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 SQR(x) ((x)*(x))
76 
77 #define FILTER_FUNC(distance, name, ctype, type, fun) \
78 static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \
79  int jobnr, int nb_jobs) \
80 { \
81  ChromaNRContext *s = ctx->priv; \
82  AVFrame *in = arg; \
83  AVFrame *out = s->out; \
84  const int in_ylinesize = in->linesize[0]; \
85  const int in_ulinesize = in->linesize[1]; \
86  const int in_vlinesize = in->linesize[2]; \
87  const int out_ulinesize = out->linesize[1]; \
88  const int out_vlinesize = out->linesize[2]; \
89  const int chroma_w = s->chroma_w; \
90  const int chroma_h = s->chroma_h; \
91  const int stepw = s->stepw; \
92  const int steph = s->steph; \
93  const int sizew = s->sizew; \
94  const int sizeh = s->sizeh; \
95  const int thres = s->thres; \
96  const int thres_y = s->thres_y; \
97  const int thres_u = s->thres_u; \
98  const int thres_v = s->thres_v; \
99  const int h = s->planeheight[1]; \
100  const int w = s->planewidth[1]; \
101  const int slice_start = (h * jobnr) / nb_jobs; \
102  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
103  type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \
104  type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \
105  \
106  { \
107  const int h = s->planeheight[0]; \
108  const int slice_start = (h * jobnr) / nb_jobs; \
109  const int slice_end = (h * (jobnr+1)) / nb_jobs; \
110  \
111  av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \
112  out->linesize[0], \
113  in->data[0] + slice_start * in->linesize[0], \
114  in->linesize[0], \
115  s->linesize[0], slice_end - slice_start); \
116  \
117  if (s->nb_planes == 4) { \
118  av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \
119  out->linesize[3], \
120  in->data[3] + slice_start * in->linesize[3], \
121  in->linesize[3], \
122  s->linesize[3], slice_end - slice_start); \
123  } \
124  } \
125  \
126  for (int y = slice_start; y < slice_end; y++) { \
127  const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
128  const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \
129  const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \
130  \
131  for (int x = 0; x < w; x++) { \
132  const int cy = in_yptr[x * chroma_w]; \
133  const int cu = in_uptr[x]; \
134  const int cv = in_vptr[x]; \
135  int su = cu; \
136  int sv = cv; \
137  int cn = 1; \
138  \
139  for (int yy = FFMAX(0, y - sizeh); yy < FFMIN(y + sizeh, h); yy += steph) { \
140  const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
141  const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \
142  const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \
143  \
144  for (int xx = FFMAX(0, x - sizew); xx < FFMIN(x + sizew, w); xx += stepw) { \
145  const ctype Y = in_yptr[xx * chroma_w]; \
146  const ctype U = in_uptr[xx]; \
147  const ctype V = in_vptr[xx]; \
148  \
149  if (fun(cu - U) + fun(cv - V) + fun(cy - Y) < thres && \
150  fun(cu - U) < thres_u && fun(cv - V) < thres_v && \
151  fun(cy - Y) < thres_y && \
152  xx != x && yy != y) { \
153  su += U; \
154  sv += V; \
155  cn++; \
156  } \
157  } \
158  } \
159  \
160  out_uptr[x] = su / cn; \
161  out_vptr[x] = sv / cn; \
162  } \
163  \
164  out_uptr += out_ulinesize / sizeof(type); \
165  out_vptr += out_vlinesize / sizeof(type); \
166  } \
167  \
168  return 0; \
169 }
170 
171 FILTER_FUNC(manhattan, 8, int, uint8_t, FFABS)
172 FILTER_FUNC(manhattan, 16, int, uint16_t, FFABS)
173 
174 FILTER_FUNC(euclidean, 8, int, uint8_t, SQR)
175 FILTER_FUNC(euclidean, 16, int64_t, uint16_t, SQR)
176 
178 {
179  AVFilterContext *ctx = inlink->dst;
180  AVFilterLink *outlink = ctx->outputs[0];
181  ChromaNRContext *s = ctx->priv;
182  AVFrame *out;
183 
184  switch (s->distance) {
185  case 0:
186  s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16;
187  break;
188  case 1:
189  s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16;
190  break;
191  }
192 
193  s->thres = s->threshold * (1 << (s->depth - 8));
194  s->thres_y = s->threshold_y * (1 << (s->depth - 8));
195  s->thres_u = s->threshold_u * (1 << (s->depth - 8));
196  s->thres_v = s->threshold_v * (1 << (s->depth - 8));
197 
198  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
199  if (!out) {
200  av_frame_free(&in);
201  return AVERROR(ENOMEM);
202  }
203 
205  s->out = out;
206  ff_filter_execute(ctx, s->filter_slice, in, NULL,
207  FFMIN3(s->planeheight[1],
208  s->planeheight[2],
210 
211  av_frame_free(&in);
212  return ff_filter_frame(outlink, out);
213 }
214 
216 {
217  AVFilterContext *ctx = inlink->dst;
218  ChromaNRContext *s = ctx->priv;
220  int ret;
221 
222  s->nb_planes = desc->nb_components;
223  s->depth = desc->comp[0].depth;
224  s->chroma_w = 1 << desc->log2_chroma_w;
225  s->chroma_h = 1 << desc->log2_chroma_h;
226  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
227  s->planeheight[0] = s->planeheight[3] = inlink->h;
228  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
229  s->planewidth[0] = s->planewidth[3] = inlink->w;
230 
231  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
232  return ret;
233 
234  return 0;
235 }
236 
237 #define OFFSET(x) offsetof(ChromaNRContext, x)
238 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
239 
240 static const AVOption chromanr_options[] = {
241  { "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 5000, VF },
242  { "sizew", "set horizontal size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
243  { "sizeh", "set vertical size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
244  { "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
245  { "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
246  { "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
247  { "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
248  { "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=5000},1, 5000, VF },
249  { "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, "distance" },
250  { "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "distance" },
251  { "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, "distance" },
252  { NULL }
253 };
254 
255 static const AVFilterPad inputs[] = {
256  {
257  .name = "default",
258  .type = AVMEDIA_TYPE_VIDEO,
259  .filter_frame = filter_frame,
260  .config_props = config_input,
261  },
262 };
263 
264 static const AVFilterPad outputs[] = {
265  {
266  .name = "default",
267  .type = AVMEDIA_TYPE_VIDEO,
268  },
269 };
270 
271 AVFILTER_DEFINE_CLASS(chromanr);
272 
274  .name = "chromanr",
275  .description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
276  .priv_size = sizeof(ChromaNRContext),
277  .priv_class = &chromanr_class,
282  .process_command = ff_filter_process_command,
283 };
chromanr_options
static const AVOption chromanr_options[]
Definition: vf_chromanr.c:240
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:98
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:434
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
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:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
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:426
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:433
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:428
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
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:153
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:429
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_chromanr.c:177
formats.h
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:425
ff_vf_chromanr
const AVFilter ff_vf_chromanr
Definition: vf_chromanr.c:273
SQR
#define SQR(x)
Definition: vf_chromanr.c:75
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:435
ChromaNRContext::threshold_v
float threshold_v
Definition: vf_chromanr.c:37
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:389
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_chromanr.c:59
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:394
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:403
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:404
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:238
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_chromanr.c:215
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:432
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:388
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:402
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:191
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:264
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:393
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:392
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:255
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:396
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:398
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
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:430
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:130
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:803
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
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:390
ChromaNRContext::threshold_u
float threshold_u
Definition: vf_chromanr.c:36
AVFilter
Filter definition.
Definition: avfilter.h:149
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:427
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:395
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:400
ChromaNRContext::planeheight
int planeheight[4]
Definition: vf_chromanr.c:52
FILTER_FUNC
#define FILTER_FUNC(distance, name, ctype, type, fun)
Definition: vf_chromanr.c:77
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:431
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
OFFSET
#define OFFSET(x)
Definition: vf_chromanr.c:237
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:386
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
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
distance
static float distance(float x, float y, int band)
Definition: nellymoserenc.c:233
imgutils.h
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:397
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:401
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:143
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:399
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