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path: root/libavfilter/vf_deband.c (plain)
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1/*
2 * Copyright (c) 2015 Niklas Haas
3 * Copyright (c) 2015 Paul B Mahol
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#include "libavutil/opt.h"
25#include "libavutil/pixdesc.h"
26#include "avfilter.h"
27#include "internal.h"
28#include "video.h"
29
30typedef struct DebandContext {
31 const AVClass *class;
32
33 int coupling;
34 float threshold[4];
35 int range;
36 int blur;
37 float direction;
38
39 int nb_components;
40 int planewidth[4];
41 int planeheight[4];
42 int shift[2];
43 int thr[4];
44
45 int *x_pos;
46 int *y_pos;
47
48 int (*deband)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
49} DebandContext;
50
51#define OFFSET(x) offsetof(DebandContext, x)
52#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
53
54static const AVOption deband_options[] = {
55 { "1thr", "set 1st plane threshold", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
56 { "2thr", "set 2nd plane threshold", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
57 { "3thr", "set 3rd plane threshold", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
58 { "4thr", "set 4th plane threshold", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
59 { "range", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS },
60 { "r", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS },
61 { "direction", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS },
62 { "d", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS },
63 { "blur", "set blur", OFFSET(blur), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
64 { "b", "set blur", OFFSET(blur), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
65 { "coupling", "set plane coupling", OFFSET(coupling), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
66 { "c", "set plane coupling", OFFSET(coupling), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
67 { NULL }
68};
69
70AVFILTER_DEFINE_CLASS(deband);
71
72static int query_formats(AVFilterContext *ctx)
73{
74 DebandContext *s = ctx->priv;
75
76 static const enum AVPixelFormat pix_fmts[] = {
77 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
78 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
79 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
80 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
81 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ440P,
82 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
83 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
84 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
85 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
86 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
87 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
88 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
89 AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
90 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
91 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
92 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
93 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
94 AV_PIX_FMT_NONE
95 };
96
97 static const enum AVPixelFormat cpix_fmts[] = {
98 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
99 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P9,
100 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10,
101 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14,
102 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
103 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
104 AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
105 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
106 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
107 AV_PIX_FMT_NONE
108 };
109
110 AVFilterFormats *fmts_list = ff_make_format_list(s->coupling ? cpix_fmts : pix_fmts);
111 if (!fmts_list)
112 return AVERROR(ENOMEM);
113
114 return ff_set_common_formats(ctx, fmts_list);
115}
116
117static float frand(int x, int y)
118{
119 const float r = sinf(x * 12.9898 + y * 78.233) * 43758.545;
120
121 return r - floorf(r);
122}
123
124static int inline get_avg(int ref0, int ref1, int ref2, int ref3)
125{
126 return (ref0 + ref1 + ref2 + ref3) / 4;
127}
128
129typedef struct ThreadData {
130 AVFrame *in, *out;
131} ThreadData;
132
133static int deband_8_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
134{
135 DebandContext *s = ctx->priv;
136 ThreadData *td = arg;
137 AVFrame *in = td->in;
138 AVFrame *out = td->out;
139 int x, y, p;
140
141 for (p = 0; p < s->nb_components; p++) {
142 const uint8_t *src_ptr = (const uint8_t *)in->data[p];
143 uint8_t *dst_ptr = (uint8_t *)out->data[p];
144 const int dst_linesize = out->linesize[p];
145 const int src_linesize = in->linesize[p];
146 const int thr = s->thr[p];
147 const int start = (s->planeheight[p] * jobnr ) / nb_jobs;
148 const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
149 const int w = s->planewidth[p] - 1;
150 const int h = s->planeheight[p] - 1;
151
152 for (y = start; y < end; y++) {
153 const int pos = y * s->planewidth[0];
154
155 for (x = 0; x < s->planewidth[p]; x++) {
156 const int x_pos = s->x_pos[pos + x];
157 const int y_pos = s->y_pos[pos + x];
158 const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
159 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
160 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
161 const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
162 const int src0 = src_ptr[y * src_linesize + x];
163
164 if (s->blur) {
165 const int avg = get_avg(ref0, ref1, ref2, ref3);
166 const int diff = FFABS(src0 - avg);
167
168 dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
169 } else {
170 dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
171 (FFABS(src0 - ref1) < thr) &&
172 (FFABS(src0 - ref2) < thr) &&
173 (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
174 }
175 }
176 }
177 }
178
179 return 0;
180}
181
182static int deband_8_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
183{
184 DebandContext *s = ctx->priv;
185 ThreadData *td = arg;
186 AVFrame *in = td->in;
187 AVFrame *out = td->out;
188 const int start = (s->planeheight[0] * jobnr ) / nb_jobs;
189 const int end = (s->planeheight[0] * (jobnr+1)) / nb_jobs;
190 int x, y, p;
191
192 for (y = start; y < end; y++) {
193 const int pos = y * s->planewidth[0];
194
195 for (x = 0; x < s->planewidth[0]; x++) {
196 const int x_pos = s->x_pos[pos + x];
197 const int y_pos = s->y_pos[pos + x];
198 int avg[4], cmp[4] = { 0 }, src[4];
199
200 for (p = 0; p < s->nb_components; p++) {
201 const uint8_t *src_ptr = (const uint8_t *)in->data[p];
202 const int src_linesize = in->linesize[p];
203 const int thr = s->thr[p];
204 const int w = s->planewidth[p] - 1;
205 const int h = s->planeheight[p] - 1;
206 const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
207 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
208 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
209 const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
210 const int src0 = src_ptr[y * src_linesize + x];
211
212 src[p] = src0;
213 avg[p] = get_avg(ref0, ref1, ref2, ref3);
214
215 if (s->blur) {
216 cmp[p] = FFABS(src0 - avg[p]) < thr;
217 } else {
218 cmp[p] = (FFABS(src0 - ref0) < thr) &&
219 (FFABS(src0 - ref1) < thr) &&
220 (FFABS(src0 - ref2) < thr) &&
221 (FFABS(src0 - ref3) < thr);
222 }
223 }
224
225 for (p = 0; p < s->nb_components; p++)
226 if (!cmp[p])
227 break;
228 if (p == s->nb_components) {
229 for (p = 0; p < s->nb_components; p++) {
230 const int dst_linesize = out->linesize[p];
231
232 out->data[p][y * dst_linesize + x] = avg[p];
233 }
234 } else {
235 for (p = 0; p < s->nb_components; p++) {
236 const int dst_linesize = out->linesize[p];
237
238 out->data[p][y * dst_linesize + x] = src[p];
239 }
240 }
241 }
242 }
243
244 return 0;
245}
246
247static int deband_16_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
248{
249 DebandContext *s = ctx->priv;
250 ThreadData *td = arg;
251 AVFrame *in = td->in;
252 AVFrame *out = td->out;
253 const int start = (s->planeheight[0] * jobnr ) / nb_jobs;
254 const int end = (s->planeheight[0] * (jobnr+1)) / nb_jobs;
255 int x, y, p, z;
256
257 for (y = start; y < end; y++) {
258 const int pos = y * s->planewidth[0];
259
260 for (x = 0; x < s->planewidth[0]; x++) {
261 const int x_pos = s->x_pos[pos + x];
262 const int y_pos = s->y_pos[pos + x];
263 int avg[4], cmp[4] = { 0 }, src[4];
264
265 for (p = 0; p < s->nb_components; p++) {
266 const uint16_t *src_ptr = (const uint16_t *)in->data[p];
267 const int src_linesize = in->linesize[p] / 2;
268 const int thr = s->thr[p];
269 const int w = s->planewidth[p] - 1;
270 const int h = s->planeheight[p] - 1;
271 const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
272 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
273 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
274 const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
275 const int src0 = src_ptr[y * src_linesize + x];
276
277 src[p] = src0;
278 avg[p] = get_avg(ref0, ref1, ref2, ref3);
279
280 if (s->blur) {
281 cmp[p] = FFABS(src0 - avg[p]) < thr;
282 } else {
283 cmp[p] = (FFABS(src0 - ref0) < thr) &&
284 (FFABS(src0 - ref1) < thr) &&
285 (FFABS(src0 - ref2) < thr) &&
286 (FFABS(src0 - ref3) < thr);
287 }
288 }
289
290 for (z = 0; z < s->nb_components; z++)
291 if (!cmp[z])
292 break;
293 if (z == s->nb_components) {
294 for (p = 0; p < s->nb_components; p++) {
295 const int dst_linesize = out->linesize[p] / 2;
296 uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x;
297
298 dst[0] = avg[p];
299 }
300 } else {
301 for (p = 0; p < s->nb_components; p++) {
302 const int dst_linesize = out->linesize[p] / 2;
303 uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x;
304
305 dst[0] = src[p];
306 }
307 }
308 }
309 }
310
311 return 0;
312}
313
314static int deband_16_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
315{
316 DebandContext *s = ctx->priv;
317 ThreadData *td = arg;
318 AVFrame *in = td->in;
319 AVFrame *out = td->out;
320 int x, y, p;
321
322 for (p = 0; p < s->nb_components; p++) {
323 const uint16_t *src_ptr = (const uint16_t *)in->data[p];
324 uint16_t *dst_ptr = (uint16_t *)out->data[p];
325 const int dst_linesize = out->linesize[p] / 2;
326 const int src_linesize = in->linesize[p] / 2;
327 const int thr = s->thr[p];
328 const int start = (s->planeheight[p] * jobnr ) / nb_jobs;
329 const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
330 const int w = s->planewidth[p] - 1;
331 const int h = s->planeheight[p] - 1;
332
333 for (y = start; y < end; y++) {
334 const int pos = y * s->planewidth[0];
335
336 for (x = 0; x < s->planewidth[p]; x++) {
337 const int x_pos = s->x_pos[pos + x];
338 const int y_pos = s->y_pos[pos + x];
339 const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
340 const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
341 const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
342 const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
343 const int src0 = src_ptr[y * src_linesize + x];
344
345 if (s->blur) {
346 const int avg = get_avg(ref0, ref1, ref2, ref3);
347 const int diff = FFABS(src0 - avg);
348
349 dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
350 } else {
351 dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
352 (FFABS(src0 - ref1) < thr) &&
353 (FFABS(src0 - ref2) < thr) &&
354 (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
355 }
356 }
357 }
358 }
359
360 return 0;
361}
362
363static int config_input(AVFilterLink *inlink)
364{
365 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
366 AVFilterContext *ctx = inlink->dst;
367 DebandContext *s = ctx->priv;
368 const float direction = s->direction;
369 const int range = s->range;
370 int x, y;
371
372 s->nb_components = desc->nb_components;
373
374 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
375 s->planeheight[0] = s->planeheight[3] = inlink->h;
376 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
377 s->planewidth[0] = s->planewidth[3] = inlink->w;
378 s->shift[0] = desc->log2_chroma_w;
379 s->shift[1] = desc->log2_chroma_h;
380
381 if (s->coupling)
382 s->deband = desc->comp[0].depth > 8 ? deband_16_coupling_c : deband_8_coupling_c;
383 else
384 s->deband = desc->comp[0].depth > 8 ? deband_16_c : deband_8_c;
385
386 s->thr[0] = ((1 << desc->comp[0].depth) - 1) * s->threshold[0];
387 s->thr[1] = ((1 << desc->comp[1].depth) - 1) * s->threshold[1];
388 s->thr[2] = ((1 << desc->comp[2].depth) - 1) * s->threshold[2];
389 s->thr[3] = ((1 << desc->comp[3].depth) - 1) * s->threshold[3];
390
391 s->x_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->x_pos));
392 s->y_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->y_pos));
393 if (!s->x_pos || !s->y_pos)
394 return AVERROR(ENOMEM);
395
396 for (y = 0; y < s->planeheight[0]; y++) {
397 for (x = 0; x < s->planewidth[0]; x++) {
398 const float r = frand(x, y);
399 const float dir = direction < 0 ? -direction : r * direction;
400 const int dist = range < 0 ? -range : r * range;
401
402 s->x_pos[y * s->planewidth[0] + x] = cosf(dir) * dist;
403 s->y_pos[y * s->planewidth[0] + x] = sinf(dir) * dist;
404 }
405 }
406
407 return 0;
408}
409
410static int filter_frame(AVFilterLink *inlink, AVFrame *in)
411{
412 AVFilterContext *ctx = inlink->dst;
413 AVFilterLink *outlink = ctx->outputs[0];
414 DebandContext *s = ctx->priv;
415 AVFrame *out;
416 ThreadData td;
417
418 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
419 if (!out) {
420 av_frame_free(&in);
421 return AVERROR(ENOMEM);
422 }
423 av_frame_copy_props(out, in);
424
425 td.in = in; td.out = out;
426 ctx->internal->execute(ctx, s->deband, &td, NULL, FFMIN3(s->planeheight[1],
427 s->planeheight[2],
428 ff_filter_get_nb_threads(ctx)));
429
430 av_frame_free(&in);
431 return ff_filter_frame(outlink, out);
432}
433
434static av_cold void uninit(AVFilterContext *ctx)
435{
436 DebandContext *s = ctx->priv;
437
438 av_freep(&s->x_pos);
439 av_freep(&s->y_pos);
440}
441
442static const AVFilterPad avfilter_vf_deband_inputs[] = {
443 {
444 .name = "default",
445 .type = AVMEDIA_TYPE_VIDEO,
446 .config_props = config_input,
447 .filter_frame = filter_frame,
448 },
449 { NULL }
450};
451
452static const AVFilterPad avfilter_vf_deband_outputs[] = {
453 {
454 .name = "default",
455 .type = AVMEDIA_TYPE_VIDEO,
456 },
457 { NULL }
458};
459
460AVFilter ff_vf_deband = {
461 .name = "deband",
462 .description = NULL_IF_CONFIG_SMALL("Debands video."),
463 .priv_size = sizeof(DebandContext),
464 .priv_class = &deband_class,
465 .uninit = uninit,
466 .query_formats = query_formats,
467 .inputs = avfilter_vf_deband_inputs,
468 .outputs = avfilter_vf_deband_outputs,
469 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
470};
471
generated by cgit at 2024-05-17 03:23:29 (GMT)