FFmpeg
vf_dedot.c
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1 /*
2  * Copyright (c) 2018 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/opt.h"
23 #include "libavutil/pixdesc.h"
24 
25 #include "avfilter.h"
26 #include "filters.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30 
31 typedef struct DedotContext {
32  const AVClass *class;
33  int m;
34  float lt;
35  float tl;
36  float tc;
37  float ct;
38 
40  int depth;
41  int max;
42  int luma2d;
43  int lumaT;
44  int chromaT1;
45  int chromaT2;
46 
47  int eof;
49  int nb_planes;
50  int planewidth[4];
51  int planeheight[4];
52 
54 
55  int (*dedotcrawl)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
56  int (*derainbow)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
57 } DedotContext;
58 
60 {
61  static const enum AVPixelFormat pixel_fmts[] = {
77  };
79  if (!formats)
80  return AVERROR(ENOMEM);
81  return ff_set_common_formats(ctx, formats);
82 }
83 
84 #define DEFINE_DEDOTCRAWL(name, type, div) \
85 static int dedotcrawl##name(AVFilterContext *ctx, void *arg, \
86  int jobnr, int nb_jobs) \
87 { \
88  DedotContext *s = ctx->priv; \
89  AVFrame *out = arg; \
90  int src_linesize = s->frames[2]->linesize[0] / div; \
91  int dst_linesize = out->linesize[0] / div; \
92  int p0_linesize = s->frames[0]->linesize[0] / div; \
93  int p1_linesize = s->frames[1]->linesize[0] / div; \
94  int p3_linesize = s->frames[3]->linesize[0] / div; \
95  int p4_linesize = s->frames[4]->linesize[0] / div; \
96  const int h = s->planeheight[0]; \
97  int slice_start = (h * jobnr) / nb_jobs; \
98  int slice_end = (h * (jobnr+1)) / nb_jobs; \
99  type *p0 = (type *)s->frames[0]->data[0]; \
100  type *p1 = (type *)s->frames[1]->data[0]; \
101  type *p3 = (type *)s->frames[3]->data[0]; \
102  type *p4 = (type *)s->frames[4]->data[0]; \
103  type *src = (type *)s->frames[2]->data[0]; \
104  type *dst = (type *)out->data[0]; \
105  const int luma2d = s->luma2d; \
106  const int lumaT = s->lumaT; \
107  \
108  if (!slice_start) { \
109  slice_start++; \
110  } \
111  p0 += p0_linesize * slice_start; \
112  p1 += p1_linesize * slice_start; \
113  p3 += p3_linesize * slice_start; \
114  p4 += p4_linesize * slice_start; \
115  src += src_linesize * slice_start; \
116  dst += dst_linesize * slice_start; \
117  if (slice_end == h) { \
118  slice_end--; \
119  } \
120  for (int y = slice_start; y < slice_end; y++) { \
121  for (int x = 1; x < s->planewidth[0] - 1; x++) { \
122  int above = src[x - src_linesize]; \
123  int bellow = src[x + src_linesize]; \
124  int cur = src[x]; \
125  int left = src[x - 1]; \
126  int right = src[x + 1]; \
127  \
128  if (FFABS(above + bellow - 2 * cur) <= luma2d && \
129  FFABS(left + right - 2 * cur) <= luma2d) \
130  continue; \
131  \
132  if (FFABS(cur - p0[x]) <= lumaT && \
133  FFABS(cur - p4[x]) <= lumaT && \
134  FFABS(p1[x] - p3[x]) <= lumaT) { \
135  int diff1 = FFABS(cur - p1[x]); \
136  int diff2 = FFABS(cur - p3[x]); \
137  \
138  if (diff1 < diff2) \
139  dst[x] = (src[x] + p1[x] + 1) >> 1; \
140  else \
141  dst[x] = (src[x] + p3[x] + 1) >> 1; \
142  } \
143  } \
144  \
145  dst += dst_linesize; \
146  src += src_linesize; \
147  p0 += p0_linesize; \
148  p1 += p1_linesize; \
149  p3 += p3_linesize; \
150  p4 += p4_linesize; \
151  } \
152  return 0; \
153 }
154 
156 DEFINE_DEDOTCRAWL(16, uint16_t, 2)
157 
158 typedef struct ThreadData {
159  AVFrame *out;
160  int plane;
161 } ThreadData;
162 
163 #define DEFINE_DERAINBOW(name, type, div) \
164 static int derainbow##name(AVFilterContext *ctx, void *arg, \
165  int jobnr, int nb_jobs) \
166 { \
167  DedotContext *s = ctx->priv; \
168  ThreadData *td = arg; \
169  AVFrame *out = td->out; \
170  const int plane = td->plane; \
171  const int h = s->planeheight[plane]; \
172  int slice_start = (h * jobnr) / nb_jobs; \
173  int slice_end = (h * (jobnr+1)) / nb_jobs; \
174  int src_linesize = s->frames[2]->linesize[plane] / div; \
175  int dst_linesize = out->linesize[plane] / div; \
176  int p0_linesize = s->frames[0]->linesize[plane] / div; \
177  int p1_linesize = s->frames[1]->linesize[plane] / div; \
178  int p3_linesize = s->frames[3]->linesize[plane] / div; \
179  int p4_linesize = s->frames[4]->linesize[plane] / div; \
180  type *p0 = (type *)s->frames[0]->data[plane]; \
181  type *p1 = (type *)s->frames[1]->data[plane]; \
182  type *p3 = (type *)s->frames[3]->data[plane]; \
183  type *p4 = (type *)s->frames[4]->data[plane]; \
184  type *src = (type *)s->frames[2]->data[plane]; \
185  type *dst = (type *)out->data[plane]; \
186  const int chromaT1 = s->chromaT1; \
187  const int chromaT2 = s->chromaT2; \
188  \
189  p0 += slice_start * p0_linesize; \
190  p1 += slice_start * p1_linesize; \
191  p3 += slice_start * p3_linesize; \
192  p4 += slice_start * p4_linesize; \
193  src += slice_start * src_linesize; \
194  dst += slice_start * dst_linesize; \
195  for (int y = slice_start; y < slice_end; y++) { \
196  for (int x = 0; x < s->planewidth[plane]; x++) { \
197  int cur = src[x]; \
198  \
199  if (FFABS(cur - p0[x]) <= chromaT1 && \
200  FFABS(cur - p4[x]) <= chromaT1 && \
201  FFABS(p1[x] - p3[x]) <= chromaT1 && \
202  FFABS(cur - p1[x]) > chromaT2 && \
203  FFABS(cur - p3[x]) > chromaT2) { \
204  int diff1 = FFABS(cur - p1[x]); \
205  int diff2 = FFABS(cur - p3[x]); \
206  \
207  if (diff1 < diff2) \
208  dst[x] = (src[x] + p1[x] + 1) >> 1; \
209  else \
210  dst[x] = (src[x] + p3[x] + 1) >> 1; \
211  } \
212  } \
213  \
214  dst += dst_linesize; \
215  src += src_linesize; \
216  p0 += p0_linesize; \
217  p1 += p1_linesize; \
218  p3 += p3_linesize; \
219  p4 += p4_linesize; \
220  } \
221  return 0; \
222 }
223 
225 DEFINE_DERAINBOW(16, uint16_t, 2)
226 
227 static int config_output(AVFilterLink *outlink)
228 {
229  AVFilterContext *ctx = outlink->src;
230  DedotContext *s = ctx->priv;
231  AVFilterLink *inlink = ctx->inputs[0];
232 
233  s->desc = av_pix_fmt_desc_get(outlink->format);
234  if (!s->desc)
235  return AVERROR_BUG;
236  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
237  s->depth = s->desc->comp[0].depth;
238  s->max = (1 << s->depth) - 1;
239  s->luma2d = s->lt * s->max;
240  s->lumaT = s->tl * s->max;
241  s->chromaT1 = s->tc * s->max;
242  s->chromaT2 = s->ct * s->max;
243 
244  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
245  s->planewidth[0] = s->planewidth[3] = inlink->w;
246 
247  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
248  s->planeheight[0] = s->planeheight[3] = inlink->h;
249 
250  if (s->depth <= 8) {
251  s->dedotcrawl = dedotcrawl8;
252  s->derainbow = derainbow8;
253  } else {
254  s->dedotcrawl = dedotcrawl16;
255  s->derainbow = derainbow16;
256  }
257 
258  return 0;
259 }
260 
262 {
263  AVFilterLink *inlink = ctx->inputs[0];
264  AVFilterLink *outlink = ctx->outputs[0];
265  DedotContext *s = ctx->priv;
266  AVFrame *frame = NULL;
267  int64_t pts;
268  int status;
269  int ret = 0;
270 
271  FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
272 
273  if (s->eof == 0) {
274  ret = ff_inlink_consume_frame(inlink, &frame);
275  if (ret < 0)
276  return ret;
277  }
278  if (frame || s->eof_frames > 0) {
279  AVFrame *out = NULL;
280 
281  if (frame) {
282  for (int i = 2; i < 5; i++) {
283  if (!s->frames[i])
284  s->frames[i] = av_frame_clone(frame);
285  }
286  av_frame_free(&frame);
287  } else if (s->frames[3]) {
288  s->eof_frames--;
289  s->frames[4] = av_frame_clone(s->frames[3]);
290  }
291 
292  if (s->frames[0] &&
293  s->frames[1] &&
294  s->frames[2] &&
295  s->frames[3] &&
296  s->frames[4]) {
297  out = av_frame_clone(s->frames[2]);
298  if (out && !ctx->is_disabled) {
299  ret = av_frame_make_writable(out);
300  if (ret >= 0) {
301  if (s->m & 1)
302  ctx->internal->execute(ctx, s->dedotcrawl, out, NULL,
303  FFMIN(s->planeheight[0],
305  if (s->m & 2) {
306  ThreadData td;
307  td.out = out; td.plane = 1;
308  ctx->internal->execute(ctx, s->derainbow, &td, NULL,
309  FFMIN(s->planeheight[1],
311  td.plane = 2;
312  ctx->internal->execute(ctx, s->derainbow, &td, NULL,
313  FFMIN(s->planeheight[2],
315  }
316  }
317  } else if (!out) {
318  ret = AVERROR(ENOMEM);
319  }
320  }
321 
322  av_frame_free(&s->frames[0]);
323  s->frames[0] = s->frames[1];
324  s->frames[1] = s->frames[2];
325  s->frames[2] = s->frames[3];
326  s->frames[3] = s->frames[4];
327  s->frames[4] = NULL;
328 
329  if (ret < 0)
330  return ret;
331  if (out)
332  return ff_filter_frame(outlink, out);
333  }
334 
335  if (s->eof) {
336  if (s->eof_frames <= 0) {
337  ff_outlink_set_status(outlink, AVERROR_EOF, s->frames[2]->pts);
338  } else {
339  ff_filter_set_ready(ctx, 10);
340  }
341  return 0;
342  }
343 
344  if (!s->eof && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
345  if (status == AVERROR_EOF) {
346  s->eof = 1;
347  s->eof_frames = !!s->frames[0] + !!s->frames[1];
348  if (s->eof_frames <= 0) {
349  ff_outlink_set_status(outlink, AVERROR_EOF, pts);
350  return 0;
351  }
352  ff_filter_set_ready(ctx, 10);
353  return 0;
354  }
355  }
356 
357  FF_FILTER_FORWARD_WANTED(outlink, inlink);
358 
359  return FFERROR_NOT_READY;
360 }
361 
363 {
364  DedotContext *s = ctx->priv;
365 
366  for (int i = 0; i < 5; i++)
367  av_frame_free(&s->frames[i]);
368 }
369 
370 #define OFFSET(x) offsetof(DedotContext, x)
371 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
372 
373 static const AVOption dedot_options[] = {
374  { "m", "set filtering mode", OFFSET( m), AV_OPT_TYPE_FLAGS, {.i64=3}, 0, 3, FLAGS, "m" },
375  { "dotcrawl", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "m" },
376  { "rainbows", 0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "m" },
377  { "lt", "set spatial luma threshold", OFFSET(lt), AV_OPT_TYPE_FLOAT, {.dbl=.079}, 0, 1, FLAGS },
378  { "tl", "set tolerance for temporal luma", OFFSET(tl), AV_OPT_TYPE_FLOAT, {.dbl=.079}, 0, 1, FLAGS },
379  { "tc", "set tolerance for chroma temporal variation", OFFSET(tc), AV_OPT_TYPE_FLOAT, {.dbl=.058}, 0, 1, FLAGS },
380  { "ct", "set temporal chroma threshold", OFFSET(ct), AV_OPT_TYPE_FLOAT, {.dbl=.019}, 0, 1, FLAGS },
381  { NULL },
382 };
383 
384 static const AVFilterPad inputs[] = {
385  {
386  .name = "default",
387  .type = AVMEDIA_TYPE_VIDEO,
388  },
389  { NULL }
390 };
391 
392 static const AVFilterPad outputs[] = {
393  {
394  .name = "default",
395  .type = AVMEDIA_TYPE_VIDEO,
396  .config_props = config_output,
397  },
398  { NULL }
399 };
400 
401 AVFILTER_DEFINE_CLASS(dedot);
402 
404  .name = "dedot",
405  .description = NULL_IF_CONFIG_SMALL("Reduce cross-luminance and cross-color."),
406  .priv_size = sizeof(DedotContext),
407  .priv_class = &dedot_class,
409  .activate = activate,
410  .uninit = uninit,
411  .inputs = inputs,
412  .outputs = outputs,
414 };
int planewidth[4]
Definition: vf_dedot.c:50
int plane
Definition: avisynth_c.h:384
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link&#39;s FIFO and update the link&#39;s stats.
Definition: avfilter.c:1494
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
AVFrame * out
Definition: af_adeclick.c:488
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:422
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
int eof_frames
Definition: vf_dedot.c:48
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
static const AVOption dedot_options[]
Definition: vf_dedot.c:373
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
int chromaT2
Definition: vf_dedot.c:45
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
float tl
Definition: vf_dedot.c:35
static int activate(AVFilterContext *ctx)
Definition: vf_dedot.c:261
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
const AVPixFmtDescriptor * desc
Definition: vf_dedot.c:39
return FFERROR_NOT_READY
static int query_formats(AVFilterContext *ctx)
Definition: vf_dedot.c:59
AVFilter ff_vf_dedot
Definition: vf_dedot.c:403
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
Definition: filters.h:189
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:421
int plane
Definition: vf_blend.c:57
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AVERROR_EOF
End of file.
Definition: error.h:55
int nb_planes
Definition: vf_dedot.c:49
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
int(* dedotcrawl)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_dedot.c:55
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition: filters.h:199
A filter pad used for either input or output.
Definition: internal.h:54
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
Definition: avfilter.c:1449
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:569
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define FLAGS
Definition: vf_dedot.c:371
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
const char * arg
Definition: jacosubdec.c:66
int chromaT1
Definition: vf_dedot.c:44
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
AVFILTER_DEFINE_CLASS(dedot)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
float tc
Definition: vf_dedot.c:36
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define FFMIN(a, b)
Definition: common.h:96
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
#define DEFINE_DERAINBOW(name, type, div)
Definition: vf_dedot.c:163
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:428
AVFormatContext * ctx
Definition: movenc.c:48
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
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:426
#define OFFSET(x)
Definition: vf_dedot.c:370
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
Used for passing data between threads.
Definition: dsddec.c:64
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
float ct
Definition: vf_dedot.c:37
float lt
Definition: vf_dedot.c:34
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
#define DEFINE_DEDOTCRAWL(name, type, div)
Definition: vf_dedot.c:84
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:393
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
#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:133
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static const AVFilterPad inputs[]
Definition: vf_dedot.c:384
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
int(* derainbow)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_dedot.c:56
static int64_t pts
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
Definition: frame.c:611
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
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
AVFrame * frames[5]
Definition: vf_dedot.c:53
int
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_dedot.c:362
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
static const AVFilterPad outputs[]
Definition: vf_dedot.c:392
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
Definition: avfilter.c:193
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:423
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
avfilter_execute_func * execute
Definition: internal.h:155
int luma2d
Definition: vf_dedot.c:42
FF_FILTER_FORWARD_WANTED(outlink, inlink)
static int config_output(AVFilterLink *outlink)
Definition: vf_dedot.c:227
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
An instance of a filter.
Definition: avfilter.h:338
int planeheight[4]
Definition: vf_dedot.c:51
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
formats
Definition: signature.h:48
internal API functions
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
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:427
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58