FFmpeg
vf_limitdiff.c
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1 /*
2  * Copyright (c) 2021 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/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29 
30 typedef struct ThreadData {
32 } ThreadData;
33 
34 typedef struct LimitDiffContext {
35  const AVClass *class;
36 
37  float threshold;
38  float elasticity;
39  int reference;
40  int planes;
41 
42  int thr1, thr2;
43 
44  int linesize[4];
45  int planewidth[4], planeheight[4];
46  int nb_planes;
47  int depth;
49 
50  void (*limitdiff)(const uint8_t *filtered, uint8_t *dst,
51  const uint8_t *source, const uint8_t *reference,
52  int thr1, int thr2, int w, int depth);
54 
55 #define OFFSET(x) offsetof(LimitDiffContext, x)
56 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
57 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
58 
59 static const AVOption limitdiff_options[] = {
60  { "threshold", "set the threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=1/255.f}, 0, 1, TFLAGS },
61  { "elasticity", "set the elasticity", OFFSET(elasticity), AV_OPT_TYPE_FLOAT, {.dbl=2.f}, 0, 10, TFLAGS },
62  { "reference", "enable reference stream", OFFSET(reference), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
63  { "planes", "set the planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, TFLAGS },
64  { NULL }
65 };
66 
67 static const enum AVPixelFormat pix_fmts[] = {
87 };
88 
89 static void limitdiff8(const uint8_t *filtered, uint8_t *dst,
90  const uint8_t *source, const uint8_t *reference,
91  int thr1, int thr2, int w, int depth)
92 {
93  for (int x = 0; x < w; x++) {
94  const int diff = filtered[x] - source[x];
95  const int diff_ref = FFABS(filtered[x] - reference[x]);
96 
97  if (diff_ref <= thr1)
98  dst[x] = filtered[x];
99  else if (diff_ref >= thr2)
100  dst[x] = source[x];
101  else
102  dst[x] = av_clip_uint8(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1));
103  }
104 }
105 
106 static void limitdiff16(const uint8_t *ffiltered, uint8_t *ddst,
107  const uint8_t *ssource, const uint8_t *rreference,
108  int thr1, int thr2, int w, int depth)
109 {
110  const uint16_t *source = (const uint16_t *)ssource;
111  const uint16_t *filtered = (const uint16_t *)ffiltered;
112  const uint16_t *reference = (const uint16_t *)rreference;
113  uint16_t *dst = (uint16_t *)ddst;
114 
115  for (int x = 0; x < w; x++) {
116  const int diff = filtered[x] - source[x];
117  const int diff_ref = FFABS(filtered[x] - reference[x]);
118 
119  if (diff_ref <= thr1)
120  dst[x] = filtered[x];
121  else if (diff_ref >= thr2)
122  dst[x] = source[x];
123  else
124  dst[x] = av_clip_uintp2_c(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1), depth);
125  }
126 }
127 
129 {
130  AVFilterContext *ctx = inlink->dst;
131  LimitDiffContext *s = ctx->priv;
133  int vsub, hsub, ret;
134 
135  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
136 
137  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
138  return ret;
139 
140  hsub = desc->log2_chroma_w;
141  vsub = desc->log2_chroma_h;
142  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
143  s->planeheight[0] = s->planeheight[3] = inlink->h;
144  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
145  s->planewidth[0] = s->planewidth[3] = inlink->w;
146 
147  s->depth = desc->comp[0].depth;
148  s->thr1 = s->threshold * ((1 << s->depth) - 1);
149  s->thr2 = s->thr1 * s->elasticity;
150 
151  if (desc->comp[0].depth == 8)
152  s->limitdiff = limitdiff8;
153  else
154  s->limitdiff = limitdiff16;
155 
156  return 0;
157 }
158 
159 static int limitdiff_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
160 {
161  LimitDiffContext *s = ctx->priv;
162  const int depth = s->depth;
163  ThreadData *td = arg;
164 
165  for (int p = 0; p < s->nb_planes; p++) {
166  const ptrdiff_t filtered_linesize = td->filtered->linesize[p];
167  const ptrdiff_t source_linesize = td->source->linesize[p];
168  const ptrdiff_t reference_linesize = td->reference->linesize[p];
169  const ptrdiff_t dst_linesize = td->dst->linesize[p];
170  const int thr1 = s->thr1;
171  const int thr2 = s->thr2;
172  const int w = s->planewidth[p];
173  const int h = s->planeheight[p];
174  const int slice_start = (h * jobnr) / nb_jobs;
175  const int slice_end = (h * (jobnr+1)) / nb_jobs;
176  const uint8_t *filtered = td->filtered->data[p] + slice_start * filtered_linesize;
177  const uint8_t *source = td->source->data[p] + slice_start * source_linesize;
178  const uint8_t *reference = td->reference->data[p] + slice_start * reference_linesize;
179  uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize;
180 
181  if (!((1 << p) & s->planes)) {
182  av_image_copy_plane(dst, dst_linesize, filtered, filtered_linesize,
183  s->linesize[p], slice_end - slice_start);
184  continue;
185  }
186 
187  for (int y = slice_start; y < slice_end; y++) {
188  s->limitdiff(filtered, dst, source, reference, thr1, thr2, w, depth);
189 
190  dst += dst_linesize;
191  filtered += filtered_linesize;
192  source += source_linesize;
193  reference += reference_linesize;
194  }
195  }
196 
197  return 0;
198 }
199 
201 {
202  AVFilterContext *ctx = fs->parent;
203  LimitDiffContext *s = fs->opaque;
204  AVFilterLink *outlink = ctx->outputs[0];
205  AVFrame *out, *filtered, *source, *reference = NULL;
206  int ret;
207 
208  if ((ret = ff_framesync_get_frame(&s->fs, 0, &filtered, 0)) < 0 ||
209  (ret = ff_framesync_get_frame(&s->fs, 1, &source, 0)) < 0)
210  return ret;
211  if (s->reference) {
212  if ((ret = ff_framesync_get_frame(&s->fs, 2, &reference, 0)) < 0)
213  return ret;
214  }
215 
216  if (ctx->is_disabled) {
217  out = av_frame_clone(filtered);
218  if (!out)
219  return AVERROR(ENOMEM);
220  } else {
221  ThreadData td;
222 
223  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
224  if (!out)
225  return AVERROR(ENOMEM);
226  av_frame_copy_props(out, filtered);
227 
228  td.filtered = filtered;
229  td.source = source;
230  td.reference = reference ? reference : source;
231  td.dst = out;
232 
234  FFMIN(s->planeheight[0], ff_filter_get_nb_threads(ctx)));
235  }
236  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
237 
238  return ff_filter_frame(outlink, out);
239 }
240 
241 static int config_output(AVFilterLink *outlink)
242 {
243  AVFilterContext *ctx = outlink->src;
244  LimitDiffContext *s = ctx->priv;
245  AVFilterLink *filtered = ctx->inputs[0];
246  AVFilterLink *source = ctx->inputs[1];
247  FFFrameSyncIn *in;
248  int ret;
249 
250  if (filtered->w != source->w || filtered->h != source->h) {
251  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
252  "(size %dx%d) do not match the corresponding "
253  "second input link %s parameters (%dx%d)\n",
254  ctx->input_pads[0].name, filtered->w, filtered->h,
255  ctx->input_pads[1].name, source->w, source->h);
256  return AVERROR(EINVAL);
257  }
258 
259  if (s->reference) {
260  AVFilterLink *reference = ctx->inputs[2];
261 
262  if (filtered->w != reference->w || filtered->h != reference->h) {
263  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
264  "(size %dx%d) do not match the corresponding "
265  "third input link %s parameters (%dx%d)\n",
266  ctx->input_pads[0].name, filtered->w, filtered->h,
267  ctx->input_pads[1].name, reference->w, reference->h);
268  return AVERROR(EINVAL);
269  }
270  }
271 
272  outlink->w = filtered->w;
273  outlink->h = filtered->h;
274  outlink->sample_aspect_ratio = filtered->sample_aspect_ratio;
275  outlink->frame_rate = filtered->frame_rate;
276 
277  if ((ret = ff_framesync_init(&s->fs, ctx, 2 + !!s->reference)) < 0)
278  return ret;
279 
280  in = s->fs.in;
281  in[0].time_base = filtered->time_base;
282  in[1].time_base = source->time_base;
283  if (s->reference)
284  in[2].time_base = ctx->inputs[2]->time_base;
285  in[0].sync = 1;
286  in[0].before = EXT_STOP;
287  in[0].after = EXT_INFINITY;
288  in[1].sync = 1;
289  in[1].before = EXT_STOP;
290  in[1].after = EXT_INFINITY;
291  if (s->reference) {
292  in[2].sync = 1;
293  in[2].before = EXT_STOP;
294  in[2].after = EXT_INFINITY;
295  }
296  s->fs.opaque = s;
297  s->fs.on_event = process_frame;
298 
299  ret = ff_framesync_configure(&s->fs);
300  outlink->time_base = s->fs.time_base;
301 
302  return ret;
303 }
304 
306 {
307  LimitDiffContext *s = ctx->priv;
308  return ff_framesync_activate(&s->fs);
309 }
310 
312 {
313  const LimitDiffContext *s = ctx->priv;
314  AVFilterPad pad = {
315  .name = "filtered",
316  .type = AVMEDIA_TYPE_VIDEO,
317  .config_props = config_input,
318  };
319  int ret;
320 
321  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
322  return ret;
323 
324  pad.name = "source";
325  pad.config_props = NULL;
326  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
327  return ret;
328 
329  if (s->reference) {
330  pad.name = "reference";
331  pad.config_props = NULL;
332  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
333  return ret;
334  }
335 
336  return 0;
337 }
338 
340 {
341  LimitDiffContext *s = ctx->priv;
342 
343  ff_framesync_uninit(&s->fs);
344 }
345 
346 static const AVFilterPad limitdiff_outputs[] = {
347  {
348  .name = "default",
349  .type = AVMEDIA_TYPE_VIDEO,
350  .config_props = config_output,
351  },
352 };
353 
354 AVFILTER_DEFINE_CLASS(limitdiff);
355 
357  .name = "limitdiff",
358  .description = NULL_IF_CONFIG_SMALL("Apply filtering with limiting difference."),
359  .priv_class = &limitdiff_class,
360  .priv_size = sizeof(LimitDiffContext),
361  .init = init,
362  .uninit = uninit,
363  .activate = activate,
369  .process_command = ff_filter_process_command,
370 };
limitdiff_outputs
static const AVFilterPad limitdiff_outputs[]
Definition: vf_limitdiff.c:346
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:447
limitdiff8
static void limitdiff8(const uint8_t *filtered, uint8_t *dst, const uint8_t *source, const uint8_t *reference, int thr1, int thr2, int w, int depth)
Definition: vf_limitdiff.c:89
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:426
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
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
LimitDiffContext::reference
int reference
Definition: vf_limitdiff.c:39
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_limitdiff.c:200
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:2660
LimitDiffContext::threshold
float threshold
Definition: vf_limitdiff.c:37
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:248
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
ThreadData::source
AVFrame * source
Definition: vf_limitdiff.c:31
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
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:439
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:310
pixdesc.h
av_clip_uintp2_c
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.
Definition: common.h:276
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:446
w
uint8_t w
Definition: llviddspenc.c:38
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:441
AVOption
AVOption.
Definition: opt.h:247
LimitDiffContext::planeheight
int planeheight[4]
Definition: vf_limitdiff.c:45
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:404
LimitDiffContext::depth
int depth
Definition: vf_limitdiff.c:47
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
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:169
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
EXT_INFINITY
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:442
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:384
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
formats.h
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2700
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:438
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:422
ff_append_inpad
int ff_append_inpad(AVFilterContext *f, AVFilterPad *p)
Append a new input/output pad to the filter's list of such pads.
Definition: avfilter.c:139
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:420
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:448
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:81
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_limitdiff.c:311
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:402
LimitDiffContext::limitdiff
void(* limitdiff)(const uint8_t *filtered, uint8_t *dst, const uint8_t *source, const uint8_t *reference, int thr1, int thr2, int w, int depth)
Definition: vf_limitdiff.c:50
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:388
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:139
AVFILTER_FLAG_DYNAMIC_INPUTS
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:110
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:407
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
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:416
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:424
av_image_fill_linesizes
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:425
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
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:417
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2041
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:445
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:401
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:415
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:387
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:422
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:141
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_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
planes
static const struct @321 planes[]
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:65
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:385
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:83
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:423
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
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
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
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(limitdiff)
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:405
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_limitdiff.c:241
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:419
ff_vf_limitdiff
const AVFilter ff_vf_limitdiff
Definition: vf_limitdiff.c:356
LimitDiffContext::nb_planes
int nb_planes
Definition: vf_limitdiff.c:46
source
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 source
Definition: filter_design.txt:255
AVFilterPad::config_props
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:130
LimitDiffContext::elasticity
float elasticity
Definition: vf_limitdiff.c:38
limitdiff16
static void limitdiff16(const uint8_t *ffiltered, uint8_t *ddst, const uint8_t *ssource, const uint8_t *rreference, int thr1, int thr2, int w, int depth)
Definition: vf_limitdiff.c:106
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
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:409
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:411
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
limitdiff_options
static const AVOption limitdiff_options[]
Definition: vf_limitdiff.c:59
LimitDiffContext::fs
FFFrameSync fs
Definition: vf_limitdiff.c:48
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:443
ThreadData::filtered
AVFrame * filtered
Definition: vf_limitdiff.c:31
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:227
LimitDiffContext::thr2
int thr2
Definition: vf_limitdiff.c:42
activate
static int activate(AVFilterContext *ctx)
Definition: vf_limitdiff.c:305
TFLAGS
#define TFLAGS
Definition: vf_limitdiff.c:56
LimitDiffContext::planes
int planes
Definition: vf_limitdiff.c:40
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:421
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_limitdiff.c:128
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
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_limitdiff.c:67
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
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
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_limitdiff.c:339
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:403
AVFilter
Filter definition.
Definition: avfilter.h:165
ThreadData::reference
AVFrame * reference
Definition: vf_limitdiff.c:31
ret
ret
Definition: filter_design.txt:187
LimitDiffContext
Definition: vf_limitdiff.c:34
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:440
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:79
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:408
FLAGS
#define FLAGS
Definition: vf_limitdiff.c:57
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:413
LimitDiffContext::planewidth
int planewidth[4]
Definition: vf_limitdiff.c:45
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:444
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
av_clip_uint8
#define av_clip_uint8
Definition: common.h:102
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:402
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
desc
const char * desc
Definition: libsvtav1.c:79
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
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
diff
static av_always_inline int diff(const uint32_t a, const uint32_t b)
Definition: vf_palettegen.c:139
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
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
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:154
imgutils.h
LimitDiffContext::linesize
int linesize[4]
Definition: vf_limitdiff.c:44
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
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:410
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:414
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
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:386
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
LimitDiffContext::thr1
int thr1
Definition: vf_limitdiff.c:42
limitdiff_slice
static int limitdiff_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_limitdiff.c:159
OFFSET
#define OFFSET(x)
Definition: vf_limitdiff.c:55
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
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:412