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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 frame_rate;
57  int64_t pts, max_pts, duration;
58  int hsub, vsub;
59  enum test_type test;
60 } MPTestContext;
61 
62 #define OFFSET(x) offsetof(MPTestContext, x)
63 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
64 static const AVOption mptestsrc_options[]= {
65  { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
66  { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
67  { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
68  { "d", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
69 
70  { "test", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
71  { "t", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
72  { "dc_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
73  { "dc_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
74  { "freq_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
75  { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
76  { "amp_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },
77  { "amp_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
78  { "cbp", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_CBP}, INT_MIN, INT_MAX, FLAGS, "test" },
79  { "mv", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_MV}, INT_MIN, INT_MAX, FLAGS, "test" },
80  { "ring1", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING1}, INT_MIN, INT_MAX, FLAGS, "test" },
81  { "ring2", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING2}, INT_MIN, INT_MAX, FLAGS, "test" },
82  { "all", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_ALL}, INT_MIN, INT_MAX, FLAGS, "test" },
83  { NULL },
84 };
85 
86 AVFILTER_DEFINE_CLASS(mptestsrc);
87 
88 static double c[64];
89 
90 static void init_idct(void)
91 {
92  int i, j;
93 
94  for (i = 0; i < 8; i++) {
95  double s = i == 0 ? sqrt(0.125) : 0.5;
96 
97  for (j = 0; j < 8; j++)
98  c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
99  }
100 }
101 
102 static void idct(uint8_t *dst, int dst_linesize, int src[64])
103 {
104  int i, j, k;
105  double tmp[64];
106 
107  for (i = 0; i < 8; i++) {
108  for (j = 0; j < 8; j++) {
109  double sum = 0.0;
110 
111  for (k = 0; k < 8; k++)
112  sum += c[k*8+j] * src[8*i+k];
113 
114  tmp[8*i+j] = sum;
115  }
116  }
117 
118  for (j = 0; j < 8; j++) {
119  for (i = 0; i < 8; i++) {
120  double sum = 0.0;
121 
122  for (k = 0; k < 8; k++)
123  sum += c[k*8+i]*tmp[8*k+j];
124 
125  dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
126  }
127  }
128 }
129 
130 static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
131 {
132  int x, y;
133 
134  for (y = 0; y < h; y++)
135  for (x = 0; x < w; x++)
136  dst[x + y*dst_linesize] = color;
137 }
138 
139 static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
140 {
141  int src[64];
142 
143  memset(src, 0, 64*sizeof(int));
144  src[0] = dc;
145  if (amp)
146  src[freq] = amp;
147  idct(dst, dst_linesize, src);
148 }
149 
150 static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
151 {
152  if (cbp&1) draw_basis(dst[0] , dst_linesize[0], amp, 1, dc);
153  if (cbp&2) draw_basis(dst[0]+8 , dst_linesize[0], amp, 1, dc);
154  if (cbp&4) draw_basis(dst[0]+ 8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
155  if (cbp&8) draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
156  if (cbp&16) draw_basis(dst[1] , dst_linesize[1], amp, 1, dc);
157  if (cbp&32) draw_basis(dst[2] , dst_linesize[2], amp, 1, dc);
158 }
159 
160 static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
161 {
162  const int step = FFMAX(256/(w*h/256), 1);
163  int x, y, color = off;
164 
165  for (y = 0; y < h; y += 16) {
166  for (x = 0; x < w; x += 16) {
167  draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
168  color += step;
169  }
170  }
171 }
172 
173 static void freq_test(uint8_t *dst, int dst_linesize, int off)
174 {
175  int x, y, freq = 0;
176 
177  for (y = 0; y < 8*16; y += 16) {
178  for (x = 0; x < 8*16; x += 16) {
179  draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
180  freq++;
181  }
182  }
183 }
184 
185 static void amp_test(uint8_t *dst, int dst_linesize, int off)
186 {
187  int x, y, amp = off;
188 
189  for (y = 0; y < 16*16; y += 16) {
190  for (x = 0; x < 16*16; x += 16) {
191  draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
192  amp++;
193  }
194  }
195 }
196 
197 static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
198 {
199  int x, y, cbp = 0;
200 
201  for (y = 0; y < 16*8; y += 16) {
202  for (x = 0; x < 16*8; x += 16) {
203  uint8_t *dst1[3];
204  dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
205  dst1[1] = dst[1] + x + y* dst_linesize[1];
206  dst1[2] = dst[2] + x + y* dst_linesize[2];
207 
208  draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
209  cbp++;
210  }
211  }
212 }
213 
214 static void mv_test(uint8_t *dst, int dst_linesize, int off)
215 {
216  int x, y;
217 
218  for (y = 0; y < 16*16; y++) {
219  if (y&16)
220  continue;
221  for (x = 0; x < 16*16; x++)
222  dst[x + y*dst_linesize] = x + off*8/(y/32+1);
223  }
224 }
225 
226 static void ring1_test(uint8_t *dst, int dst_linesize, int off)
227 {
228  int x, y, color = 0;
229 
230  for (y = off; y < 16*16; y += 16) {
231  for (x = off; x < 16*16; x += 16) {
232  draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
233  color++;
234  }
235  }
236 }
237 
238 static void ring2_test(uint8_t *dst, int dst_linesize, int off)
239 {
240  int x, y;
241 
242  for (y = 0; y < 16*16; y++) {
243  for (x = 0; x < 16*16; x++) {
244  double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
245  double r = d/20 - (int)(d/20);
246  if (r < off/30.0) {
247  dst[x + y*dst_linesize] = 255;
248  dst[x + y*dst_linesize+256] = 0;
249  } else {
250  dst[x + y*dst_linesize] = x;
251  dst[x + y*dst_linesize+256] = x;
252  }
253  }
254  }
255 }
256 
257 static av_cold int init(AVFilterContext *ctx)
258 {
259  MPTestContext *test = ctx->priv;
260 
261  test->max_pts = test->duration >= 0 ?
262  av_rescale_q(test->duration, AV_TIME_BASE_Q, av_inv_q(test->frame_rate)) : -1;
263  test->frame_nb = 0;
264  test->pts = 0;
265 
266  av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",
267  test->frame_rate.num, test->frame_rate.den,
268  test->duration < 0 ? -1 : test->max_pts * av_q2d(av_inv_q(test->frame_rate)));
269  init_idct();
270 
271  return 0;
272 }
273 
274 static int config_props(AVFilterLink *outlink)
275 {
276  AVFilterContext *ctx = outlink->src;
277  MPTestContext *test = ctx->priv;
278  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format);
279 
280  test->hsub = pix_desc->log2_chroma_w;
281  test->vsub = pix_desc->log2_chroma_h;
282 
283  outlink->w = WIDTH;
284  outlink->h = HEIGHT;
285  outlink->time_base = av_inv_q(test->frame_rate);
286 
287  return 0;
288 }
289 
290 static int query_formats(AVFilterContext *ctx)
291 {
292  static const enum AVPixelFormat pix_fmts[] = {
293  AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
294  };
295 
296  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
297  return 0;
298 }
299 
300 static int request_frame(AVFilterLink *outlink)
301 {
302  MPTestContext *test = outlink->src->priv;
303  AVFrame *picref;
304  int w = WIDTH, h = HEIGHT,
305  cw = FF_CEIL_RSHIFT(w, test->hsub), ch = FF_CEIL_RSHIFT(h, test->vsub);
306  unsigned int frame = test->frame_nb;
307  enum test_type tt = test->test;
308  int i;
309 
310  if (test->max_pts >= 0 && test->pts > test->max_pts)
311  return AVERROR_EOF;
312  picref = ff_get_video_buffer(outlink, w, h);
313  if (!picref)
314  return AVERROR(ENOMEM);
315  picref->pts = test->pts++;
316 
317  // clean image
318  for (i = 0; i < h; i++)
319  memset(picref->data[0] + i*picref->linesize[0], 0, w);
320  for (i = 0; i < ch; i++) {
321  memset(picref->data[1] + i*picref->linesize[1], 128, cw);
322  memset(picref->data[2] + i*picref->linesize[2], 128, cw);
323  }
324 
325  if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
326  tt = (frame/30)%(TEST_NB-1);
327 
328  switch (tt) {
329  case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
330  case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
331  case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;
332  case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
333  case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;
334  case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;
335  case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;
336  case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;
337  case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
338  case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
339  }
340 
341  test->frame_nb++;
342  return ff_filter_frame(outlink, picref);
343 }
344 
345 static const AVFilterPad mptestsrc_outputs[] = {
346  {
347  .name = "default",
348  .type = AVMEDIA_TYPE_VIDEO,
349  .request_frame = request_frame,
350  .config_props = config_props,
351  },
352  { NULL }
353 };
354 
355 AVFilter avfilter_vsrc_mptestsrc = {
356  .name = "mptestsrc",
357  .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
358  .priv_size = sizeof(MPTestContext),
359  .init = init,
360 
361  .query_formats = query_formats,
362 
363  .inputs = NULL,
364  .outputs = mptestsrc_outputs,
365  .priv_class = &mptestsrc_class,
366 };
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