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;
45 FilterParams params[4];
47 AVFrame *prev_frame; /* only used with tblend */
50 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
51 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 };
53 typedef struct ThreadData {
54 const AVFrame *top, *bottom;
62 #define COMMON_OPTIONS \
63 { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
64 { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
65 { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
66 { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
67 { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
68 { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
69 { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
70 { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
71 { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
72 { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
73 { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
74 { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
75 { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
76 { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
77 { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
78 { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
79 { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
80 { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
81 { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },\
82 { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
83 { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
84 { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
85 { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
86 { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },\
87 { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
88 { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
89 { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
90 { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
91 { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
92 { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
93 { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
94 { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
95 { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
96 { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
97 { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
98 { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
99 { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
100 { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
101 { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
102 { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
103 { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
104 { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
105 { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
106 { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
107 { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
108 { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
109 { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
110 { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
111 { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
112 { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
114 #define OFFSET(x) offsetof(BlendContext, x)
115 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
117 static const AVOption blend_options[] = {
122 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
125 static void blend_copy ## src(const uint8_t *top, ptrdiff_t top_linesize, \
126 const uint8_t *bottom, ptrdiff_t bottom_linesize,\
127 uint8_t *dst, ptrdiff_t dst_linesize, \
128 ptrdiff_t width, ptrdiff_t height, \
129 FilterParams *param, double *values, int starty) \
131 av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
140 static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
141 const uint8_t *bottom, ptrdiff_t bottom_linesize,
142 uint8_t *dst, ptrdiff_t dst_linesize,
143 ptrdiff_t width, ptrdiff_t height,
144 FilterParams *param, double *values, int starty)
146 const double opacity = param->opacity;
149 for (i = 0; i < height; i++) {
150 for (j = 0; j < width; j++) {
151 dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
155 bottom += bottom_linesize;
159 static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
160 const uint8_t *_bottom, ptrdiff_t bottom_linesize,
161 uint8_t *_dst, ptrdiff_t dst_linesize,
162 ptrdiff_t width, ptrdiff_t height,
163 FilterParams *param, double *values, int starty)
165 const uint16_t *top = (uint16_t*)_top;
166 const uint16_t *bottom = (uint16_t*)_bottom;
167 uint16_t *dst = (uint16_t*)_dst;
168 const double opacity = param->opacity;
172 bottom_linesize /= 2;
174 for (i = 0; i < height; i++) {
175 for (j = 0; j < width; j++) {
176 dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
180 bottom += bottom_linesize;
184 #define DEFINE_BLEND8(name, expr) \
185 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
186 const uint8_t *bottom, ptrdiff_t bottom_linesize, \
187 uint8_t *dst, ptrdiff_t dst_linesize, \
188 ptrdiff_t width, ptrdiff_t height, \
189 FilterParams *param, double *values, int starty) \
191 double opacity = param->opacity; \
194 for (i = 0; i < height; i++) { \
195 for (j = 0; j < width; j++) { \
196 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
198 dst += dst_linesize; \
199 top += top_linesize; \
200 bottom += bottom_linesize; \
204 #define DEFINE_BLEND16(name, expr) \
205 static void blend_## name##_16bit(const uint8_t *_top, ptrdiff_t top_linesize, \
206 const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
207 uint8_t *_dst, ptrdiff_t dst_linesize, \
208 ptrdiff_t width, ptrdiff_t height, \
209 FilterParams *param, double *values, int starty) \
211 const uint16_t *top = (uint16_t*)_top; \
212 const uint16_t *bottom = (uint16_t*)_bottom; \
213 uint16_t *dst = (uint16_t*)_dst; \
214 double opacity = param->opacity; \
218 bottom_linesize /= 2; \
220 for (i = 0; i < height; i++) { \
221 for (j = 0; j < width; j++) { \
222 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
224 dst += dst_linesize; \
225 top += top_linesize; \
226 bottom += bottom_linesize; \
233 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
234 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
235 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
236 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
238 DEFINE_BLEND8(addition, FFMIN(255, A + B))
239 DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
240 DEFINE_BLEND8(average, (A + B) / 2)
241 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
242 DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
243 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
244 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
245 DEFINE_BLEND8(extremity, FFABS(255 - A - B))
246 DEFINE_BLEND8(difference, FFABS(A - B))
247 DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
248 DEFINE_BLEND8(screen, SCREEN(1, A, B))
249 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
250 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
251 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
252 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
253 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
254 DEFINE_BLEND8(darken, FFMIN(A, B))
255 DEFINE_BLEND8(lighten, FFMAX(A, B))
256 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
257 DEFINE_BLEND8(dodge, DODGE(A, B))
258 DEFINE_BLEND8(burn, BURN(A, B))
259 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))
260 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
261 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
262 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
263 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
264 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
265 DEFINE_BLEND8(and, A & B)
266 DEFINE_BLEND8(or, A | B)
267 DEFINE_BLEND8(xor, A ^ B)
268 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
269 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
276 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
277 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
278 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
279 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
281 DEFINE_BLEND16(addition, FFMIN(65535, A + B))
282 DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768))
283 DEFINE_BLEND16(average, (A + B) / 2)
284 DEFINE_BLEND16(subtract, FFMAX(0, A - B))
285 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
286 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768))
287 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
288 DEFINE_BLEND16(extremity, FFABS(65535 - A - B))
289 DEFINE_BLEND16(difference, FFABS(A - B))
290 DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B))
291 DEFINE_BLEND16(screen, SCREEN(1, A, B))
292 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
293 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
294 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535)
295 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535))
296 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535))
297 DEFINE_BLEND16(darken, FFMIN(A, B))
298 DEFINE_BLEND16(lighten, FFMAX(A, B))
299 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B))
300 DEFINE_BLEND16(dodge, DODGE(A, B))
301 DEFINE_BLEND16(burn, BURN(A, B))
302 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))
303 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535)
304 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)))
305 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535)
306 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))))
307 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))))
308 DEFINE_BLEND16(and, A & B)
309 DEFINE_BLEND16(or, A | B)
310 DEFINE_BLEND16(xor, A ^ B)
311 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B))
312 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)))
314 #define DEFINE_BLEND_EXPR(type, name, div) \
315 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
316 const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
317 uint8_t *_dst, ptrdiff_t dst_linesize, \
318 ptrdiff_t width, ptrdiff_t height, \
319 FilterParams *param, double *values, int starty) \
321 const type *top = (type*)_top; \
322 const type *bottom = (type*)_bottom; \
323 type *dst = (type*)_dst; \
324 AVExpr *e = param->e; \
326 dst_linesize /= div; \
327 top_linesize /= div; \
328 bottom_linesize /= div; \
330 for (y = 0; y < height; y++) { \
331 values[VAR_Y] = y + starty; \
332 for (x = 0; x < width; x++) { \
334 values[VAR_TOP] = values[VAR_A] = top[x]; \
335 values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
336 dst[x] = av_expr_eval(e, values, NULL); \
338 dst += dst_linesize; \
339 top += top_linesize; \
340 bottom += bottom_linesize; \
344 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
345 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
347 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
349 ThreadData *td = arg;
350 int slice_start = (td->h * jobnr ) / nb_jobs;
351 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
352 int height = slice_end - slice_start;
353 const uint8_t *top = td->top->data[td->plane];
354 const uint8_t *bottom = td->bottom->data[td->plane];
355 uint8_t *dst = td->dst->data[td->plane];
356 double values[VAR_VARS_NB];
358 values[VAR_N] = td->inlink->frame_count_out;
359 values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
360 values[VAR_W] = td->w;
361 values[VAR_H] = td->h;
362 values[VAR_SW] = td->w / (double)td->dst->width;
363 values[VAR_SH] = td->h / (double)td->dst->height;
365 td->param->blend(top + slice_start * td->top->linesize[td->plane],
366 td->top->linesize[td->plane],
367 bottom + slice_start * td->bottom->linesize[td->plane],
368 td->bottom->linesize[td->plane],
369 dst + slice_start * td->dst->linesize[td->plane],
370 td->dst->linesize[td->plane],
371 td->w, height, td->param, &values[0], slice_start);
375 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
376 const AVFrame *bottom_buf)
378 BlendContext *s = ctx->priv;
379 AVFilterLink *inlink = ctx->inputs[0];
380 AVFilterLink *outlink = ctx->outputs[0];
384 dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
387 av_frame_copy_props(dst_buf, top_buf);
389 for (plane = 0; plane < s->nb_planes; plane++) {
390 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
391 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
392 int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
393 int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
394 FilterParams *param = &s->params[plane];
395 ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
396 .w = outw, .h = outh, .param = param, .plane = plane,
399 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
403 av_frame_free(&top_buf);
408 static int blend_frame_for_dualinput(FFFrameSync *fs)
410 AVFilterContext *ctx = fs->parent;
411 AVFrame *top_buf, *bottom_buf, *dst_buf;
414 ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
418 return ff_filter_frame(ctx->outputs[0], top_buf);
419 dst_buf = blend_frame(ctx, top_buf, bottom_buf);
420 return ff_filter_frame(ctx->outputs[0], dst_buf);
423 static av_cold int init(AVFilterContext *ctx)
425 BlendContext *s = ctx->priv;
427 s->tblend = !strcmp(ctx->filter->name, "tblend");
429 s->fs.on_event = blend_frame_for_dualinput;
433 static int query_formats(AVFilterContext *ctx)
435 static const enum AVPixelFormat pix_fmts[] = {
436 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
437 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
438 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
439 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
440 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
441 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
442 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
446 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
448 return AVERROR(ENOMEM);
449 return ff_set_common_formats(ctx, fmts_list);
452 static av_cold void uninit(AVFilterContext *ctx)
454 BlendContext *s = ctx->priv;
457 ff_framesync_uninit(&s->fs);
458 av_frame_free(&s->prev_frame);
460 for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
461 av_expr_free(s->params[i].e);
464 void ff_blend_init(FilterParams *param, int is_16bit)
466 switch (param->mode) {
467 case BLEND_ADDITION: param->blend = is_16bit ? blend_addition_16bit : blend_addition_8bit; break;
468 case BLEND_GRAINMERGE: param->blend = is_16bit ? blend_grainmerge_16bit : blend_grainmerge_8bit; break;
469 case BLEND_AND: param->blend = is_16bit ? blend_and_16bit : blend_and_8bit; break;
470 case BLEND_AVERAGE: param->blend = is_16bit ? blend_average_16bit : blend_average_8bit; break;
471 case BLEND_BURN: param->blend = is_16bit ? blend_burn_16bit : blend_burn_8bit; break;
472 case BLEND_DARKEN: param->blend = is_16bit ? blend_darken_16bit : blend_darken_8bit; break;
473 case BLEND_DIFFERENCE: param->blend = is_16bit ? blend_difference_16bit : blend_difference_8bit; break;
474 case BLEND_GRAINEXTRACT: param->blend = is_16bit ? blend_grainextract_16bit: blend_grainextract_8bit; break;
475 case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
476 case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
477 case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
478 case BLEND_EXTREMITY: param->blend = is_16bit ? blend_extremity_16bit : blend_extremity_8bit; break;
479 case BLEND_FREEZE: param->blend = is_16bit ? blend_freeze_16bit : blend_freeze_8bit; break;
480 case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
481 case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;
482 case BLEND_HARDMIX: param->blend = is_16bit ? blend_hardmix_16bit : blend_hardmix_8bit; break;
483 case BLEND_HEAT: param->blend = is_16bit ? blend_heat_16bit : blend_heat_8bit; break;
484 case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
485 case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
486 case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
487 case BLEND_MULTIPLY128:param->blend = is_16bit ? blend_multiply128_16bit: blend_multiply128_8bit;break;
488 case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
489 case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop :
490 param->opacity == 0 ? blend_copybottom :
491 is_16bit ? blend_normal_16bit : blend_normal_8bit; break;
492 case BLEND_OR: param->blend = is_16bit ? blend_or_16bit : blend_or_8bit; break;
493 case BLEND_OVERLAY: param->blend = is_16bit ? blend_overlay_16bit : blend_overlay_8bit; break;
494 case BLEND_PHOENIX: param->blend = is_16bit ? blend_phoenix_16bit : blend_phoenix_8bit; break;
495 case BLEND_PINLIGHT: param->blend = is_16bit ? blend_pinlight_16bit : blend_pinlight_8bit; break;
496 case BLEND_REFLECT: param->blend = is_16bit ? blend_reflect_16bit : blend_reflect_8bit; break;
497 case BLEND_SCREEN: param->blend = is_16bit ? blend_screen_16bit : blend_screen_8bit; break;
498 case BLEND_SOFTLIGHT: param->blend = is_16bit ? blend_softlight_16bit : blend_softlight_8bit; break;
499 case BLEND_SUBTRACT: param->blend = is_16bit ? blend_subtract_16bit : blend_subtract_8bit; break;
500 case BLEND_VIVIDLIGHT: param->blend = is_16bit ? blend_vividlight_16bit : blend_vividlight_8bit; break;
501 case BLEND_XOR: param->blend = is_16bit ? blend_xor_16bit : blend_xor_8bit; break;
504 if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
505 param->blend = blend_copytop;
509 ff_blend_init_x86(param, is_16bit);
512 static int config_output(AVFilterLink *outlink)
514 AVFilterContext *ctx = outlink->src;
515 AVFilterLink *toplink = ctx->inputs[TOP];
516 BlendContext *s = ctx->priv;
517 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
518 int ret, plane, is_16bit;
521 AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
523 if (toplink->format != bottomlink->format) {
524 av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
525 return AVERROR(EINVAL);
527 if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
528 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
529 "(size %dx%d) do not match the corresponding "
530 "second input link %s parameters (size %dx%d)\n",
531 ctx->input_pads[TOP].name, toplink->w, toplink->h,
532 ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
533 return AVERROR(EINVAL);
537 outlink->w = toplink->w;
538 outlink->h = toplink->h;
539 outlink->time_base = toplink->time_base;
540 outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
541 outlink->frame_rate = toplink->frame_rate;
543 s->hsub = pix_desc->log2_chroma_w;
544 s->vsub = pix_desc->log2_chroma_h;
546 is_16bit = pix_desc->comp[0].depth == 16;
547 s->nb_planes = av_pix_fmt_count_planes(toplink->format);
550 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
553 for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
554 FilterParams *param = &s->params[plane];
556 if (s->all_mode >= 0)
557 param->mode = s->all_mode;
558 if (s->all_opacity < 1)
559 param->opacity = s->all_opacity;
561 ff_blend_init(param, is_16bit);
563 if (s->all_expr && !param->expr_str) {
564 param->expr_str = av_strdup(s->all_expr);
565 if (!param->expr_str)
566 return AVERROR(ENOMEM);
568 if (param->expr_str) {
569 ret = av_expr_parse(¶m->e, param->expr_str, var_names,
570 NULL, NULL, NULL, NULL, 0, ctx);
573 param->blend = is_16bit? blend_expr_16bit : blend_expr_8bit;
577 return s->tblend ? 0 : ff_framesync_configure(&s->fs);
580 #if CONFIG_BLEND_FILTER
582 static int activate(AVFilterContext *ctx)
584 BlendContext *s = ctx->priv;
585 return ff_framesync_activate(&s->fs);
588 static const AVFilterPad blend_inputs[] = {
591 .type = AVMEDIA_TYPE_VIDEO,
594 .type = AVMEDIA_TYPE_VIDEO,
599 static const AVFilterPad blend_outputs[] = {
602 .type = AVMEDIA_TYPE_VIDEO,
603 .config_props = config_output,
608 AVFilter ff_vf_blend = {
610 .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
611 .preinit = blend_framesync_preinit,
614 .priv_size = sizeof(BlendContext),
615 .query_formats = query_formats,
616 .activate = activate,
617 .inputs = blend_inputs,
618 .outputs = blend_outputs,
619 .priv_class = &blend_class,
620 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
625 #if CONFIG_TBLEND_FILTER
627 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
629 AVFilterContext *ctx = inlink->dst;
630 BlendContext *s = ctx->priv;
631 AVFilterLink *outlink = ctx->outputs[0];
636 if (ctx->is_disabled)
637 out = av_frame_clone(frame);
639 out = blend_frame(ctx, frame, s->prev_frame);
640 av_frame_free(&s->prev_frame);
641 s->prev_frame = frame;
642 return ff_filter_frame(outlink, out);
644 s->prev_frame = frame;
648 static const AVOption tblend_options[] = {
653 AVFILTER_DEFINE_CLASS(tblend);
655 static const AVFilterPad tblend_inputs[] = {
658 .type = AVMEDIA_TYPE_VIDEO,
659 .filter_frame = tblend_filter_frame,
664 static const AVFilterPad tblend_outputs[] = {
667 .type = AVMEDIA_TYPE_VIDEO,
668 .config_props = config_output,
673 AVFilter ff_vf_tblend = {
675 .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
676 .priv_size = sizeof(BlendContext),
677 .priv_class = &tblend_class,
678 .query_formats = query_formats,
681 .inputs = tblend_inputs,
682 .outputs = tblend_outputs,
683 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,