FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_chromanr.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 0 56 0.0%
Functions: 0 10 0.0%
Branches: 0 146 0.0%

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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/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24
25 #include "avfilter.h"
26 #include "internal.h"
27 #include "video.h"
28
29 typedef struct ChromaNRContext {
30 const AVClass *class;
31
32 float threshold;
33 float threshold_y;
34 float threshold_u;
35 float threshold_v;
36 int distance;
37 int thres;
38 int thres_y;
39 int thres_u;
40 int thres_v;
41 int sizew;
42 int sizeh;
43 int stepw;
44 int steph;
45 int depth;
46 int chroma_w;
47 int chroma_h;
48 int nb_planes;
49 int linesize[4];
50 int planeheight[4];
51 int planewidth[4];
52
53 AVFrame *out;
54 int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
55 } ChromaNRContext;
56
57 static const enum AVPixelFormat pix_fmts[] = {
58 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV444P,
59 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
60 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
61 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
62 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10,
63 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12,
64 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
65 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
66 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
67 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
68 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
69 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
70 AV_PIX_FMT_NONE
71 };
72
73 #define MANHATTAN_DISTANCE(x, y, z) ((x) + (y) + (z))
74 #define EUCLIDEAN_DISTANCE(x, y, z) (sqrtf((x)*(x) + (y)*(y) + (z)*(z)))
75
76 #define FILTER_FUNC(distance, name, ctype, type, fun, extra) \
77 static int distance ## _slice##name(AVFilterContext *ctx, void *arg, \
78 int jobnr, int nb_jobs) \
79 { \
80 ChromaNRContext *s = ctx->priv; \
81 AVFrame *in = arg; \
82 AVFrame *out = s->out; \
83 const int in_ylinesize = in->linesize[0]; \
84 const int in_ulinesize = in->linesize[1]; \
85 const int in_vlinesize = in->linesize[2]; \
86 const int out_ulinesize = out->linesize[1]; \
87 const int out_vlinesize = out->linesize[2]; \
88 const int chroma_w = s->chroma_w; \
89 const int chroma_h = s->chroma_h; \
90 const int stepw = s->stepw; \
91 const int steph = s->steph; \
92 const int sizew = s->sizew; \
93 const int sizeh = s->sizeh; \
94 const int thres = s->thres; \
95 const int thres_y = s->thres_y; \
96 const int thres_u = s->thres_u; \
97 const int thres_v = s->thres_v; \
98 const int h = s->planeheight[1]; \
99 const int w = s->planewidth[1]; \
100 const int slice_start = (h * jobnr) / nb_jobs; \
101 const int slice_end = (h * (jobnr+1)) / nb_jobs; \
102 type *out_uptr = (type *)(out->data[1] + slice_start * out_ulinesize); \
103 type *out_vptr = (type *)(out->data[2] + slice_start * out_vlinesize); \
104 \
105 { \
106 const int h = s->planeheight[0]; \
107 const int slice_start = (h * jobnr) / nb_jobs; \
108 const int slice_end = (h * (jobnr+1)) / nb_jobs; \
109 \
110 av_image_copy_plane(out->data[0] + slice_start * out->linesize[0], \
111 out->linesize[0], \
112 in->data[0] + slice_start * in->linesize[0], \
113 in->linesize[0], \
114 s->linesize[0], slice_end - slice_start); \
115 \
116 if (s->nb_planes == 4) { \
117 av_image_copy_plane(out->data[3] + slice_start * out->linesize[3], \
118 out->linesize[3], \
119 in->data[3] + slice_start * in->linesize[3], \
120 in->linesize[3], \
121 s->linesize[3], slice_end - slice_start); \
122 } \
123 } \
124 \
125 for (int y = slice_start; y < slice_end; y++) { \
126 const type *in_yptr = (const type *)(in->data[0] + y * chroma_h * in_ylinesize); \
127 const type *in_uptr = (const type *)(in->data[1] + y * in_ulinesize); \
128 const type *in_vptr = (const type *)(in->data[2] + y * in_vlinesize); \
129 const int yystart = FFMAX(0, y - sizeh); \
130 const int yystop = FFMIN(h - 1, y + sizeh); \
131 \
132 for (int x = 0; x < w; x++) { \
133 const int xxstart = FFMAX(0, x - sizew); \
134 const int xxstop = FFMIN(w - 1, x + sizew); \
135 const int cy = in_yptr[x * chroma_w]; \
136 const int cu = in_uptr[x]; \
137 const int cv = in_vptr[x]; \
138 int su = cu; \
139 int sv = cv; \
140 int cn = 1; \
141 \
142 for (int yy = yystart; yy <= yystop; yy += steph) { \
143 const type *in_yptr = (const type *)(in->data[0] + yy * chroma_h * in_ylinesize); \
144 const type *in_uptr = (const type *)(in->data[1] + yy * in_ulinesize); \
145 const type *in_vptr = (const type *)(in->data[2] + yy * in_vlinesize); \
146 \
147 for (int xx = xxstart; xx <= xxstop; xx += stepw) { \
148 const ctype Y = in_yptr[xx * chroma_w]; \
149 const ctype U = in_uptr[xx]; \
150 const ctype V = in_vptr[xx]; \
151 const ctype cyY = FFABS(cy - Y); \
152 const ctype cuU = FFABS(cu - U); \
153 const ctype cvV = FFABS(cv - V); \
154 \
155 if (extra && fun(cyY, cuU, cvV) < thres && \
156 cuU < thres_u && cvV < thres_v && \
157 cyY < thres_y) { \
158 su += U; \
159 sv += V; \
160 cn++; \
161 } else if (!extra && fun(cyY, cuU, cvV) < thres) { \
162 su += U; \
163 sv += V; \
164 cn++; \
165 } \
166 } \
167 } \
168 \
169 out_uptr[x] = (su + (cn >> 1)) / cn; \
170 out_vptr[x] = (sv + (cn >> 1)) / cn; \
171 } \
172 \
173 out_uptr += out_ulinesize / sizeof(type); \
174 out_vptr += out_vlinesize / sizeof(type); \
175 } \
176 \
177 return 0; \
178 }
179
180 FILTER_FUNC(manhattan, 8, int, uint8_t, MANHATTAN_DISTANCE, 0)
181 FILTER_FUNC(manhattan, 16, int, uint16_t, MANHATTAN_DISTANCE, 0)
182
183 FILTER_FUNC(euclidean, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 0)
184 FILTER_FUNC(euclidean, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 0)
185
186 FILTER_FUNC(manhattan_e, 8, int, uint8_t, MANHATTAN_DISTANCE, 1)
187 FILTER_FUNC(manhattan_e, 16, int, uint16_t, MANHATTAN_DISTANCE, 1)
188
189 FILTER_FUNC(euclidean_e, 8, int, uint8_t, EUCLIDEAN_DISTANCE, 1)
190 FILTER_FUNC(euclidean_e, 16, int64_t, uint16_t, EUCLIDEAN_DISTANCE, 1)
191
192 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
193 {
194 AVFilterContext *ctx = inlink->dst;
195 AVFilterLink *outlink = ctx->outputs[0];
196 ChromaNRContext *s = ctx->priv;
197 AVFrame *out;
198
199 switch (s->distance) {
200 case 0:
201 s->filter_slice = s->depth <= 8 ? manhattan_slice8 : manhattan_slice16;
202 break;
203 case 1:
204 s->filter_slice = s->depth <= 8 ? euclidean_slice8 : euclidean_slice16;
205 break;
206 }
207
208 s->thres = s->threshold * (1 << (s->depth - 8));
209 s->thres_y = s->threshold_y * (1 << (s->depth - 8));
210 s->thres_u = s->threshold_u * (1 << (s->depth - 8));
211 s->thres_v = s->threshold_v * (1 << (s->depth - 8));
212
213 if (s->threshold_y < 200.f || s->threshold_u < 200.f || s->threshold_v < 200.f) {
214 switch (s->distance) {
215 case 0:
216 s->filter_slice = s->depth <= 8 ? manhattan_e_slice8 : manhattan_e_slice16;
217 break;
218 case 1:
219 s->filter_slice = s->depth <= 8 ? euclidean_e_slice8 : euclidean_e_slice16;
220 break;
221 }
222 }
223
224 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
225 if (!out) {
226 av_frame_free(&in);
227 return AVERROR(ENOMEM);
228 }
229
230 av_frame_copy_props(out, in);
231 s->out = out;
232 ff_filter_execute(ctx, s->filter_slice, in, NULL,
233 FFMIN3(s->planeheight[1],
234 s->planeheight[2],
235 ff_filter_get_nb_threads(ctx)));
236
237 av_frame_free(&in);
238 return ff_filter_frame(outlink, out);
239 }
240
241 static int config_input(AVFilterLink *inlink)
242 {
243 AVFilterContext *ctx = inlink->dst;
244 ChromaNRContext *s = ctx->priv;
245 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
246 int ret;
247
248 s->nb_planes = desc->nb_components;
249 s->depth = desc->comp[0].depth;
250 s->chroma_w = 1 << desc->log2_chroma_w;
251 s->chroma_h = 1 << desc->log2_chroma_h;
252 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
253 s->planeheight[0] = s->planeheight[3] = inlink->h;
254 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
255 s->planewidth[0] = s->planewidth[3] = inlink->w;
256
257 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
258 return ret;
259
260 return 0;
261 }
262
263 #define OFFSET(x) offsetof(ChromaNRContext, x)
264 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
265
266 static const AVOption chromanr_options[] = {
267 { "thres", "set y+u+v threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=30}, 1, 200, VF },
268 { "sizew", "set horizontal patch size", OFFSET(sizew), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
269 { "sizeh", "set vertical patch size", OFFSET(sizeh), AV_OPT_TYPE_INT, {.i64=5}, 1, 100, VF },
270 { "stepw", "set horizontal step", OFFSET(stepw), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
271 { "steph", "set vertical step", OFFSET(steph), AV_OPT_TYPE_INT, {.i64=1}, 1, 50, VF },
272 { "threy", "set y threshold", OFFSET(threshold_y), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
273 { "threu", "set u threshold", OFFSET(threshold_u), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
274 { "threv", "set v threshold", OFFSET(threshold_v), AV_OPT_TYPE_FLOAT, {.dbl=200},1, 200, VF },
275 { "distance", "set distance type", OFFSET(distance), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, VF, .unit = "distance" },
276 { "manhattan", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, .unit = "distance" },
277 { "euclidean", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VF, .unit = "distance" },
278 { NULL }
279 };
280
281 static const AVFilterPad inputs[] = {
282 {
283 .name = "default",
284 .type = AVMEDIA_TYPE_VIDEO,
285 .filter_frame = filter_frame,
286 .config_props = config_input,
287 },
288 };
289
290 AVFILTER_DEFINE_CLASS(chromanr);
291
292 const AVFilter ff_vf_chromanr = {
293 .name = "chromanr",
294 .description = NULL_IF_CONFIG_SMALL("Reduce chrominance noise."),
295 .priv_size = sizeof(ChromaNRContext),
296 .priv_class = &chromanr_class,
297 FILTER_OUTPUTS(ff_video_default_filterpad),
298 FILTER_INPUTS(inputs),
299 FILTER_PIXFMTS_ARRAY(pix_fmts),
300 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
301 .process_command = ff_filter_process_command,
302 };
303