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 "filters.h"
29			#include "formats.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(const AVFilterContext *ctx,
81			AVFilterFormatsConfig **cfg_in,
82			AVFilterFormatsConfig **cfg_out)
83			{
84		✗	return ff_set_common_formats2(ctx, cfg_in, cfg_out,
85			ff_draw_supported_pixel_formats(0));
86			}
87
88		✗	static void draw_text(FFDrawContext *draw, AVFrame *frame, FFDrawColor *color,
89			int x0, int y0, const uint8_t *text, int vertical)
90			{
91		✗	int x = x0;
92
93		✗	for (; *text; text++) {
94		✗	if (*text == '\n') {
95		✗	x = x0;
96		✗	y0 += 8;
97		✗	continue;
98			}
99		✗	ff_blend_mask(draw, color, frame->data, frame->linesize,
100			frame->width, frame->height,
101		✗	avpriv_cga_font + *text * 8, 1, 8, 8, 0, 0, x, y0);
102		✗	if (vertical) {
103		✗	x = x0;
104		✗	y0 += 8;
105			} else {
106		✗	x += 8;
107			}
108			}
109		✗	}
110
111		✗	static void pick_color8(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
112			{
113			int p, i;
114
115		✗	color->rgba[3] = 255;
116		✗	for (p = 0; p < draw->nb_planes; p++) {
117		✗	if (draw->nb_planes == 1) {
118		✗	for (i = 0; i < 4; i++) {
119		✗	value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
120		✗	color->comp[0].u8[i] = value[i];
121			}
122			} else {
123		✗	value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
124		✗	color->comp[p].u8[0] = value[p];
125			}
126			}
127		✗	}
128
129		✗	static void pick_color16(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
130			{
131			int p, i;
132
133		✗	color->rgba[3] = 255;
134		✗	for (p = 0; p < draw->nb_planes; p++) {
135		✗	if (draw->nb_planes == 1) {
136		✗	for (i = 0; i < 4; i++) {
137		✗	value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
138		✗	color->comp[0].u16[i] = value[i];
139			}
140			} else {
141		✗	value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
142		✗	color->comp[p].u16[0] = value[p];
143			}
144			}
145		✗	}
146
147		✗	static void reverse_color8(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
148			{
149			int p;
150
151		✗	reverse->rgba[3] = 255;
152		✗	for (p = 0; p < draw->nb_planes; p++) {
153		✗	reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
154		✗	reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
155		✗	reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
156			}
157		✗	}
158
159		✗	static void reverse_color16(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
160			{
161			int p;
162
163		✗	reverse->rgba[3] = 255;
164		✗	for (p = 0; p < draw->nb_planes; p++) {
165		✗	const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
166		✗	const unsigned mid = (max + 1) / 2;
167
168		✗	reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
169		✗	reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
170		✗	reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
171			}
172		✗	}
173
174			typedef struct ThreadData {
175			AVFrame *in, *out;
176			int xoff, yoff, PP;
177			} ThreadData;
178
179		✗	static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
180			{
181		✗	DatascopeContext *s = ctx->priv;
182		✗	AVFilterLink *outlink = ctx->outputs[0];
183		✗	AVFilterLink *inlink = ctx->inputs[0];
184		✗	ThreadData *td = arg;
185		✗	AVFrame *in = td->in;
186		✗	AVFrame *out = td->out;
187		✗	const int PP = td->PP;
188		✗	const int xoff = td->xoff;
189		✗	const int yoff = td->yoff;
190		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
191		✗	const int C = s->chars;
192		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
193		✗	const int W = (outlink->w - xoff) / (C * 10);
194		✗	const int H = (outlink->h - yoff) / (PP * 12);
195		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
196		✗	const int slice_start = (W * jobnr) / nb_jobs;
197		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
198			int x, y, p;
199
200		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
201		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
202		✗	FFDrawColor color = { { 0 } };
203		✗	FFDrawColor reverse = { { 0 } };
204		✗	int value[4] = { 0 }, pp = 0;
205
206		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
207		✗	s->reverse_color(&s->draw, &color, &reverse);
208		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
209		✗	xoff + x * C * 10, yoff + y * PP * 12, C * 10, PP * 12);
210
211		✗	for (p = 0; p < P; p++) {
212			char text[256];
213
214		✗	if (!(s->components & (1 << p)))
215		✗	continue;
216		✗	snprintf(text, sizeof(text), format[D], value[p]);
217		✗	draw_text(&s->draw, out, &reverse, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
218		✗	pp++;
219			}
220			}
221			}
222
223		✗	return 0;
224			}
225
226		✗	static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
227			{
228		✗	DatascopeContext *s = ctx->priv;
229		✗	AVFilterLink *outlink = ctx->outputs[0];
230		✗	AVFilterLink *inlink = ctx->inputs[0];
231		✗	ThreadData *td = arg;
232		✗	AVFrame *in = td->in;
233		✗	AVFrame *out = td->out;
234		✗	const int PP = td->PP;
235		✗	const int xoff = td->xoff;
236		✗	const int yoff = td->yoff;
237		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
238		✗	const int C = s->chars;
239		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
240		✗	const int W = (outlink->w - xoff) / (C * 10);
241		✗	const int H = (outlink->h - yoff) / (PP * 12);
242		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
243		✗	const int slice_start = (W * jobnr) / nb_jobs;
244		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
245			int x, y, p;
246
247		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
248		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
249		✗	FFDrawColor color = { { 0 } };
250		✗	int value[4] = { 0 }, pp = 0;
251
252		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
253
254		✗	for (p = 0; p < P; p++) {
255			char text[256];
256
257		✗	if (!(s->components & (1 << p)))
258		✗	continue;
259		✗	snprintf(text, sizeof(text), format[D], value[p]);
260		✗	draw_text(&s->draw, out, &color, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
261		✗	pp++;
262			}
263			}
264			}
265
266		✗	return 0;
267			}
268
269		✗	static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
270			{
271		✗	DatascopeContext *s = ctx->priv;
272		✗	AVFilterLink *outlink = ctx->outputs[0];
273		✗	AVFilterLink *inlink = ctx->inputs[0];
274		✗	ThreadData *td = arg;
275		✗	AVFrame *in = td->in;
276		✗	AVFrame *out = td->out;
277		✗	const int PP = td->PP;
278		✗	const int xoff = td->xoff;
279		✗	const int yoff = td->yoff;
280		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
281		✗	const int C = s->chars;
282		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
283		✗	const int W = (outlink->w - xoff) / (C * 10);
284		✗	const int H = (outlink->h - yoff) / (PP * 12);
285		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
286		✗	const int slice_start = (W * jobnr) / nb_jobs;
287		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
288			int x, y, p;
289
290		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
291		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
292		✗	FFDrawColor color = { { 0 } };
293		✗	int value[4] = { 0 }, pp = 0;
294
295		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
296		✗	for (p = 0; p < P; p++) {
297			char text[256];
298
299		✗	if (!(s->components & (1 << p)))
300		✗	continue;
301		✗	snprintf(text, sizeof(text), format[D], value[p]);
302		✗	draw_text(&s->draw, out, &s->white, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
303		✗	pp++;
304			}
305			}
306			}
307
308		✗	return 0;
309			}
310
311		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *in)
312			{
313		✗	AVFilterContext *ctx = inlink->dst;
314		✗	DatascopeContext *s = ctx->priv;
315		✗	AVFilterLink *outlink = ctx->outputs[0];
316		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
317		✗	ThreadData td = { 0 };
318		✗	int ymaxlen = 0;
319		✗	int xmaxlen = 0;
320		✗	int PP = 0;
321			AVFrame *out;
322
323		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
324		✗	if (!out) {
325		✗	av_frame_free(&in);
326		✗	return AVERROR(ENOMEM);
327			}
328		✗	av_frame_copy_props(out, in);
329
330		✗	ff_fill_rectangle(&s->draw, &s->black, out->data, out->linesize,
331			0, 0, outlink->w, outlink->h);
332
333		✗	for (int p = 0; p < P; p++) {
334		✗	if (s->components & (1 << p))
335		✗	PP++;
336			}
337		✗	PP = FFMAX(PP, 1);
338
339		✗	if (s->axis) {
340		✗	const int C = s->chars;
341		✗	int Y = outlink->h / (PP * 12);
342		✗	int X = outlink->w / (C * 10);
343		✗	char text[256] = { 0 };
344			int x, y;
345
346		✗	snprintf(text, sizeof(text), "%d", s->y + Y);
347		✗	ymaxlen = strlen(text);
348		✗	ymaxlen *= 10;
349		✗	snprintf(text, sizeof(text), "%d", s->x + X);
350		✗	xmaxlen = strlen(text);
351		✗	xmaxlen *= 10;
352
353		✗	Y = (outlink->h - xmaxlen) / (PP * 12);
354		✗	X = (outlink->w - ymaxlen) / (C * 10);
355
356		✗	for (y = 0; y < Y; y++) {
357		✗	snprintf(text, sizeof(text), "%d", s->y + y);
358
359		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
360		✗	0, xmaxlen + y * PP * 12 + (PP + 1) * PP - 2, ymaxlen, 10);
361
362		✗	draw_text(&s->draw, out, &s->yellow, 2, xmaxlen + y * PP * 12 + (PP + 1) * PP, text, 0);
363			}
364
365		✗	for (x = 0; x < X; x++) {
366		✗	snprintf(text, sizeof(text), "%d", s->x + x);
367
368		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
369		✗	ymaxlen + x * C * 10 + 2 * C - 2, 0, 10, xmaxlen);
370
371		✗	draw_text(&s->draw, out, &s->yellow, ymaxlen + x * C * 10 + 2 * C, 2, text, 1);
372			}
373			}
374
375		✗	td.in = in; td.out = out, td.yoff = xmaxlen, td.xoff = ymaxlen, td.PP = PP;
376		✗	ff_filter_execute(ctx, s->filter, &td, NULL,
377		✗	FFMIN(ff_filter_get_nb_threads(ctx), FFMAX(outlink->w / 20, 1)));
378
379		✗	av_frame_free(&in);
380		✗	return ff_filter_frame(outlink, out);
381			}
382
383		✗	static int config_input(AVFilterLink *inlink)
384			{
385		✗	AVFilterContext *ctx = inlink->dst;
386		✗	DatascopeContext *s = ctx->priv;
387
388		✗	uint8_t alpha = s->opacity * 255;
389			int ret;
390
391		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
392		✗	ret = ff_draw_init2(&s->draw, inlink->format, inlink->colorspace, inlink->color_range, 0);
393		✗	if (ret < 0) {
394		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
395		✗	return ret;
396			}
397		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
398		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, alpha} );
399		✗	ff_draw_color(&s->draw, &s->yellow, (uint8_t[]){ 255, 255, 0, 255} );
400		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 77, 77, 77, 255} );
401		✗	s->chars = (s->draw.desc->comp[0].depth + 7) / 8 * 2 + s->dformat;
402		✗	s->nb_comps = s->draw.desc->nb_components;
403
404		✗	switch (s->mode) {
405		✗	case 0: s->filter = filter_mono; break;
406		✗	case 1: s->filter = filter_color; break;
407		✗	case 2: s->filter = filter_color2; break;
408			}
409
410		✗	if (s->draw.desc->comp[0].depth <= 8) {
411		✗	s->pick_color = pick_color8;
412		✗	s->reverse_color = reverse_color8;
413			} else {
414		✗	s->pick_color = pick_color16;
415		✗	s->reverse_color = reverse_color16;
416			}
417
418		✗	return 0;
419			}
420
421		✗	static int config_output(AVFilterLink *outlink)
422			{
423		✗	DatascopeContext *s = outlink->src->priv;
424
425		✗	outlink->h = s->oh;
426		✗	outlink->w = s->ow;
427		✗	outlink->sample_aspect_ratio = (AVRational){1,1};
428
429		✗	return 0;
430			}
431
432		✗	static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
433			char *res, int res_len, int flags)
434			{
435			int ret;
436
437		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
438		✗	if (ret < 0)
439		✗	return ret;
440
441		✗	return config_input(ctx->inputs[0]);
442			}
443
444			static const AVFilterPad inputs[] = {
445			{
446			.name = "default",
447			.type = AVMEDIA_TYPE_VIDEO,
448			.filter_frame = filter_frame,
449			.config_props = config_input,
450			},
451			};
452
453			static const AVFilterPad outputs[] = {
454			{
455			.name = "default",
456			.type = AVMEDIA_TYPE_VIDEO,
457			.config_props = config_output,
458			},
459			};
460
461			const FFFilter ff_vf_datascope = {
462			.p.name = "datascope",
463			.p.description = NULL_IF_CONFIG_SMALL("Video data analysis."),
464			.p.priv_class = &datascope_class,
465			.p.flags = AVFILTER_FLAG_SLICE_THREADS,
466			.priv_size = sizeof(DatascopeContext),
467			FILTER_INPUTS(inputs),
468			FILTER_OUTPUTS(outputs),
469			FILTER_QUERY_FUNC2(query_formats),
470			.process_command = process_command,
471			};
472
473			typedef struct PixscopeContext {
474			const AVClass *class;
475
476			float xpos, ypos;
477			float wx, wy;
478			int w, h;
479			float o;
480
481			int x, y;
482			int ww, wh;
483
484			int nb_planes;
485			int nb_comps;
486			int is_rgb;
487			uint8_t rgba_map[4];
488			FFDrawContext draw;
489			FFDrawColor dark;
490			FFDrawColor black;
491			FFDrawColor white;
492			FFDrawColor green;
493			FFDrawColor blue;
494			FFDrawColor red;
495			FFDrawColor *colors[4];
496
497			uint16_t values[4][80][80];
498
499			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
500			} PixscopeContext;
501
502			#define POFFSET(x) offsetof(PixscopeContext, x)
503
504			static const AVOption pixscope_options[] = {
505			{ "x", "set scope x offset", POFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
506			{ "y", "set scope y offset", POFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
507			{ "w", "set scope width", POFFSET(w), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
508			{ "h", "set scope height", POFFSET(h), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
509			{ "o", "set window opacity", POFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
510			{ "wx", "set window x offset", POFFSET(wx), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
511			{ "wy", "set window y offset", POFFSET(wy), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
512			{ NULL }
513			};
514
515			AVFILTER_DEFINE_CLASS(pixscope);
516
517		✗	static int pixscope_config_input(AVFilterLink *inlink)
518			{
519		✗	AVFilterContext *ctx = inlink->dst;
520		✗	PixscopeContext *s = ctx->priv;
521			int ret;
522
523		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
524		✗	ret = ff_draw_init(&s->draw, inlink->format, 0);
525		✗	if (ret < 0) {
526		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
527		✗	return ret;
528			}
529		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
530		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
531		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
532		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
533		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
534		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
535		✗	s->nb_comps = s->draw.desc->nb_components;
536		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
537
538		✗	if (s->is_rgb) {
539		✗	s->colors[0] = &s->red;
540		✗	s->colors[1] = &s->green;
541		✗	s->colors[2] = &s->blue;
542		✗	s->colors[3] = &s->white;
543		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
544			} else {
545		✗	s->colors[0] = &s->white;
546		✗	s->colors[1] = &s->blue;
547		✗	s->colors[2] = &s->red;
548		✗	s->colors[3] = &s->white;
549		✗	s->rgba_map[0] = 0;
550		✗	s->rgba_map[1] = 1;
551		✗	s->rgba_map[2] = 2;
552		✗	s->rgba_map[3] = 3;
553			}
554
555		✗	if (s->draw.desc->comp[0].depth <= 8) {
556		✗	s->pick_color = pick_color8;
557			} else {
558		✗	s->pick_color = pick_color16;
559			}
560
561		✗	if (inlink->w < 640 || inlink->h < 480) {
562		✗	av_log(inlink->dst, AV_LOG_ERROR, "min supported resolution is 640x480\n");
563		✗	return AVERROR(EINVAL);
564			}
565
566		✗	s->ww = 300;
567		✗	s->wh = 300 * 1.6;
568		✗	s->x = s->xpos * (inlink->w - 1);
569		✗	s->y = s->ypos * (inlink->h - 1);
570		✗	if (s->x + s->w >= inlink->w || s->y + s->h >= inlink->h) {
571		✗	av_log(inlink->dst, AV_LOG_WARNING, "scope position is out of range, clipping\n");
572		✗	s->x = FFMIN(s->x, inlink->w - s->w);
573		✗	s->y = FFMIN(s->y, inlink->h - s->h);
574			}
575
576		✗	return 0;
577			}
578
579			#define SQR(x) ((x)*(x))
580
581		✗	static int pixscope_filter_frame(AVFilterLink *inlink, AVFrame *in)
582			{
583		✗	AVFilterContext *ctx = inlink->dst;
584		✗	PixscopeContext *s = ctx->priv;
585		✗	AVFilterLink *outlink = ctx->outputs[0];
586		✗	AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
587		✗	int max[4] = { 0 }, min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
588		✗	float average[4] = { 0 };
589		✗	double std[4] = { 0 }, rms[4] = { 0 };
590		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
591		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
592			int x, y, X, Y, i, w, h;
593			char text[128];
594
595		✗	if (!out) {
596		✗	av_frame_free(&in);
597		✗	return AVERROR(ENOMEM);
598			}
599		✗	av_frame_copy_props(out, in);
600		✗	av_frame_copy(out, in);
601
602		✗	w = s->ww / s->w;
603		✗	h = s->ww / s->h;
604
605		✗	if (s->wx >= 0) {
606		✗	X = (in->width - s->ww) * s->wx;
607			} else {
608		✗	X = (in->width - s->ww) * -s->wx;
609			}
610		✗	if (s->wy >= 0) {
611		✗	Y = (in->height - s->wh) * s->wy;
612			} else {
613		✗	Y = (in->height - s->wh) * -s->wy;
614			}
615
616		✗	if (s->wx < 0) {
617		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
618		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
619		✗	X = (in->width - s->ww) * (1 + s->wx);
620			}
621			}
622
623		✗	if (s->wy < 0) {
624		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
625		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
626		✗	Y = (in->height - s->wh) * (1 + s->wy);
627			}
628			}
629
630		✗	ff_blend_rectangle(&s->draw, &s->dark, out->data, out->linesize,
631			out->width, out->height,
632			X,
633			Y,
634			s->ww,
635			s->wh);
636
637		✗	for (y = 0; y < s->h; y++) {
638		✗	for (x = 0; x < s->w; x++) {
639		✗	FFDrawColor color = { { 0 } };
640		✗	int value[4] = { 0 };
641
642		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
643		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
644		✗	x * w + (s->ww - 4 - (s->w * w)) / 2 + X, y * h + 2 + Y, w, h);
645		✗	for (i = 0; i < 4; i++) {
646		✗	s->values[i][x][y] = value[i];
647		✗	rms[i] += (double)value[i] * (double)value[i];
648		✗	average[i] += value[i];
649		✗	min[i] = FFMIN(min[i], value[i]);
650		✗	max[i] = FFMAX(max[i], value[i]);
651			}
652			}
653			}
654
655		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
656			out->width, out->height,
657		✗	s->x - 2, s->y - 2, s->w + 4, 1);
658
659		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
660			out->width, out->height,
661		✗	s->x - 1, s->y - 1, s->w + 2, 1);
662
663		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
664			out->width, out->height,
665		✗	s->x - 1, 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->y - 2, 1, s->h + 4);
670
671		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
672			out->width, out->height,
673		✗	s->x - 1, s->y + 1 + s->h, s->w + 3, 1);
674
675		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
676			out->width, out->height,
677		✗	s->x - 2, s->y + 2 + s->h, s->w + 4, 1);
678
679		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
680			out->width, out->height,
681		✗	s->x + 1 + s->w, s->y - 1, 1, s->h + 2);
682
683		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
684			out->width, out->height,
685		✗	s->x + 2 + s->w, s->y - 2, 1, s->h + 5);
686
687		✗	for (i = 0; i < 4; i++) {
688		✗	rms[i] /= s->w * s->h;
689		✗	rms[i] = sqrt(rms[i]);
690		✗	average[i] /= s->w * s->h;
691			}
692
693		✗	for (y = 0; y < s->h; y++) {
694		✗	for (x = 0; x < s->w; x++) {
695		✗	for (i = 0; i < 4; i++)
696		✗	std[i] += SQR(s->values[i][x][y] - average[i]);
697			}
698			}
699
700		✗	for (i = 0; i < 4; i++) {
701		✗	std[i] /= s->w * s->h;
702		✗	std[i] = sqrt(std[i]);
703			}
704
705		✗	snprintf(text, sizeof(text), "CH AVG MIN MAX RMS\n");
706		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 5, text, 0);
707		✗	for (i = 0; i < s->nb_comps; i++) {
708		✗	int c = s->rgba_map[i];
709
710		✗	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]);
711		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 1), text, 0);
712			}
713		✗	snprintf(text, sizeof(text), "CH STD\n");
714		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 15 * (0 + 5), text, 0);
715		✗	for (i = 0; i < s->nb_comps; i++) {
716		✗	int c = s->rgba_map[i];
717
718		✗	snprintf(text, sizeof(text), "%c %07.2f\n", s->is_rgb ? rgba[i] : yuva[i], std[c]);
719		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 6), text, 0);
720			}
721
722		✗	av_frame_free(&in);
723		✗	return ff_filter_frame(outlink, out);
724			}
725
726		✗	static int pixscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
727			char *res, int res_len, int flags)
728			{
729			int ret;
730
731		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
732		✗	if (ret < 0)
733		✗	return ret;
734
735		✗	return pixscope_config_input(ctx->inputs[0]);
736			}
737
738			static const AVFilterPad pixscope_inputs[] = {
739			{
740			.name = "default",
741			.type = AVMEDIA_TYPE_VIDEO,
742			.filter_frame = pixscope_filter_frame,
743			.config_props = pixscope_config_input,
744			},
745			};
746
747			const FFFilter ff_vf_pixscope = {
748			.p.name = "pixscope",
749			.p.description = NULL_IF_CONFIG_SMALL("Pixel data analysis."),
750			.p.priv_class = &pixscope_class,
751			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
752			.priv_size = sizeof(PixscopeContext),
753			FILTER_INPUTS(pixscope_inputs),
754			FILTER_OUTPUTS(ff_video_default_filterpad),
755			FILTER_QUERY_FUNC2(query_formats),
756			.process_command = pixscope_process_command,
757			};
758
759			typedef struct PixelValues {
760			uint16_t p[4];
761			} PixelValues;
762
763			typedef struct OscilloscopeContext {
764			const AVClass *class;
765
766			float xpos, ypos;
767			float tx, ty;
768			float size;
769			float tilt;
770			float theight, twidth;
771			float o;
772			int components;
773			int grid;
774			int statistics;
775			int scope;
776
777			int x1, y1, x2, y2;
778			int ox, oy;
779			int height, width;
780
781			int max;
782			int nb_planes;
783			int nb_comps;
784			int is_rgb;
785			uint8_t rgba_map[4];
786			FFDrawContext draw;
787			FFDrawColor dark;
788			FFDrawColor black;
789			FFDrawColor white;
790			FFDrawColor green;
791			FFDrawColor blue;
792			FFDrawColor red;
793			FFDrawColor cyan;
794			FFDrawColor magenta;
795			FFDrawColor gray;
796			FFDrawColor *colors[4];
797
798			int nb_values;
799			PixelValues *values;
800
801			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
802			void (*draw_trace)(struct OscilloscopeContext *s, AVFrame *frame);
803			} OscilloscopeContext;
804
805			#define OOFFSET(x) offsetof(OscilloscopeContext, x)
806
807			static const AVOption oscilloscope_options[] = {
808			{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
809			{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
810			{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
811			{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
812			{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
813			{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
814			{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGSR },
815			{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGSR },
816			{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGSR },
817			{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGSR },
818			{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
819			{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
820			{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
821			{ NULL }
822			};
823
824			AVFILTER_DEFINE_CLASS(oscilloscope);
825
826		✗	static void oscilloscope_uninit(AVFilterContext *ctx)
827			{
828		✗	OscilloscopeContext *s = ctx->priv;
829
830		✗	av_freep(&s->values);
831		✗	}
832
833		✗	static void draw_line(FFDrawContext *draw, int x0, int y0, int x1, int y1,
834			AVFrame *out, FFDrawColor *color)
835			{
836		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
837		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
838		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
839			int p, i;
840
841			for (;;) {
842		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
843		✗	for (p = 0; p < draw->nb_planes; p++) {
844		✗	if (draw->desc->comp[p].depth == 8) {
845		✗	if (draw->nb_planes == 1) {
846		✗	for (i = 0; i < draw->desc->nb_components; i++) {
847		✗	out->data[0][y0 * out->linesize[0] + x0 * draw->pixelstep[0] + i] = color->comp[0].u8[i];
848			}
849			} else {
850		✗	out->data[p][out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p])] = color->comp[p].u8[0];
851			}
852			} else {
853		✗	if (draw->nb_planes == 1) {
854		✗	for (i = 0; i < draw->desc->nb_components; i++) {
855		✗	AV_WN16(out->data[0] + y0 * out->linesize[0] + (x0 * draw->pixelstep[0] + i), color->comp[0].u16[i]);
856			}
857			} else {
858		✗	AV_WN16(out->data[p] + out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p]) * 2, color->comp[p].u16[0]);
859			}
860			}
861			}
862			}
863
864		✗	if (x0 == x1 && y0 == y1)
865		✗	break;
866
867		✗	e2 = err;
868
869		✗	if (e2 >-dx) {
870		✗	err -= dy;
871		✗	x0 += sx;
872			}
873
874		✗	if (e2 < dy) {
875		✗	err += dx;
876		✗	y0 += sy;
877			}
878			}
879		✗	}
880
881		✗	static void draw_trace8(OscilloscopeContext *s, AVFrame *frame)
882			{
883			int i, c;
884
885		✗	for (i = 1; i < s->nb_values; i++) {
886		✗	for (c = 0; c < s->nb_comps; c++) {
887		✗	if ((1 << c) & s->components) {
888		✗	int x = i * s->width / s->nb_values;
889		✗	int px = (i - 1) * s->width / s->nb_values;
890		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / 256;
891		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / 256;
892
893		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
894			}
895			}
896			}
897		✗	}
898
899
900		✗	static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
901			{
902			int i, c;
903
904		✗	for (i = 1; i < s->nb_values; i++) {
905		✗	for (c = 0; c < s->nb_comps; c++) {
906		✗	if ((1 << c) & s->components) {
907		✗	int x = i * s->width / s->nb_values;
908		✗	int px = (i - 1) * s->width / s->nb_values;
909		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / s->max;
910		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / s->max;
911
912		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
913			}
914			}
915			}
916		✗	}
917
918		✗	static void update_oscilloscope(AVFilterContext *ctx)
919			{
920		✗	OscilloscopeContext *s = ctx->priv;
921		✗	AVFilterLink *inlink = ctx->inputs[0];
922			int cx, cy, size;
923			double tilt;
924
925		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
926		✗	s->height = s->theight * inlink->h;
927		✗	s->width = s->twidth * inlink->w;
928		✗	size = hypot(inlink->w, inlink->h);
929		✗	size *= s->size;
930		✗	tilt = (s->tilt - 0.5) * M_PI;
931		✗	cx = s->xpos * (inlink->w - 1);
932		✗	cy = s->ypos * (inlink->h - 1);
933		✗	s->x1 = cx - size / 2.0 * cos(tilt);
934		✗	s->x2 = cx + size / 2.0 * cos(tilt);
935		✗	s->y1 = cy - size / 2.0 * sin(tilt);
936		✗	s->y2 = cy + size / 2.0 * sin(tilt);
937		✗	s->ox = (inlink->w - s->width) * s->tx;
938		✗	s->oy = (inlink->h - s->height) * s->ty;
939		✗	}
940
941		✗	static int oscilloscope_config_input(AVFilterLink *inlink)
942			{
943		✗	AVFilterContext *ctx = inlink->dst;
944		✗	OscilloscopeContext *s = ctx->priv;
945			int size;
946			int ret;
947
948		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
949		✗	ret = ff_draw_init(&s->draw, inlink->format, 0);
950		✗	if (ret < 0) {
951		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
952		✗	return ret;
953			}
954		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
955		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
956		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
957		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
958		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
959		✗	ff_draw_color(&s->draw, &s->cyan, (uint8_t[]){ 0, 255, 255, 255} );
960		✗	ff_draw_color(&s->draw, &s->magenta, (uint8_t[]){ 255, 0, 255, 255} );
961		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 128, 128, 128, 255} );
962		✗	s->nb_comps = s->draw.desc->nb_components;
963		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
964
965		✗	if (s->is_rgb) {
966		✗	s->colors[0] = &s->red;
967		✗	s->colors[1] = &s->green;
968		✗	s->colors[2] = &s->blue;
969		✗	s->colors[3] = &s->white;
970		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
971			} else {
972		✗	s->colors[0] = &s->white;
973		✗	s->colors[1] = &s->cyan;
974		✗	s->colors[2] = &s->magenta;
975		✗	s->colors[3] = &s->white;
976		✗	s->rgba_map[0] = 0;
977		✗	s->rgba_map[1] = 1;
978		✗	s->rgba_map[2] = 2;
979		✗	s->rgba_map[3] = 3;
980			}
981
982		✗	if (s->draw.desc->comp[0].depth <= 8) {
983		✗	s->pick_color = pick_color8;
984		✗	s->draw_trace = draw_trace8;
985			} else {
986		✗	s->pick_color = pick_color16;
987		✗	s->draw_trace = draw_trace16;
988			}
989
990		✗	s->max = (1 << s->draw.desc->comp[0].depth);
991		✗	size = hypot(inlink->w, inlink->h);
992
993		✗	s->values = av_calloc(size, sizeof(*s->values));
994		✗	if (!s->values)
995		✗	return AVERROR(ENOMEM);
996
997		✗	update_oscilloscope(inlink->dst);
998
999		✗	return 0;
1000			}
1001
1002		✗	static void draw_scope(OscilloscopeContext *s, int x0, int y0, int x1, int y1,
1003			AVFrame *out, PixelValues *p, int state)
1004			{
1005		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
1006		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
1007		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
1008
1009			for (;;) {
1010		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
1011		✗	FFDrawColor color = { { 0 } };
1012		✗	int value[4] = { 0 };
1013
1014		✗	s->pick_color(&s->draw, &color, out, x0, y0, value);
1015		✗	s->values[s->nb_values].p[0] = value[0];
1016		✗	s->values[s->nb_values].p[1] = value[1];
1017		✗	s->values[s->nb_values].p[2] = value[2];
1018		✗	s->values[s->nb_values].p[3] = value[3];
1019		✗	s->nb_values++;
1020
1021		✗	if (s->scope) {
1022		✗	if (s->draw.desc->comp[0].depth == 8) {
1023		✗	if (s->draw.nb_planes == 1) {
1024			int i;
1025
1026		✗	for (i = 0; i < s->nb_comps; i++)
1027		✗	out->data[0][out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i] = 255 * ((s->nb_values + state) & 1);
1028			} else {
1029		✗	out->data[0][out->linesize[0] * y0 + x0] = 255 * ((s->nb_values + state) & 1);
1030			}
1031			} else {
1032		✗	if (s->draw.nb_planes == 1) {
1033			int i;
1034
1035		✗	for (i = 0; i < s->nb_comps; i++)
1036		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i, (s->max - 1) * ((s->nb_values + state) & 1));
1037			} else {
1038		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0, (s->max - 1) * ((s->nb_values + state) & 1));
1039			}
1040			}
1041			}
1042			}
1043
1044		✗	if (x0 == x1 && y0 == y1)
1045		✗	break;
1046
1047		✗	e2 = err;
1048
1049		✗	if (e2 >-dx) {
1050		✗	err -= dy;
1051		✗	x0 += sx;
1052			}
1053
1054		✗	if (e2 < dy) {
1055		✗	err += dx;
1056		✗	y0 += sy;
1057			}
1058			}
1059		✗	}
1060
1061		✗	static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
1062			{
1063		✗	FilterLink *inl = ff_filter_link(inlink);
1064		✗	AVFilterContext *ctx = inlink->dst;
1065		✗	OscilloscopeContext *s = ctx->priv;
1066		✗	AVFilterLink *outlink = ctx->outputs[0];
1067		✗	float average[4] = { 0 };
1068		✗	int max[4] = { 0 };
1069		✗	int min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
1070			int i, c;
1071
1072		✗	s->nb_values = 0;
1073		✗	draw_scope(s, s->x1, s->y1, s->x2, s->y2, frame, s->values, inl->frame_count_in & 1);
1074		✗	ff_blend_rectangle(&s->draw, &s->dark, frame->data, frame->linesize,
1075			frame->width, frame->height,
1076		✗	s->ox, s->oy, s->width, s->height + 20 * s->statistics);
1077
1078		✗	if (s->grid && outlink->h >= 10) {
1079		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1080		✗	s->ox, s->oy, s->width - 1, 1);
1081
1082		✗	for (i = 1; i < 5; i++) {
1083		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1084		✗	s->ox, s->oy + i * (s->height - 1) / 4, s->width, 1);
1085			}
1086
1087		✗	for (i = 0; i < 10; i++) {
1088		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1089		✗	s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
1090			}
1091
1092		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1093		✗	s->ox + s->width - 1, s->oy, 1, s->height);
1094			}
1095
1096		✗	s->draw_trace(s, frame);
1097
1098		✗	for (i = 0; i < s->nb_values; i++) {
1099		✗	for (c = 0; c < s->nb_comps; c++) {
1100		✗	if ((1 << c) & s->components) {
1101		✗	max[c] = FFMAX(max[c], s->values[i].p[s->rgba_map[c]]);
1102		✗	min[c] = FFMIN(min[c], s->values[i].p[s->rgba_map[c]]);
1103		✗	average[c] += s->values[i].p[s->rgba_map[c]];
1104			}
1105			}
1106			}
1107		✗	for (c = 0; c < s->nb_comps; c++) {
1108		✗	average[c] /= s->nb_values;
1109			}
1110
1111		✗	if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
1112		✗	for (c = 0, i = 0; c < s->nb_comps; c++) {
1113		✗	if ((1 << c) & s->components) {
1114		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
1115		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
1116			char text[128];
1117
1118		✗	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]);
1119		✗	draw_text(&s->draw, frame, &s->white, s->ox + 2 + 280 * i++, s->oy + s->height + 4, text, 0);
1120			}
1121			}
1122			}
1123
1124		✗	return ff_filter_frame(outlink, frame);
1125			}
1126
1127		✗	static int oscilloscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
1128			char *res, int res_len, int flags)
1129			{
1130			int ret;
1131
1132		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
1133		✗	if (ret < 0)
1134		✗	return ret;
1135
1136		✗	update_oscilloscope(ctx);
1137
1138		✗	return 0;
1139			}
1140
1141			static const AVFilterPad oscilloscope_inputs[] = {
1142			{
1143			.name = "default",
1144			.type = AVMEDIA_TYPE_VIDEO,
1145			.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
1146			.filter_frame = oscilloscope_filter_frame,
1147			.config_props = oscilloscope_config_input,
1148			},
1149			};
1150
1151			const FFFilter ff_vf_oscilloscope = {
1152			.p.name = "oscilloscope",
1153			.p.description = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
1154			.p.priv_class = &oscilloscope_class,
1155			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
1156			.priv_size = sizeof(OscilloscopeContext),
1157			.uninit = oscilloscope_uninit,
1158			FILTER_INPUTS(oscilloscope_inputs),
1159			FILTER_OUTPUTS(ff_video_default_filterpad),
1160			FILTER_QUERY_FUNC2(query_formats),
1161			.process_command = oscilloscope_process_command,
1162			};
1163