nausea

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

commit ab89793de3a11578c34be357ca8755932be4b24d
parent 0d686fbb40d3f6d47585578a0abacabefe2d3ea1
Author: lostd <lostd@2f30.org>
Date:   Sun May 10 01:18:43 +0300

New circle visual on the wave domain called boom plus reordering

Diffstat:
nausea.1 | 8+++++---
nausea.c | 95++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
2 files changed, 95 insertions(+), 8 deletions(-)
diff --git a/nausea.1 b/nausea.1 @@ -1,4 +1,4 @@ -.Dd April 2, 2015 +.Dd May 9, 2015 .Dt NAUSEA 1 .Os .Sh NAME @@ -43,9 +43,11 @@ Exposed runtime options: .It 1 Select the spectrum visualization. .It 2 -Select the wave visualization. -.It 3 Select the fountain visualization. +.It 3 +Select the wave visualization. +.It 4 +Select the boom visualization. .It c Toggle color. .It p diff --git a/nausea.c b/nausea.c @@ -3,6 +3,7 @@ #include <curses.h> #include <fcntl.h> #include <locale.h> +#include <math.h> #include <stdio.h> #include <string.h> #include <stdint.h> @@ -48,19 +49,23 @@ struct frame { /* Supported visualizations: * 1 -- spectrum - * 2 -- wave - * 2 -- fountain */ + * 2 -- fountain + * 3 -- wave + * 4 -- boom + */ static void draw_spectrum(struct frame *fr); -static void draw_wave(struct frame *fr); static void draw_fountain(struct frame *fr); +static void draw_wave(struct frame *fr); +static void draw_boom(struct frame *fr); static struct visual { void (* draw)(struct frame *fr); int dft; /* needs the DFT */ int color; /* supports colors */ } visuals[] = { {draw_spectrum, 1, 1}, - {draw_wave, 0, 0}, {draw_fountain, 1, 1}, + {draw_wave, 0, 0}, + {draw_boom, 0, 1}, }; static int vidx = 0; /* default visual index */ @@ -437,6 +442,80 @@ draw_fountain(struct frame *fr) } static void +draw_boom(struct frame *fr) +{ + unsigned i, j; + struct color_range *cr; + unsigned dim, cx, cy, cur, r; + double avg = 0; + + /* read dimensions to catch window resize */ + fr->width = COLS; + fr->height = LINES; + + if (colors) { + /* scale color ranges */ + for (i = 0; i < LEN(color_ranges); i++) { + cr = &color_ranges[i]; + cr->scaled_min = cr->min * fr->height / 100; + cr->scaled_max = cr->max * fr->height / 100; + } + } + + /* We assume that to draw a circle using a monospace font we need + * _twice_ the distance on the x-axis, so we double everything. */ + + /* size of radius */ + dim = MIN(fr->width / 2, fr->height); + + for (i = 0; i < fr->gotsamples; i++) + avg += abs(fr->in[i]); + avg /= fr->gotsamples; + /* scale it to our box */ + r = (avg / INT16_MAX) * dim; +#define RADSCALE 2 + r *= RADSCALE; +#undef RADSCALE + + /* center */ + cx = fr->width / 2; + cy = fr->height / 2; + + erase(); + attron(A_BOLD); + setcolor(1, fr->height - 3 * r); + /* put the center point */ + move(cy, cx); + printw("%lc", chpoint); + for (i = 0; i < fr->width; i++) { + for (j = 0; j < fr->height; j++) { + cur = sqrt((i - cx) * (i - cx) + + (j - cy) * (j - cy)); + /* draw points on the perimeter */ + if (cur == r) { + move(j, 2 * i - cx); + printw("%lc", chpoint); + /* leave just the center point alone */ + if (i == cx && j == cy) + continue; + /* draw second point to make line thicker */ + if (i <= cx) { + move(j, 2 * i - cx - 1); + printw("%lc", chpoint); + } + if (i >= cx) { + move(j, 2 * i - cx + 1); + printw("%lc", chpoint); + } + } + } + } + setcolor(0, fr->height - 3 * r); + attroff(A_BOLD); + refresh(); +} + +static void initcolors(void) { unsigned i; @@ -483,6 +562,9 @@ main(int argc, char *argv[]) case '3': vidx = 2; break; + case '4': + vidx = 3; + break; } break; case 'c': @@ -565,6 +647,9 @@ main(int argc, char *argv[]) case '3': vidx = 2; break; + case '4': + vidx = 3; + break; case 'n': case KEY_RIGHT: vidx = vidx == (LEN(visuals) - 1) ? 0 : vidx + 1; @@ -579,7 +664,7 @@ main(int argc, char *argv[]) if (vidx != vidx_prev) fr.width_old = 0; - /* only spectrum and fountain support colors */ + /* not all visuals support colors */ if (colors && visuals[vidx].color) initcolors(); else