FFmpeg
vf_blend.c
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1 /*
2  * Copyright (c) 2013 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/imgutils.h"
22 #include "libavutil/intfloat.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixfmt.h"
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "framesync.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "blend.h"
32 
33 #define TOP 0
34 #define BOTTOM 1
35 
36 typedef struct BlendContext {
37  const AVClass *class;
39  int hsub, vsub; ///< chroma subsampling values
40  int nb_planes;
41  char *all_expr;
43  double all_opacity;
44 
45  int depth;
47  int tblend;
48  AVFrame *prev_frame; /* only used with tblend */
49 } BlendContext;
50 
51 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
53 
54 typedef struct ThreadData {
55  const AVFrame *top, *bottom;
58  int plane;
59  int w, h;
61 } ThreadData;
62 
63 #define 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 float 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.f - 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 float 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.f - 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 float 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.f - 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  const float 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  const float 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  const float 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 
571 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
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 
629  }
630 
631  if (!s->tblend)
632  av_frame_free(&top_buf);
633 
634  return dst_buf;
635 }
636 
638 {
639  AVFilterContext *ctx = fs->parent;
640  AVFrame *top_buf, *bottom_buf, *dst_buf;
641  int ret;
642 
643  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
644  if (ret < 0)
645  return ret;
646  if (!bottom_buf)
647  return ff_filter_frame(ctx->outputs[0], top_buf);
648  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
649  return ff_filter_frame(ctx->outputs[0], dst_buf);
650 }
651 
653 {
654  BlendContext *s = ctx->priv;
655 
656  s->tblend = !strcmp(ctx->filter->name, "tblend");
657 
658  s->fs.on_event = blend_frame_for_dualinput;
659  return 0;
660 }
661 
663 {
664  static const enum AVPixelFormat pix_fmts[] = {
682  };
683 
685 }
686 
688 {
689  BlendContext *s = ctx->priv;
690  int i;
691 
692  ff_framesync_uninit(&s->fs);
693  av_frame_free(&s->prev_frame);
694 
695  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
696  av_expr_free(s->params[i].e);
697 }
698 
699 #define DEFINE_INIT_BLEND_FUNC(depth, nbits) \
700 static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param) \
701 { \
702  switch (param->mode) { \
703  case BLEND_ADDITION: param->blend = blend_addition_##depth##bit; break; \
704  case BLEND_GRAINMERGE: param->blend = blend_grainmerge_##depth##bit; break; \
705  case BLEND_AND: param->blend = blend_and_##depth##bit; break; \
706  case BLEND_AVERAGE: param->blend = blend_average_##depth##bit; break; \
707  case BLEND_BURN: param->blend = blend_burn_##depth##bit; break; \
708  case BLEND_DARKEN: param->blend = blend_darken_##depth##bit; break; \
709  case BLEND_DIFFERENCE: param->blend = blend_difference_##depth##bit; break; \
710  case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_##depth##bit; break; \
711  case BLEND_DIVIDE: param->blend = blend_divide_##depth##bit; break; \
712  case BLEND_DODGE: param->blend = blend_dodge_##depth##bit; break; \
713  case BLEND_EXCLUSION: param->blend = blend_exclusion_##depth##bit; break; \
714  case BLEND_EXTREMITY: param->blend = blend_extremity_##depth##bit; break; \
715  case BLEND_FREEZE: param->blend = blend_freeze_##depth##bit; break; \
716  case BLEND_GLOW: param->blend = blend_glow_##depth##bit; break; \
717  case BLEND_HARDLIGHT: param->blend = blend_hardlight_##depth##bit; break; \
718  case BLEND_HARDMIX: param->blend = blend_hardmix_##depth##bit; break; \
719  case BLEND_HEAT: param->blend = blend_heat_##depth##bit; break; \
720  case BLEND_LIGHTEN: param->blend = blend_lighten_##depth##bit; break; \
721  case BLEND_LINEARLIGHT: param->blend = blend_linearlight_##depth##bit; break; \
722  case BLEND_MULTIPLY: param->blend = blend_multiply_##depth##bit; break; \
723  case BLEND_MULTIPLY128: param->blend = blend_multiply128_##depth##bit; break; \
724  case BLEND_NEGATION: param->blend = blend_negation_##depth##bit; break; \
725  case BLEND_NORMAL: param->blend = blend_normal_##nbits##bit; break; \
726  case BLEND_OR: param->blend = blend_or_##depth##bit; break; \
727  case BLEND_OVERLAY: param->blend = blend_overlay_##depth##bit; break; \
728  case BLEND_PHOENIX: param->blend = blend_phoenix_##depth##bit; break; \
729  case BLEND_PINLIGHT: param->blend = blend_pinlight_##depth##bit; break; \
730  case BLEND_REFLECT: param->blend = blend_reflect_##depth##bit; break; \
731  case BLEND_SCREEN: param->blend = blend_screen_##depth##bit; break; \
732  case BLEND_SOFTLIGHT: param->blend = blend_softlight_##depth##bit; break; \
733  case BLEND_SUBTRACT: param->blend = blend_subtract_##depth##bit; break; \
734  case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_##depth##bit; break; \
735  case BLEND_XOR: param->blend = blend_xor_##depth##bit; break; \
736  } \
737 }
744 
745 void ff_blend_init(FilterParams *param, int depth)
746 {
747  switch (depth) {
748  case 8:
749  init_blend_func_8_8bit(param);
750  break;
751  case 9:
752  init_blend_func_9_16bit(param);
753  break;
754  case 10:
755  init_blend_func_10_16bit(param);
756  break;
757  case 12:
758  init_blend_func_12_16bit(param);
759  break;
760  case 16:
761  init_blend_func_16_16bit(param);
762  break;
763  case 32:
764  init_blend_func_32_32bit(param);
765  break;
766  }
767 
768  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
769  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
770  } else if (param->mode == BLEND_NORMAL) {
771  if (param->opacity == 1)
772  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
773  else if (param->opacity == 0)
774  param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
775  }
776 
777  if (ARCH_X86)
778  ff_blend_init_x86(param, depth);
779 }
780 
782 {
783  BlendContext *s = ctx->priv;
784  int ret;
785 
786  for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
787  FilterParams *param = &s->params[plane];
788 
789  if (s->all_mode >= 0)
790  param->mode = s->all_mode;
791  if (s->all_opacity < 1)
792  param->opacity = s->all_opacity;
793 
794  ff_blend_init(param, s->depth);
795 
796  if (s->all_expr && !param->expr_str) {
797  param->expr_str = av_strdup(s->all_expr);
798  if (!param->expr_str)
799  return AVERROR(ENOMEM);
800  }
801  if (param->expr_str) {
802  ret = av_expr_parse(&param->e, param->expr_str, var_names,
803  NULL, NULL, NULL, NULL, 0, ctx);
804  if (ret < 0)
805  return ret;
806  param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
807  }
808  }
809 
810  return 0;
811 }
812 
813 static int config_output(AVFilterLink *outlink)
814 {
815  AVFilterContext *ctx = outlink->src;
816  AVFilterLink *toplink = ctx->inputs[TOP];
817  BlendContext *s = ctx->priv;
818  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
819  int ret;
820 
821  if (!s->tblend) {
822  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
823 
824  if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
825  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
826  "(size %dx%d) do not match the corresponding "
827  "second input link %s parameters (size %dx%d)\n",
828  ctx->input_pads[TOP].name, toplink->w, toplink->h,
829  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
830  return AVERROR(EINVAL);
831  }
832  }
833 
834  outlink->w = toplink->w;
835  outlink->h = toplink->h;
836  outlink->time_base = toplink->time_base;
837  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
838  outlink->frame_rate = toplink->frame_rate;
839 
840  s->hsub = pix_desc->log2_chroma_w;
841  s->vsub = pix_desc->log2_chroma_h;
842 
843  s->depth = pix_desc->comp[0].depth;
844  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
845 
846  if (!s->tblend)
847  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
848  return ret;
849 
850  ret = config_params(ctx);
851  if (ret < 0)
852  return ret;
853 
854  if (s->tblend)
855  return 0;
856 
857  ret = ff_framesync_configure(&s->fs);
858  outlink->time_base = s->fs.time_base;
859 
860  return ret;
861 }
862 
863 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
864  char *res, int res_len, int flags)
865 {
866  int ret;
867 
868  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
869  if (ret < 0)
870  return ret;
871 
872  return config_params(ctx);
873 }
874 
875 #if CONFIG_BLEND_FILTER
876 
877 static int activate(AVFilterContext *ctx)
878 {
879  BlendContext *s = ctx->priv;
880  return ff_framesync_activate(&s->fs);
881 }
882 
883 static const AVFilterPad blend_inputs[] = {
884  {
885  .name = "top",
886  .type = AVMEDIA_TYPE_VIDEO,
887  },{
888  .name = "bottom",
889  .type = AVMEDIA_TYPE_VIDEO,
890  },
891 };
892 
893 static const AVFilterPad blend_outputs[] = {
894  {
895  .name = "default",
896  .type = AVMEDIA_TYPE_VIDEO,
897  .config_props = config_output,
898  },
899 };
900 
901 const AVFilter ff_vf_blend = {
902  .name = "blend",
903  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
904  .preinit = blend_framesync_preinit,
905  .init = init,
906  .uninit = uninit,
907  .priv_size = sizeof(BlendContext),
909  .activate = activate,
910  FILTER_INPUTS(blend_inputs),
911  FILTER_OUTPUTS(blend_outputs),
912  .priv_class = &blend_class,
914  .process_command = process_command,
915 };
916 
917 #endif
918 
919 #if CONFIG_TBLEND_FILTER
920 
921 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
922 {
923  AVFilterContext *ctx = inlink->dst;
924  BlendContext *s = ctx->priv;
925  AVFilterLink *outlink = ctx->outputs[0];
926 
927  if (s->prev_frame) {
928  AVFrame *out;
929 
930  if (ctx->is_disabled)
932  else
933  out = blend_frame(ctx, frame, s->prev_frame);
934  av_frame_free(&s->prev_frame);
935  s->prev_frame = frame;
936  return ff_filter_frame(outlink, out);
937  }
938  s->prev_frame = frame;
939  return 0;
940 }
941 
942 AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options);
943 
944 static const AVFilterPad tblend_inputs[] = {
945  {
946  .name = "default",
947  .type = AVMEDIA_TYPE_VIDEO,
948  .filter_frame = tblend_filter_frame,
949  },
950 };
951 
952 static const AVFilterPad tblend_outputs[] = {
953  {
954  .name = "default",
955  .type = AVMEDIA_TYPE_VIDEO,
956  .config_props = config_output,
957  },
958 };
959 
960 const AVFilter ff_vf_tblend = {
961  .name = "tblend",
962  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
963  .priv_size = sizeof(BlendContext),
964  .priv_class = &tblend_class,
966  .init = init,
967  .uninit = uninit,
968  FILTER_INPUTS(tblend_inputs),
969  FILTER_OUTPUTS(tblend_outputs),
971  .process_command = process_command,
972 };
973 
974 #endif
BLEND_GLOW
@ BLEND_GLOW
Definition: blend.h:56
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:98
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:411
BlendContext::vsub
int vsub
chroma subsampling values
Definition: vf_blend.c:39
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:119
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
BLEND_EXCLUSION
@ BLEND_EXCLUSION
Definition: blend.h:39
BURN
#define BURN(a, b)
Definition: vf_blend.c:290
AVERROR
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
opt.h
DEFINE_BLEND32
#define DEFINE_BLEND32(name, expr, depth)
Definition: vf_blend.c:259
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:285
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1019
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
av_clip_uintp2
#define av_clip_uintp2
Definition: common.h:120
inlink
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
Definition: filter_design.txt:212
FilterParams::expr_str
char * expr_str
Definition: blend.h:69
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:424
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
AVFrame::width
int width
Definition: frame.h:361
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:431
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
VAR_SW
@ VAR_SW
Definition: vf_blend.c:52
AVOption
AVOption.
Definition: opt.h:247
ThreadData::bottom
const AVFrame * bottom
Definition: vf_blend.c:55
OFFSET
#define OFFSET(x)
Definition: vf_blend.c:63
VAR_SH
@ VAR_SH
Definition: vf_blend.c:52
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
FilterParams::e
AVExpr * e
Definition: blend.h:68
BLEND_NEGATION
@ BLEND_NEGATION
Definition: blend.h:43
blend_normal_8bit
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
blend_normal_32bit
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
A
#define A
Definition: vf_blend.c:285
ThreadData::w
int w
Definition: vf_blend.c:59
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
var_names
static const char *const var_names[]
Definition: vf_blend.c:51
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
AVFILTER_DEFINE_CLASS_EXT
#define AVFILTER_DEFINE_CLASS_EXT(name, desc, options)
Definition: internal.h:281
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
av_float2int
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
intfloat.h
video.h
BLEND_ADDITION
@ BLEND_ADDITION
Definition: blend.h:30
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
BLEND_MULTIPLY128
@ BLEND_MULTIPLY128
Definition: blend.h:58
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_blend.c:863
BLEND_NB
@ BLEND_NB
Definition: blend.h:62
formats.h
av_expr_parse
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
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:58
BLEND_DIVIDE
@ BLEND_DIVIDE
Definition: blend.h:37
BLEND_PHOENIX
@ BLEND_PHOENIX
Definition: blend.h:46
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
B
#define B
Definition: vf_blend.c:286
VAR_A
@ VAR_A
Definition: vf_blend.c:52
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
av_int2float
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition: intfloat.h:40
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
blend_normal_16bit
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
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
config_params
static int config_params(AVFilterContext *ctx)
Definition: vf_blend.c:781
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:373
BLEND_AND
@ BLEND_AND
Definition: blend.h:31
DEFINE_BLEND8
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:213
BlendContext::params
FilterParams params[4]
Definition: vf_blend.c:46
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
DEFINE_BLEND_EXPR
#define DEFINE_BLEND_EXPR(type, name, div)
blend_options
static const AVOption blend_options[]
Definition: vf_blend.c:66
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
BLEND_SOFTLIGHT
@ BLEND_SOFTLIGHT
Definition: blend.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
AV_PIX_FMT_YUVJ411P
@ 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:248
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:401
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_blend.c:52
AV_PIX_FMT_YUVJ422P
@ 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_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:409
ThreadData::plane
int plane
Definition: vf_blend.c:58
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
BLEND_OR
@ BLEND_OR
Definition: blend.h:44
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:410
MULTIPLY
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:288
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
BLEND_SCREEN
@ BLEND_SCREEN
Definition: blend.h:49
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2041
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:703
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:430
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
ctx
AVFormatContext * ctx
Definition: movenc.c:48
multiply
static SoftFloat_IEEE754 multiply(SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
multiply two softfloats and handle the rounding off
Definition: alsdec.c:1387
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:424
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
AV_PIX_FMT_YUV420P
@ 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_GRAYF32
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:421
BLEND_EXTREMITY
@ BLEND_EXTREMITY
Definition: blend.h:61
VAR_TOP
@ VAR_TOP
Definition: vf_blend.c:52
NAN
#define NAN
Definition: mathematics.h:64
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:152
ThreadData::h
int h
Definition: vf_blend.c:59
AV_PIX_FMT_YUVJ444P
@ 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
arg
const char * arg
Definition: jacosubdec.c:67
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:65
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:370
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:56
BLEND_PINLIGHT
@ BLEND_PINLIGHT
Definition: blend.h:47
FilterParams::mode
enum BlendMode mode
Definition: blend.h:66
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:408
VAR_X
@ VAR_X
Definition: vf_blend.c:52
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
fabs
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
BLEND_MULTIPLY
@ BLEND_MULTIPLY
Definition: blend.h:42
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
BlendMode
BlendMode
Definition: blend.h:27
AV_PIX_FMT_YUVJ420P
@ 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
BlendContext::depth
int depth
Definition: vf_blend.c:45
activate
filter_frame For filters that do not use the activate() callback
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:391
VAR_W
@ VAR_W
Definition: vf_blend.c:52
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:652
ff_blend_init_x86
void ff_blend_init_x86(FilterParams *param, int depth)
Definition: vf_blend_init.c:103
DEFINE_INIT_BLEND_FUNC
#define DEFINE_INIT_BLEND_FUNC(depth, nbits)
Definition: vf_blend.c:699
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:404
BLEND_SUBTRACT
@ BLEND_SUBTRACT
Definition: blend.h:51
BLEND_FREEZE
@ BLEND_FREEZE
Definition: blend.h:60
FilterParams
filter data
Definition: mlp.h:75
BLEND_LIGHTEN
@ BLEND_LIGHTEN
Definition: blend.h:41
BLEND_HEAT
@ BLEND_HEAT
Definition: blend.h:59
eval.h
VAR_B
@ VAR_B
Definition: vf_blend.c:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:353
DEFINE_BLEND16
#define DEFINE_BLEND16(name, expr, depth)
Definition: vf_blend.c:233
BlendContext::prev_frame
AVFrame * prev_frame
Definition: vf_blend.c:48
COPY
#define COPY(src, depth)
Definition: vf_blend.c:122
AV_PIX_FMT_GBRPF32
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:418
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
BLEND_DODGE
@ BLEND_DODGE
Definition: blend.h:38
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_blend.c:662
BlendContext::all_expr
char * all_expr
Definition: vf_blend.c:41
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
BlendContext::tblend
int tblend
Definition: vf_blend.c:47
BlendContext
Definition: vf_blend.c:36
ff_vf_tblend
const AVFilter ff_vf_tblend
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
BlendContext::hsub
int hsub
Definition: vf_blend.c:39
ff_filter_process_command
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:883
height
#define height
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:428
ThreadData::param
FilterParams * param
Definition: vf_blend.c:60
internal.h
BLEND_HARDLIGHT
@ BLEND_HARDLIGHT
Definition: blend.h:40
BlendContext::all_mode
enum BlendMode all_mode
Definition: vf_blend.c:42
VAR_T
@ VAR_T
Definition: vf_blend.c:52
i
int i
Definition: input.c:406
ff_vf_blend
const AVFilter ff_vf_blend
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:406
BlendContext::fs
FFFrameSync fs
Definition: vf_blend.c:38
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:804
blend.h
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
VAR_N
@ VAR_N
Definition: vf_blend.c:52
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ 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
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
BLEND_VIVIDLIGHT
@ BLEND_VIVIDLIGHT
Definition: blend.h:52
TOP
#define TOP
Definition: vf_blend.c:33
BLEND_DIFFERENCE
@ BLEND_DIFFERENCE
Definition: blend.h:35
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
BlendContext::nb_planes
int nb_planes
Definition: vf_blend.c:40
ff_blend_init
void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend.c:745
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:813
AVFilter
Filter definition.
Definition: avfilter.h:149
VAR_BOTTOM
@ VAR_BOTTOM
Definition: vf_blend.c:52
BLEND_HARDMIX
@ BLEND_HARDMIX
Definition: blend.h:54
ret
ret
Definition: filter_design.txt:187
BLEND_GRAINMERGE
@ BLEND_GRAINMERGE
Definition: blend.h:57
pixfmt.h
frame
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
Definition: filter_design.txt:264
SCREEN
#define SCREEN(x, a, b)
Definition: vf_blend.c:289
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
DODGE
#define DODGE(a, b)
Definition: vf_blend.c:291
ThreadData::inlink
AVFilterLink * inlink
Definition: vf_blend.c:57
AVFrame::height
int height
Definition: frame.h:361
framesync.h
blend_frame
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:603
mode
mode
Definition: ebur128.h:83
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:429
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
AV_PIX_FMT_GBRAPF32
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:419
values
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
Definition: filter_design.txt:263
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
BLEND_XOR
@ BLEND_XOR
Definition: blend.h:53
BlendContext::all_opacity
double all_opacity
Definition: vf_blend.c:43
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:687
VAR_H
@ VAR_H
Definition: vf_blend.c:52
av_clip_uint8
#define av_clip_uint8
Definition: common.h:102
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:346
av_clip_uint16
#define av_clip_uint16
Definition: common.h:108
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:121
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:279
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
BLEND_DARKEN
@ BLEND_DARKEN
Definition: blend.h:34
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
blend_frame_for_dualinput
static int blend_frame_for_dualinput(FFFrameSync *fs)
Definition: vf_blend.c:637
BLEND_AVERAGE
@ BLEND_AVERAGE
Definition: blend.h:32
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:153
FilterParams::opacity
double opacity
Definition: blend.h:67
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
ThreadData::top
const AVFrame * top
Definition: vf_blend.c:55
FilterParams::blend
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
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#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:138
VAR_Y
@ VAR_Y
Definition: vf_blend.c:52
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:395
BLEND_BURN
@ BLEND_BURN
Definition: blend.h:33
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:336
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:371
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:371
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:143
BLEND_REFLECT
@ BLEND_REFLECT
Definition: blend.h:48
BLEND_GRAINEXTRACT
@ BLEND_GRAINEXTRACT
Definition: blend.h:36
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_atadenoise.c:344
BOTTOM
#define BOTTOM
Definition: vf_blend.c:34
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
FLAGS
#define FLAGS
Definition: vf_blend.c:64
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
BLEND_LINEARLIGHT
@ BLEND_LINEARLIGHT
Definition: blend.h:55
BLEND_NORMAL
@ BLEND_NORMAL
Definition: blend.h:29
BLEND_OVERLAY
@ BLEND_OVERLAY
Definition: blend.h:45