FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/af_adynamicequalizer.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 0 59 0.0%
Functions: 0 5 0.0%
Branches: 0 23 0.0%

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1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <float.h>
20
21 #include "libavutil/ffmath.h"
22 #include "libavutil/mem.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "audio.h"
26 #include "filters.h"
27 #include "formats.h"
28
29 enum DetectionModes {
30 DET_UNSET = 0,
31 DET_DISABLED,
32 DET_OFF,
33 DET_ON,
34 DET_ADAPTIVE,
35 NB_DMODES,
36 };
37
38 enum FilterModes {
39 LISTEN = -1,
40 CUT_BELOW,
41 CUT_ABOVE,
42 BOOST_BELOW,
43 BOOST_ABOVE,
44 NB_FMODES,
45 };
46
47 typedef struct ChannelContext {
48 double fa_double[3], fm_double[3];
49 double dstate_double[2];
50 double fstate_double[2];
51 double tstate_double[2];
52 double lin_gain_double;
53 double detect_double;
54 double threshold_log_double;
55 double new_threshold_log_double;
56 double log_sum_double;
57 double sum_double;
58 float fa_float[3], fm_float[3];
59 float dstate_float[2];
60 float fstate_float[2];
61 float tstate_float[2];
62 float lin_gain_float;
63 float detect_float;
64 float threshold_log_float;
65 float new_threshold_log_float;
66 float log_sum_float;
67 float sum_float;
68 void *dqueue;
69 void *queue;
70 int position;
71 int size;
72 int front;
73 int back;
74 int detection;
75 int init;
76 } ChannelContext;
77
78 typedef struct AudioDynamicEqualizerContext {
79 const AVClass *class;
80
81 double threshold;
82 double threshold_log;
83 double dfrequency;
84 double dqfactor;
85 double tfrequency;
86 double tqfactor;
87 double ratio;
88 double range;
89 double makeup;
90 double dattack;
91 double drelease;
92 double dattack_coef;
93 double drelease_coef;
94 double gattack_coef;
95 double grelease_coef;
96 int mode;
97 int detection;
98 int tftype;
99 int dftype;
100 int precision;
101 int format;
102 int nb_channels;
103
104 int (*filter_prepare)(AVFilterContext *ctx);
105 int (*filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
106
107 double da_double[3], dm_double[3];
108 float da_float[3], dm_float[3];
109
110 ChannelContext *cc;
111 } AudioDynamicEqualizerContext;
112
113 static int query_formats(const AVFilterContext *ctx,
114 AVFilterFormatsConfig **cfg_in,
115 AVFilterFormatsConfig **cfg_out)
116 {
117 const AudioDynamicEqualizerContext *s = ctx->priv;
118 static const enum AVSampleFormat sample_fmts[3][3] = {
119 { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE },
120 { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE },
121 { AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE },
122 };
123 int ret;
124
125 if ((ret = ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out,
126 sample_fmts[s->precision])) < 0)
127 return ret;
128
129 return 0;
130 }
131
132 static double get_coef(double x, double sr)
133 {
134 return 1.0 - exp(-1.0 / (0.001 * x * sr));
135 }
136
137 typedef struct ThreadData {
138 AVFrame *in, *out;
139 } ThreadData;
140
141 #define DEPTH 32
142 #include "adynamicequalizer_template.c"
143
144 #undef DEPTH
145 #define DEPTH 64
146 #include "adynamicequalizer_template.c"
147
148 static int config_input(AVFilterLink *inlink)
149 {
150 AVFilterContext *ctx = inlink->dst;
151 AudioDynamicEqualizerContext *s = ctx->priv;
152
153 s->format = inlink->format;
154 s->cc = av_calloc(inlink->ch_layout.nb_channels, sizeof(*s->cc));
155 if (!s->cc)
156 return AVERROR(ENOMEM);
157 s->nb_channels = inlink->ch_layout.nb_channels;
158
159 switch (s->format) {
160 case AV_SAMPLE_FMT_DBLP:
161 s->filter_prepare = filter_prepare_double;
162 s->filter_channels = filter_channels_double;
163 break;
164 case AV_SAMPLE_FMT_FLTP:
165 s->filter_prepare = filter_prepare_float;
166 s->filter_channels = filter_channels_float;
167 break;
168 }
169
170 for (int ch = 0; ch < s->nb_channels; ch++) {
171 ChannelContext *cc = &s->cc[ch];
172 cc->queue = av_calloc(inlink->sample_rate, sizeof(double));
173 cc->dqueue = av_calloc(inlink->sample_rate, sizeof(double));
174 if (!cc->queue || !cc->dqueue)
175 return AVERROR(ENOMEM);
176 }
177
178 return 0;
179 }
180
181 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
182 {
183 AVFilterContext *ctx = inlink->dst;
184 AVFilterLink *outlink = ctx->outputs[0];
185 AudioDynamicEqualizerContext *s = ctx->priv;
186 ThreadData td;
187 AVFrame *out;
188
189 if (av_frame_is_writable(in)) {
190 out = in;
191 } else {
192 out = ff_get_audio_buffer(outlink, in->nb_samples);
193 if (!out) {
194 av_frame_free(&in);
195 return AVERROR(ENOMEM);
196 }
197 av_frame_copy_props(out, in);
198 }
199
200 td.in = in;
201 td.out = out;
202 s->filter_prepare(ctx);
203 ff_filter_execute(ctx, s->filter_channels, &td, NULL,
204 FFMIN(outlink->ch_layout.nb_channels, ff_filter_get_nb_threads(ctx)));
205
206 if (out != in)
207 av_frame_free(&in);
208 return ff_filter_frame(outlink, out);
209 }
210
211 static av_cold void uninit(AVFilterContext *ctx)
212 {
213 AudioDynamicEqualizerContext *s = ctx->priv;
214
215 for (int ch = 0; ch < s->nb_channels; ch++) {
216 ChannelContext *cc = &s->cc[ch];
217 av_freep(&cc->queue);
218 av_freep(&cc->dqueue);
219 }
220 av_freep(&s->cc);
221 }
222
223 #define OFFSET(x) offsetof(AudioDynamicEqualizerContext, x)
224 #define AF AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
225 #define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
226
227 static const AVOption adynamicequalizer_options[] = {
228 { "threshold", "set detection threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 100, FLAGS },
229 { "dfrequency", "set detection frequency", OFFSET(dfrequency), AV_OPT_TYPE_DOUBLE, {.dbl=1000}, 2, 1000000, FLAGS },
230 { "dqfactor", "set detection Q factor", OFFSET(dqfactor), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.001, 1000, FLAGS },
231 { "tfrequency", "set target frequency", OFFSET(tfrequency), AV_OPT_TYPE_DOUBLE, {.dbl=1000}, 2, 1000000, FLAGS },
232 { "tqfactor", "set target Q factor", OFFSET(tqfactor), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.001, 1000, FLAGS },
233 { "attack", "set detection attack duration", OFFSET(dattack), AV_OPT_TYPE_DOUBLE, {.dbl=20}, 0.01, 2000, FLAGS },
234 { "release","set detection release duration",OFFSET(drelease), AV_OPT_TYPE_DOUBLE, {.dbl=200}, 0.01, 2000, FLAGS },
235 { "ratio", "set ratio factor", OFFSET(ratio), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 30, FLAGS },
236 { "makeup", "set makeup gain", OFFSET(makeup), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1000, FLAGS },
237 { "range", "set max gain", OFFSET(range), AV_OPT_TYPE_DOUBLE, {.dbl=50}, 1, 2000, FLAGS },
238 { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, LISTEN,NB_FMODES-1,FLAGS, .unit = "mode" },
239 { "listen", 0, 0, AV_OPT_TYPE_CONST, {.i64=LISTEN}, 0, 0, FLAGS, .unit = "mode" },
240 { "cutbelow", 0, 0, AV_OPT_TYPE_CONST, {.i64=CUT_BELOW},0, 0, FLAGS, .unit = "mode" },
241 { "cutabove", 0, 0, AV_OPT_TYPE_CONST, {.i64=CUT_ABOVE},0, 0, FLAGS, .unit = "mode" },
242 { "boostbelow", 0, 0, AV_OPT_TYPE_CONST, {.i64=BOOST_BELOW},0, 0, FLAGS, .unit = "mode" },
243 { "boostabove", 0, 0, AV_OPT_TYPE_CONST, {.i64=BOOST_ABOVE},0, 0, FLAGS, .unit = "mode" },
244 { "dftype", "set detection filter type",OFFSET(dftype), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, .unit = "dftype" },
245 { "bandpass", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "dftype" },
246 { "lowpass", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "dftype" },
247 { "highpass", 0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, .unit = "dftype" },
248 { "peak", 0, 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, .unit = "dftype" },
249 { "tftype", "set target filter type", OFFSET(tftype), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, .unit = "tftype" },
250 { "bell", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "tftype" },
251 { "lowshelf", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "tftype" },
252 { "highshelf",0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, .unit = "tftype" },
253 { "auto", "set auto threshold", OFFSET(detection), AV_OPT_TYPE_INT, {.i64=DET_OFF},DET_DISABLED,NB_DMODES-1,FLAGS, .unit = "auto" },
254 { "disabled", 0, 0, AV_OPT_TYPE_CONST, {.i64=DET_DISABLED}, 0, 0, FLAGS, .unit = "auto" },
255 { "off", 0, 0, AV_OPT_TYPE_CONST, {.i64=DET_OFF}, 0, 0, FLAGS, .unit = "auto" },
256 { "on", 0, 0, AV_OPT_TYPE_CONST, {.i64=DET_ON}, 0, 0, FLAGS, .unit = "auto" },
257 { "adaptive", 0, 0, AV_OPT_TYPE_CONST, {.i64=DET_ADAPTIVE}, 0, 0, FLAGS, .unit = "auto" },
258 { "precision", "set processing precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, AF, .unit = "precision" },
259 { "auto", "set auto processing precision", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, .unit = "precision" },
260 { "float", "set single-floating point processing precision", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, .unit = "precision" },
261 { "double","set double-floating point processing precision", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, .unit = "precision" },
262 { NULL }
263 };
264
265 AVFILTER_DEFINE_CLASS(adynamicequalizer);
266
267 static const AVFilterPad inputs[] = {
268 {
269 .name = "default",
270 .type = AVMEDIA_TYPE_AUDIO,
271 .filter_frame = filter_frame,
272 .config_props = config_input,
273 },
274 };
275
276 const AVFilter ff_af_adynamicequalizer = {
277 .name = "adynamicequalizer",
278 .description = NULL_IF_CONFIG_SMALL("Apply Dynamic Equalization of input audio."),
279 .priv_size = sizeof(AudioDynamicEqualizerContext),
280 .priv_class = &adynamicequalizer_class,
281 .uninit = uninit,
282 FILTER_INPUTS(inputs),
283 FILTER_OUTPUTS(ff_audio_default_filterpad),
284 FILTER_QUERY_FUNC2(query_formats),
285 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
286 AVFILTER_FLAG_SLICE_THREADS,
287 .process_command = ff_filter_process_command,
288 };
289