FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_datascope.c
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 0 556 0.0%
Functions: 0 25 0.0%
Branches: 0 282 0.0%

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