FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vsrc_testsrc.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2007 Nicolas George <nicolas.george@normalesup.org>
3  * Copyright (c) 2011 Stefano Sabatini
4  * Copyright (c) 2012 Paul B Mahol
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * Misc test sources.
26  *
27  * testsrc is based on the test pattern generator demuxer by Nicolas George:
28  * http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2007-October/037845.html
29  *
30  * rgbtestsrc is ported from MPlayer libmpcodecs/vf_rgbtest.c by
31  * Michael Niedermayer.
32  *
33  * smptebars is by Paul B Mahol.
34  */
35 
36 #include <float.h>
37 
38 #include "libavutil/common.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/parseutils.h"
43 #include "avfilter.h"
44 #include "drawutils.h"
45 #include "formats.h"
46 #include "internal.h"
47 #include "video.h"
48 
49 typedef struct {
50  const AVClass *class;
51  int w, h;
52  unsigned int nb_frame;
53  AVRational time_base, frame_rate;
54  int64_t pts;
55  char *frame_rate_str; ///< video frame rate
56  char *duration_str; ///< total duration of the generated video
57  int64_t duration; ///< duration expressed in microseconds
58  AVRational sar; ///< sample aspect ratio
59  int nb_decimals;
60  int draw_once; ///< draw only the first frame, always put out the same picture
61  AVFilterBufferRef *picref; ///< cached reference containing the painted picture
62 
63  void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
64 
65  /* only used by color */
66  char *color_str;
67  FFDrawContext draw;
68  FFDrawColor color;
69  uint8_t color_rgba[4];
70 
71  /* only used by rgbtest */
72  uint8_t rgba_map[4];
73 } TestSourceContext;
74 
75 #define OFFSET(x) offsetof(TestSourceContext, x)
76 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
77 
78 static const AVOption options[] = {
79  { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "320x240"}, 0, 0, FLAGS },
80  { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "320x240"}, 0, 0, FLAGS },
81  { "rate", "set video rate", OFFSET(frame_rate_str), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, FLAGS },
82  { "r", "set video rate", OFFSET(frame_rate_str), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, FLAGS },
83  { "duration", "set video duration", OFFSET(duration_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
84  { "d", "set video duration", OFFSET(duration_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
85  { "sar", "set video sample aspect ratio", OFFSET(sar), AV_OPT_TYPE_RATIONAL, {.dbl= 1}, 0, INT_MAX, FLAGS },
86 
87  /* only used by color */
88  { "color", "set color", OFFSET(color_str), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
89  { "c", "set color", OFFSET(color_str), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS },
90 
91  /* only used by testsrc */
92  { "decimals", "set number of decimals to show", OFFSET(nb_decimals), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX, FLAGS },
93  { "n", "set number of decimals to show", OFFSET(nb_decimals), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX, FLAGS },
94  { NULL },
95 };
96 
97 static av_cold int init(AVFilterContext *ctx, const char *args)
98 {
99  TestSourceContext *test = ctx->priv;
100  int ret = 0;
101 
102  av_opt_set_defaults(test);
103 
104  if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0)
105  return ret;
106 
107  if ((ret = av_parse_video_rate(&test->frame_rate, test->frame_rate_str)) < 0) {
108  av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->frame_rate_str);
109  return ret;
110  }
111 
112  test->duration = -1;
113  if (test->duration_str &&
114  (ret = av_parse_time(&test->duration, test->duration_str, 1)) < 0) {
115  av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration_str);
116  return ret;
117  }
118 
119  if (test->nb_decimals && strcmp(ctx->filter->name, "testsrc")) {
120  av_log(ctx, AV_LOG_WARNING,
121  "Option 'decimals' is ignored with source '%s'\n",
122  ctx->filter->name);
123  }
124 
125  if (test->color_str) {
126  if (!strcmp(ctx->filter->name, "color")) {
127  ret = av_parse_color(test->color_rgba, test->color_str, -1, ctx);
128  if (ret < 0)
129  return ret;
130  } else {
131  av_log(ctx, AV_LOG_WARNING,
132  "Option 'color' is ignored with source '%s'\n",
133  ctx->filter->name);
134  }
135  }
136 
137  test->time_base = av_inv_q(test->frame_rate);
138  test->nb_frame = 0;
139  test->pts = 0;
140 
141  av_log(ctx, AV_LOG_VERBOSE, "size:%dx%d rate:%d/%d duration:%f sar:%d/%d\n",
142  test->w, test->h, test->frame_rate.num, test->frame_rate.den,
143  test->duration < 0 ? -1 : (double)test->duration/1000000,
144  test->sar.num, test->sar.den);
145  return 0;
146 }
147 
148 static av_cold void uninit(AVFilterContext *ctx)
149 {
150  TestSourceContext *test = ctx->priv;
151 
152  av_opt_free(test);
153  avfilter_unref_bufferp(&test->picref);
154 }
155 
156 static int config_props(AVFilterLink *outlink)
157 {
158  TestSourceContext *test = outlink->src->priv;
159 
160  outlink->w = test->w;
161  outlink->h = test->h;
162  outlink->sample_aspect_ratio = test->sar;
163  outlink->frame_rate = test->frame_rate;
164  outlink->time_base = test->time_base;
165 
166  return 0;
167 }
168 
169 static int request_frame(AVFilterLink *outlink)
170 {
171  TestSourceContext *test = outlink->src->priv;
172  AVFilterBufferRef *outpicref;
173 
174  if (test->duration >= 0 &&
175  av_rescale_q(test->pts, test->time_base, AV_TIME_BASE_Q) >= test->duration)
176  return AVERROR_EOF;
177 
178  if (test->draw_once) {
179  if (!test->picref) {
180  test->picref =
181  ff_get_video_buffer(outlink, AV_PERM_WRITE|AV_PERM_PRESERVE|AV_PERM_REUSE,
182  test->w, test->h);
183  if (!test->picref)
184  return AVERROR(ENOMEM);
185  test->fill_picture_fn(outlink->src, test->picref);
186  }
187  outpicref = avfilter_ref_buffer(test->picref, ~AV_PERM_WRITE);
188  } else
189  outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, test->w, test->h);
190 
191  if (!outpicref)
192  return AVERROR(ENOMEM);
193  outpicref->pts = test->pts;
194  outpicref->pos = -1;
195  outpicref->video->key_frame = 1;
196  outpicref->video->interlaced = 0;
197  outpicref->video->pict_type = AV_PICTURE_TYPE_I;
198  outpicref->video->sample_aspect_ratio = test->sar;
199  if (!test->draw_once)
200  test->fill_picture_fn(outlink->src, outpicref);
201 
202  test->pts++;
203  test->nb_frame++;
204 
205  return ff_filter_frame(outlink, outpicref);
206 }
207 
208 #if CONFIG_COLOR_FILTER
209 
210 #define color_options options
211 AVFILTER_DEFINE_CLASS(color);
212 
213 static void color_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
214 {
215  TestSourceContext *test = ctx->priv;
216  ff_fill_rectangle(&test->draw, &test->color,
217  picref->data, picref->linesize,
218  0, 0, test->w, test->h);
219 }
220 
221 static av_cold int color_init(AVFilterContext *ctx, const char *args)
222 {
223  TestSourceContext *test = ctx->priv;
224  test->class = &color_class;
225  test->fill_picture_fn = color_fill_picture;
226  test->draw_once = 1;
227  av_opt_set(test, "color", "black", 0);
228  return init(ctx, args);
229 }
230 
231 static int color_query_formats(AVFilterContext *ctx)
232 {
233  ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
234  return 0;
235 }
236 
237 static int color_config_props(AVFilterLink *inlink)
238 {
239  AVFilterContext *ctx = inlink->src;
240  TestSourceContext *test = ctx->priv;
241  int ret;
242 
243  ff_draw_init(&test->draw, inlink->format, 0);
244  ff_draw_color(&test->draw, &test->color, test->color_rgba);
245 
246  test->w = ff_draw_round_to_sub(&test->draw, 0, -1, test->w);
247  test->h = ff_draw_round_to_sub(&test->draw, 1, -1, test->h);
248  if (av_image_check_size(test->w, test->h, 0, ctx) < 0)
249  return AVERROR(EINVAL);
250 
251  if ((ret = config_props(inlink)) < 0)
252  return ret;
253 
254  av_log(ctx, AV_LOG_VERBOSE, "color:0x%02x%02x%02x%02x\n",
255  test->color_rgba[0], test->color_rgba[1], test->color_rgba[2], test->color_rgba[3]);
256  return 0;
257 }
258 
259 static const AVFilterPad color_outputs[] = {
260  {
261  .name = "default",
262  .type = AVMEDIA_TYPE_VIDEO,
263  .request_frame = request_frame,
264  .config_props = color_config_props,
265  },
266  { NULL }
267 };
268 
269 AVFilter avfilter_vsrc_color = {
270  .name = "color",
271  .description = NULL_IF_CONFIG_SMALL("Provide an uniformly colored input."),
272 
273  .priv_size = sizeof(TestSourceContext),
274  .init = color_init,
275  .uninit = uninit,
276 
277  .query_formats = color_query_formats,
278  .inputs = NULL,
279  .outputs = color_outputs,
280  .priv_class = &color_class,
281 };
282 
283 #endif /* CONFIG_COLOR_FILTER */
284 
285 #if CONFIG_NULLSRC_FILTER
286 
287 #define nullsrc_options options
288 AVFILTER_DEFINE_CLASS(nullsrc);
289 
290 static void nullsrc_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref) { }
291 
292 static av_cold int nullsrc_init(AVFilterContext *ctx, const char *args)
293 {
294  TestSourceContext *test = ctx->priv;
295 
296  test->class = &nullsrc_class;
297  test->fill_picture_fn = nullsrc_fill_picture;
298  return init(ctx, args);
299 }
300 
301 static const AVFilterPad nullsrc_outputs[] = {
302  {
303  .name = "default",
304  .type = AVMEDIA_TYPE_VIDEO,
305  .request_frame = request_frame,
306  .config_props = config_props,
307  },
308  { NULL },
309 };
310 
311 AVFilter avfilter_vsrc_nullsrc = {
312  .name = "nullsrc",
313  .description = NULL_IF_CONFIG_SMALL("Null video source, return unprocessed video frames."),
314  .init = nullsrc_init,
315  .uninit = uninit,
316  .priv_size = sizeof(TestSourceContext),
317  .inputs = NULL,
318  .outputs = nullsrc_outputs,
319  .priv_class = &nullsrc_class,
320 };
321 
322 #endif /* CONFIG_NULLSRC_FILTER */
323 
324 #if CONFIG_TESTSRC_FILTER
325 
326 #define testsrc_options options
327 AVFILTER_DEFINE_CLASS(testsrc);
328 
329 /**
330  * Fill a rectangle with value val.
331  *
332  * @param val the RGB value to set
333  * @param dst pointer to the destination buffer to fill
334  * @param dst_linesize linesize of destination
335  * @param segment_width width of the segment
336  * @param x horizontal coordinate where to draw the rectangle in the destination buffer
337  * @param y horizontal coordinate where to draw the rectangle in the destination buffer
338  * @param w width of the rectangle to draw, expressed as a number of segment_width units
339  * @param h height of the rectangle to draw, expressed as a number of segment_width units
340  */
341 static void draw_rectangle(unsigned val, uint8_t *dst, int dst_linesize, unsigned segment_width,
342  unsigned x, unsigned y, unsigned w, unsigned h)
343 {
344  int i;
345  int step = 3;
346 
347  dst += segment_width * (step * x + y * dst_linesize);
348  w *= segment_width * step;
349  h *= segment_width;
350  for (i = 0; i < h; i++) {
351  memset(dst, val, w);
352  dst += dst_linesize;
353  }
354 }
355 
356 static void draw_digit(int digit, uint8_t *dst, unsigned dst_linesize,
357  unsigned segment_width)
358 {
359 #define TOP_HBAR 1
360 #define MID_HBAR 2
361 #define BOT_HBAR 4
362 #define LEFT_TOP_VBAR 8
363 #define LEFT_BOT_VBAR 16
364 #define RIGHT_TOP_VBAR 32
365 #define RIGHT_BOT_VBAR 64
366  struct {
367  int x, y, w, h;
368  } segments[] = {
369  { 1, 0, 5, 1 }, /* TOP_HBAR */
370  { 1, 6, 5, 1 }, /* MID_HBAR */
371  { 1, 12, 5, 1 }, /* BOT_HBAR */
372  { 0, 1, 1, 5 }, /* LEFT_TOP_VBAR */
373  { 0, 7, 1, 5 }, /* LEFT_BOT_VBAR */
374  { 6, 1, 1, 5 }, /* RIGHT_TOP_VBAR */
375  { 6, 7, 1, 5 } /* RIGHT_BOT_VBAR */
376  };
377  static const unsigned char masks[10] = {
378  /* 0 */ TOP_HBAR |BOT_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
379  /* 1 */ RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
380  /* 2 */ TOP_HBAR|MID_HBAR|BOT_HBAR|LEFT_BOT_VBAR |RIGHT_TOP_VBAR,
381  /* 3 */ TOP_HBAR|MID_HBAR|BOT_HBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
382  /* 4 */ MID_HBAR |LEFT_TOP_VBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
383  /* 5 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR |RIGHT_BOT_VBAR,
384  /* 6 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR |RIGHT_BOT_VBAR,
385  /* 7 */ TOP_HBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
386  /* 8 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
387  /* 9 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
388  };
389  unsigned mask = masks[digit];
390  int i;
391 
392  draw_rectangle(0, dst, dst_linesize, segment_width, 0, 0, 8, 13);
393  for (i = 0; i < FF_ARRAY_ELEMS(segments); i++)
394  if (mask & (1<<i))
395  draw_rectangle(255, dst, dst_linesize, segment_width,
396  segments[i].x, segments[i].y, segments[i].w, segments[i].h);
397 }
398 
399 #define GRADIENT_SIZE (6 * 256)
400 
401 static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
402 {
403  TestSourceContext *test = ctx->priv;
404  uint8_t *p, *p0;
405  int x, y;
406  int color, color_rest;
407  int icolor;
408  int radius;
409  int quad0, quad;
410  int dquad_x, dquad_y;
411  int grad, dgrad, rgrad, drgrad;
412  int seg_size;
413  int second;
414  int i;
415  uint8_t *data = picref->data[0];
416  int width = picref->video->w;
417  int height = picref->video->h;
418 
419  /* draw colored bars and circle */
420  radius = (width + height) / 4;
421  quad0 = width * width / 4 + height * height / 4 - radius * radius;
422  dquad_y = 1 - height;
423  p0 = data;
424  for (y = 0; y < height; y++) {
425  p = p0;
426  color = 0;
427  color_rest = 0;
428  quad = quad0;
429  dquad_x = 1 - width;
430  for (x = 0; x < width; x++) {
431  icolor = color;
432  if (quad < 0)
433  icolor ^= 7;
434  quad += dquad_x;
435  dquad_x += 2;
436  *(p++) = icolor & 1 ? 255 : 0;
437  *(p++) = icolor & 2 ? 255 : 0;
438  *(p++) = icolor & 4 ? 255 : 0;
439  color_rest += 8;
440  if (color_rest >= width) {
441  color_rest -= width;
442  color++;
443  }
444  }
445  quad0 += dquad_y;
446  dquad_y += 2;
447  p0 += picref->linesize[0];
448  }
449 
450  /* draw sliding color line */
451  p0 = p = data + picref->linesize[0] * height * 3/4;
452  grad = (256 * test->nb_frame * test->time_base.num / test->time_base.den) %
453  GRADIENT_SIZE;
454  rgrad = 0;
455  dgrad = GRADIENT_SIZE / width;
456  drgrad = GRADIENT_SIZE % width;
457  for (x = 0; x < width; x++) {
458  *(p++) =
459  grad < 256 || grad >= 5 * 256 ? 255 :
460  grad >= 2 * 256 && grad < 4 * 256 ? 0 :
461  grad < 2 * 256 ? 2 * 256 - 1 - grad : grad - 4 * 256;
462  *(p++) =
463  grad >= 4 * 256 ? 0 :
464  grad >= 1 * 256 && grad < 3 * 256 ? 255 :
465  grad < 1 * 256 ? grad : 4 * 256 - 1 - grad;
466  *(p++) =
467  grad < 2 * 256 ? 0 :
468  grad >= 3 * 256 && grad < 5 * 256 ? 255 :
469  grad < 3 * 256 ? grad - 2 * 256 : 6 * 256 - 1 - grad;
470  grad += dgrad;
471  rgrad += drgrad;
472  if (rgrad >= GRADIENT_SIZE) {
473  grad++;
474  rgrad -= GRADIENT_SIZE;
475  }
476  if (grad >= GRADIENT_SIZE)
477  grad -= GRADIENT_SIZE;
478  }
479  p = p0;
480  for (y = height / 8; y > 0; y--) {
481  memcpy(p+picref->linesize[0], p, 3 * width);
482  p += picref->linesize[0];
483  }
484 
485  /* draw digits */
486  seg_size = width / 80;
487  if (seg_size >= 1 && height >= 13 * seg_size) {
488  double time = av_q2d(test->time_base) * test->nb_frame *
489  pow(10, test->nb_decimals);
490  if (time > INT_MAX)
491  return;
492  second = (int)time;
493  x = width - (width - seg_size * 64) / 2;
494  y = (height - seg_size * 13) / 2;
495  p = data + (x*3 + y * picref->linesize[0]);
496  for (i = 0; i < 8; i++) {
497  p -= 3 * 8 * seg_size;
498  draw_digit(second % 10, p, picref->linesize[0], seg_size);
499  second /= 10;
500  if (second == 0)
501  break;
502  }
503  }
504 }
505 
506 static av_cold int test_init(AVFilterContext *ctx, const char *args)
507 {
508  TestSourceContext *test = ctx->priv;
509 
510  test->class = &testsrc_class;
511  test->fill_picture_fn = test_fill_picture;
512  return init(ctx, args);
513 }
514 
515 static int test_query_formats(AVFilterContext *ctx)
516 {
517  static const enum AVPixelFormat pix_fmts[] = {
518  AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
519  };
520  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
521  return 0;
522 }
523 
524 static const AVFilterPad avfilter_vsrc_testsrc_outputs[] = {
525  {
526  .name = "default",
527  .type = AVMEDIA_TYPE_VIDEO,
528  .request_frame = request_frame,
529  .config_props = config_props,
530  },
531  { NULL }
532 };
533 
534 AVFilter avfilter_vsrc_testsrc = {
535  .name = "testsrc",
536  .description = NULL_IF_CONFIG_SMALL("Generate test pattern."),
537  .priv_size = sizeof(TestSourceContext),
538  .init = test_init,
539  .uninit = uninit,
540 
541  .query_formats = test_query_formats,
542 
543  .inputs = NULL,
544  .outputs = avfilter_vsrc_testsrc_outputs,
545  .priv_class = &testsrc_class,
546 };
547 
548 #endif /* CONFIG_TESTSRC_FILTER */
549 
550 #if CONFIG_RGBTESTSRC_FILTER
551 
552 #define rgbtestsrc_options options
553 AVFILTER_DEFINE_CLASS(rgbtestsrc);
554 
555 #define R 0
556 #define G 1
557 #define B 2
558 #define A 3
559 
560 static void rgbtest_put_pixel(uint8_t *dst, int dst_linesize,
561  int x, int y, int r, int g, int b, enum AVPixelFormat fmt,
562  uint8_t rgba_map[4])
563 {
564  int32_t v;
565  uint8_t *p;
566 
567  switch (fmt) {
568  case AV_PIX_FMT_BGR444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r >> 4) << 8) | ((g >> 4) << 4) | (b >> 4); break;
569  case AV_PIX_FMT_RGB444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b >> 4) << 8) | ((g >> 4) << 4) | (r >> 4); break;
570  case AV_PIX_FMT_BGR555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<10) | ((g>>3)<<5) | (b>>3); break;
571  case AV_PIX_FMT_RGB555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<10) | ((g>>3)<<5) | (r>>3); break;
572  case AV_PIX_FMT_BGR565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<11) | ((g>>2)<<5) | (b>>3); break;
573  case AV_PIX_FMT_RGB565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<11) | ((g>>2)<<5) | (r>>3); break;
574  case AV_PIX_FMT_RGB24:
575  case AV_PIX_FMT_BGR24:
576  v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
577  p = dst + 3*x + y*dst_linesize;
578  AV_WL24(p, v);
579  break;
580  case AV_PIX_FMT_RGBA:
581  case AV_PIX_FMT_BGRA:
582  case AV_PIX_FMT_ARGB:
583  case AV_PIX_FMT_ABGR:
584  v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8)) + (255 << (rgba_map[A]*8));
585  p = dst + 4*x + y*dst_linesize;
586  AV_WL32(p, v);
587  break;
588  }
589 }
590 
591 static void rgbtest_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
592 {
593  TestSourceContext *test = ctx->priv;
594  int x, y, w = picref->video->w, h = picref->video->h;
595 
596  for (y = 0; y < h; y++) {
597  for (x = 0; x < picref->video->w; x++) {
598  int c = 256*x/w;
599  int r = 0, g = 0, b = 0;
600 
601  if (3*y < h ) r = c;
602  else if (3*y < 2*h) g = c;
603  else b = c;
604 
605  rgbtest_put_pixel(picref->data[0], picref->linesize[0], x, y, r, g, b,
606  ctx->outputs[0]->format, test->rgba_map);
607  }
608  }
609 }
610 
611 static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args)
612 {
613  TestSourceContext *test = ctx->priv;
614 
615  test->draw_once = 1;
616  test->class = &rgbtestsrc_class;
617  test->fill_picture_fn = rgbtest_fill_picture;
618  return init(ctx, args);
619 }
620 
621 static int rgbtest_query_formats(AVFilterContext *ctx)
622 {
623  static const enum AVPixelFormat pix_fmts[] = {
624  AV_PIX_FMT_RGBA, AV_PIX_FMT_ARGB, AV_PIX_FMT_BGRA, AV_PIX_FMT_ABGR,
625  AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24,
626  AV_PIX_FMT_RGB444, AV_PIX_FMT_BGR444,
627  AV_PIX_FMT_RGB565, AV_PIX_FMT_BGR565,
628  AV_PIX_FMT_RGB555, AV_PIX_FMT_BGR555,
629  AV_PIX_FMT_NONE
630  };
631  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
632  return 0;
633 }
634 
635 static int rgbtest_config_props(AVFilterLink *outlink)
636 {
637  TestSourceContext *test = outlink->src->priv;
638 
639  ff_fill_rgba_map(test->rgba_map, outlink->format);
640  return config_props(outlink);
641 }
642 
643 static const AVFilterPad avfilter_vsrc_rgbtestsrc_outputs[] = {
644  {
645  .name = "default",
646  .type = AVMEDIA_TYPE_VIDEO,
647  .request_frame = request_frame,
648  .config_props = rgbtest_config_props,
649  },
650  { NULL }
651 };
652 
653 AVFilter avfilter_vsrc_rgbtestsrc = {
654  .name = "rgbtestsrc",
655  .description = NULL_IF_CONFIG_SMALL("Generate RGB test pattern."),
656  .priv_size = sizeof(TestSourceContext),
657  .init = rgbtest_init,
658  .uninit = uninit,
659 
660  .query_formats = rgbtest_query_formats,
661 
662  .inputs = NULL,
663 
664  .outputs = avfilter_vsrc_rgbtestsrc_outputs,
665  .priv_class = &rgbtestsrc_class,
666 };
667 
668 #endif /* CONFIG_RGBTESTSRC_FILTER */
669 
670 #if CONFIG_SMPTEBARS_FILTER
671 
672 #define smptebars_options options
673 AVFILTER_DEFINE_CLASS(smptebars);
674 
675 static const uint8_t rainbow[7][4] = {
676  { 191, 191, 191, 255 }, /* gray */
677  { 191, 191, 0, 255 }, /* yellow */
678  { 0, 191, 191, 255 }, /* cyan */
679  { 0, 191, 0, 255 }, /* green */
680  { 191, 0, 191, 255 }, /* magenta */
681  { 191, 0, 0, 255 }, /* red */
682  { 0, 0, 191, 255 }, /* blue */
683 };
684 
685 static const uint8_t wobnair[7][4] = {
686  { 0, 0, 191, 255 }, /* blue */
687  { 19, 19, 19, 255 }, /* 7.5% intensity black */
688  { 191, 0, 191, 255 }, /* magenta */
689  { 19, 19, 19, 255 }, /* 7.5% intensity black */
690  { 0, 191, 191, 255 }, /* cyan */
691  { 19, 19, 19, 255 }, /* 7.5% intensity black */
692  { 191, 191, 191, 255 }, /* gray */
693 };
694 
695 static const uint8_t white[4] = { 255, 255, 255, 255 };
696 static const uint8_t black[4] = { 19, 19, 19, 255 }; /* 7.5% intensity black */
697 
698 /* pluge pulses */
699 static const uint8_t neg4ire[4] = { 9, 9, 9, 255 }; /* 3.5% intensity black */
700 static const uint8_t pos4ire[4] = { 29, 29, 29, 255 }; /* 11.5% intensity black */
701 
702 /* fudged Q/-I */
703 static const uint8_t i_pixel[4] = { 0, 68, 130, 255 };
704 static const uint8_t q_pixel[4] = { 67, 0, 130, 255 };
705 
706 static void smptebars_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
707 {
708  TestSourceContext *test = ctx->priv;
709  FFDrawColor color;
710  int r_w, r_h, w_h, p_w, p_h, i, x = 0;
711 
712  r_w = (test->w + 6) / 7;
713  r_h = test->h * 2 / 3;
714  w_h = test->h * 3 / 4 - r_h;
715  p_w = r_w * 5 / 4;
716  p_h = test->h - w_h - r_h;
717 
718 #define DRAW_COLOR(rgba, x, y, w, h) \
719  ff_draw_color(&test->draw, &color, rgba); \
720  ff_fill_rectangle(&test->draw, &color, \
721  picref->data, picref->linesize, x, y, w, h) \
722 
723  for (i = 0; i < 7; i++) {
724  DRAW_COLOR(rainbow[i], x, 0, FFMIN(r_w, test->w - x), r_h);
725  DRAW_COLOR(wobnair[i], x, r_h, FFMIN(r_w, test->w - x), w_h);
726  x += r_w;
727  }
728  x = 0;
729  DRAW_COLOR(i_pixel, x, r_h + w_h, p_w, p_h);
730  x += p_w;
731  DRAW_COLOR(white, x, r_h + w_h, p_w, p_h);
732  x += p_w;
733  DRAW_COLOR(q_pixel, x, r_h + w_h, p_w, p_h);
734  x += p_w;
735  DRAW_COLOR(black, x, r_h + w_h, 5 * r_w - x, p_h);
736  x += 5 * r_w - x;
737  DRAW_COLOR(neg4ire, x, r_h + w_h, r_w / 3, p_h);
738  x += r_w / 3;
739  DRAW_COLOR(black, x, r_h + w_h, r_w / 3, p_h);
740  x += r_w / 3;
741  DRAW_COLOR(pos4ire, x, r_h + w_h, r_w / 3, p_h);
742  x += r_w / 3;
743  DRAW_COLOR(black, x, r_h + w_h, test->w - x, p_h);
744 }
745 
746 static av_cold int smptebars_init(AVFilterContext *ctx, const char *args)
747 {
748  TestSourceContext *test = ctx->priv;
749 
750  test->class = &smptebars_class;
751  test->fill_picture_fn = smptebars_fill_picture;
752  test->draw_once = 1;
753  return init(ctx, args);
754 }
755 
756 static int smptebars_query_formats(AVFilterContext *ctx)
757 {
758  ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
759  return 0;
760 }
761 
762 static int smptebars_config_props(AVFilterLink *outlink)
763 {
764  AVFilterContext *ctx = outlink->src;
765  TestSourceContext *test = ctx->priv;
766 
767  ff_draw_init(&test->draw, outlink->format, 0);
768 
769  return config_props(outlink);
770 }
771 
772 static const AVFilterPad smptebars_outputs[] = {
773  {
774  .name = "default",
775  .type = AVMEDIA_TYPE_VIDEO,
776  .request_frame = request_frame,
777  .config_props = smptebars_config_props,
778  },
779  { NULL }
780 };
781 
782 AVFilter avfilter_vsrc_smptebars = {
783  .name = "smptebars",
784  .description = NULL_IF_CONFIG_SMALL("Generate SMPTE color bars."),
785  .priv_size = sizeof(TestSourceContext),
786  .init = smptebars_init,
787  .uninit = uninit,
788 
789  .query_formats = smptebars_query_formats,
790  .inputs = NULL,
791  .outputs = smptebars_outputs,
792  .priv_class = &smptebars_class,
793 };
794 
795 #endif /* CONFIG_SMPTEBARS_FILTER */
Generated on Sat May 25 2013 04:01:16 for FFmpeg by   doxygen 1.8.2