1 /*
2 * Copyright (c) 2018 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 "filters.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30
31 typedef struct DedotContext {
32 const AVClass *class;
33 int m;
34 float lt;
35 float tl;
36 float tc;
37 float ct;
38
39 const AVPixFmtDescriptor *desc;
40 int depth;
41 int max;
42 int luma2d;
43 int lumaT;
44 int chromaT1;
45 int chromaT2;
46
47 int eof;
48 int eof_frames;
49 int nb_planes;
50 int planewidth[4];
51 int planeheight[4];
52
53 AVFrame *frames[5];
54
55 int (*dedotcrawl)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
56 int (*derainbow)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
57 } DedotContext;
58
59 static const enum AVPixelFormat pixel_fmts[] = {
60 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
61 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
62 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
63 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
64 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
65 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
66 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
67 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
68 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
69 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
70 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
71 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
72 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
73 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
74 AV_PIX_FMT_NONE
75 };
76
77 #define DEFINE_DEDOTCRAWL(name, type, div) \
78 static int dedotcrawl##name(AVFilterContext *ctx, void *arg, \
79 int jobnr, int nb_jobs) \
80 { \
81 DedotContext *s = ctx->priv; \
82 AVFrame *out = arg; \
83 int src_linesize = s->frames[2]->linesize[0] / div; \
84 int dst_linesize = out->linesize[0] / div; \
85 int p0_linesize = s->frames[0]->linesize[0] / div; \
86 int p1_linesize = s->frames[1]->linesize[0] / div; \
87 int p3_linesize = s->frames[3]->linesize[0] / div; \
88 int p4_linesize = s->frames[4]->linesize[0] / div; \
89 const int h = s->planeheight[0]; \
90 int slice_start = (h * jobnr) / nb_jobs; \
91 int slice_end = (h * (jobnr+1)) / nb_jobs; \
92 type *p0 = (type *)s->frames[0]->data[0]; \
93 type *p1 = (type *)s->frames[1]->data[0]; \
94 type *p3 = (type *)s->frames[3]->data[0]; \
95 type *p4 = (type *)s->frames[4]->data[0]; \
96 type *src = (type *)s->frames[2]->data[0]; \
97 type *dst = (type *)out->data[0]; \
98 const int luma2d = s->luma2d; \
99 const int lumaT = s->lumaT; \
100 \
101 if (!slice_start) { \
102 slice_start++; \
103 } \
104 p0 += p0_linesize * slice_start; \
105 p1 += p1_linesize * slice_start; \
106 p3 += p3_linesize * slice_start; \
107 p4 += p4_linesize * slice_start; \
108 src += src_linesize * slice_start; \
109 dst += dst_linesize * slice_start; \
110 if (slice_end == h) { \
111 slice_end--; \
112 } \
113 for (int y = slice_start; y < slice_end; y++) { \
114 for (int x = 1; x < s->planewidth[0] - 1; x++) { \
115 int above = src[x - src_linesize]; \
116 int bellow = src[x + src_linesize]; \
117 int cur = src[x]; \
118 int left = src[x - 1]; \
119 int right = src[x + 1]; \
120 \
121 if (FFABS(above + bellow - 2 * cur) <= luma2d && \
122 FFABS(left + right - 2 * cur) <= luma2d) \
123 continue; \
124 \
125 if (FFABS(cur - p0[x]) <= lumaT && \
126 FFABS(cur - p4[x]) <= lumaT && \
127 FFABS(p1[x] - p3[x]) <= lumaT) { \
128 int diff1 = FFABS(cur - p1[x]); \
129 int diff2 = FFABS(cur - p3[x]); \
130 \
131 if (diff1 < diff2) \
132 dst[x] = (src[x] + p1[x] + 1) >> 1; \
133 else \
134 dst[x] = (src[x] + p3[x] + 1) >> 1; \
135 } \
136 } \
137 \
138 dst += dst_linesize; \
139 src += src_linesize; \
140 p0 += p0_linesize; \
141 p1 += p1_linesize; \
142 p3 += p3_linesize; \
143 p4 += p4_linesize; \
144 } \
145 return 0; \
146 }
147
148 DEFINE_DEDOTCRAWL(8, uint8_t, 1)
149 DEFINE_DEDOTCRAWL(16, uint16_t, 2)
150
151 typedef struct ThreadData {
152 AVFrame *out;
153 int plane;
154 } ThreadData;
155
156 #define DEFINE_DERAINBOW(name, type, div) \
157 static int derainbow##name(AVFilterContext *ctx, void *arg, \
158 int jobnr, int nb_jobs) \
159 { \
160 DedotContext *s = ctx->priv; \
161 ThreadData *td = arg; \
162 AVFrame *out = td->out; \
163 const int plane = td->plane; \
164 const int h = s->planeheight[plane]; \
165 int slice_start = (h * jobnr) / nb_jobs; \
166 int slice_end = (h * (jobnr+1)) / nb_jobs; \
167 int src_linesize = s->frames[2]->linesize[plane] / div; \
168 int dst_linesize = out->linesize[plane] / div; \
169 int p0_linesize = s->frames[0]->linesize[plane] / div; \
170 int p1_linesize = s->frames[1]->linesize[plane] / div; \
171 int p3_linesize = s->frames[3]->linesize[plane] / div; \
172 int p4_linesize = s->frames[4]->linesize[plane] / div; \
173 type *p0 = (type *)s->frames[0]->data[plane]; \
174 type *p1 = (type *)s->frames[1]->data[plane]; \
175 type *p3 = (type *)s->frames[3]->data[plane]; \
176 type *p4 = (type *)s->frames[4]->data[plane]; \
177 type *src = (type *)s->frames[2]->data[plane]; \
178 type *dst = (type *)out->data[plane]; \
179 const int chromaT1 = s->chromaT1; \
180 const int chromaT2 = s->chromaT2; \
181 \
182 p0 += slice_start * p0_linesize; \
183 p1 += slice_start * p1_linesize; \
184 p3 += slice_start * p3_linesize; \
185 p4 += slice_start * p4_linesize; \
186 src += slice_start * src_linesize; \
187 dst += slice_start * dst_linesize; \
188 for (int y = slice_start; y < slice_end; y++) { \
189 for (int x = 0; x < s->planewidth[plane]; x++) { \
190 int cur = src[x]; \
191 \
192 if (FFABS(cur - p0[x]) <= chromaT1 && \
193 FFABS(cur - p4[x]) <= chromaT1 && \
194 FFABS(p1[x] - p3[x]) <= chromaT1 && \
195 FFABS(cur - p1[x]) > chromaT2 && \
196 FFABS(cur - p3[x]) > chromaT2) { \
197 int diff1 = FFABS(cur - p1[x]); \
198 int diff2 = FFABS(cur - p3[x]); \
199 \
200 if (diff1 < diff2) \
201 dst[x] = (src[x] + p1[x] + 1) >> 1; \
202 else \
203 dst[x] = (src[x] + p3[x] + 1) >> 1; \
204 } \
205 } \
206 \
207 dst += dst_linesize; \
208 src += src_linesize; \
209 p0 += p0_linesize; \
210 p1 += p1_linesize; \
211 p3 += p3_linesize; \
212 p4 += p4_linesize; \
213 } \
214 return 0; \
215 }
216
217 DEFINE_DERAINBOW(8, uint8_t, 1)
218 DEFINE_DERAINBOW(16, uint16_t, 2)
219
config_output(AVFilterLink * outlink)220 static int config_output(AVFilterLink *outlink)
221 {
222 AVFilterContext *ctx = outlink->src;
223 DedotContext *s = ctx->priv;
224 AVFilterLink *inlink = ctx->inputs[0];
225
226 s->desc = av_pix_fmt_desc_get(outlink->format);
227 if (!s->desc)
228 return AVERROR_BUG;
229 s->nb_planes = av_pix_fmt_count_planes(outlink->format);
230 s->depth = s->desc->comp[0].depth;
231 s->max = (1 << s->depth) - 1;
232 s->luma2d = s->lt * s->max;
233 s->lumaT = s->tl * s->max;
234 s->chromaT1 = s->tc * s->max;
235 s->chromaT2 = s->ct * s->max;
236
237 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
238 s->planewidth[0] = s->planewidth[3] = inlink->w;
239
240 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
241 s->planeheight[0] = s->planeheight[3] = inlink->h;
242
243 if (s->depth <= 8) {
244 s->dedotcrawl = dedotcrawl8;
245 s->derainbow = derainbow8;
246 } else {
247 s->dedotcrawl = dedotcrawl16;
248 s->derainbow = derainbow16;
249 }
250
251 return 0;
252 }
253
activate(AVFilterContext * ctx)254 static int activate(AVFilterContext *ctx)
255 {
256 AVFilterLink *inlink = ctx->inputs[0];
257 AVFilterLink *outlink = ctx->outputs[0];
258 DedotContext *s = ctx->priv;
259 AVFrame *frame = NULL;
260 int64_t pts;
261 int status;
262 int ret = 0;
263
264 FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
265
266 if (s->eof == 0) {
267 ret = ff_inlink_consume_frame(inlink, &frame);
268 if (ret < 0)
269 return ret;
270 }
271 if (frame || s->eof_frames > 0) {
272 AVFrame *out = NULL;
273
274 if (frame) {
275 for (int i = 2; i < 5; i++) {
276 if (!s->frames[i])
277 s->frames[i] = av_frame_clone(frame);
278 }
279 av_frame_free(&frame);
280 } else if (s->frames[3]) {
281 s->eof_frames--;
282 s->frames[4] = av_frame_clone(s->frames[3]);
283 }
284
285 if (s->frames[0] &&
286 s->frames[1] &&
287 s->frames[2] &&
288 s->frames[3] &&
289 s->frames[4]) {
290 out = av_frame_clone(s->frames[2]);
291 if (out && !ctx->is_disabled) {
292 ret = av_frame_make_writable(out);
293 if (ret >= 0) {
294 if (s->m & 1)
295 ff_filter_execute(ctx, s->dedotcrawl, out, NULL,
296 FFMIN(ff_filter_get_nb_threads(ctx),
297 s->planeheight[0]));
298 if (s->m & 2) {
299 ThreadData td;
300 td.out = out; td.plane = 1;
301 ff_filter_execute(ctx, s->derainbow, &td, NULL,
302 FFMIN(ff_filter_get_nb_threads(ctx),
303 s->planeheight[1]));
304 td.plane = 2;
305 ff_filter_execute(ctx, s->derainbow, &td, NULL,
306 FFMIN(ff_filter_get_nb_threads(ctx),
307 s->planeheight[2]));
308 }
309 } else
310 av_frame_free(&out);
311 } else if (!out) {
312 ret = AVERROR(ENOMEM);
313 }
314 }
315
316 av_frame_free(&s->frames[0]);
317 s->frames[0] = s->frames[1];
318 s->frames[1] = s->frames[2];
319 s->frames[2] = s->frames[3];
320 s->frames[3] = s->frames[4];
321 s->frames[4] = NULL;
322
323 if (ret < 0)
324 return ret;
325 if (out)
326 return ff_filter_frame(outlink, out);
327 }
328
329 if (s->eof) {
330 if (s->eof_frames <= 0) {
331 ff_outlink_set_status(outlink, AVERROR_EOF, s->frames[2]->pts);
332 } else {
333 ff_filter_set_ready(ctx, 10);
334 }
335 return 0;
336 }
337
338 if (!s->eof && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
339 if (status == AVERROR_EOF) {
340 s->eof = 1;
341 s->eof_frames = !!s->frames[0] + !!s->frames[1];
342 if (s->eof_frames <= 0) {
343 ff_outlink_set_status(outlink, AVERROR_EOF, pts);
344 return 0;
345 }
346 ff_filter_set_ready(ctx, 10);
347 return 0;
348 }
349 }
350
351 FF_FILTER_FORWARD_WANTED(outlink, inlink);
352
353 return FFERROR_NOT_READY;
354 }
355
uninit(AVFilterContext * ctx)356 static av_cold void uninit(AVFilterContext *ctx)
357 {
358 DedotContext *s = ctx->priv;
359
360 for (int i = 0; i < 5; i++)
361 av_frame_free(&s->frames[i]);
362 }
363
364 #define OFFSET(x) offsetof(DedotContext, x)
365 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
366
367 static const AVOption dedot_options[] = {
368 { "m", "set filtering mode", OFFSET( m), AV_OPT_TYPE_FLAGS, {.i64=3}, 0, 3, FLAGS, "m" },
369 { "dotcrawl", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "m" },
370 { "rainbows", 0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "m" },
371 { "lt", "set spatial luma threshold", OFFSET(lt), AV_OPT_TYPE_FLOAT, {.dbl=.079}, 0, 1, FLAGS },
372 { "tl", "set tolerance for temporal luma", OFFSET(tl), AV_OPT_TYPE_FLOAT, {.dbl=.079}, 0, 1, FLAGS },
373 { "tc", "set tolerance for chroma temporal variation", OFFSET(tc), AV_OPT_TYPE_FLOAT, {.dbl=.058}, 0, 1, FLAGS },
374 { "ct", "set temporal chroma threshold", OFFSET(ct), AV_OPT_TYPE_FLOAT, {.dbl=.019}, 0, 1, FLAGS },
375 { NULL },
376 };
377
378 static const AVFilterPad inputs[] = {
379 {
380 .name = "default",
381 .type = AVMEDIA_TYPE_VIDEO,
382 },
383 };
384
385 static const AVFilterPad outputs[] = {
386 {
387 .name = "default",
388 .type = AVMEDIA_TYPE_VIDEO,
389 .config_props = config_output,
390 },
391 };
392
393 AVFILTER_DEFINE_CLASS(dedot);
394
395 const AVFilter ff_vf_dedot = {
396 .name = "dedot",
397 .description = NULL_IF_CONFIG_SMALL("Reduce cross-luminance and cross-color."),
398 .priv_size = sizeof(DedotContext),
399 .priv_class = &dedot_class,
400 .activate = activate,
401 .uninit = uninit,
402 FILTER_INPUTS(inputs),
403 FILTER_OUTPUTS(outputs),
404 FILTER_PIXFMTS_ARRAY(pixel_fmts),
405 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
406 };
407