1 /*
2 * Copyright (c) 2017-2022 Paul B Mahol
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/avassert.h"
22 #include "libavutil/common.h"
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/ffmath.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/imgutils.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavutil/parseutils.h"
29 #include "libavutil/timestamp.h"
30 #include "libavutil/xga_font_data.h"
31 #include "avfilter.h"
32 #include "drawutils.h"
33 #include "filters.h"
34 #include "formats.h"
35 #include "internal.h"
36 #include "audio.h"
37 #include "video.h"
38
39 typedef struct AVSyncTestContext {
40 const AVClass *class;
41
42 int w, h;
43 AVRational frame_rate;
44 int sample_rate;
45 int64_t duration;
46 int64_t apts, vpts;
47 float amplitude;
48 int period;
49 int delay;
50 int cycle;
51
52 int beep;
53 int beep_duration;
54 int flash;
55 int dir;
56 AVRational vdelay, delay_max, delay_min;
57 AVRational delay_range;
58 int64_t prev_intpart;
59
60 uint8_t rgba[3][4];
61 FFDrawContext draw;
62 FFDrawColor fg;
63 FFDrawColor bg;
64 FFDrawColor ag;
65 } AVSyncTestContext;
66
67 #define OFFSET(x) offsetof(AVSyncTestContext, x)
68 #define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
69 #define V AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
70
71 static const AVOption avsynctest_options[] = {
72 {"size", "set frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, V },
73 {"s", "set frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, V },
74 {"framerate", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="30"}, 0,INT_MAX, V },
75 {"fr", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="30"}, 0,INT_MAX, V },
76 {"samplerate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},8000,384000, A },
77 {"sr", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},8000,384000, A },
78 {"amplitude", "set beep amplitude", OFFSET(amplitude), AV_OPT_TYPE_FLOAT, {.dbl=.7}, 0., 1., A },
79 {"a", "set beep amplitude", OFFSET(amplitude), AV_OPT_TYPE_FLOAT, {.dbl=.7}, 0., 1., A },
80 {"period", "set beep period", OFFSET(period), AV_OPT_TYPE_INT, {.i64=3}, 1, 99., A },
81 {"p", "set beep period", OFFSET(period), AV_OPT_TYPE_INT, {.i64=3}, 1, 99., A },
82 {"delay", "set flash delay", OFFSET(delay), AV_OPT_TYPE_INT, {.i64=0}, -30, 30, V },
83 {"dl", "set flash delay", OFFSET(delay), AV_OPT_TYPE_INT, {.i64=0}, -30, 30, V },
84 {"cycle", "set delay cycle", OFFSET(cycle), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, V },
85 {"c", "set delay cycle", OFFSET(cycle), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, V },
86 {"duration", "set duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=0}, 0, INT64_MAX, V|A },
87 {"d", "set duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=0}, 0, INT64_MAX, V|A },
88 {"fg", "set foreground color", OFFSET(rgba[0]), AV_OPT_TYPE_COLOR, {.str="white"}, 0, 0, V },
89 {"bg", "set background color", OFFSET(rgba[1]), AV_OPT_TYPE_COLOR, {.str="black"}, 0, 0, V },
90 {"ag", "set additional color", OFFSET(rgba[2]), AV_OPT_TYPE_COLOR, {.str="gray"}, 0, 0, V },
91 {NULL},
92 };
93
94 AVFILTER_DEFINE_CLASS(avsynctest);
95
query_formats(AVFilterContext * ctx)96 static av_cold int query_formats(AVFilterContext *ctx)
97 {
98 AVSyncTestContext *s = ctx->priv;
99 AVFilterChannelLayouts *chlayout = NULL;
100 int sample_rates[] = { s->sample_rate, -1 };
101 static const enum AVSampleFormat sample_fmts[] = {
102 AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_NONE
103 };
104 AVFilterFormats *formats;
105 int ret;
106
107 formats = ff_make_format_list(sample_fmts);
108 if (!formats)
109 return AVERROR(ENOMEM);
110 if ((ret = ff_formats_ref(formats, &ctx->outputs[0]->incfg.formats)) < 0)
111 return ret;
112
113 formats = ff_draw_supported_pixel_formats(0);
114 if (!formats)
115 return AVERROR(ENOMEM);
116 if ((ret = ff_formats_ref(formats, &ctx->outputs[1]->incfg.formats)) < 0)
117 return ret;
118
119 if ((ret = ff_add_channel_layout(&chlayout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_MONO)) < 0)
120 return ret;
121 ret = ff_set_common_channel_layouts(ctx, chlayout);
122 if (ret < 0)
123 return ret;
124
125 formats = ff_make_format_list(sample_rates);
126 if (!formats)
127 return AVERROR(ENOMEM);
128 return ff_set_common_samplerates(ctx, formats);
129 }
130
aconfig_props(AVFilterLink * outlink)131 static av_cold int aconfig_props(AVFilterLink *outlink)
132 {
133 AVFilterContext *ctx = outlink->src;
134 AVSyncTestContext *s = ctx->priv;
135
136 outlink->sample_rate = s->sample_rate;
137 outlink->time_base = (AVRational){1, s->sample_rate};
138
139 s->beep_duration = av_rescale(s->sample_rate, s->frame_rate.den, s->frame_rate.num);
140 s->duration = av_rescale(s->duration, s->sample_rate, AV_TIME_BASE);
141
142 return 0;
143 }
144
config_props(AVFilterLink * outlink)145 static av_cold int config_props(AVFilterLink *outlink)
146 {
147 AVFilterContext *ctx = outlink->src;
148 AVSyncTestContext *s = ctx->priv;
149
150 outlink->w = s->w;
151 outlink->h = s->h;
152 outlink->time_base = av_inv_q(s->frame_rate);
153 outlink->frame_rate = s->frame_rate;
154 outlink->sample_aspect_ratio = (AVRational) {1, 1};
155 s->delay_min = av_mul_q(s->frame_rate, av_make_q(-1, 2));
156 s->delay_max = av_mul_q(s->delay_min, av_make_q(-1, 1));
157 s->delay_range = av_sub_q(s->delay_max, s->delay_min);
158 s->vdelay = av_make_q(s->delay, 1);
159 s->dir = 1;
160 s->prev_intpart = INT64_MIN;
161
162 ff_draw_init(&s->draw, outlink->format, 0);
163
164 ff_draw_color(&s->draw, &s->fg, s->rgba[0]);
165 ff_draw_color(&s->draw, &s->bg, s->rgba[1]);
166 ff_draw_color(&s->draw, &s->ag, s->rgba[2] );
167
168 return 0;
169 }
170
171 #define FPI 0x8000
172
sin32(int32_t x,int shift)173 static int32_t sin32(int32_t x, int shift)
174 {
175 const double pi = M_PI;
176 const int32_t a = ((2.0 * pi) * (1 << 24));
177 const int32_t b = (1 << 7) * (12.0 / pi - 1.0 - pi) * (1 << 24);
178 const int32_t c = (1 << 9) * 3.0 * (2.0 + pi - 16.0 / pi) * (1 << 24);
179 int64_t x2, result;
180 int32_t t1, t2;
181
182 x &= 2 * FPI - 1;
183
184 if (x >= (3 * FPI / 2))
185 x = x - 2 * FPI;
186 else if (x > FPI / 2)
187 x = FPI - x;
188
189 x2 = x * x;
190 t1 = (x2 * c) >> 32;
191 t2 = ((b + t1) * x2) >> 32;
192 x = x << 8;
193
194 result = a + t2;
195 result *= x;
196 result += (1U << 31);
197 result >>= (32 - shift);
198
199 return result;
200 }
201
audio_frame(AVFilterLink * outlink)202 static int audio_frame(AVFilterLink *outlink)
203 {
204 AVFilterContext *ctx = outlink->src;
205 AVSyncTestContext *s = ctx->priv;
206 const int a = lrintf(s->amplitude * 15);
207 int64_t duration[2];
208 int64_t delta;
209 AVFrame *out;
210 int32_t *dst;
211
212 delta = av_rescale_q(s->vpts, av_make_q(s->sample_rate, 1), s->frame_rate) - s->apts;
213 if (delta < 0)
214 return 1;
215
216 duration[0] = av_rescale_rnd(s->sample_rate, s->frame_rate.den, s->frame_rate.num, AV_ROUND_DOWN);
217 duration[1] = av_rescale_rnd(s->sample_rate, s->frame_rate.den, s->frame_rate.num, AV_ROUND_UP);
218
219 delta = duration[delta > 0];
220 out = ff_get_audio_buffer(outlink, delta);
221 if (!out)
222 return AVERROR(ENOMEM);
223
224 out->pts = s->apts;
225 dst = (int32_t *)out->data[0];
226
227 for (int i = 0; i < delta; i++) {
228 if (((s->apts + i) % (s->period * s->sample_rate)) == 0)
229 s->beep = 1;
230 if (s->beep) {
231 dst[i] = sin32(av_rescale_q(800LL * 2LL * FPI, outlink->time_base, av_make_q(1, s->apts + i)), a);
232 s->beep++;
233 } else {
234 dst[i] = 0;
235 }
236 if (s->beep >= s->beep_duration) {
237 s->beep = 0;
238 }
239 }
240 s->apts += out->nb_samples;
241
242 return ff_filter_frame(outlink, out);
243 }
244
draw_text(FFDrawContext * draw,AVFrame * out,FFDrawColor * color,int x0,int y0,const uint8_t * text)245 static void draw_text(FFDrawContext *draw, AVFrame *out, FFDrawColor *color,
246 int x0, int y0, const uint8_t *text)
247 {
248 int x = x0;
249
250 for (; *text; text++) {
251 if (*text == '\n') {
252 x = x0;
253 y0 += 8;
254 continue;
255 }
256 ff_blend_mask(draw, color, out->data, out->linesize,
257 out->width, out->height,
258 avpriv_cga_font + *text * 8, 1, 8, 8, 0, 0, x, y0);
259 x += 8;
260 }
261 }
262
offset(int x,int num,int den)263 static int offset(int x, int num, int den)
264 {
265 return av_rescale_rnd(x, num, den, AV_ROUND_UP);
266 }
267
video_frame(AVFilterLink * outlink)268 static int video_frame(AVFilterLink *outlink)
269 {
270 AVFilterContext *ctx = outlink->src;
271 AVSyncTestContext *s = ctx->priv;
272 const int w = outlink->w;
273 const int h = outlink->h;
274 const int step = av_rescale_rnd(w, s->delay_range.den, s->delay_range.num, AV_ROUND_DOWN);
275 char text[128];
276 int new_offset;
277 int64_t delta, temp, intpart;
278 AVFrame *out;
279
280 delta = av_rescale_q(s->apts, s->frame_rate, av_make_q(s->sample_rate, 1)) - s->vpts;
281 if (delta < 0)
282 return 1;
283
284 out = ff_get_video_buffer(outlink, w, h);
285 if (!out)
286 return AVERROR(ENOMEM);
287
288 ff_fill_rectangle(&s->draw, &s->bg, out->data, out->linesize, 0, 0, w, h);
289
290 snprintf(text, sizeof(text), "FRN: %"PRId64"", s->vpts);
291 draw_text(&s->draw, out, &s->fg, offset(w, 1, 10), offset(h, 1, 10), text);
292
293 snprintf(text, sizeof(text), "SEC: %s", av_ts2timestr(s->vpts, &outlink->time_base));
294 draw_text(&s->draw, out, &s->fg, offset(w, 1, 10), offset(h, 9, 10), text);
295
296 snprintf(text, sizeof(text), "DLY: %d", s->vdelay.num);
297 draw_text(&s->draw, out, &s->fg, offset(w, 9, 10) - strlen(text) * 8, offset(h, 9, 10), text);
298
299 snprintf(text, sizeof(text), "FPS: %d/%d", s->frame_rate.num, s->frame_rate.den);
300 draw_text(&s->draw, out, &s->fg, offset(w, 9, 10) - strlen(text) * 8, offset(h, 1, 10), text);
301
302 snprintf(text, sizeof(text), "P: %d", s->period);
303 draw_text(&s->draw, out, &s->ag, offset(w, 1, 2) - strlen(text) * 4, offset(h, 9, 10), text);
304
305 snprintf(text, sizeof(text), "SR: %d", s->sample_rate);
306 draw_text(&s->draw, out, &s->ag, offset(w, 1, 2) - strlen(text) * 4, offset(h, 1, 10), text);
307
308 snprintf(text, sizeof(text), "A: %1.2f", s->amplitude);
309 draw_text(&s->draw, out, &s->ag, offset(w, 1, 10), offset(h, 1, 2), text);
310
311 snprintf(text, sizeof(text), "WxH: %dx%d", w, h);
312 draw_text(&s->draw, out, &s->ag, offset(w, 9, 10) - strlen(text) * 8, offset(h, 1, 2), text);
313
314 temp = s->vpts + s->vdelay.num;
315 intpart = av_rescale_rnd(temp, outlink->time_base.num, outlink->time_base.den, AV_ROUND_NEAR_INF);
316 intpart = temp - av_rescale_rnd(intpart, outlink->time_base.den, outlink->time_base.num, AV_ROUND_NEAR_INF);
317
318 new_offset = offset(w, 1, 2);
319 ff_fill_rectangle(&s->draw, &s->fg, out->data, out->linesize,
320 av_clip(new_offset + step * intpart, 0, w - 2),
321 offset(h, 141, 200), offset(step, 2, 3), offset(h, 1, 25));
322
323 if (intpart == 0 && s->prev_intpart != intpart) {
324 if (s->flash >= s->period) {
325 int result;
326
327 if (s->cycle)
328 s->vdelay = av_add_q(s->vdelay, av_make_q(s->dir, 1));
329 result = av_cmp_q(s->vdelay, s->delay_max);
330 if (result >= 0)
331 s->dir = -1;
332 result = av_cmp_q(s->vdelay, s->delay_min);
333 if (result <= 0)
334 s->dir = 1;
335 ff_fill_rectangle(&s->draw, &s->fg, out->data, out->linesize,
336 offset(w, 1, 3), offset(h, 1, 3), offset(w, 1, 3), offset(h, 1, 4));
337 s->flash = 0;
338 }
339 s->flash++;
340 }
341 s->prev_intpart = intpart;
342
343 for (int i = av_rescale(s->delay_min.num, 1, s->delay_min.den);
344 i < av_rescale(s->delay_max.num, 1, s->delay_max.den); i++) {
345 ff_fill_rectangle(&s->draw, &s->fg, out->data, out->linesize,
346 av_clip(new_offset + step * i, 0, w - 2),
347 offset(h, 7, 10), 1, offset(h, 1, 20));
348 }
349
350 out->pts = s->vpts++;
351
352 return ff_filter_frame(outlink, out);
353 }
354
activate(AVFilterContext * ctx)355 static int activate(AVFilterContext *ctx)
356 {
357 AVSyncTestContext *s = ctx->priv;
358 AVFilterLink *aoutlink = ctx->outputs[0];
359 AVFilterLink *voutlink = ctx->outputs[1];
360 int ret = FFERROR_NOT_READY;
361
362 if (!ff_outlink_frame_wanted(aoutlink) &&
363 !ff_outlink_frame_wanted(voutlink))
364 return ret;
365
366 if (s->duration > 0 && s->apts >= s->duration) {
367 ff_outlink_set_status(aoutlink, AVERROR_EOF, s->apts);
368 ff_outlink_set_status(voutlink, AVERROR_EOF, s->vpts);
369 return 0;
370 }
371
372 ret = audio_frame(aoutlink);
373 if (ret < 0)
374 return ret;
375 ret = video_frame(voutlink);
376
377 return ret;
378 }
379
380 static const AVFilterPad avsynctest_outputs[] = {
381 {
382 .name = "audio",
383 .type = AVMEDIA_TYPE_AUDIO,
384 .config_props = aconfig_props,
385 },
386 {
387 .name = "video",
388 .type = AVMEDIA_TYPE_VIDEO,
389 .config_props = config_props,
390 },
391 };
392
393 const AVFilter ff_avsrc_avsynctest = {
394 .name = "avsynctest",
395 .description = NULL_IF_CONFIG_SMALL("Generate an Audio Video Sync Test."),
396 .priv_size = sizeof(AVSyncTestContext),
397 .priv_class = &avsynctest_class,
398 .inputs = NULL,
399 .activate = activate,
400 FILTER_OUTPUTS(avsynctest_outputs),
401 FILTER_QUERY_FUNC(query_formats),
402 };
403