FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vsrc_gradients.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 0 229 0.0%
Functions: 0 12 0.0%
Branches: 0 97 0.0%
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1 /*
2 * Copyright (c) 2020 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 "avfilter.h"
22 #include "filters.h"
23 #include "video.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/lfg.h"
27 #include "libavutil/random_seed.h"
28 #include <float.h>
29 #include <math.h>
30
31 typedef struct GradientsContext {
32 const AVClass *class;
33 int w, h;
34 int type;
35 AVRational frame_rate;
36 int64_t pts;
37 int64_t duration; ///< duration expressed in microseconds
38 float speed;
39 float angle;
40
41 uint8_t color_rgba[8][4];
42 float color_rgbaf[8][4];
43 int nb_colors;
44 int x0, y0, x1, y1;
45 float fx0, fy0, fx1, fy1;
46
47 int64_t seed;
48
49 AVLFG lfg;
50 int (*draw_slice)(AVFilterContext *ctx, void *arg, int job, int nb_jobs);
51 } GradientsContext;
52
53 #define OFFSET(x) offsetof(GradientsContext, x)
54 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
55 #define VFT AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
56
57 static const AVOption gradients_options[] = {
58 {"size", "set frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="640x480"}, 0, 0, FLAGS },
59 {"s", "set frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="640x480"}, 0, 0, FLAGS },
60 {"rate", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
61 {"r", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
62 {"c0", "set 1st color", OFFSET(color_rgba[0]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
63 {"c1", "set 2nd color", OFFSET(color_rgba[1]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
64 {"c2", "set 3rd color", OFFSET(color_rgba[2]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
65 {"c3", "set 4th color", OFFSET(color_rgba[3]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
66 {"c4", "set 5th color", OFFSET(color_rgba[4]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
67 {"c5", "set 6th color", OFFSET(color_rgba[5]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
68 {"c6", "set 7th color", OFFSET(color_rgba[6]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
69 {"c7", "set 8th color", OFFSET(color_rgba[7]), AV_OPT_TYPE_COLOR, {.str = "random"}, 0, 0, FLAGS },
70 {"x0", "set gradient line source x0", OFFSET(x0), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, FLAGS },
71 {"y0", "set gradient line source y0", OFFSET(y0), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, FLAGS },
72 {"x1", "set gradient line destination x1", OFFSET(x1), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, FLAGS },
73 {"y1", "set gradient line destination y1", OFFSET(y1), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, FLAGS },
74 {"nb_colors", "set the number of colors", OFFSET(nb_colors), AV_OPT_TYPE_INT, {.i64=2}, 2, 8, FLAGS },
75 {"n", "set the number of colors", OFFSET(nb_colors), AV_OPT_TYPE_INT, {.i64=2}, 2, 8, FLAGS },
76 {"seed", "set the seed", OFFSET(seed), AV_OPT_TYPE_INT64, {.i64=-1}, -1, UINT32_MAX, FLAGS },
77 {"duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
78 {"d", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
79 {"speed", "set gradients rotation speed", OFFSET(speed), AV_OPT_TYPE_FLOAT,{.dbl=0.01}, 0, 1, VFT },
80 {"type", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 4, VFT, .unit = "type" },
81 {"t", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 4, VFT, .unit = "type" },
82 { "linear", "set linear gradient", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VFT, .unit = "type" },
83 { "radial", "set radial gradient", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, VFT, .unit = "type" },
84 { "circular", "set circular gradient", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, VFT, .unit = "type" },
85 { "spiral", "set spiral gradient", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, VFT, .unit = "type" },
86 { "square", "set square gradient", 0, AV_OPT_TYPE_CONST, {.i64=4}, 0, 0, VFT, .unit = "type" },
87 {NULL},
88 };
89
90 AVFILTER_DEFINE_CLASS(gradients);
91
92 ✗ static float lerpf(float a, float b, float x)
93 {
94 ✗ const float y = 1.f - x;
95
96 ✗ return a * y + b * x;
97 }
98
99 ✗ static uint32_t lerp_color(uint8_t c0[4], uint8_t c1[4], float x)
100 {
101 ✗ const float y = 1.f - x;
102
103 ✗ return (lrintf(c0[0] * y + c1[0] * x)) << 0 |
104 ✗ (lrintf(c0[1] * y + c1[1] * x)) << 8 |
105 ✗ (lrintf(c0[2] * y + c1[2] * x)) << 16 |
106 ✗ (lrintf(c0[3] * y + c1[3] * x)) << 24;
107 }
108
109 ✗ static uint64_t lerp_color16(uint8_t c0[4], uint8_t c1[4], float x)
110 {
111 ✗ const float y = 1.f - x;
112
113 ✗ return ((uint64_t)llrintf((c0[0] * y + c1[0] * x) * 256)) << 0 |
114 ✗ ((uint64_t)llrintf((c0[1] * y + c1[1] * x) * 256)) << 16 |
115 ✗ ((uint64_t)llrintf((c0[2] * y + c1[2] * x) * 256)) << 32 |
116 ✗ ((uint64_t)llrintf((c0[3] * y + c1[3] * x) * 256)) << 48;
117 }
118
119 ✗ static uint32_t lerp_colors(uint8_t arr[8][4], int nb_colors, int nb_wrap_colors, float step)
120 {
121 float scl;
122 int i, j;
123
124 ✗ if (nb_colors == 1 || step <= 0.0) {
125 ✗ return arr[0][0] | (arr[0][1] << 8) | (arr[0][2] << 16) | (arr[0][3] << 24);
126 ✗ } else if (step >= 1.0) {
127 ✗ i = nb_colors - 1;
128 ✗ return arr[i][0] | (arr[i][1] << 8) | (arr[i][2] << 16) | (arr[i][3] << 24);
129 }
130
131 ✗ scl = step * (nb_wrap_colors - 1);
132 ✗ i = floorf(scl);
133 ✗ j = i + 1;
134 ✗ if (i >= nb_colors - 1) {
135 ✗ i = nb_colors - 1;
136 ✗ j = 0;
137 }
138
139 ✗ return lerp_color(arr[i], arr[j], scl - i);
140 }
141
142 ✗ static uint64_t lerp_colors16(uint8_t arr[8][4], int nb_colors, int nb_wrap_colors, float step)
143 {
144 float scl;
145 int i, j;
146
147 ✗ if (nb_colors == 1 || step <= 0.0) {
148 ✗ return ((uint64_t)arr[0][0] << 8) | ((uint64_t)arr[0][1] << 24) | ((uint64_t)arr[0][2] << 40) | ((uint64_t)arr[0][3] << 56);
149 ✗ } else if (step >= 1.0) {
150 ✗ i = nb_colors - 1;
151 ✗ return ((uint64_t)arr[i][0] << 8) | ((uint64_t)arr[i][1] << 24) | ((uint64_t)arr[i][2] << 40) | ((uint64_t)arr[i][3] << 56);
152 }
153
154 ✗ scl = step * (nb_wrap_colors - 1);
155 ✗ i = floorf(scl);
156 ✗ j = i + 1;
157 ✗ if (i >= nb_colors - 1) {
158 ✗ i = nb_colors - 1;
159 ✗ j = 0;
160 }
161
162 ✗ return lerp_color16(arr[i], arr[j], scl - i);
163 }
164
165 ✗ static void lerp_colors32(float arr[8][4], int nb_colors,
166 int nb_wrap_colors, float step,
167 float *r, float *g, float *b, float *a)
168 {
169 float scl, x;
170 int i, j;
171
172 ✗ if (nb_colors == 1 || step <= 0.0) {
173 ✗ *r = arr[0][0];
174 ✗ *g = arr[0][1];
175 ✗ *b = arr[0][2];
176 ✗ *a = arr[0][3];
177 ✗ return;
178 ✗ } else if (step >= 1.0) {
179 ✗ i = nb_colors - 1;
180 ✗ *r = arr[i][0];
181 ✗ *g = arr[i][1];
182 ✗ *b = arr[i][2];
183 ✗ *a = arr[i][3];
184 ✗ return;
185 }
186
187 ✗ scl = step * (nb_wrap_colors - 1);
188 ✗ i = floorf(scl);
189 ✗ j = i + 1;
190 ✗ if (i >= nb_colors - 1) {
191 ✗ i = nb_colors - 1;
192 ✗ j = 0;
193 }
194 ✗ x = scl - i;
195
196 ✗ *r = lerpf(arr[i][0], arr[j][0], x);
197 ✗ *g = lerpf(arr[i][1], arr[j][1], x);
198 ✗ *b = lerpf(arr[i][2], arr[j][2], x);
199 ✗ *a = lerpf(arr[i][3], arr[j][3], x);
200 }
201
202 ✗ static float project(float origin_x, float origin_y,
203 float dest_x, float dest_y,
204 float point_x, float point_y, int type)
205 {
206 ✗ float op_x = point_x - origin_x;
207 ✗ float op_y = point_y - origin_y;
208 ✗ float od_x = dest_x - origin_x;
209 ✗ float od_y = dest_y - origin_y;
210 float op_x_od;
211 float od_s_q;
212
213 ✗ switch (type) {
214 ✗ case 0:
215 ✗ od_s_q = od_x * od_x + od_y * od_y;
216 ✗ break;
217 ✗ case 1:
218 ✗ od_s_q = sqrtf(od_x * od_x + od_y * od_y);
219 ✗ break;
220 ✗ case 2:
221 case 3:
222 ✗ od_s_q = M_PI * 2.f;
223 ✗ break;
224 ✗ case 4:
225 ✗ od_s_q = fmaxf(fabsf(od_x), fabsf(od_y));
226 ✗ break;
227 }
228
229 ✗ switch (type) {
230 ✗ case 0:
231 ✗ op_x_od = op_x * od_x + op_y * od_y;
232 ✗ break;
233 ✗ case 1:
234 ✗ op_x_od = sqrtf(op_x * op_x + op_y * op_y);
235 ✗ break;
236 ✗ case 2:
237 ✗ op_x_od = atan2f(op_x, op_y) + M_PI;
238 ✗ break;
239 ✗ case 3:
240 ✗ op_x_od = fmodf(atan2f(op_x, op_y) + M_PI + point_x / fmaxf(origin_x, dest_x), 2.f * M_PI);
241 ✗ break;
242 ✗ case 4:
243 ✗ op_x_od = fmaxf(fabsf(op_x), fabsf(op_y));
244 ✗ break;
245 }
246
247 // Normalize and clamp range.
248 ✗ return av_clipf(op_x_od / od_s_q, 0.f, 1.f);
249 }
250
251 ✗ static int draw_gradients_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
252 {
253 ✗ GradientsContext *s = ctx->priv;
254 ✗ AVFrame *frame = arg;
255 ✗ const int width = frame->width;
256 ✗ const int height = frame->height;
257 ✗ const int start = (height * job ) / nb_jobs;
258 ✗ const int end = (height * (job+1)) / nb_jobs;
259 ✗ const ptrdiff_t linesize = frame->linesize[0] / 4;
260 ✗ uint32_t *dst = (uint32_t *)frame->data[0] + start * linesize;
261 ✗ const int type = s->type;
262
263 ✗ for (int y = start; y < end; y++) {
264 ✗ for (int x = 0; x < width; x++) {
265 ✗ float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, type);
266 ✗ dst[x] = lerp_colors(s->color_rgba, s->nb_colors, s->nb_colors + (type >= 2 && type <= 3), factor);
267 }
268
269 ✗ dst += linesize;
270 }
271
272 ✗ return 0;
273 }
274
275 ✗ static int draw_gradients_slice16(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
276 {
277 ✗ GradientsContext *s = ctx->priv;
278 ✗ AVFrame *frame = arg;
279 ✗ const int width = frame->width;
280 ✗ const int height = frame->height;
281 ✗ const int start = (height * job ) / nb_jobs;
282 ✗ const int end = (height * (job+1)) / nb_jobs;
283 ✗ const ptrdiff_t linesize = frame->linesize[0] / 8;
284 ✗ uint64_t *dst = (uint64_t *)frame->data[0] + start * linesize;
285 ✗ const int type = s->type;
286
287 ✗ for (int y = start; y < end; y++) {
288 ✗ for (int x = 0; x < width; x++) {
289 ✗ float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, type);
290 ✗ dst[x] = lerp_colors16(s->color_rgba, s->nb_colors, s->nb_colors + (type >= 2 && type <= 3), factor);
291 }
292
293 ✗ dst += linesize;
294 }
295
296 ✗ return 0;
297 }
298
299 ✗ static int draw_gradients_slice32_planar(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
300 {
301 ✗ GradientsContext *s = ctx->priv;
302 ✗ AVFrame *frame = arg;
303 ✗ const int width = frame->width;
304 ✗ const int height = frame->height;
305 ✗ const int start = (height * job ) / nb_jobs;
306 ✗ const int end = (height * (job+1)) / nb_jobs;
307 ✗ const ptrdiff_t linesize_g = frame->linesize[0] / 4;
308 ✗ const ptrdiff_t linesize_b = frame->linesize[1] / 4;
309 ✗ const ptrdiff_t linesize_r = frame->linesize[2] / 4;
310 ✗ const ptrdiff_t linesize_a = frame->linesize[3] / 4;
311 ✗ float *dst_g = (float *)frame->data[0] + start * linesize_g;
312 ✗ float *dst_b = (float *)frame->data[1] + start * linesize_b;
313 ✗ float *dst_r = (float *)frame->data[2] + start * linesize_r;
314 ✗ float *dst_a = (float *)frame->data[3] + start * linesize_a;
315 ✗ const int type = s->type;
316
317 ✗ for (int y = start; y < end; y++) {
318 ✗ for (int x = 0; x < width; x++) {
319 ✗ float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, type);
320 ✗ lerp_colors32(s->color_rgbaf, s->nb_colors, s->nb_colors + (type >= 2 && type <= 3), factor,
321 ✗ &dst_r[x], &dst_g[x], &dst_b[x], &dst_a[x]);
322 }
323
324 ✗ dst_g += linesize_g;
325 ✗ dst_b += linesize_b;
326 ✗ dst_r += linesize_r;
327 ✗ dst_a += linesize_a;
328 }
329
330 ✗ return 0;
331 }
332
333 ✗ static int config_output(AVFilterLink *outlink)
334 {
335 ✗ AVFilterContext *ctx = outlink->src;
336 ✗ FilterLink *l = ff_filter_link(outlink);
337 ✗ GradientsContext *s = ctx->priv;
338 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
339
340 ✗ if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
341 ✗ return AVERROR(EINVAL);
342
343 ✗ outlink->w = s->w;
344 ✗ outlink->h = s->h;
345 ✗ outlink->time_base = av_inv_q(s->frame_rate);
346 ✗ outlink->sample_aspect_ratio = (AVRational) {1, 1};
347 ✗ l->frame_rate = s->frame_rate;
348 ✗ if (s->seed == -1)
349 ✗ s->seed = av_get_random_seed();
350 ✗ av_lfg_init(&s->lfg, s->seed);
351
352 ✗ switch (desc->comp[0].depth) {
353 ✗ case 8:
354 ✗ s->draw_slice = draw_gradients_slice;
355 ✗ break;
356 ✗ case 16:
357 ✗ s->draw_slice = draw_gradients_slice16;
358 ✗ break;
359 ✗ case 32:
360 ✗ s->draw_slice = draw_gradients_slice32_planar;
361 ✗ break;
362 ✗ default:
363 ✗ return AVERROR_BUG;
364 }
365
366 ✗ if (s->x0 < 0 || s->x0 >= s->w)
367 ✗ s->x0 = av_lfg_get(&s->lfg) % s->w;
368 ✗ if (s->y0 < 0 || s->y0 >= s->h)
369 ✗ s->y0 = av_lfg_get(&s->lfg) % s->h;
370 ✗ if (s->x1 < 0 || s->x1 >= s->w)
371 ✗ s->x1 = av_lfg_get(&s->lfg) % s->w;
372 ✗ if (s->y1 < 0 || s->y1 >= s->h)
373 ✗ s->y1 = av_lfg_get(&s->lfg) % s->h;
374
375 ✗ for (int n = 0; n < 8; n++) {
376 ✗ for (int c = 0; c < 4; c++)
377 ✗ s->color_rgbaf[n][c] = s->color_rgba[n][c] / 255.f;
378 }
379
380 ✗ return 0;
381 }
382
383 ✗ static int activate(AVFilterContext *ctx)
384 {
385 ✗ GradientsContext *s = ctx->priv;
386 ✗ AVFilterLink *outlink = ctx->outputs[0];
387
388 ✗ if (s->duration >= 0 &&
389 ✗ av_rescale_q(s->pts, outlink->time_base, AV_TIME_BASE_Q) >= s->duration) {
390 ✗ ff_outlink_set_status(outlink, AVERROR_EOF, s->pts);
391 ✗ return 0;
392 }
393
394 ✗ if (ff_outlink_frame_wanted(outlink)) {
395 ✗ AVFrame *frame = ff_get_video_buffer(outlink, s->w, s->h);
396 ✗ float angle = fmodf(s->angle, 2.f * M_PI);
397 ✗ const float w2 = s->w / 2.f;
398 ✗ const float h2 = s->h / 2.f;
399
400 ✗ s->angle = angle + s->speed;
401
402 ✗ s->fx0 = (s->x0 - w2) * cosf(angle) - (s->y0 - h2) * sinf(angle) + w2;
403 ✗ s->fy0 = (s->x0 - w2) * sinf(angle) + (s->y0 - h2) * cosf(angle) + h2;
404
405 ✗ s->fx1 = (s->x1 - w2) * cosf(angle) - (s->y1 - h2) * sinf(angle) + w2;
406 ✗ s->fy1 = (s->x1 - w2) * sinf(angle) + (s->y1 - h2) * cosf(angle) + h2;
407
408 ✗ if (!frame)
409 ✗ return AVERROR(ENOMEM);
410
411 #if FF_API_FRAME_KEY
412 FF_DISABLE_DEPRECATION_WARNINGS
413 ✗ frame->key_frame = 1;
414 FF_ENABLE_DEPRECATION_WARNINGS
415 #endif
416
417 ✗ frame->flags |= AV_FRAME_FLAG_KEY;
418 #if FF_API_INTERLACED_FRAME
419 FF_DISABLE_DEPRECATION_WARNINGS
420 ✗ frame->interlaced_frame = 0;
421 FF_ENABLE_DEPRECATION_WARNINGS
422 #endif
423 ✗ frame->flags &= ~AV_FRAME_FLAG_INTERLACED;
424 ✗ frame->pict_type = AV_PICTURE_TYPE_I;
425 ✗ frame->sample_aspect_ratio = (AVRational) {1, 1};
426 ✗ frame->pts = s->pts++;
427 ✗ frame->duration = 1;
428
429 ✗ ff_filter_execute(ctx, s->draw_slice, frame, NULL,
430 ✗ FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
431
432 ✗ return ff_filter_frame(outlink, frame);
433 }
434
435 ✗ return FFERROR_NOT_READY;
436 }
437
438 static const AVFilterPad gradients_outputs[] = {
439 {
440 .name = "default",
441 .type = AVMEDIA_TYPE_VIDEO,
442 .config_props = config_output,
443 },
444 };
445
446 const AVFilter ff_vsrc_gradients = {
447 .name = "gradients",
448 .description = NULL_IF_CONFIG_SMALL("Draw a gradients."),
449 .priv_size = sizeof(GradientsContext),
450 .priv_class = &gradients_class,
451 .inputs = NULL,
452 FILTER_OUTPUTS(gradients_outputs),
453 FILTER_PIXFMTS(AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64, AV_PIX_FMT_GBRAPF32),
454 .activate = activate,
455 .flags = AVFILTER_FLAG_SLICE_THREADS,
456 .process_command = ff_filter_process_command,
457 };
458