2 * Copyright (c) 2019 Paul B Mahol
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/avstring.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/qsort.h"
31 #include "framesync.h"
34 typedef struct XMedianContext {
36 const AVPixFmtDescriptor *desc;
55 int (*median_frames)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
58 static int query_formats(AVFilterContext *ctx)
60 static const enum AVPixelFormat pixel_fmts[] = {
67 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
68 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
69 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
70 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
71 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
73 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
74 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
76 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
78 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
79 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
80 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
81 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
82 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
83 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
84 AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
85 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
86 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
89 AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
91 return AVERROR(ENOMEM);
92 return ff_set_common_formats(ctx, formats);
95 static av_cold int init(AVFilterContext *ctx)
97 XMedianContext *s = ctx->priv;
100 s->tmedian = !strcmp(ctx->filter->name, "tmedian");
103 s->radius = s->nb_inputs / 2;
105 s->nb_inputs = s->radius * 2 + 1;
108 if (s->nb_inputs & 1)
109 s->index = s->radius * 2.f * s->percentile;
111 s->index = av_clip(s->radius * 2.f * s->percentile, 1, s->nb_inputs - 1);
112 s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
114 return AVERROR(ENOMEM);
116 for (int i = 0; i < s->nb_inputs && !s->tmedian; i++) {
117 AVFilterPad pad = { 0 };
119 pad.type = AVMEDIA_TYPE_VIDEO;
120 pad.name = av_asprintf("input%d", i);
122 return AVERROR(ENOMEM);
124 if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
133 typedef struct ThreadData {
137 static int comparei(const void *p1, const void *p2)
139 int left = *(const int *)p1;
140 int right = *(const int *)p2;
141 return FFDIFFSIGN(left, right);
144 static int median_frames16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
146 XMedianContext *s = ctx->priv;
147 ThreadData *td = arg;
148 AVFrame **in = td->in;
149 AVFrame *out = td->out;
150 const int nb_inputs = s->nb_inputs;
151 const int radius = s->radius;
152 const int index = s->index;
155 for (int p = 0; p < s->nb_planes; p++) {
156 const int slice_start = (s->height[p] * jobnr) / nb_jobs;
157 const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
158 uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]);
160 if (!((1 << p) & s->planes)) {
161 av_image_copy_plane((uint8_t *)dst, out->linesize[p],
162 in[radius]->data[p] + slice_start * in[radius]->linesize[p],
163 in[radius]->linesize[p],
164 s->linesize[p], slice_end - slice_start);
168 for (int y = slice_start; y < slice_end; y++) {
169 for (int x = 0; x < s->width[p]; x++) {
170 for (int i = 0; i < nb_inputs; i++) {
171 const uint16_t *src = (const uint16_t *)(in[i]->data[p] + y * in[i]->linesize[p]);
175 AV_QSORT(values, nb_inputs, int, comparei);
177 dst[x] = values[index];
179 dst[x] = (values[index] + values[index - 1]) >> 1;
182 dst += out->linesize[p] / 2;
189 static int median_frames8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
191 XMedianContext *s = ctx->priv;
192 ThreadData *td = arg;
193 AVFrame **in = td->in;
194 AVFrame *out = td->out;
195 const int nb_inputs = s->nb_inputs;
196 const int radius = s->radius;
197 const int index = s->index;
200 for (int p = 0; p < s->nb_planes; p++) {
201 const int slice_start = (s->height[p] * jobnr) / nb_jobs;
202 const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
203 uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
205 if (!((1 << p) & s->planes)) {
206 av_image_copy_plane(dst, out->linesize[p],
207 in[radius]->data[p] + slice_start * in[radius]->linesize[p],
208 in[radius]->linesize[p],
209 s->linesize[p], slice_end - slice_start);
213 for (int y = slice_start; y < slice_end; y++) {
214 for (int x = 0; x < s->width[p]; x++) {
215 for (int i = 0; i < nb_inputs; i++)
216 values[i] = in[i]->data[p][y * in[i]->linesize[p] + x];
218 AV_QSORT(values, nb_inputs, int, comparei);
220 dst[x] = values[index];
222 dst[x] = (values[index] + values[index - 1]) >> 1;
225 dst += out->linesize[p];
232 static int process_frame(FFFrameSync *fs)
234 AVFilterContext *ctx = fs->parent;
235 AVFilterLink *outlink = ctx->outputs[0];
236 XMedianContext *s = fs->opaque;
237 AVFrame **in = s->frames;
242 for (i = 0; i < s->nb_inputs; i++) {
243 if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
247 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
249 return AVERROR(ENOMEM);
250 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
254 ctx->internal->execute(ctx, s->median_frames, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
256 return ff_filter_frame(outlink, out);
259 static int config_output(AVFilterLink *outlink)
261 AVFilterContext *ctx = outlink->src;
262 XMedianContext *s = ctx->priv;
263 AVRational frame_rate = ctx->inputs[0]->frame_rate;
264 AVRational sar = ctx->inputs[0]->sample_aspect_ratio;
265 AVFilterLink *inlink = ctx->inputs[0];
266 int height = ctx->inputs[0]->h;
267 int width = ctx->inputs[0]->w;
271 for (int i = 1; i < s->nb_inputs && !s->tmedian; i++) {
272 if (ctx->inputs[i]->h != height || ctx->inputs[i]->w != width) {
273 av_log(ctx, AV_LOG_ERROR, "Input %d size (%dx%d) does not match input %d size (%dx%d).\n", i, ctx->inputs[i]->w, ctx->inputs[i]->h, 0, width, height);
274 return AVERROR(EINVAL);
278 s->desc = av_pix_fmt_desc_get(outlink->format);
281 s->nb_planes = av_pix_fmt_count_planes(outlink->format);
282 s->depth = s->desc->comp[0].depth;
283 s->max = (1 << s->depth) - 1;
286 s->median_frames = median_frames8;
288 s->median_frames = median_frames16;
290 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
293 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
294 s->width[0] = s->width[3] = inlink->w;
295 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
296 s->height[0] = s->height[3] = inlink->h;
303 outlink->frame_rate = frame_rate;
304 outlink->sample_aspect_ratio = sar;
306 if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
311 s->fs.on_event = process_frame;
313 for (i = 0; i < s->nb_inputs; i++) {
314 AVFilterLink *inlink = ctx->inputs[i];
316 in[i].time_base = inlink->time_base;
318 in[i].before = EXT_STOP;
319 in[i].after = EXT_STOP;
322 ret = ff_framesync_configure(&s->fs);
323 outlink->time_base = s->fs.time_base;
328 static av_cold void uninit(AVFilterContext *ctx)
330 XMedianContext *s = ctx->priv;
332 ff_framesync_uninit(&s->fs);
334 for (int i = 0; i < ctx->nb_inputs && !s->tmedian; i++)
335 av_freep(&ctx->input_pads[i].name);
336 for (int i = 0; i < s->nb_frames && s->frames && s->tmedian; i++)
337 av_frame_free(&s->frames[i]);
338 av_freep(&s->frames);
341 static int activate(AVFilterContext *ctx)
343 XMedianContext *s = ctx->priv;
344 return ff_framesync_activate(&s->fs);
347 #define OFFSET(x) offsetof(XMedianContext, x)
348 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
350 static const AVOption xmedian_options[] = {
351 { "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=3}, 3, 255, .flags = FLAGS },
352 { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
353 { "percentile", "set percentile", OFFSET(percentile),AV_OPT_TYPE_FLOAT,{.dbl=0.5}, 0, 1, .flags = FLAGS },
357 static const AVFilterPad outputs[] = {
360 .type = AVMEDIA_TYPE_VIDEO,
361 .config_props = config_output,
366 #if CONFIG_XMEDIAN_FILTER
367 AVFILTER_DEFINE_CLASS(xmedian);
369 AVFilter ff_vf_xmedian = {
371 .description = NULL_IF_CONFIG_SMALL("Pick median pixels from several video inputs."),
372 .priv_size = sizeof(XMedianContext),
373 .priv_class = &xmedian_class,
374 .query_formats = query_formats,
378 .activate = activate,
379 .flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS,
382 #endif /* CONFIG_XMEDIAN_FILTER */
384 #if CONFIG_TMEDIAN_FILTER
385 static int tmedian_filter_frame(AVFilterLink *inlink, AVFrame *in)
387 AVFilterContext *ctx = inlink->dst;
388 AVFilterLink *outlink = ctx->outputs[0];
389 XMedianContext *s = ctx->priv;
393 if (s->nb_frames < s->nb_inputs) {
394 s->frames[s->nb_frames] = in;
396 if (s->nb_frames < s->nb_inputs)
399 av_frame_free(&s->frames[0]);
400 memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
401 s->frames[s->nb_inputs - 1] = in;
404 if (ctx->is_disabled) {
405 out = av_frame_clone(s->frames[0]);
407 return AVERROR(ENOMEM);
408 return ff_filter_frame(outlink, out);
411 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
413 return AVERROR(ENOMEM);
414 out->pts = s->frames[0]->pts;
418 ctx->internal->execute(ctx, s->median_frames, &td, NULL, FFMIN(s->height[0], ff_filter_get_nb_threads(ctx)));
420 return ff_filter_frame(outlink, out);
423 static const AVOption tmedian_options[] = {
424 { "radius", "set median filter radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 127, .flags = FLAGS },
425 { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
426 { "percentile", "set percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, .flags = FLAGS },
430 static const AVFilterPad tmedian_inputs[] = {
433 .type = AVMEDIA_TYPE_VIDEO,
434 .filter_frame = tmedian_filter_frame,
439 static const AVFilterPad tmedian_outputs[] = {
442 .type = AVMEDIA_TYPE_VIDEO,
443 .config_props = config_output,
448 AVFILTER_DEFINE_CLASS(tmedian);
450 AVFilter ff_vf_tmedian = {
452 .description = NULL_IF_CONFIG_SMALL("Pick median pixels from successive frames."),
453 .priv_size = sizeof(XMedianContext),
454 .priv_class = &tmedian_class,
455 .query_formats = query_formats,
456 .inputs = tmedian_inputs,
457 .outputs = tmedian_outputs,
460 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
463 #endif /* CONFIG_TMEDIAN_FILTER */