FFmpeg  4.4.5
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;
42  enum BlendMode all_mode;
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 OFFSET(x) offsetof(BlendContext, x)
64 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
65 
66 static const AVOption blend_options[] = {
67  { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
68  { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
69  { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
70  { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
71  { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode" },
72  { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },
73  { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
74  { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
75  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },
76  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },
77  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },
78  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },
79  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },
80  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
81  { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
82  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },
83  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },
84  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },
85  { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },
86  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },
87  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },
88  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },
89  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },
90  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },
91  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },
92  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },
93  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },
94  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },
95  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },
96  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },
97  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },
98  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },
99  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },
100  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },
101  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },
102  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },
103  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },
104  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },
105  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },
106  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },
107  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
108  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
109  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
110  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
111  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
112  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
113  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
114  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
115  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
116  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
117  { NULL }
118 };
119 
121 
122 #define COPY(src, depth) \
123 static void blend_copy ## src##_##depth(const uint8_t *top, ptrdiff_t top_linesize, \
124  const uint8_t *bottom, ptrdiff_t bottom_linesize,\
125  uint8_t *dst, ptrdiff_t dst_linesize, \
126  ptrdiff_t width, ptrdiff_t height, \
127  FilterParams *param, double *values, int starty) \
128 { \
129  av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
130  width * depth / 8, height); \
131 }
132 
133 COPY(top, 8)
134 COPY(bottom, 8)
135 
136 COPY(top, 16)
137 COPY(bottom, 16)
138 
139 COPY(top, 32)
140 COPY(bottom, 32)
141 
142 #undef COPY
143 
144 static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
145  const uint8_t *bottom, ptrdiff_t bottom_linesize,
146  uint8_t *dst, ptrdiff_t dst_linesize,
147  ptrdiff_t width, ptrdiff_t height,
148  FilterParams *param, double *values, int starty)
149 {
150  const double opacity = param->opacity;
151  int i, j;
152 
153  for (i = 0; i < height; i++) {
154  for (j = 0; j < width; j++) {
155  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
156  }
157  dst += dst_linesize;
158  top += top_linesize;
159  bottom += bottom_linesize;
160  }
161 }
162 
163 static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
164  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
165  uint8_t *_dst, ptrdiff_t dst_linesize,
166  ptrdiff_t width, ptrdiff_t height,
167  FilterParams *param, double *values, int starty)
168 {
169  const uint16_t *top = (uint16_t*)_top;
170  const uint16_t *bottom = (uint16_t*)_bottom;
171  uint16_t *dst = (uint16_t*)_dst;
172  const double opacity = param->opacity;
173  int i, j;
174  dst_linesize /= 2;
175  top_linesize /= 2;
176  bottom_linesize /= 2;
177 
178  for (i = 0; i < height; i++) {
179  for (j = 0; j < width; j++) {
180  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
181  }
182  dst += dst_linesize;
183  top += top_linesize;
184  bottom += bottom_linesize;
185  }
186 }
187 
188 static void blend_normal_32bit(const uint8_t *_top, ptrdiff_t top_linesize,
189  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
190  uint8_t *_dst, ptrdiff_t dst_linesize,
191  ptrdiff_t width, ptrdiff_t height,
192  FilterParams *param, double *values, int starty)
193 {
194  const float *top = (float*)_top;
195  const float *bottom = (float*)_bottom;
196  float *dst = (float*)_dst;
197  const double opacity = param->opacity;
198  int i, j;
199  dst_linesize /= 4;
200  top_linesize /= 4;
201  bottom_linesize /= 4;
202 
203  for (i = 0; i < height; i++) {
204  for (j = 0; j < width; j++) {
205  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
206  }
207  dst += dst_linesize;
208  top += top_linesize;
209  bottom += bottom_linesize;
210  }
211 }
212 
213 #define DEFINE_BLEND8(name, expr) \
214 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
215  const uint8_t *bottom, ptrdiff_t bottom_linesize, \
216  uint8_t *dst, ptrdiff_t dst_linesize, \
217  ptrdiff_t width, ptrdiff_t height, \
218  FilterParams *param, double *values, int starty) \
219 { \
220  double opacity = param->opacity; \
221  int i, j; \
222  \
223  for (i = 0; i < height; i++) { \
224  for (j = 0; j < width; j++) { \
225  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
226  } \
227  dst += dst_linesize; \
228  top += top_linesize; \
229  bottom += bottom_linesize; \
230  } \
231 }
232 
233 #define DEFINE_BLEND16(name, expr, depth) \
234 static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
235  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
236  uint8_t *_dst, ptrdiff_t dst_linesize, \
237  ptrdiff_t width, ptrdiff_t height, \
238  FilterParams *param, double *values, int starty) \
239 { \
240  const uint16_t *top = (const uint16_t*)_top; \
241  const uint16_t *bottom = (const uint16_t*)_bottom; \
242  uint16_t *dst = (uint16_t*)_dst; \
243  double opacity = param->opacity; \
244  int i, j; \
245  dst_linesize /= 2; \
246  top_linesize /= 2; \
247  bottom_linesize /= 2; \
248  \
249  for (i = 0; i < height; i++) { \
250  for (j = 0; j < width; j++) { \
251  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
252  } \
253  dst += dst_linesize; \
254  top += top_linesize; \
255  bottom += bottom_linesize; \
256  } \
257 }
258 
259 #define DEFINE_BLEND32(name, expr, depth) \
260 static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
261  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
262  uint8_t *_dst, ptrdiff_t dst_linesize, \
263  ptrdiff_t width, ptrdiff_t height, \
264  FilterParams *param, double *values, int starty) \
265 { \
266  const float *top = (const float*)_top; \
267  const float *bottom = (const float*)_bottom; \
268  float *dst = (float*)_dst; \
269  double opacity = param->opacity; \
270  int i, j; \
271  dst_linesize /= 4; \
272  top_linesize /= 4; \
273  bottom_linesize /= 4; \
274  \
275  for (i = 0; i < height; i++) { \
276  for (j = 0; j < width; j++) { \
277  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
278  } \
279  dst += dst_linesize; \
280  top += top_linesize; \
281  bottom += bottom_linesize; \
282  } \
283 }
284 
285 #define A top[j]
286 #define B bottom[j]
287 
288 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
289 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
290 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
291 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
292 
293 DEFINE_BLEND8(addition, FFMIN(255, A + B))
294 DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
295 DEFINE_BLEND8(average, (A + B) / 2)
296 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
298 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
299 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
300 DEFINE_BLEND8(extremity, FFABS(255 - A - B))
301 DEFINE_BLEND8(difference, FFABS(A - B))
302 DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
303 DEFINE_BLEND8(screen, SCREEN(1, A, B))
304 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
305 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
306 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
307 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
308 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
309 DEFINE_BLEND8(darken, FFMIN(A, B))
310 DEFINE_BLEND8(lighten, FFMAX(A, B))
311 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
312 DEFINE_BLEND8(dodge, DODGE(A, B))
313 DEFINE_BLEND8(burn, BURN(A, B))
314 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))
315 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
316 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
317 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
318 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
319 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
320 DEFINE_BLEND8(and, A & B)
321 DEFINE_BLEND8(or, A | B)
322 DEFINE_BLEND8(xor, A ^ B)
323 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
324 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
325 
326 #undef MULTIPLY
327 #undef SCREEN
328 #undef BURN
329 #undef DODGE
330 
331 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
332 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
333 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
334 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
335 
336 DEFINE_BLEND16(addition, FFMIN(65535, A + B), 16)
337 DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768), 16)
338 DEFINE_BLEND16(average, (A + B) / 2, 16)
339 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 16)
341 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768), 16)
342 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B), 16)
343 DEFINE_BLEND16(extremity, FFABS(65535 - A - B), 16)
344 DEFINE_BLEND16(difference, FFABS(A - B), 16)
345 DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B), 16)
346 DEFINE_BLEND16(screen, SCREEN(1, A, B), 16)
347 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 16)
348 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 16)
349 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535, 16)
350 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535), 16)
351 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535), 16)
352 DEFINE_BLEND16(darken, FFMIN(A, B), 16)
353 DEFINE_BLEND16(lighten, FFMAX(A, B), 16)
354 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B), 16)
355 DEFINE_BLEND16(dodge, DODGE(A, B), 16)
356 DEFINE_BLEND16(burn, BURN(A, B), 16)
357 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)
358 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535, 16)
359 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)), 16)
360 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535, 16)
361 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))), 16)
362 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))), 16)
363 DEFINE_BLEND16(and, A & B, 16)
364 DEFINE_BLEND16(or, A | B, 16)
365 DEFINE_BLEND16(xor, A ^ B, 16)
366 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B), 16)
367 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)), 16)
368 
369 #undef MULTIPLY
370 #undef SCREEN
371 #undef BURN
372 #undef DODGE
373 
374 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1023))
375 #define SCREEN(x, a, b) (1023 - (x) * ((1023 - (a)) * (1023 - (b)) / 1023))
376 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 1023 - ((1023 - (b)) << 10) / (a)))
377 #define DODGE(a, b) (((a) == 1023) ? (a) : FFMIN(1023, (((b) << 10) / (1023 - (a)))))
378 
379 DEFINE_BLEND16(addition, FFMIN(1023, A + B), 10)
380 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 512, 10), 10)
381 DEFINE_BLEND16(average, (A + B) / 2, 10)
382 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 10)
384 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 512) * B / 128. + 512, 10), 10)
385 DEFINE_BLEND16(negation, 1023 - FFABS(1023 - A - B), 10)
386 DEFINE_BLEND16(extremity, FFABS(1023 - A - B), 10)
387 DEFINE_BLEND16(difference, FFABS(A - B), 10)
388 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(512 + A - B, 10), 10)
389 DEFINE_BLEND16(screen, SCREEN(1, A, B), 10)
390 DEFINE_BLEND16(overlay, (A < 512) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 10)
391 DEFINE_BLEND16(hardlight, (B < 512) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 10)
392 DEFINE_BLEND16(hardmix, (A < (1023 - B)) ? 0: 1023, 10)
393 DEFINE_BLEND16(heat, (A == 0) ? 0 : 1023 - FFMIN(((1023 - B) * (1023 - B)) / A, 1023), 10)
394 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 1023 - FFMIN(((1023 - A) * (1023 - A)) / B, 1023), 10)
395 DEFINE_BLEND16(darken, FFMIN(A, B), 10)
396 DEFINE_BLEND16(lighten, FFMAX(A, B), 10)
397 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 1023 : 1023 * A / B, 10), 10)
398 DEFINE_BLEND16(dodge, DODGE(A, B), 10)
399 DEFINE_BLEND16(burn, BURN(A, B), 10)
400 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)
401 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 1023, 10)
402 DEFINE_BLEND16(pinlight, (B < 512) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 512)), 10)
403 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1023, 10)
404 DEFINE_BLEND16(reflect, (B == 1023) ? B : FFMIN(1023, (A * A / (1023 - B))), 10)
405 DEFINE_BLEND16(glow, (A == 1023) ? A : FFMIN(1023, (B * B / (1023 - A))), 10)
406 DEFINE_BLEND16(and, A & B, 10)
407 DEFINE_BLEND16(or, A | B, 10)
408 DEFINE_BLEND16(xor, A ^ B, 10)
409 DEFINE_BLEND16(vividlight, (A < 512) ? BURN(2 * A, B) : DODGE(2 * (A - 512), B), 10)
410 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 512) ? B + 2 * A - 1023 : B + 2 * (A - 512), 10), 10)
411 
412 #undef MULTIPLY
413 #undef SCREEN
414 #undef BURN
415 #undef DODGE
416 
417 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 4095))
418 #define SCREEN(x, a, b) (4095 - (x) * ((4095 - (a)) * (4095 - (b)) / 4095))
419 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 4095 - ((4095 - (b)) << 12) / (a)))
420 #define DODGE(a, b) (((a) == 4095) ? (a) : FFMIN(4095, (((b) << 12) / (4095 - (a)))))
421 
422 DEFINE_BLEND16(addition, FFMIN(4095, A + B), 12)
423 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 2048, 12), 12)
424 DEFINE_BLEND16(average, (A + B) / 2, 12)
425 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 12)
427 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 2048) * B / 512. + 2048, 12), 12)
428 DEFINE_BLEND16(negation, 4095 - FFABS(4095 - A - B), 12)
429 DEFINE_BLEND16(extremity, FFABS(4095 - A - B), 12)
430 DEFINE_BLEND16(difference, FFABS(A - B), 12)
431 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(2048 + A - B, 12), 12)
432 DEFINE_BLEND16(screen, SCREEN(1, A, B), 12)
433 DEFINE_BLEND16(overlay, (A < 2048) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 12)
434 DEFINE_BLEND16(hardlight, (B < 2048) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 12)
435 DEFINE_BLEND16(hardmix, (A < (4095 - B)) ? 0: 4095, 12)
436 DEFINE_BLEND16(heat, (A == 0) ? 0 : 4095 - FFMIN(((4095 - B) * (4095 - B)) / A, 4095), 12)
437 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 4095 - FFMIN(((4095 - A) * (4095 - A)) / B, 4095), 12)
438 DEFINE_BLEND16(darken, FFMIN(A, B), 12)
439 DEFINE_BLEND16(lighten, FFMAX(A, B), 12)
440 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 4095 : 4095 * A / B, 12), 12)
441 DEFINE_BLEND16(dodge, DODGE(A, B), 12)
442 DEFINE_BLEND16(burn, BURN(A, B), 12)
443 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)
444 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 4095, 12)
445 DEFINE_BLEND16(pinlight, (B < 2048) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 2048)), 12)
446 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 4095, 12)
447 DEFINE_BLEND16(reflect, (B == 4095) ? B : FFMIN(4095, (A * A / (4095 - B))), 12)
448 DEFINE_BLEND16(glow, (A == 4095) ? A : FFMIN(4095, (B * B / (4095 - A))), 12)
449 DEFINE_BLEND16(and, A & B, 12)
450 DEFINE_BLEND16(or, A | B, 12)
451 DEFINE_BLEND16(xor, A ^ B, 12)
452 DEFINE_BLEND16(vividlight, (A < 2048) ? BURN(2 * A, B) : DODGE(2 * (A - 2048), B), 12)
453 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 2048) ? B + 2 * A - 4095 : B + 2 * (A - 2048), 12), 12)
454 
455 #undef MULTIPLY
456 #undef SCREEN
457 #undef BURN
458 #undef DODGE
459 
460 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 511))
461 #define SCREEN(x, a, b) (511 - (x) * ((511 - (a)) * (511 - (b)) / 511))
462 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 511 - ((511 - (b)) << 9) / (a)))
463 #define DODGE(a, b) (((a) == 511) ? (a) : FFMIN(511, (((b) << 9) / (511 - (a)))))
464 
465 DEFINE_BLEND16(addition, FFMIN(511, A + B), 9)
466 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 256, 9), 9)
467 DEFINE_BLEND16(average, (A + B) / 2, 9)
468 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 9)
470 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 256) * B / 64. + 256, 9), 9)
471 DEFINE_BLEND16(negation, 511 - FFABS(511 - A - B), 9)
472 DEFINE_BLEND16(extremity, FFABS(511 - A - B), 9)
473 DEFINE_BLEND16(difference, FFABS(A - B), 9)
474 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(256 + A - B, 9), 9)
475 DEFINE_BLEND16(screen, SCREEN(1, A, B), 9)
476 DEFINE_BLEND16(overlay, (A < 256) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 9)
477 DEFINE_BLEND16(hardlight, (B < 256) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 9)
478 DEFINE_BLEND16(hardmix, (A < (511 - B)) ? 0: 511, 9)
479 DEFINE_BLEND16(heat, (A == 0) ? 0 : 511 - FFMIN(((511 - B) * (511 - B)) / A, 511), 9)
480 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 511 - FFMIN(((511 - A) * (511 - A)) / B, 511), 9)
481 DEFINE_BLEND16(darken, FFMIN(A, B), 9)
482 DEFINE_BLEND16(lighten, FFMAX(A, B), 9)
483 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 511 : 511 * A / B, 9), 9)
484 DEFINE_BLEND16(dodge, DODGE(A, B), 9)
485 DEFINE_BLEND16(burn, BURN(A, B), 9)
486 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)
487 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 511, 9)
488 DEFINE_BLEND16(pinlight, (B < 256) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 256)), 9)
489 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 511, 9)
490 DEFINE_BLEND16(reflect, (B == 511) ? B : FFMIN(511, (A * A / (511 - B))), 9)
491 DEFINE_BLEND16(glow, (A == 511) ? A : FFMIN(511, (B * B / (511 - A))), 9)
492 DEFINE_BLEND16(and, A & B, 9)
493 DEFINE_BLEND16(or, A | B, 9)
494 DEFINE_BLEND16(xor, A ^ B, 9)
495 DEFINE_BLEND16(vividlight, (A < 256) ? BURN(2 * A, B) : DODGE(2 * (A - 256), B), 9)
496 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 256) ? B + 2 * A - 511 : B + 2 * (A - 256), 9), 9)
497 
498 #undef MULTIPLY
499 #undef SCREEN
500 #undef BURN
501 #undef DODGE
502 
503 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1.0))
504 #define SCREEN(x, a, b) (1.0 - (x) * ((1.0 - (a)) * (1.0 - (b)) / 1.0))
505 #define BURN(a, b) (((a) <= 0.0) ? (a) : FFMAX(0.0, 1.0 - (1.0 - (b)) / (a)))
506 #define DODGE(a, b) (((a) >= 1.0) ? (a) : FFMIN(1.0, ((b) / (1.0 - (a)))))
507 
508 DEFINE_BLEND32(addition, A + B, 32)
509 DEFINE_BLEND32(grainmerge, A + B - 0.5, 32)
510 DEFINE_BLEND32(average, (A + B) / 2, 32)
511 DEFINE_BLEND32(subtract, A - B, 32)
512 DEFINE_BLEND32(multiply, A * B, 32)
513 DEFINE_BLEND32(multiply128, (A - 0.5) * B / 0.125 + 0.5, 32)
514 DEFINE_BLEND32(negation, 1.0 - FFABS(1.0 - A - B), 32)
515 DEFINE_BLEND32(extremity, FFABS(1.0 - A - B), 32)
516 DEFINE_BLEND32(difference, FFABS(A - B), 32)
517 DEFINE_BLEND32(grainextract, 0.5 + A - B, 32)
518 DEFINE_BLEND32(screen, SCREEN(1, A, B), 32)
519 DEFINE_BLEND32(overlay, (A < 0.5) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 32)
520 DEFINE_BLEND32(hardlight, (B < 0.5) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 32)
521 DEFINE_BLEND32(hardmix, (A < (1.0 - B)) ? 0: 1.0, 32)
522 DEFINE_BLEND32(heat, (A == 0) ? 0 : 1.0 - FFMIN(((1.0 - B) * (1.0 - B)) / A, 1.0), 32)
523 DEFINE_BLEND32(freeze, (B == 0) ? 0 : 1.0 - FFMIN(((1.0 - A) * (1.0 - A)) / B, 1.0), 32)
524 DEFINE_BLEND32(darken, FFMIN(A, B), 32)
525 DEFINE_BLEND32(lighten, FFMAX(A, B), 32)
526 DEFINE_BLEND32(divide, B == 0 ? 1.0 : 1.0 * A / B, 32)
527 DEFINE_BLEND32(dodge, DODGE(A, B), 32)
528 DEFINE_BLEND32(burn, BURN(A, B), 32)
529 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)
530 DEFINE_BLEND32(exclusion, A + B - 2 * A * B / 1.0, 32)
531 DEFINE_BLEND32(pinlight, (B < 0.5) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 0.5)), 32)
532 DEFINE_BLEND32(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1.0, 32)
533 DEFINE_BLEND32(reflect, (B == 1.0) ? B : FFMIN(1.0, (A * A / (1.0 - B))), 32)
534 DEFINE_BLEND32(glow, (A == 1.0) ? A : FFMIN(1.0, (B * B / (1.0 - A))), 32)
538 DEFINE_BLEND32(vividlight, (A < 0.5) ? BURN(2 * A, B) : DODGE(2 * (A - 0.5), B), 32)
539 DEFINE_BLEND32(linearlight,(B < 0.5) ? B + 2 * A - 1.0 : B + 2 * (A - 0.5), 32)
540 
541 #define DEFINE_BLEND_EXPR(type, name, div) \
542 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
543  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
544  uint8_t *_dst, ptrdiff_t dst_linesize, \
545  ptrdiff_t width, ptrdiff_t height, \
546  FilterParams *param, double *values, int starty) \
547 { \
548  const type *top = (type*)_top; \
549  const type *bottom = (type*)_bottom; \
550  type *dst = (type*)_dst; \
551  AVExpr *e = param->e; \
552  int y, x; \
553  dst_linesize /= div; \
554  top_linesize /= div; \
555  bottom_linesize /= div; \
556  \
557  for (y = 0; y < height; y++) { \
558  values[VAR_Y] = y + starty; \
559  for (x = 0; x < width; x++) { \
560  values[VAR_X] = x; \
561  values[VAR_TOP] = values[VAR_A] = top[x]; \
562  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
563  dst[x] = av_expr_eval(e, values, NULL); \
564  } \
565  dst += dst_linesize; \
566  top += top_linesize; \
567  bottom += bottom_linesize; \
568  } \
569 }
570 
572 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
573 DEFINE_BLEND_EXPR(float, 32bit, 4)
574 
575 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
576 {
577  ThreadData *td = arg;
578  int slice_start = (td->h * jobnr ) / nb_jobs;
579  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
580  int height = slice_end - slice_start;
581  const uint8_t *top = td->top->data[td->plane];
582  const uint8_t *bottom = td->bottom->data[td->plane];
583  uint8_t *dst = td->dst->data[td->plane];
584  double values[VAR_VARS_NB];
585 
586  values[VAR_N] = td->inlink->frame_count_out;
587  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
588  values[VAR_W] = td->w;
589  values[VAR_H] = td->h;
590  values[VAR_SW] = td->w / (double)td->dst->width;
591  values[VAR_SH] = td->h / (double)td->dst->height;
592 
593  td->param->blend(top + slice_start * td->top->linesize[td->plane],
594  td->top->linesize[td->plane],
595  bottom + slice_start * td->bottom->linesize[td->plane],
596  td->bottom->linesize[td->plane],
597  dst + slice_start * td->dst->linesize[td->plane],
598  td->dst->linesize[td->plane],
599  td->w, height, td->param, &values[0], slice_start);
600  return 0;
601 }
602 
604  const AVFrame *bottom_buf)
605 {
606  BlendContext *s = ctx->priv;
607  AVFilterLink *inlink = ctx->inputs[0];
608  AVFilterLink *outlink = ctx->outputs[0];
609  AVFrame *dst_buf;
610  int plane;
611 
612  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
613  if (!dst_buf)
614  return top_buf;
615  av_frame_copy_props(dst_buf, top_buf);
616 
617  for (plane = 0; plane < s->nb_planes; plane++) {
618  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
619  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
620  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
621  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
622  FilterParams *param = &s->params[plane];
623  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
624  .w = outw, .h = outh, .param = param, .plane = plane,
625  .inlink = inlink };
626 
628  }
629 
630  if (!s->tblend)
631  av_frame_free(&top_buf);
632 
633  return dst_buf;
634 }
635 
637 {
638  AVFilterContext *ctx = fs->parent;
639  AVFrame *top_buf, *bottom_buf, *dst_buf;
640  int ret;
641 
642  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
643  if (ret < 0)
644  return ret;
645  if (!bottom_buf)
646  return ff_filter_frame(ctx->outputs[0], top_buf);
647  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
648  return ff_filter_frame(ctx->outputs[0], dst_buf);
649 }
650 
652 {
653  BlendContext *s = ctx->priv;
654 
655  s->tblend = !strcmp(ctx->filter->name, "tblend");
656 
657  s->fs.on_event = blend_frame_for_dualinput;
658  return 0;
659 }
660 
662 {
663  static const enum AVPixelFormat pix_fmts[] = {
681  };
682 
684  if (!fmts_list)
685  return AVERROR(ENOMEM);
686  return ff_set_common_formats(ctx, fmts_list);
687 }
688 
690 {
691  BlendContext *s = ctx->priv;
692  int i;
693 
694  ff_framesync_uninit(&s->fs);
695  av_frame_free(&s->prev_frame);
696 
697  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
698  av_expr_free(s->params[i].e);
699 }
700 
701 #define DEFINE_INIT_BLEND_FUNC(depth, nbits) \
702 static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param) \
703 { \
704  switch (param->mode) { \
705  case BLEND_ADDITION: param->blend = blend_addition_##depth##bit; break; \
706  case BLEND_GRAINMERGE: param->blend = blend_grainmerge_##depth##bit; break; \
707  case BLEND_AND: param->blend = blend_and_##depth##bit; break; \
708  case BLEND_AVERAGE: param->blend = blend_average_##depth##bit; break; \
709  case BLEND_BURN: param->blend = blend_burn_##depth##bit; break; \
710  case BLEND_DARKEN: param->blend = blend_darken_##depth##bit; break; \
711  case BLEND_DIFFERENCE: param->blend = blend_difference_##depth##bit; break; \
712  case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_##depth##bit; break; \
713  case BLEND_DIVIDE: param->blend = blend_divide_##depth##bit; break; \
714  case BLEND_DODGE: param->blend = blend_dodge_##depth##bit; break; \
715  case BLEND_EXCLUSION: param->blend = blend_exclusion_##depth##bit; break; \
716  case BLEND_EXTREMITY: param->blend = blend_extremity_##depth##bit; break; \
717  case BLEND_FREEZE: param->blend = blend_freeze_##depth##bit; break; \
718  case BLEND_GLOW: param->blend = blend_glow_##depth##bit; break; \
719  case BLEND_HARDLIGHT: param->blend = blend_hardlight_##depth##bit; break; \
720  case BLEND_HARDMIX: param->blend = blend_hardmix_##depth##bit; break; \
721  case BLEND_HEAT: param->blend = blend_heat_##depth##bit; break; \
722  case BLEND_LIGHTEN: param->blend = blend_lighten_##depth##bit; break; \
723  case BLEND_LINEARLIGHT: param->blend = blend_linearlight_##depth##bit; break; \
724  case BLEND_MULTIPLY: param->blend = blend_multiply_##depth##bit; break; \
725  case BLEND_MULTIPLY128: param->blend = blend_multiply128_##depth##bit; break; \
726  case BLEND_NEGATION: param->blend = blend_negation_##depth##bit; break; \
727  case BLEND_NORMAL: param->blend = blend_normal_##nbits##bit; break; \
728  case BLEND_OR: param->blend = blend_or_##depth##bit; break; \
729  case BLEND_OVERLAY: param->blend = blend_overlay_##depth##bit; break; \
730  case BLEND_PHOENIX: param->blend = blend_phoenix_##depth##bit; break; \
731  case BLEND_PINLIGHT: param->blend = blend_pinlight_##depth##bit; break; \
732  case BLEND_REFLECT: param->blend = blend_reflect_##depth##bit; break; \
733  case BLEND_SCREEN: param->blend = blend_screen_##depth##bit; break; \
734  case BLEND_SOFTLIGHT: param->blend = blend_softlight_##depth##bit; break; \
735  case BLEND_SUBTRACT: param->blend = blend_subtract_##depth##bit; break; \
736  case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_##depth##bit; break; \
737  case BLEND_XOR: param->blend = blend_xor_##depth##bit; break; \
738  } \
739 }
746 
747 void ff_blend_init(FilterParams *param, int depth)
748 {
749  switch (depth) {
750  case 8:
751  init_blend_func_8_8bit(param);
752  break;
753  case 9:
754  init_blend_func_9_16bit(param);
755  break;
756  case 10:
757  init_blend_func_10_16bit(param);
758  break;
759  case 12:
760  init_blend_func_12_16bit(param);
761  break;
762  case 16:
763  init_blend_func_16_16bit(param);
764  break;
765  case 32:
766  init_blend_func_32_32bit(param);
767  break;
768  }
769 
770  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
771  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
772  } else if (param->mode == BLEND_NORMAL) {
773  if (param->opacity == 1)
774  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
775  else if (param->opacity == 0)
776  param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
777  }
778 
779  if (ARCH_X86)
780  ff_blend_init_x86(param, depth);
781 }
782 
784 {
785  BlendContext *s = ctx->priv;
786  int ret;
787 
788  for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
789  FilterParams *param = &s->params[plane];
790 
791  if (s->all_mode >= 0)
792  param->mode = s->all_mode;
793  if (s->all_opacity < 1)
794  param->opacity = s->all_opacity;
795 
796  ff_blend_init(param, s->depth);
797 
798  if (s->all_expr && !param->expr_str) {
799  param->expr_str = av_strdup(s->all_expr);
800  if (!param->expr_str)
801  return AVERROR(ENOMEM);
802  }
803  if (param->expr_str) {
804  ret = av_expr_parse(&param->e, param->expr_str, var_names,
805  NULL, NULL, NULL, NULL, 0, ctx);
806  if (ret < 0)
807  return ret;
808  param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
809  }
810  }
811 
812  return 0;
813 }
814 
815 static int config_output(AVFilterLink *outlink)
816 {
817  AVFilterContext *ctx = outlink->src;
818  AVFilterLink *toplink = ctx->inputs[TOP];
819  BlendContext *s = ctx->priv;
820  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
821  int ret;
822 
823  if (!s->tblend) {
824  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
825 
826  if (toplink->format != bottomlink->format) {
827  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
828  return AVERROR(EINVAL);
829  }
830  if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
831  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
832  "(size %dx%d) do not match the corresponding "
833  "second input link %s parameters (size %dx%d)\n",
834  ctx->input_pads[TOP].name, toplink->w, toplink->h,
835  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
836  return AVERROR(EINVAL);
837  }
838  }
839 
840  outlink->w = toplink->w;
841  outlink->h = toplink->h;
842  outlink->time_base = toplink->time_base;
843  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
844  outlink->frame_rate = toplink->frame_rate;
845 
846  s->hsub = pix_desc->log2_chroma_w;
847  s->vsub = pix_desc->log2_chroma_h;
848 
849  s->depth = pix_desc->comp[0].depth;
850  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
851 
852  if (!s->tblend)
853  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
854  return ret;
855 
856  ret = config_params(ctx);
857  if (ret < 0)
858  return ret;
859 
860  if (s->tblend)
861  return 0;
862 
863  ret = ff_framesync_configure(&s->fs);
864  outlink->time_base = s->fs.time_base;
865 
866  return ret;
867 }
868 
869 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
870  char *res, int res_len, int flags)
871 {
872  int ret;
873 
874  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
875  if (ret < 0)
876  return ret;
877 
878  return config_params(ctx);
879 }
880 
881 #if CONFIG_BLEND_FILTER
882 
883 static int activate(AVFilterContext *ctx)
884 {
885  BlendContext *s = ctx->priv;
886  return ff_framesync_activate(&s->fs);
887 }
888 
889 static const AVFilterPad blend_inputs[] = {
890  {
891  .name = "top",
892  .type = AVMEDIA_TYPE_VIDEO,
893  },{
894  .name = "bottom",
895  .type = AVMEDIA_TYPE_VIDEO,
896  },
897  { NULL }
898 };
899 
900 static const AVFilterPad blend_outputs[] = {
901  {
902  .name = "default",
903  .type = AVMEDIA_TYPE_VIDEO,
904  .config_props = config_output,
905  },
906  { NULL }
907 };
908 
910  .name = "blend",
911  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
912  .preinit = blend_framesync_preinit,
913  .init = init,
914  .uninit = uninit,
915  .priv_size = sizeof(BlendContext),
917  .activate = activate,
918  .inputs = blend_inputs,
919  .outputs = blend_outputs,
920  .priv_class = &blend_class,
923 };
924 
925 #endif
926 
927 #if CONFIG_TBLEND_FILTER
928 
929 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
930 {
931  AVFilterContext *ctx = inlink->dst;
932  BlendContext *s = ctx->priv;
933  AVFilterLink *outlink = ctx->outputs[0];
934 
935  if (s->prev_frame) {
936  AVFrame *out;
937 
938  if (ctx->is_disabled)
940  else
941  out = blend_frame(ctx, frame, s->prev_frame);
942  av_frame_free(&s->prev_frame);
943  s->prev_frame = frame;
944  return ff_filter_frame(outlink, out);
945  }
946  s->prev_frame = frame;
947  return 0;
948 }
949 
950 #define tblend_options blend_options
951 AVFILTER_DEFINE_CLASS(tblend);
952 
953 static const AVFilterPad tblend_inputs[] = {
954  {
955  .name = "default",
956  .type = AVMEDIA_TYPE_VIDEO,
957  .filter_frame = tblend_filter_frame,
958  },
959  { NULL }
960 };
961 
962 static const AVFilterPad tblend_outputs[] = {
963  {
964  .name = "default",
965  .type = AVMEDIA_TYPE_VIDEO,
966  .config_props = config_output,
967  },
968  { NULL }
969 };
970 
972  .name = "tblend",
973  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
974  .priv_size = sizeof(BlendContext),
975  .priv_class = &tblend_class,
977  .init = init,
978  .uninit = uninit,
979  .inputs = tblend_inputs,
980  .outputs = tblend_outputs,
983 };
984 
985 #endif
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static int activate(AVFilterContext *ctx)
Definition: af_adeclick.c:630
AVFilter ff_vf_blend
AVFilter ff_vf_tblend
static SoftFloat_IEEE754 multiply(SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
multiply two softfloats and handle the rounding off
Definition: alsdec.c:1387
#define av_cold
Definition: attributes.h:88
uint8_t
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
BlendMode
Definition: blend.h:27
@ BLEND_HARDLIGHT
Definition: blend.h:40
@ BLEND_HARDMIX
Definition: blend.h:54
@ BLEND_PHOENIX
Definition: blend.h:46
@ BLEND_MULTIPLY128
Definition: blend.h:58
@ BLEND_NORMAL
Definition: blend.h:29
@ BLEND_EXTREMITY
Definition: blend.h:61
@ BLEND_XOR
Definition: blend.h:53
@ BLEND_BURN
Definition: blend.h:33
@ BLEND_AVERAGE
Definition: blend.h:32
@ BLEND_DIVIDE
Definition: blend.h:37
@ BLEND_OR
Definition: blend.h:44
@ BLEND_VIVIDLIGHT
Definition: blend.h:52
@ BLEND_EXCLUSION
Definition: blend.h:39
@ BLEND_DIFFERENCE
Definition: blend.h:35
@ BLEND_DARKEN
Definition: blend.h:34
@ BLEND_REFLECT
Definition: blend.h:48
@ BLEND_GRAINEXTRACT
Definition: blend.h:36
@ BLEND_PINLIGHT
Definition: blend.h:47
@ BLEND_DODGE
Definition: blend.h:38
@ BLEND_GLOW
Definition: blend.h:56
@ BLEND_OVERLAY
Definition: blend.h:45
@ BLEND_AND
Definition: blend.h:31
@ BLEND_FREEZE
Definition: blend.h:60
@ BLEND_LIGHTEN
Definition: blend.h:41
@ BLEND_LINEARLIGHT
Definition: blend.h:55
@ BLEND_SOFTLIGHT
Definition: blend.h:50
@ BLEND_GRAINMERGE
Definition: blend.h:57
@ BLEND_SCREEN
Definition: blend.h:49
@ BLEND_NEGATION
Definition: blend.h:43
@ BLEND_HEAT
Definition: blend.h:59
@ BLEND_NB
Definition: blend.h:62
@ BLEND_ADDITION
Definition: blend.h:30
@ BLEND_SUBTRACT
Definition: blend.h:51
@ BLEND_MULTIPLY
Definition: blend.h:42
void ff_blend_init_x86(FilterParams *param, int depth)
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define bit(string, value)
Definition: cbs_mpeg2.c:58
#define s(width, name)
Definition: cbs_vp9.c:257
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
#define FFMIN(a, b)
Definition: common.h:105
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define FFMAX(a, b)
Definition: common.h:103
#define av_clip_uint8
Definition: common.h:128
#define av_clip_uint16
Definition: common.h:134
#define av_clip_uintp2
Definition: common.h:146
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define ARCH_X86
Definition: config.h:39
#define NULL
Definition: coverity.c:32
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
static AVFrame * frame
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
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
simple arithmetic expression evaluator
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:587
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:124
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:376
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:341
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:358
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:290
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#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:134
#define AVERROR(e)
Definition: error.h:43
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
misc image utilities
int i
Definition: input.c:407
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
const char * arg
Definition: jacosubdec.c:66
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:288
static const AVOption blend_options[]
Definition: vf_blend.c:66
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:188
#define DEFINE_INIT_BLEND_FUNC(depth, nbits)
Definition: vf_blend.c:701
#define B
Definition: vf_blend.c:286
void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend.c:747
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:163
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
static int blend_frame_for_dualinput(FFFrameSync *fs)
Definition: vf_blend.c:636
#define COPY(src, depth)
Definition: vf_blend.c:122
static int query_formats(AVFilterContext *ctx)
Definition: vf_blend.c:661
#define DEFINE_BLEND32(name, expr, depth)
Definition: vf_blend.c:259
#define FLAGS
Definition: vf_blend.c:64
#define DEFINE_BLEND_EXPR(type, name, div)
@ VAR_H
Definition: vf_blend.c:52
@ VAR_TOP
Definition: vf_blend.c:52
@ VAR_SW
Definition: vf_blend.c:52
@ VAR_N
Definition: vf_blend.c:52
@ VAR_W
Definition: vf_blend.c:52
@ VAR_A
Definition: vf_blend.c:52
@ VAR_SH
Definition: vf_blend.c:52
@ VAR_VARS_NB
Definition: vf_blend.c:52
@ VAR_BOTTOM
Definition: vf_blend.c:52
@ VAR_X
Definition: vf_blend.c:52
@ VAR_T
Definition: vf_blend.c:52
@ VAR_Y
Definition: vf_blend.c:52
@ VAR_B
Definition: vf_blend.c:52
#define A
Definition: vf_blend.c:285
#define BURN(a, b)
Definition: vf_blend.c:290
#define SCREEN(x, a, b)
Definition: vf_blend.c:289
static const char *const var_names[]
Definition: vf_blend.c:51
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_blend.c:869
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:651
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:689
static int config_params(AVFilterContext *ctx)
Definition: vf_blend.c:783
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:144
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:603
#define OFFSET(x)
Definition: vf_blend.c:63
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:815
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:288
#define BOTTOM
Definition: vf_blend.c:34
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:213
#define DEFINE_BLEND16(name, expr, depth)
Definition: vf_blend.c:233
#define DODGE(a, b)
Definition: vf_blend.c:291
#define TOP
Definition: vf_blend.c:33
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
#define NAN
Definition: mathematics.h:64
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2033
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
pixel format definitions
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:428
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:431
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
@ AV_PIX_FMT_YUVJ420P
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_YUVA422P12
Definition: pixfmt.h:439
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:401
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:429
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
#define td
Definition: regdef.h:70
#define FF_ARRAY_ELEMS(a)
Describe the class of an AVClass context structure.
Definition: log.h:67
int depth
Number of bits in the component.
Definition: pixdesc.h:58
An instance of a filter.
Definition: avfilter.h:341
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int width
Definition: frame.h:376
int height
Definition: frame.h:376
AVOption.
Definition: opt.h:248
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
AVFrame * prev_frame
Definition: vf_blend.c:48
int vsub
chroma subsampling values
Definition: vf_blend.c:39
int nb_planes
Definition: vf_blend.c:40
FFFrameSync fs
Definition: vf_blend.c:38
int tblend
Definition: vf_blend.c:47
FilterParams params[4]
Definition: vf_blend.c:46
char * all_expr
Definition: vf_blend.c:41
enum BlendMode all_mode
Definition: vf_blend.c:42
double all_opacity
Definition: vf_blend.c:43
Frame sync structure.
Definition: framesync.h:146
filter data
Definition: mlp.h:74
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
char * expr_str
Definition: blend.h:69
AVExpr * e
Definition: blend.h:68
enum BlendMode mode
Definition: blend.h:66
double opacity
Definition: blend.h:67
Used for passing data between threads.
Definition: dsddec.c:67
const AVFrame * top
Definition: vf_blend.c:55
FilterParams * param
Definition: vf_blend.c:60
const AVFrame * bottom
Definition: vf_blend.c:55
AVFilterLink * inlink
Definition: vf_blend.c:57
AVFrame * dst
Definition: vf_blend.c:56
int plane
Definition: vf_blend.c:58
#define av_log(a,...)
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
#define height
#define width
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:75
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