FFmpeg
vf_chromanr.c
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1 /*
2  * Copyright (c) 2020 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/avstring.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30 
31 typedef struct ChromaNRContext {
32  const AVClass *class;
33 
34  float threshold;
35  float threshold_y;
36  float threshold_u;
37  float threshold_v;
38  int distance;
39  int thres;
40  int thres_y;
41  int thres_u;
42  int thres_v;
43  int sizew;
44  int sizeh;
45  int stepw;
46  int steph;
47  int depth;
48  int chroma_w;
49  int chroma_h;
50  int nb_planes;
51  int linesize[4];
52  int planeheight[4];
53  int planewidth[4];
54 
56  int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
58 
60 {
61  static const enum AVPixelFormat pix_fmts[] = {
75  };
76 
78  if (!fmts_list)
79  return AVERROR(ENOMEM);
80  return ff_set_common_formats(ctx, fmts_list);
81 }
82 
83 #define SQR(x) ((x)*(x))
84 
85 #define FILTER_FUNC(distance, name, ctype, type, fun) \
86 static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \
87  int jobnr, int nb_jobs) \
88 { \
89  ChromaNRContext *s = ctx->priv; \
90  AVFrame *in = arg; \
91  AVFrame *out = s->out; \
92  const int in_ylinesize = in->linesize[0]; \
93  const int in_ulinesize = in->linesize[1]; \
94  const int in_vlinesize = in->linesize[2]; \
95  const int out_ulinesize = out->linesize[1]; \
96  const int out_vlinesize = out->linesize[2]; \
97  const int chroma_w = s->chroma_w; \
98  const int chroma_h = s->chroma_h; \
99  const int stepw = s->stepw; \
100  const int steph = s->steph; \
101  const int sizew = s->sizew; \
102  const int sizeh = s->sizeh; \
103  const int thres = s->thres; \
104  const int thres_y = s->thres_y; \
105  const int thres_u = s->thres_u; \
106  const int thres_v = s->thres_v; \
107  const int h = s->planeheight[1]; \
108  const int w = s->planewidth[1]; \
109  const int slice_start = (h * jobnr) / nb_jobs; \
110  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
111  type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \
112  type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \
113  \
114  { \
115  const int h = s->planeheight[0]; \
116  const int slice_start = (h * jobnr) / nb_jobs; \
117  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
118  \
119  av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \
120  out->linesize[0], \
121  in->data[0] + slice_start * in->linesize[0], \
122  in->linesize[0], \
123  s->linesize[0], slice_end - slice_start); \
124  \
125  if (s->nb_planes == 4) { \
126  av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \
127  out->linesize[3], \
128  in->data[3] + slice_start * in->linesize[3], \
129  in->linesize[3], \
130  s->linesize[3], slice_end - slice_start); \
131  } \
132  } \
133  \
134  for (int y = slice_start; y < slice_end; y++) { \
135  const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
136  const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \
137  const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \
138  \
139  for (int x = 0; x < w; x++) { \
140  const int cy = in_yptr[x * chroma_w]; \
141  const int cu = in_uptr[x]; \
142  const int cv = in_vptr[x]; \
143  int su = cu; \
144  int sv = cv; \
145  int cn = 1; \
146  \
147  for (int yy = FFMAX(0, y - sizeh); yy < FFMIN(y + sizeh, h); yy += steph) { \
148  const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
149  const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \
150  const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \
151  \
152  for (int xx = FFMAX(0, x - sizew); xx < FFMIN(x + sizew, w); xx += stepw) { \
153  const ctype Y = in_yptr[xx * chroma_w]; \
154  const ctype U = in_uptr[xx]; \
155  const ctype V = in_vptr[xx]; \
156  \
157  if (fun(cu - U) + fun(cv - V) + fun(cy - Y) < thres && \
158  fun(cu - U) < thres_u && fun(cv - V) < thres_v && \
159  fun(cy - Y) < thres_y && \
160  xx != x && yy != y) { \
161  su += U; \
162  sv += V; \
163  cn++; \
164  } \
165  } \
166  } \
167  \
168  out_uptr[x] = su / cn; \
169  out_vptr[x] = sv / cn; \
170  } \
171  \
172  out_uptr += out_ulinesize / sizeof(type); \
173  out_vptr += out_vlinesize / sizeof(type); \
174  } \
175  \
176  return 0; \
177 }
178 
179 FILTER_FUNC(manhattan, 8, int, uint8_t, FFABS)
180 FILTER_FUNC(manhattan, 16, int, uint16_t, FFABS)
181 
182 FILTER_FUNC(euclidean, 8, int, uint8_t, SQR)
183 FILTER_FUNC(euclidean, 16, int64_t, uint16_t, SQR)
184 
186 {
187  AVFilterContext *ctx = inlink->dst;
188  AVFilterLink *outlink = ctx->outputs[0];
189  ChromaNRContext *s = ctx->priv;
190  AVFrame *out;
191 
192  switch (s->distance) {
193  case 0:
194  s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16;
195  break;
196  case 1:
197  s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16;
198  break;
199  }
200 
201  s->thres = s->threshold * (1 << (s->depth - 8));
202  s->thres_y = s->threshold_y * (1 << (s->depth - 8));
203  s->thres_u = s->threshold_u * (1 << (s->depth - 8));
204  s->thres_v = s->threshold_v * (1 << (s->depth - 8));
205 
206  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
207  if (!out) {
208  av_frame_free(&in);
209  return AVERROR(ENOMEM);
210  }
211 
213  s->out = out;
214  ctx->internal->execute(ctx, s->filter_slice, in, NULL,
215  FFMIN3(s->planeheight[1],
216  s->planeheight[2],
218 
219  av_frame_free(&in);
220  return ff_filter_frame(outlink, out);
221 }
222 
224 {
225  AVFilterContext *ctx = inlink->dst;
226  ChromaNRContext *s = ctx->priv;
228  int ret;
229 
230  s->nb_planes = desc->nb_components;
231  s->depth = desc->comp[0].depth;
232  s->chroma_w = 1 << desc->log2_chroma_w;
233  s->chroma_h = 1 << desc->log2_chroma_h;
234  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
235  s->planeheight[0] = s->planeheight[3] = inlink->h;
236  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
237  s->planewidth[0] = s->planewidth[3] = inlink->w;
238 
239  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
240  return ret;
241 
242  return 0;
243 }
244 
245 #define OFFSET(x) offsetof(ChromaNRContext, x)
246 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
247 
248 static const AVOption chromanr_options[] = {
249  { "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 5000, VF },
250  { "sizew", "set horizontal size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
251  { "sizeh", "set vertical size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
252  { "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
253  { "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
254  { "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
255  { "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
256  { "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
257  { "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, "distance" },
258  { "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "distance" },
259  { "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, "distance" },
260  { NULL }
261 };
262 
263 static const AVFilterPad inputs[] = {
264  {
265  .name = "default",
266  .type = AVMEDIA_TYPE_VIDEO,
267  .filter_frame = filter_frame,
268  .config_props = config_input,
269  },
270  { NULL }
271 };
272 
273 static const AVFilterPad outputs[] = {
274  {
275  .name = "default",
276  .type = AVMEDIA_TYPE_VIDEO,
277  },
278  { NULL }
279 };
280 
281 AVFILTER_DEFINE_CLASS(chromanr);
282 
284  .name = "chromanr",
285  .description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
286  .priv_size = sizeof(ChromaNRContext),
287  .priv_class = &chromanr_class,
289  .outputs = outputs,
290  .inputs = inputs,
293 };
chromanr_options
static const AVOption chromanr_options[]
Definition: vf_chromanr.c:248
ChromaNRContext::thres_y
int thres_y
Definition: vf_chromanr.c:40
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:97
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
ChromaNRContext::distance
int distance
Definition: vf_chromanr.c:38
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:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:424
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:431
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
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
ChromaNRContext::steph
int steph
Definition: vf_chromanr.c:46
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
video.h
AVFormatContext::internal
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1565
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_chromanr.c:185
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
ff_vf_chromanr
const AVFilter ff_vf_chromanr
Definition: vf_chromanr.c:283
SQR
#define SQR(x)
Definition: vf_chromanr.c:83
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
ChromaNRContext::threshold_v
float threshold_v
Definition: vf_chromanr.c:37
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
ChromaNRContext::threshold
float threshold
Definition: vf_chromanr.c:34
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_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:401
ff_set_common_formats
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:580
ChromaNRContext::linesize
int linesize[4]
Definition: vf_chromanr.c:51
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_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_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:402
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
ChromaNRContext::planewidth
int planewidth[4]
Definition: vf_chromanr.c:53
VF
#define VF
Definition: vf_chromanr.c:246
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_chromanr.c:223
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:430
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
ctx
AVFormatContext * ctx
Definition: movenc.c:48
ChromaNRContext::filter_slice
int(* filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_chromanr.c:56
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
ChromaNRContext::depth
int depth
Definition: vf_chromanr.c:47
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
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:65
outputs
static const AVFilterPad outputs[]
Definition: vf_chromanr.c:273
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
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
ChromaNRContext::out
AVFrame * out
Definition: vf_chromanr.c:55
ChromaNRContext::nb_planes
int nb_planes
Definition: vf_chromanr.c:50
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:391
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
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:116
inputs
static const AVFilterPad inputs[]
Definition: vf_chromanr.c:263
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_acrusher.c:336
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
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:842
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:428
ChromaNRContext::thres
int thres
Definition: vf_chromanr.c:39
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:126
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:227
FFMIN3
#define FFMIN3(a, b, c)
Definition: macros.h:50
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:762
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:60
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
ChromaNRContext::threshold_u
float threshold_u
Definition: vf_chromanr.c:36
AVFilter
Filter definition.
Definition: avfilter.h:145
ret
ret
Definition: filter_design.txt:187
ChromaNRContext
Definition: vf_chromanr.c:31
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:398
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_chromanr.c:59
ChromaNRContext::planeheight
int planeheight[4]
Definition: vf_chromanr.c:52
FILTER_FUNC
#define FILTER_FUNC(distance, name, ctype, type, fun)
Definition: vf_chromanr.c:85
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:429
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
OFFSET
#define OFFSET(x)
Definition: vf_chromanr.c:245
avfilter.h
ChromaNRContext::sizew
int sizew
Definition: vf_chromanr.c:43
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(chromanr)
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
ChromaNRContext::sizeh
int sizeh
Definition: vf_chromanr.c:44
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
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: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
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
distance
static float distance(float x, float y, int band)
Definition: nellymoserenc.c:233
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:395
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:399
avstring.h
int
int
Definition: ffmpeg_filter.c:156
ChromaNRContext::stepw
int stepw
Definition: vf_chromanr.c:45
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
ChromaNRContext::thres_u
int thres_u
Definition: vf_chromanr.c:41
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:397
ChromaNRContext::threshold_y
float threshold_y
Definition: vf_chromanr.c:35
ChromaNRContext::chroma_h
int chroma_h
Definition: vf_chromanr.c:49
ChromaNRContext::thres_v
int thres_v
Definition: vf_chromanr.c:42
ChromaNRContext::chroma_w
int chroma_w
Definition: vf_chromanr.c:48