From 26adb6c4a3cd258d00f87e3a8ffcab2c55946a1a Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Thu, 6 Jun 2013 19:59:38 +0000 Subject: add variable fft scala --- spectrogram.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'spectrogram.c') diff --git a/spectrogram.c b/spectrogram.c index 78d8a3e..42b8308 100644 --- a/spectrogram.c +++ b/spectrogram.c @@ -243,6 +243,7 @@ main(int argc, char **argv) double *left, *right; double *hamming; + float scala = 1.0; int16_t *buffer; size_t bufsz; @@ -358,7 +359,7 @@ main(int argc, char **argv) } while (done < bufsz); done -= bufsz; - dofft(fft, buffer, left, right, delta, hamming); + dofft(fft, buffer, left, right, delta, hamming, scala); draw(left, right, ssize, resolution); while (XPending(dsp)) { @@ -368,7 +369,21 @@ main(int argc, char **argv) switch (ev.type) { case KeyPress: - die = XLookupKeysym(&ev.xkey, 0) == XK_q; + switch (XLookupKeysym(&ev.xkey, 0)) { + case XK_q: + die = 1; + break; + case XK_KP_Add: + scala *= 2; + warnx("inc scala: %f", scala); + break; + case XK_KP_Subtract: + scala /= 2; + warnx("dec scala: %f", scala); + break; + default: + break; + } break; case ClientMessage: die = *ev.xclient.data.l == delwin; -- cgit v1.2.3