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