be3bea1e0f0e07482387729053255392fdebd7b8
[libav.git] / libavfilter / vsrc_testsrc.c
1 /*
2 * Copyright (c) 2007 Nicolas George <nicolas.george@normalesup.org>
3 * Copyright (c) 2011 Stefano Sabatini
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Misc test sources.
25 *
26 * testsrc is based on the test pattern generator demuxer by Nicolas George:
27 * http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2007-October/037845.html
28 *
29 * rgbtestsrc is ported from MPlayer libmpcodecs/vf_rgbtest.c by
30 * Michael Niedermayer.
31 */
32
33 #include <float.h>
34
35 #include "libavutil/mathematics.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/parseutils.h"
39 #include "avfilter.h"
40
41 typedef struct {
42 const AVClass *class;
43 int h, w;
44 unsigned int nb_frame;
45 AVRational time_base;
46 int64_t pts, max_pts;
47 char *size; ///< video frame size
48 char *rate; ///< video frame rate
49 char *duration; ///< total duration of the generated video
50 AVRational sar; ///< sample aspect ratio
51
52 void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
53
54 /* only used by rgbtest */
55 int rgba_map[4];
56 } TestSourceContext;
57
58 #define OFFSET(x) offsetof(TestSourceContext, x)
59
60 static const AVOption testsrc_options[] = {
61 { "size", "set video size", OFFSET(size), FF_OPT_TYPE_STRING, {.str = "320x240"}},
62 { "s", "set video size", OFFSET(size), FF_OPT_TYPE_STRING, {.str = "320x240"}},
63 { "rate", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, },
64 { "r", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, },
65 { "duration", "set video duration", OFFSET(duration), FF_OPT_TYPE_STRING, {.str = NULL}, },
66 { "sar", "set video sample aspect ratio", OFFSET(sar), FF_OPT_TYPE_RATIONAL, {1}, 0, INT_MAX },
67 { NULL },
68 };
69
70 static av_cold int init_common(AVFilterContext *ctx, const char *args, void *opaque)
71 {
72 TestSourceContext *test = ctx->priv;
73 AVRational frame_rate_q;
74 int64_t duration = -1;
75 int ret = 0;
76
77 av_opt_set_defaults(test);
78
79 if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0) {
80 av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
81 return ret;
82 }
83
84 if ((ret = av_parse_video_size(&test->w, &test->h, test->size)) < 0) {
85 av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", test->size);
86 return ret;
87 }
88
89 if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
90 frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
91 av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
92 return ret;
93 }
94
95 if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
96 av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
97 return ret;
98 }
99
100 test->time_base.num = frame_rate_q.den;
101 test->time_base.den = frame_rate_q.num;
102 test->max_pts = duration >= 0 ?
103 av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
104 test->nb_frame = 0;
105 test->pts = 0;
106
107 av_log(ctx, AV_LOG_DEBUG, "size:%dx%d rate:%d/%d duration:%f sar:%d/%d\n",
108 test->w, test->h, frame_rate_q.num, frame_rate_q.den,
109 duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base),
110 test->sar.num, test->sar.den);
111 return 0;
112 }
113
114 static int config_props(AVFilterLink *outlink)
115 {
116 TestSourceContext *test = outlink->src->priv;
117
118 outlink->w = test->w;
119 outlink->h = test->h;
120 outlink->sample_aspect_ratio = test->sar;
121 outlink->time_base = test->time_base;
122
123 return 0;
124 }
125
126 static int request_frame(AVFilterLink *outlink)
127 {
128 TestSourceContext *test = outlink->src->priv;
129 AVFilterBufferRef *picref;
130
131 if (test->max_pts >= 0 && test->pts > test->max_pts)
132 return AVERROR_EOF;
133 picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
134 test->w, test->h);
135 picref->pts = test->pts++;
136 picref->pos = -1;
137 picref->video->key_frame = 1;
138 picref->video->interlaced = 0;
139 picref->video->pict_type = AV_PICTURE_TYPE_I;
140 picref->video->pixel_aspect = test->sar;
141 test->nb_frame++;
142 test->fill_picture_fn(outlink->src, picref);
143
144 avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
145 avfilter_draw_slice(outlink, 0, picref->video->h, 1);
146 avfilter_end_frame(outlink);
147 avfilter_unref_buffer(picref);
148
149 return 0;
150 }
151
152 #if CONFIG_TESTSRC_FILTER
153
154 static const char *testsrc_get_name(void *ctx)
155 {
156 return "testsrc";
157 }
158
159 static const AVClass testsrc_class = {
160 .class_name = "TestSourceContext",
161 .item_name = testsrc_get_name,
162 .option = testsrc_options,
163 };
164
165 /**
166 * Fill a rectangle with value val.
167 *
168 * @param val the RGB value to set
169 * @param dst pointer to the destination buffer to fill
170 * @param dst_linesize linesize of destination
171 * @param segment_width width of the segment
172 * @param x horizontal coordinate where to draw the rectangle in the destination buffer
173 * @param y horizontal coordinate where to draw the rectangle in the destination buffer
174 * @param w width of the rectangle to draw, expressed as a number of segment_width units
175 * @param h height of the rectangle to draw, expressed as a number of segment_width units
176 */
177 static void draw_rectangle(unsigned val, uint8_t *dst, int dst_linesize, unsigned segment_width,
178 unsigned x, unsigned y, unsigned w, unsigned h)
179 {
180 int i;
181 int step = 3;
182
183 dst += segment_width * (step * x + y * dst_linesize);
184 w *= segment_width * step;
185 h *= segment_width;
186 for (i = 0; i < h; i++) {
187 memset(dst, val, w);
188 dst += dst_linesize;
189 }
190 }
191
192 static void draw_digit(int digit, uint8_t *dst, unsigned dst_linesize,
193 unsigned segment_width)
194 {
195 #define TOP_HBAR 1
196 #define MID_HBAR 2
197 #define BOT_HBAR 4
198 #define LEFT_TOP_VBAR 8
199 #define LEFT_BOT_VBAR 16
200 #define RIGHT_TOP_VBAR 32
201 #define RIGHT_BOT_VBAR 64
202 struct {
203 int x, y, w, h;
204 } segments[] = {
205 { 1, 0, 5, 1 }, /* TOP_HBAR */
206 { 1, 6, 5, 1 }, /* MID_HBAR */
207 { 1, 12, 5, 1 }, /* BOT_HBAR */
208 { 0, 1, 1, 5 }, /* LEFT_TOP_VBAR */
209 { 0, 7, 1, 5 }, /* LEFT_BOT_VBAR */
210 { 6, 1, 1, 5 }, /* RIGHT_TOP_VBAR */
211 { 6, 7, 1, 5 } /* RIGHT_BOT_VBAR */
212 };
213 static const unsigned char masks[10] = {
214 /* 0 */ TOP_HBAR |BOT_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
215 /* 1 */ RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
216 /* 2 */ TOP_HBAR|MID_HBAR|BOT_HBAR|LEFT_BOT_VBAR |RIGHT_TOP_VBAR,
217 /* 3 */ TOP_HBAR|MID_HBAR|BOT_HBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
218 /* 4 */ MID_HBAR |LEFT_TOP_VBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
219 /* 5 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR |RIGHT_BOT_VBAR,
220 /* 6 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR |RIGHT_BOT_VBAR,
221 /* 7 */ TOP_HBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
222 /* 8 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
223 /* 9 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
224 };
225 unsigned mask = masks[digit];
226 int i;
227
228 draw_rectangle(0, dst, dst_linesize, segment_width, 0, 0, 8, 13);
229 for (i = 0; i < FF_ARRAY_ELEMS(segments); i++)
230 if (mask & (1<<i))
231 draw_rectangle(255, dst, dst_linesize, segment_width,
232 segments[i].x, segments[i].y, segments[i].w, segments[i].h);
233 }
234
235 #define GRADIENT_SIZE (6 * 256)
236
237 static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
238 {
239 TestSourceContext *test = ctx->priv;
240 uint8_t *p, *p0;
241 int x, y;
242 int color, color_rest;
243 int icolor;
244 int radius;
245 int quad0, quad;
246 int dquad_x, dquad_y;
247 int grad, dgrad, rgrad, drgrad;
248 int seg_size;
249 int second;
250 int i;
251 uint8_t *data = picref->data[0];
252 int width = picref->video->w;
253 int height = picref->video->h;
254
255 /* draw colored bars and circle */
256 radius = (width + height) / 4;
257 quad0 = width * width / 4 + height * height / 4 - radius * radius;
258 dquad_y = 1 - height;
259 p0 = data;
260 for (y = 0; y < height; y++) {
261 p = p0;
262 color = 0;
263 color_rest = 0;
264 quad = quad0;
265 dquad_x = 1 - width;
266 for (x = 0; x < width; x++) {
267 icolor = color;
268 if (quad < 0)
269 icolor ^= 7;
270 quad += dquad_x;
271 dquad_x += 2;
272 *(p++) = icolor & 1 ? 255 : 0;
273 *(p++) = icolor & 2 ? 255 : 0;
274 *(p++) = icolor & 4 ? 255 : 0;
275 color_rest += 8;
276 if (color_rest >= width) {
277 color_rest -= width;
278 color++;
279 }
280 }
281 quad0 += dquad_y;
282 dquad_y += 2;
283 p0 += picref->linesize[0];
284 }
285
286 /* draw sliding color line */
287 p = data + picref->linesize[0] * height * 3/4;
288 grad = (256 * test->nb_frame * test->time_base.num / test->time_base.den) %
289 GRADIENT_SIZE;
290 rgrad = 0;
291 dgrad = GRADIENT_SIZE / width;
292 drgrad = GRADIENT_SIZE % width;
293 for (x = 0; x < width; x++) {
294 *(p++) =
295 grad < 256 || grad >= 5 * 256 ? 255 :
296 grad >= 2 * 256 && grad < 4 * 256 ? 0 :
297 grad < 2 * 256 ? 2 * 256 - 1 - grad : grad - 4 * 256;
298 *(p++) =
299 grad >= 4 * 256 ? 0 :
300 grad >= 1 * 256 && grad < 3 * 256 ? 255 :
301 grad < 1 * 256 ? grad : 4 * 256 - 1 - grad;
302 *(p++) =
303 grad < 2 * 256 ? 0 :
304 grad >= 3 * 256 && grad < 5 * 256 ? 255 :
305 grad < 3 * 256 ? grad - 2 * 256 : 6 * 256 - 1 - grad;
306 grad += dgrad;
307 rgrad += drgrad;
308 if (rgrad >= GRADIENT_SIZE) {
309 grad++;
310 rgrad -= GRADIENT_SIZE;
311 }
312 if (grad >= GRADIENT_SIZE)
313 grad -= GRADIENT_SIZE;
314 }
315 for (y = height / 8; y > 0; y--) {
316 memcpy(p, p - picref->linesize[0], 3 * width);
317 p += picref->linesize[0];
318 }
319
320 /* draw digits */
321 seg_size = width / 80;
322 if (seg_size >= 1 && height >= 13 * seg_size) {
323 second = test->nb_frame * test->time_base.num / test->time_base.den;
324 x = width - (width - seg_size * 64) / 2;
325 y = (height - seg_size * 13) / 2;
326 p = data + (x*3 + y * picref->linesize[0]);
327 for (i = 0; i < 8; i++) {
328 p -= 3 * 8 * seg_size;
329 draw_digit(second % 10, p, picref->linesize[0], seg_size);
330 second /= 10;
331 if (second == 0)
332 break;
333 }
334 }
335 }
336
337 static av_cold int test_init(AVFilterContext *ctx, const char *args, void *opaque)
338 {
339 TestSourceContext *test = ctx->priv;
340
341 test->class = &testsrc_class;
342 test->fill_picture_fn = test_fill_picture;
343 return init_common(ctx, args, opaque);
344 }
345
346 static int test_query_formats(AVFilterContext *ctx)
347 {
348 static const enum PixelFormat pix_fmts[] = {
349 PIX_FMT_RGB24, PIX_FMT_NONE
350 };
351 avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
352 return 0;
353 }
354
355 AVFilter avfilter_vsrc_testsrc = {
356 .name = "testsrc",
357 .description = NULL_IF_CONFIG_SMALL("Generate test pattern."),
358 .priv_size = sizeof(TestSourceContext),
359 .init = test_init,
360
361 .query_formats = test_query_formats,
362
363 .inputs = (AVFilterPad[]) {{ .name = NULL}},
364
365 .outputs = (AVFilterPad[]) {{ .name = "default",
366 .type = AVMEDIA_TYPE_VIDEO,
367 .request_frame = request_frame,
368 .config_props = config_props, },
369 { .name = NULL }},
370 };
371
372 #endif /* CONFIG_TESTSRC_FILTER */
373
374 #if CONFIG_RGBTESTSRC_FILTER
375
376 static const char *rgbtestsrc_get_name(void *ctx)
377 {
378 return "rgbtestsrc";
379 }
380
381 static const AVClass rgbtestsrc_class = {
382 .class_name = "RGBTestSourceContext",
383 .item_name = rgbtestsrc_get_name,
384 .option = testsrc_options,
385 };
386
387 #define R 0
388 #define G 1
389 #define B 2
390 #define A 3
391
392 static void rgbtest_put_pixel(uint8_t *dst, int dst_linesize,
393 int x, int y, int r, int g, int b, enum PixelFormat fmt,
394 int rgba_map[4])
395 {
396 int32_t v;
397 uint8_t *p;
398
399 switch (fmt) {
400 case PIX_FMT_BGR444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r >> 4) << 8) | ((g >> 4) << 4) | (b >> 4); break;
401 case PIX_FMT_RGB444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b >> 4) << 8) | ((g >> 4) << 4) | (r >> 4); break;
402 case PIX_FMT_BGR555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<10) | ((g>>3)<<5) | (b>>3); break;
403 case PIX_FMT_RGB555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<10) | ((g>>3)<<5) | (r>>3); break;
404 case PIX_FMT_BGR565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<11) | ((g>>2)<<5) | (b>>3); break;
405 case PIX_FMT_RGB565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<11) | ((g>>2)<<5) | (r>>3); break;
406 case PIX_FMT_RGB24:
407 case PIX_FMT_BGR24:
408 v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
409 p = dst + 3*x + y*dst_linesize;
410 AV_WL24(p, v);
411 break;
412 case PIX_FMT_RGBA:
413 case PIX_FMT_BGRA:
414 case PIX_FMT_ARGB:
415 case PIX_FMT_ABGR:
416 v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
417 p = dst + 4*x + y*dst_linesize;
418 AV_WL32(p, v);
419 break;
420 }
421 }
422
423 static void rgbtest_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
424 {
425 TestSourceContext *test = ctx->priv;
426 int x, y, w = picref->video->w, h = picref->video->h;
427
428 for (y = 0; y < h; y++) {
429 for (x = 0; x < picref->video->w; x++) {
430 int c = 256*x/w;
431 int r = 0, g = 0, b = 0;
432
433 if (3*y < h ) r = c;
434 else if (3*y < 2*h) g = c;
435 else b = c;
436
437 rgbtest_put_pixel(picref->data[0], picref->linesize[0], x, y, r, g, b,
438 ctx->outputs[0]->format, test->rgba_map);
439 }
440 }
441 }
442
443 static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args, void *opaque)
444 {
445 TestSourceContext *test = ctx->priv;
446
447 test->class = &rgbtestsrc_class;
448 test->fill_picture_fn = rgbtest_fill_picture;
449 return init_common(ctx, args, opaque);
450 }
451
452 static int rgbtest_query_formats(AVFilterContext *ctx)
453 {
454 static const enum PixelFormat pix_fmts[] = {
455 PIX_FMT_RGBA, PIX_FMT_ARGB, PIX_FMT_BGRA, PIX_FMT_ABGR,
456 PIX_FMT_BGR24, PIX_FMT_RGB24,
457 PIX_FMT_RGB444, PIX_FMT_BGR444,
458 PIX_FMT_RGB565, PIX_FMT_BGR565,
459 PIX_FMT_RGB555, PIX_FMT_BGR555,
460 PIX_FMT_NONE
461 };
462 avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
463 return 0;
464 }
465
466 static int rgbtest_config_props(AVFilterLink *outlink)
467 {
468 TestSourceContext *test = outlink->src->priv;
469
470 switch (outlink->format) {
471 case PIX_FMT_ARGB: test->rgba_map[A] = 0; test->rgba_map[R] = 1; test->rgba_map[G] = 2; test->rgba_map[B] = 3; break;
472 case PIX_FMT_ABGR: test->rgba_map[A] = 0; test->rgba_map[B] = 1; test->rgba_map[G] = 2; test->rgba_map[R] = 3; break;
473 case PIX_FMT_RGBA:
474 case PIX_FMT_RGB24: test->rgba_map[R] = 0; test->rgba_map[G] = 1; test->rgba_map[B] = 2; test->rgba_map[A] = 3; break;
475 case PIX_FMT_BGRA:
476 case PIX_FMT_BGR24: test->rgba_map[B] = 0; test->rgba_map[G] = 1; test->rgba_map[R] = 2; test->rgba_map[A] = 3; break;
477 }
478
479 return config_props(outlink);
480 }
481
482 AVFilter avfilter_vsrc_rgbtestsrc = {
483 .name = "rgbtestsrc",
484 .description = NULL_IF_CONFIG_SMALL("Generate RGB test pattern."),
485 .priv_size = sizeof(TestSourceContext),
486 .init = rgbtest_init,
487
488 .query_formats = rgbtest_query_formats,
489
490 .inputs = (AVFilterPad[]) {{ .name = NULL}},
491
492 .outputs = (AVFilterPad[]) {{ .name = "default",
493 .type = AVMEDIA_TYPE_VIDEO,
494 .request_frame = request_frame,
495 .config_props = rgbtest_config_props, },
496 { .name = NULL }},
497 };
498
499 #endif /* CONFIG_RGBTESTSRC_FILTER */