FFmpeg
vf_blend.c
Go to the documentation of this file.
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 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)
340 DEFINE_BLEND16(multiply, MULTIPLY(1, 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)
383 DEFINE_BLEND16(multiply, MULTIPLY(1, 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)
426 DEFINE_BLEND16(multiply, MULTIPLY(1, 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)
469 DEFINE_BLEND16(multiply, MULTIPLY(1, 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 
627  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
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 
658  return 0;
659 }
660 
662 {
663  static const enum AVPixelFormat pix_fmts[] = {
681  };
682 
683  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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);
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 
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;
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)
939  out = av_frame_clone(frame);
940  else
941  out = blend_frame(ctx, frame, 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
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
Definition: vf_blend.c:52
AVExpr * e
Definition: blend.h:68
#define TOP
Definition: vf_blend.c:33
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_blend.c:869
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:401
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define av_clip_uintp2
Definition: common.h:146
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
double opacity
Definition: blend.h:67
AVOption.
Definition: opt.h:248
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:436
void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend.c:747
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
enum BlendMode all_mode
Definition: vf_blend.c:42
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
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:163
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
Main libavfilter public API header.
Definition: blend.h:62
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:415
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
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:124
#define FF_ARRAY_ELEMS(a)
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
Definition: vf_blend.c:52
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:388
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:701
int tblend
Definition: vf_blend.c:47
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
Definition: vf_blend.c:52
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:381
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:349
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
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:358
Definition: vf_blend.c:52
filter_frame For filters that do not use the activate() callback
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:213
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:376
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
const AVFrame * bottom
Definition: vf_blend.c:55
AVFilter ff_vf_blend
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#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:661
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
FilterParams params[4]
Definition: vf_blend.c:46
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:815
#define av_log(a,...)
AVFrame * prev_frame
Definition: vf_blend.c:48
A filter pad used for either input or output.
Definition: internal.h:54
#define COPY(src, depth)
Definition: vf_blend.c:122
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:348
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
int width
Definition: frame.h:376
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
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:588
#define td
Definition: regdef.h:70
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:651
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:689
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:290
Definition: vf_blend.c:52
Frame sync structure.
Definition: framesync.h:146
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
#define DEFINE_BLEND16(name, expr, depth)
Definition: vf_blend.c:233
#define SCREEN(x, a, b)
Definition: vf_blend.c:289
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:204
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:117
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
void * priv
private data for use by the filter
Definition: avfilter.h:356
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
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:443
const char * arg
Definition: jacosubdec.c:66
GLenum GLint * params
Definition: opengl_enc.c:113
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:341
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define B
Definition: vf_blend.c:286
#define FFMAX(a, b)
Definition: common.h:103
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define FLAGS
Definition: vf_blend.c:64
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define A
Definition: vf_blend.c:285
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define NAN
Definition: mathematics.h:64
#define av_clip_uint16
Definition: common.h:134
#define FFMIN(a, b)
Definition: common.h:105
#define DEFINE_BLEND_EXPR(type, name, div)
#define DODGE(a, b)
Definition: vf_blend.c:291
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:440
#define width
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return values
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
#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
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
AVFilter ff_vf_tblend
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
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 AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:431
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:144
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:349
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:290
Definition: vf_blend.c:52
filter data
Definition: mlp.h:74
FFFrameSync fs
Definition: vf_blend.c:38
static const AVOption blend_options[]
Definition: vf_blend.c:66
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
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:145
void ff_blend_init_x86(FilterParams *param, int depth)
const char * name
Filter name.
Definition: avfilter.h:149
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#define DEFINE_BLEND32(name, expr, depth)
Definition: vf_blend.c:259
#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
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:353
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:381
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:288
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
int nb_planes
Definition: vf_blend.c:40
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:428
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:429
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:435
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
#define OFFSET(x)
Definition: vf_blend.c:63
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:136
const AVFrame * top
Definition: vf_blend.c:55
static int config_params(AVFilterContext *ctx)
Definition: vf_blend.c:783
Definition: vf_blend.c:52
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2033
pixel format definitions
#define av_clip_uint8
Definition: common.h:128
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:288
Definition: blend.h:44
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:603
A list of supported formats for one end of a filter link.
Definition: formats.h:65
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:636
An instance of a filter.
Definition: avfilter.h:341
int height
Definition: frame.h:376
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
Definition: vf_blend.c:52
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
AVFilterLink * inlink
Definition: vf_blend.c:57
internal API functions
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:344
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
int i
Definition: input.c:407
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58