2 * Copyright (c) 2013 Paul B Mahol
4 * This file is part of FFmpeg.
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.
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.
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
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"
28 #include "framesync.h"
36 typedef struct BlendContext {
39 int hsub, vsub; ///< chroma subsampling values
42 enum BlendMode all_mode;
46 FilterParams params[4];
48 AVFrame *prev_frame; /* only used with tblend */
51 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
52 enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_SW, VAR_SH, VAR_T, VAR_N, VAR_A, VAR_B, VAR_TOP, VAR_BOTTOM, VAR_VARS_NB };
54 typedef struct ThreadData {
55 const AVFrame *top, *bottom;
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
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 },
120 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
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) \
129 av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
130 width * depth / 8, height); \
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)
150 const double opacity = param->opacity;
153 for (i = 0; i < height; i++) {
154 for (j = 0; j < width; j++) {
155 dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
159 bottom += bottom_linesize;
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)
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;
176 bottom_linesize /= 2;
178 for (i = 0; i < height; i++) {
179 for (j = 0; j < width; j++) {
180 dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
184 bottom += bottom_linesize;
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)
194 const float *top = (float*)_top;
195 const float *bottom = (float*)_bottom;
196 float *dst = (float*)_dst;
197 const double opacity = param->opacity;
201 bottom_linesize /= 4;
203 for (i = 0; i < height; i++) {
204 for (j = 0; j < width; j++) {
205 dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
209 bottom += bottom_linesize;
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) \
220 double opacity = param->opacity; \
223 for (i = 0; i < height; i++) { \
224 for (j = 0; j < width; j++) { \
225 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
227 dst += dst_linesize; \
228 top += top_linesize; \
229 bottom += bottom_linesize; \
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) \
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; \
247 bottom_linesize /= 2; \
249 for (i = 0; i < height; i++) { \
250 for (j = 0; j < width; j++) { \
251 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
253 dst += dst_linesize; \
254 top += top_linesize; \
255 bottom += bottom_linesize; \
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) \
266 const float *top = (const float*)_top; \
267 const float *bottom = (const float*)_bottom; \
268 float *dst = (float*)_dst; \
269 double opacity = param->opacity; \
273 bottom_linesize /= 4; \
275 for (i = 0; i < height; i++) { \
276 for (j = 0; j < width; j++) { \
277 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
279 dst += dst_linesize; \
280 top += top_linesize; \
281 bottom += bottom_linesize; \
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)))))
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))
297 DEFINE_BLEND8(multiply, MULTIPLY(1, 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)))
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)))))
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)
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)))))
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)
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)))))
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)
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)))))
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)
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)))))
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)
535 DEFINE_BLEND32(and, av_int2float(av_float2int(A) & av_float2int(B)), 32)
536 DEFINE_BLEND32(or, av_int2float(av_float2int(A) | av_float2int(B)), 32)
537 DEFINE_BLEND32(xor, av_int2float(av_float2int(A) ^ av_float2int(B)), 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)
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) \
548 const type *top = (type*)_top; \
549 const type *bottom = (type*)_bottom; \
550 type *dst = (type*)_dst; \
551 AVExpr *e = param->e; \
553 dst_linesize /= div; \
554 top_linesize /= div; \
555 bottom_linesize /= div; \
557 for (y = 0; y < height; y++) { \
558 values[VAR_Y] = y + starty; \
559 for (x = 0; x < width; 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); \
565 dst += dst_linesize; \
566 top += top_linesize; \
567 bottom += bottom_linesize; \
571 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
572 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
573 DEFINE_BLEND_EXPR(float, 32bit, 4)
575 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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];
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;
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);
603 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
604 const AVFrame *bottom_buf)
606 BlendContext *s = ctx->priv;
607 AVFilterLink *inlink = ctx->inputs[0];
608 AVFilterLink *outlink = ctx->outputs[0];
612 dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
615 av_frame_copy_props(dst_buf, top_buf);
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,
627 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
631 av_frame_free(&top_buf);
636 static int blend_frame_for_dualinput(FFFrameSync *fs)
638 AVFilterContext *ctx = fs->parent;
639 AVFrame *top_buf, *bottom_buf, *dst_buf;
642 ret = ff_framesync_dualinput_get(fs, &top_buf, &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);
651 static av_cold int init(AVFilterContext *ctx)
653 BlendContext *s = ctx->priv;
655 s->tblend = !strcmp(ctx->filter->name, "tblend");
657 s->fs.on_event = blend_frame_for_dualinput;
661 static int query_formats(AVFilterContext *ctx)
663 static const enum AVPixelFormat pix_fmts[] = {
664 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
665 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
666 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
667 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
668 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
669 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9,
670 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
671 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
672 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
673 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
674 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
675 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
676 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
677 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
678 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
679 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
683 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
685 return AVERROR(ENOMEM);
686 return ff_set_common_formats(ctx, fmts_list);
689 static av_cold void uninit(AVFilterContext *ctx)
691 BlendContext *s = ctx->priv;
694 ff_framesync_uninit(&s->fs);
695 av_frame_free(&s->prev_frame);
697 for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
698 av_expr_free(s->params[i].e);
701 #define DEFINE_INIT_BLEND_FUNC(depth, nbits) \
702 static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param) \
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; \
740 DEFINE_INIT_BLEND_FUNC(8, 8)
741 DEFINE_INIT_BLEND_FUNC(9, 16)
742 DEFINE_INIT_BLEND_FUNC(10, 16)
743 DEFINE_INIT_BLEND_FUNC(12, 16)
744 DEFINE_INIT_BLEND_FUNC(16, 16)
745 DEFINE_INIT_BLEND_FUNC(32, 32)
747 void ff_blend_init(FilterParams *param, int depth)
751 init_blend_func_8_8bit(param);
754 init_blend_func_9_16bit(param);
757 init_blend_func_10_16bit(param);
760 init_blend_func_12_16bit(param);
763 init_blend_func_16_16bit(param);
766 init_blend_func_32_32bit(param);
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;
780 ff_blend_init_x86(param, depth);
783 static int config_params(AVFilterContext *ctx)
785 BlendContext *s = ctx->priv;
788 for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
789 FilterParams *param = &s->params[plane];
791 if (s->all_mode >= 0)
792 param->mode = s->all_mode;
793 if (s->all_opacity < 1)
794 param->opacity = s->all_opacity;
796 ff_blend_init(param, s->depth);
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);
803 if (param->expr_str) {
804 ret = av_expr_parse(¶m->e, param->expr_str, var_names,
805 NULL, NULL, NULL, NULL, 0, ctx);
808 param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
815 static int config_output(AVFilterLink *outlink)
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);
824 AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
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);
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);
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;
846 s->hsub = pix_desc->log2_chroma_w;
847 s->vsub = pix_desc->log2_chroma_h;
849 s->depth = pix_desc->comp[0].depth;
850 s->nb_planes = av_pix_fmt_count_planes(toplink->format);
853 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
856 ret = config_params(ctx);
863 ret = ff_framesync_configure(&s->fs);
864 outlink->time_base = s->fs.time_base;
869 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
870 char *res, int res_len, int flags)
874 ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
878 return config_params(ctx);
881 #if CONFIG_BLEND_FILTER
883 static int activate(AVFilterContext *ctx)
885 BlendContext *s = ctx->priv;
886 return ff_framesync_activate(&s->fs);
889 static const AVFilterPad blend_inputs[] = {
892 .type = AVMEDIA_TYPE_VIDEO,
895 .type = AVMEDIA_TYPE_VIDEO,
900 static const AVFilterPad blend_outputs[] = {
903 .type = AVMEDIA_TYPE_VIDEO,
904 .config_props = config_output,
909 const AVFilter ff_vf_blend = {
911 .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
912 .preinit = blend_framesync_preinit,
915 .priv_size = sizeof(BlendContext),
916 .query_formats = query_formats,
917 .activate = activate,
918 .inputs = blend_inputs,
919 .outputs = blend_outputs,
920 .priv_class = &blend_class,
921 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
922 .process_command = process_command,
927 #if CONFIG_TBLEND_FILTER
929 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
931 AVFilterContext *ctx = inlink->dst;
932 BlendContext *s = ctx->priv;
933 AVFilterLink *outlink = ctx->outputs[0];
938 if (ctx->is_disabled)
939 out = av_frame_clone(frame);
941 out = blend_frame(ctx, frame, s->prev_frame);
942 av_frame_free(&s->prev_frame);
943 s->prev_frame = frame;
944 return ff_filter_frame(outlink, out);
946 s->prev_frame = frame;
950 #define tblend_options blend_options
951 AVFILTER_DEFINE_CLASS(tblend);
953 static const AVFilterPad tblend_inputs[] = {
956 .type = AVMEDIA_TYPE_VIDEO,
957 .filter_frame = tblend_filter_frame,
962 static const AVFilterPad tblend_outputs[] = {
965 .type = AVMEDIA_TYPE_VIDEO,
966 .config_props = config_output,
971 const AVFilter ff_vf_tblend = {
973 .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
974 .priv_size = sizeof(BlendContext),
975 .priv_class = &tblend_class,
976 .query_formats = query_formats,
979 .inputs = tblend_inputs,
980 .outputs = tblend_outputs,
981 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
982 .process_command = process_command,