FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2016 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/intreadwrite.h"
22			#include "libavutil/mem.h"
23			#include "libavutil/opt.h"
24			#include "libavutil/pixdesc.h"
25			#include "libavutil/xga_font_data.h"
26			#include "avfilter.h"
27			#include "drawutils.h"
28			#include "formats.h"
29			#include "internal.h"
30			#include "video.h"
31
32			typedef struct DatascopeContext {
33			const AVClass *class;
34			int ow, oh;
35			int x, y;
36			int mode;
37			int dformat;
38			int axis;
39			int components;
40			float opacity;
41
42			int nb_planes;
43			int nb_comps;
44			int chars;
45			FFDrawContext draw;
46			FFDrawColor yellow;
47			FFDrawColor white;
48			FFDrawColor black;
49			FFDrawColor gray;
50
51			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
52			void (*reverse_color)(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse);
53			int (*filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
54			} DatascopeContext;
55
56			#define OFFSET(x) offsetof(DatascopeContext, x)
57			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
58			#define FLAGSR AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
59
60			static const AVOption datascope_options[] = {
61			{ "size", "set output size", OFFSET(ow), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
62			{ "s", "set output size", OFFSET(ow), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
63			{ "x", "set x offset", OFFSET(x), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGSR },
64			{ "y", "set y offset", OFFSET(y), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGSR },
65			{ "mode", "set scope mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGSR, .unit = "mode" },
66			{ "mono", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGSR, .unit = "mode" },
67			{ "color", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGSR, .unit = "mode" },
68			{ "color2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGSR, .unit = "mode" },
69			{ "axis", "draw column/row numbers", OFFSET(axis), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGSR },
70			{ "opacity", "set background opacity", OFFSET(opacity), AV_OPT_TYPE_FLOAT, {.dbl=0.75}, 0, 1, FLAGSR },
71			{ "format", "set display number format", OFFSET(dformat), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGSR, .unit = "format" },
72			{ "hex", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGSR, .unit = "format" },
73			{ "dec", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGSR, .unit = "format" },
74			{ "components", "set components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=15}, 1, 15, FLAGSR },
75			{ NULL }
76			};
77
78			AVFILTER_DEFINE_CLASS(datascope);
79
80		✗	static int query_formats(AVFilterContext *ctx)
81			{
82		✗	return ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
83			}
84
85		✗	static void draw_text(FFDrawContext *draw, AVFrame *frame, FFDrawColor *color,
86			int x0, int y0, const uint8_t *text, int vertical)
87			{
88		✗	int x = x0;
89
90		✗	for (; *text; text++) {
91		✗	if (*text == '\n') {
92		✗	x = x0;
93		✗	y0 += 8;
94		✗	continue;
95			}
96		✗	ff_blend_mask(draw, color, frame->data, frame->linesize,
97			frame->width, frame->height,
98		✗	avpriv_cga_font + *text * 8, 1, 8, 8, 0, 0, x, y0);
99		✗	if (vertical) {
100		✗	x = x0;
101		✗	y0 += 8;
102			} else {
103		✗	x += 8;
104			}
105			}
106		✗	}
107
108		✗	static void pick_color8(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
109			{
110			int p, i;
111
112		✗	color->rgba[3] = 255;
113		✗	for (p = 0; p < draw->nb_planes; p++) {
114		✗	if (draw->nb_planes == 1) {
115		✗	for (i = 0; i < 4; i++) {
116		✗	value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
117		✗	color->comp[0].u8[i] = value[i];
118			}
119			} else {
120		✗	value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
121		✗	color->comp[p].u8[0] = value[p];
122			}
123			}
124		✗	}
125
126		✗	static void pick_color16(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
127			{
128			int p, i;
129
130		✗	color->rgba[3] = 255;
131		✗	for (p = 0; p < draw->nb_planes; p++) {
132		✗	if (draw->nb_planes == 1) {
133		✗	for (i = 0; i < 4; i++) {
134		✗	value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
135		✗	color->comp[0].u16[i] = value[i];
136			}
137			} else {
138		✗	value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
139		✗	color->comp[p].u16[0] = value[p];
140			}
141			}
142		✗	}
143
144		✗	static void reverse_color8(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
145			{
146			int p;
147
148		✗	reverse->rgba[3] = 255;
149		✗	for (p = 0; p < draw->nb_planes; p++) {
150		✗	reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
151		✗	reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
152		✗	reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
153			}
154		✗	}
155
156		✗	static void reverse_color16(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
157			{
158			int p;
159
160		✗	reverse->rgba[3] = 255;
161		✗	for (p = 0; p < draw->nb_planes; p++) {
162		✗	const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
163		✗	const unsigned mid = (max + 1) / 2;
164
165		✗	reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
166		✗	reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
167		✗	reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
168			}
169		✗	}
170
171			typedef struct ThreadData {
172			AVFrame *in, *out;
173			int xoff, yoff, PP;
174			} ThreadData;
175
176		✗	static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
177			{
178		✗	DatascopeContext *s = ctx->priv;
179		✗	AVFilterLink *outlink = ctx->outputs[0];
180		✗	AVFilterLink *inlink = ctx->inputs[0];
181		✗	ThreadData *td = arg;
182		✗	AVFrame *in = td->in;
183		✗	AVFrame *out = td->out;
184		✗	const int PP = td->PP;
185		✗	const int xoff = td->xoff;
186		✗	const int yoff = td->yoff;
187		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
188		✗	const int C = s->chars;
189		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
190		✗	const int W = (outlink->w - xoff) / (C * 10);
191		✗	const int H = (outlink->h - yoff) / (PP * 12);
192		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
193		✗	const int slice_start = (W * jobnr) / nb_jobs;
194		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
195			int x, y, p;
196
197		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
198		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
199		✗	FFDrawColor color = { { 0 } };
200		✗	FFDrawColor reverse = { { 0 } };
201		✗	int value[4] = { 0 }, pp = 0;
202
203		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
204		✗	s->reverse_color(&s->draw, &color, &reverse);
205		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
206		✗	xoff + x * C * 10, yoff + y * PP * 12, C * 10, PP * 12);
207
208		✗	for (p = 0; p < P; p++) {
209			char text[256];
210
211		✗	if (!(s->components & (1 << p)))
212		✗	continue;
213		✗	snprintf(text, sizeof(text), format[D], value[p]);
214		✗	draw_text(&s->draw, out, &reverse, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
215		✗	pp++;
216			}
217			}
218			}
219
220		✗	return 0;
221			}
222
223		✗	static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
224			{
225		✗	DatascopeContext *s = ctx->priv;
226		✗	AVFilterLink *outlink = ctx->outputs[0];
227		✗	AVFilterLink *inlink = ctx->inputs[0];
228		✗	ThreadData *td = arg;
229		✗	AVFrame *in = td->in;
230		✗	AVFrame *out = td->out;
231		✗	const int PP = td->PP;
232		✗	const int xoff = td->xoff;
233		✗	const int yoff = td->yoff;
234		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
235		✗	const int C = s->chars;
236		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
237		✗	const int W = (outlink->w - xoff) / (C * 10);
238		✗	const int H = (outlink->h - yoff) / (PP * 12);
239		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
240		✗	const int slice_start = (W * jobnr) / nb_jobs;
241		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
242			int x, y, p;
243
244		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
245		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
246		✗	FFDrawColor color = { { 0 } };
247		✗	int value[4] = { 0 }, pp = 0;
248
249		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
250
251		✗	for (p = 0; p < P; p++) {
252			char text[256];
253
254		✗	if (!(s->components & (1 << p)))
255		✗	continue;
256		✗	snprintf(text, sizeof(text), format[D], value[p]);
257		✗	draw_text(&s->draw, out, &color, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
258		✗	pp++;
259			}
260			}
261			}
262
263		✗	return 0;
264			}
265
266		✗	static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
267			{
268		✗	DatascopeContext *s = ctx->priv;
269		✗	AVFilterLink *outlink = ctx->outputs[0];
270		✗	AVFilterLink *inlink = ctx->inputs[0];
271		✗	ThreadData *td = arg;
272		✗	AVFrame *in = td->in;
273		✗	AVFrame *out = td->out;
274		✗	const int PP = td->PP;
275		✗	const int xoff = td->xoff;
276		✗	const int yoff = td->yoff;
277		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
278		✗	const int C = s->chars;
279		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
280		✗	const int W = (outlink->w - xoff) / (C * 10);
281		✗	const int H = (outlink->h - yoff) / (PP * 12);
282		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
283		✗	const int slice_start = (W * jobnr) / nb_jobs;
284		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
285			int x, y, p;
286
287		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
288		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
289		✗	FFDrawColor color = { { 0 } };
290		✗	int value[4] = { 0 }, pp = 0;
291
292		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
293		✗	for (p = 0; p < P; p++) {
294			char text[256];
295
296		✗	if (!(s->components & (1 << p)))
297		✗	continue;
298		✗	snprintf(text, sizeof(text), format[D], value[p]);
299		✗	draw_text(&s->draw, out, &s->white, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
300		✗	pp++;
301			}
302			}
303			}
304
305		✗	return 0;
306			}
307
308		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *in)
309			{
310		✗	AVFilterContext *ctx = inlink->dst;
311		✗	DatascopeContext *s = ctx->priv;
312		✗	AVFilterLink *outlink = ctx->outputs[0];
313		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
314		✗	ThreadData td = { 0 };
315		✗	int ymaxlen = 0;
316		✗	int xmaxlen = 0;
317		✗	int PP = 0;
318			AVFrame *out;
319
320		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
321		✗	if (!out) {
322		✗	av_frame_free(&in);
323		✗	return AVERROR(ENOMEM);
324			}
325		✗	av_frame_copy_props(out, in);
326
327		✗	ff_fill_rectangle(&s->draw, &s->black, out->data, out->linesize,
328			0, 0, outlink->w, outlink->h);
329
330		✗	for (int p = 0; p < P; p++) {
331		✗	if (s->components & (1 << p))
332		✗	PP++;
333			}
334		✗	PP = FFMAX(PP, 1);
335
336		✗	if (s->axis) {
337		✗	const int C = s->chars;
338		✗	int Y = outlink->h / (PP * 12);
339		✗	int X = outlink->w / (C * 10);
340		✗	char text[256] = { 0 };
341			int x, y;
342
343		✗	snprintf(text, sizeof(text), "%d", s->y + Y);
344		✗	ymaxlen = strlen(text);
345		✗	ymaxlen *= 10;
346		✗	snprintf(text, sizeof(text), "%d", s->x + X);
347		✗	xmaxlen = strlen(text);
348		✗	xmaxlen *= 10;
349
350		✗	Y = (outlink->h - xmaxlen) / (PP * 12);
351		✗	X = (outlink->w - ymaxlen) / (C * 10);
352
353		✗	for (y = 0; y < Y; y++) {
354		✗	snprintf(text, sizeof(text), "%d", s->y + y);
355
356		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
357		✗	0, xmaxlen + y * PP * 12 + (PP + 1) * PP - 2, ymaxlen, 10);
358
359		✗	draw_text(&s->draw, out, &s->yellow, 2, xmaxlen + y * PP * 12 + (PP + 1) * PP, text, 0);
360			}
361
362		✗	for (x = 0; x < X; x++) {
363		✗	snprintf(text, sizeof(text), "%d", s->x + x);
364
365		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
366		✗	ymaxlen + x * C * 10 + 2 * C - 2, 0, 10, xmaxlen);
367
368		✗	draw_text(&s->draw, out, &s->yellow, ymaxlen + x * C * 10 + 2 * C, 2, text, 1);
369			}
370			}
371
372		✗	td.in = in; td.out = out, td.yoff = xmaxlen, td.xoff = ymaxlen, td.PP = PP;
373		✗	ff_filter_execute(ctx, s->filter, &td, NULL,
374		✗	FFMIN(ff_filter_get_nb_threads(ctx), FFMAX(outlink->w / 20, 1)));
375
376		✗	av_frame_free(&in);
377		✗	return ff_filter_frame(outlink, out);
378			}
379
380		✗	static int config_input(AVFilterLink *inlink)
381			{
382		✗	DatascopeContext *s = inlink->dst->priv;
383		✗	uint8_t alpha = s->opacity * 255;
384
385		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
386		✗	ff_draw_init2(&s->draw, inlink->format, inlink->colorspace, inlink->color_range, 0);
387		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
388		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, alpha} );
389		✗	ff_draw_color(&s->draw, &s->yellow, (uint8_t[]){ 255, 255, 0, 255} );
390		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 77, 77, 77, 255} );
391		✗	s->chars = (s->draw.desc->comp[0].depth + 7) / 8 * 2 + s->dformat;
392		✗	s->nb_comps = s->draw.desc->nb_components;
393
394		✗	switch (s->mode) {
395		✗	case 0: s->filter = filter_mono; break;
396		✗	case 1: s->filter = filter_color; break;
397		✗	case 2: s->filter = filter_color2; break;
398			}
399
400		✗	if (s->draw.desc->comp[0].depth <= 8) {
401		✗	s->pick_color = pick_color8;
402		✗	s->reverse_color = reverse_color8;
403			} else {
404		✗	s->pick_color = pick_color16;
405		✗	s->reverse_color = reverse_color16;
406			}
407
408		✗	return 0;
409			}
410
411		✗	static int config_output(AVFilterLink *outlink)
412			{
413		✗	DatascopeContext *s = outlink->src->priv;
414
415		✗	outlink->h = s->oh;
416		✗	outlink->w = s->ow;
417		✗	outlink->sample_aspect_ratio = (AVRational){1,1};
418
419		✗	return 0;
420			}
421
422		✗	static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
423			char *res, int res_len, int flags)
424			{
425			int ret;
426
427		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
428		✗	if (ret < 0)
429		✗	return ret;
430
431		✗	return config_input(ctx->inputs[0]);
432			}
433
434			static const AVFilterPad inputs[] = {
435			{
436			.name = "default",
437			.type = AVMEDIA_TYPE_VIDEO,
438			.filter_frame = filter_frame,
439			.config_props = config_input,
440			},
441			};
442
443			static const AVFilterPad outputs[] = {
444			{
445			.name = "default",
446			.type = AVMEDIA_TYPE_VIDEO,
447			.config_props = config_output,
448			},
449			};
450
451			const AVFilter ff_vf_datascope = {
452			.name = "datascope",
453			.description = NULL_IF_CONFIG_SMALL("Video data analysis."),
454			.priv_size = sizeof(DatascopeContext),
455			.priv_class = &datascope_class,
456			FILTER_INPUTS(inputs),
457			FILTER_OUTPUTS(outputs),
458			FILTER_QUERY_FUNC(query_formats),
459			.flags = AVFILTER_FLAG_SLICE_THREADS,
460			.process_command = process_command,
461			};
462
463			typedef struct PixscopeContext {
464			const AVClass *class;
465
466			float xpos, ypos;
467			float wx, wy;
468			int w, h;
469			float o;
470
471			int x, y;
472			int ww, wh;
473
474			int nb_planes;
475			int nb_comps;
476			int is_rgb;
477			uint8_t rgba_map[4];
478			FFDrawContext draw;
479			FFDrawColor dark;
480			FFDrawColor black;
481			FFDrawColor white;
482			FFDrawColor green;
483			FFDrawColor blue;
484			FFDrawColor red;
485			FFDrawColor *colors[4];
486
487			uint16_t values[4][80][80];
488
489			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
490			} PixscopeContext;
491
492			#define POFFSET(x) offsetof(PixscopeContext, x)
493
494			static const AVOption pixscope_options[] = {
495			{ "x", "set scope x offset", POFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
496			{ "y", "set scope y offset", POFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
497			{ "w", "set scope width", POFFSET(w), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
498			{ "h", "set scope height", POFFSET(h), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
499			{ "o", "set window opacity", POFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
500			{ "wx", "set window x offset", POFFSET(wx), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
501			{ "wy", "set window y offset", POFFSET(wy), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
502			{ NULL }
503			};
504
505			AVFILTER_DEFINE_CLASS(pixscope);
506
507		✗	static int pixscope_config_input(AVFilterLink *inlink)
508			{
509		✗	PixscopeContext *s = inlink->dst->priv;
510
511		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
512		✗	ff_draw_init(&s->draw, inlink->format, 0);
513		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
514		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
515		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
516		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
517		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
518		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
519		✗	s->nb_comps = s->draw.desc->nb_components;
520		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
521
522		✗	if (s->is_rgb) {
523		✗	s->colors[0] = &s->red;
524		✗	s->colors[1] = &s->green;
525		✗	s->colors[2] = &s->blue;
526		✗	s->colors[3] = &s->white;
527		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
528			} else {
529		✗	s->colors[0] = &s->white;
530		✗	s->colors[1] = &s->blue;
531		✗	s->colors[2] = &s->red;
532		✗	s->colors[3] = &s->white;
533		✗	s->rgba_map[0] = 0;
534		✗	s->rgba_map[1] = 1;
535		✗	s->rgba_map[2] = 2;
536		✗	s->rgba_map[3] = 3;
537			}
538
539		✗	if (s->draw.desc->comp[0].depth <= 8) {
540		✗	s->pick_color = pick_color8;
541			} else {
542		✗	s->pick_color = pick_color16;
543			}
544
545		✗	if (inlink->w < 640 || inlink->h < 480) {
546		✗	av_log(inlink->dst, AV_LOG_ERROR, "min supported resolution is 640x480\n");
547		✗	return AVERROR(EINVAL);
548			}
549
550		✗	s->ww = 300;
551		✗	s->wh = 300 * 1.6;
552		✗	s->x = s->xpos * (inlink->w - 1);
553		✗	s->y = s->ypos * (inlink->h - 1);
554		✗	if (s->x + s->w >= inlink->w || s->y + s->h >= inlink->h) {
555		✗	av_log(inlink->dst, AV_LOG_WARNING, "scope position is out of range, clipping\n");
556		✗	s->x = FFMIN(s->x, inlink->w - s->w);
557		✗	s->y = FFMIN(s->y, inlink->h - s->h);
558			}
559
560		✗	return 0;
561			}
562
563			#define SQR(x) ((x)*(x))
564
565		✗	static int pixscope_filter_frame(AVFilterLink *inlink, AVFrame *in)
566			{
567		✗	AVFilterContext *ctx = inlink->dst;
568		✗	PixscopeContext *s = ctx->priv;
569		✗	AVFilterLink *outlink = ctx->outputs[0];
570		✗	AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
571		✗	int max[4] = { 0 }, min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
572		✗	float average[4] = { 0 };
573		✗	double std[4] = { 0 }, rms[4] = { 0 };
574		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
575		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
576			int x, y, X, Y, i, w, h;
577			char text[128];
578
579		✗	if (!out) {
580		✗	av_frame_free(&in);
581		✗	return AVERROR(ENOMEM);
582			}
583		✗	av_frame_copy_props(out, in);
584		✗	av_frame_copy(out, in);
585
586		✗	w = s->ww / s->w;
587		✗	h = s->ww / s->h;
588
589		✗	if (s->wx >= 0) {
590		✗	X = (in->width - s->ww) * s->wx;
591			} else {
592		✗	X = (in->width - s->ww) * -s->wx;
593			}
594		✗	if (s->wy >= 0) {
595		✗	Y = (in->height - s->wh) * s->wy;
596			} else {
597		✗	Y = (in->height - s->wh) * -s->wy;
598			}
599
600		✗	if (s->wx < 0) {
601		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
602		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
603		✗	X = (in->width - s->ww) * (1 + s->wx);
604			}
605			}
606
607		✗	if (s->wy < 0) {
608		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
609		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
610		✗	Y = (in->height - s->wh) * (1 + s->wy);
611			}
612			}
613
614		✗	ff_blend_rectangle(&s->draw, &s->dark, out->data, out->linesize,
615			out->width, out->height,
616			X,
617			Y,
618			s->ww,
619			s->wh);
620
621		✗	for (y = 0; y < s->h; y++) {
622		✗	for (x = 0; x < s->w; x++) {
623		✗	FFDrawColor color = { { 0 } };
624		✗	int value[4] = { 0 };
625
626		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
627		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
628		✗	x * w + (s->ww - 4 - (s->w * w)) / 2 + X, y * h + 2 + Y, w, h);
629		✗	for (i = 0; i < 4; i++) {
630		✗	s->values[i][x][y] = value[i];
631		✗	rms[i] += (double)value[i] * (double)value[i];
632		✗	average[i] += value[i];
633		✗	min[i] = FFMIN(min[i], value[i]);
634		✗	max[i] = FFMAX(max[i], value[i]);
635			}
636			}
637			}
638
639		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
640			out->width, out->height,
641		✗	s->x - 2, s->y - 2, s->w + 4, 1);
642
643		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
644			out->width, out->height,
645		✗	s->x - 1, s->y - 1, s->w + 2, 1);
646
647		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
648			out->width, out->height,
649		✗	s->x - 1, s->y - 1, 1, s->h + 2);
650
651		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
652			out->width, out->height,
653		✗	s->x - 2, s->y - 2, 1, s->h + 4);
654
655		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
656			out->width, out->height,
657		✗	s->x - 1, s->y + 1 + s->h, s->w + 3, 1);
658
659		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
660			out->width, out->height,
661		✗	s->x - 2, s->y + 2 + s->h, s->w + 4, 1);
662
663		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
664			out->width, out->height,
665		✗	s->x + 1 + s->w, s->y - 1, 1, s->h + 2);
666
667		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
668			out->width, out->height,
669		✗	s->x + 2 + s->w, s->y - 2, 1, s->h + 5);
670
671		✗	for (i = 0; i < 4; i++) {
672		✗	rms[i] /= s->w * s->h;
673		✗	rms[i] = sqrt(rms[i]);
674		✗	average[i] /= s->w * s->h;
675			}
676
677		✗	for (y = 0; y < s->h; y++) {
678		✗	for (x = 0; x < s->w; x++) {
679		✗	for (i = 0; i < 4; i++)
680		✗	std[i] += SQR(s->values[i][x][y] - average[i]);
681			}
682			}
683
684		✗	for (i = 0; i < 4; i++) {
685		✗	std[i] /= s->w * s->h;
686		✗	std[i] = sqrt(std[i]);
687			}
688
689		✗	snprintf(text, sizeof(text), "CH AVG MIN MAX RMS\n");
690		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 5, text, 0);
691		✗	for (i = 0; i < s->nb_comps; i++) {
692		✗	int c = s->rgba_map[i];
693
694		✗	snprintf(text, sizeof(text), "%c %07.1f %05d %05d %07.1f\n", s->is_rgb ? rgba[i] : yuva[i], average[c], min[c], max[c], rms[c]);
695		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 1), text, 0);
696			}
697		✗	snprintf(text, sizeof(text), "CH STD\n");
698		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 15 * (0 + 5), text, 0);
699		✗	for (i = 0; i < s->nb_comps; i++) {
700		✗	int c = s->rgba_map[i];
701
702		✗	snprintf(text, sizeof(text), "%c %07.2f\n", s->is_rgb ? rgba[i] : yuva[i], std[c]);
703		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 6), text, 0);
704			}
705
706		✗	av_frame_free(&in);
707		✗	return ff_filter_frame(outlink, out);
708			}
709
710		✗	static int pixscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
711			char *res, int res_len, int flags)
712			{
713			int ret;
714
715		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
716		✗	if (ret < 0)
717		✗	return ret;
718
719		✗	return pixscope_config_input(ctx->inputs[0]);
720			}
721
722			static const AVFilterPad pixscope_inputs[] = {
723			{
724			.name = "default",
725			.type = AVMEDIA_TYPE_VIDEO,
726			.filter_frame = pixscope_filter_frame,
727			.config_props = pixscope_config_input,
728			},
729			};
730
731			const AVFilter ff_vf_pixscope = {
732			.name = "pixscope",
733			.description = NULL_IF_CONFIG_SMALL("Pixel data analysis."),
734			.priv_size = sizeof(PixscopeContext),
735			.priv_class = &pixscope_class,
736			FILTER_INPUTS(pixscope_inputs),
737			FILTER_OUTPUTS(ff_video_default_filterpad),
738			FILTER_QUERY_FUNC(query_formats),
739			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
740			.process_command = pixscope_process_command,
741			};
742
743			typedef struct PixelValues {
744			uint16_t p[4];
745			} PixelValues;
746
747			typedef struct OscilloscopeContext {
748			const AVClass *class;
749
750			float xpos, ypos;
751			float tx, ty;
752			float size;
753			float tilt;
754			float theight, twidth;
755			float o;
756			int components;
757			int grid;
758			int statistics;
759			int scope;
760
761			int x1, y1, x2, y2;
762			int ox, oy;
763			int height, width;
764
765			int max;
766			int nb_planes;
767			int nb_comps;
768			int is_rgb;
769			uint8_t rgba_map[4];
770			FFDrawContext draw;
771			FFDrawColor dark;
772			FFDrawColor black;
773			FFDrawColor white;
774			FFDrawColor green;
775			FFDrawColor blue;
776			FFDrawColor red;
777			FFDrawColor cyan;
778			FFDrawColor magenta;
779			FFDrawColor gray;
780			FFDrawColor *colors[4];
781
782			int nb_values;
783			PixelValues *values;
784
785			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
786			void (*draw_trace)(struct OscilloscopeContext *s, AVFrame *frame);
787			} OscilloscopeContext;
788
789			#define OOFFSET(x) offsetof(OscilloscopeContext, x)
790
791			static const AVOption oscilloscope_options[] = {
792			{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
793			{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
794			{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
795			{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
796			{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
797			{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
798			{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGSR },
799			{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGSR },
800			{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGSR },
801			{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGSR },
802			{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
803			{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
804			{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
805			{ NULL }
806			};
807
808			AVFILTER_DEFINE_CLASS(oscilloscope);
809
810		✗	static void oscilloscope_uninit(AVFilterContext *ctx)
811			{
812		✗	OscilloscopeContext *s = ctx->priv;
813
814		✗	av_freep(&s->values);
815		✗	}
816
817		✗	static void draw_line(FFDrawContext *draw, int x0, int y0, int x1, int y1,
818			AVFrame *out, FFDrawColor *color)
819			{
820		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
821		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
822		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
823			int p, i;
824
825			for (;;) {
826		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
827		✗	for (p = 0; p < draw->nb_planes; p++) {
828		✗	if (draw->desc->comp[p].depth == 8) {
829		✗	if (draw->nb_planes == 1) {
830		✗	for (i = 0; i < draw->desc->nb_components; i++) {
831		✗	out->data[0][y0 * out->linesize[0] + x0 * draw->pixelstep[0] + i] = color->comp[0].u8[i];
832			}
833			} else {
834		✗	out->data[p][out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p])] = color->comp[p].u8[0];
835			}
836			} else {
837		✗	if (draw->nb_planes == 1) {
838		✗	for (i = 0; i < draw->desc->nb_components; i++) {
839		✗	AV_WN16(out->data[0] + y0 * out->linesize[0] + (x0 * draw->pixelstep[0] + i), color->comp[0].u16[i]);
840			}
841			} else {
842		✗	AV_WN16(out->data[p] + out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p]) * 2, color->comp[p].u16[0]);
843			}
844			}
845			}
846			}
847
848		✗	if (x0 == x1 && y0 == y1)
849		✗	break;
850
851		✗	e2 = err;
852
853		✗	if (e2 >-dx) {
854		✗	err -= dy;
855		✗	x0 += sx;
856			}
857
858		✗	if (e2 < dy) {
859		✗	err += dx;
860		✗	y0 += sy;
861			}
862			}
863		✗	}
864
865		✗	static void draw_trace8(OscilloscopeContext *s, AVFrame *frame)
866			{
867			int i, c;
868
869		✗	for (i = 1; i < s->nb_values; i++) {
870		✗	for (c = 0; c < s->nb_comps; c++) {
871		✗	if ((1 << c) & s->components) {
872		✗	int x = i * s->width / s->nb_values;
873		✗	int px = (i - 1) * s->width / s->nb_values;
874		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / 256;
875		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / 256;
876
877		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
878			}
879			}
880			}
881		✗	}
882
883
884		✗	static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
885			{
886			int i, c;
887
888		✗	for (i = 1; i < s->nb_values; i++) {
889		✗	for (c = 0; c < s->nb_comps; c++) {
890		✗	if ((1 << c) & s->components) {
891		✗	int x = i * s->width / s->nb_values;
892		✗	int px = (i - 1) * s->width / s->nb_values;
893		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / s->max;
894		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / s->max;
895
896		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
897			}
898			}
899			}
900		✗	}
901
902		✗	static void update_oscilloscope(AVFilterContext *ctx)
903			{
904		✗	OscilloscopeContext *s = ctx->priv;
905		✗	AVFilterLink *inlink = ctx->inputs[0];
906			int cx, cy, size;
907			double tilt;
908
909		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
910		✗	s->height = s->theight * inlink->h;
911		✗	s->width = s->twidth * inlink->w;
912		✗	size = hypot(inlink->w, inlink->h);
913		✗	size *= s->size;
914		✗	tilt = (s->tilt - 0.5) * M_PI;
915		✗	cx = s->xpos * (inlink->w - 1);
916		✗	cy = s->ypos * (inlink->h - 1);
917		✗	s->x1 = cx - size / 2.0 * cos(tilt);
918		✗	s->x2 = cx + size / 2.0 * cos(tilt);
919		✗	s->y1 = cy - size / 2.0 * sin(tilt);
920		✗	s->y2 = cy + size / 2.0 * sin(tilt);
921		✗	s->ox = (inlink->w - s->width) * s->tx;
922		✗	s->oy = (inlink->h - s->height) * s->ty;
923		✗	}
924
925		✗	static int oscilloscope_config_input(AVFilterLink *inlink)
926			{
927		✗	OscilloscopeContext *s = inlink->dst->priv;
928			int size;
929
930		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
931		✗	ff_draw_init(&s->draw, inlink->format, 0);
932		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
933		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
934		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
935		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
936		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
937		✗	ff_draw_color(&s->draw, &s->cyan, (uint8_t[]){ 0, 255, 255, 255} );
938		✗	ff_draw_color(&s->draw, &s->magenta, (uint8_t[]){ 255, 0, 255, 255} );
939		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 128, 128, 128, 255} );
940		✗	s->nb_comps = s->draw.desc->nb_components;
941		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
942
943		✗	if (s->is_rgb) {
944		✗	s->colors[0] = &s->red;
945		✗	s->colors[1] = &s->green;
946		✗	s->colors[2] = &s->blue;
947		✗	s->colors[3] = &s->white;
948		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
949			} else {
950		✗	s->colors[0] = &s->white;
951		✗	s->colors[1] = &s->cyan;
952		✗	s->colors[2] = &s->magenta;
953		✗	s->colors[3] = &s->white;
954		✗	s->rgba_map[0] = 0;
955		✗	s->rgba_map[1] = 1;
956		✗	s->rgba_map[2] = 2;
957		✗	s->rgba_map[3] = 3;
958			}
959
960		✗	if (s->draw.desc->comp[0].depth <= 8) {
961		✗	s->pick_color = pick_color8;
962		✗	s->draw_trace = draw_trace8;
963			} else {
964		✗	s->pick_color = pick_color16;
965		✗	s->draw_trace = draw_trace16;
966			}
967
968		✗	s->max = (1 << s->draw.desc->comp[0].depth);
969		✗	size = hypot(inlink->w, inlink->h);
970
971		✗	s->values = av_calloc(size, sizeof(*s->values));
972		✗	if (!s->values)
973		✗	return AVERROR(ENOMEM);
974
975		✗	update_oscilloscope(inlink->dst);
976
977		✗	return 0;
978			}
979
980		✗	static void draw_scope(OscilloscopeContext *s, int x0, int y0, int x1, int y1,
981			AVFrame *out, PixelValues *p, int state)
982			{
983		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
984		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
985		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
986
987			for (;;) {
988		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
989		✗	FFDrawColor color = { { 0 } };
990		✗	int value[4] = { 0 };
991
992		✗	s->pick_color(&s->draw, &color, out, x0, y0, value);
993		✗	s->values[s->nb_values].p[0] = value[0];
994		✗	s->values[s->nb_values].p[1] = value[1];
995		✗	s->values[s->nb_values].p[2] = value[2];
996		✗	s->values[s->nb_values].p[3] = value[3];
997		✗	s->nb_values++;
998
999		✗	if (s->scope) {
1000		✗	if (s->draw.desc->comp[0].depth == 8) {
1001		✗	if (s->draw.nb_planes == 1) {
1002			int i;
1003
1004		✗	for (i = 0; i < s->nb_comps; i++)
1005		✗	out->data[0][out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i] = 255 * ((s->nb_values + state) & 1);
1006			} else {
1007		✗	out->data[0][out->linesize[0] * y0 + x0] = 255 * ((s->nb_values + state) & 1);
1008			}
1009			} else {
1010		✗	if (s->draw.nb_planes == 1) {
1011			int i;
1012
1013		✗	for (i = 0; i < s->nb_comps; i++)
1014		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i, (s->max - 1) * ((s->nb_values + state) & 1));
1015			} else {
1016		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0, (s->max - 1) * ((s->nb_values + state) & 1));
1017			}
1018			}
1019			}
1020			}
1021
1022		✗	if (x0 == x1 && y0 == y1)
1023		✗	break;
1024
1025		✗	e2 = err;
1026
1027		✗	if (e2 >-dx) {
1028		✗	err -= dy;
1029		✗	x0 += sx;
1030			}
1031
1032		✗	if (e2 < dy) {
1033		✗	err += dx;
1034		✗	y0 += sy;
1035			}
1036			}
1037		✗	}
1038
1039		✗	static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
1040			{
1041		✗	AVFilterContext *ctx = inlink->dst;
1042		✗	OscilloscopeContext *s = ctx->priv;
1043		✗	AVFilterLink *outlink = ctx->outputs[0];
1044		✗	float average[4] = { 0 };
1045		✗	int max[4] = { 0 };
1046		✗	int min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
1047			int i, c;
1048
1049		✗	s->nb_values = 0;
1050		✗	draw_scope(s, s->x1, s->y1, s->x2, s->y2, frame, s->values, inlink->frame_count_in & 1);
1051		✗	ff_blend_rectangle(&s->draw, &s->dark, frame->data, frame->linesize,
1052			frame->width, frame->height,
1053		✗	s->ox, s->oy, s->width, s->height + 20 * s->statistics);
1054
1055		✗	if (s->grid && outlink->h >= 10) {
1056		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1057		✗	s->ox, s->oy, s->width - 1, 1);
1058
1059		✗	for (i = 1; i < 5; i++) {
1060		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1061		✗	s->ox, s->oy + i * (s->height - 1) / 4, s->width, 1);
1062			}
1063
1064		✗	for (i = 0; i < 10; i++) {
1065		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1066		✗	s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
1067			}
1068
1069		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1070		✗	s->ox + s->width - 1, s->oy, 1, s->height);
1071			}
1072
1073		✗	s->draw_trace(s, frame);
1074
1075		✗	for (i = 0; i < s->nb_values; i++) {
1076		✗	for (c = 0; c < s->nb_comps; c++) {
1077		✗	if ((1 << c) & s->components) {
1078		✗	max[c] = FFMAX(max[c], s->values[i].p[s->rgba_map[c]]);
1079		✗	min[c] = FFMIN(min[c], s->values[i].p[s->rgba_map[c]]);
1080		✗	average[c] += s->values[i].p[s->rgba_map[c]];
1081			}
1082			}
1083			}
1084		✗	for (c = 0; c < s->nb_comps; c++) {
1085		✗	average[c] /= s->nb_values;
1086			}
1087
1088		✗	if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
1089		✗	for (c = 0, i = 0; c < s->nb_comps; c++) {
1090		✗	if ((1 << c) & s->components) {
1091		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
1092		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
1093			char text[128];
1094
1095		✗	snprintf(text, sizeof(text), "%c avg:%.1f min:%d max:%d\n", s->is_rgb ? rgba[c] : yuva[c], average[c], min[c], max[c]);
1096		✗	draw_text(&s->draw, frame, &s->white, s->ox + 2 + 280 * i++, s->oy + s->height + 4, text, 0);
1097			}
1098			}
1099			}
1100
1101		✗	return ff_filter_frame(outlink, frame);
1102			}
1103
1104		✗	static int oscilloscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
1105			char *res, int res_len, int flags)
1106			{
1107			int ret;
1108
1109		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
1110		✗	if (ret < 0)
1111		✗	return ret;
1112
1113		✗	update_oscilloscope(ctx);
1114
1115		✗	return 0;
1116			}
1117
1118			static const AVFilterPad oscilloscope_inputs[] = {
1119			{
1120			.name = "default",
1121			.type = AVMEDIA_TYPE_VIDEO,
1122			.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
1123			.filter_frame = oscilloscope_filter_frame,
1124			.config_props = oscilloscope_config_input,
1125			},
1126			};
1127
1128			const AVFilter ff_vf_oscilloscope = {
1129			.name = "oscilloscope",
1130			.description = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
1131			.priv_size = sizeof(OscilloscopeContext),
1132			.priv_class = &oscilloscope_class,
1133			.uninit = oscilloscope_uninit,
1134			FILTER_INPUTS(oscilloscope_inputs),
1135			FILTER_OUTPUTS(ff_video_default_filterpad),
1136			FILTER_QUERY_FUNC(query_formats),
1137			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
1138			.process_command = oscilloscope_process_command,
1139			};
1140