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 
59 static const enum AVPixelFormat pix_fmts[] = {
73 };
74 
75 #define MANHATTAN_DISTANCE(x, y, z) ((x) + (y) + (z))
76 #define EUCLIDEAN_DISTANCE(x, y, z) (sqrtf((x)*(x) + (y)*(y) + (z)*(z)))
77 
78 #define FILTER_FUNC(distance, name, ctype, type, fun) \
79 static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \
80  int jobnr, int nb_jobs) \
81 { \
82  ChromaNRContext *s = ctx->priv; \
83  AVFrame *in = arg; \
84  AVFrame *out = s->out; \
85  const int in_ylinesize = in->linesize[0]; \
86  const int in_ulinesize = in->linesize[1]; \
87  const int in_vlinesize = in->linesize[2]; \
88  const int out_ulinesize = out->linesize[1]; \
89  const int out_vlinesize = out->linesize[2]; \
90  const int chroma_w = s->chroma_w; \
91  const int chroma_h = s->chroma_h; \
92  const int stepw = s->stepw; \
93  const int steph = s->steph; \
94  const int sizew = s->sizew; \
95  const int sizeh = s->sizeh; \
96  const int thres = s->thres; \
97  const int thres_y = s->thres_y; \
98  const int thres_u = s->thres_u; \
99  const int thres_v = s->thres_v; \
100  const int h = s->planeheight[1]; \
101  const int w = s->planewidth[1]; \
102  const int slice_start = (h * jobnr) / nb_jobs; \
103  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
104  type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \
105  type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \
106  \
107  { \
108  const int h = s->planeheight[0]; \
109  const int slice_start = (h * jobnr) / nb_jobs; \
110  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
111  \
112  av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \
113  out->linesize[0], \
114  in->data[0] + slice_start * in->linesize[0], \
115  in->linesize[0], \
116  s->linesize[0], slice_end - slice_start); \
117  \
118  if (s->nb_planes == 4) { \
119  av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \
120  out->linesize[3], \
121  in->data[3] + slice_start * in->linesize[3], \
122  in->linesize[3], \
123  s->linesize[3], slice_end - slice_start); \
124  } \
125  } \
126  \
127  for (int y = slice_start; y < slice_end; y++) { \
128  const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
129  const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \
130  const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \
131  \
132  for (int x = 0; x < w; x++) { \
133  const int cy = in_yptr[x * chroma_w]; \
134  const int cu = in_uptr[x]; \
135  const int cv = in_vptr[x]; \
136  int su = cu; \
137  int sv = cv; \
138  int cn = 1; \
139  \
140  for (int yy = FFMAX(0, y - sizeh); yy <= FFMIN(y + sizeh, h - 1); yy += steph) { \
141  const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
142  const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \
143  const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \
144  \
145  for (int xx = FFMAX(0, x - sizew); xx <= FFMIN(x + sizew, w - 1); xx += stepw) { \
146  const ctype Y = in_yptr[xx * chroma_w]; \
147  const ctype U = in_uptr[xx]; \
148  const ctype V = in_vptr[xx]; \
149  const ctype cyY = FFABS(cy - Y); \
150  const ctype cuU = FFABS(cu - U); \
151  const ctype cvV = FFABS(cv - V); \
152  \
153  if (fun(cyY, cuU, cvV) < thres && \
154  cuU < thres_u && cvV < thres_v && \
155  cyY < thres_y && \
156  xx != x && yy != y) { \
157  su += U; \
158  sv += V; \
159  cn++; \
160  } \
161  } \
162  } \
163  \
164  out_uptr[x] = (su + (cn >> 1)) / cn; \
165  out_vptr[x] = (sv + (cn >> 1)) / cn; \
166  } \
167  \
168  out_uptr += out_ulinesize / sizeof(type); \
169  out_vptr += out_vlinesize / sizeof(type); \
170  } \
171  \
172  return 0; \
173 }
174 
175 FILTER_FUNC(manhattan, 8, int, uint8_t, MANHATTAN_DISTANCE)
176 FILTER_FUNC(manhattan, 16, int, uint16_t, MANHATTAN_DISTANCE)
177 
178 FILTER_FUNC(euclidean, 8, int, uint8_t, EUCLIDEAN_DISTANCE)
179 FILTER_FUNC(euclidean, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE)
180 
182 {
183  AVFilterContext *ctx = inlink->dst;
184  AVFilterLink *outlink = ctx->outputs[0];
185  ChromaNRContext *s = ctx->priv;
186  AVFrame *out;
187 
188  switch (s->distance) {
189  case 0:
190  s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16;
191  break;
192  case 1:
193  s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16;
194  break;
195  }
196 
197  s->thres = s->threshold * (1 << (s->depth - 8));
198  s->thres_y = s->threshold_y * (1 << (s->depth - 8));
199  s->thres_u = s->threshold_u * (1 << (s->depth - 8));
200  s->thres_v = s->threshold_v * (1 << (s->depth - 8));
201 
202  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
203  if (!out) {
204  av_frame_free(&in);
205  return AVERROR(ENOMEM);
206  }
207 
209  s->out = out;
210  ff_filter_execute(ctx, s->filter_slice, in, NULL,
211  FFMIN3(s->planeheight[1],
212  s->planeheight[2],
214 
215  av_frame_free(&in);
216  return ff_filter_frame(outlink, out);
217 }
218 
220 {
221  AVFilterContext *ctx = inlink->dst;
222  ChromaNRContext *s = ctx->priv;
224  int ret;
225 
226  s->nb_planes = desc->nb_components;
227  s->depth = desc->comp[0].depth;
228  s->chroma_w = 1 << desc->log2_chroma_w;
229  s->chroma_h = 1 << desc->log2_chroma_h;
230  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
231  s->planeheight[0] = s->planeheight[3] = inlink->h;
232  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
233  s->planewidth[0] = s->planewidth[3] = inlink->w;
234 
235  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
236  return ret;
237 
238  return 0;
239 }
240 
241 #define OFFSET(x) offsetof(ChromaNRContext, x)
242 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
243 
244 static const AVOption chromanr_options[] = {
245  { "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF },
246  { "sizew", "set horizontal size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
247  { "sizeh", "set vertical size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
248  { "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
249  { "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
250  { "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
251  { "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
252  { "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
253  { "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, "distance" },
254  { "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "distance" },
255  { "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, "distance" },
256  { NULL }
257 };
258 
259 static const AVFilterPad inputs[] = {
260  {
261  .name = "default",
262  .type = AVMEDIA_TYPE_VIDEO,
263  .filter_frame = filter_frame,
264  .config_props = config_input,
265  },
266 };
267 
268 static const AVFilterPad outputs[] = {
269  {
270  .name = "default",
271  .type = AVMEDIA_TYPE_VIDEO,
272  },
273 };
274 
275 AVFILTER_DEFINE_CLASS(chromanr);
276 
278  .name = "chromanr",
279  .description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
280  .priv_size = sizeof(ChromaNRContext),
281  .priv_class = &chromanr_class,
286  .process_command = ff_filter_process_command,
287 };
chromanr_options
static const AVOption chromanr_options[]
Definition: vf_chromanr.c:244
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:101
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:451
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
MANHATTAN_DISTANCE
#define MANHATTAN_DISTANCE(x, y, z)
Definition: vf_chromanr.c:75
opt.h
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:999
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2675
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:170
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:116
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:443
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:450
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:445
AVOption
AVOption.
Definition: opt.h:251
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:408
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:175
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:446
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_chromanr.c:181
formats.h
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:442
ff_vf_chromanr
const AVFilter ff_vf_chromanr
Definition: vf_chromanr.c:277
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:452
ChromaNRContext::threshold_v
float threshold_v
Definition: vf_chromanr.c:37
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:406
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_chromanr.c:59
EUCLIDEAN_DISTANCE
#define EUCLIDEAN_DISTANCE(x, y, z)
Definition: vf_chromanr.c:76
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:411
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:420
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:256
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:421
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
ChromaNRContext::planewidth
int planewidth[4]
Definition: vf_chromanr.c:53
VF
#define VF
Definition: vf_chromanr.c:242
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_chromanr.c:219
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:449
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:405
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:419
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
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
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
outputs
static const AVFilterPad outputs[]
Definition: vf_chromanr.c:268
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:603
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:410
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:409
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
inputs
static const AVFilterPad inputs[]
Definition: vf_chromanr.c:259
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:413
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:415
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:863
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:447
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:152
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
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:783
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:55
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:407
ChromaNRContext::threshold_u
float threshold_u
Definition: vf_chromanr.c:36
AVFilter
Filter definition.
Definition: avfilter.h:171
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:444
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:412
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:417
ChromaNRContext::planeheight
int planeheight[4]
Definition: vf_chromanr.c:52
FILTER_FUNC
#define FILTER_FUNC(distance, name, ctype, type, fun)
Definition: vf_chromanr.c:78
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:448
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
OFFSET
#define OFFSET(x)
Definition: vf_chromanr.c:241
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:408
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:127
desc
const char * desc
Definition: libsvtav1.c:83
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
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
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:228
imgutils.h
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:414
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:418
avstring.h
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:142
int
int
Definition: ffmpeg_filter.c:155
ChromaNRContext::stepw
int stepw
Definition: vf_chromanr.c:45
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
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:416
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