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