FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/avf_showcqt.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 0 818 0.0%
Functions: 0 42 0.0%
Branches: 0 593 0.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2014-2015 Muhammad Faiz <mfcc64@gmail.com>
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 "config.h"
22 #include "libavutil/tx.h"
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/xga_font_data.h"
26 #include "libavutil/eval.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/time.h"
29 #include "avfilter.h"
30 #include "internal.h"
31 #include "lavfutils.h"
32 #include "lswsutils.h"
33
34 #if CONFIG_LIBFREETYPE
35 #include <ft2build.h>
36 #include FT_FREETYPE_H
37 #endif
38
39 #if CONFIG_LIBFONTCONFIG
40 #include <fontconfig/fontconfig.h>
41 #endif
42
43 #include "avf_showcqt.h"
44
45 #define BASEFREQ 20.01523126408007475
46 #define ENDFREQ 20495.59681441799654
47 #define TLENGTH "384*tc/(384+tc*f)"
48 #define TLENGTH_MIN 0.001
49 #define VOLUME_MAX 100.0
50 #define FONTCOLOR "st(0, (midi(f)-59.5)/12);" \
51 "st(1, if(between(ld(0),0,1), 0.5-0.5*cos(2*PI*ld(0)), 0));" \
52 "r(1-ld(1)) + b(ld(1))"
53 #define CSCHEME "1|0.5|0|0|0.5|1"
54 #define PTS_STEP 10
55 #define PTS_TOLERANCE 1
56
57 #define OFFSET(x) offsetof(ShowCQTContext, x)
58 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
59
60 static const AVOption showcqt_options[] = {
61 { "size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, { .str = "1920x1080" }, 0, 0, FLAGS },
62 { "s", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, { .str = "1920x1080" }, 0, 0, FLAGS },
63 { "fps", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
64 { "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
65 { "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
66 { "bar_h", "set bargraph height", OFFSET(bar_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
67 { "axis_h", "set axis height", OFFSET(axis_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
68 { "sono_h", "set sonogram height", OFFSET(sono_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
69 { "fullhd", "set fullhd size", OFFSET(fullhd), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
70 { "sono_v", "set sonogram volume", OFFSET(sono_v), AV_OPT_TYPE_STRING, { .str = "16" }, 0, 0, FLAGS },
71 { "volume", "set sonogram volume", OFFSET(sono_v), AV_OPT_TYPE_STRING, { .str = "16" }, 0, 0, FLAGS },
72 { "bar_v", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, 0, 0, FLAGS },
73 { "volume2", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, 0, 0, FLAGS },
74 { "sono_g", "set sonogram gamma", OFFSET(sono_g), AV_OPT_TYPE_FLOAT, { .dbl = 3.0 }, 1.0, 7.0, FLAGS },
75 { "gamma", "set sonogram gamma", OFFSET(sono_g), AV_OPT_TYPE_FLOAT, { .dbl = 3.0 }, 1.0, 7.0, FLAGS },
76 { "bar_g", "set bargraph gamma", OFFSET(bar_g), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 1.0, 7.0, FLAGS },
77 { "gamma2", "set bargraph gamma", OFFSET(bar_g), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 1.0, 7.0, FLAGS },
78 { "bar_t", "set bar transparency", OFFSET(bar_t), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 0.0, 1.0, FLAGS },
79 { "timeclamp", "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 }, 0.002, 1.0, FLAGS },
80 { "tc", "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 }, 0.002, 1.0, FLAGS },
81 { "attack", "set attack time", OFFSET(attack), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0.0, 1.0, FLAGS },
82 { "basefreq", "set base frequency", OFFSET(basefreq), AV_OPT_TYPE_DOUBLE, { .dbl = BASEFREQ }, 10.0, 100000.0, FLAGS },
83 { "endfreq", "set end frequency", OFFSET(endfreq), AV_OPT_TYPE_DOUBLE, { .dbl = ENDFREQ }, 10.0, 100000.0, FLAGS },
84 { "coeffclamp", "set coeffclamp", OFFSET(coeffclamp), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 0.1, 10.0, FLAGS },
85 { "tlength", "set tlength", OFFSET(tlength), AV_OPT_TYPE_STRING, { .str = TLENGTH }, 0, 0, FLAGS },
86 { "count", "set transform count", OFFSET(count), AV_OPT_TYPE_INT, { .i64 = 6 }, 1, 30, FLAGS },
87 { "fcount", "set frequency count", OFFSET(fcount), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 10, FLAGS },
88 { "fontfile", "set axis font file", OFFSET(fontfile), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
89 { "font", "set axis font", OFFSET(font), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
90 { "fontcolor", "set font color", OFFSET(fontcolor), AV_OPT_TYPE_STRING, { .str = FONTCOLOR }, 0, 0, FLAGS },
91 { "axisfile", "set axis image", OFFSET(axisfile), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
92 { "axis", "draw axis", OFFSET(axis), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
93 { "text", "draw axis", OFFSET(axis), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
94 { "csp", "set color space", OFFSET(csp), AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, INT_MAX, FLAGS, "csp" },
95 { "unspecified", "unspecified", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, 0, FLAGS, "csp" },
96 { "bt709", "bt709", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT709 }, 0, 0, FLAGS, "csp" },
97 { "fcc", "fcc", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_FCC }, 0, 0, FLAGS, "csp" },
98 { "bt470bg", "bt470bg", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "csp" },
99 { "smpte170m", "smpte170m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE170M }, 0, 0, FLAGS, "csp" },
100 { "smpte240m", "smpte240m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE240M }, 0, 0, FLAGS, "csp" },
101 { "bt2020ncl", "bt2020ncl", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT2020_NCL }, 0, 0, FLAGS, "csp" },
102 { "cscheme", "set color scheme", OFFSET(cscheme), AV_OPT_TYPE_STRING, { .str = CSCHEME }, 0, 0, FLAGS },
103 { NULL }
104 };
105
106 AVFILTER_DEFINE_CLASS(showcqt);
107
108 static void common_uninit(ShowCQTContext *s)
109 {
110 int k;
111 int level = AV_LOG_DEBUG;
112 int64_t plot_time;
113
114 if (s->fft_time)
115 av_log(s->ctx, level, "fft_time = %16.3f s.\n", s->fft_time * 1e-6);
116 if (s->cqt_time)
117 av_log(s->ctx, level, "cqt_time = %16.3f s.\n", s->cqt_time * 1e-6);
118 if (s->process_cqt_time)
119 av_log(s->ctx, level, "process_cqt_time = %16.3f s.\n", s->process_cqt_time * 1e-6);
120 if (s->update_sono_time)
121 av_log(s->ctx, level, "update_sono_time = %16.3f s.\n", s->update_sono_time * 1e-6);
122 if (s->alloc_time)
123 av_log(s->ctx, level, "alloc_time = %16.3f s.\n", s->alloc_time * 1e-6);
124 if (s->bar_time)
125 av_log(s->ctx, level, "bar_time = %16.3f s.\n", s->bar_time * 1e-6);
126 if (s->axis_time)
127 av_log(s->ctx, level, "axis_time = %16.3f s.\n", s->axis_time * 1e-6);
128 if (s->sono_time)
129 av_log(s->ctx, level, "sono_time = %16.3f s.\n", s->sono_time * 1e-6);
130
131 plot_time = s->fft_time + s->cqt_time + s->process_cqt_time + s->update_sono_time
132 + s->alloc_time + s->bar_time + s->axis_time + s->sono_time;
133 if (plot_time)
134 av_log(s->ctx, level, "plot_time = %16.3f s.\n", plot_time * 1e-6);
135
136 s->fft_time = s->cqt_time = s->process_cqt_time = s->update_sono_time
137 = s->alloc_time = s->bar_time = s->axis_time = s->sono_time = 0;
138 /* axis_frame may be non reference counted frame */
139 if (s->axis_frame && !s->axis_frame->buf[0]) {
140 av_freep(s->axis_frame->data);
141 for (k = 0; k < 4; k++)
142 s->axis_frame->data[k] = NULL;
143 }
144
145 av_frame_free(&s->axis_frame);
146 av_frame_free(&s->sono_frame);
147 av_tx_uninit(&s->fft_ctx);
148 if (s->coeffs)
149 for (k = 0; k < s->cqt_len; k++)
150 av_freep(&s->coeffs[k].val);
151 av_freep(&s->coeffs);
152 av_freep(&s->fft_data);
153 av_freep(&s->fft_input);
154 av_freep(&s->fft_result);
155 av_freep(&s->cqt_result);
156 av_freep(&s->attack_data);
157 av_freep(&s->c_buf);
158 av_freep(&s->h_buf);
159 av_freep(&s->rcp_h_buf);
160 av_freep(&s->freq);
161 av_freep(&s->sono_v_buf);
162 av_freep(&s->bar_v_buf);
163 }
164
165 static double *create_freq_table(double base, double end, int n)
166 {
167 double log_base, log_end;
168 double rcp_n = 1.0 / n;
169 double *freq;
170 int x;
171
172 freq = av_malloc_array(n, sizeof(*freq));
173 if (!freq)
174 return NULL;
175
176 log_base = log(base);
177 log_end = log(end);
178 for (x = 0; x < n; x++) {
179 double log_freq = log_base + (x + 0.5) * (log_end - log_base) * rcp_n;
180 freq[x] = exp(log_freq);
181 }
182 return freq;
183 }
184
185 static double clip_with_log(void *log_ctx, const char *name,
186 double val, double min, double max,
187 double nan_replace, int idx)
188 {
189 int level = AV_LOG_WARNING;
190 if (isnan(val)) {
191 av_log(log_ctx, level, "[%d] %s is nan, setting it to %g.\n",
192 idx, name, nan_replace);
193 val = nan_replace;
194 } else if (val < min) {
195 av_log(log_ctx, level, "[%d] %s is too low (%g), setting it to %g.\n",
196 idx, name, val, min);
197 val = min;
198 } else if (val > max) {
199 av_log(log_ctx, level, "[%d] %s it too high (%g), setting it to %g.\n",
200 idx, name, val, max);
201 val = max;
202 }
203 return val;
204 }
205
206 static double a_weighting(void *p, double f)
207 {
208 double ret = 12200.0*12200.0 * (f*f*f*f);
209 ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0) *
210 sqrt((f*f + 107.7*107.7) * (f*f + 737.9*737.9));
211 return ret;
212 }
213
214 static double b_weighting(void *p, double f)
215 {
216 double ret = 12200.0*12200.0 * (f*f*f);
217 ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0) * sqrt(f*f + 158.5*158.5);
218 return ret;
219 }
220
221 static double c_weighting(void *p, double f)
222 {
223 double ret = 12200.0*12200.0 * (f*f);
224 ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0);
225 return ret;
226 }
227
228 static int init_volume(ShowCQTContext *s)
229 {
230 const char *func_names[] = { "a_weighting", "b_weighting", "c_weighting", NULL };
231 const char *sono_names[] = { "timeclamp", "tc", "frequency", "freq", "f", "bar_v", NULL };
232 const char *bar_names[] = { "timeclamp", "tc", "frequency", "freq", "f", "sono_v", NULL };
233 double (*funcs[])(void *, double) = { a_weighting, b_weighting, c_weighting };
234 AVExpr *sono = NULL, *bar = NULL;
235 int x, ret = AVERROR(ENOMEM);
236
237 s->sono_v_buf = av_malloc_array(s->cqt_len, sizeof(*s->sono_v_buf));
238 s->bar_v_buf = av_malloc_array(s->cqt_len, sizeof(*s->bar_v_buf));
239 if (!s->sono_v_buf || !s->bar_v_buf)
240 goto error;
241
242 if ((ret = av_expr_parse(&sono, s->sono_v, sono_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0)
243 goto error;
244
245 if ((ret = av_expr_parse(&bar, s->bar_v, bar_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0)
246 goto error;
247
248 for (x = 0; x < s->cqt_len; x++) {
249 double vars[] = { s->timeclamp, s->timeclamp, s->freq[x], s->freq[x], s->freq[x], 0.0 };
250 double vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
251 vars[5] = vol;
252 vol = clip_with_log(s->ctx, "bar_v", av_expr_eval(bar, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
253 s->bar_v_buf[x] = vol * vol;
254 vars[5] = vol;
255 vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
256 s->sono_v_buf[x] = vol * vol;
257 }
258 av_expr_free(sono);
259 av_expr_free(bar);
260 return 0;
261
262 error:
263 av_freep(&s->sono_v_buf);
264 av_freep(&s->bar_v_buf);
265 av_expr_free(sono);
266 av_expr_free(bar);
267 return ret;
268 }
269
270 static void cqt_calc(AVComplexFloat *dst, const AVComplexFloat *src, const Coeffs *coeffs,
271 int len, int fft_len)
272 {
273 int k, x, i, j;
274 for (k = 0; k < len; k++) {
275 AVComplexFloat l, r, a = {0,0}, b = {0,0};
276
277 for (x = 0; x < coeffs[k].len; x++) {
278 float u = coeffs[k].val[x];
279 i = coeffs[k].start + x;
280 j = fft_len - i;
281 a.re += u * src[i].re;
282 a.im += u * src[i].im;
283 b.re += u * src[j].re;
284 b.im += u * src[j].im;
285 }
286
287 /* separate left and right, (and multiply by 2.0) */
288 l.re = a.re + b.re;
289 l.im = a.im - b.im;
290 r.re = b.im + a.im;
291 r.im = b.re - a.re;
292 dst[k].re = l.re * l.re + l.im * l.im;
293 dst[k].im = r.re * r.re + r.im * r.im;
294 }
295 }
296
297 static int init_cqt(ShowCQTContext *s)
298 {
299 const char *var_names[] = { "timeclamp", "tc", "frequency", "freq", "f", NULL };
300 AVExpr *expr = NULL;
301 int rate = s->ctx->inputs[0]->sample_rate;
302 int nb_cqt_coeffs = 0;
303 int k, x, ret;
304
305 if ((ret = av_expr_parse(&expr, s->tlength, var_names, NULL, NULL, NULL, NULL, 0, s->ctx)) < 0)
306 goto error;
307
308 ret = AVERROR(ENOMEM);
309 if (!(s->coeffs = av_calloc(s->cqt_len, sizeof(*s->coeffs))))
310 goto error;
311
312 for (k = 0; k < s->cqt_len; k++) {
313 double vars[] = { s->timeclamp, s->timeclamp, s->freq[k], s->freq[k], s->freq[k] };
314 double flen, center, tlength;
315 int start, end, m = k;
316
317 if (s->freq[k] > 0.5 * rate)
318 continue;
319 tlength = clip_with_log(s->ctx, "tlength", av_expr_eval(expr, vars, NULL),
320 TLENGTH_MIN, s->timeclamp, s->timeclamp, k);
321
322 flen = 8.0 * s->fft_len / (tlength * rate);
323 center = s->freq[k] * s->fft_len / rate;
324 start = FFMAX(0, ceil(center - 0.5 * flen));
325 end = FFMIN(s->fft_len, floor(center + 0.5 * flen));
326
327 s->coeffs[m].start = start & ~(s->cqt_align - 1);
328 s->coeffs[m].len = (end | (s->cqt_align - 1)) + 1 - s->coeffs[m].start;
329 nb_cqt_coeffs += s->coeffs[m].len;
330 if (!(s->coeffs[m].val = av_calloc(s->coeffs[m].len, sizeof(*s->coeffs[m].val))))
331 goto error;
332
333 for (x = start; x <= end; x++) {
334 int sign = (x & 1) ? (-1) : 1;
335 double y = 2.0 * M_PI * (x - center) * (1.0 / flen);
336 /* nuttall window */
337 double w = 0.355768 + 0.487396 * cos(y) + 0.144232 * cos(2*y) + 0.012604 * cos(3*y);
338 w *= sign * (1.0 / s->fft_len);
339 s->coeffs[m].val[x - s->coeffs[m].start] = w;
340 }
341
342 if (s->permute_coeffs)
343 s->permute_coeffs(s->coeffs[m].val, s->coeffs[m].len);
344 }
345
346 av_expr_free(expr);
347 av_log(s->ctx, AV_LOG_INFO, "nb_cqt_coeffs = %d.\n", nb_cqt_coeffs);
348 return 0;
349
350 error:
351 av_expr_free(expr);
352 if (s->coeffs)
353 for (k = 0; k < s->cqt_len; k++)
354 av_freep(&s->coeffs[k].val);
355 av_freep(&s->coeffs);
356 return ret;
357 }
358
359 static AVFrame *alloc_frame_empty(enum AVPixelFormat format, int w, int h)
360 {
361 AVFrame *out;
362 out = av_frame_alloc();
363 if (!out)
364 return NULL;
365 out->format = format;
366 out->width = w;
367 out->height = h;
368 if (av_frame_get_buffer(out, 0) < 0) {
369 av_frame_free(&out);
370 return NULL;
371 }
372 if (format == AV_PIX_FMT_RGB24 || format == AV_PIX_FMT_RGBA) {
373 memset(out->data[0], 0, out->linesize[0] * h);
374 } else {
375 int hh = (format == AV_PIX_FMT_YUV420P || format == AV_PIX_FMT_YUVA420P) ? h / 2 : h;
376 memset(out->data[0], 16, out->linesize[0] * h);
377 memset(out->data[1], 128, out->linesize[1] * hh);
378 memset(out->data[2], 128, out->linesize[2] * hh);
379 if (out->data[3])
380 memset(out->data[3], 0, out->linesize[3] * h);
381 }
382 return out;
383 }
384
385 static enum AVPixelFormat convert_axis_pixel_format(enum AVPixelFormat format)
386 {
387 switch (format) {
388 case AV_PIX_FMT_RGB24: format = AV_PIX_FMT_RGBA; break;
389 case AV_PIX_FMT_YUV444P:
390 case AV_PIX_FMT_YUV422P:
391 case AV_PIX_FMT_YUV420P: format = AV_PIX_FMT_YUVA444P; break;
392 }
393 return format;
394 }
395
396 static int init_axis_empty(ShowCQTContext *s)
397 {
398 if (!(s->axis_frame = alloc_frame_empty(convert_axis_pixel_format(s->format), s->width, s->axis_h)))
399 return AVERROR(ENOMEM);
400 return 0;
401 }
402
403 static int init_axis_from_file(ShowCQTContext *s)
404 {
405 uint8_t *tmp_data[4] = { NULL };
406 int tmp_linesize[4];
407 enum AVPixelFormat tmp_format;
408 int tmp_w, tmp_h, ret;
409
410 if ((ret = ff_load_image(tmp_data, tmp_linesize, &tmp_w, &tmp_h, &tmp_format,
411 s->axisfile, s->ctx)) < 0)
412 goto error;
413
414 ret = AVERROR(ENOMEM);
415 if (!(s->axis_frame = av_frame_alloc()))
416 goto error;
417
418 if ((ret = ff_scale_image(s->axis_frame->data, s->axis_frame->linesize, s->width, s->axis_h,
419 convert_axis_pixel_format(s->format), tmp_data, tmp_linesize, tmp_w, tmp_h,
420 tmp_format, s->ctx)) < 0)
421 goto error;
422
423 s->axis_frame->width = s->width;
424 s->axis_frame->height = s->axis_h;
425 s->axis_frame->format = convert_axis_pixel_format(s->format);
426 av_freep(tmp_data);
427 return 0;
428
429 error:
430 av_frame_free(&s->axis_frame);
431 av_freep(tmp_data);
432 return ret;
433 }
434
435 static double midi(void *p, double f)
436 {
437 return log2(f/440.0) * 12.0 + 69.0;
438 }
439
440 static double r_func(void *p, double x)
441 {
442 x = av_clipd(x, 0.0, 1.0);
443 return lrint(x*255.0) << 16;
444 }
445
446 static double g_func(void *p, double x)
447 {
448 x = av_clipd(x, 0.0, 1.0);
449 return lrint(x*255.0) << 8;
450 }
451
452 static double b_func(void *p, double x)
453 {
454 x = av_clipd(x, 0.0, 1.0);
455 return lrint(x*255.0);
456 }
457
458 static int init_axis_color(ShowCQTContext *s, AVFrame *tmp, int half)
459 {
460 const char *var_names[] = { "timeclamp", "tc", "frequency", "freq", "f", NULL };
461 const char *func_names[] = { "midi", "r", "g", "b", NULL };
462 double (*funcs[])(void *, double) = { midi, r_func, g_func, b_func };
463 AVExpr *expr = NULL;
464 double *freq = NULL;
465 int x, xs, y, ret;
466 int width = half ? 1920/2 : 1920, height = half ? 16 : 32;
467 int step = half ? 2 : 1;
468
469 if (s->basefreq != (double) BASEFREQ || s->endfreq != (double) ENDFREQ) {
470 av_log(s->ctx, AV_LOG_WARNING, "font axis rendering is not implemented in non-default frequency range,"
471 " please use axisfile option instead.\n");
472 return AVERROR(EINVAL);
473 }
474
475 if (s->cqt_len == 1920)
476 freq = s->freq;
477 else if (!(freq = create_freq_table(s->basefreq, s->endfreq, 1920)))
478 return AVERROR(ENOMEM);
479
480 if ((ret = av_expr_parse(&expr, s->fontcolor, var_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0) {
481 if (freq != s->freq)
482 av_freep(&freq);
483 return ret;
484 }
485
486 for (x = 0, xs = 0; x < width; x++, xs += step) {
487 double vars[] = { s->timeclamp, s->timeclamp, freq[xs], freq[xs], freq[xs] };
488 int color = (int) av_expr_eval(expr, vars, NULL);
489 uint8_t r = (color >> 16) & 0xFF, g = (color >> 8) & 0xFF, b = color & 0xFF;
490 uint8_t *data = tmp->data[0];
491 int linesize = tmp->linesize[0];
492 for (y = 0; y < height; y++) {
493 data[linesize * y + 4 * x] = r;
494 data[linesize * y + 4 * x + 1] = g;
495 data[linesize * y + 4 * x + 2] = b;
496 }
497 }
498
499 av_expr_free(expr);
500 if (freq != s->freq)
501 av_freep(&freq);
502 return 0;
503 }
504
505 static int render_freetype(ShowCQTContext *s, AVFrame *tmp, char *fontfile)
506 {
507 #if CONFIG_LIBFREETYPE
508 const char *str = "EF G A BC D ";
509 uint8_t *data = tmp->data[0];
510 int linesize = tmp->linesize[0];
511 FT_Library lib = NULL;
512 FT_Face face = NULL;
513 int font_width = 16, font_height = 32;
514 int font_repeat = font_width * 12;
515 int linear_hori_advance = font_width * 65536;
516 int non_monospace_warning = 0;
517 int x;
518
519 if (!fontfile)
520 return AVERROR(EINVAL);
521
522 if (FT_Init_FreeType(&lib))
523 goto fail;
524
525 if (FT_New_Face(lib, fontfile, 0, &face))
526 goto fail;
527
528 if (FT_Set_Char_Size(face, 16*64, 0, 0, 0))
529 goto fail;
530
531 if (FT_Load_Char(face, 'A', FT_LOAD_RENDER))
532 goto fail;
533
534 if (FT_Set_Char_Size(face, 16*64 * linear_hori_advance / face->glyph->linearHoriAdvance, 0, 0, 0))
535 goto fail;
536
537 for (x = 0; x < 12; x++) {
538 int sx, sy, rx, bx, by, dx, dy;
539
540 if (str[x] == ' ')
541 continue;
542
543 if (FT_Load_Char(face, str[x], FT_LOAD_RENDER))
544 goto fail;
545
546 if (face->glyph->advance.x != font_width*64 && !non_monospace_warning) {
547 av_log(s->ctx, AV_LOG_WARNING, "font is not monospace.\n");
548 non_monospace_warning = 1;
549 }
550
551 sy = font_height - 8 - face->glyph->bitmap_top;
552 for (rx = 0; rx < 10; rx++) {
553 sx = rx * font_repeat + x * font_width + face->glyph->bitmap_left;
554 for (by = 0; by < face->glyph->bitmap.rows; by++) {
555 dy = by + sy;
556 if (dy < 0)
557 continue;
558 if (dy >= font_height)
559 break;
560
561 for (bx = 0; bx < face->glyph->bitmap.width; bx++) {
562 dx = bx + sx;
563 if (dx < 0)
564 continue;
565 if (dx >= 1920)
566 break;
567 data[dy*linesize+4*dx+3] = face->glyph->bitmap.buffer[by*face->glyph->bitmap.width+bx];
568 }
569 }
570 }
571 }
572
573 FT_Done_Face(face);
574 FT_Done_FreeType(lib);
575 return 0;
576
577 fail:
578 av_log(s->ctx, AV_LOG_WARNING, "error while loading freetype font.\n");
579 FT_Done_Face(face);
580 FT_Done_FreeType(lib);
581 return AVERROR(EINVAL);
582 #else
583 if (fontfile)
584 av_log(s->ctx, AV_LOG_WARNING, "freetype is not available, ignoring fontfile option.\n");
585 return AVERROR(EINVAL);
586 #endif
587 }
588
589 static int render_fontconfig(ShowCQTContext *s, AVFrame *tmp, char* font)
590 {
591 #if CONFIG_LIBFONTCONFIG
592 FcConfig *fontconfig;
593 FcPattern *pat, *best;
594 FcResult result = FcResultMatch;
595 char *filename;
596 int i, ret;
597
598 if (!font)
599 return AVERROR(EINVAL);
600
601 for (i = 0; font[i]; i++) {
602 if (font[i] == '|')
603 font[i] = ':';
604 }
605
606 if (!(fontconfig = FcInitLoadConfigAndFonts())) {
607 av_log(s->ctx, AV_LOG_ERROR, "impossible to init fontconfig.\n");
608 return AVERROR_UNKNOWN;
609 }
610
611 if (!(pat = FcNameParse((uint8_t *)font))) {
612 av_log(s->ctx, AV_LOG_ERROR, "could not parse fontconfig pat.\n");
613 FcConfigDestroy(fontconfig);
614 return AVERROR(EINVAL);
615 }
616
617 FcDefaultSubstitute(pat);
618
619 if (!FcConfigSubstitute(fontconfig, pat, FcMatchPattern)) {
620 av_log(s->ctx, AV_LOG_ERROR, "could not substitue fontconfig options.\n");
621 FcPatternDestroy(pat);
622 FcConfigDestroy(fontconfig);
623 return AVERROR(ENOMEM);
624 }
625
626 best = FcFontMatch(fontconfig, pat, &result);
627 FcPatternDestroy(pat);
628
629 ret = AVERROR(EINVAL);
630 if (!best || result != FcResultMatch) {
631 av_log(s->ctx, AV_LOG_ERROR, "cannot find a valid font for %s.\n", font);
632 goto fail;
633 }
634
635 if (FcPatternGetString(best, FC_FILE, 0, (FcChar8 **)&filename) != FcResultMatch) {
636 av_log(s->ctx, AV_LOG_ERROR, "no file path for %s\n", font);
637 goto fail;
638 }
639
640 ret = render_freetype(s, tmp, filename);
641
642 fail:
643 FcPatternDestroy(best);
644 FcConfigDestroy(fontconfig);
645 return ret;
646 #else
647 if (font)
648 av_log(s->ctx, AV_LOG_WARNING, "fontconfig is not available, ignoring font option.\n");
649 return AVERROR(EINVAL);
650 #endif
651 }
652
653 static int render_default_font(AVFrame *tmp)
654 {
655 const char *str = "EF G A BC D ";
656 int x, u, v, mask;
657 uint8_t *data = tmp->data[0];
658 int linesize = tmp->linesize[0];
659 int width = 1920/2, height = 16;
660
661 for (x = 0; x < width; x += width/10) {
662 uint8_t *startptr = data + 4 * x;
663 for (u = 0; u < 12; u++) {
664 for (v = 0; v < height; v++) {
665 uint8_t *p = startptr + v * linesize + height/2 * 4 * u;
666 for (mask = 0x80; mask; mask >>= 1, p += 4) {
667 if (mask & avpriv_vga16_font[str[u] * 16 + v])
668 p[3] = 255;
669 else
670 p[3] = 0;
671 }
672 }
673 }
674 }
675
676 return 0;
677 }
678
679 static int init_axis_from_font(ShowCQTContext *s)
680 {
681 AVFrame *tmp = NULL;
682 int ret = AVERROR(ENOMEM);
683 int width = 1920, height = 32;
684 int default_font = 0;
685
686 if (!(tmp = alloc_frame_empty(AV_PIX_FMT_RGBA, width, height)))
687 goto fail;
688
689 if (!(s->axis_frame = av_frame_alloc()))
690 goto fail;
691
692 if (render_freetype(s, tmp, s->fontfile) < 0 &&
693 render_fontconfig(s, tmp, s->font) < 0 &&
694 (default_font = 1, ret = render_default_font(tmp)) < 0)
695 goto fail;
696
697 if (default_font)
698 width /= 2, height /= 2;
699
700 if ((ret = init_axis_color(s, tmp, default_font)) < 0)
701 goto fail;
702
703 if ((ret = ff_scale_image(s->axis_frame->data, s->axis_frame->linesize, s->width, s->axis_h,
704 convert_axis_pixel_format(s->format), tmp->data, tmp->linesize,
705 width, height, AV_PIX_FMT_RGBA, s->ctx)) < 0)
706 goto fail;
707
708 av_frame_free(&tmp);
709 s->axis_frame->width = s->width;
710 s->axis_frame->height = s->axis_h;
711 s->axis_frame->format = convert_axis_pixel_format(s->format);
712 return 0;
713
714 fail:
715 av_frame_free(&tmp);
716 av_frame_free(&s->axis_frame);
717 return ret;
718 }
719
720 static float calculate_gamma(float v, float g)
721 {
722 if (g == 1.0f)
723 return v;
724 if (g == 2.0f)
725 return sqrtf(v);
726 if (g == 3.0f)
727 return cbrtf(v);
728 if (g == 4.0f)
729 return sqrtf(sqrtf(v));
730 return expf(logf(v) / g);
731 }
732
733 static void rgb_from_cqt(ColorFloat *c, const AVComplexFloat *v, float g, int len, float cscheme[6])
734 {
735 int x;
736 for (x = 0; x < len; x++) {
737 c[x].rgb.r = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[0] * v[x].re + cscheme[3] * v[x].im), g);
738 c[x].rgb.g = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[1] * v[x].re + cscheme[4] * v[x].im), g);
739 c[x].rgb.b = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[2] * v[x].re + cscheme[5] * v[x].im), g);
740 }
741 }
742
743 static void yuv_from_cqt(ColorFloat *c, const AVComplexFloat *v, float gamma, int len, float cm[3][3], float cscheme[6])
744 {
745 int x;
746 for (x = 0; x < len; x++) {
747 float r, g, b;
748 r = calculate_gamma(FFMIN(1.0f, cscheme[0] * v[x].re + cscheme[3] * v[x].im), gamma);
749 g = calculate_gamma(FFMIN(1.0f, cscheme[1] * v[x].re + cscheme[4] * v[x].im), gamma);
750 b = calculate_gamma(FFMIN(1.0f, cscheme[2] * v[x].re + cscheme[5] * v[x].im), gamma);
751 c[x].yuv.y = cm[0][0] * r + cm[0][1] * g + cm[0][2] * b;
752 c[x].yuv.u = cm[1][0] * r + cm[1][1] * g + cm[1][2] * b;
753 c[x].yuv.v = cm[2][0] * r + cm[2][1] * g + cm[2][2] * b;
754 }
755 }
756
757 static void draw_bar_rgb(AVFrame *out, const float *h, const float *rcp_h,
758 const ColorFloat *c, int bar_h, float bar_t)
759 {
760 int x, y, w = out->width;
761 float mul, ht, rcp_bar_h = 1.0f / bar_h, rcp_bar_t = 1.0f / bar_t;
762 uint8_t *v = out->data[0], *lp;
763 int ls = out->linesize[0];
764
765 for (y = 0; y < bar_h; y++) {
766 ht = (bar_h - y) * rcp_bar_h;
767 lp = v + y * ls;
768 for (x = 0; x < w; x++) {
769 if (h[x] <= ht) {
770 *lp++ = 0;
771 *lp++ = 0;
772 *lp++ = 0;
773 } else {
774 mul = (h[x] - ht) * rcp_h[x];
775 mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f;
776 *lp++ = lrintf(mul * c[x].rgb.r);
777 *lp++ = lrintf(mul * c[x].rgb.g);
778 *lp++ = lrintf(mul * c[x].rgb.b);
779 }
780 }
781 }
782 }
783
784 #define DRAW_BAR_WITH_CHROMA(x) \
785 do { \
786 if (h[x] <= ht) { \
787 *lpy++ = 16; \
788 *lpu++ = 128; \
789 *lpv++ = 128; \
790 } else { \
791 mul = (h[x] - ht) * rcp_h[x]; \
792 mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
793 *lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
794 *lpu++ = lrintf(mul * c[x].yuv.u + 128.0f); \
795 *lpv++ = lrintf(mul * c[x].yuv.v + 128.0f); \
796 } \
797 } while (0)
798
799 #define DRAW_BAR_WITHOUT_CHROMA(x) \
800 do { \
801 if (h[x] <= ht) { \
802 *lpy++ = 16; \
803 } else { \
804 mul = (h[x] - ht) * rcp_h[x]; \
805 mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
806 *lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
807 } \
808 } while (0)
809
810 static void draw_bar_yuv(AVFrame *out, const float *h, const float *rcp_h,
811 const ColorFloat *c, int bar_h, float bar_t)
812 {
813 int x, y, yh, w = out->width;
814 float mul, ht, rcp_bar_h = 1.0f / bar_h, rcp_bar_t = 1.0f / bar_t;
815 uint8_t *vy = out->data[0], *vu = out->data[1], *vv = out->data[2];
816 uint8_t *lpy, *lpu, *lpv;
817 int lsy = out->linesize[0], lsu = out->linesize[1], lsv = out->linesize[2];
818 int fmt = out->format;
819
820 for (y = 0; y < bar_h; y += 2) {
821 yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
822 ht = (bar_h - y) * rcp_bar_h;
823 lpy = vy + y * lsy;
824 lpu = vu + yh * lsu;
825 lpv = vv + yh * lsv;
826 if (fmt == AV_PIX_FMT_YUV444P) {
827 for (x = 0; x < w; x += 2) {
828 DRAW_BAR_WITH_CHROMA(x);
829 DRAW_BAR_WITH_CHROMA(x+1);
830 }
831 } else {
832 for (x = 0; x < w; x += 2) {
833 DRAW_BAR_WITH_CHROMA(x);
834 DRAW_BAR_WITHOUT_CHROMA(x+1);
835 }
836 }
837
838 ht = (bar_h - (y+1)) * rcp_bar_h;
839 lpy = vy + (y+1) * lsy;
840 lpu = vu + (y+1) * lsu;
841 lpv = vv + (y+1) * lsv;
842 if (fmt == AV_PIX_FMT_YUV444P) {
843 for (x = 0; x < w; x += 2) {
844 DRAW_BAR_WITH_CHROMA(x);
845 DRAW_BAR_WITH_CHROMA(x+1);
846 }
847 } else if (fmt == AV_PIX_FMT_YUV422P) {
848 for (x = 0; x < w; x += 2) {
849 DRAW_BAR_WITH_CHROMA(x);
850 DRAW_BAR_WITHOUT_CHROMA(x+1);
851 }
852 } else {
853 for (x = 0; x < w; x += 2) {
854 DRAW_BAR_WITHOUT_CHROMA(x);
855 DRAW_BAR_WITHOUT_CHROMA(x+1);
856 }
857 }
858 }
859 }
860
861 static void draw_axis_rgb(AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
862 {
863 int x, y, w = axis->width, h = axis->height;
864 float a, rcp_255 = 1.0f / 255.0f;
865 uint8_t *lp, *lpa;
866
867 for (y = 0; y < h; y++) {
868 lp = out->data[0] + (off + y) * out->linesize[0];
869 lpa = axis->data[0] + y * axis->linesize[0];
870 for (x = 0; x < w; x++) {
871 if (!lpa[3]) {
872 *lp++ = lrintf(c[x].rgb.r);
873 *lp++ = lrintf(c[x].rgb.g);
874 *lp++ = lrintf(c[x].rgb.b);
875 } else if (lpa[3] == 255) {
876 *lp++ = lpa[0];
877 *lp++ = lpa[1];
878 *lp++ = lpa[2];
879 } else {
880 a = rcp_255 * lpa[3];
881 *lp++ = lrintf(a * lpa[0] + (1.0f - a) * c[x].rgb.r);
882 *lp++ = lrintf(a * lpa[1] + (1.0f - a) * c[x].rgb.g);
883 *lp++ = lrintf(a * lpa[2] + (1.0f - a) * c[x].rgb.b);
884 }
885 lpa += 4;
886 }
887 }
888 }
889
890 #define BLEND_WITH_CHROMA(c) \
891 do { \
892 if (!*lpaa) { \
893 *lpy = lrintf(c.yuv.y + 16.0f); \
894 *lpu = lrintf(c.yuv.u + 128.0f); \
895 *lpv = lrintf(c.yuv.v + 128.0f); \
896 } else if (255 == *lpaa) { \
897 *lpy = *lpay; \
898 *lpu = *lpau; \
899 *lpv = *lpav; \
900 } else { \
901 float a = (1.0f/255.0f) * (*lpaa); \
902 *lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
903 *lpu = lrintf(a * (*lpau) + (1.0f - a) * (c.yuv.u + 128.0f)); \
904 *lpv = lrintf(a * (*lpav) + (1.0f - a) * (c.yuv.v + 128.0f)); \
905 } \
906 lpy++; lpu++; lpv++; \
907 lpay++; lpau++; lpav++; lpaa++; \
908 } while (0)
909
910 #define BLEND_WITHOUT_CHROMA(c, alpha_inc) \
911 do { \
912 if (!*lpaa) { \
913 *lpy = lrintf(c.yuv.y + 16.0f); \
914 } else if (255 == *lpaa) { \
915 *lpy = *lpay; \
916 } else { \
917 float a = (1.0f/255.0f) * (*lpaa); \
918 *lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
919 } \
920 lpy++; \
921 lpay++; lpaa += alpha_inc; \
922 } while (0)
923
924 #define BLEND_CHROMA2(c) \
925 do { \
926 if (!lpaa[0] && !lpaa[1]) { \
927 *lpu = lrintf(c.yuv.u + 128.0f); \
928 *lpv = lrintf(c.yuv.v + 128.0f); \
929 } else if (255 == lpaa[0] && 255 == lpaa[1]) { \
930 *lpu = *lpau; *lpv = *lpav; \
931 } else { \
932 float a0 = (0.5f/255.0f) * lpaa[0]; \
933 float a1 = (0.5f/255.0f) * lpaa[1]; \
934 float b = 1.0f - a0 - a1; \
935 *lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + b * (c.yuv.u + 128.0f)); \
936 *lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + b * (c.yuv.v + 128.0f)); \
937 } \
938 lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
939 } while (0)
940
941 #define BLEND_CHROMA2x2(c) \
942 do { \
943 if (!lpaa[0] && !lpaa[1] && !lpaa[lsaa] && !lpaa[lsaa+1]) { \
944 *lpu = lrintf(c.yuv.u + 128.0f); \
945 *lpv = lrintf(c.yuv.v + 128.0f); \
946 } else if (255 == lpaa[0] && 255 == lpaa[1] && \
947 255 == lpaa[lsaa] && 255 == lpaa[lsaa+1]) { \
948 *lpu = *lpau; *lpv = *lpav; \
949 } else { \
950 float a0 = (0.25f/255.0f) * lpaa[0]; \
951 float a1 = (0.25f/255.0f) * lpaa[1]; \
952 float a2 = (0.25f/255.0f) * lpaa[lsaa]; \
953 float a3 = (0.25f/255.0f) * lpaa[lsaa+1]; \
954 float b = 1.0f - a0 - a1 - a2 - a3; \
955 *lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + a2 * lpau[lsau] + a3 * lpau[lsau+1] \
956 + b * (c.yuv.u + 128.0f)); \
957 *lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + a2 * lpav[lsav] + a3 * lpav[lsav+1] \
958 + b * (c.yuv.v + 128.0f)); \
959 } \
960 lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
961 } while (0)
962
963 static void draw_axis_yuv(AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
964 {
965 int fmt = out->format, x, y, yh, w = axis->width, h = axis->height;
966 int offh = (fmt == AV_PIX_FMT_YUV420P) ? off / 2 : off;
967 uint8_t *vy = out->data[0], *vu = out->data[1], *vv = out->data[2];
968 uint8_t *vay = axis->data[0], *vau = axis->data[1], *vav = axis->data[2], *vaa = axis->data[3];
969 int lsy = out->linesize[0], lsu = out->linesize[1], lsv = out->linesize[2];
970 int lsay = axis->linesize[0], lsau = axis->linesize[1], lsav = axis->linesize[2], lsaa = axis->linesize[3];
971 uint8_t *lpy, *lpu, *lpv, *lpay, *lpau, *lpav, *lpaa;
972
973 for (y = 0; y < h; y += 2) {
974 yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
975 lpy = vy + (off + y) * lsy;
976 lpu = vu + (offh + yh) * lsu;
977 lpv = vv + (offh + yh) * lsv;
978 lpay = vay + y * lsay;
979 lpau = vau + y * lsau;
980 lpav = vav + y * lsav;
981 lpaa = vaa + y * lsaa;
982 if (fmt == AV_PIX_FMT_YUV444P) {
983 for (x = 0; x < w; x += 2) {
984 BLEND_WITH_CHROMA(c[x]);
985 BLEND_WITH_CHROMA(c[x+1]);
986 }
987 } else if (fmt == AV_PIX_FMT_YUV422P) {
988 for (x = 0; x < w; x += 2) {
989 BLEND_WITHOUT_CHROMA(c[x], 0);
990 BLEND_CHROMA2(c[x]);
991 BLEND_WITHOUT_CHROMA(c[x+1], 1);
992 }
993 } else {
994 for (x = 0; x < w; x += 2) {
995 BLEND_WITHOUT_CHROMA(c[x], 0);
996 BLEND_CHROMA2x2(c[x]);
997 BLEND_WITHOUT_CHROMA(c[x+1], 1);
998 }
999 }
1000
1001 lpy = vy + (off + y + 1) * lsy;
1002 lpu = vu + (off + y + 1) * lsu;
1003 lpv = vv + (off + y + 1) * lsv;
1004 lpay = vay + (y + 1) * lsay;
1005 lpau = vau + (y + 1) * lsau;
1006 lpav = vav + (y + 1) * lsav;
1007 lpaa = vaa + (y + 1) * lsaa;
1008 if (fmt == AV_PIX_FMT_YUV444P) {
1009 for (x = 0; x < w; x += 2) {
1010 BLEND_WITH_CHROMA(c[x]);
1011 BLEND_WITH_CHROMA(c[x+1]);
1012 }
1013 } else if (fmt == AV_PIX_FMT_YUV422P) {
1014 for (x = 0; x < w; x += 2) {
1015 BLEND_WITHOUT_CHROMA(c[x], 0);
1016 BLEND_CHROMA2(c[x]);
1017 BLEND_WITHOUT_CHROMA(c[x+1], 1);
1018 }
1019 } else {
1020 for (x = 0; x < w; x += 2) {
1021 BLEND_WITHOUT_CHROMA(c[x], 1);
1022 BLEND_WITHOUT_CHROMA(c[x+1], 1);
1023 }
1024 }
1025 }
1026 }
1027
1028 static void draw_sono(AVFrame *out, AVFrame *sono, int off, int idx)
1029 {
1030 int fmt = out->format, h = sono->height;
1031 int nb_planes = (fmt == AV_PIX_FMT_RGB24) ? 1 : 3;
1032 int offh = (fmt == AV_PIX_FMT_YUV420P) ? off / 2 : off;
1033 int inc = (fmt == AV_PIX_FMT_YUV420P) ? 2 : 1;
1034 ptrdiff_t ls;
1035 int i, y, yh;
1036
1037 ls = FFABS(FFMIN(out->linesize[0], sono->linesize[0]));
1038 for (y = 0; y < h; y++) {
1039 memcpy(out->data[0] + (off + y) * out->linesize[0],
1040 sono->data[0] + (idx + y) % h * sono->linesize[0], ls);
1041 }
1042
1043 for (i = 1; i < nb_planes; i++) {
1044 ls = FFABS(FFMIN(out->linesize[i], sono->linesize[i]));
1045 for (y = 0; y < h; y += inc) {
1046 yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
1047 memcpy(out->data[i] + (offh + yh) * out->linesize[i],
1048 sono->data[i] + (idx + y) % h * sono->linesize[i], ls);
1049 }
1050 }
1051 }
1052
1053 static void update_sono_rgb(AVFrame *sono, const ColorFloat *c, int idx)
1054 {
1055 int x, w = sono->width;
1056 uint8_t *lp = sono->data[0] + idx * sono->linesize[0];
1057
1058 for (x = 0; x < w; x++) {
1059 *lp++ = lrintf(c[x].rgb.r);
1060 *lp++ = lrintf(c[x].rgb.g);
1061 *lp++ = lrintf(c[x].rgb.b);
1062 }
1063 }
1064
1065 static void update_sono_yuv(AVFrame *sono, const ColorFloat *c, int idx)
1066 {
1067 int x, fmt = sono->format, w = sono->width;
1068 uint8_t *lpy = sono->data[0] + idx * sono->linesize[0];
1069 uint8_t *lpu = sono->data[1] + idx * sono->linesize[1];
1070 uint8_t *lpv = sono->data[2] + idx * sono->linesize[2];
1071
1072 for (x = 0; x < w; x += 2) {
1073 *lpy++ = lrintf(c[x].yuv.y + 16.0f);
1074 *lpu++ = lrintf(c[x].yuv.u + 128.0f);
1075 *lpv++ = lrintf(c[x].yuv.v + 128.0f);
1076 *lpy++ = lrintf(c[x+1].yuv.y + 16.0f);
1077 if (fmt == AV_PIX_FMT_YUV444P) {
1078 *lpu++ = lrintf(c[x+1].yuv.u + 128.0f);
1079 *lpv++ = lrintf(c[x+1].yuv.v + 128.0f);
1080 }
1081 }
1082 }
1083
1084 static void process_cqt(ShowCQTContext *s)
1085 {
1086 int x, i;
1087 if (!s->sono_count) {
1088 for (x = 0; x < s->cqt_len; x++) {
1089 s->h_buf[x] = s->bar_v_buf[x] * 0.5f * (s->cqt_result[x].re + s->cqt_result[x].im);
1090 }
1091 if (s->fcount > 1) {
1092 float rcp_fcount = 1.0f / s->fcount;
1093 for (x = 0; x < s->width; x++) {
1094 float h = 0.0f;
1095 for (i = 0; i < s->fcount; i++)
1096 h += s->h_buf[s->fcount * x + i];
1097 s->h_buf[x] = rcp_fcount * h;
1098 }
1099 }
1100 for (x = 0; x < s->width; x++) {
1101 s->h_buf[x] = calculate_gamma(s->h_buf[x], s->bar_g);
1102 s->rcp_h_buf[x] = 1.0f / (s->h_buf[x] + 0.0001f);
1103 }
1104 }
1105
1106 for (x = 0; x < s->cqt_len; x++) {
1107 s->cqt_result[x].re *= s->sono_v_buf[x];
1108 s->cqt_result[x].im *= s->sono_v_buf[x];
1109 }
1110
1111 if (s->fcount > 1) {
1112 float rcp_fcount = 1.0f / s->fcount;
1113 for (x = 0; x < s->width; x++) {
1114 AVComplexFloat result = {0.0f, 0.0f};
1115 for (i = 0; i < s->fcount; i++) {
1116 result.re += s->cqt_result[s->fcount * x + i].re;
1117 result.im += s->cqt_result[s->fcount * x + i].im;
1118 }
1119 s->cqt_result[x].re = rcp_fcount * result.re;
1120 s->cqt_result[x].im = rcp_fcount * result.im;
1121 }
1122 }
1123
1124 if (s->format == AV_PIX_FMT_RGB24)
1125 rgb_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width, s->cscheme_v);
1126 else
1127 yuv_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width, s->cmatrix, s->cscheme_v);
1128 }
1129
1130 static int plot_cqt(AVFilterContext *ctx, AVFrame **frameout)
1131 {
1132 AVFilterLink *outlink = ctx->outputs[0];
1133 ShowCQTContext *s = ctx->priv;
1134 int64_t last_time, cur_time;
1135
1136 #define UPDATE_TIME(t) \
1137 cur_time = av_gettime_relative(); \
1138 t += cur_time - last_time; \
1139 last_time = cur_time
1140
1141 last_time = av_gettime_relative();
1142
1143 memcpy(s->fft_input, s->fft_data, s->fft_len * sizeof(*s->fft_data));
1144 if (s->attack_data) {
1145 int k;
1146 for (k = 0; k < s->remaining_fill_max; k++) {
1147 s->fft_input[s->fft_len/2+k].re *= s->attack_data[k];
1148 s->fft_input[s->fft_len/2+k].im *= s->attack_data[k];
1149 }
1150 }
1151
1152 s->tx_fn(s->fft_ctx, s->fft_result, s->fft_input, sizeof(AVComplexFloat));
1153 UPDATE_TIME(s->fft_time);
1154
1155 s->cqt_calc(s->cqt_result, s->fft_result, s->coeffs, s->cqt_len, s->fft_len);
1156 UPDATE_TIME(s->cqt_time);
1157
1158 process_cqt(s);
1159 UPDATE_TIME(s->process_cqt_time);
1160
1161 if (s->sono_h) {
1162 s->update_sono(s->sono_frame, s->c_buf, s->sono_idx);
1163 UPDATE_TIME(s->update_sono_time);
1164 }
1165
1166 if (!s->sono_count) {
1167 AVFrame *out = *frameout = ff_get_video_buffer(outlink, outlink->w, outlink->h);
1168 if (!out)
1169 return AVERROR(ENOMEM);
1170 out->sample_aspect_ratio = av_make_q(1, 1);
1171 out->color_range = AVCOL_RANGE_MPEG;
1172 out->colorspace = s->csp;
1173 UPDATE_TIME(s->alloc_time);
1174
1175 if (s->bar_h) {
1176 s->draw_bar(out, s->h_buf, s->rcp_h_buf, s->c_buf, s->bar_h, s->bar_t);
1177 UPDATE_TIME(s->bar_time);
1178 }
1179
1180 if (s->axis_h) {
1181 s->draw_axis(out, s->axis_frame, s->c_buf, s->bar_h);
1182 UPDATE_TIME(s->axis_time);
1183 }
1184
1185 if (s->sono_h) {
1186 s->draw_sono(out, s->sono_frame, s->bar_h + s->axis_h, s->sono_idx);
1187 UPDATE_TIME(s->sono_time);
1188 }
1189 out->pts = s->next_pts;
1190 out->duration = PTS_STEP;
1191 s->next_pts += PTS_STEP;
1192 }
1193 s->sono_count = (s->sono_count + 1) % s->count;
1194 if (s->sono_h)
1195 s->sono_idx = (s->sono_idx + s->sono_h - 1) % s->sono_h;
1196 return 0;
1197 }
1198
1199 static void init_colormatrix(ShowCQTContext *s)
1200 {
1201 double kr, kg, kb;
1202
1203 /* from vf_colorspace.c */
1204 switch (s->csp) {
1205 default:
1206 av_log(s->ctx, AV_LOG_WARNING, "unsupported colorspace, setting it to unspecified.\n");
1207 s->csp = AVCOL_SPC_UNSPECIFIED;
1208 case AVCOL_SPC_UNSPECIFIED:
1209 case AVCOL_SPC_BT470BG:
1210 case AVCOL_SPC_SMPTE170M:
1211 kr = 0.299; kb = 0.114; break;
1212 case AVCOL_SPC_BT709:
1213 kr = 0.2126; kb = 0.0722; break;
1214 case AVCOL_SPC_FCC:
1215 kr = 0.30; kb = 0.11; break;
1216 case AVCOL_SPC_SMPTE240M:
1217 kr = 0.212; kb = 0.087; break;
1218 case AVCOL_SPC_BT2020_NCL:
1219 kr = 0.2627; kb = 0.0593; break;
1220 }
1221
1222 kg = 1.0 - kr - kb;
1223 s->cmatrix[0][0] = 219.0 * kr;
1224 s->cmatrix[0][1] = 219.0 * kg;
1225 s->cmatrix[0][2] = 219.0 * kb;
1226 s->cmatrix[1][0] = -112.0 * kr / (1.0 - kb);
1227 s->cmatrix[1][1] = -112.0 * kg / (1.0 - kb);
1228 s->cmatrix[1][2] = 112.0;
1229 s->cmatrix[2][0] = 112.0;
1230 s->cmatrix[2][1] = -112.0 * kg / (1.0 - kr);
1231 s->cmatrix[2][2] = -112.0 * kb / (1.0 - kr);
1232 }
1233
1234 static int init_cscheme(ShowCQTContext *s)
1235 {
1236 char tail[2];
1237 int k;
1238
1239 if (sscanf(s->cscheme, " %f | %f | %f | %f | %f | %f %1s", &s->cscheme_v[0],
1240 &s->cscheme_v[1], &s->cscheme_v[2], &s->cscheme_v[3], &s->cscheme_v[4],
1241 &s->cscheme_v[5], tail) != 6)
1242 goto fail;
1243
1244 for (k = 0; k < 6; k++)
1245 if (isnan(s->cscheme_v[k]) || s->cscheme_v[k] < 0.0f || s->cscheme_v[k] > 1.0f)
1246 goto fail;
1247
1248 return 0;
1249
1250 fail:
1251 av_log(s->ctx, AV_LOG_ERROR, "invalid cscheme.\n");
1252 return AVERROR(EINVAL);
1253 }
1254
1255 /* main filter control */
1256 static av_cold int init(AVFilterContext *ctx)
1257 {
1258 ShowCQTContext *s = ctx->priv;
1259 s->ctx = ctx;
1260
1261 if (!s->fullhd) {
1262 av_log(ctx, AV_LOG_WARNING, "fullhd option is deprecated, use size/s option instead.\n");
1263 if (s->width != 1920 || s->height != 1080) {
1264 av_log(ctx, AV_LOG_ERROR, "fullhd set to 0 but with custom dimension.\n");
1265 return AVERROR(EINVAL);
1266 }
1267 s->width /= 2;
1268 s->height /= 2;
1269 s->fullhd = 1;
1270 }
1271
1272 if (s->axis_h < 0) {
1273 s->axis_h = s->width / 60;
1274 if (s->axis_h & 1)
1275 s->axis_h++;
1276 if (s->bar_h >= 0 && s->sono_h >= 0)
1277 s->axis_h = s->height - s->bar_h - s->sono_h;
1278 if (s->bar_h >= 0 && s->sono_h < 0)
1279 s->axis_h = FFMIN(s->axis_h, s->height - s->bar_h);
1280 if (s->bar_h < 0 && s->sono_h >= 0)
1281 s->axis_h = FFMIN(s->axis_h, s->height - s->sono_h);
1282 }
1283
1284 if (s->bar_h < 0) {
1285 s->bar_h = (s->height - s->axis_h) / 2;
1286 if (s->bar_h & 1)
1287 s->bar_h--;
1288 if (s->sono_h >= 0)
1289 s->bar_h = s->height - s->sono_h - s->axis_h;
1290 }
1291
1292 if (s->sono_h < 0)
1293 s->sono_h = s->height - s->axis_h - s->bar_h;
1294
1295 if ((s->width & 1) || (s->height & 1) || (s->bar_h & 1) || (s->axis_h & 1) || (s->sono_h & 1) ||
1296 (s->bar_h < 0) || (s->axis_h < 0) || (s->sono_h < 0) || (s->bar_h > s->height) ||
1297 (s->axis_h > s->height) || (s->sono_h > s->height) || (s->bar_h + s->axis_h + s->sono_h != s->height)) {
1298 av_log(ctx, AV_LOG_ERROR, "invalid dimension.\n");
1299 return AVERROR(EINVAL);
1300 }
1301
1302 if (!s->fcount) {
1303 do {
1304 s->fcount++;
1305 } while(s->fcount * s->width < 1920 && s->fcount < 10);
1306 }
1307
1308 init_colormatrix(s);
1309
1310 return init_cscheme(s);
1311 }
1312
1313 static av_cold void uninit(AVFilterContext *ctx)
1314 {
1315 common_uninit(ctx->priv);
1316 }
1317
1318 static int query_formats(AVFilterContext *ctx)
1319 {
1320 AVFilterFormats *formats = NULL;
1321 AVFilterChannelLayouts *layouts = NULL;
1322 AVFilterLink *inlink = ctx->inputs[0];
1323 AVFilterLink *outlink = ctx->outputs[0];
1324 static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
1325 static const enum AVPixelFormat pix_fmts[] = {
1326 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
1327 AV_PIX_FMT_YUV444P, AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
1328 };
1329 static const AVChannelLayout channel_layouts[] = { AV_CHANNEL_LAYOUT_STEREO,
1330 AV_CHANNEL_LAYOUT_STEREO_DOWNMIX, { 0 } };
1331 int ret;
1332
1333 /* set input audio formats */
1334 formats = ff_make_format_list(sample_fmts);
1335 if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
1336 return ret;
1337
1338 layouts = ff_make_channel_layout_list(channel_layouts);
1339 if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
1340 return ret;
1341
1342 formats = ff_all_samplerates();
1343 if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
1344 return ret;
1345
1346 /* set output video format */
1347 formats = ff_make_format_list(pix_fmts);
1348 if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
1349 return ret;
1350
1351 return 0;
1352 }
1353
1354 static int config_output(AVFilterLink *outlink)
1355 {
1356 AVFilterContext *ctx = outlink->src;
1357 AVFilterLink *inlink = ctx->inputs[0];
1358 ShowCQTContext *s = ctx->priv;
1359 float scale = 1.f;
1360 int ret;
1361
1362 common_uninit(s);
1363
1364 outlink->w = s->width;
1365 outlink->h = s->height;
1366 s->format = outlink->format;
1367 outlink->sample_aspect_ratio = av_make_q(1, 1);
1368 outlink->frame_rate = s->rate;
1369 outlink->time_base = av_mul_q(av_inv_q(s->rate), av_make_q(1, PTS_STEP));
1370 av_log(ctx, AV_LOG_INFO, "video: %dx%d %s %d/%d fps, bar_h = %d, axis_h = %d, sono_h = %d.\n",
1371 s->width, s->height, av_get_pix_fmt_name(s->format), s->rate.num, s->rate.den,
1372 s->bar_h, s->axis_h, s->sono_h);
1373
1374 s->cqt_len = s->width * s->fcount;
1375 if (!(s->freq = create_freq_table(s->basefreq, s->endfreq, s->cqt_len)))
1376 return AVERROR(ENOMEM);
1377
1378 if ((ret = init_volume(s)) < 0)
1379 return ret;
1380
1381 s->fft_bits = FFMAX(ceil(log2(inlink->sample_rate * s->timeclamp)), 4);
1382 s->fft_len = 1 << s->fft_bits;
1383 av_log(ctx, AV_LOG_INFO, "fft_len = %d, cqt_len = %d.\n", s->fft_len, s->cqt_len);
1384
1385 ret = av_tx_init(&s->fft_ctx, &s->tx_fn, AV_TX_FLOAT_FFT, 0, s->fft_len, &scale, 0);
1386 s->fft_data = av_calloc(s->fft_len, sizeof(*s->fft_data));
1387 s->fft_input = av_calloc(FFALIGN(s->fft_len + 64, 256), sizeof(*s->fft_input));
1388 s->fft_result = av_calloc(FFALIGN(s->fft_len + 64, 256), sizeof(*s->fft_result));
1389 s->cqt_result = av_malloc_array(s->cqt_len, sizeof(*s->cqt_result));
1390 if (!s->fft_ctx || !s->fft_data || !s->fft_result || !s->cqt_result)
1391 return AVERROR(ENOMEM);
1392
1393 s->remaining_fill_max = s->fft_len / 2;
1394 if (s->attack > 0.0) {
1395 int k;
1396
1397 s->remaining_fill_max = FFMIN(s->remaining_fill_max, ceil(inlink->sample_rate * s->attack));
1398 s->attack_data = av_malloc_array(s->remaining_fill_max, sizeof(*s->attack_data));
1399 if (!s->attack_data)
1400 return AVERROR(ENOMEM);
1401
1402 for (k = 0; k < s->remaining_fill_max; k++) {
1403 double y = M_PI * k / (inlink->sample_rate * s->attack);
1404 s->attack_data[k] = 0.355768 + 0.487396 * cos(y) + 0.144232 * cos(2*y) + 0.012604 * cos(3*y);
1405 }
1406 }
1407
1408 s->cqt_align = 1;
1409 s->cqt_calc = cqt_calc;
1410 s->permute_coeffs = NULL;
1411 s->draw_sono = draw_sono;
1412 if (s->format == AV_PIX_FMT_RGB24) {
1413 s->draw_bar = draw_bar_rgb;
1414 s->draw_axis = draw_axis_rgb;
1415 s->update_sono = update_sono_rgb;
1416 } else {
1417 s->draw_bar = draw_bar_yuv;
1418 s->draw_axis = draw_axis_yuv;
1419 s->update_sono = update_sono_yuv;
1420 }
1421
1422 #if ARCH_X86
1423 ff_showcqt_init_x86(s);
1424 #endif
1425
1426 if ((ret = init_cqt(s)) < 0)
1427 return ret;
1428
1429 if (s->axis_h) {
1430 if (!s->axis) {
1431 if ((ret = init_axis_empty(s)) < 0)
1432 return ret;
1433 } else if (s->axisfile) {
1434 if (init_axis_from_file(s) < 0) {
1435 av_log(ctx, AV_LOG_WARNING, "loading axis image failed, fallback to font rendering.\n");
1436 if (init_axis_from_font(s) < 0) {
1437 av_log(ctx, AV_LOG_WARNING, "loading axis font failed, disable text drawing.\n");
1438 if ((ret = init_axis_empty(s)) < 0)
1439 return ret;
1440 }
1441 }
1442 } else {
1443 if (init_axis_from_font(s) < 0) {
1444 av_log(ctx, AV_LOG_WARNING, "loading axis font failed, disable text drawing.\n");
1445 if ((ret = init_axis_empty(s)) < 0)
1446 return ret;
1447 }
1448 }
1449 }
1450
1451 if (s->sono_h) {
1452 s->sono_frame = alloc_frame_empty((outlink->format == AV_PIX_FMT_YUV420P) ?
1453 AV_PIX_FMT_YUV422P : outlink->format, s->width, s->sono_h);
1454 if (!s->sono_frame)
1455 return AVERROR(ENOMEM);
1456 }
1457
1458 s->h_buf = av_malloc_array(s->cqt_len, sizeof (*s->h_buf));
1459 s->rcp_h_buf = av_malloc_array(s->width, sizeof(*s->rcp_h_buf));
1460 s->c_buf = av_malloc_array(s->width, sizeof(*s->c_buf));
1461 if (!s->h_buf || !s->rcp_h_buf || !s->c_buf)
1462 return AVERROR(ENOMEM);
1463
1464 s->sono_count = 0;
1465 s->next_pts = 0;
1466 s->sono_idx = 0;
1467 s->remaining_fill = s->remaining_fill_max;
1468 s->remaining_frac = 0;
1469 s->step_frac = av_div_q(av_make_q(inlink->sample_rate, s->count) , s->rate);
1470 s->step = (int)(s->step_frac.num / s->step_frac.den);
1471 s->step_frac.num %= s->step_frac.den;
1472 if (s->step_frac.num) {
1473 av_log(ctx, AV_LOG_INFO, "audio: %d Hz, step = %d + %d/%d.\n",
1474 inlink->sample_rate, s->step, s->step_frac.num, s->step_frac.den);
1475 av_log(ctx, AV_LOG_WARNING, "fractional step.\n");
1476 } else {
1477 av_log(ctx, AV_LOG_INFO, "audio: %d Hz, step = %d.\n",
1478 inlink->sample_rate, s->step);
1479 }
1480
1481 return 0;
1482 }
1483
1484
1485 static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
1486 {
1487 AVFilterContext *ctx = inlink->dst;
1488 AVFilterLink *outlink = ctx->outputs[0];
1489 ShowCQTContext *s = ctx->priv;
1490 int remaining, step, ret, x, i, j, m;
1491 float *audio_data;
1492 AVFrame *out = NULL;
1493
1494 if (!insamples) {
1495 while (s->remaining_fill < s->remaining_fill_max) {
1496 memset(&s->fft_data[s->fft_len/2 + s->remaining_fill_max - s->remaining_fill], 0, sizeof(*s->fft_data) * s->remaining_fill);
1497 ret = plot_cqt(ctx, &out);
1498 if (ret < 0)
1499 return ret;
1500
1501 step = s->step + (s->step_frac.num + s->remaining_frac) / s->step_frac.den;
1502 s->remaining_frac = (s->step_frac.num + s->remaining_frac) % s->step_frac.den;
1503 for (x = 0; x < (s->fft_len/2 + s->remaining_fill_max - step); x++)
1504 s->fft_data[x] = s->fft_data[x+step];
1505 s->remaining_fill += step;
1506
1507 if (out)
1508 return ff_filter_frame(outlink, out);
1509 }
1510 return AVERROR_EOF;
1511 }
1512
1513 remaining = insamples->nb_samples;
1514 audio_data = (float*) insamples->data[0];
1515
1516 while (remaining) {
1517 i = insamples->nb_samples - remaining;
1518 j = s->fft_len/2 + s->remaining_fill_max - s->remaining_fill;
1519 if (remaining >= s->remaining_fill) {
1520 for (m = 0; m < s->remaining_fill; m++) {
1521 s->fft_data[j+m].re = audio_data[2*(i+m)];
1522 s->fft_data[j+m].im = audio_data[2*(i+m)+1];
1523 }
1524 ret = plot_cqt(ctx, &out);
1525 if (ret < 0) {
1526 av_frame_free(&insamples);
1527 return ret;
1528 }
1529 remaining -= s->remaining_fill;
1530 if (out) {
1531 int64_t pts = av_rescale_q(insamples->pts, inlink->time_base, av_make_q(1, inlink->sample_rate));
1532 pts += insamples->nb_samples - remaining - s->remaining_fill_max;
1533 pts = av_rescale_q(pts, av_make_q(1, inlink->sample_rate), outlink->time_base);
1534 if (FFABS(pts - out->pts) > PTS_TOLERANCE) {
1535 av_log(ctx, AV_LOG_DEBUG, "changing pts from %"PRId64" (%.3f) to %"PRId64" (%.3f).\n",
1536 out->pts, out->pts * av_q2d(outlink->time_base),
1537 pts, pts * av_q2d(outlink->time_base));
1538 out->pts = pts;
1539 s->next_pts = pts + PTS_STEP;
1540 }
1541 ret = ff_filter_frame(outlink, out);
1542 if (ret < 0) {
1543 av_frame_free(&insamples);
1544 return ret;
1545 }
1546 out = NULL;
1547 }
1548 step = s->step + (s->step_frac.num + s->remaining_frac) / s->step_frac.den;
1549 s->remaining_frac = (s->step_frac.num + s->remaining_frac) % s->step_frac.den;
1550 for (m = 0; m < s->fft_len/2 + s->remaining_fill_max - step; m++)
1551 s->fft_data[m] = s->fft_data[m+step];
1552 s->remaining_fill = step;
1553 } else {
1554 for (m = 0; m < remaining; m++) {
1555 s->fft_data[j+m].re = audio_data[2*(i+m)];
1556 s->fft_data[j+m].im = audio_data[2*(i+m)+1];
1557 }
1558 s->remaining_fill -= remaining;
1559 remaining = 0;
1560 }
1561 }
1562 av_frame_free(&insamples);
1563 return 0;
1564 }
1565
1566 static int request_frame(AVFilterLink *outlink)
1567 {
1568 AVFilterLink *inlink = outlink->src->inputs[0];
1569 int ret;
1570
1571 ret = ff_request_frame(inlink);
1572 if (ret == AVERROR_EOF)
1573 ret = filter_frame(inlink, NULL);
1574 return ret;
1575 }
1576
1577 static const AVFilterPad showcqt_inputs[] = {
1578 {
1579 .name = "default",
1580 .type = AVMEDIA_TYPE_AUDIO,
1581 .filter_frame = filter_frame,
1582 },
1583 };
1584
1585 static const AVFilterPad showcqt_outputs[] = {
1586 {
1587 .name = "default",
1588 .type = AVMEDIA_TYPE_VIDEO,
1589 .config_props = config_output,
1590 .request_frame = request_frame,
1591 },
1592 };
1593
1594 const AVFilter ff_avf_showcqt = {
1595 .name = "showcqt",
1596 .description = NULL_IF_CONFIG_SMALL("Convert input audio to a CQT (Constant/Clamped Q Transform) spectrum video output."),
1597 .init = init,
1598 .uninit = uninit,
1599 .priv_size = sizeof(ShowCQTContext),
1600 FILTER_INPUTS(showcqt_inputs),
1601 FILTER_OUTPUTS(showcqt_outputs),
1602 FILTER_QUERY_FUNC(query_formats),
1603 .priv_class = &showcqt_class,
1604 };
1605