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/eval.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixfmt.h"
26 #include "bufferqueue.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 COMMON_OPTIONS \
64 { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
65 { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
66 { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
67 { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
68 { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
69 { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
70 { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
71 { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
72 { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
73 { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
74 { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
75 { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
76 { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
77 { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
78 { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
79 { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
80 { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
81 { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
82 { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },\
83 { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
84 { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
85 { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
86 { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
87 { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },\
88 { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
89 { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
90 { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
91 { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
92 { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
93 { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
94 { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
95 { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
96 { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
97 { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
98 { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
99 { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
100 { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
101 { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
102 { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
103 { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
104 { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
105 { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
106 { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
107 { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
108 { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
109 { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
110 { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
111 { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
112 { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
113 { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
115 #define OFFSET(x) offsetof(BlendContext, x)
116 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
118 static const AVOption blend_options[] = {
123 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
125 #define COPY(src, depth) \
126 static void blend_copy ## src##_##depth(const uint8_t *top, ptrdiff_t top_linesize, \
127 const uint8_t *bottom, ptrdiff_t bottom_linesize,\
128 uint8_t *dst, ptrdiff_t dst_linesize, \
129 ptrdiff_t width, ptrdiff_t height, \
130 FilterParams *param, double *values, int starty) \
132 av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
133 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 #define DEFINE_BLEND8(name, expr) \
189 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
190 const uint8_t *bottom, ptrdiff_t bottom_linesize, \
191 uint8_t *dst, ptrdiff_t dst_linesize, \
192 ptrdiff_t width, ptrdiff_t height, \
193 FilterParams *param, double *values, int starty) \
195 double opacity = param->opacity; \
198 for (i = 0; i < height; i++) { \
199 for (j = 0; j < width; j++) { \
200 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
202 dst += dst_linesize; \
203 top += top_linesize; \
204 bottom += bottom_linesize; \
208 #define DEFINE_BLEND16(name, expr, depth) \
209 static void blend_## name##_##depth##bit(const uint8_t *_top, ptrdiff_t top_linesize,\
210 const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
211 uint8_t *_dst, ptrdiff_t dst_linesize, \
212 ptrdiff_t width, ptrdiff_t height, \
213 FilterParams *param, double *values, int starty) \
215 const uint16_t *top = (const uint16_t*)_top; \
216 const uint16_t *bottom = (const uint16_t*)_bottom; \
217 uint16_t *dst = (uint16_t*)_dst; \
218 double opacity = param->opacity; \
222 bottom_linesize /= 2; \
224 for (i = 0; i < height; i++) { \
225 for (j = 0; j < width; j++) { \
226 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
228 dst += dst_linesize; \
229 top += top_linesize; \
230 bottom += bottom_linesize; \
237 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
238 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
239 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
240 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
242 DEFINE_BLEND8(addition, FFMIN(255, A + B))
243 DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
244 DEFINE_BLEND8(average, (A + B) / 2)
245 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
246 DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
247 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
248 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
249 DEFINE_BLEND8(extremity, FFABS(255 - A - B))
250 DEFINE_BLEND8(difference, FFABS(A - B))
251 DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
252 DEFINE_BLEND8(screen, SCREEN(1, A, B))
253 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
254 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
255 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
256 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
257 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
258 DEFINE_BLEND8(darken, FFMIN(A, B))
259 DEFINE_BLEND8(lighten, FFMAX(A, B))
260 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
261 DEFINE_BLEND8(dodge, DODGE(A, B))
262 DEFINE_BLEND8(burn, BURN(A, B))
263 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))
264 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
265 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
266 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
267 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
268 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
269 DEFINE_BLEND8(and, A & B)
270 DEFINE_BLEND8(or, A | B)
271 DEFINE_BLEND8(xor, A ^ B)
272 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
273 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
280 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
281 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
282 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
283 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
285 DEFINE_BLEND16(addition, FFMIN(65535, A + B), 16)
286 DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768), 16)
287 DEFINE_BLEND16(average, (A + B) / 2, 16)
288 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 16)
289 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 16)
290 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768), 16)
291 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B), 16)
292 DEFINE_BLEND16(extremity, FFABS(65535 - A - B), 16)
293 DEFINE_BLEND16(difference, FFABS(A - B), 16)
294 DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B), 16)
295 DEFINE_BLEND16(screen, SCREEN(1, A, B), 16)
296 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 16)
297 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 16)
298 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535, 16)
299 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535), 16)
300 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535), 16)
301 DEFINE_BLEND16(darken, FFMIN(A, B), 16)
302 DEFINE_BLEND16(lighten, FFMAX(A, B), 16)
303 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B), 16)
304 DEFINE_BLEND16(dodge, DODGE(A, B), 16)
305 DEFINE_BLEND16(burn, BURN(A, B), 16)
306 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)
307 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535, 16)
308 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)), 16)
309 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535, 16)
310 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))), 16)
311 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))), 16)
312 DEFINE_BLEND16(and, A & B, 16)
313 DEFINE_BLEND16(or, A | B, 16)
314 DEFINE_BLEND16(xor, A ^ B, 16)
315 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B), 16)
316 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)), 16)
323 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 1023))
324 #define SCREEN(x, a, b) (1023 - (x) * ((1023 - (a)) * (1023 - (b)) / 1023))
325 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 1023 - ((1023 - (b)) << 10) / (a)))
326 #define DODGE(a, b) (((a) == 1023) ? (a) : FFMIN(1023, (((b) << 10) / (1023 - (a)))))
328 DEFINE_BLEND16(addition, FFMIN(1023, A + B), 10)
329 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 512, 10), 10)
330 DEFINE_BLEND16(average, (A + B) / 2, 10)
331 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 10)
332 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 10)
333 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 512) * B / 128. + 512, 10), 10)
334 DEFINE_BLEND16(negation, 1023 - FFABS(1023 - A - B), 10)
335 DEFINE_BLEND16(extremity, FFABS(1023 - A - B), 10)
336 DEFINE_BLEND16(difference, FFABS(A - B), 10)
337 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(512 + A - B, 10), 10)
338 DEFINE_BLEND16(screen, SCREEN(1, A, B), 10)
339 DEFINE_BLEND16(overlay, (A < 512) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 10)
340 DEFINE_BLEND16(hardlight, (B < 512) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 10)
341 DEFINE_BLEND16(hardmix, (A < (1023 - B)) ? 0: 1023, 10)
342 DEFINE_BLEND16(heat, (A == 0) ? 0 : 1023 - FFMIN(((1023 - B) * (1023 - B)) / A, 1023), 10)
343 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 1023 - FFMIN(((1023 - A) * (1023 - A)) / B, 1023), 10)
344 DEFINE_BLEND16(darken, FFMIN(A, B), 10)
345 DEFINE_BLEND16(lighten, FFMAX(A, B), 10)
346 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 1023 : 1023 * A / B, 10), 10)
347 DEFINE_BLEND16(dodge, DODGE(A, B), 10)
348 DEFINE_BLEND16(burn, BURN(A, B), 10)
349 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)
350 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 1023, 10)
351 DEFINE_BLEND16(pinlight, (B < 512) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 512)), 10)
352 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 1023, 10)
353 DEFINE_BLEND16(reflect, (B == 1023) ? B : FFMIN(1023, (A * A / (1023 - B))), 10)
354 DEFINE_BLEND16(glow, (A == 1023) ? A : FFMIN(1023, (B * B / (1023 - A))), 10)
355 DEFINE_BLEND16(and, A & B, 10)
356 DEFINE_BLEND16(or, A | B, 10)
357 DEFINE_BLEND16(xor, A ^ B, 10)
358 DEFINE_BLEND16(vividlight, (A < 512) ? BURN(2 * A, B) : DODGE(2 * (A - 512), B), 10)
359 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 512) ? B + 2 * A - 1023 : B + 2 * (A - 512), 10), 10)
366 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 4095))
367 #define SCREEN(x, a, b) (4095 - (x) * ((4095 - (a)) * (4095 - (b)) / 4095))
368 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 4095 - ((4095 - (b)) << 12) / (a)))
369 #define DODGE(a, b) (((a) == 4095) ? (a) : FFMIN(4095, (((b) << 12) / (4095 - (a)))))
371 DEFINE_BLEND16(addition, FFMIN(4095, A + B), 12)
372 DEFINE_BLEND16(grainmerge, (int)av_clip_uintp2(A + B - 2048, 12), 12)
373 DEFINE_BLEND16(average, (A + B) / 2, 12)
374 DEFINE_BLEND16(subtract, FFMAX(0, A - B), 12)
375 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B), 12)
376 DEFINE_BLEND16(multiply128, (int)av_clip_uintp2((A - 2048) * B / 512. + 2048, 12), 12)
377 DEFINE_BLEND16(negation, 4095 - FFABS(4095 - A - B), 12)
378 DEFINE_BLEND16(extremity, FFABS(4095 - A - B), 12)
379 DEFINE_BLEND16(difference, FFABS(A - B), 12)
380 DEFINE_BLEND16(grainextract, (int)av_clip_uintp2(2048 + A - B, 12), 12)
381 DEFINE_BLEND16(screen, SCREEN(1, A, B), 12)
382 DEFINE_BLEND16(overlay, (A < 2048) ? MULTIPLY(2, A, B) : SCREEN(2, A, B), 12)
383 DEFINE_BLEND16(hardlight, (B < 2048) ? MULTIPLY(2, B, A) : SCREEN(2, B, A), 12)
384 DEFINE_BLEND16(hardmix, (A < (4095 - B)) ? 0: 4095, 12)
385 DEFINE_BLEND16(heat, (A == 0) ? 0 : 4095 - FFMIN(((4095 - B) * (4095 - B)) / A, 4095), 12)
386 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 4095 - FFMIN(((4095 - A) * (4095 - A)) / B, 4095), 12)
387 DEFINE_BLEND16(darken, FFMIN(A, B), 12)
388 DEFINE_BLEND16(lighten, FFMAX(A, B), 12)
389 DEFINE_BLEND16(divide, (int)av_clip_uintp2(B == 0 ? 4095 : 4095 * A / B, 12), 12)
390 DEFINE_BLEND16(dodge, DODGE(A, B), 12)
391 DEFINE_BLEND16(burn, BURN(A, B), 12)
392 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)
393 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 4095, 12)
394 DEFINE_BLEND16(pinlight, (B < 2048) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 2048)), 12)
395 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 4095, 12)
396 DEFINE_BLEND16(reflect, (B == 4095) ? B : FFMIN(4095, (A * A / (4095 - B))), 12)
397 DEFINE_BLEND16(glow, (A == 4095) ? A : FFMIN(4095, (B * B / (4095 - A))), 12)
398 DEFINE_BLEND16(and, A & B, 12)
399 DEFINE_BLEND16(or, A | B, 12)
400 DEFINE_BLEND16(xor, A ^ B, 12)
401 DEFINE_BLEND16(vividlight, (A < 2048) ? BURN(2 * A, B) : DODGE(2 * (A - 2048), B), 12)
402 DEFINE_BLEND16(linearlight,(int)av_clip_uintp2((B < 2048) ? B + 2 * A - 4095 : B + 2 * (A - 2048), 12), 12)
404 #define DEFINE_BLEND_EXPR(type, name, div) \
405 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
406 const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
407 uint8_t *_dst, ptrdiff_t dst_linesize, \
408 ptrdiff_t width, ptrdiff_t height, \
409 FilterParams *param, double *values, int starty) \
411 const type *top = (type*)_top; \
412 const type *bottom = (type*)_bottom; \
413 type *dst = (type*)_dst; \
414 AVExpr *e = param->e; \
416 dst_linesize /= div; \
417 top_linesize /= div; \
418 bottom_linesize /= div; \
420 for (y = 0; y < height; y++) { \
421 values[VAR_Y] = y + starty; \
422 for (x = 0; x < width; x++) { \
424 values[VAR_TOP] = values[VAR_A] = top[x]; \
425 values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
426 dst[x] = av_expr_eval(e, values, NULL); \
428 dst += dst_linesize; \
429 top += top_linesize; \
430 bottom += bottom_linesize; \
434 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
435 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
437 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
439 ThreadData *td = arg;
440 int slice_start = (td->h * jobnr ) / nb_jobs;
441 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
442 int height = slice_end - slice_start;
443 const uint8_t *top = td->top->data[td->plane];
444 const uint8_t *bottom = td->bottom->data[td->plane];
445 uint8_t *dst = td->dst->data[td->plane];
446 double values[VAR_VARS_NB];
448 values[VAR_N] = td->inlink->frame_count_out;
449 values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
450 values[VAR_W] = td->w;
451 values[VAR_H] = td->h;
452 values[VAR_SW] = td->w / (double)td->dst->width;
453 values[VAR_SH] = td->h / (double)td->dst->height;
455 td->param->blend(top + slice_start * td->top->linesize[td->plane],
456 td->top->linesize[td->plane],
457 bottom + slice_start * td->bottom->linesize[td->plane],
458 td->bottom->linesize[td->plane],
459 dst + slice_start * td->dst->linesize[td->plane],
460 td->dst->linesize[td->plane],
461 td->w, height, td->param, &values[0], slice_start);
465 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
466 const AVFrame *bottom_buf)
468 BlendContext *s = ctx->priv;
469 AVFilterLink *inlink = ctx->inputs[0];
470 AVFilterLink *outlink = ctx->outputs[0];
474 dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
477 av_frame_copy_props(dst_buf, top_buf);
479 for (plane = 0; plane < s->nb_planes; plane++) {
480 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
481 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
482 int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
483 int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
484 FilterParams *param = &s->params[plane];
485 ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
486 .w = outw, .h = outh, .param = param, .plane = plane,
489 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
493 av_frame_free(&top_buf);
498 static int blend_frame_for_dualinput(FFFrameSync *fs)
500 AVFilterContext *ctx = fs->parent;
501 AVFrame *top_buf, *bottom_buf, *dst_buf;
504 ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
508 return ff_filter_frame(ctx->outputs[0], top_buf);
509 dst_buf = blend_frame(ctx, top_buf, bottom_buf);
510 return ff_filter_frame(ctx->outputs[0], dst_buf);
513 static av_cold int init(AVFilterContext *ctx)
515 BlendContext *s = ctx->priv;
517 s->tblend = !strcmp(ctx->filter->name, "tblend");
519 s->fs.on_event = blend_frame_for_dualinput;
523 static int query_formats(AVFilterContext *ctx)
525 static const enum AVPixelFormat pix_fmts[] = {
526 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
527 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
528 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
529 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
530 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
531 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
532 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
533 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
534 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
535 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
536 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
537 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
541 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
543 return AVERROR(ENOMEM);
544 return ff_set_common_formats(ctx, fmts_list);
547 static av_cold void uninit(AVFilterContext *ctx)
549 BlendContext *s = ctx->priv;
552 ff_framesync_uninit(&s->fs);
553 av_frame_free(&s->prev_frame);
555 for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
556 av_expr_free(s->params[i].e);
559 void ff_blend_init(FilterParams *param, int depth)
563 switch (param->mode) {
564 case BLEND_ADDITION: param->blend = blend_addition_8bit; break;
565 case BLEND_GRAINMERGE: param->blend = blend_grainmerge_8bit; break;
566 case BLEND_AND: param->blend = blend_and_8bit; break;
567 case BLEND_AVERAGE: param->blend = blend_average_8bit; break;
568 case BLEND_BURN: param->blend = blend_burn_8bit; break;
569 case BLEND_DARKEN: param->blend = blend_darken_8bit; break;
570 case BLEND_DIFFERENCE: param->blend = blend_difference_8bit; break;
571 case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_8bit; break;
572 case BLEND_DIVIDE: param->blend = blend_divide_8bit; break;
573 case BLEND_DODGE: param->blend = blend_dodge_8bit; break;
574 case BLEND_EXCLUSION: param->blend = blend_exclusion_8bit; break;
575 case BLEND_EXTREMITY: param->blend = blend_extremity_8bit; break;
576 case BLEND_FREEZE: param->blend = blend_freeze_8bit; break;
577 case BLEND_GLOW: param->blend = blend_glow_8bit; break;
578 case BLEND_HARDLIGHT: param->blend = blend_hardlight_8bit; break;
579 case BLEND_HARDMIX: param->blend = blend_hardmix_8bit; break;
580 case BLEND_HEAT: param->blend = blend_heat_8bit; break;
581 case BLEND_LIGHTEN: param->blend = blend_lighten_8bit; break;
582 case BLEND_LINEARLIGHT:param->blend = blend_linearlight_8bit;break;
583 case BLEND_MULTIPLY: param->blend = blend_multiply_8bit; break;
584 case BLEND_MULTIPLY128:param->blend = blend_multiply128_8bit;break;
585 case BLEND_NEGATION: param->blend = blend_negation_8bit; break;
586 case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop_8 :
587 param->opacity == 0 ? blend_copybottom_8 :
588 blend_normal_8bit; break;
589 case BLEND_OR: param->blend = blend_or_8bit; break;
590 case BLEND_OVERLAY: param->blend = blend_overlay_8bit; break;
591 case BLEND_PHOENIX: param->blend = blend_phoenix_8bit; break;
592 case BLEND_PINLIGHT: param->blend = blend_pinlight_8bit; break;
593 case BLEND_REFLECT: param->blend = blend_reflect_8bit; break;
594 case BLEND_SCREEN: param->blend = blend_screen_8bit; break;
595 case BLEND_SOFTLIGHT: param->blend = blend_softlight_8bit; break;
596 case BLEND_SUBTRACT: param->blend = blend_subtract_8bit; break;
597 case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_8bit; break;
598 case BLEND_XOR: param->blend = blend_xor_8bit; break;
602 switch (param->mode) {
603 case BLEND_ADDITION: param->blend = blend_addition_10bit; break;
604 case BLEND_GRAINMERGE: param->blend = blend_grainmerge_10bit; break;
605 case BLEND_AND: param->blend = blend_and_10bit; break;
606 case BLEND_AVERAGE: param->blend = blend_average_10bit; break;
607 case BLEND_BURN: param->blend = blend_burn_10bit; break;
608 case BLEND_DARKEN: param->blend = blend_darken_10bit; break;
609 case BLEND_DIFFERENCE: param->blend = blend_difference_10bit; break;
610 case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_10bit; break;
611 case BLEND_DIVIDE: param->blend = blend_divide_10bit; break;
612 case BLEND_DODGE: param->blend = blend_dodge_10bit; break;
613 case BLEND_EXCLUSION: param->blend = blend_exclusion_10bit; break;
614 case BLEND_EXTREMITY: param->blend = blend_extremity_10bit; break;
615 case BLEND_FREEZE: param->blend = blend_freeze_10bit; break;
616 case BLEND_GLOW: param->blend = blend_glow_10bit; break;
617 case BLEND_HARDLIGHT: param->blend = blend_hardlight_10bit; break;
618 case BLEND_HARDMIX: param->blend = blend_hardmix_10bit; break;
619 case BLEND_HEAT: param->blend = blend_heat_10bit; break;
620 case BLEND_LIGHTEN: param->blend = blend_lighten_10bit; break;
621 case BLEND_LINEARLIGHT:param->blend = blend_linearlight_10bit;break;
622 case BLEND_MULTIPLY: param->blend = blend_multiply_10bit; break;
623 case BLEND_MULTIPLY128:param->blend = blend_multiply128_10bit;break;
624 case BLEND_NEGATION: param->blend = blend_negation_10bit; break;
625 case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop_16 :
626 param->opacity == 0 ? blend_copybottom_16 :
627 blend_normal_16bit; break;
628 case BLEND_OR: param->blend = blend_or_10bit; break;
629 case BLEND_OVERLAY: param->blend = blend_overlay_10bit; break;
630 case BLEND_PHOENIX: param->blend = blend_phoenix_10bit; break;
631 case BLEND_PINLIGHT: param->blend = blend_pinlight_10bit; break;
632 case BLEND_REFLECT: param->blend = blend_reflect_10bit; break;
633 case BLEND_SCREEN: param->blend = blend_screen_10bit; break;
634 case BLEND_SOFTLIGHT: param->blend = blend_softlight_10bit; break;
635 case BLEND_SUBTRACT: param->blend = blend_subtract_10bit; break;
636 case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_10bit;break;
637 case BLEND_XOR: param->blend = blend_xor_10bit; break;
641 switch (param->mode) {
642 case BLEND_ADDITION: param->blend = blend_addition_12bit; break;
643 case BLEND_GRAINMERGE: param->blend = blend_grainmerge_12bit; break;
644 case BLEND_AND: param->blend = blend_and_12bit; break;
645 case BLEND_AVERAGE: param->blend = blend_average_12bit; break;
646 case BLEND_BURN: param->blend = blend_burn_12bit; break;
647 case BLEND_DARKEN: param->blend = blend_darken_12bit; break;
648 case BLEND_DIFFERENCE: param->blend = blend_difference_12bit; break;
649 case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_12bit; break;
650 case BLEND_DIVIDE: param->blend = blend_divide_12bit; break;
651 case BLEND_DODGE: param->blend = blend_dodge_12bit; break;
652 case BLEND_EXCLUSION: param->blend = blend_exclusion_12bit; break;
653 case BLEND_EXTREMITY: param->blend = blend_extremity_12bit; break;
654 case BLEND_FREEZE: param->blend = blend_freeze_12bit; break;
655 case BLEND_GLOW: param->blend = blend_glow_12bit; break;
656 case BLEND_HARDLIGHT: param->blend = blend_hardlight_12bit; break;
657 case BLEND_HARDMIX: param->blend = blend_hardmix_12bit; break;
658 case BLEND_HEAT: param->blend = blend_heat_12bit; break;
659 case BLEND_LIGHTEN: param->blend = blend_lighten_12bit; break;
660 case BLEND_LINEARLIGHT:param->blend = blend_linearlight_12bit;break;
661 case BLEND_MULTIPLY: param->blend = blend_multiply_12bit; break;
662 case BLEND_MULTIPLY128:param->blend = blend_multiply128_12bit;break;
663 case BLEND_NEGATION: param->blend = blend_negation_12bit; break;
664 case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop_16 :
665 param->opacity == 0 ? blend_copybottom_16 :
666 blend_normal_16bit; break;
667 case BLEND_OR: param->blend = blend_or_12bit; break;
668 case BLEND_OVERLAY: param->blend = blend_overlay_12bit; break;
669 case BLEND_PHOENIX: param->blend = blend_phoenix_12bit; break;
670 case BLEND_PINLIGHT: param->blend = blend_pinlight_12bit; break;
671 case BLEND_REFLECT: param->blend = blend_reflect_12bit; break;
672 case BLEND_SCREEN: param->blend = blend_screen_12bit; break;
673 case BLEND_SOFTLIGHT: param->blend = blend_softlight_12bit; break;
674 case BLEND_SUBTRACT: param->blend = blend_subtract_12bit; break;
675 case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_12bit;break;
676 case BLEND_XOR: param->blend = blend_xor_12bit; break;
680 switch (param->mode) {
681 case BLEND_ADDITION: param->blend = blend_addition_16bit; break;
682 case BLEND_GRAINMERGE: param->blend = blend_grainmerge_16bit; break;
683 case BLEND_AND: param->blend = blend_and_16bit; break;
684 case BLEND_AVERAGE: param->blend = blend_average_16bit; break;
685 case BLEND_BURN: param->blend = blend_burn_16bit; break;
686 case BLEND_DARKEN: param->blend = blend_darken_16bit; break;
687 case BLEND_DIFFERENCE: param->blend = blend_difference_16bit; break;
688 case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_16bit; break;
689 case BLEND_DIVIDE: param->blend = blend_divide_16bit; break;
690 case BLEND_DODGE: param->blend = blend_dodge_16bit; break;
691 case BLEND_EXCLUSION: param->blend = blend_exclusion_16bit; break;
692 case BLEND_EXTREMITY: param->blend = blend_extremity_16bit; break;
693 case BLEND_FREEZE: param->blend = blend_freeze_16bit; break;
694 case BLEND_GLOW: param->blend = blend_glow_16bit; break;
695 case BLEND_HARDLIGHT: param->blend = blend_hardlight_16bit; break;
696 case BLEND_HARDMIX: param->blend = blend_hardmix_16bit; break;
697 case BLEND_HEAT: param->blend = blend_heat_16bit; break;
698 case BLEND_LIGHTEN: param->blend = blend_lighten_16bit; break;
699 case BLEND_LINEARLIGHT:param->blend = blend_linearlight_16bit;break;
700 case BLEND_MULTIPLY: param->blend = blend_multiply_16bit; break;
701 case BLEND_MULTIPLY128:param->blend = blend_multiply128_16bit;break;
702 case BLEND_NEGATION: param->blend = blend_negation_16bit; break;
703 case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop_16 :
704 param->opacity == 0 ? blend_copybottom_16 :
705 blend_normal_16bit; break;
706 case BLEND_OR: param->blend = blend_or_16bit; break;
707 case BLEND_OVERLAY: param->blend = blend_overlay_16bit; break;
708 case BLEND_PHOENIX: param->blend = blend_phoenix_16bit; break;
709 case BLEND_PINLIGHT: param->blend = blend_pinlight_16bit; break;
710 case BLEND_REFLECT: param->blend = blend_reflect_16bit; break;
711 case BLEND_SCREEN: param->blend = blend_screen_16bit; break;
712 case BLEND_SOFTLIGHT: param->blend = blend_softlight_16bit; break;
713 case BLEND_SUBTRACT: param->blend = blend_subtract_16bit; break;
714 case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_16bit;break;
715 case BLEND_XOR: param->blend = blend_xor_16bit; break;
720 if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
721 param->blend = depth > 8 ? blend_copytop_16 : blend_copytop_8;
725 ff_blend_init_x86(param, depth);
728 static int config_output(AVFilterLink *outlink)
730 AVFilterContext *ctx = outlink->src;
731 AVFilterLink *toplink = ctx->inputs[TOP];
732 BlendContext *s = ctx->priv;
733 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
737 AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
739 if (toplink->format != bottomlink->format) {
740 av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
741 return AVERROR(EINVAL);
743 if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
744 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
745 "(size %dx%d) do not match the corresponding "
746 "second input link %s parameters (size %dx%d)\n",
747 ctx->input_pads[TOP].name, toplink->w, toplink->h,
748 ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
749 return AVERROR(EINVAL);
753 outlink->w = toplink->w;
754 outlink->h = toplink->h;
755 outlink->time_base = toplink->time_base;
756 outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
757 outlink->frame_rate = toplink->frame_rate;
759 s->hsub = pix_desc->log2_chroma_w;
760 s->vsub = pix_desc->log2_chroma_h;
762 s->depth = pix_desc->comp[0].depth;
763 s->nb_planes = av_pix_fmt_count_planes(toplink->format);
766 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
769 for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
770 FilterParams *param = &s->params[plane];
772 if (s->all_mode >= 0)
773 param->mode = s->all_mode;
774 if (s->all_opacity < 1)
775 param->opacity = s->all_opacity;
777 ff_blend_init(param, s->depth);
779 if (s->all_expr && !param->expr_str) {
780 param->expr_str = av_strdup(s->all_expr);
781 if (!param->expr_str)
782 return AVERROR(ENOMEM);
784 if (param->expr_str) {
785 ret = av_expr_parse(¶m->e, param->expr_str, var_names,
786 NULL, NULL, NULL, NULL, 0, ctx);
789 param->blend = s->depth > 8 ? blend_expr_16bit : blend_expr_8bit;
793 return s->tblend ? 0 : ff_framesync_configure(&s->fs);
796 #if CONFIG_BLEND_FILTER
798 static int activate(AVFilterContext *ctx)
800 BlendContext *s = ctx->priv;
801 return ff_framesync_activate(&s->fs);
804 static const AVFilterPad blend_inputs[] = {
807 .type = AVMEDIA_TYPE_VIDEO,
810 .type = AVMEDIA_TYPE_VIDEO,
815 static const AVFilterPad blend_outputs[] = {
818 .type = AVMEDIA_TYPE_VIDEO,
819 .config_props = config_output,
824 AVFilter ff_vf_blend = {
826 .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
827 .preinit = blend_framesync_preinit,
830 .priv_size = sizeof(BlendContext),
831 .query_formats = query_formats,
832 .activate = activate,
833 .inputs = blend_inputs,
834 .outputs = blend_outputs,
835 .priv_class = &blend_class,
836 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
841 #if CONFIG_TBLEND_FILTER
843 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
845 AVFilterContext *ctx = inlink->dst;
846 BlendContext *s = ctx->priv;
847 AVFilterLink *outlink = ctx->outputs[0];
852 if (ctx->is_disabled)
853 out = av_frame_clone(frame);
855 out = blend_frame(ctx, frame, s->prev_frame);
856 av_frame_free(&s->prev_frame);
857 s->prev_frame = frame;
858 return ff_filter_frame(outlink, out);
860 s->prev_frame = frame;
864 static const AVOption tblend_options[] = {
869 AVFILTER_DEFINE_CLASS(tblend);
871 static const AVFilterPad tblend_inputs[] = {
874 .type = AVMEDIA_TYPE_VIDEO,
875 .filter_frame = tblend_filter_frame,
880 static const AVFilterPad tblend_outputs[] = {
883 .type = AVMEDIA_TYPE_VIDEO,
884 .config_props = config_output,
889 AVFilter ff_vf_tblend = {
891 .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
892 .priv_size = sizeof(BlendContext),
893 .priv_class = &tblend_class,
894 .query_formats = query_formats,
897 .inputs = tblend_inputs,
898 .outputs = tblend_outputs,
899 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,