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vsrc_mptestsrc.c
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1 /*
2  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (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
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 /**
22  * @file
23  * MP test source, ported from MPlayer libmpcodecs/vf_test.c
24  */
25 
26 #include "libavutil/avstring.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/parseutils.h"
29 #include "libavutil/pixdesc.h"
30 #include "avfilter.h"
31 #include "internal.h"
32 #include "formats.h"
33 #include "video.h"
34 
35 #define WIDTH 512
36 #define HEIGHT 512
37 
38 enum test_type {
39  TEST_DC_LUMA,
40  TEST_DC_CHROMA,
41  TEST_FREQ_LUMA,
42  TEST_FREQ_CHROMA,
43  TEST_AMP_LUMA,
44  TEST_AMP_CHROMA,
45  TEST_CBP,
46  TEST_MV,
47  TEST_RING1,
48  TEST_RING2,
49  TEST_ALL,
50  TEST_NB
51 };
52 
53 typedef struct MPTestContext {
54  const AVClass *class;
55  unsigned int frame_nb;
56  AVRational time_base;
57  int64_t pts, max_pts;
58  int hsub, vsub;
59  char *size, *rate, *duration;
60  enum test_type test;
61 } MPTestContext;
62 
63 #define OFFSET(x) offsetof(MPTestContext, x)
64 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
65 static const AVOption mptestsrc_options[]= {
66  { "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, FLAGS },
67  { "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, FLAGS },
68  { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
69  { "d", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
70 
71  { "test", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
72  { "t", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
73  { "dc_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
74  { "dc_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
75  { "freq_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
76  { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
77  { "amp_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
78  { "amp_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
79  { "cbp", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_CBP}, INT_MIN, INT_MAX, FLAGS, "test" },
80  { "mv", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_MV}, INT_MIN, INT_MAX, FLAGS, "test" },
81  { "ring1", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING1}, INT_MIN, INT_MAX, FLAGS, "test" },
82  { "ring2", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING2}, INT_MIN, INT_MAX, FLAGS, "test" },
83  { "all", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_ALL}, INT_MIN, INT_MAX, FLAGS, "test" },
84 
85  { NULL },
86 };
87 
88 AVFILTER_DEFINE_CLASS(mptestsrc);
89 
90 static double c[64];
91 
92 static void init_idct(void)
93 {
94  int i, j;
95 
96  for (i = 0; i < 8; i++) {
97  double s = i == 0 ? sqrt(0.125) : 0.5;
98 
99  for (j = 0; j < 8; j++)
100  c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
101  }
102 }
103 
104 static void idct(uint8_t *dst, int dst_linesize, int src[64])
105 {
106  int i, j, k;
107  double tmp[64];
108 
109  for (i = 0; i < 8; i++) {
110  for (j = 0; j < 8; j++) {
111  double sum = 0.0;
112 
113  for (k = 0; k < 8; k++)
114  sum += c[k*8+j] * src[8*i+k];
115 
116  tmp[8*i+j] = sum;
117  }
118  }
119 
120  for (j = 0; j < 8; j++) {
121  for (i = 0; i < 8; i++) {
122  double sum = 0.0;
123 
124  for (k = 0; k < 8; k++)
125  sum += c[k*8+i]*tmp[8*k+j];
126 
127  dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
128  }
129  }
130 }
131 
132 static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
133 {
134  int x, y;
135 
136  for (y = 0; y < h; y++)
137  for (x = 0; x < w; x++)
138  dst[x + y*dst_linesize] = color;
139 }
140 
141 static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
142 {
143  int src[64];
144 
145  memset(src, 0, 64*sizeof(int));
146  src[0] = dc;
147  if (amp)
148  src[freq] = amp;
149  idct(dst, dst_linesize, src);
150 }
151 
152 static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
153 {
154  if (cbp&1) draw_basis(dst[0] , dst_linesize[0], amp, 1, dc);
155  if (cbp&2) draw_basis(dst[0]+8 , dst_linesize[0], amp, 1, dc);
156  if (cbp&4) draw_basis(dst[0]+ 8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
157  if (cbp&8) draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
158  if (cbp&16) draw_basis(dst[1] , dst_linesize[1], amp, 1, dc);
159  if (cbp&32) draw_basis(dst[2] , dst_linesize[2], amp, 1, dc);
160 }
161 
162 static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
163 {
164  const int step = FFMAX(256/(w*h/256), 1);
165  int x, y, color = off;
166 
167  for (y = 0; y < h; y += 16) {
168  for (x = 0; x < w; x += 16) {
169  draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
170  color += step;
171  }
172  }
173 }
174 
175 static void freq_test(uint8_t *dst, int dst_linesize, int off)
176 {
177  int x, y, freq = 0;
178 
179  for (y = 0; y < 8*16; y += 16) {
180  for (x = 0; x < 8*16; x += 16) {
181  draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
182  freq++;
183  }
184  }
185 }
186 
187 static void amp_test(uint8_t *dst, int dst_linesize, int off)
188 {
189  int x, y, amp = off;
190 
191  for (y = 0; y < 16*16; y += 16) {
192  for (x = 0; x < 16*16; x += 16) {
193  draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
194  amp++;
195  }
196  }
197 }
198 
199 static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
200 {
201  int x, y, cbp = 0;
202 
203  for (y = 0; y < 16*8; y += 16) {
204  for (x = 0; x < 16*8; x += 16) {
205  uint8_t *dst1[3];
206  dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
207  dst1[1] = dst[1] + x + y* dst_linesize[1];
208  dst1[2] = dst[2] + x + y* dst_linesize[2];
209 
210  draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
211  cbp++;
212  }
213  }
214 }
215 
216 static void mv_test(uint8_t *dst, int dst_linesize, int off)
217 {
218  int x, y;
219 
220  for (y = 0; y < 16*16; y++) {
221  if (y&16)
222  continue;
223  for (x = 0; x < 16*16; x++)
224  dst[x + y*dst_linesize] = x + off*8/(y/32+1);
225  }
226 }
227 
228 static void ring1_test(uint8_t *dst, int dst_linesize, int off)
229 {
230  int x, y, color = 0;
231 
232  for (y = off; y < 16*16; y += 16) {
233  for (x = off; x < 16*16; x += 16) {
234  draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
235  color++;
236  }
237  }
238 }
239 
240 static void ring2_test(uint8_t *dst, int dst_linesize, int off)
241 {
242  int x, y;
243 
244  for (y = 0; y < 16*16; y++) {
245  for (x = 0; x < 16*16; x++) {
246  double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
247  double r = d/20 - (int)(d/20);
248  if (r < off/30.0) {
249  dst[x + y*dst_linesize] = 255;
250  dst[x + y*dst_linesize+256] = 0;
251  } else {
252  dst[x + y*dst_linesize] = x;
253  dst[x + y*dst_linesize+256] = x;
254  }
255  }
256  }
257 }
258 
259 static av_cold int init(AVFilterContext *ctx, const char *args)
260 {
261  MPTestContext *test = ctx->priv;
262  AVRational frame_rate_q;
263  int64_t duration = -1;
264  int ret;
265 
266  test->class = &mptestsrc_class;
267  av_opt_set_defaults(test);
268 
269  if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0)
270  return ret;
271 
272  if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0) {
273  av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
274  return ret;
275  }
276 
277  if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
278  av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
279  return ret;
280  }
281 
282  test->time_base.num = frame_rate_q.den;
283  test->time_base.den = frame_rate_q.num;
284  test->max_pts = duration >= 0 ?
285  av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
286  test->frame_nb = 0;
287  test->pts = 0;
288 
289  av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",
290  frame_rate_q.num, frame_rate_q.den,
291  duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base));
292  init_idct();
293 
294  return 0;
295 }
296 
297 static int config_props(AVFilterLink *outlink)
298 {
299  AVFilterContext *ctx = outlink->src;
300  MPTestContext *test = ctx->priv;
301  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format);
302 
303  test->hsub = pix_desc->log2_chroma_w;
304  test->vsub = pix_desc->log2_chroma_h;
305 
306  outlink->w = WIDTH;
307  outlink->h = HEIGHT;
308  outlink->time_base = test->time_base;
309 
310  return 0;
311 }
312 
313 static int query_formats(AVFilterContext *ctx)
314 {
315  static const enum AVPixelFormat pix_fmts[] = {
316  AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
317  };
318 
319  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
320  return 0;
321 }
322 
323 static int request_frame(AVFilterLink *outlink)
324 {
325  MPTestContext *test = outlink->src->priv;
326  AVFilterBufferRef *picref;
327  int w = WIDTH, h = HEIGHT, ch = h>>test->vsub;
328  unsigned int frame = test->frame_nb;
329  enum test_type tt = test->test;
330 
331  if (test->max_pts >= 0 && test->pts > test->max_pts)
332  return AVERROR_EOF;
333  picref = ff_get_video_buffer(outlink, AV_PERM_WRITE, w, h);
334  picref->pts = test->pts++;
335 
336  // clean image
337  memset(picref->data[0], 0, picref->linesize[0] * h);
338  memset(picref->data[1], 128, picref->linesize[1] * ch);
339  memset(picref->data[2], 128, picref->linesize[2] * ch);
340 
341  if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
342  tt = (frame/30)%(TEST_NB-1);
343 
344  switch (tt) {
345  case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
346  case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
347  case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;
348  case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
349  case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;
350  case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;
351  case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;
352  case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;
353  case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
354  case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
355  }
356 
357  test->frame_nb++;
358  ff_filter_frame(outlink, picref);
359 
360  return 0;
361 }
362 
363 static const AVFilterPad mptestsrc_outputs[] = {
364  {
365  .name = "default",
366  .type = AVMEDIA_TYPE_VIDEO,
367  .request_frame = request_frame,
368  .config_props = config_props,
369  },
370  { NULL }
371 };
372 
373 AVFilter avfilter_vsrc_mptestsrc = {
374  .name = "mptestsrc",
375  .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
376  .priv_size = sizeof(MPTestContext),
377  .init = init,
378 
379  .query_formats = query_formats,
380 
381  .inputs = NULL,
382  .outputs = mptestsrc_outputs,
383  .priv_class = &mptestsrc_class,
384 };
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