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 "config_components.h"
22 
23 #include "libavutil/eval.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixfmt.h"
27 #include "avfilter.h"
28 #include "filters.h"
29 #include "framesync.h"
30 #include "vf_blend_init.h"
31 #include "video.h"
32 #include "blend.h"
33 
34 #define TOP 0
35 #define BOTTOM 1
36 
37 typedef struct BlendContext {
38  const AVClass *class;
39  FFFrameSync fs;
40  int hsub, vsub; ///< chroma subsampling values
41  int nb_planes;
42  char *all_expr;
43  /* enum BlendMode */
44  int all_mode;
45  double all_opacity;
46 
47  int depth;
48  FilterParams params[4];
49  int tblend;
50  AVFrame *prev_frame; /* only used with tblend */
51  int nb_threads;
52 } BlendContext;
53 
54 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
55 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 };
56 
57 typedef struct ThreadData {
58  const AVFrame *top, *bottom;
59  AVFrame *dst;
60  AVFilterLink *inlink;
61  int plane;
62  int w, h;
63  FilterParams *param;
64 } ThreadData;
65 
66 #define OFFSET(x) offsetof(BlendContext, x)
67 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
68 
69 static const AVOption blend_options[] = {
70  { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
71  { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
72  { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
73  { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
74  { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, .unit = "mode" },
75  { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, .unit = "mode" },
76  { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
77  { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
78  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, .unit = "mode" },
79  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, .unit = "mode" },
80  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, .unit = "mode" },
81  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, .unit = "mode" },
82  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
83  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
84  { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
85  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, .unit = "mode" },
86  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, .unit = "mode" },
87  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, .unit = "mode" },
88  { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, .unit = "mode" },
89  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, .unit = "mode" },
90  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, .unit = "mode" },
91  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
92  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, .unit = "mode" },
93  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, .unit = "mode" },
94  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, .unit = "mode" },
95  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, .unit = "mode" },
96  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, .unit = "mode" },
97  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, .unit = "mode" },
98  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, .unit = "mode" },
99  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, .unit = "mode" },
100  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, .unit = "mode" },
101  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, .unit = "mode" },
102  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, .unit = "mode" },
103  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, .unit = "mode" },
104  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, .unit = "mode" },
105  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, .unit = "mode" },
106  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, .unit = "mode" },
107  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, .unit = "mode" },
108  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
109  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, .unit = "mode" },
110  { "softdifference","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTDIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
111  { "geometric", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GEOMETRIC}, 0, 0, FLAGS, .unit = "mode" },
112  { "harmonic", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARMONIC}, 0, 0, FLAGS, .unit = "mode" },
113  { "bleach", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BLEACH}, 0, 0, FLAGS, .unit = "mode" },
114  { "stain", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_STAIN}, 0, 0, FLAGS, .unit = "mode" },
115  { "interpolate","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_INTERPOLATE},0, 0, FLAGS, .unit = "mode" },
116  { "hardoverlay","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDOVERLAY},0, 0, FLAGS, .unit = "mode" },
117  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
118  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
119  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
120  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
121  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
122  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
123  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
124  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
125  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
126  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
127  { NULL }
128 };
129 
130 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
131 
132 #define DEFINE_BLEND_EXPR(type, name, div) \
133 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
134  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
135  uint8_t *_dst, ptrdiff_t dst_linesize, \
136  ptrdiff_t width, ptrdiff_t height, \
137  FilterParams *param, SliceParams *sliceparam) \
138 { \
139  const type *top = (const type*)_top; \
140  const type *bottom = (const type*)_bottom; \
141  double *values = sliceparam->values; \
142  int starty = sliceparam->starty; \
143  type *dst = (type*)_dst; \
144  AVExpr *e = sliceparam->e; \
145  int y, x; \
146  dst_linesize /= div; \
147  top_linesize /= div; \
148  bottom_linesize /= div; \
149  \
150  for (y = 0; y < height; y++) { \
151  values[VAR_Y] = y + starty; \
152  for (x = 0; x < width; x++) { \
153  values[VAR_X] = x; \
154  values[VAR_TOP] = values[VAR_A] = top[x]; \
155  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
156  dst[x] = av_expr_eval(e, values, NULL); \
157  } \
158  dst += dst_linesize; \
159  top += top_linesize; \
160  bottom += bottom_linesize; \
161  } \
162 }
163 
164 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
165 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
166 DEFINE_BLEND_EXPR(float, 32bit, 4)
167 
168 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
169 {
170  ThreadData *td = arg;
171  int slice_start = (td->h * jobnr ) / nb_jobs;
172  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
173  int height = slice_end - slice_start;
174  const uint8_t *top = td->top->data[td->plane];
175  const uint8_t *bottom = td->bottom->data[td->plane];
176  uint8_t *dst = td->dst->data[td->plane];
177  FilterLink *inl = ff_filter_link(td->inlink);
178  double values[VAR_VARS_NB];
179  SliceParams sliceparam = {.values = &values[0], .starty = slice_start, .e = td->param->e ? td->param->e[jobnr] : NULL};
180 
181  values[VAR_N] = inl->frame_count_out;
182  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
183  values[VAR_W] = td->w;
184  values[VAR_H] = td->h;
185  values[VAR_SW] = td->w / (double)td->dst->width;
186  values[VAR_SH] = td->h / (double)td->dst->height;
187 
188  td->param->blend(top + slice_start * td->top->linesize[td->plane],
189  td->top->linesize[td->plane],
190  bottom + slice_start * td->bottom->linesize[td->plane],
191  td->bottom->linesize[td->plane],
192  dst + slice_start * td->dst->linesize[td->plane],
193  td->dst->linesize[td->plane],
194  td->w, height, td->param, &sliceparam);
195  return 0;
196 }
197 
198 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
199  const AVFrame *bottom_buf)
200 {
201  BlendContext *s = ctx->priv;
202  AVFilterLink *inlink = ctx->inputs[0];
203  AVFilterLink *outlink = ctx->outputs[0];
204  AVFrame *dst_buf;
205  int plane;
206 
207  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
208  if (!dst_buf)
209  return top_buf;
210 
211  if (av_frame_copy_props(dst_buf, top_buf) < 0) {
212  av_frame_free(&dst_buf);
213  return top_buf;
214  }
215 
216  for (plane = 0; plane < s->nb_planes; plane++) {
217  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
218  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
219  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
220  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
221  FilterParams *param = &s->params[plane];
222  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
223  .w = outw, .h = outh, .param = param, .plane = plane,
224  .inlink = inlink };
225 
226  ff_filter_execute(ctx, filter_slice, &td, NULL,
227  FFMIN(outh, s->nb_threads));
228  }
229 
230  if (!s->tblend)
231  av_frame_free(&top_buf);
232 
233  return dst_buf;
234 }
235 
236 static int blend_frame_for_dualinput(FFFrameSync *fs)
237 {
238  AVFilterContext *ctx = fs->parent;
239  AVFrame *top_buf, *bottom_buf, *dst_buf;
240  int ret;
241 
242  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
243  if (ret < 0)
244  return ret;
245  if (!bottom_buf)
246  return ff_filter_frame(ctx->outputs[0], top_buf);
247  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
248  return ff_filter_frame(ctx->outputs[0], dst_buf);
249 }
250 
251 static av_cold int init(AVFilterContext *ctx)
252 {
253  BlendContext *s = ctx->priv;
254 
255  s->tblend = !strcmp(ctx->filter->name, "tblend");
256  s->nb_threads = ff_filter_get_nb_threads(ctx);
257 
258  s->fs.on_event = blend_frame_for_dualinput;
259  return 0;
260 }
261 
262 static const enum AVPixelFormat pix_fmts[] = {
263  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
264  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
265  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
266  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
267  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
268  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9,
269  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
270  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
271  AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
272  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
273  AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
274  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
275  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_GBRP14,
276  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
277  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
278  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
279  AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
280  AV_PIX_FMT_NONE
281 };
282 
283 static av_cold void uninit(AVFilterContext *ctx)
284 {
285  BlendContext *s = ctx->priv;
286  int i;
287 
288  ff_framesync_uninit(&s->fs);
289  av_frame_free(&s->prev_frame);
290 
291  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++) {
292  if (s->params[i].e) {
293  for (int j = 0; j < s->nb_threads; j++)
294  av_expr_free(s->params[i].e[j]);
295  av_freep(&s->params[i].e);
296  }
297  }
298 
299 }
300 
301 static int config_params(AVFilterContext *ctx)
302 {
303  BlendContext *s = ctx->priv;
304  int ret;
305 
306  for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
307  FilterParams *param = &s->params[plane];
308 
309  if (s->all_mode >= 0)
310  param->mode = s->all_mode;
311  if (s->all_opacity < 1)
312  param->opacity = s->all_opacity;
313 
314  ff_blend_init(param, s->depth);
315 
316  if (s->all_expr && !param->expr_str) {
317  param->expr_str = av_strdup(s->all_expr);
318  if (!param->expr_str)
319  return AVERROR(ENOMEM);
320  }
321  if (param->expr_str) {
322  if (!param->e) {
323  param->e = av_calloc(s->nb_threads, sizeof(*param->e));
324  if (!param->e)
325  return AVERROR(ENOMEM);
326  }
327  for (int i = 0; i < s->nb_threads; i++) {
328  av_expr_free(param->e[i]);
329  param->e[i] = NULL;
330  ret = av_expr_parse(&param->e[i], param->expr_str, var_names,
331  NULL, NULL, NULL, NULL, 0, ctx);
332  if (ret < 0)
333  return ret;
334  }
335  param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
336  }
337  }
338 
339  return 0;
340 }
341 
342 static int config_output(AVFilterLink *outlink)
343 {
344  FilterLink *outl = ff_filter_link(outlink);
345  AVFilterContext *ctx = outlink->src;
346  AVFilterLink *toplink = ctx->inputs[TOP];
347  FilterLink *tl = ff_filter_link(toplink);
348  BlendContext *s = ctx->priv;
349  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
350  int ret;
351 
352  if (!s->tblend) {
353  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
354 
355  if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
356  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
357  "(size %dx%d) do not match the corresponding "
358  "second input link %s parameters (size %dx%d)\n",
359  ctx->input_pads[TOP].name, toplink->w, toplink->h,
360  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
361  return AVERROR(EINVAL);
362  }
363  }
364 
365  outlink->w = toplink->w;
366  outlink->h = toplink->h;
367  outlink->time_base = toplink->time_base;
368  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
369  outl->frame_rate = tl->frame_rate;
370 
371  s->hsub = pix_desc->log2_chroma_w;
372  s->vsub = pix_desc->log2_chroma_h;
373 
374  s->depth = pix_desc->comp[0].depth;
375  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
376 
377  if (!s->tblend)
378  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
379  return ret;
380 
381  ret = config_params(ctx);
382  if (ret < 0)
383  return ret;
384 
385  if (s->tblend)
386  return 0;
387 
388  ret = ff_framesync_configure(&s->fs);
389  outlink->time_base = s->fs.time_base;
390 
391  return ret;
392 }
393 
394 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
395  char *res, int res_len, int flags)
396 {
397  int ret;
398 
399  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
400  if (ret < 0)
401  return ret;
402 
403  return config_params(ctx);
404 }
405 
406 static const AVFilterPad blend_outputs[] = {
407  {
408  .name = "default",
409  .type = AVMEDIA_TYPE_VIDEO,
410  .config_props = config_output,
411  },
412 };
413 
414 #if CONFIG_BLEND_FILTER
415 
416 static int activate(AVFilterContext *ctx)
417 {
418  BlendContext *s = ctx->priv;
419  return ff_framesync_activate(&s->fs);
420 }
421 
422 static const AVFilterPad blend_inputs[] = {
423  {
424  .name = "top",
425  .type = AVMEDIA_TYPE_VIDEO,
426  },{
427  .name = "bottom",
428  .type = AVMEDIA_TYPE_VIDEO,
429  },
430 };
431 
432 const FFFilter ff_vf_blend = {
433  .p.name = "blend",
434  .p.description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
435  .p.priv_class = &blend_class,
436  .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
437  .preinit = blend_framesync_preinit,
438  .init = init,
439  .uninit = uninit,
440  .priv_size = sizeof(BlendContext),
441  .activate = activate,
442  FILTER_INPUTS(blend_inputs),
443  FILTER_OUTPUTS(blend_outputs),
444  FILTER_PIXFMTS_ARRAY(pix_fmts),
445  .process_command = process_command,
446 };
447 
448 #endif
449 
450 #if CONFIG_TBLEND_FILTER
451 
452 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
453 {
454  AVFilterContext *ctx = inlink->dst;
455  BlendContext *s = ctx->priv;
456  AVFilterLink *outlink = ctx->outputs[0];
457 
458  if (s->prev_frame) {
459  AVFrame *out;
460 
461  if (ctx->is_disabled)
462  out = av_frame_clone(frame);
463  else
464  out = blend_frame(ctx, frame, s->prev_frame);
465  av_frame_free(&s->prev_frame);
466  s->prev_frame = frame;
467  return ff_filter_frame(outlink, out);
468  }
469  s->prev_frame = frame;
470  return 0;
471 }
472 
473 AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options);
474 
475 static const AVFilterPad tblend_inputs[] = {
476  {
477  .name = "default",
478  .type = AVMEDIA_TYPE_VIDEO,
479  .filter_frame = tblend_filter_frame,
480  },
481 };
482 
483 const FFFilter ff_vf_tblend = {
484  .p.name = "tblend",
485  .p.description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
486  .p.priv_class = &tblend_class,
487  .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
488  .priv_size = sizeof(BlendContext),
489  .init = init,
490  .uninit = uninit,
491  FILTER_INPUTS(tblend_inputs),
492  FILTER_OUTPUTS(blend_outputs),
493  FILTER_PIXFMTS_ARRAY(pix_fmts),
494  .process_command = process_command,
495 };
496 
497 #endif
BLEND_GLOW
@ BLEND_GLOW
Definition: blend.h:56
flags
const SwsFlags flags[]
Definition: swscale.c:61
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:118
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:596
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:565
BlendContext::vsub
int vsub
chroma subsampling values
Definition: vf_blend.c:40
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:137
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
BLEND_EXCLUSION
@ BLEND_EXCLUSION
Definition: blend.h:39
ff_vf_tblend
const FFFilter ff_vf_tblend
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
VAR_TOP
@ VAR_TOP
Definition: vf_blend.c:55
VAR_A
@ VAR_A
Definition: vf_blend.c:55
SliceParams::values
double * values
Definition: blend.h:73
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:244
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:301
out
static FILE * out
Definition: movenc.c:55
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1067
VAR_SW
@ VAR_SW
Definition: vf_blend.c:55
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3456
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:82
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:64
AVFILTER_DEFINE_CLASS_EXT
#define AVFILTER_DEFINE_CLASS_EXT(name, desc, options)
Definition: filters.h:470
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:588
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:264
mode
Definition: swscale.c:56
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:427
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:529
AVFrame::width
int width
Definition: frame.h:499
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:595
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:590
AVOption
AVOption.
Definition: opt.h:429
ThreadData::bottom
const AVFrame * bottom
Definition: vf_blend.c:58
OFFSET
#define OFFSET(x)
Definition: vf_blend.c:66
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:539
BLEND_NEGATION
@ BLEND_NEGATION
Definition: blend.h:43
ThreadData::w
int w
Definition: vf_blend.c:62
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
var_names
static const char *const var_names[]
Definition: vf_blend.c:54
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:220
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
BLEND_HARMONIC
@ BLEND_HARMONIC
Definition: blend.h:64
video.h
BLEND_ADDITION
@ BLEND_ADDITION
Definition: blend.h:30
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:591
BLEND_MULTIPLY128
@ BLEND_MULTIPLY128
Definition: blend.h:58
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:518
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:448
BLEND_GEOMETRIC
@ BLEND_GEOMETRIC
Definition: blend.h:63
BLEND_BLEACH
@ BLEND_BLEACH
Definition: blend.h:65
BlendContext::all_mode
int all_mode
Definition: vf_blend.c:44
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:394
BLEND_NB
@ BLEND_NB
Definition: blend.h:69
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:735
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:56
BLEND_DIVIDE
@ BLEND_DIVIDE
Definition: blend.h:37
BLEND_PHOENIX
@ BLEND_PHOENIX
Definition: blend.h:46
FilterParams::e
AVExpr ** e
Definition: blend.h:81
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3496
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:587
VAR_N
@ VAR_N
Definition: vf_blend.c:55
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:560
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict, int *got_output)
Handle slice ends.
Definition: mpeg12dec.c:1693
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
VAR_B
@ VAR_B
Definition: vf_blend.c:55
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:558
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:597
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:537
config_params
static int config_params(AVFilterContext *ctx)
Definition: vf_blend.c:301
vf_blend_init.h
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:522
BLEND_AND
@ BLEND_AND
Definition: blend.h:31
BlendContext::params
FilterParams params[4]
Definition: vf_blend.c:48
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:368
DEFINE_BLEND_EXPR
#define DEFINE_BLEND_EXPR(type, name, div)
Definition: vf_blend.c:132
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_blend.c:262
blend_options
static const AVOption blend_options[]
Definition: vf_blend.c:69
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:40
BLEND_SOFTLIGHT
@ BLEND_SOFTLIGHT
Definition: blend.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:542
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:283
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:210
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:106
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:551
FFFilter
Definition: filters.h:267
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:86
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:562
ThreadData::plane
int plane
Definition: vf_blend.c:61
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_blend.c:168
s
#define s(width, name)
Definition: cbs_vp9.c:198
BLEND_OR
@ BLEND_OR
Definition: blend.h:44
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:563
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:108
BLEND_SCREEN
@ BLEND_SCREEN
Definition: blend.h:49
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:552
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Underlying C type is double.
Definition: opt.h:267
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
filters.h
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:594
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:536
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:550
ctx
static AVFormatContext * ctx
Definition: movenc.c:49
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:483
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
VAR_Y
@ VAR_Y
Definition: vf_blend.c:55
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:73
VAR_T
@ VAR_T
Definition: vf_blend.c:55
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:265
AV_PIX_FMT_GRAYF32
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:582
BLEND_EXTREMITY
@ BLEND_EXTREMITY
Definition: blend.h:61
NAN
#define NAN
Definition: mathematics.h:115
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
ThreadData::h
int h
Definition: vf_blend.c:62
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:87
arg
const char * arg
Definition: jacosubdec.c:65
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:519
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:59
BLEND_PINLIGHT
@ BLEND_PINLIGHT
Definition: blend.h:47
FilterParams::mode
enum BlendMode mode
Definition: blend.h:79
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:561
VAR_BOTTOM
@ VAR_BOTTOM
Definition: vf_blend.c:55
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:76
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:599
BLEND_MULTIPLY
@ BLEND_MULTIPLY
Definition: blend.h:42
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
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:85
BlendContext::depth
int depth
Definition: vf_blend.c:47
activate
filter_frame For filters that do not use the activate() callback
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:541
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:251
double
double
Definition: af_crystalizer.c:132
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:540
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:557
BLEND_SUBTRACT
@ BLEND_SUBTRACT
Definition: blend.h:51
ff_filter_link
static FilterLink * ff_filter_link(AVFilterLink *link)
Definition: filters.h:199
BLEND_FREEZE
@ BLEND_FREEZE
Definition: blend.h:60
FilterParams
filter data
Definition: mlp.h:86
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:94
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:372
height
#define height
Definition: dsp.h:89
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:87
i
#define i(width, name, range_min, range_max)
Definition: cbs_h264.c:63
BlendContext::prev_frame
AVFrame * prev_frame
Definition: vf_blend.c:50
AV_PIX_FMT_GBRPF32
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:578
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:544
BLEND_DODGE
@ BLEND_DODGE
Definition: blend.h:38
BlendContext::all_expr
char * all_expr
Definition: vf_blend.c:42
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:247
BlendContext::tblend
int tblend
Definition: vf_blend.c:49
BlendContext
Definition: vf_blend.c:37
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:546
BlendContext::hsub
int hsub
Definition: vf_blend.c:40
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:905
ff_vf_blend
const FFFilter ff_vf_blend
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:174
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:592
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, SliceParams *sliceparam)
Definition: blend.h:83
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_blend.c:55
ThreadData::param
FilterParams * param
Definition: vf_blend.c:63
BLEND_INTERPOLATE
@ BLEND_INTERPOLATE
Definition: blend.h:67
BLEND_HARDLIGHT
@ BLEND_HARDLIGHT
Definition: blend.h:40
VAR_X
@ VAR_X
Definition: vf_blend.c:55
SliceParams
Definition: blend.h:72
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:559
BlendContext::fs
FFFrameSync fs
Definition: vf_blend.c:39
ff_blend_init
static av_unused void ff_blend_init(FilterParams *param, int depth)
Definition: vf_blend_init.h:158
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:845
blend.h
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:46
BLEND_VIVIDLIGHT
@ BLEND_VIVIDLIGHT
Definition: blend.h:52
TOP
#define TOP
Definition: vf_blend.c:34
BLEND_DIFFERENCE
@ BLEND_DIFFERENCE
Definition: blend.h:35
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:264
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:538
BlendContext::nb_threads
int nb_threads
Definition: vf_blend.c:51
BlendContext::nb_planes
int nb_planes
Definition: vf_blend.c:41
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: dec.c:844
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:342
BLEND_HARDMIX
@ BLEND_HARDMIX
Definition: blend.h:54
ret
ret
Definition: filter_design.txt:187
BLEND_GRAINMERGE
@ BLEND_GRAINMERGE
Definition: blend.h:57
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:265
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:589
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:543
VAR_SH
@ VAR_SH
Definition: vf_blend.c:55
ThreadData::inlink
AVFilterLink * inlink
Definition: vf_blend.c:60
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:548
VAR_W
@ VAR_W
Definition: vf_blend.c:55
AVFrame::height
int height
Definition: frame.h:499
BLEND_HARDOVERLAY
@ BLEND_HARDOVERLAY
Definition: blend.h:68
framesync.h
ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: avfilter.c:1691
blend_frame
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:198
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:593
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
avfilter.h
AV_PIX_FMT_GBRAPF32
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:579
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:264
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:45
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:283
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:78
AVFilterContext
An instance of a filter.
Definition: avfilter.h:274
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
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:167
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:272
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:200
FFFilter::p
AVFilter p
The public AVFilter.
Definition: filters.h:271
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:77
mem.h
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:236
BLEND_AVERAGE
@ BLEND_AVERAGE
Definition: blend.h:32
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
FilterParams::opacity
double opacity
Definition: blend.h:80
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:80
AVFormatContext::name
char * name
Name of this format context, only used for logging purposes.
Definition: avformat.h:1889
ThreadData::top
const AVFrame * top
Definition: vf_blend.c:58
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:205
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:472
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:79
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:545
BLEND_BURN
@ BLEND_BURN
Definition: blend.h:33
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:549
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:352
blend_outputs
static const AVFilterPad blend_outputs[]
Definition: vf_blend.c:406
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:390
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition: opt.h:276
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:520
BLEND_REFLECT
@ BLEND_REFLECT
Definition: blend.h:48
BLEND_GRAINEXTRACT
@ BLEND_GRAINEXTRACT
Definition: blend.h:36
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
VAR_H
@ VAR_H
Definition: vf_blend.c:55
BOTTOM
#define BOTTOM
Definition: vf_blend.c:35
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:67
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:173
BLEND_LINEARLIGHT
@ BLEND_LINEARLIGHT
Definition: blend.h:55
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:547
BLEND_NORMAL
@ BLEND_NORMAL
Definition: blend.h:29
BLEND_OVERLAY
@ BLEND_OVERLAY
Definition: blend.h:45
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