nausea

curses audio visualizer
git clone git://git.2f30.org/nausea.git
Log | Files | Refs | README | LICENSE

commit cf6de049b86b67fca2b9def86b92efa9ba1292a8
parent ddc10c160d4b22a9a86f5afe0ae6d31569beae85
Author: lostd <lostd@2f30.org>
Date:   Thu Nov 21 15:54:34 +0200

Do not display peaks for dead freqs and support faster drops

Diffstat:
spectrum.c | 22++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/spectrum.c b/spectrum.c @@ -27,6 +27,7 @@ static int die; struct peak { int age; int pos; +#define PK_HIDDEN -1 }; struct frame { @@ -174,6 +175,8 @@ draw(struct frame *fr) if (fr->width != fr->width_old) { free(fr->peaks); fr->peaks = calloc(fr->width, sizeof(struct peak)); + for (i = 0; i < fr->width; i++) + fr->peaks[i].pos = PK_HIDDEN; fr->width_old = fr->width; } } @@ -219,20 +222,27 @@ draw(struct frame *fr) yend = MIN(bar_height + ybegin, fr->height); #undef MIN - /* update state for peaks */ -#define WAIT 1 pk = &fr->peaks[i]; + +#define EVERY 1 +#define DROP 1 + /* update state for peaks + * every n time units drop by m lines */ if (peaks) { if (pk->pos >= ybegin) { pk->age = 0; pk->pos = ybegin; } else { pk->age++; - if ((pk->age % WAIT) == 0) - pk->pos++; + if ((pk->age % EVERY) == 0) + pk->pos += DROP; } + /* this freq died out */ + if (fr->height == ybegin && pk->pos == ybegin) + pk->pos = PK_HIDDEN; } -#undef WAIT +#undef EVERY +#undef DROP /* output symbols */ for (j = ybegin; j < yend; j++) { @@ -243,7 +253,7 @@ draw(struct frame *fr) } /* output peaks */ - if (peaks) { + if (peaks && pk->pos != PK_HIDDEN) { move(pk->pos, i); printw("%c", peak); }