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avf_showspectrum.c
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1/*
2 * Copyright (c) 2012-2013 Clément Bœsch
3 * Copyright (c) 2013 Rudolf Polzer <divverent@xonotic.org>
4 * Copyright (c) 2015 Paul B Mahol
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file
25 * audio to spectrum (video) transmedia filter, based on ffplay rdft showmode
26 * (by Michael Niedermayer) and lavfi/avf_showwaves (by Stefano Sabatini).
27 */
28
29#include "config_components.h"
30
31#include <float.h>
32#include <math.h>
33#include <stdio.h>
34
35#include "libavutil/mem.h"
36#include "libavutil/tx.h"
37#include "libavutil/avassert.h"
38#include "libavutil/avstring.h"
39#include "libavutil/channel_layout.h"
40#include "libavutil/cpu.h"
41#include "libavutil/opt.h"
42#include "libavutil/parseutils.h"
43#include "libavutil/xga_font_data.h"
44#include "audio.h"
45#include "formats.h"
46#include "video.h"
47#include "avfilter.h"
48#include "filters.h"
49#include "window_func.h"
50
51enum DisplayMode { COMBINED, SEPARATE, NB_MODES };
52enum DataMode { D_MAGNITUDE, D_PHASE, D_UPHASE, NB_DMODES };
53enum FrequencyScale { F_LINEAR, F_LOG, NB_FSCALES };
54enum DisplayScale { LINEAR, SQRT, CBRT, LOG, FOURTHRT, FIFTHRT, NB_SCALES };
55enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, PLASMA, CIVIDIS, TERRAIN, NB_CLMODES };
56enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, LREPLACE, NB_SLIDES };
57enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
58
59#define DEFAULT_LENGTH 300
60
61typedef struct ShowSpectrumContext {
62 const AVClass *class;
63 int w, h;
64 char *rate_str;
65 AVRational auto_frame_rate;
66 AVRational frame_rate;
67 AVFrame *outpicref;
68 AVFrame *in_frame;
69 int nb_display_channels;
70 int orientation;
71 int channel_width;
72 int channel_height;
73 int sliding; ///< 1 if sliding mode, 0 otherwise
74 int mode; ///< channel display mode
75 int color_mode; ///< display color scheme
76 int scale;
77 int fscale;
78 float saturation; ///< color saturation multiplier
79 float rotation; ///< color rotation
80 int start, stop; ///< zoom mode
81 int data;
82 int xpos; ///< x position (current column)
83 AVTXContext **fft; ///< Fast Fourier Transform context
84 AVTXContext **ifft; ///< Inverse Fast Fourier Transform context
85 av_tx_fn tx_fn;
86 av_tx_fn itx_fn;
87 int fft_size; ///< number of coeffs (FFT window size)
88 AVComplexFloat **fft_in; ///< input FFT coeffs
89 AVComplexFloat **fft_data; ///< bins holder for each (displayed) channels
90 AVComplexFloat **fft_scratch;///< scratch buffers
91 float *window_func_lut; ///< Window function LUT
92 float **magnitudes;
93 float **phases;
94 int win_func;
95 int win_size;
96 int buf_size;
97 double win_scale;
98 float overlap;
99 float gain;
100 int hop_size;
101 float *combine_buffer; ///< color combining buffer (4 * h items)
102 float **color_buffer; ///< color buffer (4 * h * ch items)
103 int64_t pts;
104 int64_t old_pts;
105 int64_t in_pts;
106 int old_len;
107 int single_pic;
108 int legend;
109 int start_x, start_y;
110 float drange, limit;
111 float dmin, dmax;
112 uint64_t samples;
113 int (*plot_channel)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
114 int eof;
115
116 float opacity_factor;
117
118 AVFrame **frames;
119 unsigned int nb_frames;
120 unsigned int frames_size;
121} ShowSpectrumContext;
122
123#define OFFSET(x) offsetof(ShowSpectrumContext, x)
124#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
125
126static const AVOption showspectrum_options[] = {
127 { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
128 { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
129 { "slide", "set sliding mode", OFFSET(sliding), AV_OPT_TYPE_INT, {.i64 = 0}, 0, NB_SLIDES-1, FLAGS, .unit = "slide" },
130 { "replace", "replace old columns with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, .unit = "slide" },
131 { "scroll", "scroll from right to left", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, .unit = "slide" },
132 { "fullframe", "return full frames", 0, AV_OPT_TYPE_CONST, {.i64=FULLFRAME}, 0, 0, FLAGS, .unit = "slide" },
133 { "rscroll", "scroll from left to right", 0, AV_OPT_TYPE_CONST, {.i64=RSCROLL}, 0, 0, FLAGS, .unit = "slide" },
134 { "lreplace", "replace from right to left", 0, AV_OPT_TYPE_CONST, {.i64=LREPLACE}, 0, 0, FLAGS, .unit = "slide" },
135 { "mode", "set channel display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=COMBINED}, COMBINED, NB_MODES-1, FLAGS, .unit = "mode" },
136 { "combined", "combined mode", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, .unit = "mode" },
137 { "separate", "separate mode", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, .unit = "mode" },
138 { "color", "set channel coloring", OFFSET(color_mode), AV_OPT_TYPE_INT, {.i64=CHANNEL}, CHANNEL, NB_CLMODES-1, FLAGS, .unit = "color" },
139 { "channel", "separate color for each channel", 0, AV_OPT_TYPE_CONST, {.i64=CHANNEL}, 0, 0, FLAGS, .unit = "color" },
140 { "intensity", "intensity based coloring", 0, AV_OPT_TYPE_CONST, {.i64=INTENSITY}, 0, 0, FLAGS, .unit = "color" },
141 { "rainbow", "rainbow based coloring", 0, AV_OPT_TYPE_CONST, {.i64=RAINBOW}, 0, 0, FLAGS, .unit = "color" },
142 { "moreland", "moreland based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MORELAND}, 0, 0, FLAGS, .unit = "color" },
143 { "nebulae", "nebulae based coloring", 0, AV_OPT_TYPE_CONST, {.i64=NEBULAE}, 0, 0, FLAGS, .unit = "color" },
144 { "fire", "fire based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIRE}, 0, 0, FLAGS, .unit = "color" },
145 { "fiery", "fiery based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIERY}, 0, 0, FLAGS, .unit = "color" },
146 { "fruit", "fruit based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FRUIT}, 0, 0, FLAGS, .unit = "color" },
147 { "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, .unit = "color" },
148 { "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, .unit = "color" },
149 { "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, .unit = "color" },
150 { "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, .unit = "color" },
151 { "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, .unit = "color" },
152 { "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, .unit = "color" },
153 { "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, .unit = "color" },
154 { "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=SQRT}, LINEAR, NB_SCALES-1, FLAGS, .unit = "scale" },
155 { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, .unit = "scale" },
156 { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, .unit = "scale" },
157 { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, .unit = "scale" },
158 { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, .unit = "scale" },
159 { "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, .unit = "scale" },
160 { "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, .unit = "scale" },
161 { "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, .unit = "fscale" },
162 { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, .unit = "fscale" },
163 { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, .unit = "fscale" },
164 { "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS },
165 WIN_FUNC_OPTION("win_func", OFFSET(win_func), FLAGS, WFUNC_HANNING),
166 { "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, .unit = "orientation" },
167 { "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, .unit = "orientation" },
168 { "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, .unit = "orientation" },
169 { "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, 1, FLAGS },
170 { "gain", "set scale gain", OFFSET(gain), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 128, FLAGS },
171 { "data", "set data mode", OFFSET(data), AV_OPT_TYPE_INT, {.i64 = 0}, 0, NB_DMODES-1, FLAGS, .unit = "data" },
172 { "magnitude", NULL, 0, AV_OPT_TYPE_CONST, {.i64=D_MAGNITUDE}, 0, 0, FLAGS, .unit = "data" },
173 { "phase", NULL, 0, AV_OPT_TYPE_CONST, {.i64=D_PHASE}, 0, 0, FLAGS, .unit = "data" },
174 { "uphase", NULL, 0, AV_OPT_TYPE_CONST, {.i64=D_UPHASE}, 0, 0, FLAGS, .unit = "data" },
175 { "rotation", "color rotation", OFFSET(rotation), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -1, 1, FLAGS },
176 { "start", "start frequency", OFFSET(start), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
177 { "stop", "stop frequency", OFFSET(stop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
178 { "fps", "set video rate", OFFSET(rate_str), AV_OPT_TYPE_STRING, {.str = "auto"}, 0, 0, FLAGS },
179 { "legend", "draw legend", OFFSET(legend), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
180 { "drange", "set dynamic range in dBFS", OFFSET(drange), AV_OPT_TYPE_FLOAT, {.dbl = 120}, 10, 200, FLAGS },
181 { "limit", "set upper limit in dBFS", OFFSET(limit), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -100, 100, FLAGS },
182 { "opacity", "set opacity strength", OFFSET(opacity_factor), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 10, FLAGS },
183 { NULL }
184};
185
186AVFILTER_DEFINE_CLASS(showspectrum);
187
188static const struct ColorTable {
189 float a, y, u, v;
190} color_table[][8] = {
191 [INTENSITY] = {
192 { 0, 0, 0, 0 },
193 { 0.13, .03587126228984074, .1573300977624594, -.02548747583751842 },
194 { 0.30, .18572281794568020, .1772436246393981, .17475554840414750 },
195 { 0.60, .28184980583656130, -.1593064119945782, .47132074554608920 },
196 { 0.73, .65830621175547810, -.3716070802232764, .24352759331252930 },
197 { 0.78, .76318535758242900, -.4307467689263783, .16866496622310430 },
198 { 0.91, .95336363636363640, -.2045454545454546, .03313636363636363 },
199 { 1, 1, 0, 0 }},
200 [RAINBOW] = {
201 { 0, 0, 0, 0 },
202 { 0.13, 44/256., (189-128)/256., (138-128)/256. },
203 { 0.25, 29/256., (186-128)/256., (119-128)/256. },
204 { 0.38, 119/256., (194-128)/256., (53-128)/256. },
205 { 0.60, 111/256., (73-128)/256., (59-128)/256. },
206 { 0.73, 205/256., (19-128)/256., (149-128)/256. },
207 { 0.86, 135/256., (83-128)/256., (200-128)/256. },
208 { 1, 73/256., (95-128)/256., (225-128)/256. }},
209 [MORELAND] = {
210 { 0, 44/256., (181-128)/256., (112-128)/256. },
211 { 0.13, 126/256., (177-128)/256., (106-128)/256. },
212 { 0.25, 164/256., (163-128)/256., (109-128)/256. },
213 { 0.38, 200/256., (140-128)/256., (120-128)/256. },
214 { 0.60, 201/256., (117-128)/256., (141-128)/256. },
215 { 0.73, 177/256., (103-128)/256., (165-128)/256. },
216 { 0.86, 136/256., (100-128)/256., (183-128)/256. },
217 { 1, 68/256., (117-128)/256., (203-128)/256. }},
218 [NEBULAE] = {
219 { 0, 10/256., (134-128)/256., (132-128)/256. },
220 { 0.23, 21/256., (137-128)/256., (130-128)/256. },
221 { 0.45, 35/256., (134-128)/256., (134-128)/256. },
222 { 0.57, 51/256., (130-128)/256., (139-128)/256. },
223 { 0.67, 104/256., (116-128)/256., (162-128)/256. },
224 { 0.77, 120/256., (105-128)/256., (188-128)/256. },
225 { 0.87, 140/256., (105-128)/256., (188-128)/256. },
226 { 1, 1, 0, 0 }},
227 [FIRE] = {
228 { 0, 0, 0, 0 },
229 { 0.23, 44/256., (132-128)/256., (127-128)/256. },
230 { 0.45, 62/256., (116-128)/256., (140-128)/256. },
231 { 0.57, 75/256., (105-128)/256., (152-128)/256. },
232 { 0.67, 95/256., (91-128)/256., (166-128)/256. },
233 { 0.77, 126/256., (74-128)/256., (172-128)/256. },
234 { 0.87, 164/256., (73-128)/256., (162-128)/256. },
235 { 1, 1, 0, 0 }},
236 [FIERY] = {
237 { 0, 0, 0, 0 },
238 { 0.23, 36/256., (116-128)/256., (163-128)/256. },
239 { 0.45, 52/256., (102-128)/256., (200-128)/256. },
240 { 0.57, 116/256., (84-128)/256., (196-128)/256. },
241 { 0.67, 157/256., (67-128)/256., (181-128)/256. },
242 { 0.77, 193/256., (40-128)/256., (155-128)/256. },
243 { 0.87, 221/256., (101-128)/256., (134-128)/256. },
244 { 1, 1, 0, 0 }},
245 [FRUIT] = {
246 { 0, 0, 0, 0 },
247 { 0.20, 29/256., (136-128)/256., (119-128)/256. },
248 { 0.30, 60/256., (119-128)/256., (90-128)/256. },
249 { 0.40, 85/256., (91-128)/256., (85-128)/256. },
250 { 0.50, 116/256., (70-128)/256., (105-128)/256. },
251 { 0.60, 151/256., (50-128)/256., (146-128)/256. },
252 { 0.70, 191/256., (63-128)/256., (178-128)/256. },
253 { 1, 98/256., (80-128)/256., (221-128)/256. }},
254 [COOL] = {
255 { 0, 0, 0, 0 },
256 { .15, 0, .5, -.5 },
257 { 1, 1, -.5, .5 }},
258 [MAGMA] = {
259 { 0, 0, 0, 0 },
260 { 0.10, 23/256., (175-128)/256., (120-128)/256. },
261 { 0.23, 43/256., (158-128)/256., (144-128)/256. },
262 { 0.35, 85/256., (138-128)/256., (179-128)/256. },
263 { 0.48, 96/256., (128-128)/256., (189-128)/256. },
264 { 0.64, 128/256., (103-128)/256., (214-128)/256. },
265 { 0.92, 205/256., (80-128)/256., (152-128)/256. },
266 { 1, 1, 0, 0 }},
267 [GREEN] = {
268 { 0, 0, 0, 0 },
269 { .75, .5, 0, -.5 },
270 { 1, 1, 0, 0 }},
271 [VIRIDIS] = {
272 { 0, 0, 0, 0 },
273 { 0.10, 0x39/255., (0x9D -128)/255., (0x8F -128)/255. },
274 { 0.23, 0x5C/255., (0x9A -128)/255., (0x68 -128)/255. },
275 { 0.35, 0x69/255., (0x93 -128)/255., (0x57 -128)/255. },
276 { 0.48, 0x76/255., (0x88 -128)/255., (0x4B -128)/255. },
277 { 0.64, 0x8A/255., (0x72 -128)/255., (0x4F -128)/255. },
278 { 0.80, 0xA3/255., (0x50 -128)/255., (0x66 -128)/255. },
279 { 1, 0xCC/255., (0x2F -128)/255., (0x87 -128)/255. }},
280 [PLASMA] = {
281 { 0, 0, 0, 0 },
282 { 0.10, 0x27/255., (0xC2 -128)/255., (0x82 -128)/255. },
283 { 0.58, 0x5B/255., (0x9A -128)/255., (0xAE -128)/255. },
284 { 0.70, 0x89/255., (0x44 -128)/255., (0xAB -128)/255. },
285 { 0.80, 0xB4/255., (0x2B -128)/255., (0x9E -128)/255. },
286 { 0.91, 0xD2/255., (0x38 -128)/255., (0x92 -128)/255. },
287 { 1, 1, 0, 0. }},
288 [CIVIDIS] = {
289 { 0, 0, 0, 0 },
290 { 0.20, 0x28/255., (0x98 -128)/255., (0x6F -128)/255. },
291 { 0.50, 0x48/255., (0x95 -128)/255., (0x74 -128)/255. },
292 { 0.63, 0x69/255., (0x84 -128)/255., (0x7F -128)/255. },
293 { 0.76, 0x89/255., (0x75 -128)/255., (0x84 -128)/255. },
294 { 0.90, 0xCE/255., (0x35 -128)/255., (0x95 -128)/255. },
295 { 1, 1, 0, 0. }},
296 [TERRAIN] = {
297 { 0, 0, 0, 0 },
298 { 0.15, 0, .5, 0 },
299 { 0.60, 1, -.5, -.5 },
300 { 0.85, 1, -.5, .5 },
301 { 1, 1, 0, 0 }},
302};
303
304static av_cold void uninit(AVFilterContext *ctx)
305{
306 ShowSpectrumContext *s = ctx->priv;
307 int i;
308
309 av_freep(&s->combine_buffer);
310 if (s->fft) {
311 for (i = 0; i < s->nb_display_channels; i++)
312 av_tx_uninit(&s->fft[i]);
313 }
314 av_freep(&s->fft);
315 if (s->ifft) {
316 for (i = 0; i < s->nb_display_channels; i++)
317 av_tx_uninit(&s->ifft[i]);
318 }
319 av_freep(&s->ifft);
320 if (s->fft_data) {
321 for (i = 0; i < s->nb_display_channels; i++)
322 av_freep(&s->fft_data[i]);
323 }
324 av_freep(&s->fft_data);
325 if (s->fft_in) {
326 for (i = 0; i < s->nb_display_channels; i++)
327 av_freep(&s->fft_in[i]);
328 }
329 av_freep(&s->fft_in);
330 if (s->fft_scratch) {
331 for (i = 0; i < s->nb_display_channels; i++)
332 av_freep(&s->fft_scratch[i]);
333 }
334 av_freep(&s->fft_scratch);
335 if (s->color_buffer) {
336 for (i = 0; i < s->nb_display_channels; i++)
337 av_freep(&s->color_buffer[i]);
338 }
339 av_freep(&s->color_buffer);
340 av_freep(&s->window_func_lut);
341 if (s->magnitudes) {
342 for (i = 0; i < s->nb_display_channels; i++)
343 av_freep(&s->magnitudes[i]);
344 }
345 av_freep(&s->magnitudes);
346 av_frame_free(&s->outpicref);
347 av_frame_free(&s->in_frame);
348 if (s->phases) {
349 for (i = 0; i < s->nb_display_channels; i++)
350 av_freep(&s->phases[i]);
351 }
352 av_freep(&s->phases);
353
354 while (s->nb_frames > 0) {
355 av_frame_free(&s->frames[s->nb_frames - 1]);
356 s->nb_frames--;
357 }
358
359 av_freep(&s->frames);
360}
361
362static int query_formats(const AVFilterContext *ctx,
363 AVFilterFormatsConfig **cfg_in,
364 AVFilterFormatsConfig **cfg_out)
365{
366 AVFilterFormats *formats = NULL;
367 static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
368 static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
369 int ret;
370
371 /* set input audio formats */
372 formats = ff_make_sample_format_list(sample_fmts);
373 if ((ret = ff_formats_ref(formats, &cfg_in[0]->formats)) < 0)
374 return ret;
375
376 /* set output video format */
377 formats = ff_make_pixel_format_list(pix_fmts);
378 if ((ret = ff_formats_ref(formats, &cfg_out[0]->formats)) < 0)
379 return ret;
380
381 return 0;
382}
383
384static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
385{
386 ShowSpectrumContext *s = ctx->priv;
387 AVFilterLink *inlink = ctx->inputs[0];
388 const float *window_func_lut = s->window_func_lut;
389 AVFrame *fin = arg;
390 const int ch = jobnr;
391 int n;
392
393 /* fill FFT input with the number of samples available */
394 const float *p = (float *)fin->extended_data[ch];
395 float *in_frame = (float *)s->in_frame->extended_data[ch];
396
397 memmove(in_frame, in_frame + s->hop_size, (s->fft_size - s->hop_size) * sizeof(float));
398 memcpy(in_frame + s->fft_size - s->hop_size, p, fin->nb_samples * sizeof(float));
399
400 for (int i = fin->nb_samples; i < s->hop_size; i++)
401 in_frame[i + s->fft_size - s->hop_size] = 0.f;
402
403 if (s->stop) {
404 float theta, phi, psi, a, b, S, c;
405 AVComplexFloat *f = s->fft_in[ch];
406 AVComplexFloat *g = s->fft_data[ch];
407 AVComplexFloat *h = s->fft_scratch[ch];
408 int L = s->buf_size;
409 int N = s->win_size;
410 int M = s->win_size / 2;
411
412 for (n = 0; n < s->win_size; n++) {
413 s->fft_data[ch][n].re = in_frame[n] * window_func_lut[n];
414 s->fft_data[ch][n].im = 0;
415 }
416
417 phi = 2.f * M_PI * (s->stop - s->start) / (float)inlink->sample_rate / (M - 1);
418 theta = 2.f * M_PI * s->start / (float)inlink->sample_rate;
419
420 for (int n = 0; n < M; n++) {
421 h[n].re = cosf(n * n / 2.f * phi);
422 h[n].im = sinf(n * n / 2.f * phi);
423 }
424
425 for (int n = M; n < L; n++) {
426 h[n].re = 0.f;
427 h[n].im = 0.f;
428 }
429
430 for (int n = L - N; n < L; n++) {
431 h[n].re = cosf((L - n) * (L - n) / 2.f * phi);
432 h[n].im = sinf((L - n) * (L - n) / 2.f * phi);
433 }
434
435 for (int n = N; n < L; n++) {
436 g[n].re = 0.f;
437 g[n].im = 0.f;
438 }
439
440 for (int n = 0; n < N; n++) {
441 psi = n * theta + n * n / 2.f * phi;
442 c = cosf(psi);
443 S = -sinf(psi);
444 a = c * g[n].re - S * g[n].im;
445 b = S * g[n].re + c * g[n].im;
446 g[n].re = a;
447 g[n].im = b;
448 }
449
450 memcpy(f, h, s->buf_size * sizeof(*f));
451 s->tx_fn(s->fft[ch], h, f, sizeof(AVComplexFloat));
452
453 memcpy(f, g, s->buf_size * sizeof(*f));
454 s->tx_fn(s->fft[ch], g, f, sizeof(AVComplexFloat));
455
456 for (int n = 0; n < L; n++) {
457 c = g[n].re;
458 S = g[n].im;
459 a = c * h[n].re - S * h[n].im;
460 b = S * h[n].re + c * h[n].im;
461
462 g[n].re = a / L;
463 g[n].im = b / L;
464 }
465
466 memcpy(f, g, s->buf_size * sizeof(*f));
467 s->itx_fn(s->ifft[ch], g, f, sizeof(AVComplexFloat));
468
469 for (int k = 0; k < M; k++) {
470 psi = k * k / 2.f * phi;
471 c = cosf(psi);
472 S = -sinf(psi);
473 a = c * g[k].re - S * g[k].im;
474 b = S * g[k].re + c * g[k].im;
475 s->fft_data[ch][k].re = a;
476 s->fft_data[ch][k].im = b;
477 }
478 } else {
479 for (n = 0; n < s->win_size; n++) {
480 s->fft_in[ch][n].re = in_frame[n] * window_func_lut[n];
481 s->fft_in[ch][n].im = 0;
482 }
483
484 /* run FFT on each samples set */
485 s->tx_fn(s->fft[ch], s->fft_data[ch], s->fft_in[ch], sizeof(AVComplexFloat));
486 }
487
488 return 0;
489}
490
491static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
492{
493 const uint8_t *font;
494 int font_height;
495
496 font = avpriv_cga_font_get(), font_height = 8;
497
498 for (int i = 0; txt[i]; i++) {
499 int char_y, mask;
500
501 if (o) {
502 for (char_y = font_height - 1; char_y >= 0; char_y--) {
503 uint8_t *p = pic->data[0] + (y + i * 10) * pic->linesize[0] + x;
504 for (mask = 0x80; mask; mask >>= 1) {
505 if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
506 p[char_y] = ~p[char_y];
507 p += pic->linesize[0];
508 }
509 }
510 } else {
511 uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8);
512 for (char_y = 0; char_y < font_height; char_y++) {
513 for (mask = 0x80; mask; mask >>= 1) {
514 if (font[txt[i] * font_height + char_y] & mask)
515 *p = ~(*p);
516 p++;
517 }
518 p += pic->linesize[0] - 8;
519 }
520 }
521 }
522
523 for (int i = 0; txt[i] && pic->data[3]; i++) {
524 int char_y, mask;
525
526 if (o) {
527 for (char_y = font_height - 1; char_y >= 0; char_y--) {
528 uint8_t *p = pic->data[3] + (y + i * 10) * pic->linesize[3] + x;
529 for (mask = 0x80; mask; mask >>= 1) {
530 for (int k = 0; k < 8; k++)
531 p[k] = 255;
532 p += pic->linesize[3];
533 }
534 }
535 } else {
536 uint8_t *p = pic->data[3] + y*pic->linesize[3] + (x + i*8);
537 for (char_y = 0; char_y < font_height; char_y++) {
538 for (mask = 0x80; mask; mask >>= 1)
539 *p++ = 255;
540 p += pic->linesize[3] - 8;
541 }
542 }
543 }
544}
545
546static void color_range(ShowSpectrumContext *s, int ch,
547 float *yf, float *uf, float *vf)
548{
549 switch (s->mode) {
550 case COMBINED:
551 // reduce range by channel count
552 *yf = 256.0f / s->nb_display_channels;
553 switch (s->color_mode) {
554 case RAINBOW:
555 case MORELAND:
556 case NEBULAE:
557 case FIRE:
558 case FIERY:
559 case FRUIT:
560 case COOL:
561 case GREEN:
562 case VIRIDIS:
563 case PLASMA:
564 case CIVIDIS:
565 case TERRAIN:
566 case MAGMA:
567 case INTENSITY:
568 *uf = *yf;
569 *vf = *yf;
570 break;
571 case CHANNEL:
572 /* adjust saturation for mixed UV coloring */
573 /* this factor is correct for infinite channels, an approximation otherwise */
574 *uf = *yf * M_PI;
575 *vf = *yf * M_PI;
576 break;
577 default:
578 av_assert0(0);
579 }
580 break;
581 case SEPARATE:
582 // full range
583 *yf = 256.0f;
584 *uf = 256.0f;
585 *vf = 256.0f;
586 break;
587 default:
588 av_assert0(0);
589 }
590
591 if (s->color_mode == CHANNEL) {
592 if (s->nb_display_channels > 1) {
593 *uf *= 0.5f * sinf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
594 *vf *= 0.5f * cosf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
595 } else {
596 *uf *= 0.5f * sinf(M_PI * s->rotation);
597 *vf *= 0.5f * cosf(M_PI * s->rotation + M_PI_2);
598 }
599 } else {
600 *uf += *uf * sinf(M_PI * s->rotation);
601 *vf += *vf * cosf(M_PI * s->rotation + M_PI_2);
602 }
603
604 *uf *= s->saturation;
605 *vf *= s->saturation;
606}
607
608static void pick_color(ShowSpectrumContext *s,
609 float yf, float uf, float vf,
610 float a, float *out)
611{
612 const float af = s->opacity_factor * 255.f;
613
614 if (s->color_mode > CHANNEL) {
615 const int cm = s->color_mode;
616 float y, u, v;
617 int i;
618
619 for (i = 1; i < FF_ARRAY_ELEMS(color_table[cm]) - 1; i++)
620 if (color_table[cm][i].a >= a)
621 break;
622 // i now is the first item >= the color
623 // now we know to interpolate between item i - 1 and i
624 if (a <= color_table[cm][i - 1].a) {
625 y = color_table[cm][i - 1].y;
626 u = color_table[cm][i - 1].u;
627 v = color_table[cm][i - 1].v;
628 } else if (a >= color_table[cm][i].a) {
629 y = color_table[cm][i].y;
630 u = color_table[cm][i].u;
631 v = color_table[cm][i].v;
632 } else {
633 float start = color_table[cm][i - 1].a;
634 float end = color_table[cm][i].a;
635 float lerpfrac = (a - start) / (end - start);
636 y = color_table[cm][i - 1].y * (1.0f - lerpfrac)
637 + color_table[cm][i].y * lerpfrac;
638 u = color_table[cm][i - 1].u * (1.0f - lerpfrac)
639 + color_table[cm][i].u * lerpfrac;
640 v = color_table[cm][i - 1].v * (1.0f - lerpfrac)
641 + color_table[cm][i].v * lerpfrac;
642 }
643
644 out[0] = y * yf;
645 out[1] = u * uf;
646 out[2] = v * vf;
647 out[3] = a * af;
648 } else {
649 out[0] = a * yf;
650 out[1] = a * uf;
651 out[2] = a * vf;
652 out[3] = a * af;
653 }
654}
655
656static char *get_time(AVFilterContext *ctx, float seconds, int x)
657{
658 char *units;
659
660 if (x == 0)
661 units = av_asprintf("0");
662 else if (log10(seconds) > 6)
663 units = av_asprintf("%.2fh", seconds / (60 * 60));
664 else if (log10(seconds) > 3)
665 units = av_asprintf("%.2fm", seconds / 60);
666 else
667 units = av_asprintf("%.2fs", seconds);
668 return units;
669}
670
671static float log_scale(const float bin,
672 const float bmin, const float bmax,
673 const float min, const float max)
674{
675 return exp2f(((bin - bmin) / (bmax - bmin)) * (log2f(max) - log2f(min)) + log2f(min));
676}
677
678static float get_hz(const float bin, const float bmax,
679 const float min, const float max,
680 int fscale)
681{
682 switch (fscale) {
683 case F_LINEAR:
684 return min + (bin / bmax) * (max - min);
685 case F_LOG:
686 return min + log_scale(bin, 0, bmax, 20.f, max - min);
687 default:
688 return 0.f;
689 }
690}
691
692static float inv_log_scale(float bin,
693 float bmin, float bmax,
694 float min, float max)
695{
696 return (min * exp2f((bin * (log2f(max) - log2f(20.f))) / bmax) + min) * bmax / max;
697}
698
699static float bin_pos(const int bin, const int num_bins, const float min, const float max)
700{
701 return inv_log_scale(bin, 0.f, num_bins, 20.f, max - min);
702}
703
704static float get_scale(AVFilterContext *ctx, int scale, float a)
705{
706 ShowSpectrumContext *s = ctx->priv;
707 const float dmin = s->dmin;
708 const float dmax = s->dmax;
709
710 a = av_clipf(a, dmin, dmax);
711 if (scale != LOG)
712 a = (a - dmin) / (dmax - dmin);
713
714 switch (scale) {
715 case LINEAR:
716 break;
717 case SQRT:
718 a = sqrtf(a);
719 break;
720 case CBRT:
721 a = cbrtf(a);
722 break;
723 case FOURTHRT:
724 a = sqrtf(sqrtf(a));
725 break;
726 case FIFTHRT:
727 a = powf(a, 0.2f);
728 break;
729 case LOG:
730 a = (s->drange - s->limit + log10f(a) * 20.f) / s->drange;
731 break;
732 default:
733 av_assert0(0);
734 }
735
736 return a;
737}
738
739static float get_iscale(AVFilterContext *ctx, int scale, float a)
740{
741 ShowSpectrumContext *s = ctx->priv;
742 const float dmin = s->dmin;
743 const float dmax = s->dmax;
744
745 switch (scale) {
746 case LINEAR:
747 break;
748 case SQRT:
749 a = a * a;
750 break;
751 case CBRT:
752 a = a * a * a;
753 break;
754 case FOURTHRT:
755 a = a * a * a * a;
756 break;
757 case FIFTHRT:
758 a = a * a * a * a * a;
759 break;
760 case LOG:
761 a = expf(M_LN10 * (a * s->drange - s->drange + s->limit) / 20.f);
762 break;
763 default:
764 av_assert0(0);
765 }
766
767 if (scale != LOG)
768 a = a * (dmax - dmin) + dmin;
769
770 return a;
771}
772
773static int draw_legend(AVFilterContext *ctx, uint64_t samples)
774{
775 ShowSpectrumContext *s = ctx->priv;
776 AVFilterLink *inlink = ctx->inputs[0];
777 AVFilterLink *outlink = ctx->outputs[0];
778 int ch, y, x = 0, sz = s->orientation == VERTICAL ? s->w : s->h;
779 int multi = (s->mode == SEPARATE && s->color_mode == CHANNEL);
780 float spp = samples / (float)sz;
781 char *text;
782 uint8_t *dst;
783 char chlayout_str[128];
784
785 av_channel_layout_describe(&inlink->ch_layout, chlayout_str, sizeof(chlayout_str));
786
787 text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str);
788 if (!text)
789 return AVERROR(ENOMEM);
790
791 drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
792 drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
793 av_freep(&text);
794 if (s->stop) {
795 text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
796 if (!text)
797 return AVERROR(ENOMEM);
798 drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0);
799 av_freep(&text);
800 }
801
802 dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1;
803 for (x = 0; x < s->w + 1; x++)
804 dst[x] = 200;
805 dst = s->outpicref->data[0] + (s->start_y + s->h) * s->outpicref->linesize[0] + s->start_x - 1;
806 for (x = 0; x < s->w + 1; x++)
807 dst[x] = 200;
808 for (y = 0; y < s->h + 2; y++) {
809 dst = s->outpicref->data[0] + (y + s->start_y - 1) * s->outpicref->linesize[0];
810 dst[s->start_x - 1] = 200;
811 dst[s->start_x + s->w] = 200;
812 }
813 if (s->orientation == VERTICAL) {
814 int h = s->mode == SEPARATE ? s->h / s->nb_display_channels : s->h;
815 int hh = s->mode == SEPARATE ? -(s->h % s->nb_display_channels) + 1 : 1;
816 for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
817 for (y = 0; y < h; y += 20) {
818 dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
819 dst[s->start_x - 2] = 200;
820 dst[s->start_x + s->w + 1] = 200;
821 }
822 for (y = 0; y < h; y += 40) {
823 dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
824 dst[s->start_x - 3] = 200;
825 dst[s->start_x + s->w + 2] = 200;
826 }
827 dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x;
828 for (x = 0; x < s->w; x+=40)
829 dst[x] = 200;
830 dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x;
831 for (x = 0; x < s->w; x+=80)
832 dst[x] = 200;
833 dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x;
834 for (x = 0; x < s->w; x+=40) {
835 dst[x] = 200;
836 }
837 dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x;
838 for (x = 0; x < s->w; x+=80) {
839 dst[x] = 200;
840 }
841 for (y = 0; y < h; y += 40) {
842 float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
843 float hertz = get_hz(y, h, s->start, s->start + range, s->fscale);
844 char *units;
845
846 if (hertz == 0)
847 units = av_asprintf("DC");
848 else
849 units = av_asprintf("%.2f", hertz);
850 if (!units)
851 return AVERROR(ENOMEM);
852
853 drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, h * (ch + 1) + s->start_y - y - 4 - hh, units, 0);
854 av_free(units);
855 }
856 }
857
858 for (x = 0; x < s->w && s->single_pic; x+=80) {
859 float seconds = x * spp / inlink->sample_rate;
860 char *units = get_time(ctx, seconds, x);
861 if (!units)
862 return AVERROR(ENOMEM);
863
864 drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->h + s->start_y + 6, units, 0);
865 drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->start_y - 12, units, 0);
866 av_free(units);
867 }
868
869 drawtext(s->outpicref, outlink->w / 2 - 4 * 4, outlink->h - s->start_y / 2, "TIME", 0);
870 drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 14 * 4, "FREQUENCY (Hz)", 1);
871 } else {
872 int w = s->mode == SEPARATE ? s->w / s->nb_display_channels : s->w;
873 for (y = 0; y < s->h; y += 20) {
874 dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
875 dst[s->start_x - 2] = 200;
876 dst[s->start_x + s->w + 1] = 200;
877 }
878 for (y = 0; y < s->h; y += 40) {
879 dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
880 dst[s->start_x - 3] = 200;
881 dst[s->start_x + s->w + 2] = 200;
882 }
883 for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
884 dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
885 for (x = 0; x < w; x+=40)
886 dst[x] = 200;
887 dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x + w * ch;
888 for (x = 0; x < w; x+=80)
889 dst[x] = 200;
890 dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x + w * ch;
891 for (x = 0; x < w; x+=40) {
892 dst[x] = 200;
893 }
894 dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
895 for (x = 0; x < w; x+=80) {
896 dst[x] = 200;
897 }
898 for (x = 0; x < w - 79; x += 80) {
899 float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
900 float hertz = get_hz(x, w, s->start, s->start + range, s->fscale);
901 char *units;
902
903 if (hertz == 0)
904 units = av_asprintf("DC");
905 else
906 units = av_asprintf("%.2f", hertz);
907 if (!units)
908 return AVERROR(ENOMEM);
909
910 drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->start_y - 12, units, 0);
911 drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->h + s->start_y + 6, units, 0);
912 av_free(units);
913 }
914 }
915 for (y = 0; y < s->h && s->single_pic; y+=40) {
916 float seconds = y * spp / inlink->sample_rate;
917 char *units = get_time(ctx, seconds, x);
918 if (!units)
919 return AVERROR(ENOMEM);
920
921 drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, s->start_y + y - 4, units, 0);
922 av_free(units);
923 }
924 drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 4 * 4, "TIME", 1);
925 drawtext(s->outpicref, outlink->w / 2 - 14 * 4, outlink->h - s->start_y / 2, "FREQUENCY (Hz)", 0);
926 }
927
928 for (ch = 0; ch < (multi ? s->nb_display_channels : 1); ch++) {
929 int h = multi ? s->h / s->nb_display_channels : s->h;
930
931 for (y = 0; y < h; y++) {
932 float out[4] = { 0., 127.5, 127.5, 0.f};
933 int chn;
934
935 for (chn = 0; chn < (s->mode == SEPARATE ? 1 : s->nb_display_channels); chn++) {
936 float yf, uf, vf;
937 int channel = (multi) ? s->nb_display_channels - ch - 1 : chn;
938 float lout[4];
939
940 color_range(s, channel, &yf, &uf, &vf);
941 pick_color(s, yf, uf, vf, y / (float)h, lout);
942 out[0] += lout[0];
943 out[1] += lout[1];
944 out[2] += lout[2];
945 out[3] += lout[3];
946 }
947 memset(s->outpicref->data[0]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[0] + s->w + s->start_x + 20, av_clip_uint8(out[0]), 10);
948 memset(s->outpicref->data[1]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[1] + s->w + s->start_x + 20, av_clip_uint8(out[1]), 10);
949 memset(s->outpicref->data[2]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[2] + s->w + s->start_x + 20, av_clip_uint8(out[2]), 10);
950 if (s->outpicref->data[3])
951 memset(s->outpicref->data[3]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[3] + s->w + s->start_x + 20, av_clip_uint8(out[3]), 10);
952 }
953
954 for (y = 0; ch == 0 && y < h + 5; y += 25) {
955 const float a = av_clipf(1.f - y / (float)(h - 1), 0.f, 1.f);
956 const float value = s->scale == LOG ? log10f(get_iscale(ctx, s->scale, a)) * 20.f : get_iscale(ctx, s->scale, a);
957 char scale_fmt[32];
958
959 snprintf(scale_fmt, sizeof(scale_fmt),
960 s->scale == LOG ? "%.0f" : "%.3f", value);
961 drawtext(s->outpicref, s->w + s->start_x + 35, s->start_y + y - 3, scale_fmt, 0);
962 }
963 }
964
965 if (s->scale == LOG)
966 drawtext(s->outpicref, s->w + s->start_x + 22, s->start_y + s->h + 20, "dBFS", 0);
967
968 return 0;
969}
970
971static float get_value(AVFilterContext *ctx, int ch, int y)
972{
973 ShowSpectrumContext *s = ctx->priv;
974 float *magnitudes = s->magnitudes[ch];
975 float *phases = s->phases[ch];
976 float a;
977
978 switch (s->data) {
979 case D_MAGNITUDE:
980 /* get magnitude */
981 a = magnitudes[y];
982 break;
983 case D_UPHASE:
984 case D_PHASE:
985 /* get phase */
986 a = phases[y];
987 break;
988 default:
989 av_assert0(0);
990 }
991
992 return av_clipf(get_scale(ctx, s->scale, a), 0.f, 1.f);
993}
994
995static int plot_channel_lin(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
996{
997 ShowSpectrumContext *s = ctx->priv;
998 const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width;
999 const int ch = jobnr;
1000 float yf, uf, vf;
1001 int y;
1002
1003 /* decide color range */
1004 color_range(s, ch, &yf, &uf, &vf);
1005
1006 /* draw the channel */
1007 for (y = 0; y < h; y++) {
1008 int row = (s->mode == COMBINED) ? y : ch * h + y;
1009 float *out = &s->color_buffer[ch][4 * row];
1010 float a = get_value(ctx, ch, y);
1011
1012 pick_color(s, yf, uf, vf, a, out);
1013 }
1014
1015 return 0;
1016}
1017
1018static int plot_channel_log(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
1019{
1020 ShowSpectrumContext *s = ctx->priv;
1021 AVFilterLink *inlink = ctx->inputs[0];
1022 const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width;
1023 const int ch = jobnr;
1024 float yf, uf, vf;
1025
1026 /* decide color range */
1027 color_range(s, ch, &yf, &uf, &vf);
1028
1029 /* draw the channel */
1030 for (int yy = 0; yy < h; yy++) {
1031 float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
1032 float pos = bin_pos(yy, h, s->start, s->start + range);
1033 float delta = pos - floorf(pos);
1034 float a0, a1;
1035
1036 a0 = get_value(ctx, ch, av_clip(pos, 0, h-1));
1037 a1 = get_value(ctx, ch, av_clip(pos+1, 0, h-1));
1038 {
1039 int row = (s->mode == COMBINED) ? yy : ch * h + yy;
1040 float *out = &s->color_buffer[ch][4 * row];
1041
1042 pick_color(s, yf, uf, vf, delta * a1 + (1.f - delta) * a0, out);
1043 }
1044 }
1045
1046 return 0;
1047}
1048
1049static int config_output(AVFilterLink *outlink)
1050{
1051 FilterLink *l = ff_filter_link(outlink);
1052 AVFilterContext *ctx = outlink->src;
1053 AVFilterLink *inlink = ctx->inputs[0];
1054 ShowSpectrumContext *s = ctx->priv;
1055 int i, fft_size, h, w, ret;
1056 float overlap;
1057
1058 s->old_pts = AV_NOPTS_VALUE;
1059 s->dmax = expf(s->limit * M_LN10 / 20.f);
1060 s->dmin = expf((s->limit - s->drange) * M_LN10 / 20.f);
1061
1062 switch (s->fscale) {
1063 case F_LINEAR: s->plot_channel = plot_channel_lin; break;
1064 case F_LOG: s->plot_channel = plot_channel_log; break;
1065 default: return AVERROR_BUG;
1066 }
1067
1068 s->stop = FFMIN(s->stop, inlink->sample_rate / 2);
1069 if ((s->stop || s->start) && s->stop <= s->start) {
1070 av_log(ctx, AV_LOG_ERROR, "Stop frequency should be greater than start.\n");
1071 return AVERROR(EINVAL);
1072 }
1073
1074 if (!strcmp(ctx->filter->name, "showspectrumpic"))
1075 s->single_pic = 1;
1076
1077 outlink->w = s->w;
1078 outlink->h = s->h;
1079 outlink->sample_aspect_ratio = (AVRational){1,1};
1080
1081 if (s->legend) {
1082 s->start_x = (log10(inlink->sample_rate) + 1) * 25;
1083 s->start_y = 64;
1084 outlink->w += s->start_x * 2;
1085 outlink->h += s->start_y * 2;
1086 }
1087
1088 h = (s->mode == COMBINED || s->orientation == HORIZONTAL) ? s->h : s->h / inlink->ch_layout.nb_channels;
1089 w = (s->mode == COMBINED || s->orientation == VERTICAL) ? s->w : s->w / inlink->ch_layout.nb_channels;
1090 s->channel_height = h;
1091 s->channel_width = w;
1092
1093 if (s->orientation == VERTICAL) {
1094 /* FFT window size (precision) according to the requested output frame height */
1095 fft_size = h * 2;
1096 } else {
1097 /* FFT window size (precision) according to the requested output frame width */
1098 fft_size = w * 2;
1099 }
1100
1101 s->win_size = fft_size;
1102 s->buf_size = FFALIGN(s->win_size << (!!s->stop), av_cpu_max_align());
1103
1104 if (!s->fft) {
1105 s->fft = av_calloc(inlink->ch_layout.nb_channels, sizeof(*s->fft));
1106 if (!s->fft)
1107 return AVERROR(ENOMEM);
1108 }
1109
1110 if (s->stop) {
1111 if (!s->ifft) {
1112 s->ifft = av_calloc(inlink->ch_layout.nb_channels, sizeof(*s->ifft));
1113 if (!s->ifft)
1114 return AVERROR(ENOMEM);
1115 }
1116 }
1117
1118 /* (re-)configuration if the video output changed (or first init) */
1119 if (fft_size != s->fft_size) {
1120 AVFrame *outpicref;
1121
1122 s->fft_size = fft_size;
1123
1124 /* FFT buffers: x2 for each (display) channel buffer.
1125 * Note: we use free and malloc instead of a realloc-like function to
1126 * make sure the buffer is aligned in memory for the FFT functions. */
1127 for (i = 0; i < s->nb_display_channels; i++) {
1128 if (s->stop) {
1129 av_tx_uninit(&s->ifft[i]);
1130 av_freep(&s->fft_scratch[i]);
1131 }
1132 av_tx_uninit(&s->fft[i]);
1133 av_freep(&s->fft_in[i]);
1134 av_freep(&s->fft_data[i]);
1135 }
1136 av_freep(&s->fft_data);
1137
1138 s->nb_display_channels = inlink->ch_layout.nb_channels;
1139 for (i = 0; i < s->nb_display_channels; i++) {
1140 float scale = 1.f;
1141
1142 ret = av_tx_init(&s->fft[i], &s->tx_fn, AV_TX_FLOAT_FFT, 0, fft_size << (!!s->stop), &scale, 0);
1143 if (ret < 0) {
1144 av_log(ctx, AV_LOG_ERROR, "Unable to create FFT context. "
1145 "The window size might be too high.\n");
1146 return ret;
1147 }
1148 if (s->stop) {
1149 ret = av_tx_init(&s->ifft[i], &s->itx_fn, AV_TX_FLOAT_FFT, 1, fft_size << (!!s->stop), &scale, 0);
1150 if (ret < 0) {
1151 av_log(ctx, AV_LOG_ERROR, "Unable to create Inverse FFT context. "
1152 "The window size might be too high.\n");
1153 return ret;
1154 }
1155 }
1156 }
1157
1158 s->magnitudes = av_calloc(s->nb_display_channels, sizeof(*s->magnitudes));
1159 if (!s->magnitudes)
1160 return AVERROR(ENOMEM);
1161 for (i = 0; i < s->nb_display_channels; i++) {
1162 s->magnitudes[i] = av_calloc(s->orientation == VERTICAL ? s->h : s->w, sizeof(**s->magnitudes));
1163 if (!s->magnitudes[i])
1164 return AVERROR(ENOMEM);
1165 }
1166
1167 s->phases = av_calloc(s->nb_display_channels, sizeof(*s->phases));
1168 if (!s->phases)
1169 return AVERROR(ENOMEM);
1170 for (i = 0; i < s->nb_display_channels; i++) {
1171 s->phases[i] = av_calloc(s->orientation == VERTICAL ? s->h : s->w, sizeof(**s->phases));
1172 if (!s->phases[i])
1173 return AVERROR(ENOMEM);
1174 }
1175
1176 av_freep(&s->color_buffer);
1177 s->color_buffer = av_calloc(s->nb_display_channels, sizeof(*s->color_buffer));
1178 if (!s->color_buffer)
1179 return AVERROR(ENOMEM);
1180 for (i = 0; i < s->nb_display_channels; i++) {
1181 s->color_buffer[i] = av_calloc(s->orientation == VERTICAL ? s->h * 4 : s->w * 4, sizeof(**s->color_buffer));
1182 if (!s->color_buffer[i])
1183 return AVERROR(ENOMEM);
1184 }
1185
1186 s->fft_in = av_calloc(s->nb_display_channels, sizeof(*s->fft_in));
1187 if (!s->fft_in)
1188 return AVERROR(ENOMEM);
1189 s->fft_data = av_calloc(s->nb_display_channels, sizeof(*s->fft_data));
1190 if (!s->fft_data)
1191 return AVERROR(ENOMEM);
1192 s->fft_scratch = av_calloc(s->nb_display_channels, sizeof(*s->fft_scratch));
1193 if (!s->fft_scratch)
1194 return AVERROR(ENOMEM);
1195 for (i = 0; i < s->nb_display_channels; i++) {
1196 s->fft_in[i] = av_calloc(s->buf_size, sizeof(**s->fft_in));
1197 if (!s->fft_in[i])
1198 return AVERROR(ENOMEM);
1199
1200 s->fft_data[i] = av_calloc(s->buf_size, sizeof(**s->fft_data));
1201 if (!s->fft_data[i])
1202 return AVERROR(ENOMEM);
1203
1204 s->fft_scratch[i] = av_calloc(s->buf_size, sizeof(**s->fft_scratch));
1205 if (!s->fft_scratch[i])
1206 return AVERROR(ENOMEM);
1207 }
1208
1209 /* pre-calc windowing function */
1210 s->window_func_lut =
1211 av_realloc_f(s->window_func_lut, s->win_size,
1212 sizeof(*s->window_func_lut));
1213 if (!s->window_func_lut)
1214 return AVERROR(ENOMEM);
1215 generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap);
1216 if (s->overlap == 1)
1217 s->overlap = overlap;
1218 s->hop_size = (1.f - s->overlap) * s->win_size;
1219 if (s->hop_size < 1) {
1220 av_log(ctx, AV_LOG_ERROR, "overlap %f too big\n", s->overlap);
1221 return AVERROR(EINVAL);
1222 }
1223
1224 for (s->win_scale = 0, i = 0; i < s->win_size; i++) {
1225 s->win_scale += s->window_func_lut[i] * s->window_func_lut[i];
1226 }
1227 s->win_scale = 1.f / sqrtf(s->win_scale);
1228
1229 /* prepare the initial picref buffer (black frame) */
1230 av_frame_free(&s->outpicref);
1231 s->outpicref = outpicref =
1232 ff_get_video_buffer(outlink, outlink->w, outlink->h);
1233 if (!outpicref)
1234 return AVERROR(ENOMEM);
1235 outpicref->sample_aspect_ratio = (AVRational){1,1};
1236 for (i = 0; i < outlink->h; i++) {
1237 memset(outpicref->data[0] + i * outpicref->linesize[0], 0, outlink->w);
1238 memset(outpicref->data[1] + i * outpicref->linesize[1], 128, outlink->w);
1239 memset(outpicref->data[2] + i * outpicref->linesize[2], 128, outlink->w);
1240 if (outpicref->data[3])
1241 memset(outpicref->data[3] + i * outpicref->linesize[3], 0, outlink->w);
1242 }
1243 outpicref->color_range = AVCOL_RANGE_JPEG;
1244
1245 if (!s->single_pic && s->legend)
1246 draw_legend(ctx, 0);
1247 }
1248
1249 if ((s->orientation == VERTICAL && s->xpos >= s->w) ||
1250 (s->orientation == HORIZONTAL && s->xpos >= s->h))
1251 s->xpos = 0;
1252
1253 if (s->sliding == LREPLACE) {
1254 if (s->orientation == VERTICAL)
1255 s->xpos = s->w - 1;
1256 if (s->orientation == HORIZONTAL)
1257 s->xpos = s->h - 1;
1258 }
1259
1260 s->auto_frame_rate = av_make_q(inlink->sample_rate, s->hop_size);
1261 if (s->orientation == VERTICAL && s->sliding == FULLFRAME)
1262 s->auto_frame_rate = av_mul_q(s->auto_frame_rate, av_make_q(1, s->w));
1263 if (s->orientation == HORIZONTAL && s->sliding == FULLFRAME)
1264 s->auto_frame_rate = av_mul_q(s->auto_frame_rate, av_make_q(1, s->h));
1265 if (!s->single_pic && strcmp(s->rate_str, "auto")) {
1266 int ret = av_parse_video_rate(&s->frame_rate, s->rate_str);
1267 if (ret < 0)
1268 return ret;
1269 } else if (s->single_pic) {
1270 s->frame_rate = av_make_q(1, 1);
1271 } else {
1272 s->frame_rate = s->auto_frame_rate;
1273 }
1274 l->frame_rate = s->frame_rate;
1275 outlink->time_base = av_inv_q(l->frame_rate);
1276
1277 if (s->orientation == VERTICAL) {
1278 s->combine_buffer =
1279 av_realloc_f(s->combine_buffer, s->h * 4,
1280 sizeof(*s->combine_buffer));
1281 } else {
1282 s->combine_buffer =
1283 av_realloc_f(s->combine_buffer, s->w * 4,
1284 sizeof(*s->combine_buffer));
1285 }
1286 if (!s->combine_buffer)
1287 return AVERROR(ENOMEM);
1288
1289 av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d FFT window size:%d\n",
1290 s->w, s->h, s->win_size);
1291
1292 s->in_frame = ff_get_audio_buffer(inlink, s->win_size);
1293 if (!s->in_frame)
1294 return AVERROR(ENOMEM);
1295
1296 s->frames = av_fast_realloc(NULL, &s->frames_size,
1297 DEFAULT_LENGTH * sizeof(*(s->frames)));
1298 if (!s->frames)
1299 return AVERROR(ENOMEM);
1300
1301 return 0;
1302}
1303
1304#define RE(y, ch) s->fft_data[ch][y].re
1305#define IM(y, ch) s->fft_data[ch][y].im
1306#define MAGNITUDE(y, ch) hypotf(RE(y, ch), IM(y, ch))
1307#define PHASE(y, ch) atan2f(IM(y, ch), RE(y, ch))
1308
1309static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
1310{
1311 ShowSpectrumContext *s = ctx->priv;
1312 const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
1313 int y, h = s->orientation == VERTICAL ? s->h : s->w;
1314 const float f = s->gain * w;
1315 const int ch = jobnr;
1316 float *magnitudes = s->magnitudes[ch];
1317
1318 for (y = 0; y < h; y++)
1319 magnitudes[y] = MAGNITUDE(y, ch) * f;
1320
1321 return 0;
1322}
1323
1324static int calc_channel_phases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
1325{
1326 ShowSpectrumContext *s = ctx->priv;
1327 const int h = s->orientation == VERTICAL ? s->h : s->w;
1328 const int ch = jobnr;
1329 float *phases = s->phases[ch];
1330 int y;
1331
1332 for (y = 0; y < h; y++)
1333 phases[y] = (PHASE(y, ch) / M_PI + 1) / 2;
1334
1335 return 0;
1336}
1337
1338static void unwrap(float *x, int N, float tol, float *mi, float *ma)
1339{
1340 const float rng = 2.f * M_PI;
1341 float prev_p = 0.f;
1342 float max = -FLT_MAX;
1343 float min = FLT_MAX;
1344
1345 for (int i = 0; i < N; i++) {
1346 const float d = x[FFMIN(i + 1, N)] - x[i];
1347 const float p = ceilf(fabsf(d) / rng) * rng * (((d < tol) > 0.f) - ((d > -tol) > 0.f));
1348
1349 x[i] += p + prev_p;
1350 prev_p += p;
1351 max = fmaxf(x[i], max);
1352 min = fminf(x[i], min);
1353 }
1354
1355 *mi = min;
1356 *ma = max;
1357}
1358
1359static int calc_channel_uphases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
1360{
1361 ShowSpectrumContext *s = ctx->priv;
1362 const int h = s->orientation == VERTICAL ? s->h : s->w;
1363 const int ch = jobnr;
1364 float *phases = s->phases[ch];
1365 float min, max, scale;
1366 int y;
1367
1368 for (y = 0; y < h; y++)
1369 phases[y] = PHASE(y, ch);
1370 unwrap(phases, h, M_PI, &min, &max);
1371 scale = 1.f / (max - min + FLT_MIN);
1372 for (y = 0; y < h; y++)
1373 phases[y] = fabsf((phases[y] - min) * scale);
1374
1375 return 0;
1376}
1377
1378static void acalc_magnitudes(ShowSpectrumContext *s)
1379{
1380 const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
1381 int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
1382 const float f = s->gain * w;
1383
1384 for (ch = 0; ch < s->nb_display_channels; ch++) {
1385 float *magnitudes = s->magnitudes[ch];
1386
1387 for (y = 0; y < h; y++)
1388 magnitudes[y] += MAGNITUDE(y, ch) * f;
1389 }
1390}
1391
1392static void scale_magnitudes(ShowSpectrumContext *s, float scale)
1393{
1394 int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
1395
1396 for (ch = 0; ch < s->nb_display_channels; ch++) {
1397 float *magnitudes = s->magnitudes[ch];
1398
1399 for (y = 0; y < h; y++)
1400 magnitudes[y] *= scale;
1401 }
1402}
1403
1404static void clear_combine_buffer(ShowSpectrumContext *s, int size)
1405{
1406 int y;
1407
1408 for (y = 0; y < size; y++) {
1409 s->combine_buffer[4 * y ] = 0;
1410 s->combine_buffer[4 * y + 1] = 127.5;
1411 s->combine_buffer[4 * y + 2] = 127.5;
1412 s->combine_buffer[4 * y + 3] = 0;
1413 }
1414}
1415
1416static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
1417{
1418 AVFilterContext *ctx = inlink->dst;
1419 AVFilterLink *outlink = ctx->outputs[0];
1420 ShowSpectrumContext *s = ctx->priv;
1421 AVFrame *outpicref = s->outpicref;
1422 int ret, plane, x, y, z = s->orientation == VERTICAL ? s->h : s->w;
1423 const int alpha = outpicref->data[3] != NULL;
1424
1425 /* fill a new spectrum column */
1426 /* initialize buffer for combining to black */
1427 clear_combine_buffer(s, z);
1428
1429 ff_filter_execute(ctx, s->plot_channel, NULL, NULL, s->nb_display_channels);
1430
1431 for (y = 0; y < z * 4; y++) {
1432 for (x = 0; x < s->nb_display_channels; x++) {
1433 s->combine_buffer[y] += s->color_buffer[x][y];
1434 }
1435 }
1436
1437 ret = ff_inlink_make_frame_writable(outlink, &s->outpicref);
1438 if (ret < 0)
1439 return ret;
1440 outpicref = s->outpicref;
1441 /* copy to output */
1442 if (s->orientation == VERTICAL) {
1443 if (s->sliding == SCROLL) {
1444 for (plane = 0; plane < 3 + alpha; plane++) {
1445 for (y = 0; y < s->h; y++) {
1446 uint8_t *p = outpicref->data[plane] + s->start_x +
1447 (y + s->start_y) * outpicref->linesize[plane];
1448 memmove(p, p + 1, s->w - 1);
1449 }
1450 }
1451 s->xpos = s->w - 1;
1452 } else if (s->sliding == RSCROLL) {
1453 for (plane = 0; plane < 3 + alpha; plane++) {
1454 for (y = 0; y < s->h; y++) {
1455 uint8_t *p = outpicref->data[plane] + s->start_x +
1456 (y + s->start_y) * outpicref->linesize[plane];
1457 memmove(p + 1, p, s->w - 1);
1458 }
1459 }
1460 s->xpos = 0;
1461 }
1462 for (plane = 0; plane < 3; plane++) {
1463 uint8_t *p = outpicref->data[plane] + s->start_x +
1464 (outlink->h - 1 - s->start_y) * outpicref->linesize[plane] +
1465 s->xpos;
1466 for (y = 0; y < s->h; y++) {
1467 *p = lrintf(av_clipf(s->combine_buffer[4 * y + plane], 0, 255));
1468 p -= outpicref->linesize[plane];
1469 }
1470 }
1471 if (alpha) {
1472 uint8_t *p = outpicref->data[3] + s->start_x +
1473 (outlink->h - 1 - s->start_y) * outpicref->linesize[3] +
1474 s->xpos;
1475 for (y = 0; y < s->h; y++) {
1476 *p = lrintf(av_clipf(s->combine_buffer[4 * y + 3], 0, 255));
1477 p -= outpicref->linesize[3];
1478 }
1479 }
1480 } else {
1481 if (s->sliding == SCROLL) {
1482 for (plane = 0; plane < 3 + alpha; plane++) {
1483 for (y = 1; y < s->h; y++) {
1484 memmove(outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x,
1485 outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x,
1486 s->w);
1487 }
1488 }
1489 s->xpos = s->h - 1;
1490 } else if (s->sliding == RSCROLL) {
1491 for (plane = 0; plane < 3 + alpha; plane++) {
1492 for (y = s->h - 1; y >= 1; y--) {
1493 memmove(outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x,
1494 outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x,
1495 s->w);
1496 }
1497 }
1498 s->xpos = 0;
1499 }
1500 for (plane = 0; plane < 3; plane++) {
1501 uint8_t *p = outpicref->data[plane] + s->start_x +
1502 (s->xpos + s->start_y) * outpicref->linesize[plane];
1503 for (x = 0; x < s->w; x++) {
1504 *p = lrintf(av_clipf(s->combine_buffer[4 * x + plane], 0, 255));
1505 p++;
1506 }
1507 }
1508 if (alpha) {
1509 uint8_t *p = outpicref->data[3] + s->start_x +
1510 (s->xpos + s->start_y) * outpicref->linesize[3];
1511 for (x = 0; x < s->w; x++) {
1512 *p = lrintf(av_clipf(s->combine_buffer[4 * x + 3], 0, 255));
1513 p++;
1514 }
1515 }
1516 }
1517
1518 if (s->sliding != FULLFRAME || s->xpos == 0)
1519 s->pts = outpicref->pts = av_rescale_q(s->in_pts, inlink->time_base, outlink->time_base);
1520
1521 if (s->sliding == LREPLACE) {
1522 s->xpos--;
1523 if (s->orientation == VERTICAL && s->xpos < 0)
1524 s->xpos = s->w - 1;
1525 if (s->orientation == HORIZONTAL && s->xpos < 0)
1526 s->xpos = s->h - 1;
1527 } else {
1528 s->xpos++;
1529 if (s->orientation == VERTICAL && s->xpos >= s->w)
1530 s->xpos = 0;
1531 if (s->orientation == HORIZONTAL && s->xpos >= s->h)
1532 s->xpos = 0;
1533 }
1534
1535 if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) {
1536 if (s->old_pts < outpicref->pts || s->sliding == FULLFRAME ||
1537 (s->eof && ff_inlink_queued_samples(inlink) <= s->hop_size)) {
1538 AVFrame *clone;
1539
1540 if (s->legend) {
1541 char *units = get_time(ctx, insamples->pts /(float)inlink->sample_rate, x);
1542 if (!units)
1543 return AVERROR(ENOMEM);
1544
1545 if (s->orientation == VERTICAL) {
1546 for (y = 0; y < 10; y++) {
1547 memset(s->outpicref->data[0] + outlink->w / 2 - 4 * s->old_len +
1548 (outlink->h - s->start_y / 2 - 20 + y) * s->outpicref->linesize[0], 0, 10 * s->old_len);
1549 }
1550 drawtext(s->outpicref,
1551 outlink->w / 2 - 4 * strlen(units),
1552 outlink->h - s->start_y / 2 - 20,
1553 units, 0);
1554 } else {
1555 for (y = 0; y < 10 * s->old_len; y++) {
1556 memset(s->outpicref->data[0] + s->start_x / 7 + 20 +
1557 (outlink->h / 2 - 4 * s->old_len + y) * s->outpicref->linesize[0], 0, 10);
1558 }
1559 drawtext(s->outpicref,
1560 s->start_x / 7 + 20,
1561 outlink->h / 2 - 4 * strlen(units),
1562 units, 1);
1563 }
1564 s->old_len = strlen(units);
1565 av_free(units);
1566 }
1567 s->old_pts = outpicref->pts;
1568 clone = av_frame_clone(s->outpicref);
1569 if (!clone)
1570 return AVERROR(ENOMEM);
1571 ret = ff_filter_frame(outlink, clone);
1572 if (ret < 0)
1573 return ret;
1574 return 0;
1575 }
1576 }
1577
1578 return 1;
1579}
1580
1581#if CONFIG_SHOWSPECTRUM_FILTER
1582
1583static int activate(AVFilterContext *ctx)
1584{
1585 AVFilterLink *inlink = ctx->inputs[0];
1586 AVFilterLink *outlink = ctx->outputs[0];
1587 ShowSpectrumContext *s = ctx->priv;
1588 int ret, status;
1589 int64_t pts;
1590
1591 FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
1592
1593 if (s->outpicref && ff_inlink_queued_samples(inlink) > 0) {
1594 AVFrame *fin;
1595
1596 ret = ff_inlink_consume_samples(inlink, s->hop_size, s->hop_size, &fin);
1597 if (ret < 0)
1598 return ret;
1599 if (ret > 0) {
1600 ff_filter_execute(ctx, run_channel_fft, fin, NULL, s->nb_display_channels);
1601
1602 if (s->data == D_MAGNITUDE)
1603 ff_filter_execute(ctx, calc_channel_magnitudes, NULL, NULL, s->nb_display_channels);
1604
1605 if (s->data == D_PHASE)
1606 ff_filter_execute(ctx, calc_channel_phases, NULL, NULL, s->nb_display_channels);
1607
1608 if (s->data == D_UPHASE)
1609 ff_filter_execute(ctx, calc_channel_uphases, NULL, NULL, s->nb_display_channels);
1610
1611 if (s->sliding != FULLFRAME || s->xpos == 0)
1612 s->in_pts = fin->pts;
1613 ret = plot_spectrum_column(inlink, fin);
1614 av_frame_free(&fin);
1615 if (ret <= 0)
1616 return ret;
1617 }
1618 }
1619
1620 if (s->eof && s->sliding == FULLFRAME &&
1621 s->xpos > 0 && s->outpicref) {
1622
1623 if (s->orientation == VERTICAL) {
1624 for (int i = 0; i < outlink->h; i++) {
1625 memset(s->outpicref->data[0] + i * s->outpicref->linesize[0] + s->xpos, 0, outlink->w - s->xpos);
1626 memset(s->outpicref->data[1] + i * s->outpicref->linesize[1] + s->xpos, 128, outlink->w - s->xpos);
1627 memset(s->outpicref->data[2] + i * s->outpicref->linesize[2] + s->xpos, 128, outlink->w - s->xpos);
1628 if (s->outpicref->data[3])
1629 memset(s->outpicref->data[3] + i * s->outpicref->linesize[3] + s->xpos, 0, outlink->w - s->xpos);
1630 }
1631 } else {
1632 for (int i = s->xpos; i < outlink->h; i++) {
1633 memset(s->outpicref->data[0] + i * s->outpicref->linesize[0], 0, outlink->w);
1634 memset(s->outpicref->data[1] + i * s->outpicref->linesize[1], 128, outlink->w);
1635 memset(s->outpicref->data[2] + i * s->outpicref->linesize[2], 128, outlink->w);
1636 if (s->outpicref->data[3])
1637 memset(s->outpicref->data[3] + i * s->outpicref->linesize[3], 0, outlink->w);
1638 }
1639 }
1640 s->outpicref->pts = av_rescale_q(s->in_pts, inlink->time_base, outlink->time_base);
1641 pts = s->outpicref->pts;
1642 ret = ff_filter_frame(outlink, s->outpicref);
1643 s->outpicref = NULL;
1644 ff_outlink_set_status(outlink, AVERROR_EOF, pts);
1645 return 0;
1646 }
1647
1648 if (!s->eof && ff_inlink_acknowledge_status(inlink, &status, &pts)) {
1649 s->eof = status == AVERROR_EOF;
1650 ff_filter_set_ready(ctx, 100);
1651 return 0;
1652 }
1653
1654 if (s->eof) {
1655 ff_outlink_set_status(outlink, AVERROR_EOF, s->pts);
1656 return 0;
1657 }
1658
1659 if (ff_inlink_queued_samples(inlink) >= s->hop_size) {
1660 ff_filter_set_ready(ctx, 10);
1661 return 0;
1662 }
1663
1664 if (ff_outlink_frame_wanted(outlink)) {
1665 ff_inlink_request_frame(inlink);
1666 return 0;
1667 }
1668
1669 return FFERROR_NOT_READY;
1670}
1671
1672static const AVFilterPad showspectrum_outputs[] = {
1673 {
1674 .name = "default",
1675 .type = AVMEDIA_TYPE_VIDEO,
1676 .config_props = config_output,
1677 },
1678};
1679
1680const FFFilter ff_avf_showspectrum = {
1681 .p.name = "showspectrum",
1682 .p.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output."),
1683 .p.priv_class = &showspectrum_class,
1684 .p.flags = AVFILTER_FLAG_SLICE_THREADS,
1685 .uninit = uninit,
1686 .priv_size = sizeof(ShowSpectrumContext),
1687 FILTER_INPUTS(ff_audio_default_filterpad),
1688 FILTER_OUTPUTS(showspectrum_outputs),
1689 FILTER_QUERY_FUNC2(query_formats),
1690 .activate = activate,
1691};
1692#endif // CONFIG_SHOWSPECTRUM_FILTER
1693
1694#if CONFIG_SHOWSPECTRUMPIC_FILTER
1695
1696static const AVOption showspectrumpic_options[] = {
1697 { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "4096x2048"}, 0, 0, FLAGS },
1698 { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "4096x2048"}, 0, 0, FLAGS },
1699 { "mode", "set channel display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=COMBINED}, 0, NB_MODES-1, FLAGS, .unit = "mode" },
1700 { "combined", "combined mode", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, .unit = "mode" },
1701 { "separate", "separate mode", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, .unit = "mode" },
1702 { "color", "set channel coloring", OFFSET(color_mode), AV_OPT_TYPE_INT, {.i64=INTENSITY}, 0, NB_CLMODES-1, FLAGS, .unit = "color" },
1703 { "channel", "separate color for each channel", 0, AV_OPT_TYPE_CONST, {.i64=CHANNEL}, 0, 0, FLAGS, .unit = "color" },
1704 { "intensity", "intensity based coloring", 0, AV_OPT_TYPE_CONST, {.i64=INTENSITY}, 0, 0, FLAGS, .unit = "color" },
1705 { "rainbow", "rainbow based coloring", 0, AV_OPT_TYPE_CONST, {.i64=RAINBOW}, 0, 0, FLAGS, .unit = "color" },
1706 { "moreland", "moreland based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MORELAND}, 0, 0, FLAGS, .unit = "color" },
1707 { "nebulae", "nebulae based coloring", 0, AV_OPT_TYPE_CONST, {.i64=NEBULAE}, 0, 0, FLAGS, .unit = "color" },
1708 { "fire", "fire based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIRE}, 0, 0, FLAGS, .unit = "color" },
1709 { "fiery", "fiery based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIERY}, 0, 0, FLAGS, .unit = "color" },
1710 { "fruit", "fruit based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FRUIT}, 0, 0, FLAGS, .unit = "color" },
1711 { "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, .unit = "color" },
1712 { "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, .unit = "color" },
1713 { "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, .unit = "color" },
1714 { "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, .unit = "color" },
1715 { "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, .unit = "color" },
1716 { "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, .unit = "color" },
1717 { "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, .unit = "color" },
1718 { "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, 0, NB_SCALES-1, FLAGS, .unit = "scale" },
1719 { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, .unit = "scale" },
1720 { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, .unit = "scale" },
1721 { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, .unit = "scale" },
1722 { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, .unit = "scale" },
1723 { "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, .unit = "scale" },
1724 { "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, .unit = "scale" },
1725 { "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, .unit = "fscale" },
1726 { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, .unit = "fscale" },
1727 { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, .unit = "fscale" },
1728 { "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS },
1729 WIN_FUNC_OPTION("win_func", OFFSET(win_func), FLAGS, WFUNC_HANNING),
1730 { "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, .unit = "orientation" },
1731 { "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, .unit = "orientation" },
1732 { "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, .unit = "orientation" },
1733 { "gain", "set scale gain", OFFSET(gain), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 128, FLAGS },
1734 { "legend", "draw legend", OFFSET(legend), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
1735 { "rotation", "color rotation", OFFSET(rotation), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -1, 1, FLAGS },
1736 { "start", "start frequency", OFFSET(start), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
1737 { "stop", "stop frequency", OFFSET(stop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
1738 { "drange", "set dynamic range in dBFS", OFFSET(drange), AV_OPT_TYPE_FLOAT, {.dbl = 120}, 10, 200, FLAGS },
1739 { "limit", "set upper limit in dBFS", OFFSET(limit), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -100, 100, FLAGS },
1740 { "opacity", "set opacity strength", OFFSET(opacity_factor), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 10, FLAGS },
1741 { NULL }
1742};
1743
1744AVFILTER_DEFINE_CLASS(showspectrumpic);
1745
1746static int showspectrumpic_request_frame(AVFilterLink *outlink)
1747{
1748 AVFilterContext *ctx = outlink->src;
1749 ShowSpectrumContext *s = ctx->priv;
1750 AVFilterLink *inlink = ctx->inputs[0];
1751 int ret;
1752
1753 ret = ff_request_frame(inlink);
1754 if (ret == AVERROR_EOF && s->outpicref && s->samples > 0) {
1755 int consumed = 0;
1756 int x = 0, sz = s->orientation == VERTICAL ? s->w : s->h;
1757 unsigned int nb_frame = 0;
1758 int ch, spf, spb;
1759 int src_offset = 0;
1760 AVFrame *fin;
1761
1762 spf = s->win_size * (s->samples / ((s->win_size * sz) * ceil(s->samples / (float)(s->win_size * sz))));
1763 spf = FFMAX(1, spf);
1764 s->hop_size = spf;
1765
1766 spb = (s->samples / (spf * sz)) * spf;
1767
1768 fin = ff_get_audio_buffer(inlink, spf);
1769 if (!fin)
1770 return AVERROR(ENOMEM);
1771
1772 while (x < sz) {
1773 int acc_samples = 0;
1774 int dst_offset = 0;
1775
1776 while (nb_frame < s->nb_frames) {
1777 AVFrame *cur_frame = s->frames[nb_frame];
1778 int cur_frame_samples = cur_frame->nb_samples;
1779 int nb_samples = 0;
1780
1781 if (acc_samples < spf) {
1782 nb_samples = FFMIN(spf - acc_samples, cur_frame_samples - src_offset);
1783 acc_samples += nb_samples;
1784 av_samples_copy(fin->extended_data, cur_frame->extended_data,
1785 dst_offset, src_offset, nb_samples,
1786 cur_frame->ch_layout.nb_channels, AV_SAMPLE_FMT_FLTP);
1787 }
1788
1789 src_offset += nb_samples;
1790 dst_offset += nb_samples;
1791 if (cur_frame_samples <= src_offset) {
1792 av_frame_free(&s->frames[nb_frame]);
1793 nb_frame++;
1794 src_offset = 0;
1795 }
1796
1797 if (acc_samples == spf)
1798 break;
1799 }
1800
1801 ff_filter_execute(ctx, run_channel_fft, fin, NULL, s->nb_display_channels);
1802 acalc_magnitudes(s);
1803
1804 consumed += spf;
1805 if (consumed >= spb) {
1806 int h = s->orientation == VERTICAL ? s->h : s->w;
1807
1808 scale_magnitudes(s, 1.f / (consumed / spf));
1809 plot_spectrum_column(inlink, fin);
1810 consumed = 0;
1811 x++;
1812 for (ch = 0; ch < s->nb_display_channels; ch++)
1813 memset(s->magnitudes[ch], 0, h * sizeof(float));
1814 }
1815 }
1816
1817 av_frame_free(&fin);
1818 s->outpicref->pts = 0;
1819
1820 if (s->legend)
1821 draw_legend(ctx, s->samples);
1822
1823 ret = ff_filter_frame(outlink, s->outpicref);
1824 s->outpicref = NULL;
1825 }
1826
1827 return ret;
1828}
1829
1830static int showspectrumpic_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
1831{
1832 AVFilterContext *ctx = inlink->dst;
1833 ShowSpectrumContext *s = ctx->priv;
1834 void *ptr;
1835
1836 if (s->nb_frames + 1ULL > s->frames_size / sizeof(*(s->frames))) {
1837 ptr = av_fast_realloc(s->frames, &s->frames_size, s->frames_size * 2);
1838 if (!ptr)
1839 return AVERROR(ENOMEM);
1840 s->frames = ptr;
1841 }
1842
1843 s->frames[s->nb_frames] = insamples;
1844 s->samples += insamples->nb_samples;
1845 s->nb_frames++;
1846
1847 return 0;
1848}
1849
1850static const AVFilterPad showspectrumpic_inputs[] = {
1851 {
1852 .name = "default",
1853 .type = AVMEDIA_TYPE_AUDIO,
1854 .filter_frame = showspectrumpic_filter_frame,
1855 },
1856};
1857
1858static const AVFilterPad showspectrumpic_outputs[] = {
1859 {
1860 .name = "default",
1861 .type = AVMEDIA_TYPE_VIDEO,
1862 .config_props = config_output,
1863 .request_frame = showspectrumpic_request_frame,
1864 },
1865};
1866
1867const FFFilter ff_avf_showspectrumpic = {
1868 .p.name = "showspectrumpic",
1869 .p.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output single picture."),
1870 .p.priv_class = &showspectrumpic_class,
1871 .p.flags = AVFILTER_FLAG_SLICE_THREADS,
1872 .uninit = uninit,
1873 .priv_size = sizeof(ShowSpectrumContext),
1874 FILTER_INPUTS(showspectrumpic_inputs),
1875 FILTER_OUTPUTS(showspectrumpic_outputs),
1876 FILTER_QUERY_FUNC2(query_formats),
1877};
1878
1879#endif // CONFIG_SHOWSPECTRUMPIC_FILTER
vf
uint8_t ptrdiff_t const uint8_t ptrdiff_t int const int8_t const int8_t * vf
Definition dsp.h:262
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition dsp.h:87
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition adpcmenc.c:933
SQRT
#define SQRT
Definition adynamicequalizer_template.c:58
query_formats
static int query_formats(const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
Definition aeval.c:246
NB_DMODES
@ NB_DMODES
Definition af_adynamicequalizer.c:35
NB_MODES
@ NB_MODES
Definition af_afftdn.c:48
float
float
Definition af_crystalizer.c:122
N
#define N
Definition af_mcompand.c:54
ff_avf_showspectrumpic
const FFFilter ff_avf_showspectrumpic
ff_avf_showspectrum
const FFFilter ff_avf_showspectrum
L
#define L(x)
Definition vpx_arith.h:36
ff_audio_default_filterpad
const AVFilterPad ff_audio_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_AUDIO.
Definition audio.c:34
ff_get_audio_buffer
AVFrame * ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
Request an audio samples buffer with a specific set of permissions.
Definition audio.c:74
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition avassert.h:42
SlideMode
SlideMode
Definition avf_ahistogram.c:31
SCROLL
@ SCROLL
Definition avf_ahistogram.c:31
REPLACE
@ REPLACE
Definition avf_ahistogram.c:31
NB_SLIDES
@ NB_SLIDES
Definition avf_ahistogram.c:31
DisplayScale
DisplayScale
Definition avf_ahistogram.c:29
NB_SCALES
@ NB_SCALES
Definition avf_ahistogram.c:29
DisplayMode
DisplayMode
Definition avf_ahistogram.c:32
SEPARATE
@ SEPARATE
Definition avf_ahistogram.c:32
FrequencyScale
FrequencyScale
Definition avf_showcwt.c:37
COMBINED
@ COMBINED
Definition avf_showfreqs.c:41
DataMode
DataMode
Definition avf_showfreqs.c:39
NB_FSCALES
@ NB_FSCALES
Definition avf_showfreqs.c:42
run_channel_fft
static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspatial.c:108
MAGNITUDE
#define MAGNITUDE(y, ch)
Definition avf_showspectrum.c:1306
PHASE
#define PHASE(y, ch)
Definition avf_showspectrum.c:1307
unwrap
static void unwrap(float *x, int N, float tol, float *mi, float *ma)
Definition avf_showspectrum.c:1338
ColorMode
ColorMode
Definition avf_showspectrum.c:55
NEBULAE
@ NEBULAE
Definition avf_showspectrum.c:55
MORELAND
@ MORELAND
Definition avf_showspectrum.c:55
VIRIDIS
@ VIRIDIS
Definition avf_showspectrum.c:55
MAGMA
@ MAGMA
Definition avf_showspectrum.c:55
INTENSITY
@ INTENSITY
Definition avf_showspectrum.c:55
COOL
@ COOL
Definition avf_showspectrum.c:55
TERRAIN
@ TERRAIN
Definition avf_showspectrum.c:55
FRUIT
@ FRUIT
Definition avf_showspectrum.c:55
FIRE
@ FIRE
Definition avf_showspectrum.c:55
PLASMA
@ PLASMA
Definition avf_showspectrum.c:55
CIVIDIS
@ CIVIDIS
Definition avf_showspectrum.c:55
NB_CLMODES
@ NB_CLMODES
Definition avf_showspectrum.c:55
CHANNEL
@ CHANNEL
Definition avf_showspectrum.c:55
RAINBOW
@ RAINBOW
Definition avf_showspectrum.c:55
FIERY
@ FIERY
Definition avf_showspectrum.c:55
get_iscale
static float get_iscale(AVFilterContext *ctx, int scale, float a)
Definition avf_showspectrum.c:739
bin_pos
static float bin_pos(const int bin, const int num_bins, const float min, const float max)
Definition avf_showspectrum.c:699
FULLFRAME
@ FULLFRAME
Definition avf_showspectrum.c:56
LREPLACE
@ LREPLACE
Definition avf_showspectrum.c:56
RSCROLL
@ RSCROLL
Definition avf_showspectrum.c:56
D_MAGNITUDE
@ D_MAGNITUDE
Definition avf_showspectrum.c:52
D_UPHASE
@ D_UPHASE
Definition avf_showspectrum.c:52
D_PHASE
@ D_PHASE
Definition avf_showspectrum.c:52
clear_combine_buffer
static void clear_combine_buffer(ShowSpectrumContext *s, int size)
Definition avf_showspectrum.c:1404
calc_channel_uphases
static int calc_channel_uphases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:1359
pick_color
static void pick_color(ShowSpectrumContext *s, float yf, float uf, float vf, float a, float *out)
Definition avf_showspectrum.c:608
FIFTHRT
@ FIFTHRT
Definition avf_showspectrum.c:54
FOURTHRT
@ FOURTHRT
Definition avf_showspectrum.c:54
get_value
static float get_value(AVFilterContext *ctx, int ch, int y)
Definition avf_showspectrum.c:971
DEFAULT_LENGTH
#define DEFAULT_LENGTH
Definition avf_showspectrum.c:59
calc_channel_phases
static int calc_channel_phases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:1324
acalc_magnitudes
static void acalc_magnitudes(ShowSpectrumContext *s)
Definition avf_showspectrum.c:1378
F_LINEAR
@ F_LINEAR
Definition avf_showspectrum.c:53
F_LOG
@ F_LOG
Definition avf_showspectrum.c:53
plot_channel_log
static int plot_channel_log(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:1018
log_scale
static float log_scale(const float bin, const float bmin, const float bmax, const float min, const float max)
Definition avf_showspectrum.c:671
get_time
static char * get_time(AVFilterContext *ctx, float seconds, int x)
Definition avf_showspectrum.c:656
plot_spectrum_column
static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
Definition avf_showspectrum.c:1416
Orientation
Orientation
Definition avf_showspectrum.c:57
VERTICAL
@ VERTICAL
Definition avf_showspectrum.c:57
HORIZONTAL
@ HORIZONTAL
Definition avf_showspectrum.c:57
NB_ORIENTATIONS
@ NB_ORIENTATIONS
Definition avf_showspectrum.c:57
drawtext
static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
Definition avf_showspectrum.c:491
get_hz
static float get_hz(const float bin, const float bmax, const float min, const float max, int fscale)
Definition avf_showspectrum.c:678
query_formats
static int query_formats(const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
Definition avf_showspectrum.c:362
draw_legend
static int draw_legend(AVFilterContext *ctx, uint64_t samples)
Definition avf_showspectrum.c:773
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition avf_showspectrum.c:304
inv_log_scale
static float inv_log_scale(float bin, float bmin, float bmax, float min, float max)
Definition avf_showspectrum.c:692
OFFSET
#define OFFSET(x)
Definition avf_showspectrum.c:123
config_output
static int config_output(AVFilterLink *outlink)
Definition avf_showspectrum.c:1049
showspectrum_options
static const AVOption showspectrum_options[]
Definition avf_showspectrum.c:126
calc_channel_magnitudes
static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:1309
run_channel_fft
static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:384
scale_magnitudes
static void scale_magnitudes(ShowSpectrumContext *s, float scale)
Definition avf_showspectrum.c:1392
get_scale
static float get_scale(AVFilterContext *ctx, int scale, float a)
Definition avf_showspectrum.c:704
plot_channel_lin
static int plot_channel_lin(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:995
ff_inlink_acknowledge_status
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
Definition avfilter.c:1467
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition avfilter.c:1068
ff_outlink_frame_wanted
int ff_outlink_frame_wanted(AVFilterLink *link)
Test if a frame is wanted on an output link.
Definition avfilter.c:1690
ff_request_frame
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition avfilter.c:483
ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition avfilter.c:1696
ff_inlink_consume_samples
int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max, AVFrame **rframe)
Take samples from the link's FIFO and update the link's stats.
Definition avfilter.c:1540
ff_filter_set_ready
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
Definition avfilter.c:229
ff_inlink_make_frame_writable
int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
Make sure a frame is writable.
Definition avfilter.c:1567
ff_inlink_queued_samples
int ff_inlink_queued_samples(AVFilterLink *link)
Definition avfilter.c:1495
ff_inlink_request_frame
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
Definition avfilter.c:1623
avfilter.h
Main libavfilter public API header.
av_asprintf
char * av_asprintf(const char *fmt,...)
Definition avstring.c:115
CBRT
#define CBRT(x)
Definition cbrt_tablegen.h:37
i
#define i(width, name, range_min, range_max)
Definition cbs_h264.c:63
f
#define f(width, name)
Definition cbs_vp8.c:236
s
#define s(width, name)
Definition cbs_vp9.c:198
channel_layout.h
Public libavutil channel layout APIs header.
FLAGS
#define FLAGS
Definition cmdutils.c:598
saturation
static IPT saturation(const CmsCtx *ctx, IPT ipt)
Definition cms.c:559
av_clip
#define av_clip
Definition common.h:100
av_clip_uint8
#define av_clip_uint8
Definition common.h:106
av_clipf
#define av_clipf
Definition common.h:145
NULL
#define NULL
Definition coverity.c:32
int64_t
long long int64_t
Definition coverity.c:34
sqrtf
static __device__ float sqrtf(float a)
Definition cuda_runtime.h:184
ceil
static __device__ float ceil(float a)
Definition cuda_runtime.h:176
fabsf
static __device__ float fabsf(float a)
Definition cuda_runtime.h:181
floorf
static __device__ float floorf(float a)
Definition cuda_runtime.h:172
min
#define min(a, b)
Definition cuda_runtime.h:34
ceilf
static __device__ float ceilf(float a)
Definition cuda_runtime.h:175
max
#define max(a, b)
Definition cuda_runtime.h:33
fminf
float fminf(float, float)
fmaxf
float fmaxf(float, float)
cm
#define cm
Definition dvbsubdec.c:40
channel
channel
Use these values when setting the channel map with ebur128_set_channel().
Definition ebur128.h:39
value
double value
Definition eval.c:102
M
#define M(chr)
Definition exr.c:177
S
#define S(s, c, i)
Definition flacdsp_template.c:46
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add ref as a new reference to formats.
Definition formats.c:756
ff_make_sample_format_list
av_warn_unused_result AVFilterFormats * ff_make_sample_format_list(const enum AVSampleFormat *fmts)
Create a list of supported sample formats.
ff_make_pixel_format_list
av_warn_unused_result AVFilterFormats * ff_make_pixel_format_list(const enum AVPixelFormat *fmts)
Create a list of supported pixel formats.
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
Underlying C type is two consecutive integers.
Definition opt.h:302
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition opt.h:298
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition opt.h:258
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
Definition opt.h:270
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition opt.h:326
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition opt.h:275
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition avfilter.h:166
av_channel_layout_describe
int av_channel_layout_describe(const AVChannelLayout *channel_layout, char *buf, size_t buf_size)
Get a human-readable string describing the channel layout properties.
Definition channel_layout.c:654
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition error.h:52
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition error.h:57
AVERROR
#define AVERROR(e)
Definition error.h:45
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition frame.c:64
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition frame.c:483
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition log.h:226
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition log.h:210
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition rational.c:80
av_make_q
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition rational.h:71
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition rational.h:159
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition mathematics.c:142
av_fast_realloc
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition mem.c:495
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition avutil.h:201
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition avutil.h:200
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition samplefmt.h:55
AV_SAMPLE_FMT_FLTP
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition samplefmt.h:66
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition samplefmt.h:56
av_samples_copy
int av_samples_copy(uint8_t *const *dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples from src to dst.
Definition samplefmt.c:222
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition avutil.h:247
a
int a
Definition h264pred_template.c:416
alpha
static const int16_t alpha[]
Definition ilbcdata.h:55
b
#define b
Definition input.c:43
scale
static void scale(int *out, const int *in, const int w, const int h, const int shift)
Definition intra.c:278
uninit
static av_cold void uninit(AVBitStreamFilterContext *ctx)
Definition lcevc_merge.c:135
activate
static int activate(AVBitStreamFilterContext *ctx)
Definition lcevc_merge.c:144
config_output
static int config_output(AVBitStreamFilterLink *outlink)
Definition lcevc_merge.c:111
u
#define u(width, name, range_min, range_max)
Definition cbs_apv.c:68
arg
const char * arg
Definition jacosubdec.c:65
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition filters.h:264
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition filters.h:265
ff_outlink_set_status
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
Definition filters.h:629
FFERROR_NOT_READY
#define FFERROR_NOT_READY
Filters implementation helper functions and internal structures.
Definition filters.h:34
FF_FILTER_FORWARD_STATUS_BACK
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition filters.h:639
ff_filter_link
static FilterLink * ff_filter_link(AVFilterLink *link)
Definition filters.h:199
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition filters.h:478
FILTER_QUERY_FUNC2
#define FILTER_QUERY_FUNC2(func)
Definition filters.h:241
av_cold
#define av_cold
Definition attributes.h:117
av_cpu_max_align
size_t av_cpu_max_align(void)
Get the maximum data alignment that may be required by FFmpeg.
Definition cpu.c:287
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition internal.h:88
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition libkvazaar.c:296
sinf
#define sinf(x)
Definition libm.h:421
cosf
#define cosf(x)
Definition libm.h:80
log2f
#define log2f(x)
Definition libm.h:411
expf
#define expf(x)
Definition libm.h:285
cbrtf
static av_always_inline float cbrtf(float x)
Definition libm.h:63
log10f
#define log10f(x)
Definition libm.h:416
exp2f
#define exp2f(x)
Definition libm.h:295
powf
#define powf(x, y)
Definition libm.h:52
lrintf
#define lrintf(x)
Definition libm_mips.h:72
w
uint8_t w
Definition llvidencdsp.c:39
mask
static const uint16_t mask[17]
Definition lzw.c:38
FFMIN
#define FFMIN(a, b)
Definition macros.h:49
FFMAX
#define FFMAX(a, b)
Definition macros.h:47
FFALIGN
#define FFALIGN(x, a)
Definition macros.h:78
M_LN10
#define M_LN10
Definition mathematics.h:49
M_PI_2
#define M_PI_2
Definition mathematics.h:73
M_PI
#define M_PI
Definition mathematics.h:67
range
enum AVColorRange range
Definition mediacodec_wrapper.c:2594
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition mem.c:264
mem.h
Memory handling functions.
data
const char data[16]
Definition mxf.c:149
opt.h
AVOptions.
av_parse_video_rate
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
Definition parseutils.c:181
parseutils.h
misc parsing utilities
AVCOL_RANGE_JPEG
@ AVCOL_RANGE_JPEG
Full range content.
Definition pixfmt.h:783
AVPixelFormat
AVPixelFormat
Pixel format.
Definition pixfmt.h:71
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition pixfmt.h:72
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition pixfmt.h:78
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition pixfmt.h:174
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition pixfmt.h:87
formats
formats
Definition signature.h:47
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition sinewin_tablegen.c:29
snprintf
#define snprintf
Definition snprintf.h:34
pos
unsigned int pos
Definition spdifenc.c:431
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition channel_layout.h:329
AVClass
Describe the class of an AVClass context structure.
Definition log.h:76
AVFilterContext
An instance of a filter.
Definition avfilter.h:273
AVFilterFormatsConfig
Lists of formats / etc.
Definition avfilter.h:120
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition formats.h:64
AVFilterPad
A filter pad used for either input or output.
Definition filters.h:40
AVFrame
This structure describes decoded (raw) audio or video data.
Definition frame.h:472
AVFrame::nb_samples
int nb_samples
number of audio samples (per channel) described by this frame
Definition frame.h:552
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition frame.h:574
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition frame.h:493
AVFrame::sample_aspect_ratio
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition frame.h:569
AVFrame::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition frame.h:723
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition frame.h:517
AVFrame::ch_layout
AVChannelLayout ch_layout
Channel layout of the audio data.
Definition frame.h:815
AVFrame::extended_data
uint8_t ** extended_data
pointers to the data planes/channels.
Definition frame.h:533
AVOption
AVOption.
Definition opt.h:428
AVRational
Rational number (pair of numerator and denominator).
Definition rational.h:58
ShowSpectrumContext::color_mode
int color_mode
display color scheme
Definition avf_showspectrum.c:75
ShowSpectrumContext::saturation
float saturation
color saturation multiplier
Definition avf_showspectrum.c:78
ShowSpectrumContext::rotation
float rotation
color rotation
Definition avf_showspectrum.c:79
ShowSpectrumContext::fft_scratch
AVComplexFloat ** fft_scratch
scratch buffers
Definition avf_showspectrum.c:90
ShowSpectrumContext::sliding
int sliding
1 if sliding mode, 0 otherwise
Definition avf_showspectrum.c:73
ShowSpectrumContext::mode
int mode
channel display mode
Definition avf_showspectrum.c:74
ShowSpectrumContext::plot_channel
int(* plot_channel)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition avf_showspectrum.c:113
ShowSpectrumContext::window_func_lut
float * window_func_lut
Window function LUT.
Definition avf_showspectrum.c:91
ShowSpectrumContext::fft_data
AVComplexFloat ** fft_data
bins holder for each (displayed) channels
Definition avf_showspectrum.c:89
ShowSpectrumContext::combine_buffer
float * combine_buffer
color combining buffer (4 * h items)
Definition avf_showspectrum.c:101
ShowSpectrumContext::xpos
int xpos
x position (current column)
Definition avf_showspectrum.c:82
ShowSpectrumContext::color_buffer
float ** color_buffer
color buffer (4 * h * ch items)
Definition avf_showspectrum.c:102
ShowSpectrumContext::ifft
AVTXContext ** ifft
Inverse Fast Fourier Transform context.
Definition avf_showspectrum.c:84
ShowSpectrumContext::fft_in
AVComplexFloat ** fft_in
input FFT coeffs
Definition avf_showspectrum.c:88
ShowSpectrumContext::fft_size
int fft_size
number of coeffs (FFT window size)
Definition avf_showspectrum.c:87
ShowSpectrumContext::fft
AVTXContext ** fft
Fast Fourier Transform context.
Definition avf_showspectrum.c:83
mode
Definition swscale.c:71
av_free
#define av_free(p)
Definition tableprint_vlc.h:34
av_realloc_f
#define av_realloc_f(p, o, n)
Definition tableprint_vlc.h:33
av_freep
#define av_freep(p)
Definition tableprint_vlc.h:35
av_log
#define av_log(a,...)
Definition tableprint_vlc.h:27
LOG
#define LOG(...)
Definition internal.h:126
out
static FILE * out
Definition movenc.c:55
ctx
static AVFormatContext * ctx
Definition movenc.c:49
pts
static int64_t pts
Definition transcode_aac.c:649
size
int size
Definition twinvq_data.h:10344
av_tx_uninit
av_cold void av_tx_uninit(AVTXContext **ctx)
Frees a context and sets *ctx to NULL, does nothing when *ctx == NULL.
Definition tx.c:295
av_tx_init
av_cold int av_tx_init(AVTXContext **ctx, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags)
Initialize a transform context with the given configuration (i)MDCTs with an odd length are currently...
Definition tx.c:903
AV_TX_FLOAT_FFT
@ AV_TX_FLOAT_FFT
Standard complex to complex FFT with sample data type of AVComplexFloat, AVComplexDouble or AVComplex...
Definition tx.h:47
av_tx_fn
void(* av_tx_fn)(AVTXContext *s, void *out, void *in, ptrdiff_t stride)
Function pointer to a function to perform the transform.
Definition tx.h:151
ma
#define ma
Definition vf_colormatrix.c:98
mi
#define mi
Definition vf_colormatrix.c:106
g
const char * g
Definition vf_curves.c:128
GREEN
#define GREEN
Definition vf_huesaturation.c:39
LINEAR
#define LINEAR
Definition vf_perspective.c:36
limit
static double limit(double x)
Definition vf_pseudocolor.c:142
color_range
color_range
Definition vf_selectivecolor.c:43
a0
static double a0(void *priv, double x, double y)
Definition vf_xfade.c:2028
a1
static double a1(void *priv, double x, double y)
Definition vf_xfade.c:2029
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition video.c:89
delta
float delta
Definition vorbis_enc_data.h:430
h
h
Definition vp9dsp_template.c:2070
c
static double c[64]
Definition vsrc_mptestsrc.c:89
window_func.h
WIN_FUNC_OPTION
#define WIN_FUNC_OPTION(win_func_opt_name, win_func_offset, flag, default_window_func)
Definition window_func.h:37
generate_window_func
static void generate_window_func(float *lut, int N, int win_func, float *overlap)
Definition window_func.h:63
WFUNC_HANNING
@ WFUNC_HANNING
Definition window_func.h:29
avpriv_cga_font_get
const uint8_t * avpriv_cga_font_get(void)
Definition xga_font_data.c:160
xga_font_data.h
CGA/EGA/VGA ROM font data.
color_table
static const ColorEntry color_table[]
Definition xpmdec.c:51
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