forked from FFmpeg/FFmpeg
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathvf_blend.c
472 lines (407 loc) · 20.5 KB
/
vf_blend.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
/*
* Copyright (c) 2013 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config_components.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "avfilter.h"
#include "framesync.h"
#include "internal.h"
#include "vf_blend_init.h"
#include "video.h"
#include "blend.h"
#define TOP 0
#define BOTTOM 1
typedef struct BlendContext {
const AVClass *class;
FFFrameSync fs;
int hsub, vsub; ///< chroma subsampling values
int nb_planes;
char *all_expr;
enum BlendMode all_mode;
double all_opacity;
int depth;
FilterParams params[4];
int tblend;
AVFrame *prev_frame; /* only used with tblend */
} BlendContext;
static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
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 };
typedef struct ThreadData {
const AVFrame *top, *bottom;
AVFrame *dst;
AVFilterLink *inlink;
int plane;
int w, h;
FilterParams *param;
} ThreadData;
#define OFFSET(x) offsetof(BlendContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption blend_options[] = {
{ "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
{ "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
{ "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
{ "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
{ "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, .unit = "mode" },
{ "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, .unit = "mode" },
{ "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
{ "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
{ "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, .unit = "mode" },
{ "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, .unit = "mode" },
{ "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, .unit = "mode" },
{ "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, .unit = "mode" },
{ "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
{ "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
{ "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
{ "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, .unit = "mode" },
{ "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, .unit = "mode" },
{ "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, .unit = "mode" },
{ "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, .unit = "mode" },
{ "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, .unit = "mode" },
{ "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, .unit = "mode" },
{ "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
{ "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, .unit = "mode" },
{ "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, .unit = "mode" },
{ "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, .unit = "mode" },
{ "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, .unit = "mode" },
{ "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, .unit = "mode" },
{ "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, .unit = "mode" },
{ "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, .unit = "mode" },
{ "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, .unit = "mode" },
{ "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, .unit = "mode" },
{ "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, .unit = "mode" },
{ "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, .unit = "mode" },
{ "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, .unit = "mode" },
{ "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, .unit = "mode" },
{ "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, .unit = "mode" },
{ "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, .unit = "mode" },
{ "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, .unit = "mode" },
{ "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
{ "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, .unit = "mode" },
{ "softdifference","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTDIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
{ "geometric", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GEOMETRIC}, 0, 0, FLAGS, .unit = "mode" },
{ "harmonic", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARMONIC}, 0, 0, FLAGS, .unit = "mode" },
{ "bleach", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BLEACH}, 0, 0, FLAGS, .unit = "mode" },
{ "stain", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_STAIN}, 0, 0, FLAGS, .unit = "mode" },
{ "interpolate","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_INTERPOLATE},0, 0, FLAGS, .unit = "mode" },
{ "hardoverlay","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDOVERLAY},0, 0, FLAGS, .unit = "mode" },
{ "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ NULL }
};
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
#define DEFINE_BLEND_EXPR(type, name, div) \
static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
uint8_t *_dst, ptrdiff_t dst_linesize, \
ptrdiff_t width, ptrdiff_t height, \
FilterParams *param, double *values, int starty) \
{ \
const type *top = (const type*)_top; \
const type *bottom = (const type*)_bottom; \
type *dst = (type*)_dst; \
AVExpr *e = param->e; \
int y, x; \
dst_linesize /= div; \
top_linesize /= div; \
bottom_linesize /= div; \
\
for (y = 0; y < height; y++) { \
values[VAR_Y] = y + starty; \
for (x = 0; x < width; x++) { \
values[VAR_X] = x; \
values[VAR_TOP] = values[VAR_A] = top[x]; \
values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
dst[x] = av_expr_eval(e, values, NULL); \
} \
dst += dst_linesize; \
top += top_linesize; \
bottom += bottom_linesize; \
} \
}
DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
DEFINE_BLEND_EXPR(float, 32bit, 4)
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ThreadData *td = arg;
int slice_start = (td->h * jobnr ) / nb_jobs;
int slice_end = (td->h * (jobnr+1)) / nb_jobs;
int height = slice_end - slice_start;
const uint8_t *top = td->top->data[td->plane];
const uint8_t *bottom = td->bottom->data[td->plane];
uint8_t *dst = td->dst->data[td->plane];
double values[VAR_VARS_NB];
values[VAR_N] = td->inlink->frame_count_out;
values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
values[VAR_W] = td->w;
values[VAR_H] = td->h;
values[VAR_SW] = td->w / (double)td->dst->width;
values[VAR_SH] = td->h / (double)td->dst->height;
td->param->blend(top + slice_start * td->top->linesize[td->plane],
td->top->linesize[td->plane],
bottom + slice_start * td->bottom->linesize[td->plane],
td->bottom->linesize[td->plane],
dst + slice_start * td->dst->linesize[td->plane],
td->dst->linesize[td->plane],
td->w, height, td->param, &values[0], slice_start);
return 0;
}
static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
const AVFrame *bottom_buf)
{
BlendContext *s = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *dst_buf;
int plane;
dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!dst_buf)
return top_buf;
if (av_frame_copy_props(dst_buf, top_buf) < 0) {
av_frame_free(&dst_buf);
return top_buf;
}
for (plane = 0; plane < s->nb_planes; plane++) {
int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
FilterParams *param = &s->params[plane];
ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
.w = outw, .h = outh, .param = param, .plane = plane,
.inlink = inlink };
ff_filter_execute(ctx, filter_slice, &td, NULL,
FFMIN(outh, ff_filter_get_nb_threads(ctx)));
}
if (!s->tblend)
av_frame_free(&top_buf);
return dst_buf;
}
static int blend_frame_for_dualinput(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
AVFrame *top_buf, *bottom_buf, *dst_buf;
int ret;
ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
if (ret < 0)
return ret;
if (!bottom_buf)
return ff_filter_frame(ctx->outputs[0], top_buf);
dst_buf = blend_frame(ctx, top_buf, bottom_buf);
return ff_filter_frame(ctx->outputs[0], dst_buf);
}
static av_cold int init(AVFilterContext *ctx)
{
BlendContext *s = ctx->priv;
s->tblend = !strcmp(ctx->filter->name, "tblend");
s->fs.on_event = blend_frame_for_dualinput;
return 0;
}
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_GBRP14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
AV_PIX_FMT_NONE
};
static av_cold void uninit(AVFilterContext *ctx)
{
BlendContext *s = ctx->priv;
int i;
ff_framesync_uninit(&s->fs);
av_frame_free(&s->prev_frame);
for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
av_expr_free(s->params[i].e);
}
static int config_params(AVFilterContext *ctx)
{
BlendContext *s = ctx->priv;
int ret;
for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
FilterParams *param = &s->params[plane];
if (s->all_mode >= 0)
param->mode = s->all_mode;
if (s->all_opacity < 1)
param->opacity = s->all_opacity;
ff_blend_init(param, s->depth);
if (s->all_expr && !param->expr_str) {
param->expr_str = av_strdup(s->all_expr);
if (!param->expr_str)
return AVERROR(ENOMEM);
}
if (param->expr_str) {
ret = av_expr_parse(¶m->e, param->expr_str, var_names,
NULL, NULL, NULL, NULL, 0, ctx);
if (ret < 0)
return ret;
param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
}
}
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *toplink = ctx->inputs[TOP];
BlendContext *s = ctx->priv;
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
int ret;
if (!s->tblend) {
AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
"(size %dx%d) do not match the corresponding "
"second input link %s parameters (size %dx%d)\n",
ctx->input_pads[TOP].name, toplink->w, toplink->h,
ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
return AVERROR(EINVAL);
}
}
outlink->w = toplink->w;
outlink->h = toplink->h;
outlink->time_base = toplink->time_base;
outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
outlink->frame_rate = toplink->frame_rate;
s->hsub = pix_desc->log2_chroma_w;
s->vsub = pix_desc->log2_chroma_h;
s->depth = pix_desc->comp[0].depth;
s->nb_planes = av_pix_fmt_count_planes(toplink->format);
if (!s->tblend)
if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
return ret;
ret = config_params(ctx);
if (ret < 0)
return ret;
if (s->tblend)
return 0;
ret = ff_framesync_configure(&s->fs);
outlink->time_base = s->fs.time_base;
return ret;
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
return config_params(ctx);
}
static const AVFilterPad blend_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
#if CONFIG_BLEND_FILTER
static int activate(AVFilterContext *ctx)
{
BlendContext *s = ctx->priv;
return ff_framesync_activate(&s->fs);
}
static const AVFilterPad blend_inputs[] = {
{
.name = "top",
.type = AVMEDIA_TYPE_VIDEO,
},{
.name = "bottom",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_blend = {
.name = "blend",
.description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
.preinit = blend_framesync_preinit,
.init = init,
.uninit = uninit,
.priv_size = sizeof(BlendContext),
.activate = activate,
FILTER_INPUTS(blend_inputs),
FILTER_OUTPUTS(blend_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.priv_class = &blend_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};
#endif
#if CONFIG_TBLEND_FILTER
static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
BlendContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
if (s->prev_frame) {
AVFrame *out;
if (ctx->is_disabled)
out = av_frame_clone(frame);
else
out = blend_frame(ctx, frame, s->prev_frame);
av_frame_free(&s->prev_frame);
s->prev_frame = frame;
return ff_filter_frame(outlink, out);
}
s->prev_frame = frame;
return 0;
}
AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options);
static const AVFilterPad tblend_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = tblend_filter_frame,
},
};
const AVFilter ff_vf_tblend = {
.name = "tblend",
.description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
.priv_size = sizeof(BlendContext),
.priv_class = &tblend_class,
.init = init,
.uninit = uninit,
FILTER_INPUTS(tblend_inputs),
FILTER_OUTPUTS(blend_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};
#endif