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"
29 #include "dualinput.h"
69 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
70 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 };
72 typedef struct FilterParams {
77 void (*blend)(const uint8_t *top, int top_linesize,
78 const uint8_t *bottom, int bottom_linesize,
79 uint8_t *dst, int dst_linesize,
80 int width, int start, int end,
81 struct FilterParams *param, double *values);
84 typedef struct ThreadData {
85 const AVFrame *top, *bottom;
95 FFDualInputContext dinput;
96 int hsub, vsub; ///< chroma subsampling values
99 enum BlendMode all_mode;
102 FilterParams params[4];
104 AVFrame *prev_frame; /* only used with tblend */
107 #define COMMON_OPTIONS \
108 { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
109 { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
110 { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
111 { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
112 { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
113 { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
114 { "addition128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION128}, 0, 0, FLAGS, "mode" },\
115 { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
116 { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
117 { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
118 { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
119 { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
120 { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE128}, 0, 0, FLAGS, "mode" },\
121 { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
122 { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
123 { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
124 { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
125 { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
126 { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
127 { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
128 { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
129 { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
130 { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
131 { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
132 { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
133 { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
134 { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
135 { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
136 { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
137 { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
138 { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
139 { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
140 { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
141 { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
142 { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
143 { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
144 { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
145 { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
146 { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
147 { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
148 { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
149 { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
150 { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
151 { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
153 #define OFFSET(x) offsetof(BlendContext, x)
154 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
156 static const AVOption blend_options[] = {
158 { "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
159 { "repeatlast", "repeat last bottom frame", OFFSET(dinput.repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
163 AVFILTER_DEFINE_CLASS(blend);
165 static void blend_normal(const uint8_t *top, int top_linesize,
166 const uint8_t *bottom, int bottom_linesize,
167 uint8_t *dst, int dst_linesize,
168 int width, int start, int end,
169 FilterParams *param, double *values)
171 av_image_copy_plane(dst, dst_linesize, top, top_linesize, width, end - start);
174 #define DEFINE_BLEND8(name, expr) \
175 static void blend_## name##_8bit(const uint8_t *top, int top_linesize, \
176 const uint8_t *bottom, int bottom_linesize, \
177 uint8_t *dst, int dst_linesize, \
178 int width, int start, int end, \
179 FilterParams *param, double *values) \
181 double opacity = param->opacity; \
184 for (i = start; i < end; i++) { \
185 for (j = 0; j < width; j++) { \
186 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
188 dst += dst_linesize; \
189 top += top_linesize; \
190 bottom += bottom_linesize; \
194 #define DEFINE_BLEND16(name, expr) \
195 static void blend_## name##_16bit(const uint8_t *_top, int top_linesize, \
196 const uint8_t *_bottom, int bottom_linesize, \
197 uint8_t *_dst, int dst_linesize, \
198 int width, int start, int end, \
199 FilterParams *param, double *values) \
201 const uint16_t *top = (uint16_t*)_top; \
202 const uint16_t *bottom = (uint16_t*)_bottom; \
203 uint16_t *dst = (uint16_t*)_dst; \
204 double opacity = param->opacity; \
208 bottom_linesize /= 2; \
210 for (i = start; i < end; i++) { \
211 for (j = 0; j < width; j++) { \
212 dst[j] = top[j] + ((expr) - top[j]) * opacity; \
214 dst += dst_linesize; \
215 top += top_linesize; \
216 bottom += bottom_linesize; \
223 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
224 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
225 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
226 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
228 DEFINE_BLEND8(addition, FFMIN(255, A + B))
229 DEFINE_BLEND8(addition128, av_clip_uint8(A + B - 128))
230 DEFINE_BLEND8(average, (A + B) / 2)
231 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
232 DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
233 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
234 DEFINE_BLEND8(difference, FFABS(A - B))
235 DEFINE_BLEND8(difference128, av_clip_uint8(128 + A - B))
236 DEFINE_BLEND8(screen, SCREEN(1, A, B))
237 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
238 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
239 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
240 DEFINE_BLEND8(darken, FFMIN(A, B))
241 DEFINE_BLEND8(lighten, FFMAX(A, B))
242 DEFINE_BLEND8(divide, av_clip_uint8(((float)A / ((float)B) * 255)))
243 DEFINE_BLEND8(dodge, DODGE(A, B))
244 DEFINE_BLEND8(burn, BURN(A, B))
245 DEFINE_BLEND8(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - FFABS(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - FFABS(B - 127.5)/255))
246 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
247 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
248 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
249 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
250 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
251 DEFINE_BLEND8(and, A & B)
252 DEFINE_BLEND8(or, A | B)
253 DEFINE_BLEND8(xor, A ^ B)
254 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
255 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
262 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
263 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
264 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
265 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
267 DEFINE_BLEND16(addition, FFMIN(65535, A + B))
268 DEFINE_BLEND16(addition128, av_clip_uint16(A + B - 32768))
269 DEFINE_BLEND16(average, (A + B) / 2)
270 DEFINE_BLEND16(subtract, FFMAX(0, A - B))
271 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
272 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
273 DEFINE_BLEND16(difference, FFABS(A - B))
274 DEFINE_BLEND16(difference128, av_clip_uint16(32768 + A - B))
275 DEFINE_BLEND16(screen, SCREEN(1, A, B))
276 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
277 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
278 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535)
279 DEFINE_BLEND16(darken, FFMIN(A, B))
280 DEFINE_BLEND16(lighten, FFMAX(A, B))
281 DEFINE_BLEND16(divide, av_clip_uint16(((float)A / ((float)B) * 65535)))
282 DEFINE_BLEND16(dodge, DODGE(A, B))
283 DEFINE_BLEND16(burn, BURN(A, B))
284 DEFINE_BLEND16(softlight, (A > 32767) ? B + (65535 - B) * (A - 32767.5) / 32767.5 * (0.5 - FFABS(B - 32767.5) / 65535): B - B * ((32767.5 - A) / 32767.5) * (0.5 - FFABS(B - 32767.5)/65535))
285 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535)
286 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)))
287 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535)
288 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))))
289 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))))
290 DEFINE_BLEND16(and, A & B)
291 DEFINE_BLEND16(or, A | B)
292 DEFINE_BLEND16(xor, A ^ B)
293 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B))
294 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)))
296 #define DEFINE_BLEND_EXPR(type, name, div) \
297 static void blend_expr_## name(const uint8_t *_top, int top_linesize, \
298 const uint8_t *_bottom, int bottom_linesize, \
299 uint8_t *_dst, int dst_linesize, \
300 int width, int start, int end, \
301 FilterParams *param, double *values) \
303 const type *top = (type*)_top; \
304 const type *bottom = (type*)_bottom; \
305 type *dst = (type*)_dst; \
306 AVExpr *e = param->e; \
308 dst_linesize /= div; \
309 top_linesize /= div; \
310 bottom_linesize /= div; \
312 for (y = start; y < end; y++) { \
314 for (x = 0; x < width; x++) { \
316 values[VAR_TOP] = values[VAR_A] = top[x]; \
317 values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
318 dst[x] = av_expr_eval(e, values, NULL); \
320 dst += dst_linesize; \
321 top += top_linesize; \
322 bottom += bottom_linesize; \
326 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
327 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
329 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
331 ThreadData *td = arg;
332 int slice_start = (td->h * jobnr ) / nb_jobs;
333 int slice_end = (td->h * (jobnr+1)) / nb_jobs;
334 const uint8_t *top = td->top->data[td->plane];
335 const uint8_t *bottom = td->bottom->data[td->plane];
336 uint8_t *dst = td->dst->data[td->plane];
337 double values[VAR_VARS_NB];
339 values[VAR_N] = td->inlink->frame_count;
340 values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
341 values[VAR_W] = td->w;
342 values[VAR_H] = td->h;
343 values[VAR_SW] = td->w / (double)td->dst->width;
344 values[VAR_SH] = td->h / (double)td->dst->height;
346 td->param->blend(top + slice_start * td->top->linesize[td->plane],
347 td->top->linesize[td->plane],
348 bottom + slice_start * td->bottom->linesize[td->plane],
349 td->bottom->linesize[td->plane],
350 dst + slice_start * td->dst->linesize[td->plane],
351 td->dst->linesize[td->plane],
352 td->w, slice_start, slice_end, td->param, &values[0]);
356 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
357 const AVFrame *bottom_buf)
359 BlendContext *s = ctx->priv;
360 AVFilterLink *inlink = ctx->inputs[0];
361 AVFilterLink *outlink = ctx->outputs[0];
365 dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
368 av_frame_copy_props(dst_buf, top_buf);
370 for (plane = 0; plane < s->nb_planes; plane++) {
371 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
372 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
373 int outw = FF_CEIL_RSHIFT(dst_buf->width, hsub);
374 int outh = FF_CEIL_RSHIFT(dst_buf->height, vsub);
375 FilterParams *param = &s->params[plane];
376 ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
377 .w = outw, .h = outh, .param = param, .plane = plane,
380 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ctx->graph->nb_threads));
384 av_frame_free(&top_buf);
389 static av_cold int init(AVFilterContext *ctx)
391 BlendContext *s = ctx->priv;
393 s->tblend = !strcmp(ctx->filter->name, "tblend");
395 s->dinput.process = blend_frame;
399 static int query_formats(AVFilterContext *ctx)
401 static const enum AVPixelFormat pix_fmts[] = {
402 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
403 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
404 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
405 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
406 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
407 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
408 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GRAY16,
412 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
414 return AVERROR(ENOMEM);
415 return ff_set_common_formats(ctx, fmts_list);
418 static av_cold void uninit(AVFilterContext *ctx)
420 BlendContext *s = ctx->priv;
423 ff_dualinput_uninit(&s->dinput);
424 av_frame_free(&s->prev_frame);
426 for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
427 av_expr_free(s->params[i].e);
430 static int config_output(AVFilterLink *outlink)
432 AVFilterContext *ctx = outlink->src;
433 AVFilterLink *toplink = ctx->inputs[TOP];
434 BlendContext *s = ctx->priv;
435 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
436 int ret, plane, is_16bit;
439 AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
441 if (toplink->format != bottomlink->format) {
442 av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
443 return AVERROR(EINVAL);
445 if (toplink->w != bottomlink->w ||
446 toplink->h != bottomlink->h ||
447 toplink->sample_aspect_ratio.num != bottomlink->sample_aspect_ratio.num ||
448 toplink->sample_aspect_ratio.den != bottomlink->sample_aspect_ratio.den) {
449 av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
450 "(size %dx%d, SAR %d:%d) do not match the corresponding "
451 "second input link %s parameters (%dx%d, SAR %d:%d)\n",
452 ctx->input_pads[TOP].name, toplink->w, toplink->h,
453 toplink->sample_aspect_ratio.num,
454 toplink->sample_aspect_ratio.den,
455 ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h,
456 bottomlink->sample_aspect_ratio.num,
457 bottomlink->sample_aspect_ratio.den);
458 return AVERROR(EINVAL);
462 outlink->w = toplink->w;
463 outlink->h = toplink->h;
464 outlink->time_base = toplink->time_base;
465 outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
466 outlink->frame_rate = toplink->frame_rate;
468 s->hsub = pix_desc->log2_chroma_w;
469 s->vsub = pix_desc->log2_chroma_h;
471 is_16bit = pix_desc->comp[0].depth == 16;
472 s->nb_planes = av_pix_fmt_count_planes(toplink->format);
475 if ((ret = ff_dualinput_init(ctx, &s->dinput)) < 0)
478 for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
479 FilterParams *param = &s->params[plane];
481 if (s->all_mode >= 0)
482 param->mode = s->all_mode;
483 if (s->all_opacity < 1)
484 param->opacity = s->all_opacity;
486 switch (param->mode) {
487 case BLEND_ADDITION: param->blend = is_16bit ? blend_addition_16bit : blend_addition_8bit; break;
488 case BLEND_ADDITION128: param->blend = is_16bit ? blend_addition128_16bit : blend_addition128_8bit; break;
489 case BLEND_AND: param->blend = is_16bit ? blend_and_16bit : blend_and_8bit; break;
490 case BLEND_AVERAGE: param->blend = is_16bit ? blend_average_16bit : blend_average_8bit; break;
491 case BLEND_BURN: param->blend = is_16bit ? blend_burn_16bit : blend_burn_8bit; break;
492 case BLEND_DARKEN: param->blend = is_16bit ? blend_darken_16bit : blend_darken_8bit; break;
493 case BLEND_DIFFERENCE: param->blend = is_16bit ? blend_difference_16bit : blend_difference_8bit; break;
494 case BLEND_DIFFERENCE128: param->blend = is_16bit ? blend_difference128_16bit: blend_difference128_8bit; break;
495 case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
496 case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
497 case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
498 case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
499 case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;
500 case BLEND_HARDMIX: param->blend = is_16bit ? blend_hardmix_16bit : blend_hardmix_8bit; break;
501 case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
502 case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
503 case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
504 case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
505 case BLEND_NORMAL: param->blend = blend_normal; break;
506 case BLEND_OR: param->blend = is_16bit ? blend_or_16bit : blend_or_8bit; break;
507 case BLEND_OVERLAY: param->blend = is_16bit ? blend_overlay_16bit : blend_overlay_8bit; break;
508 case BLEND_PHOENIX: param->blend = is_16bit ? blend_phoenix_16bit : blend_phoenix_8bit; break;
509 case BLEND_PINLIGHT: param->blend = is_16bit ? blend_pinlight_16bit : blend_pinlight_8bit; break;
510 case BLEND_REFLECT: param->blend = is_16bit ? blend_reflect_16bit : blend_reflect_8bit; break;
511 case BLEND_SCREEN: param->blend = is_16bit ? blend_screen_16bit : blend_screen_8bit; break;
512 case BLEND_SOFTLIGHT: param->blend = is_16bit ? blend_softlight_16bit : blend_softlight_8bit; break;
513 case BLEND_SUBTRACT: param->blend = is_16bit ? blend_subtract_16bit : blend_subtract_8bit; break;
514 case BLEND_VIVIDLIGHT: param->blend = is_16bit ? blend_vividlight_16bit : blend_vividlight_8bit; break;
515 case BLEND_XOR: param->blend = is_16bit ? blend_xor_16bit : blend_xor_8bit; break;
518 if (s->all_expr && !param->expr_str) {
519 param->expr_str = av_strdup(s->all_expr);
520 if (!param->expr_str)
521 return AVERROR(ENOMEM);
523 if (param->expr_str) {
524 ret = av_expr_parse(¶m->e, param->expr_str, var_names,
525 NULL, NULL, NULL, NULL, 0, ctx);
528 param->blend = is_16bit? blend_expr_16bit : blend_expr_8bit;
535 #if CONFIG_BLEND_FILTER
537 static int request_frame(AVFilterLink *outlink)
539 BlendContext *s = outlink->src->priv;
540 return ff_dualinput_request_frame(&s->dinput, outlink);
543 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
545 BlendContext *s = inlink->dst->priv;
546 return ff_dualinput_filter_frame(&s->dinput, inlink, buf);
549 static const AVFilterPad blend_inputs[] = {
552 .type = AVMEDIA_TYPE_VIDEO,
553 .filter_frame = filter_frame,
556 .type = AVMEDIA_TYPE_VIDEO,
557 .filter_frame = filter_frame,
562 static const AVFilterPad blend_outputs[] = {
565 .type = AVMEDIA_TYPE_VIDEO,
566 .config_props = config_output,
567 .request_frame = request_frame,
572 AVFilter ff_vf_blend = {
574 .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
577 .priv_size = sizeof(BlendContext),
578 .query_formats = query_formats,
579 .inputs = blend_inputs,
580 .outputs = blend_outputs,
581 .priv_class = &blend_class,
582 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
587 #if CONFIG_TBLEND_FILTER
589 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
591 BlendContext *s = inlink->dst->priv;
592 AVFilterLink *outlink = inlink->dst->outputs[0];
595 AVFrame *out = blend_frame(inlink->dst, frame, s->prev_frame);
596 av_frame_free(&s->prev_frame);
597 s->prev_frame = frame;
598 return ff_filter_frame(outlink, out);
600 s->prev_frame = frame;
604 static const AVOption tblend_options[] = {
609 AVFILTER_DEFINE_CLASS(tblend);
611 static const AVFilterPad tblend_inputs[] = {
614 .type = AVMEDIA_TYPE_VIDEO,
615 .filter_frame = tblend_filter_frame,
620 static const AVFilterPad tblend_outputs[] = {
623 .type = AVMEDIA_TYPE_VIDEO,
624 .config_props = config_output,
629 AVFilter ff_vf_tblend = {
631 .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
632 .priv_size = sizeof(BlendContext),
633 .priv_class = &tblend_class,
634 .query_formats = query_formats,
637 .inputs = tblend_inputs,
638 .outputs = tblend_outputs,
639 .flags = AVFILTER_FLAG_SLICE_THREADS,