#include "video.h"
#include "avfilter.h"
#include "internal.h"
+#include "window_func.h"
enum DisplayMode { LINE, BAR, DOT, NB_MODES };
+enum ChannelMode { COMBINED, SEPARATE, NB_CMODES };
enum FrequencyScale { FS_LINEAR, FS_LOG, FS_RLOG, NB_FSCALES };
enum AmplitudeScale { AS_LINEAR, AS_SQRT, AS_CBRT, AS_LOG, NB_ASCALES };
-enum WindowFunc { WFUNC_RECT, WFUNC_HANNING, WFUNC_HAMMING, WFUNC_BLACKMAN,
- WFUNC_BARTLETT, WFUNC_WELCH, WFUNC_FLATTOP,
- WFUNC_BHARRIS, WFUNC_BNUTTALL, WFUNC_SINE, WFUNC_NUTTALL,
- WFUNC_BHANN, WFUNC_LANCZOS, WFUNC_GAUSS, NB_WFUNC };
typedef struct ShowFreqsContext {
const AVClass *class;
int w, h;
int mode;
+ int cmode;
int fft_bits;
int ascale, fscale;
int avg;
{ "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl=1.}, 0., 1., FLAGS },
{ "averaging", "set time averaging", OFFSET(avg), AV_OPT_TYPE_INT, {.i64=1}, 0, INT32_MAX, FLAGS },
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
+ { "cmode", "set channel mode", OFFSET(cmode), AV_OPT_TYPE_INT, {.i64=COMBINED}, 0, NB_CMODES-1, FLAGS, "cmode" },
+ { "combined", "show all channels in same window", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, "cmode" },
+ { "separate", "show each channel in own window", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "cmode" },
{ NULL }
};
return 0;
}
-static void generate_window_func(float *lut, int N, int win_func, float *overlap)
-{
- int n;
-
- switch (win_func) {
- case WFUNC_RECT:
- for (n = 0; n < N; n++)
- lut[n] = 1.;
- *overlap = 0.;
- break;
- case WFUNC_BARTLETT:
- for (n = 0; n < N; n++)
- lut[n] = 1.-fabs((n-(N-1)/2.)/((N-1)/2.));
- *overlap = 0.5;
- break;
- case WFUNC_HANNING:
- for (n = 0; n < N; n++)
- lut[n] = .5*(1-cos(2*M_PI*n/(N-1)));
- *overlap = 0.5;
- break;
- case WFUNC_HAMMING:
- for (n = 0; n < N; n++)
- lut[n] = .54-.46*cos(2*M_PI*n/(N-1));
- *overlap = 0.5;
- break;
- case WFUNC_BLACKMAN:
- for (n = 0; n < N; n++)
- lut[n] = .42659-.49656*cos(2*M_PI*n/(N-1))+.076849*cos(4*M_PI*n/(N-1));
- *overlap = 0.661;
- break;
- case WFUNC_WELCH:
- for (n = 0; n < N; n++)
- lut[n] = 1.-(n-(N-1)/2.)/((N-1)/2.)*(n-(N-1)/2.)/((N-1)/2.);
- *overlap = 0.293;
- break;
- case WFUNC_FLATTOP:
- for (n = 0; n < N; n++)
- lut[n] = 1.-1.985844164102*cos( 2*M_PI*n/(N-1))+1.791176438506*cos( 4*M_PI*n/(N-1))-
- 1.282075284005*cos( 6*M_PI*n/(N-1))+0.667777530266*cos( 8*M_PI*n/(N-1))-
- 0.240160796576*cos(10*M_PI*n/(N-1))+0.056656381764*cos(12*M_PI*n/(N-1))-
- 0.008134974479*cos(14*M_PI*n/(N-1))+0.000624544650*cos(16*M_PI*n/(N-1))-
- 0.000019808998*cos(18*M_PI*n/(N-1))+0.000000132974*cos(20*M_PI*n/(N-1));
- *overlap = 0.841;
- break;
- case WFUNC_BHARRIS:
- for (n = 0; n < N; n++)
- lut[n] = 0.35875-0.48829*cos(2*M_PI*n/(N-1))+0.14128*cos(4*M_PI*n/(N-1))-0.01168*cos(6*M_PI*n/(N-1));
- *overlap = 0.661;
- break;
- case WFUNC_BNUTTALL:
- for (n = 0; n < N; n++)
- lut[n] = 0.3635819-0.4891775*cos(2*M_PI*n/(N-1))+0.1365995*cos(4*M_PI*n/(N-1))-0.0106411*cos(6*M_PI*n/(N-1));
- *overlap = 0.661;
- break;
- case WFUNC_BHANN:
- for (n = 0; n < N; n++)
- lut[n] = 0.62-0.48*fabs(n/(double)(N-1)-.5)-0.38*cos(2*M_PI*n/(N-1));
- *overlap = 0.5;
- break;
- case WFUNC_SINE:
- for (n = 0; n < N; n++)
- lut[n] = sin(M_PI*n/(N-1));
- *overlap = 0.75;
- break;
- case WFUNC_NUTTALL:
- for (n = 0; n < N; n++)
- lut[n] = 0.355768-0.487396*cos(2*M_PI*n/(N-1))+0.144232*cos(4*M_PI*n/(N-1))-0.012604*cos(6*M_PI*n/(N-1));
- *overlap = 0.663;
- break;
- case WFUNC_LANCZOS:
-#define SINC(x) (!(x)) ? 1 : sin(M_PI * (x))/(M_PI * (x));
- for (n = 0; n < N; n++)
- lut[n] = SINC((2.*n)/(N-1)-1);
- *overlap = 0.75;
- break;
- case WFUNC_GAUSS:
- for (n = 0; n < N; n++)
- lut[n] = pow(M_E,-0.5*pow((n-(N-1)/2)/(0.4*(N-1)/2.f),2));
- *overlap = 0.75;
- break;
- default:
- av_assert0(0);
- }
-}
-
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
sizeof(*s->window_func_lut));
if (!s->window_func_lut)
return AVERROR(ENOMEM);
- generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap);
+ ff_generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap);
if (s->overlap == 1.)
s->overlap = overlap;
s->skip_samples = (1. - s->overlap) * s->win_size;
const float avg = s->avg_data[ch][f];
const float bsize = get_bsize(s, f);
const int sx = get_sx(s, f);
+ int end = outlink->h;
int x, y, i;
switch(s->ascale) {
a = 1.0 - a;
break;
}
- y = a * outlink->h - 1;
+
+ switch (s->cmode) {
+ case COMBINED:
+ y = a * outlink->h - 1;
+ break;
+ case SEPARATE:
+ end = (outlink->h / s->nb_channels) * (ch + 1);
+ y = (outlink->h / s->nb_channels) * ch + a * (outlink->h / s->nb_channels) - 1;
+ break;
+ }
if (y < 0)
return;
break;
case BAR:
for (x = sx; x < sx + bsize && x < w; x++)
- for (i = y; i < outlink->h; i++)
+ for (i = y; i < end; i++)
draw_dot(out, x, i, fg);
break;
case DOT:
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