FFmpeg
vf_blend.c
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1 /*
2  * Copyright (c) 2013 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
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.
10  *
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.
15  *
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
19  */
20 
21 #include "libavutil/imgutils.h"
22 #include "libavutil/intfloat.h"
23 #include "libavutil/eval.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixfmt.h"
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "framesync.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "blend.h"
32 
33 #define TOP 0
34 #define BOTTOM 1
35 
36 #define DEPTH 8
37 #include "blend_modes.c"
38 
39 #undef DEPTH
40 #define DEPTH 9
41 #include "blend_modes.c"
42 
43 #undef DEPTH
44 #define DEPTH 10
45 #include "blend_modes.c"
46 
47 #undef DEPTH
48 #define DEPTH 12
49 #include "blend_modes.c"
50 
51 #undef DEPTH
52 #define DEPTH 14
53 #include "blend_modes.c"
54 
55 #undef DEPTH
56 #define DEPTH 16
57 #include "blend_modes.c"
58 
59 #undef DEPTH
60 #define DEPTH 32
61 #include "blend_modes.c"
62 
63 typedef struct BlendContext {
64  const AVClass *class;
66  int hsub, vsub; ///< chroma subsampling values
67  int nb_planes;
68  char *all_expr;
70  double all_opacity;
71 
72  int depth;
74  int tblend;
75  AVFrame *prev_frame; /* only used with tblend */
76 } BlendContext;
77 
78 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
80 
81 typedef struct ThreadData {
82  const AVFrame *top, *bottom;
85  int plane;
86  int w, h;
88 } ThreadData;
89 
90 #define OFFSET(x) offsetof(BlendContext, x)
91 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
92 
93 static const AVOption blend_options[] = {
94  { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
95  { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
96  { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
97  { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode" },
98  { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode" },
99  { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },
100  { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
101  { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },
102  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },
103  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },
104  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },
105  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },
106  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },
107  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
108  { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },
109  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },
110  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },
111  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },
112  { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },
113  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },
114  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },
115  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },
116  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },
117  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },
118  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },
119  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },
120  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },
121  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },
122  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },
123  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },
124  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },
125  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },
126  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },
127  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },
128  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },
129  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },
130  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },
131  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },
132  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },
133  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },
134  { "softdifference","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTDIFFERENCE}, 0, 0, FLAGS, "mode" },
135  { "geometric", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GEOMETRIC}, 0, 0, FLAGS, "mode" },
136  { "harmonic", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARMONIC}, 0, 0, FLAGS, "mode" },
137  { "bleach", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BLEACH}, 0, 0, FLAGS, "mode" },
138  { "stain", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_STAIN}, 0, 0, FLAGS, "mode" },
139  { "interpolate","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_INTERPOLATE},0, 0, FLAGS, "mode" },
140  { "hardoverlay","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDOVERLAY},0, 0, FLAGS, "mode" },
141  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
142  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
143  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
144  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
145  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
146  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
147  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
148  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
149  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
150  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
151  { NULL }
152 };
153 
155 
156 #define COPY(src, depth) \
157 static void blend_copy ## src##_##depth(const uint8_t *top, ptrdiff_t top_linesize, \
158  const uint8_t *bottom, ptrdiff_t bottom_linesize,\
159  uint8_t *dst, ptrdiff_t dst_linesize, \
160  ptrdiff_t width, ptrdiff_t height, \
161  FilterParams *param, double *values, int starty) \
162 { \
163  av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
164  width * depth / 8, height); \
165 }
166 
167 COPY(top, 8)
168 COPY(bottom, 8)
169 
170 COPY(top, 16)
171 COPY(bottom, 16)
172 
173 COPY(top, 32)
174 COPY(bottom, 32)
175 
176 #undef COPY
177 
178 #define BLEND_NORMAL(name, type) \
179 static void blend_normal_##name(const uint8_t *_top, ptrdiff_t top_linesize, \
180  const uint8_t *_bottom, ptrdiff_t bottom_linesize,\
181  uint8_t *_dst, ptrdiff_t dst_linesize, \
182  ptrdiff_t width, ptrdiff_t height, \
183  FilterParams *param, double *values, int starty) \
184 { \
185  const type *top = (type*)_top; \
186  const type *bottom = (type*)_bottom; \
187  type *dst = (type*)_dst; \
188  const float opacity = param->opacity; \
189  \
190  dst_linesize /= sizeof(type); \
191  top_linesize /= sizeof(type); \
192  bottom_linesize /= sizeof(type); \
193  \
194  for (int i = 0; i < height; i++) { \
195  for (int j = 0; j < width; j++) { \
196  dst[j] = top[j] * opacity + bottom[j] * (1.f - opacity); \
197  } \
198  dst += dst_linesize; \
199  top += top_linesize; \
200  bottom += bottom_linesize; \
201  } \
202 }
203 
204 BLEND_NORMAL(8bit, uint8_t)
205 BLEND_NORMAL(16bit, uint16_t)
206 BLEND_NORMAL(32bit, float)
207 
208 #define DEFINE_BLEND_EXPR(type, name, div) \
209 static void blend_expr_## name(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) \
214 { \
215  const type *top = (type*)_top; \
216  const type *bottom = (type*)_bottom; \
217  type *dst = (type*)_dst; \
218  AVExpr *e = param->e; \
219  int y, x; \
220  dst_linesize /= div; \
221  top_linesize /= div; \
222  bottom_linesize /= div; \
223  \
224  for (y = 0; y < height; y++) { \
225  values[VAR_Y] = y + starty; \
226  for (x = 0; x < width; x++) { \
227  values[VAR_X] = x; \
228  values[VAR_TOP] = values[VAR_A] = top[x]; \
229  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
230  dst[x] = av_expr_eval(e, values, NULL); \
231  } \
232  dst += dst_linesize; \
233  top += top_linesize; \
234  bottom += bottom_linesize; \
235  } \
236 }
237 
238 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
239 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
240 DEFINE_BLEND_EXPR(float, 32bit, 4)
241 
242 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
243 {
244  ThreadData *td = arg;
245  int slice_start = (td->h * jobnr ) / nb_jobs;
246  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
247  int height = slice_end - slice_start;
248  const uint8_t *top = td->top->data[td->plane];
249  const uint8_t *bottom = td->bottom->data[td->plane];
250  uint8_t *dst = td->dst->data[td->plane];
251  double values[VAR_VARS_NB];
252 
253  values[VAR_N] = td->inlink->frame_count_out;
254  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
255  values[VAR_W] = td->w;
256  values[VAR_H] = td->h;
257  values[VAR_SW] = td->w / (double)td->dst->width;
258  values[VAR_SH] = td->h / (double)td->dst->height;
259 
260  td->param->blend(top + slice_start * td->top->linesize[td->plane],
261  td->top->linesize[td->plane],
262  bottom + slice_start * td->bottom->linesize[td->plane],
263  td->bottom->linesize[td->plane],
264  dst + slice_start * td->dst->linesize[td->plane],
265  td->dst->linesize[td->plane],
266  td->w, height, td->param, &values[0], slice_start);
267  return 0;
268 }
269 
271  const AVFrame *bottom_buf)
272 {
273  BlendContext *s = ctx->priv;
274  AVFilterLink *inlink = ctx->inputs[0];
275  AVFilterLink *outlink = ctx->outputs[0];
276  AVFrame *dst_buf;
277  int plane;
278 
279  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
280  if (!dst_buf)
281  return top_buf;
282  av_frame_copy_props(dst_buf, top_buf);
283 
284  for (plane = 0; plane < s->nb_planes; plane++) {
285  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
286  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
287  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
288  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
289  FilterParams *param = &s->params[plane];
290  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
291  .w = outw, .h = outh, .param = param, .plane = plane,
292  .inlink = inlink };
293 
296  }
297 
298  if (!s->tblend)
299  av_frame_free(&top_buf);
300 
301  return dst_buf;
302 }
303 
305 {
306  AVFilterContext *ctx = fs->parent;
307  AVFrame *top_buf, *bottom_buf, *dst_buf;
308  int ret;
309 
310  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
311  if (ret < 0)
312  return ret;
313  if (!bottom_buf)
314  return ff_filter_frame(ctx->outputs[0], top_buf);
315  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
316  return ff_filter_frame(ctx->outputs[0], dst_buf);
317 }
318 
320 {
321  BlendContext *s = ctx->priv;
322 
323  s->tblend = !strcmp(ctx->filter->name, "tblend");
324 
325  s->fs.on_event = blend_frame_for_dualinput;
326  return 0;
327 }
328 
329 static const enum AVPixelFormat pix_fmts[] = {
348 };
349 
351 {
352  BlendContext *s = ctx->priv;
353  int i;
354 
355  ff_framesync_uninit(&s->fs);
356  av_frame_free(&s->prev_frame);
357 
358  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
359  av_expr_free(s->params[i].e);
360 }
361 
362 #define DEFINE_INIT_BLEND_FUNC(depth, nbits) \
363 static av_cold void init_blend_func_##depth##_##nbits##bit(FilterParams *param) \
364 { \
365  switch (param->mode) { \
366  case BLEND_ADDITION: param->blend = blend_addition_##depth##bit; break; \
367  case BLEND_GRAINMERGE: param->blend = blend_grainmerge_##depth##bit; break; \
368  case BLEND_AND: param->blend = blend_and_##depth##bit; break; \
369  case BLEND_AVERAGE: param->blend = blend_average_##depth##bit; break; \
370  case BLEND_BURN: param->blend = blend_burn_##depth##bit; break; \
371  case BLEND_DARKEN: param->blend = blend_darken_##depth##bit; break; \
372  case BLEND_DIFFERENCE: param->blend = blend_difference_##depth##bit; break; \
373  case BLEND_GRAINEXTRACT: param->blend = blend_grainextract_##depth##bit; break; \
374  case BLEND_DIVIDE: param->blend = blend_divide_##depth##bit; break; \
375  case BLEND_DODGE: param->blend = blend_dodge_##depth##bit; break; \
376  case BLEND_EXCLUSION: param->blend = blend_exclusion_##depth##bit; break; \
377  case BLEND_EXTREMITY: param->blend = blend_extremity_##depth##bit; break; \
378  case BLEND_FREEZE: param->blend = blend_freeze_##depth##bit; break; \
379  case BLEND_GLOW: param->blend = blend_glow_##depth##bit; break; \
380  case BLEND_HARDLIGHT: param->blend = blend_hardlight_##depth##bit; break; \
381  case BLEND_HARDMIX: param->blend = blend_hardmix_##depth##bit; break; \
382  case BLEND_HEAT: param->blend = blend_heat_##depth##bit; break; \
383  case BLEND_LIGHTEN: param->blend = blend_lighten_##depth##bit; break; \
384  case BLEND_LINEARLIGHT: param->blend = blend_linearlight_##depth##bit; break; \
385  case BLEND_MULTIPLY: param->blend = blend_multiply_##depth##bit; break; \
386  case BLEND_MULTIPLY128: param->blend = blend_multiply128_##depth##bit; break; \
387  case BLEND_NEGATION: param->blend = blend_negation_##depth##bit; break; \
388  case BLEND_NORMAL: param->blend = blend_normal_##nbits##bit; break; \
389  case BLEND_OR: param->blend = blend_or_##depth##bit; break; \
390  case BLEND_OVERLAY: param->blend = blend_overlay_##depth##bit; break; \
391  case BLEND_PHOENIX: param->blend = blend_phoenix_##depth##bit; break; \
392  case BLEND_PINLIGHT: param->blend = blend_pinlight_##depth##bit; break; \
393  case BLEND_REFLECT: param->blend = blend_reflect_##depth##bit; break; \
394  case BLEND_SCREEN: param->blend = blend_screen_##depth##bit; break; \
395  case BLEND_SOFTLIGHT: param->blend = blend_softlight_##depth##bit; break; \
396  case BLEND_SUBTRACT: param->blend = blend_subtract_##depth##bit; break; \
397  case BLEND_VIVIDLIGHT: param->blend = blend_vividlight_##depth##bit; break; \
398  case BLEND_XOR: param->blend = blend_xor_##depth##bit; break; \
399  case BLEND_SOFTDIFFERENCE:param->blend=blend_softdifference_##depth##bit;break; \
400  case BLEND_GEOMETRIC: param->blend = blend_geometric_##depth##bit; break; \
401  case BLEND_HARMONIC: param->blend = blend_harmonic_##depth##bit; break; \
402  case BLEND_BLEACH: param->blend = blend_bleach_##depth##bit; break; \
403  case BLEND_STAIN: param->blend = blend_stain_##depth##bit; break; \
404  case BLEND_INTERPOLATE: param->blend = blend_interpolate_##depth##bit; break; \
405  case BLEND_HARDOVERLAY: param->blend = blend_hardoverlay_##depth##bit; break; \
406  } \
407 }
415 
416 void ff_blend_init(FilterParams *param, int depth)
417 {
418  switch (depth) {
419  case 8:
420  init_blend_func_8_8bit(param);
421  break;
422  case 9:
423  init_blend_func_9_16bit(param);
424  break;
425  case 10:
426  init_blend_func_10_16bit(param);
427  break;
428  case 12:
429  init_blend_func_12_16bit(param);
430  break;
431  case 14:
432  init_blend_func_14_16bit(param);
433  break;
434  case 16:
435  init_blend_func_16_16bit(param);
436  break;
437  case 32:
438  init_blend_func_32_32bit(param);
439  break;
440  }
441 
442  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
443  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
444  } else if (param->mode == BLEND_NORMAL) {
445  if (param->opacity == 1)
446  param->blend = depth > 8 ? depth > 16 ? blend_copytop_32 : blend_copytop_16 : blend_copytop_8;
447  else if (param->opacity == 0)
448  param->blend = depth > 8 ? depth > 16 ? blend_copybottom_32 : blend_copybottom_16 : blend_copybottom_8;
449  }
450 
451  if (ARCH_X86)
452  ff_blend_init_x86(param, depth);
453 }
454 
456 {
457  BlendContext *s = ctx->priv;
458  int ret;
459 
460  for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
461  FilterParams *param = &s->params[plane];
462 
463  if (s->all_mode >= 0)
464  param->mode = s->all_mode;
465  if (s->all_opacity < 1)
466  param->opacity = s->all_opacity;
467 
468  ff_blend_init(param, s->depth);
469 
470  if (s->all_expr && !param->expr_str) {
471  param->expr_str = av_strdup(s->all_expr);
472  if (!param->expr_str)
473  return AVERROR(ENOMEM);
474  }
475  if (param->expr_str) {
476  ret = av_expr_parse(&param->e, param->expr_str, var_names,
477  NULL, NULL, NULL, NULL, 0, ctx);
478  if (ret < 0)
479  return ret;
480  param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
481  }
482  }
483 
484  return 0;
485 }
486 
487 static int config_output(AVFilterLink *outlink)
488 {
489  AVFilterContext *ctx = outlink->src;
490  AVFilterLink *toplink = ctx->inputs[TOP];
491  BlendContext *s = ctx->priv;
492  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
493  int ret;
494 
495  if (!s->tblend) {
496  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
497 
498  if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
499  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
500  "(size %dx%d) do not match the corresponding "
501  "second input link %s parameters (size %dx%d)\n",
502  ctx->input_pads[TOP].name, toplink->w, toplink->h,
503  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
504  return AVERROR(EINVAL);
505  }
506  }
507 
508  outlink->w = toplink->w;
509  outlink->h = toplink->h;
510  outlink->time_base = toplink->time_base;
511  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
512  outlink->frame_rate = toplink->frame_rate;
513 
514  s->hsub = pix_desc->log2_chroma_w;
515  s->vsub = pix_desc->log2_chroma_h;
516 
517  s->depth = pix_desc->comp[0].depth;
518  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
519 
520  if (!s->tblend)
521  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
522  return ret;
523 
524  ret = config_params(ctx);
525  if (ret < 0)
526  return ret;
527 
528  if (s->tblend)
529  return 0;
530 
531  ret = ff_framesync_configure(&s->fs);
532  outlink->time_base = s->fs.time_base;
533 
534  return ret;
535 }
536 
537 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
538  char *res, int res_len, int flags)
539 {
540  int ret;
541 
542  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
543  if (ret < 0)
544  return ret;
545 
546  return config_params(ctx);
547 }
548 
549 #if CONFIG_BLEND_FILTER
550 
551 static int activate(AVFilterContext *ctx)
552 {
553  BlendContext *s = ctx->priv;
554  return ff_framesync_activate(&s->fs);
555 }
556 
557 static const AVFilterPad blend_inputs[] = {
558  {
559  .name = "top",
560  .type = AVMEDIA_TYPE_VIDEO,
561  },{
562  .name = "bottom",
563  .type = AVMEDIA_TYPE_VIDEO,
564  },
565 };
566 
567 static const AVFilterPad blend_outputs[] = {
568  {
569  .name = "default",
570  .type = AVMEDIA_TYPE_VIDEO,
571  .config_props = config_output,
572  },
573 };
574 
575 const AVFilter ff_vf_blend = {
576  .name = "blend",
577  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
578  .preinit = blend_framesync_preinit,
579  .init = init,
580  .uninit = uninit,
581  .priv_size = sizeof(BlendContext),
582  .activate = activate,
583  FILTER_INPUTS(blend_inputs),
584  FILTER_OUTPUTS(blend_outputs),
586  .priv_class = &blend_class,
588  .process_command = process_command,
589 };
590 
591 #endif
592 
593 #if CONFIG_TBLEND_FILTER
594 
595 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
596 {
597  AVFilterContext *ctx = inlink->dst;
598  BlendContext *s = ctx->priv;
599  AVFilterLink *outlink = ctx->outputs[0];
600 
601  if (s->prev_frame) {
602  AVFrame *out;
603 
604  if (ctx->is_disabled)
606  else
607  out = blend_frame(ctx, frame, s->prev_frame);
608  av_frame_free(&s->prev_frame);
609  s->prev_frame = frame;
610  return ff_filter_frame(outlink, out);
611  }
612  s->prev_frame = frame;
613  return 0;
614 }
615 
616 AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options);
617 
618 static const AVFilterPad tblend_inputs[] = {
619  {
620  .name = "default",
621  .type = AVMEDIA_TYPE_VIDEO,
622  .filter_frame = tblend_filter_frame,
623  },
624 };
625 
626 static const AVFilterPad tblend_outputs[] = {
627  {
628  .name = "default",
629  .type = AVMEDIA_TYPE_VIDEO,
630  .config_props = config_output,
631  },
632 };
633 
634 const AVFilter ff_vf_tblend = {
635  .name = "tblend",
636  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
637  .priv_size = sizeof(BlendContext),
638  .priv_class = &tblend_class,
639  .init = init,
640  .uninit = uninit,
641  FILTER_INPUTS(tblend_inputs),
642  FILTER_OUTPUTS(tblend_outputs),
645  .process_command = process_command,
646 };
647 
648 #endif
BLEND_GLOW
@ BLEND_GLOW
Definition: blend.h:56
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:98
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:434
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:413
BlendContext::vsub
int vsub
chroma subsampling values
Definition: vf_blend.c:66
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:119
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
BLEND_EXCLUSION
@ BLEND_EXCLUSION
Definition: blend.h:39
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:285
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
blend_modes.c
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
FilterParams::expr_str
char * expr_str
Definition: blend.h:76
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:426
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
AVFrame::width
int width
Definition: frame.h:361
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:433
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:428
AVOption
AVOption.
Definition: opt.h:247
ThreadData::bottom
const AVFrame * bottom
Definition: vf_blend.c:82
OFFSET
#define OFFSET(x)
Definition: vf_blend.c:90
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
FilterParams::e
AVExpr * e
Definition: blend.h:75
BLEND_NEGATION
@ BLEND_NEGATION
Definition: blend.h:43
VAR_W
@ VAR_W
Definition: vf_blend.c:79
ThreadData::w
int w
Definition: vf_blend.c:86
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
var_names
static const char *const var_names[]
Definition: vf_blend.c:78
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
AVFILTER_DEFINE_CLASS_EXT
#define AVFILTER_DEFINE_CLASS_EXT(name, desc, options)
Definition: internal.h:318
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
BLEND_HARMONIC
@ BLEND_HARMONIC
Definition: blend.h:64
intfloat.h
video.h
BLEND_ADDITION
@ BLEND_ADDITION
Definition: blend.h:30
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:429
BLEND_MULTIPLY128
@ BLEND_MULTIPLY128
Definition: blend.h:58
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:371
BLEND_GEOMETRIC
@ BLEND_GEOMETRIC
Definition: blend.h:63
BLEND_BLEACH
@ BLEND_BLEACH
Definition: blend.h:65
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_blend.c:537
BLEND_NB
@ BLEND_NB
Definition: blend.h:69
formats.h
av_expr_parse
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:685
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:58
BLEND_DIVIDE
@ BLEND_DIVIDE
Definition: blend.h:37
BLEND_PHOENIX
@ BLEND_PHOENIX
Definition: blend.h:46
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2604
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:425
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:409
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:407
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:435
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:389
config_params
static int config_params(AVFilterContext *ctx)
Definition: vf_blend.c:455
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:375
BLEND_AND
@ BLEND_AND
Definition: blend.h:31
BlendContext::params
FilterParams params[4]
Definition: vf_blend.c:73
VAR_N
@ VAR_N
Definition: vf_blend.c:79
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
DEFINE_BLEND_EXPR
#define DEFINE_BLEND_EXPR(type, name, div)
Definition: vf_blend.c:208
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_blend.c:329
blend_options
static const AVOption blend_options[]
Definition: vf_blend.c:93
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
BLEND_SOFTLIGHT
@ BLEND_SOFTLIGHT
Definition: blend.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:394
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:403
VAR_A
@ VAR_A
Definition: vf_blend.c:79
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:411
ThreadData::plane
int plane
Definition: vf_blend.c:85
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_blend.c:242
s
#define s(width, name)
Definition: cbs_vp9.c:257
BLEND_OR
@ BLEND_OR
Definition: blend.h:44
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:412
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
BLEND_SCREEN
@ BLEND_SCREEN
Definition: blend.h:49
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:404
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
VAR_SH
@ VAR_SH
Definition: vf_blend.c:79
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2041
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:432
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:388
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:402
ctx
AVFormatContext * ctx
Definition: movenc.c:48
VAR_H
@ VAR_H
Definition: vf_blend.c:79
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:424
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_PIX_FMT_GRAYF32
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:423
BLEND_EXTREMITY
@ BLEND_EXTREMITY
Definition: blend.h:61
NAN
#define NAN
Definition: mathematics.h:64
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
ThreadData::h
int h
Definition: vf_blend.c:86
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:372
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:83
BLEND_PINLIGHT
@ BLEND_PINLIGHT
Definition: blend.h:47
FilterParams::mode
enum BlendMode mode
Definition: blend.h:73
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:410
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
BLEND_MULTIPLY
@ BLEND_MULTIPLY
Definition: blend.h:42
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
BlendMode
BlendMode
Definition: blend.h:27
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
BlendContext::depth
int depth
Definition: vf_blend.c:72
activate
filter_frame For filters that do not use the activate() callback
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:393
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:319
ff_blend_init_x86
void ff_blend_init_x86(FilterParams *param, int depth)
Definition: vf_blend_init.c:103
DEFINE_INIT_BLEND_FUNC
#define DEFINE_INIT_BLEND_FUNC(depth, nbits)
Definition: vf_blend.c:362
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:392
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:406
BLEND_SUBTRACT
@ BLEND_SUBTRACT
Definition: blend.h:51
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_blend.c:79
BLEND_FREEZE
@ BLEND_FREEZE
Definition: blend.h:60
FilterParams
filter data
Definition: mlp.h:75
BLEND_LIGHTEN
@ BLEND_LIGHTEN
Definition: blend.h:41
BLEND_HEAT
@ BLEND_HEAT
Definition: blend.h:59
eval.h
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:353
VAR_X
@ VAR_X
Definition: vf_blend.c:79
VAR_T
@ VAR_T
Definition: vf_blend.c:79
BlendContext::prev_frame
AVFrame * prev_frame
Definition: vf_blend.c:75
COPY
#define COPY(src, depth)
Definition: vf_blend.c:156
AV_PIX_FMT_GBRPF32
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:420
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:396
BLEND_DODGE
@ BLEND_DODGE
Definition: blend.h:38
BlendContext::all_expr
char * all_expr
Definition: vf_blend.c:68
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
BlendContext::tblend
int tblend
Definition: vf_blend.c:74
BlendContext
Definition: vf_blend.c:63
ff_vf_tblend
const AVFilter ff_vf_tblend
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:398
BlendContext::hsub
int hsub
Definition: vf_blend.c:66
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
height
#define height
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:430
ThreadData::param
FilterParams * param
Definition: vf_blend.c:87
BLEND_INTERPOLATE
@ BLEND_INTERPOLATE
Definition: blend.h:67
internal.h
BLEND_HARDLIGHT
@ BLEND_HARDLIGHT
Definition: blend.h:40
BlendContext::all_mode
enum BlendMode all_mode
Definition: vf_blend.c:69
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
VAR_SW
@ VAR_SW
Definition: vf_blend.c:79
ff_vf_blend
const AVFilter ff_vf_blend
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:408
BlendContext::fs
FFFrameSync fs
Definition: vf_blend.c:65
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:803
VAR_TOP
@ VAR_TOP
Definition: vf_blend.c:79
blend.h
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
BLEND_STAIN
@ BLEND_STAIN
Definition: blend.h:66
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
BLEND_SOFTDIFFERENCE
@ BLEND_SOFTDIFFERENCE
Definition: blend.h:62
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
VAR_BOTTOM
@ VAR_BOTTOM
Definition: vf_blend.c:79
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
BLEND_VIVIDLIGHT
@ BLEND_VIVIDLIGHT
Definition: blend.h:52
TOP
#define TOP
Definition: vf_blend.c:33
BLEND_DIFFERENCE
@ BLEND_DIFFERENCE
Definition: blend.h:35
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:390
BlendContext::nb_planes
int nb_planes
Definition: vf_blend.c:67
ff_blend_init
void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend.c:416
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:487
AVFilter
Filter definition.
Definition: avfilter.h:149
BLEND_HARDMIX
@ BLEND_HARDMIX
Definition: blend.h:54
ret
ret
Definition: filter_design.txt:187
BLEND_GRAINMERGE
@ BLEND_GRAINMERGE
Definition: blend.h:57
VAR_Y
@ VAR_Y
Definition: vf_blend.c:79
VAR_B
@ VAR_B
Definition: vf_blend.c:79
pixfmt.h
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:427
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:395
ThreadData::inlink
AVFilterLink * inlink
Definition: vf_blend.c:84
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:400
AVFrame::height
int height
Definition: frame.h:361
BLEND_HARDOVERLAY
@ BLEND_HARDOVERLAY
Definition: blend.h:68
framesync.h
blend_frame
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:270
mode
mode
Definition: ebur128.h:83
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:431
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
AV_PIX_FMT_GBRAPF32
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:421
values
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return values
Definition: filter_design.txt:263
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
BLEND_XOR
@ BLEND_XOR
Definition: blend.h:53
BlendContext::all_opacity
double all_opacity
Definition: vf_blend.c:70
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:350
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:121
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:279
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
BLEND_DARKEN
@ BLEND_DARKEN
Definition: blend.h:34
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
blend_frame_for_dualinput
static int blend_frame_for_dualinput(FFFrameSync *fs)
Definition: vf_blend.c:304
BLEND_NORMAL
#define BLEND_NORMAL(name, type)
Definition: vf_blend.c:178
BLEND_AVERAGE
@ BLEND_AVERAGE
Definition: blend.h:32
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
FilterParams::opacity
double opacity
Definition: blend.h:74
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
ThreadData::top
const AVFrame * top
Definition: vf_blend.c:82
FilterParams::blend
void(* blend)(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, struct FilterParams *param, double *values, int starty)
Definition: blend.h:77
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:138
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:397
BLEND_BURN
@ BLEND_BURN
Definition: blend.h:33
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:401
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:336
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:371
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:373
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:143
BLEND_REFLECT
@ BLEND_REFLECT
Definition: blend.h:48
BLEND_GRAINEXTRACT
@ BLEND_GRAINEXTRACT
Definition: blend.h:36
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
BOTTOM
#define BOTTOM
Definition: vf_blend.c:34
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
FLAGS
#define FLAGS
Definition: vf_blend.c:91
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
BLEND_LINEARLIGHT
@ BLEND_LINEARLIGHT
Definition: blend.h:55
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:399
BLEND_OVERLAY
@ BLEND_OVERLAY
Definition: blend.h:45