1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
/*
* Copyright (c) 2020 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct ChromaNRContext {
const AVClass *class;
float threshold;
float threshold_y;
float threshold_u;
float threshold_v;
int distance;
int thres;
int thres_y;
int thres_u;
int thres_v;
int sizew;
int sizeh;
int stepw;
int steph;
int depth;
int chroma_w;
int chroma_h;
int nb_planes;
int linesize[4];
int planeheight[4];
int planewidth[4];
AVFrame *out;
int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ChromaNRContext;
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12,
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_NONE
};
#define MANHATTAN_DISTANCE(x, y, z) ((x) + (y) + (z))
#define EUCLIDEAN_DISTANCE(x, y, z) (sqrtf((x)*(x) + (y)*(y) + (z)*(z)))
#define FILTER_FUNC(distance, name, ctype, type, fun, extra) \
static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \
int jobnr, int nb_jobs) \
{ \
ChromaNRContext *s = ctx->priv; \
AVFrame *in = arg; \
AVFrame *out = s->out; \
const int in_ylinesize = in->linesize[0]; \
const int in_ulinesize = in->linesize[1]; \
const int in_vlinesize = in->linesize[2]; \
const int out_ulinesize = out->linesize[1]; \
const int out_vlinesize = out->linesize[2]; \
const int chroma_w = s->chroma_w; \
const int chroma_h = s->chroma_h; \
const int stepw = s->stepw; \
const int steph = s->steph; \
const int sizew = s->sizew; \
const int sizeh = s->sizeh; \
const int thres = s->thres; \
const int thres_y = s->thres_y; \
const int thres_u = s->thres_u; \
const int thres_v = s->thres_v; \
const int h = s->planeheight[1]; \
const int w = s->planewidth[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \
type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \
\
{ \
const int h = s->planeheight[0]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
\
av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \
out->linesize[0], \
in->data[0] + slice_start * in->linesize[0], \
in->linesize[0], \
s->linesize[0], slice_end - slice_start); \
\
if (s->nb_planes == 4) { \
av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \
out->linesize[3], \
in->data[3] + slice_start * in->linesize[3], \
in->linesize[3], \
s->linesize[3], slice_end - slice_start); \
} \
} \
\
for (int y = slice_start; y < slice_end; y++) { \
const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \
const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \
const int yystart = FFMAX(0, y - sizeh); \
const int yystop = FFMIN(h - 1, y + sizeh); \
\
for (int x = 0; x < w; x++) { \
const int xxstart = FFMAX(0, x - sizew); \
const int xxstop = FFMIN(w - 1, x + sizew); \
const int cy = in_yptr[x * chroma_w]; \
const int cu = in_uptr[x]; \
const int cv = in_vptr[x]; \
int su = cu; \
int sv = cv; \
int cn = 1; \
\
for (int yy = yystart; yy <= yystop; yy += steph) { \
const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \
const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \
\
for (int xx = xxstart; xx <= xxstop; xx += stepw) { \
const ctype Y = in_yptr[xx * chroma_w]; \
const ctype U = in_uptr[xx]; \
const ctype V = in_vptr[xx]; \
const ctype cyY = FFABS(cy - Y); \
const ctype cuU = FFABS(cu - U); \
const ctype cvV = FFABS(cv - V); \
\
if (extra && fun(cyY, cuU, cvV) < thres && \
cuU < thres_u && cvV < thres_v && \
cyY < thres_y) { \
su += U; \
sv += V; \
cn++; \
} else if (!extra && fun(cyY, cuU, cvV) < thres) { \
su += U; \
sv += V; \
cn++; \
} \
} \
} \
\
out_uptr[x] = (su + (cn >> 1)) / cn; \
out_vptr[x] = (sv + (cn >> 1)) / cn; \
} \
\
out_uptr += out_ulinesize / sizeof(type); \
out_vptr += out_vlinesize / sizeof(type); \
} \
\
return 0; \
}
FILTER_FUNC(manhattan, 8, int, uint8_t, MANHATTAN_DISTANCE, 0)
FILTER_FUNC(manhattan, 16, int, uint16_t, MANHATTAN_DISTANCE, 0)
FILTER_FUNC(euclidean, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 0)
FILTER_FUNC(euclidean, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 0)
FILTER_FUNC(manhattan_e, 8, int, uint8_t, MANHATTAN_DISTANCE, 1)
FILTER_FUNC(manhattan_e, 16, int, uint16_t, MANHATTAN_DISTANCE, 1)
FILTER_FUNC(euclidean_e, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 1)
FILTER_FUNC(euclidean_e, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 1)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ChromaNRContext *s = ctx->priv;
AVFrame *out;
switch (s->distance) {
case 0:
s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16;
break;
case 1:
s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16;
break;
}
s->thres = s->threshold * (1 << (s->depth - 8));
s->thres_y = s->threshold_y * (1 << (s->depth - 8));
s->thres_u = s->threshold_u * (1 << (s->depth - 8));
s->thres_v = s->threshold_v * (1 << (s->depth - 8));
if (s->threshold_y < 200.f || s->threshold_u < 200.f || s->threshold_v < 200.f) {
switch (s->distance) {
case 0:
s->filter_slice = s->depth <= 8 ? manhattan_e_slice8 : manhattan_e_slice16;
break;
case 1:
s->filter_slice = s->depth <= 8 ? euclidean_e_slice8 : euclidean_e_slice16;
break;
}
}
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
s->out = out;
ff_filter_execute(ctx, s->filter_slice, in, NULL,
FFMIN3(s->planeheight[1],
s->planeheight[2],
ff_filter_get_nb_threads(ctx)));
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ChromaNRContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int ret;
s->nb_planes = desc->nb_components;
s->depth = desc->comp[0].depth;
s->chroma_w = 1 << desc->log2_chroma_w;
s->chroma_h = 1 << desc->log2_chroma_h;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
return ret;
return 0;
}
#define OFFSET(x) offsetof(ChromaNRContext, x)
#define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption chromanr_options[] = {
{ "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF },
{ "sizew", "set horizontal patch size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
{ "sizeh", "set vertical patch size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
{ "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
{ "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
{ "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
{ "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
{ "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
{ "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, "distance" },
{ "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "distance" },
{ "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, "distance" },
{ NULL }
};
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
};
AVFILTER_DEFINE_CLASS(chromanr);
const AVFilter ff_vf_chromanr = {
.name = "chromanr",
.description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
.priv_size = sizeof(ChromaNRContext),
.priv_class = &chromanr_class,
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_INPUTS(inputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = ff_filter_process_command,
};
|
