FilterParams *param, double *values, int starty) \
550 { \
551  const type *top = (type*)_top; \
552  const type *bottom = (type*)_bottom; \
553  type *dst = (type*)_dst; \
554  AVExpr *e = param->e; \
555  int y, x; \
556  dst_linesize /= div; \
557  top_linesize /= div; \
558  bottom_linesize /= div; \
559  \
560  for (y = 0; y < height; y++) { \
561  values[VAR_Y] = y + starty; \
562  for (x = 0; x < width; x++) { \
563  values[VAR_X] = x; \
564  values[VAR_TOP] = values[VAR_A] = top[x]; \
565  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
566  dst[x] = av_expr_eval(e, values, NULL); \
567  } \
568  dst += dst_linesize; \
569  top += top_linesize; \
570  bottom += bottom_linesize; \
571  } \
572 }
573 
575 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
576 DEFINE_BLEND_EXPR(float, 32bit, 4)
577 
578 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
579 {
580  ThreadData *td = arg;
581  int slice_start = (td->h * jobnr ) / nb_jobs;
582  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
583  int height = slice_end - slice_start;
584  const uint8_t *top = td->top->data[td->plane];
585  const uint8_t *bottom = td->bottom->data[td->plane];
586  uint8_t *dst = td->dst->data[td->plane];
587  double values[VAR_VARS_NB];
588 
589  values[VAR_N] = td->inlink->frame_count_out;
590  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
591  values[VAR_W] = td->w;
592  values[VAR_H] = td->h;
593  values[VAR_SW] = td->w / (double)td->dst->width;
594  values[VAR_SH] = td->h / (double)td->dst->height;
595 
596  td->param->blend(top + slice_start * td->top->linesize[td->plane],
597  td->top->linesize[td->plane],
598  bottom + slice_start * td->bottom->linesize[td->plane],
599  td->bottom->linesize[td->plane],
600  dst + slice_start * td->dst->linesize[td->plane],
601  td->dst->linesize[td->plane],
602  td->w, height, td->param, &values[0], slice_start);
603  return 0;
604 }
605 
607  const AVFrame *bottom_buf)
608 {
609  BlendContext *s = ctx->priv;
610  AVFilterLink *inlink = ctx->inputs[0];
611  AVFilterLink *outlink = ctx->outputs[0];
612  AVFrame *dst_buf;
613  int plane;
614 
615  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
616  if (!dst_buf)
617  return top_buf;
618  av_frame_copy_props(dst_buf, top_buf);
619 
620  for (plane = 0; plane < s->nb_planes; plane++) {
621  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
622  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
623  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
624  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
625  FilterParams *param = &s->params[plane];
626  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
627  .w = outw, .h = outh, .param = param, .plane = plane,
628  .inlink = inlink };
629 
630  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
631  }
632 
633  if (!s->tblend)
634  av_frame_free(&top_buf);
635 
636  return dst_buf;
637 }
638 
640 {
641  AVFilterContext *ctx = fs->parent;
642  AVFrame *top_buf, *bottom_buf, *dst_buf;
643  int ret;
644 
645  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
646  if (ret < 0)
647  return ret;
648  if (!bottom_buf)
649  return ff_filter_frame(ctx->outputs[0], top_buf);
650  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
651  return ff_filter_frame(ctx->outputs[0], dst_buf);
652 }
653 
655 {
656  BlendContext *s = ctx->priv;
657 
658  s->tblend = !strcmp(ctx->filter->name, "tblend");
659 
661  return 0;
662 }
663 
665 {
666  static const enum AVPixelFormat pix_fmts[] = {
684  };
685 
686  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
687  if (!fmts_list)
688  return AVERROR(ENOMEM);
689  return ff_set_common_formats(ctx, fmts_list);
690 }
691 
693 {
694  BlendContext *s = ctx->priv;
695  int i;
696 
697  ff_framesync_uninit(&s->fs);
699 
700  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
701  av_expr_free(s->params[i].e);
702 }
703 
704 #define DEFINE_INIT_BLEND_FUNC(depth, nbits) \
705 static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param) \
706 { \
707  switch (param->mode) { \
708  case BLEND_ADDITION: param->blend = blend_addition_##depth##bit; break; \
709  case BLEND_GRAINMERGE: param->blend = blend_grainmerge_##depth##bit; break; \
710  case BLEND_AND: param->blend = blend_and_##depth##bit; break; \
711  case BLEND_AVERAGE: param->blend = blend_average_##depth##bit; break; \
712  case BLEND_BURN: param->blend = blend_burn_##depth##bit; break; \
713  case BLEND_DARKEN: param->blend = blend_darken_##depth##bit; break; \
714  case BLEND_DIFFERENCE: param->blend = blend_difference_##depth##bit; break; \
715  case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_##depth##bit; break; \
716  case BLEND_DIVIDE: param->blend = blend_divide_##depth##bit; break; \
717  case BLEND_DODGE: param->blend = blend_dodge_##depth##bit; break; \
718  case BLEND_EXCLUSION: param->blend = blend_exclusion_##depth##bit; break; \
719  case BLEND_EXTREMITY: param->blend = blend_extremity_##depth##bit; break; \
720  case BLEND_FREEZE: param->blend = blend_freeze_##depth##bit; break; \
721  case BLEND_GLOW: param->blend = blend_glow_##depth##bit; break; \
722  case BLEND_HARDLIGHT: param->blend = blend_hardlight_##depth##bit; break; \
723  case BLEND_HARDMIX: param->blend = blend_hardmix_##depth##bit; break; \
724  case BLEND_HEAT: param->blend = blend_heat_##depth##bit; break; \
725  case BLEND_LIGHTEN: param->blend = blend_lighten_##depth##bit; break; \
726  case BLEND_LINEARLIGHT: param->blend = blend_linearlight_##depth##bit; break; \
727  case BLEND_MULTIPLY: param->blend = blend_multiply_##depth##bit; break; \
728  case BLEND_MULTIPLY128: param->blend = blend_multiply128_##depth##bit; break; \
729  case BLEND_NEGATION: param->blend = blend_negation_##depth##bit; break; \
730  case BLEND_NORMAL: param->blend = blend_normal_##nbits##bit; break; \
731  case BLEND_OR: param->blend = blend_or_##depth##bit; break; \
732  case BLEND_OVERLAY: param->blend = blend_overlay_##depth##bit; break; \
733  case BLEND_PHOENIX: param->blend = blend_phoenix_##depth##bit; break; \
734  case BLEND_PINLIGHT: param->blend = blend_pinlight_##depth##bit; break; \
735  case BLEND_REFLECT: param->blend = blend_reflect_##depth##bit; break; \
736  case BLEND_SCREEN: param->blend = blend_screen_##depth##bit; break; \
737  case BLEND_SOFTLIGHT: param->blend = blend_softlight_##depth##bit; break; \
738  case BLEND_SUBTRACT: param->blend = blend_subtract_##depth##bit; break; \
739  case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_##depth##bit; break; \
740  case BLEND_XOR: param->blend = blend_xor_##depth##bit; break; \
741  } \
742 }
749 
751 {
752  switch (depth) {
753  case 8:
754  init_blend_func_8_8bit(param);
755  break;
756  case 9:
757  init_blend_func_9_16bit(param);
758  break;
759  case 10:
760  init_blend_func_10_16bit(param);
761  break;
762  case 12:
763  init_blend_func_12_16bit(param);
764  break;
765  case 16:
766  init_blend_func_16_16bit(param);
767  break;
768  case 32:
769  init_blend_func_32_32bit(param);
770  break;
771  }
772 
773  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
774  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
775  } else if (param->mode == BLEND_NORMAL) {
776  if (param->opacity == 1)
777  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
778  else if (param->opacity == 0)
779  param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
780  }
781 
782  if (ARCH_X86)
783  ff_blend_init_x86(param, depth);
784 }
785 
786 static int config_output(AVFilterLink *outlink)
787 {
788  AVFilterContext *ctx = outlink->src;
789  AVFilterLink *toplink = ctx->inputs[TOP];
790  BlendContext *s = ctx->priv;
791  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
792  int ret, plane;
793 
794  if (!s->tblend) {
795  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
796 
797  if (toplink->format != bottomlink->format) {
798  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
799  return AVERROR(EINVAL);
800  }
801  if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
802  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
803  "(size %dx%d) do not match the corresponding "
804  "second input link %s parameters (size %dx%d)\n",
805  ctx->input_pads[TOP].name, toplink->w, toplink->h,
806  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
807  return AVERROR(EINVAL);
808  }
809  }
810 
811  outlink->w = toplink->w;
812  outlink->h = toplink->h;
813  outlink->time_base = toplink->time_base;
814  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
815  outlink->frame_rate = toplink->frame_rate;
816 
817  s->hsub = pix_desc->log2_chroma_w;
818  s->vsub = pix_desc->log2_chroma_h;
819 
820  s->depth = pix_desc->comp[0].depth;
822 
823  if (!s->tblend)
824  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
825  return ret;
826 
827  for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
828  FilterParams *param = &s->params[plane];
829 
830  if (s->all_mode >= 0)
831  param->mode = s->all_mode;
832  if (s->all_opacity < 1)
833  param->opacity = s->all_opacity;
834 
835  ff_blend_init(param, s->depth);
836 
837  if (s->all_expr && !param->expr_str) {
838  param->expr_str = av_strdup(s->all_expr);
839  if (!param->expr_str)
840  return AVERROR(ENOMEM);
841  }
842  if (param->expr_str) {
843  ret = av_expr_parse(&param->e, param->expr_str, var_names,
844  NULL, NULL, NULL, NULL, 0, ctx);
845  if (ret < 0)
846  return ret;
847  param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
848  }
849  }
850 
851  if (s->tblend)
852  return 0;
853 
854  ret = ff_framesync_configure(&s->fs);
855  outlink->time_base = s->fs.time_base;
856 
857  return ret;
858 }
859 
860 #if CONFIG_BLEND_FILTER
861 
862 static int activate(AVFilterContext *ctx)
863 {
864  BlendContext *s = ctx->priv;
865  return ff_framesync_activate(&s->fs);
866 }
867 
868 static const AVFilterPad blend_inputs[] = {
869  {
870  .name = "top",
871  .type = AVMEDIA_TYPE_VIDEO,
872  },{
873  .name = "bottom",
874  .type = AVMEDIA_TYPE_VIDEO,
875  },
876  { NULL }
877 };
878 
879 static const AVFilterPad blend_outputs[] = {
880  {
881  .name = "default",
882  .type = AVMEDIA_TYPE_VIDEO,
883  .config_props = config_output,
884  },
885  { NULL }
886 };
887 
889  .name = "blend",
890  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
891  .preinit = blend_framesync_preinit,
892  .init = init,
893  .uninit = uninit,
894  .priv_size = sizeof(BlendContext),
896  .activate = activate,
897  .inputs = blend_inputs,
898  .outputs = blend_outputs,
899  .priv_class = &blend_class,
901 };
902 
903 #endif
904 
905 #if CONFIG_TBLEND_FILTER
906 
907 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
908 {
909  AVFilterContext *ctx = inlink->dst;
910  BlendContext *s = ctx->priv;
911  AVFilterLink *outlink = ctx->outputs[0];
912 
913  if (s->prev_frame) {
914  AVFrame *out;
915 
916  if (ctx->is_disabled)
917  out = av_frame_clone(frame);
918  else
919  out = blend_frame(ctx, frame, s->prev_frame);
921  s->prev_frame = frame;
922  return ff_filter_frame(outlink, out);
923  }
924  s->prev_frame = frame;
925  return 0;
926 }
927 
928 static const AVOption tblend_options[] = {
930  { NULL }
931 };
932 
934 
935 static const AVFilterPad tblend_inputs[] = {
936  {
937  .name = "default",
938  .type = AVMEDIA_TYPE_VIDEO,
939  .filter_frame = tblend_filter_frame,
940  },
941  { NULL }
942 };
943 
944 static const AVFilterPad tblend_outputs[] = {
945  {
946  .name = "default",
947  .type = AVMEDIA_TYPE_VIDEO,
948  .config_props = config_output,
949  },
950  { NULL }
951 };
952 
954  .name = "tblend",
955  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
956  .priv_size = sizeof(BlendContext),
957  .priv_class = &tblend_class,
959  .init = init,
960  .uninit = uninit,
961  .inputs = tblend_inputs,
962  .outputs = tblend_outputs,
964 };
965 
966 #endif
AVExpr * e
Definition: blend.h:68
#define TOP
Definition: vf_blend.c:33
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:440
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:432
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
double opacity
Definition: blend.h:67
AVOption.
Definition: opt.h:246
void(* blend)(const uint8_t *top, ptrdiff_t top_linesize, const uint8_t *bottom, ptrdiff_t bottom_linesize, uint8_t *dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, struct FilterParams *param, double *values, int starty)
Definition: blend.h:70
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:434
void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend.c:750
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:417
enum BlendMode all_mode
Definition: vf_blend.c:42
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:435
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize, const uint8_t *_bottom, ptrdiff_t bottom_linesize, uint8_t *_dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, FilterParams *param, double *values, int starty)
Definition: vf_blend.c:166
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2589
Main libavfilter public API header.
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
#define BOTTOM
Definition: vf_blend.c:34
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:413
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:401
static const char *const var_names[]
Definition: vf_blend.c:51
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:685
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
#define DEFINE_INIT_BLEND_FUNC(depth, nbits)
Definition: vf_blend.c:704
int tblend
Definition: vf_blend.c:47
Definition: vf_blend.c:52
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:300
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:378
const char * name
Pad name.
Definition: internal.h:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:379
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1075
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
char * expr_str
Definition: blend.h:69
#define av_cold
Definition: attributes.h:88
AVOptions.
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:351
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:216
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:369
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:393
const AVFrame * bottom
Definition: vf_blend.c:55
AVFilter ff_vf_blend
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:431
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:412
static AVFrame * frame
#define height
enum BlendMode mode
Definition: blend.h:66
AVFrame * dst
Definition: vf_blend.c:56
int plane
Definition: vf_blend.c:58
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
static int query_formats(AVFilterContext *ctx)
Definition: vf_blend.c:664
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:410
FilterParams params[4]
Definition: vf_blend.c:46
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:402
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:439
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:786
#define av_log(a,...)
AVFrame * prev_frame
Definition: vf_blend.c:48
Definition: vf_blend.c:52
A filter pad used for either input or output.
Definition: internal.h:54
#define COPY(src, depth)
Definition: vf_blend.c:125
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
int width
Definition: frame.h:358
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:605
#define td
Definition: regdef.h:70
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:654
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:692
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:283
Frame sync structure.
Definition: framesync.h:146
#define ARCH_X86
Definition: config.h:38
Definition: vf_blend.c:52
#define AVERROR(e)
Definition: error.h:43
#define DEFINE_BLEND16(name, expr, depth)
Definition: vf_blend.c:236
#define SCREEN(x, a, b)
Definition: vf_blend.c:292
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
static SoftFloat_IEEE754 multiply(SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
multiply two softfloats and handle the rounding off
Definition: alsdec.c:1387
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:441
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:418
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:334
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:400
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define B
Definition: vf_blend.c:289
#define FFMAX(a, b)
Definition: common.h:94
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:419
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:395
#define A
Definition: vf_blend.c:288
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:416
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:784
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:381
#define NAN
Definition: mathematics.h:64
#define FFMIN(a, b)
Definition: common.h:96
#define DEFINE_BLEND_EXPR(type, name, div)
#define DODGE(a, b)
Definition: vf_blend.c:294
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:438
#define width
Definition: vf_blend.c:52
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
static int activate(AVFilterContext *ctx)
Definition: af_adeclick.c:622
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define s(width, name)
Definition: cbs_vp9.c:257
Definition: vf_blend.c:52
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:436
AVFilter ff_vf_tblend
Definition: vf_blend.c:52
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:396
FilterParams * param
Definition: vf_blend.c:60
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:541
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define FF_ARRAY_ELEMS(a)
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:408
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:429
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize, const uint8_t *bottom, ptrdiff_t bottom_linesize, uint8_t *dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, FilterParams *param, double *values, int starty)
Definition: vf_blend.c:147
Used for passing data between threads.
Definition: dsddec.c:67
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define BURN(a, b)
Definition: vf_blend.c:293
#define COMMON_OPTIONS
Definition: vf_blend.c:63
filter data
Definition: mlp.h:74
FFFrameSync fs
Definition: vf_blend.c:38
static const AVOption blend_options[]
Definition: vf_blend.c:118
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:397
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
void ff_blend_init_x86(FilterParams *param, int depth)
Definition: vf_blend.c:52
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:394
#define DEFINE_BLEND32(name, expr, depth)
Definition: vf_blend.c:262
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:414
#define flags(name, subs,...)
Definition: cbs_av1.c:576
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:404
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:291
int nb_planes
Definition: vf_blend.c:40
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:426
char * all_expr
Definition: vf_blend.c:41
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
int vsub
chroma subsampling values
Definition: vf_blend.c:39
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:427
BlendMode
Definition: blend.h:27
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define bit(string, value)
Definition: cbs_mpeg2.c:58
double all_opacity
Definition: vf_blend.c:43
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:433
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
avfilter_execute_func * execute
Definition: internal.h:144
const AVFrame * top
Definition: vf_blend.c:55
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2040
pixel format definitions
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:314
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:606
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
static int blend_frame_for_dualinput(FFFrameSync *fs)
Definition: vf_blend.c:639
An instance of a filter.
Definition: avfilter.h:338
int height
Definition: frame.h:358
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
static void blend_normal_32bit(const uint8_t *_top, ptrdiff_t top_linesize, const uint8_t *_bottom, ptrdiff_t bottom_linesize, uint8_t *_dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, FilterParams *param, double *values, int starty)
Definition: vf_blend.c:191
AVFilterLink * inlink
Definition: vf_blend.c:57
internal API functions
Definition: vf_blend.c:52
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:341
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:409
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:437
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58