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		✗	const uint8_t *cga_font = avpriv_cga_font_get();
92		✗	int x = x0;
93
94		✗	for (; *text; text++) {
95		✗	if (*text == '\n') {
96		✗	x = x0;
97		✗	y0 += 8;
98		✗	continue;
99			}
100		✗	ff_blend_mask(draw, color, frame->data, frame->linesize,
101			frame->width, frame->height,
102		✗	&cga_font[*text * 8], 1, 8, 8, 0, 0, x, y0);
103		✗	if (vertical) {
104		✗	x = x0;
105		✗	y0 += 8;
106			} else {
107		✗	x += 8;
108			}
109			}
110		✗	}
111
112		✗	static void pick_color8(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
113			{
114			int p, i;
115
116		✗	color->rgba[3] = 255;
117		✗	for (p = 0; p < draw->nb_planes; p++) {
118		✗	if (draw->nb_planes == 1) {
119		✗	for (i = 0; i < 4; i++) {
120		✗	value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
121		✗	color->comp[0].u8[i] = value[i];
122			}
123			} else {
124		✗	value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
125		✗	color->comp[p].u8[0] = value[p];
126			}
127			}
128		✗	}
129
130		✗	static void pick_color16(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
131			{
132			int p, i;
133
134		✗	color->rgba[3] = 255;
135		✗	for (p = 0; p < draw->nb_planes; p++) {
136		✗	if (draw->nb_planes == 1) {
137		✗	for (i = 0; i < 4; i++) {
138		✗	value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
139		✗	color->comp[0].u16[i] = value[i];
140			}
141			} else {
142		✗	value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
143		✗	color->comp[p].u16[0] = value[p];
144			}
145			}
146		✗	}
147
148		✗	static void reverse_color8(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
149			{
150			int p;
151
152		✗	reverse->rgba[3] = 255;
153		✗	for (p = 0; p < draw->nb_planes; p++) {
154		✗	reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
155		✗	reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
156		✗	reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
157			}
158		✗	}
159
160		✗	static void reverse_color16(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
161			{
162			int p;
163
164		✗	reverse->rgba[3] = 255;
165		✗	for (p = 0; p < draw->nb_planes; p++) {
166		✗	const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
167		✗	const unsigned mid = (max + 1) / 2;
168
169		✗	reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
170		✗	reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
171		✗	reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
172			}
173		✗	}
174
175			typedef struct ThreadData {
176			AVFrame *in, *out;
177			int xoff, yoff, PP;
178			} ThreadData;
179
180		✗	static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
181			{
182		✗	DatascopeContext *s = ctx->priv;
183		✗	AVFilterLink *outlink = ctx->outputs[0];
184		✗	AVFilterLink *inlink = ctx->inputs[0];
185		✗	ThreadData *td = arg;
186		✗	AVFrame *in = td->in;
187		✗	AVFrame *out = td->out;
188		✗	const int PP = td->PP;
189		✗	const int xoff = td->xoff;
190		✗	const int yoff = td->yoff;
191		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
192		✗	const int C = s->chars;
193		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
194		✗	const int W = (outlink->w - xoff) / (C * 10);
195		✗	const int H = (outlink->h - yoff) / (PP * 12);
196		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
197		✗	const int slice_start = (W * jobnr) / nb_jobs;
198		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
199			int x, y, p;
200
201		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
202		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
203		✗	FFDrawColor color = { { 0 } };
204		✗	FFDrawColor reverse = { { 0 } };
205		✗	int value[4] = { 0 }, pp = 0;
206
207		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
208		✗	s->reverse_color(&s->draw, &color, &reverse);
209		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
210		✗	xoff + x * C * 10, yoff + y * PP * 12, C * 10, PP * 12);
211
212		✗	for (p = 0; p < P; p++) {
213			char text[256];
214
215		✗	if (!(s->components & (1 << p)))
216		✗	continue;
217		✗	snprintf(text, sizeof(text), format[D], value[p]);
218		✗	draw_text(&s->draw, out, &reverse, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
219		✗	pp++;
220			}
221			}
222			}
223
224		✗	return 0;
225			}
226
227		✗	static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
228			{
229		✗	DatascopeContext *s = ctx->priv;
230		✗	AVFilterLink *outlink = ctx->outputs[0];
231		✗	AVFilterLink *inlink = ctx->inputs[0];
232		✗	ThreadData *td = arg;
233		✗	AVFrame *in = td->in;
234		✗	AVFrame *out = td->out;
235		✗	const int PP = td->PP;
236		✗	const int xoff = td->xoff;
237		✗	const int yoff = td->yoff;
238		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
239		✗	const int C = s->chars;
240		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
241		✗	const int W = (outlink->w - xoff) / (C * 10);
242		✗	const int H = (outlink->h - yoff) / (PP * 12);
243		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
244		✗	const int slice_start = (W * jobnr) / nb_jobs;
245		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
246			int x, y, p;
247
248		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
249		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
250		✗	FFDrawColor color = { { 0 } };
251		✗	int value[4] = { 0 }, pp = 0;
252
253		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
254
255		✗	for (p = 0; p < P; p++) {
256			char text[256];
257
258		✗	if (!(s->components & (1 << p)))
259		✗	continue;
260		✗	snprintf(text, sizeof(text), format[D], value[p]);
261		✗	draw_text(&s->draw, out, &color, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
262		✗	pp++;
263			}
264			}
265			}
266
267		✗	return 0;
268			}
269
270		✗	static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
271			{
272		✗	DatascopeContext *s = ctx->priv;
273		✗	AVFilterLink *outlink = ctx->outputs[0];
274		✗	AVFilterLink *inlink = ctx->inputs[0];
275		✗	ThreadData *td = arg;
276		✗	AVFrame *in = td->in;
277		✗	AVFrame *out = td->out;
278		✗	const int PP = td->PP;
279		✗	const int xoff = td->xoff;
280		✗	const int yoff = td->yoff;
281		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
282		✗	const int C = s->chars;
283		✗	const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
284		✗	const int W = (outlink->w - xoff) / (C * 10);
285		✗	const int H = (outlink->h - yoff) / (PP * 12);
286		✗	const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
287		✗	const int slice_start = (W * jobnr) / nb_jobs;
288		✗	const int slice_end = (W * (jobnr+1)) / nb_jobs;
289			int x, y, p;
290
291		✗	for (y = 0; y < H && (y + s->y < inlink->h); y++) {
292		✗	for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
293		✗	FFDrawColor color = { { 0 } };
294		✗	int value[4] = { 0 }, pp = 0;
295
296		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
297		✗	for (p = 0; p < P; p++) {
298			char text[256];
299
300		✗	if (!(s->components & (1 << p)))
301		✗	continue;
302		✗	snprintf(text, sizeof(text), format[D], value[p]);
303		✗	draw_text(&s->draw, out, &s->white, xoff + x * C * 10 + 2, yoff + y * PP * 12 + pp * 10 + 2, text, 0);
304		✗	pp++;
305			}
306			}
307			}
308
309		✗	return 0;
310			}
311
312		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *in)
313			{
314		✗	AVFilterContext *ctx = inlink->dst;
315		✗	DatascopeContext *s = ctx->priv;
316		✗	AVFilterLink *outlink = ctx->outputs[0];
317		✗	const int P = FFMAX(s->nb_planes, s->nb_comps);
318		✗	ThreadData td = { 0 };
319		✗	int ymaxlen = 0;
320		✗	int xmaxlen = 0;
321		✗	int PP = 0;
322			AVFrame *out;
323
324		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
325		✗	if (!out) {
326		✗	av_frame_free(&in);
327		✗	return AVERROR(ENOMEM);
328			}
329		✗	av_frame_copy_props(out, in);
330
331		✗	ff_fill_rectangle(&s->draw, &s->black, out->data, out->linesize,
332			0, 0, outlink->w, outlink->h);
333
334		✗	for (int p = 0; p < P; p++) {
335		✗	if (s->components & (1 << p))
336		✗	PP++;
337			}
338		✗	PP = FFMAX(PP, 1);
339
340		✗	if (s->axis) {
341		✗	const int C = s->chars;
342		✗	int Y = outlink->h / (PP * 12);
343		✗	int X = outlink->w / (C * 10);
344		✗	char text[256] = { 0 };
345			int x, y;
346
347		✗	snprintf(text, sizeof(text), "%d", s->y + Y);
348		✗	ymaxlen = strlen(text);
349		✗	ymaxlen *= 10;
350		✗	snprintf(text, sizeof(text), "%d", s->x + X);
351		✗	xmaxlen = strlen(text);
352		✗	xmaxlen *= 10;
353
354		✗	Y = (outlink->h - xmaxlen) / (PP * 12);
355		✗	X = (outlink->w - ymaxlen) / (C * 10);
356
357		✗	for (y = 0; y < Y; y++) {
358		✗	snprintf(text, sizeof(text), "%d", s->y + y);
359
360		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
361		✗	0, xmaxlen + y * PP * 12 + (PP + 1) * PP - 2, ymaxlen, 10);
362
363		✗	draw_text(&s->draw, out, &s->yellow, 2, xmaxlen + y * PP * 12 + (PP + 1) * PP, text, 0);
364			}
365
366		✗	for (x = 0; x < X; x++) {
367		✗	snprintf(text, sizeof(text), "%d", s->x + x);
368
369		✗	ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
370		✗	ymaxlen + x * C * 10 + 2 * C - 2, 0, 10, xmaxlen);
371
372		✗	draw_text(&s->draw, out, &s->yellow, ymaxlen + x * C * 10 + 2 * C, 2, text, 1);
373			}
374			}
375
376		✗	td.in = in; td.out = out, td.yoff = xmaxlen, td.xoff = ymaxlen, td.PP = PP;
377		✗	ff_filter_execute(ctx, s->filter, &td, NULL,
378		✗	FFMIN(ff_filter_get_nb_threads(ctx), FFMAX(outlink->w / 20, 1)));
379
380		✗	av_frame_free(&in);
381		✗	return ff_filter_frame(outlink, out);
382			}
383
384		✗	static int config_input(AVFilterLink *inlink)
385			{
386		✗	AVFilterContext *ctx = inlink->dst;
387		✗	DatascopeContext *s = ctx->priv;
388
389		✗	uint8_t alpha = s->opacity * 255;
390			int ret;
391
392		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
393		✗	ret = ff_draw_init2(&s->draw, inlink->format, inlink->colorspace, inlink->color_range, 0);
394		✗	if (ret < 0) {
395		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
396		✗	return ret;
397			}
398		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
399		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, alpha} );
400		✗	ff_draw_color(&s->draw, &s->yellow, (uint8_t[]){ 255, 255, 0, 255} );
401		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 77, 77, 77, 255} );
402		✗	s->chars = (s->draw.desc->comp[0].depth + 7) / 8 * 2 + s->dformat;
403		✗	s->nb_comps = s->draw.desc->nb_components;
404
405		✗	switch (s->mode) {
406		✗	case 0: s->filter = filter_mono; break;
407		✗	case 1: s->filter = filter_color; break;
408		✗	case 2: s->filter = filter_color2; break;
409			}
410
411		✗	if (s->draw.desc->comp[0].depth <= 8) {
412		✗	s->pick_color = pick_color8;
413		✗	s->reverse_color = reverse_color8;
414			} else {
415		✗	s->pick_color = pick_color16;
416		✗	s->reverse_color = reverse_color16;
417			}
418
419		✗	return 0;
420			}
421
422		✗	static int config_output(AVFilterLink *outlink)
423			{
424		✗	DatascopeContext *s = outlink->src->priv;
425
426		✗	outlink->h = s->oh;
427		✗	outlink->w = s->ow;
428		✗	outlink->sample_aspect_ratio = (AVRational){1,1};
429
430		✗	return 0;
431			}
432
433		✗	static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
434			char *res, int res_len, int flags)
435			{
436			int ret;
437
438		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
439		✗	if (ret < 0)
440		✗	return ret;
441
442		✗	return config_input(ctx->inputs[0]);
443			}
444
445			static const AVFilterPad inputs[] = {
446			{
447			.name = "default",
448			.type = AVMEDIA_TYPE_VIDEO,
449			.filter_frame = filter_frame,
450			.config_props = config_input,
451			},
452			};
453
454			static const AVFilterPad outputs[] = {
455			{
456			.name = "default",
457			.type = AVMEDIA_TYPE_VIDEO,
458			.config_props = config_output,
459			},
460			};
461
462			const FFFilter ff_vf_datascope = {
463			.p.name = "datascope",
464			.p.description = NULL_IF_CONFIG_SMALL("Video data analysis."),
465			.p.priv_class = &datascope_class,
466			.p.flags = AVFILTER_FLAG_SLICE_THREADS,
467			.priv_size = sizeof(DatascopeContext),
468			FILTER_INPUTS(inputs),
469			FILTER_OUTPUTS(outputs),
470			FILTER_QUERY_FUNC2(query_formats),
471			.process_command = process_command,
472			};
473
474			typedef struct PixscopeContext {
475			const AVClass *class;
476
477			float xpos, ypos;
478			float wx, wy;
479			int w, h;
480			float o;
481
482			int x, y;
483			int ww, wh;
484
485			int nb_planes;
486			int nb_comps;
487			int is_rgb;
488			uint8_t rgba_map[4];
489			FFDrawContext draw;
490			FFDrawColor dark;
491			FFDrawColor black;
492			FFDrawColor white;
493			FFDrawColor green;
494			FFDrawColor blue;
495			FFDrawColor red;
496			FFDrawColor *colors[4];
497
498			uint16_t values[4][80][80];
499
500			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
501			} PixscopeContext;
502
503			#define POFFSET(x) offsetof(PixscopeContext, x)
504
505			static const AVOption pixscope_options[] = {
506			{ "x", "set scope x offset", POFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
507			{ "y", "set scope y offset", POFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
508			{ "w", "set scope width", POFFSET(w), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
509			{ "h", "set scope height", POFFSET(h), AV_OPT_TYPE_INT, {.i64=7}, 1, 80, FLAGSR },
510			{ "o", "set window opacity", POFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
511			{ "wx", "set window x offset", POFFSET(wx), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
512			{ "wy", "set window y offset", POFFSET(wy), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1, FLAGSR },
513			{ NULL }
514			};
515
516			AVFILTER_DEFINE_CLASS(pixscope);
517
518		✗	static int pixscope_config_input(AVFilterLink *inlink)
519			{
520		✗	AVFilterContext *ctx = inlink->dst;
521		✗	PixscopeContext *s = ctx->priv;
522			int ret;
523
524		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
525		✗	ret = ff_draw_init(&s->draw, inlink->format, 0);
526		✗	if (ret < 0) {
527		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
528		✗	return ret;
529			}
530		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
531		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
532		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
533		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
534		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
535		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
536		✗	s->nb_comps = s->draw.desc->nb_components;
537		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
538
539		✗	if (s->is_rgb) {
540		✗	s->colors[0] = &s->red;
541		✗	s->colors[1] = &s->green;
542		✗	s->colors[2] = &s->blue;
543		✗	s->colors[3] = &s->white;
544		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
545			} else {
546		✗	s->colors[0] = &s->white;
547		✗	s->colors[1] = &s->blue;
548		✗	s->colors[2] = &s->red;
549		✗	s->colors[3] = &s->white;
550		✗	s->rgba_map[0] = 0;
551		✗	s->rgba_map[1] = 1;
552		✗	s->rgba_map[2] = 2;
553		✗	s->rgba_map[3] = 3;
554			}
555
556		✗	if (s->draw.desc->comp[0].depth <= 8) {
557		✗	s->pick_color = pick_color8;
558			} else {
559		✗	s->pick_color = pick_color16;
560			}
561
562		✗	if (inlink->w < 640 || inlink->h < 480) {
563		✗	av_log(inlink->dst, AV_LOG_ERROR, "min supported resolution is 640x480\n");
564		✗	return AVERROR(EINVAL);
565			}
566
567		✗	s->ww = 300;
568		✗	s->wh = 300 * 1.6;
569		✗	s->x = s->xpos * (inlink->w - 1);
570		✗	s->y = s->ypos * (inlink->h - 1);
571		✗	if (s->x + s->w >= inlink->w || s->y + s->h >= inlink->h) {
572		✗	av_log(inlink->dst, AV_LOG_WARNING, "scope position is out of range, clipping\n");
573		✗	s->x = FFMIN(s->x, inlink->w - s->w);
574		✗	s->y = FFMIN(s->y, inlink->h - s->h);
575			}
576
577		✗	return 0;
578			}
579
580			#define SQR(x) ((x)*(x))
581
582		✗	static int pixscope_filter_frame(AVFilterLink *inlink, AVFrame *in)
583			{
584		✗	AVFilterContext *ctx = inlink->dst;
585		✗	PixscopeContext *s = ctx->priv;
586		✗	AVFilterLink *outlink = ctx->outputs[0];
587		✗	AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
588		✗	int max[4] = { 0 }, min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
589		✗	float average[4] = { 0 };
590		✗	double std[4] = { 0 }, rms[4] = { 0 };
591		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
592		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
593			int x, y, X, Y, i, w, h;
594			char text[128];
595
596		✗	if (!out) {
597		✗	av_frame_free(&in);
598		✗	return AVERROR(ENOMEM);
599			}
600		✗	av_frame_copy_props(out, in);
601		✗	av_frame_copy(out, in);
602
603		✗	w = s->ww / s->w;
604		✗	h = s->ww / s->h;
605
606		✗	if (s->wx >= 0) {
607		✗	X = (in->width - s->ww) * s->wx;
608			} else {
609		✗	X = (in->width - s->ww) * -s->wx;
610			}
611		✗	if (s->wy >= 0) {
612		✗	Y = (in->height - s->wh) * s->wy;
613			} else {
614		✗	Y = (in->height - s->wh) * -s->wy;
615			}
616
617		✗	if (s->wx < 0) {
618		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
619		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
620		✗	X = (in->width - s->ww) * (1 + s->wx);
621			}
622			}
623
624		✗	if (s->wy < 0) {
625		✗	if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
626		✗	s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
627		✗	Y = (in->height - s->wh) * (1 + s->wy);
628			}
629			}
630
631		✗	ff_blend_rectangle(&s->draw, &s->dark, out->data, out->linesize,
632			out->width, out->height,
633			X,
634			Y,
635			s->ww,
636			s->wh);
637
638		✗	for (y = 0; y < s->h; y++) {
639		✗	for (x = 0; x < s->w; x++) {
640		✗	FFDrawColor color = { { 0 } };
641		✗	int value[4] = { 0 };
642
643		✗	s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
644		✗	ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
645		✗	x * w + (s->ww - 4 - (s->w * w)) / 2 + X, y * h + 2 + Y, w, h);
646		✗	for (i = 0; i < 4; i++) {
647		✗	s->values[i][x][y] = value[i];
648		✗	rms[i] += (double)value[i] * (double)value[i];
649		✗	average[i] += value[i];
650		✗	min[i] = FFMIN(min[i], value[i]);
651		✗	max[i] = FFMAX(max[i], value[i]);
652			}
653			}
654			}
655
656		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
657			out->width, out->height,
658		✗	s->x - 2, s->y - 2, s->w + 4, 1);
659
660		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
661			out->width, out->height,
662		✗	s->x - 1, s->y - 1, s->w + 2, 1);
663
664		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
665			out->width, out->height,
666		✗	s->x - 1, s->y - 1, 1, s->h + 2);
667
668		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
669			out->width, out->height,
670		✗	s->x - 2, s->y - 2, 1, s->h + 4);
671
672		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
673			out->width, out->height,
674		✗	s->x - 1, s->y + 1 + s->h, s->w + 3, 1);
675
676		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
677			out->width, out->height,
678		✗	s->x - 2, s->y + 2 + s->h, s->w + 4, 1);
679
680		✗	ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
681			out->width, out->height,
682		✗	s->x + 1 + s->w, s->y - 1, 1, s->h + 2);
683
684		✗	ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
685			out->width, out->height,
686		✗	s->x + 2 + s->w, s->y - 2, 1, s->h + 5);
687
688		✗	for (i = 0; i < 4; i++) {
689		✗	rms[i] /= s->w * s->h;
690		✗	rms[i] = sqrt(rms[i]);
691		✗	average[i] /= s->w * s->h;
692			}
693
694		✗	for (y = 0; y < s->h; y++) {
695		✗	for (x = 0; x < s->w; x++) {
696		✗	for (i = 0; i < 4; i++)
697		✗	std[i] += SQR(s->values[i][x][y] - average[i]);
698			}
699			}
700
701		✗	for (i = 0; i < 4; i++) {
702		✗	std[i] /= s->w * s->h;
703		✗	std[i] = sqrt(std[i]);
704			}
705
706		✗	snprintf(text, sizeof(text), "CH AVG MIN MAX RMS\n");
707		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 5, text, 0);
708		✗	for (i = 0; i < s->nb_comps; i++) {
709		✗	int c = s->rgba_map[i];
710
711		✗	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]);
712		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 1), text, 0);
713			}
714		✗	snprintf(text, sizeof(text), "CH STD\n");
715		✗	draw_text(&s->draw, out, &s->white, X + 28, Y + s->ww + 15 * (0 + 5), text, 0);
716		✗	for (i = 0; i < s->nb_comps; i++) {
717		✗	int c = s->rgba_map[i];
718
719		✗	snprintf(text, sizeof(text), "%c %07.2f\n", s->is_rgb ? rgba[i] : yuva[i], std[c]);
720		✗	draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 6), text, 0);
721			}
722
723		✗	av_frame_free(&in);
724		✗	return ff_filter_frame(outlink, out);
725			}
726
727		✗	static int pixscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
728			char *res, int res_len, int flags)
729			{
730			int ret;
731
732		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
733		✗	if (ret < 0)
734		✗	return ret;
735
736		✗	return pixscope_config_input(ctx->inputs[0]);
737			}
738
739			static const AVFilterPad pixscope_inputs[] = {
740			{
741			.name = "default",
742			.type = AVMEDIA_TYPE_VIDEO,
743			.filter_frame = pixscope_filter_frame,
744			.config_props = pixscope_config_input,
745			},
746			};
747
748			const FFFilter ff_vf_pixscope = {
749			.p.name = "pixscope",
750			.p.description = NULL_IF_CONFIG_SMALL("Pixel data analysis."),
751			.p.priv_class = &pixscope_class,
752			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
753			.priv_size = sizeof(PixscopeContext),
754			FILTER_INPUTS(pixscope_inputs),
755			FILTER_OUTPUTS(ff_video_default_filterpad),
756			FILTER_QUERY_FUNC2(query_formats),
757			.process_command = pixscope_process_command,
758			};
759
760			typedef struct PixelValues {
761			uint16_t p[4];
762			} PixelValues;
763
764			typedef struct OscilloscopeContext {
765			const AVClass *class;
766
767			float xpos, ypos;
768			float tx, ty;
769			float size;
770			float tilt;
771			float theight, twidth;
772			float o;
773			int components;
774			int grid;
775			int statistics;
776			int scope;
777
778			int x1, y1, x2, y2;
779			int ox, oy;
780			int height, width;
781
782			int max;
783			int nb_planes;
784			int nb_comps;
785			int is_rgb;
786			uint8_t rgba_map[4];
787			FFDrawContext draw;
788			FFDrawColor dark;
789			FFDrawColor black;
790			FFDrawColor white;
791			FFDrawColor green;
792			FFDrawColor blue;
793			FFDrawColor red;
794			FFDrawColor cyan;
795			FFDrawColor magenta;
796			FFDrawColor gray;
797			FFDrawColor *colors[4];
798
799			int nb_values;
800			PixelValues *values;
801
802			void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
803			void (*draw_trace)(struct OscilloscopeContext *s, AVFrame *frame);
804			} OscilloscopeContext;
805
806			#define OOFFSET(x) offsetof(OscilloscopeContext, x)
807
808			static const AVOption oscilloscope_options[] = {
809			{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
810			{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
811			{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
812			{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
813			{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
814			{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
815			{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGSR },
816			{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGSR },
817			{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGSR },
818			{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGSR },
819			{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
820			{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
821			{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
822			{ NULL }
823			};
824
825			AVFILTER_DEFINE_CLASS(oscilloscope);
826
827		✗	static void oscilloscope_uninit(AVFilterContext *ctx)
828			{
829		✗	OscilloscopeContext *s = ctx->priv;
830
831		✗	av_freep(&s->values);
832		✗	}
833
834		✗	static void draw_line(FFDrawContext *draw, int x0, int y0, int x1, int y1,
835			AVFrame *out, FFDrawColor *color)
836			{
837		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
838		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
839		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
840			int p, i;
841
842			for (;;) {
843		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
844		✗	for (p = 0; p < draw->nb_planes; p++) {
845		✗	if (draw->desc->comp[p].depth == 8) {
846		✗	if (draw->nb_planes == 1) {
847		✗	for (i = 0; i < draw->desc->nb_components; i++) {
848		✗	out->data[0][y0 * out->linesize[0] + x0 * draw->pixelstep[0] + i] = color->comp[0].u8[i];
849			}
850			} else {
851		✗	out->data[p][out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p])] = color->comp[p].u8[0];
852			}
853			} else {
854		✗	if (draw->nb_planes == 1) {
855		✗	for (i = 0; i < draw->desc->nb_components; i++) {
856		✗	AV_WN16(out->data[0] + y0 * out->linesize[0] + (x0 * draw->pixelstep[0] + i), color->comp[0].u16[i]);
857			}
858			} else {
859		✗	AV_WN16(out->data[p] + out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p]) * 2, color->comp[p].u16[0]);
860			}
861			}
862			}
863			}
864
865		✗	if (x0 == x1 && y0 == y1)
866		✗	break;
867
868		✗	e2 = err;
869
870		✗	if (e2 >-dx) {
871		✗	err -= dy;
872		✗	x0 += sx;
873			}
874
875		✗	if (e2 < dy) {
876		✗	err += dx;
877		✗	y0 += sy;
878			}
879			}
880		✗	}
881
882		✗	static void draw_trace8(OscilloscopeContext *s, AVFrame *frame)
883			{
884			int i, c;
885
886		✗	for (i = 1; i < s->nb_values; i++) {
887		✗	for (c = 0; c < s->nb_comps; c++) {
888		✗	if ((1 << c) & s->components) {
889		✗	int x = i * s->width / s->nb_values;
890		✗	int px = (i - 1) * s->width / s->nb_values;
891		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / 256;
892		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / 256;
893
894		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
895			}
896			}
897			}
898		✗	}
899
900
901		✗	static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
902			{
903			int i, c;
904
905		✗	for (i = 1; i < s->nb_values; i++) {
906		✗	for (c = 0; c < s->nb_comps; c++) {
907		✗	if ((1 << c) & s->components) {
908		✗	int x = i * s->width / s->nb_values;
909		✗	int px = (i - 1) * s->width / s->nb_values;
910		✗	int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / s->max;
911		✗	int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / s->max;
912
913		✗	draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
914			}
915			}
916			}
917		✗	}
918
919		✗	static void update_oscilloscope(AVFilterContext *ctx)
920			{
921		✗	OscilloscopeContext *s = ctx->priv;
922		✗	AVFilterLink *inlink = ctx->inputs[0];
923			int cx, cy, size;
924			double tilt;
925
926		✗	ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
927		✗	s->height = s->theight * inlink->h;
928		✗	s->width = s->twidth * inlink->w;
929		✗	size = hypot(inlink->w, inlink->h);
930		✗	size *= s->size;
931		✗	tilt = (s->tilt - 0.5) * M_PI;
932		✗	cx = s->xpos * (inlink->w - 1);
933		✗	cy = s->ypos * (inlink->h - 1);
934		✗	s->x1 = cx - size / 2.0 * cos(tilt);
935		✗	s->x2 = cx + size / 2.0 * cos(tilt);
936		✗	s->y1 = cy - size / 2.0 * sin(tilt);
937		✗	s->y2 = cy + size / 2.0 * sin(tilt);
938		✗	s->ox = (inlink->w - s->width) * s->tx;
939		✗	s->oy = (inlink->h - s->height) * s->ty;
940		✗	}
941
942		✗	static int oscilloscope_config_input(AVFilterLink *inlink)
943			{
944		✗	AVFilterContext *ctx = inlink->dst;
945		✗	OscilloscopeContext *s = ctx->priv;
946			int size;
947			int ret;
948
949		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
950		✗	ret = ff_draw_init(&s->draw, inlink->format, 0);
951		✗	if (ret < 0) {
952		✗	av_log(ctx, AV_LOG_ERROR, "Failed to initialize FFDrawContext\n");
953		✗	return ret;
954			}
955		✗	ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
956		✗	ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
957		✗	ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
958		✗	ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
959		✗	ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
960		✗	ff_draw_color(&s->draw, &s->cyan, (uint8_t[]){ 0, 255, 255, 255} );
961		✗	ff_draw_color(&s->draw, &s->magenta, (uint8_t[]){ 255, 0, 255, 255} );
962		✗	ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 128, 128, 128, 255} );
963		✗	s->nb_comps = s->draw.desc->nb_components;
964		✗	s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
965
966		✗	if (s->is_rgb) {
967		✗	s->colors[0] = &s->red;
968		✗	s->colors[1] = &s->green;
969		✗	s->colors[2] = &s->blue;
970		✗	s->colors[3] = &s->white;
971		✗	ff_fill_rgba_map(s->rgba_map, inlink->format);
972			} else {
973		✗	s->colors[0] = &s->white;
974		✗	s->colors[1] = &s->cyan;
975		✗	s->colors[2] = &s->magenta;
976		✗	s->colors[3] = &s->white;
977		✗	s->rgba_map[0] = 0;
978		✗	s->rgba_map[1] = 1;
979		✗	s->rgba_map[2] = 2;
980		✗	s->rgba_map[3] = 3;
981			}
982
983		✗	if (s->draw.desc->comp[0].depth <= 8) {
984		✗	s->pick_color = pick_color8;
985		✗	s->draw_trace = draw_trace8;
986			} else {
987		✗	s->pick_color = pick_color16;
988		✗	s->draw_trace = draw_trace16;
989			}
990
991		✗	s->max = (1 << s->draw.desc->comp[0].depth);
992		✗	size = hypot(inlink->w, inlink->h);
993
994		✗	s->values = av_calloc(size, sizeof(*s->values));
995		✗	if (!s->values)
996		✗	return AVERROR(ENOMEM);
997
998		✗	update_oscilloscope(inlink->dst);
999
1000		✗	return 0;
1001			}
1002
1003		✗	static void draw_scope(OscilloscopeContext *s, int x0, int y0, int x1, int y1,
1004			AVFrame *out, PixelValues *p, int state)
1005			{
1006		✗	int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
1007		✗	int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
1008		✗	int err = (dx > dy ? dx : -dy) / 2, e2;
1009
1010			for (;;) {
1011		✗	if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
1012		✗	FFDrawColor color = { { 0 } };
1013		✗	int value[4] = { 0 };
1014
1015		✗	s->pick_color(&s->draw, &color, out, x0, y0, value);
1016		✗	s->values[s->nb_values].p[0] = value[0];
1017		✗	s->values[s->nb_values].p[1] = value[1];
1018		✗	s->values[s->nb_values].p[2] = value[2];
1019		✗	s->values[s->nb_values].p[3] = value[3];
1020		✗	s->nb_values++;
1021
1022		✗	if (s->scope) {
1023		✗	if (s->draw.desc->comp[0].depth == 8) {
1024		✗	if (s->draw.nb_planes == 1) {
1025			int i;
1026
1027		✗	for (i = 0; i < s->nb_comps; i++)
1028		✗	out->data[0][out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i] = 255 * ((s->nb_values + state) & 1);
1029			} else {
1030		✗	out->data[0][out->linesize[0] * y0 + x0] = 255 * ((s->nb_values + state) & 1);
1031			}
1032			} else {
1033		✗	if (s->draw.nb_planes == 1) {
1034			int i;
1035
1036		✗	for (i = 0; i < s->nb_comps; i++)
1037		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i, (s->max - 1) * ((s->nb_values + state) & 1));
1038			} else {
1039		✗	AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0, (s->max - 1) * ((s->nb_values + state) & 1));
1040			}
1041			}
1042			}
1043			}
1044
1045		✗	if (x0 == x1 && y0 == y1)
1046		✗	break;
1047
1048		✗	e2 = err;
1049
1050		✗	if (e2 >-dx) {
1051		✗	err -= dy;
1052		✗	x0 += sx;
1053			}
1054
1055		✗	if (e2 < dy) {
1056		✗	err += dx;
1057		✗	y0 += sy;
1058			}
1059			}
1060		✗	}
1061
1062		✗	static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
1063			{
1064		✗	FilterLink *inl = ff_filter_link(inlink);
1065		✗	AVFilterContext *ctx = inlink->dst;
1066		✗	OscilloscopeContext *s = ctx->priv;
1067		✗	AVFilterLink *outlink = ctx->outputs[0];
1068		✗	float average[4] = { 0 };
1069		✗	int max[4] = { 0 };
1070		✗	int min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
1071			int i, c;
1072
1073		✗	s->nb_values = 0;
1074		✗	draw_scope(s, s->x1, s->y1, s->x2, s->y2, frame, s->values, inl->frame_count_in & 1);
1075		✗	ff_blend_rectangle(&s->draw, &s->dark, frame->data, frame->linesize,
1076			frame->width, frame->height,
1077		✗	s->ox, s->oy, s->width, s->height + 20 * s->statistics);
1078
1079		✗	if (s->grid && outlink->h >= 10) {
1080		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1081		✗	s->ox, s->oy, s->width - 1, 1);
1082
1083		✗	for (i = 1; i < 5; i++) {
1084		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1085		✗	s->ox, s->oy + i * (s->height - 1) / 4, s->width, 1);
1086			}
1087
1088		✗	for (i = 0; i < 10; i++) {
1089		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1090		✗	s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
1091			}
1092
1093		✗	ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1094		✗	s->ox + s->width - 1, s->oy, 1, s->height);
1095			}
1096
1097		✗	s->draw_trace(s, frame);
1098
1099		✗	for (i = 0; i < s->nb_values; i++) {
1100		✗	for (c = 0; c < s->nb_comps; c++) {
1101		✗	if ((1 << c) & s->components) {
1102		✗	max[c] = FFMAX(max[c], s->values[i].p[s->rgba_map[c]]);
1103		✗	min[c] = FFMIN(min[c], s->values[i].p[s->rgba_map[c]]);
1104		✗	average[c] += s->values[i].p[s->rgba_map[c]];
1105			}
1106			}
1107			}
1108		✗	for (c = 0; c < s->nb_comps; c++) {
1109		✗	average[c] /= s->nb_values;
1110			}
1111
1112		✗	if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
1113		✗	for (c = 0, i = 0; c < s->nb_comps; c++) {
1114		✗	if ((1 << c) & s->components) {
1115		✗	const char rgba[4] = { 'R', 'G', 'B', 'A' };
1116		✗	const char yuva[4] = { 'Y', 'U', 'V', 'A' };
1117			char text[128];
1118
1119		✗	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]);
1120		✗	draw_text(&s->draw, frame, &s->white, s->ox + 2 + 280 * i++, s->oy + s->height + 4, text, 0);
1121			}
1122			}
1123			}
1124
1125		✗	return ff_filter_frame(outlink, frame);
1126			}
1127
1128		✗	static int oscilloscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
1129			char *res, int res_len, int flags)
1130			{
1131			int ret;
1132
1133		✗	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
1134		✗	if (ret < 0)
1135		✗	return ret;
1136
1137		✗	update_oscilloscope(ctx);
1138
1139		✗	return 0;
1140			}
1141
1142			static const AVFilterPad oscilloscope_inputs[] = {
1143			{
1144			.name = "default",
1145			.type = AVMEDIA_TYPE_VIDEO,
1146			.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
1147			.filter_frame = oscilloscope_filter_frame,
1148			.config_props = oscilloscope_config_input,
1149			},
1150			};
1151
1152			const FFFilter ff_vf_oscilloscope = {
1153			.p.name = "oscilloscope",
1154			.p.description = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
1155			.p.priv_class = &oscilloscope_class,
1156			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
1157			.priv_size = sizeof(OscilloscopeContext),
1158			.uninit = oscilloscope_uninit,
1159			FILTER_INPUTS(oscilloscope_inputs),
1160			FILTER_OUTPUTS(ff_video_default_filterpad),
1161			FILTER_QUERY_FUNC2(query_formats),
1162			.process_command = oscilloscope_process_command,
1163			};
1164