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 "internal.h"
26 #include "video.h"
27 #include "framesync.h"
28 
29 typedef struct ThreadData {
31 } ThreadData;
32 
33 typedef struct LimitDiffContext {
34  const AVClass *class;
35 
36  float threshold;
37  float elasticity;
38  int reference;
39  int planes;
40 
41  int thr1, thr2;
42 
43  int linesize[4];
44  int planewidth[4], planeheight[4];
45  int nb_planes;
46  int depth;
48 
49  void (*limitdiff)(const uint8_t *filtered, uint8_t *dst,
50  const uint8_t *source, const uint8_t *reference,
51  int thr1, int thr2, int w, int depth);
53 
54 #define OFFSET(x) offsetof(LimitDiffContext, x)
55 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
56 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
57 
58 static const AVOption limitdiff_options[] = {
59  { "threshold", "set the threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=1/255.f}, 0, 1, TFLAGS },
60  { "elasticity", "set the elasticity", OFFSET(elasticity), AV_OPT_TYPE_FLOAT, {.dbl=2.f}, 0, 10, TFLAGS },
61  { "reference", "enable reference stream", OFFSET(reference), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
62  { "planes", "set the planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, TFLAGS },
63  { NULL }
64 };
65 
66 static const enum AVPixelFormat pix_fmts[] = {
86 };
87 
88 static void limitdiff8(const uint8_t *filtered, uint8_t *dst,
89  const uint8_t *source, const uint8_t *reference,
90  int thr1, int thr2, int w, int depth)
91 {
92  for (int x = 0; x < w; x++) {
93  const int diff = filtered[x] - source[x];
94  const int diff_ref = FFABS(filtered[x] - reference[x]);
95 
96  if (diff_ref <= thr1)
97  dst[x] = filtered[x];
98  else if (diff_ref >= thr2)
99  dst[x] = source[x];
100  else
101  dst[x] = av_clip_uint8(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1));
102  }
103 }
104 
105 static void limitdiff16(const uint8_t *ffiltered, uint8_t *ddst,
106  const uint8_t *ssource, const uint8_t *rreference,
107  int thr1, int thr2, int w, int depth)
108 {
109  const uint16_t *source = (const uint16_t *)ssource;
110  const uint16_t *filtered = (const uint16_t *)ffiltered;
111  const uint16_t *reference = (const uint16_t *)rreference;
112  uint16_t *dst = (uint16_t *)ddst;
113 
114  for (int x = 0; x < w; x++) {
115  const int diff = filtered[x] - source[x];
116  const int diff_ref = FFABS(filtered[x] - reference[x]);
117 
118  if (diff_ref <= thr1)
119  dst[x] = filtered[x];
120  else if (diff_ref >= thr2)
121  dst[x] = source[x];
122  else
123  dst[x] = av_clip_uintp2_c(source[x] + diff * (thr2 - diff_ref) / (thr2 - thr1), depth);
124  }
125 }
126 
128 {
129  AVFilterContext *ctx = inlink->dst;
130  LimitDiffContext *s = ctx->priv;
132  int vsub, hsub, ret;
133 
134  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
135 
136  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
137  return ret;
138 
139  hsub = desc->log2_chroma_w;
140  vsub = desc->log2_chroma_h;
141  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
142  s->planeheight[0] = s->planeheight[3] = inlink->h;
143  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
144  s->planewidth[0] = s->planewidth[3] = inlink->w;
145 
146  s->depth = desc->comp[0].depth;
147  s->thr1 = s->threshold * ((1 << s->depth) - 1);
148  s->thr2 = s->thr1 * s->elasticity;
149 
150  if (desc->comp[0].depth == 8)
151  s->limitdiff = limitdiff8;
152  else
153  s->limitdiff = limitdiff16;
154 
155  return 0;
156 }
157 
158 static int limitdiff_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
159 {
160  LimitDiffContext *s = ctx->priv;
161  const int depth = s->depth;
162  ThreadData *td = arg;
163 
164  for (int p = 0; p < s->nb_planes; p++) {
165  const ptrdiff_t filtered_linesize = td->filtered->linesize[p];
166  const ptrdiff_t source_linesize = td->source->linesize[p];
167  const ptrdiff_t reference_linesize = td->reference->linesize[p];
168  const ptrdiff_t dst_linesize = td->dst->linesize[p];
169  const int thr1 = s->thr1;
170  const int thr2 = s->thr2;
171  const int w = s->planewidth[p];
172  const int h = s->planeheight[p];
173  const int slice_start = (h * jobnr) / nb_jobs;
174  const int slice_end = (h * (jobnr+1)) / nb_jobs;
175  const uint8_t *filtered = td->filtered->data[p] + slice_start * filtered_linesize;
176  const uint8_t *source = td->source->data[p] + slice_start * source_linesize;
177  const uint8_t *reference = td->reference->data[p] + slice_start * reference_linesize;
178  uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize;
179 
180  if (!((1 << p) & s->planes)) {
181  av_image_copy_plane(dst, dst_linesize, filtered, filtered_linesize,
182  s->linesize[p], slice_end - slice_start);
183  continue;
184  }
185 
186  for (int y = slice_start; y < slice_end; y++) {
187  s->limitdiff(filtered, dst, source, reference, thr1, thr2, w, depth);
188 
189  dst += dst_linesize;
190  filtered += filtered_linesize;
191  source += source_linesize;
192  reference += reference_linesize;
193  }
194  }
195 
196  return 0;
197 }
198 
200 {
201  AVFilterContext *ctx = fs->parent;
202  LimitDiffContext *s = fs->opaque;
203  AVFilterLink *outlink = ctx->outputs[0];
204  AVFrame *out, *filtered, *source, *reference = NULL;
205  int ret;
206 
207  if ((ret = ff_framesync_get_frame(&s->fs, 0, &filtered, 0)) < 0 ||
208  (ret = ff_framesync_get_frame(&s->fs, 1, &source, 0)) < 0)
209  return ret;
210  if (s->reference) {
211  if ((ret = ff_framesync_get_frame(&s->fs, 2, &reference, 0)) < 0)
212  return ret;
213  }
214 
215  if (ctx->is_disabled) {
216  out = av_frame_clone(filtered);
217  if (!out)
218  return AVERROR(ENOMEM);
219  } else {
220  ThreadData td;
221 
222  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
223  if (!out)
224  return AVERROR(ENOMEM);
225  av_frame_copy_props(out, filtered);
226 
227  td.filtered = filtered;
228  td.source = source;
229  td.reference = reference ? reference : source;
230  td.dst = out;
231 
233  FFMIN(s->planeheight[0], ff_filter_get_nb_threads(ctx)));
234  }
235  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
236 
237  return ff_filter_frame(outlink, out);
238 }
239 
240 static int config_output(AVFilterLink *outlink)
241 {
242  AVFilterContext *ctx = outlink->src;
243  LimitDiffContext *s = ctx->priv;
244  AVFilterLink *filtered = ctx->inputs[0];
245  AVFilterLink *source = ctx->inputs[1];
246  FFFrameSyncIn *in;
247  int ret;
248 
249  if (filtered->w != source->w || filtered->h != source->h) {
250  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
251  "(size %dx%d) do not match the corresponding "
252  "second input link %s parameters (%dx%d)\n",
253  ctx->input_pads[0].name, filtered->w, filtered->h,
254  ctx->input_pads[1].name, source->w, source->h);
255  return AVERROR(EINVAL);
256  }
257 
258  if (s->reference) {
259  AVFilterLink *reference = ctx->inputs[2];
260 
261  if (filtered->w != reference->w || filtered->h != reference->h) {
262  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
263  "(size %dx%d) do not match the corresponding "
264  "third input link %s parameters (%dx%d)\n",
265  ctx->input_pads[0].name, filtered->w, filtered->h,
266  ctx->input_pads[1].name, reference->w, reference->h);
267  return AVERROR(EINVAL);
268  }
269  }
270 
271  outlink->w = filtered->w;
272  outlink->h = filtered->h;
273  outlink->sample_aspect_ratio = filtered->sample_aspect_ratio;
274  outlink->frame_rate = filtered->frame_rate;
275 
276  if ((ret = ff_framesync_init(&s->fs, ctx, 2 + !!s->reference)) < 0)
277  return ret;
278 
279  in = s->fs.in;
280  in[0].time_base = filtered->time_base;
281  in[1].time_base = source->time_base;
282  if (s->reference)
283  in[2].time_base = ctx->inputs[2]->time_base;
284  in[0].sync = 1;
285  in[0].before = EXT_STOP;
286  in[0].after = EXT_INFINITY;
287  in[1].sync = 1;
288  in[1].before = EXT_STOP;
289  in[1].after = EXT_INFINITY;
290  if (s->reference) {
291  in[2].sync = 1;
292  in[2].before = EXT_STOP;
293  in[2].after = EXT_INFINITY;
294  }
295  s->fs.opaque = s;
296  s->fs.on_event = process_frame;
297 
298  ret = ff_framesync_configure(&s->fs);
299  outlink->time_base = s->fs.time_base;
300 
301  return ret;
302 }
303 
305 {
306  LimitDiffContext *s = ctx->priv;
307  return ff_framesync_activate(&s->fs);
308 }
309 
311 {
312  const LimitDiffContext *s = ctx->priv;
313  AVFilterPad pad = {
314  .name = "filtered",
315  .type = AVMEDIA_TYPE_VIDEO,
316  .config_props = config_input,
317  };
318  int ret;
319 
320  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
321  return ret;
322 
323  pad.name = "source";
324  pad.config_props = NULL;
325  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
326  return ret;
327 
328  if (s->reference) {
329  pad.name = "reference";
330  pad.config_props = NULL;
331  if ((ret = ff_append_inpad(ctx, &pad)) < 0)
332  return ret;
333  }
334 
335  return 0;
336 }
337 
339 {
340  LimitDiffContext *s = ctx->priv;
341 
342  ff_framesync_uninit(&s->fs);
343 }
344 
345 static const AVFilterPad limitdiff_outputs[] = {
346  {
347  .name = "default",
348  .type = AVMEDIA_TYPE_VIDEO,
349  .config_props = config_output,
350  },
351 };
352 
353 AVFILTER_DEFINE_CLASS(limitdiff);
354 
356  .name = "limitdiff",
357  .description = NULL_IF_CONFIG_SMALL("Apply filtering with limiting difference."),
358  .priv_class = &limitdiff_class,
359  .priv_size = sizeof(LimitDiffContext),
360  .init = init,
361  .uninit = uninit,
362  .activate = activate,
368  .process_command = ff_filter_process_command,
369 };
limitdiff_outputs
static const AVFilterPad limitdiff_outputs[]
Definition: vf_limitdiff.c:345
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:112
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:522
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:88
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:501
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:117
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:137
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
LimitDiffContext::reference
int reference
Definition: vf_limitdiff.c:38
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_limitdiff.c:199
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:307
out
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:1015
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
LimitDiffContext::threshold
float threshold
Definition: vf_limitdiff.c:36
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:270
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:162
ThreadData::source
AVFrame * source
Definition: vf_limitdiff.c:30
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:514
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
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:279
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:521
w
uint8_t w
Definition: llviddspenc.c:38
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:516
AVOption
AVOption.
Definition: opt.h:357
LimitDiffContext::planeheight
int planeheight[4]
Definition: vf_limitdiff.c:44
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:478
LimitDiffContext::depth
int depth
Definition: vf_limitdiff.c:46
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
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
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:517
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:458
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
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3005
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:513
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:496
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:127
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:494
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:523
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:102
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_limitdiff.c:310
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:476
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:49
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:462
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:160
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:106
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:481
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:180
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:490
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:498
planes
static const struct @417 planes[]
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:198
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:499
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
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:491
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:59
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:1730
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:520
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:475
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:489
ctx
AVFormatContext * ctx
Definition: movenc.c:49
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:461
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:593
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:142
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
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:67
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:73
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:459
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:58
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:497
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:709
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
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(limitdiff)
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:479
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_limitdiff.c:240
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:493
ff_vf_limitdiff
const AVFilter ff_vf_limitdiff
Definition: vf_limitdiff.c:355
LimitDiffContext::nb_planes
int nb_planes
Definition: vf_limitdiff.c:45
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:113
LimitDiffContext::elasticity
float elasticity
Definition: vf_limitdiff.c:37
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:105
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
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:483
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:485
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:887
diff
static av_always_inline int diff(const struct color_info *a, const struct color_info *b, const int trans_thresh)
Definition: vf_paletteuse.c:165
limitdiff_options
static const AVOption limitdiff_options[]
Definition: vf_limitdiff.c:58
LimitDiffContext::fs
FFFrameSync fs
Definition: vf_limitdiff.c:47
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:518
ThreadData::filtered
AVFrame * filtered
Definition: vf_limitdiff.c:30
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:248
LimitDiffContext::thr2
int thr2
Definition: vf_limitdiff.c:41
activate
static int activate(AVFilterContext *ctx)
Definition: vf_limitdiff.c:304
TFLAGS
#define TFLAGS
Definition: vf_limitdiff.c:55
LimitDiffContext::planes
int planes
Definition: vf_limitdiff.c:39
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:495
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_limitdiff.c:127
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:827
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_limitdiff.c:66
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_limitdiff.c:338
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:477
AVFilter
Filter definition.
Definition: avfilter.h:166
ThreadData::reference
AVFrame * reference
Definition: vf_limitdiff.c:30
ret
ret
Definition: filter_design.txt:187
LimitDiffContext
Definition: vf_limitdiff.c:33
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:515
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:86
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:482
FLAGS
#define FLAGS
Definition: vf_limitdiff.c:56
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:487
LimitDiffContext::planewidth
int planewidth[4]
Definition: vf_limitdiff.c:44
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:107
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:519
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:245
avfilter.h
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: dec.c:699
av_clip_uint8
#define av_clip_uint8
Definition: common.h:105
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:407
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:117
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:77
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:261
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
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
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:155
imgutils.h
LimitDiffContext::linesize
int linesize[4]
Definition: vf_limitdiff.c:43
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
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:112
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:484
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:488
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:358
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:460
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:134
LimitDiffContext::thr1
int thr1
Definition: vf_limitdiff.c:41
limitdiff_slice
static int limitdiff_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_limitdiff.c:158
OFFSET
#define OFFSET(x)
Definition: vf_limitdiff.c:54
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
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:486