FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/afir_template.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 0 217 0.0%
Branches: 0 69 0.0%

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1 /*
2 * Copyright (c) 2017 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 "avfilter.h"
22 #include "formats.h"
23 #include "internal.h"
24 #include "audio.h"
25
26 #undef ctype
27 #undef ftype
28 #undef SQRT
29 #undef SAMPLE_FORMAT
30 #if DEPTH == 32
31 #define SAMPLE_FORMAT float
32 #define SQRT sqrtf
33 #define ctype AVComplexFloat
34 #define ftype float
35 #else
36 #define SAMPLE_FORMAT double
37 #define SQRT sqrt
38 #define ctype AVComplexDouble
39 #define ftype double
40 #endif
41
42 #define fn3(a,b) a##_##b
43 #define fn2(a,b) fn3(a,b)
44 #define fn(a) fn2(a, SAMPLE_FORMAT)
45
46 static void fn(draw_response)(AVFilterContext *ctx, AVFrame *out)
47 {
48 AudioFIRContext *s = ctx->priv;
49 ftype *mag, *phase, *delay, min = FLT_MAX, max = FLT_MIN;
50 ftype min_delay = FLT_MAX, max_delay = FLT_MIN;
51 int prev_ymag = -1, prev_yphase = -1, prev_ydelay = -1;
52 char text[32];
53 int channel, i, x;
54
55 memset(out->data[0], 0, s->h * out->linesize[0]);
56
57 phase = av_malloc_array(s->w, sizeof(*phase));
58 mag = av_malloc_array(s->w, sizeof(*mag));
59 delay = av_malloc_array(s->w, sizeof(*delay));
60 if (!mag || !phase || !delay)
61 goto end;
62
63 channel = av_clip(s->ir_channel, 0, s->ir[s->selir]->ch_layout.nb_channels - 1);
64 for (i = 0; i < s->w; i++) {
65 const ftype *src = (const ftype *)s->ir[s->selir]->extended_data[channel];
66 double w = i * M_PI / (s->w - 1);
67 double div, real_num = 0., imag_num = 0., real = 0., imag = 0.;
68
69 for (x = 0; x < s->nb_taps; x++) {
70 real += cos(-x * w) * src[x];
71 imag += sin(-x * w) * src[x];
72 real_num += cos(-x * w) * src[x] * x;
73 imag_num += sin(-x * w) * src[x] * x;
74 }
75
76 mag[i] = hypot(real, imag);
77 phase[i] = atan2(imag, real);
78 div = real * real + imag * imag;
79 delay[i] = (real_num * real + imag_num * imag) / div;
80 min = fminf(min, mag[i]);
81 max = fmaxf(max, mag[i]);
82 min_delay = fminf(min_delay, delay[i]);
83 max_delay = fmaxf(max_delay, delay[i]);
84 }
85
86 for (i = 0; i < s->w; i++) {
87 int ymag = mag[i] / max * (s->h - 1);
88 int ydelay = (delay[i] - min_delay) / (max_delay - min_delay) * (s->h - 1);
89 int yphase = (0.5 * (1. + phase[i] / M_PI)) * (s->h - 1);
90
91 ymag = s->h - 1 - av_clip(ymag, 0, s->h - 1);
92 yphase = s->h - 1 - av_clip(yphase, 0, s->h - 1);
93 ydelay = s->h - 1 - av_clip(ydelay, 0, s->h - 1);
94
95 if (prev_ymag < 0)
96 prev_ymag = ymag;
97 if (prev_yphase < 0)
98 prev_yphase = yphase;
99 if (prev_ydelay < 0)
100 prev_ydelay = ydelay;
101
102 draw_line(out, i, ymag, FFMAX(i - 1, 0), prev_ymag, 0xFFFF00FF);
103 draw_line(out, i, yphase, FFMAX(i - 1, 0), prev_yphase, 0xFF00FF00);
104 draw_line(out, i, ydelay, FFMAX(i - 1, 0), prev_ydelay, 0xFF00FFFF);
105
106 prev_ymag = ymag;
107 prev_yphase = yphase;
108 prev_ydelay = ydelay;
109 }
110
111 if (s->w > 400 && s->h > 100) {
112 drawtext(out, 2, 2, "Max Magnitude:", 0xDDDDDDDD);
113 snprintf(text, sizeof(text), "%.2f", max);
114 drawtext(out, 15 * 8 + 2, 2, text, 0xDDDDDDDD);
115
116 drawtext(out, 2, 12, "Min Magnitude:", 0xDDDDDDDD);
117 snprintf(text, sizeof(text), "%.2f", min);
118 drawtext(out, 15 * 8 + 2, 12, text, 0xDDDDDDDD);
119
120 drawtext(out, 2, 22, "Max Delay:", 0xDDDDDDDD);
121 snprintf(text, sizeof(text), "%.2f", max_delay);
122 drawtext(out, 11 * 8 + 2, 22, text, 0xDDDDDDDD);
123
124 drawtext(out, 2, 32, "Min Delay:", 0xDDDDDDDD);
125 snprintf(text, sizeof(text), "%.2f", min_delay);
126 drawtext(out, 11 * 8 + 2, 32, text, 0xDDDDDDDD);
127 }
128
129 end:
130 av_free(delay);
131 av_free(phase);
132 av_free(mag);
133 }
134
135 static void fn(convert_channels)(AVFilterContext *ctx, AudioFIRContext *s)
136 {
137 for (int ch = 0; ch < ctx->inputs[1 + s->selir]->ch_layout.nb_channels; ch++) {
138 ftype *time = (ftype *)s->ir[s->selir]->extended_data[!s->one2many * ch];
139 int toffset = 0;
140
141 for (int i = FFMAX(1, s->length * s->nb_taps); i < s->nb_taps; i++)
142 time[i] = 0;
143
144 av_log(ctx, AV_LOG_DEBUG, "channel: %d\n", ch);
145
146 for (int segment = 0; segment < s->nb_segments; segment++) {
147 AudioFIRSegment *seg = &s->seg[segment];
148 ftype *blockin = (ftype *)seg->blockin->extended_data[ch];
149 ftype *blockout = (ftype *)seg->blockout->extended_data[ch];
150 ctype *coeff = (ctype *)seg->coeff->extended_data[ch];
151
152 av_log(ctx, AV_LOG_DEBUG, "segment: %d\n", segment);
153
154 for (int i = 0; i < seg->nb_partitions; i++) {
155 const int coffset = i * seg->coeff_size;
156 const int remaining = s->nb_taps - toffset;
157 const int size = remaining >= seg->part_size ? seg->part_size : remaining;
158
159 if (size < 8) {
160 for (int n = 0; n < size; n++)
161 coeff[coffset + n].re = time[toffset + n];
162
163 toffset += size;
164 continue;
165 }
166
167 memset(blockin, 0, sizeof(*blockin) * seg->fft_length);
168 memcpy(blockin, time + toffset, size * sizeof(*blockin));
169
170 seg->tx_fn(seg->tx[0], blockout, blockin, sizeof(ftype));
171
172 for (int n = 0; n < seg->part_size + 1; n++) {
173 coeff[coffset + n].re = blockout[2 * n];
174 coeff[coffset + n].im = blockout[2 * n + 1];
175 }
176
177 toffset += size;
178 }
179
180 av_log(ctx, AV_LOG_DEBUG, "nb_partitions: %d\n", seg->nb_partitions);
181 av_log(ctx, AV_LOG_DEBUG, "partition size: %d\n", seg->part_size);
182 av_log(ctx, AV_LOG_DEBUG, "block size: %d\n", seg->block_size);
183 av_log(ctx, AV_LOG_DEBUG, "fft_length: %d\n", seg->fft_length);
184 av_log(ctx, AV_LOG_DEBUG, "coeff_size: %d\n", seg->coeff_size);
185 av_log(ctx, AV_LOG_DEBUG, "input_size: %d\n", seg->input_size);
186 av_log(ctx, AV_LOG_DEBUG, "input_offset: %d\n", seg->input_offset);
187 }
188 }
189 }
190
191 static int fn(get_power)(AVFilterContext *ctx, AudioFIRContext *s, int cur_nb_taps)
192 {
193 ftype power = 0;
194 int ch;
195
196 switch (s->gtype) {
197 case -1:
198 /* nothing to do */
199 break;
200 case 0:
201 for (ch = 0; ch < ctx->inputs[1 + s->selir]->ch_layout.nb_channels; ch++) {
202 ftype *time = (ftype *)s->ir[s->selir]->extended_data[!s->one2many * ch];
203
204 for (int i = 0; i < cur_nb_taps; i++)
205 power += FFABS(time[i]);
206 }
207 s->gain = ctx->inputs[1 + s->selir]->ch_layout.nb_channels / power;
208 break;
209 case 1:
210 for (ch = 0; ch < ctx->inputs[1 + s->selir]->ch_layout.nb_channels; ch++) {
211 ftype *time = (ftype *)s->ir[s->selir]->extended_data[!s->one2many * ch];
212
213 for (int i = 0; i < cur_nb_taps; i++)
214 power += time[i];
215 }
216 s->gain = ctx->inputs[1 + s->selir]->ch_layout.nb_channels / power;
217 break;
218 case 2:
219 for (ch = 0; ch < ctx->inputs[1 + s->selir]->ch_layout.nb_channels; ch++) {
220 ftype *time = (ftype *)s->ir[s->selir]->extended_data[!s->one2many * ch];
221
222 for (int i = 0; i < cur_nb_taps; i++)
223 power += time[i] * time[i];
224 }
225 s->gain = SQRT(ch / power);
226 break;
227 default:
228 return AVERROR_BUG;
229 }
230
231 s->gain = FFMIN(s->gain * s->ir_gain, 1.);
232
233 av_log(ctx, AV_LOG_DEBUG, "power %f, gain %f\n", power, s->gain);
234
235 for (int ch = 0; ch < ctx->inputs[1 + s->selir]->ch_layout.nb_channels; ch++) {
236 ftype *time = (ftype *)s->ir[s->selir]->extended_data[!s->one2many * ch];
237
238 #if DEPTH == 32
239 s->fdsp->vector_fmul_scalar(time, time, s->gain, FFALIGN(cur_nb_taps, 4));
240 #else
241 s->fdsp->vector_dmul_scalar(time, time, s->gain, FFALIGN(cur_nb_taps, 8));
242 #endif
243 }
244
245 return 0;
246 }
247
248 static void fn(direct)(const ftype *in, const ctype *ir, int len, ftype *out)
249 {
250 for (int n = 0; n < len; n++)
251 for (int m = 0; m <= n; m++)
252 out[n] += ir[m].re * in[n - m];
253 }
254
255 static void fn(fir_fadd)(AudioFIRContext *s, ftype *dst, const ftype *src, int nb_samples)
256 {
257 if ((nb_samples & 15) == 0 && nb_samples >= 16) {
258 #if DEPTH == 32
259 s->fdsp->vector_fmac_scalar(dst, src, 1.f, nb_samples);
260 #else
261 s->fdsp->vector_dmac_scalar(dst, src, 1.0, nb_samples);
262 #endif
263 } else {
264 for (int n = 0; n < nb_samples; n++)
265 dst[n] += src[n];
266 }
267 }
268
269 static int fn(fir_quantum)(AVFilterContext *ctx, AVFrame *out, int ch, int offset)
270 {
271 AudioFIRContext *s = ctx->priv;
272 const ftype *in = (const ftype *)s->in->extended_data[ch] + offset;
273 ftype *blockin, *blockout, *buf, *ptr = (ftype *)out->extended_data[ch] + offset;
274 const int nb_samples = FFMIN(s->min_part_size, out->nb_samples - offset);
275 int n, i, j;
276
277 for (int segment = 0; segment < s->nb_segments; segment++) {
278 AudioFIRSegment *seg = &s->seg[segment];
279 ftype *src = (ftype *)seg->input->extended_data[ch];
280 ftype *dst = (ftype *)seg->output->extended_data[ch];
281 ftype *sumin = (ftype *)seg->sumin->extended_data[ch];
282 ftype *sumout = (ftype *)seg->sumout->extended_data[ch];
283
284 if (s->min_part_size >= 8) {
285 #if DEPTH == 32
286 s->fdsp->vector_fmul_scalar(src + seg->input_offset, in, s->dry_gain, FFALIGN(nb_samples, 4));
287 #else
288 s->fdsp->vector_dmul_scalar(src + seg->input_offset, in, s->dry_gain, FFALIGN(nb_samples, 8));
289 #endif
290 emms_c();
291 } else {
292 for (n = 0; n < nb_samples; n++)
293 src[seg->input_offset + n] = in[n] * s->dry_gain;
294 }
295
296 seg->output_offset[ch] += s->min_part_size;
297 if (seg->output_offset[ch] == seg->part_size) {
298 seg->output_offset[ch] = 0;
299 } else {
300 memmove(src, src + s->min_part_size, (seg->input_size - s->min_part_size) * sizeof(*src));
301
302 dst += seg->output_offset[ch];
303 fn(fir_fadd)(s, ptr, dst, nb_samples);
304 continue;
305 }
306
307 if (seg->part_size < 8) {
308 memset(dst, 0, sizeof(*dst) * seg->part_size * seg->nb_partitions);
309
310 j = seg->part_index[ch];
311
312 for (i = 0; i < seg->nb_partitions; i++) {
313 const int coffset = j * seg->coeff_size;
314 const ctype *coeff = (const ctype *)seg->coeff->extended_data[ch * !s->one2many] + coffset;
315
316 fn(direct)(src, coeff, nb_samples, dst);
317
318 if (j == 0)
319 j = seg->nb_partitions;
320 j--;
321 }
322
323 seg->part_index[ch] = (seg->part_index[ch] + 1) % seg->nb_partitions;
324
325 memmove(src, src + s->min_part_size, (seg->input_size - s->min_part_size) * sizeof(*src));
326
327 for (n = 0; n < nb_samples; n++) {
328 ptr[n] += dst[n];
329 }
330 continue;
331 }
332
333 memset(sumin, 0, sizeof(*sumin) * seg->fft_length);
334 blockin = (ftype *)seg->blockin->extended_data[ch] + seg->part_index[ch] * seg->block_size;
335 blockout = (ftype *)seg->blockout->extended_data[ch] + seg->part_index[ch] * seg->block_size;
336 memset(blockin + seg->part_size, 0, sizeof(*blockin) * (seg->fft_length - seg->part_size));
337
338 memcpy(blockin, src, sizeof(*src) * seg->part_size);
339
340 seg->tx_fn(seg->tx[ch], blockout, blockin, sizeof(ftype));
341
342 j = seg->part_index[ch];
343
344 for (i = 0; i < seg->nb_partitions; i++) {
345 const int coffset = j * seg->coeff_size;
346 const ftype *blockout = (const ftype *)seg->blockout->extended_data[ch] + i * seg->block_size;
347 const ctype *coeff = (const ctype *)seg->coeff->extended_data[ch * !s->one2many] + coffset;
348
349 #if DEPTH == 32
350 s->afirdsp.fcmul_add(sumin, blockout, (const ftype *)coeff, seg->part_size);
351 #else
352 s->afirdsp.dcmul_add(sumin, blockout, (const ftype *)coeff, seg->part_size);
353 #endif
354
355 if (j == 0)
356 j = seg->nb_partitions;
357 j--;
358 }
359
360 seg->itx_fn(seg->itx[ch], sumout, sumin, sizeof(ctype));
361
362 buf = (ftype *)seg->buffer->extended_data[ch];
363 fn(fir_fadd)(s, buf, sumout, seg->part_size);
364
365 memcpy(dst, buf, seg->part_size * sizeof(*dst));
366
367 buf = (ftype *)seg->buffer->extended_data[ch];
368 memcpy(buf, sumout + seg->part_size, seg->part_size * sizeof(*buf));
369
370 seg->part_index[ch] = (seg->part_index[ch] + 1) % seg->nb_partitions;
371
372 memmove(src, src + s->min_part_size, (seg->input_size - s->min_part_size) * sizeof(*src));
373
374 fn(fir_fadd)(s, ptr, dst, nb_samples);
375 }
376
377 if (s->min_part_size >= 8) {
378 #if DEPTH == 32
379 s->fdsp->vector_fmul_scalar(ptr, ptr, s->wet_gain, FFALIGN(nb_samples, 4));
380 #else
381 s->fdsp->vector_dmul_scalar(ptr, ptr, s->wet_gain, FFALIGN(nb_samples, 8));
382 #endif
383 emms_c();
384 } else {
385 for (n = 0; n < nb_samples; n++)
386 ptr[n] *= s->wet_gain;
387 }
388
389 return 0;
390 }
391
392
393