diff options
Diffstat (limited to 'gbeat.c')
| -rw-r--r-- | gbeat.c | 40 |
1 files changed, 30 insertions, 10 deletions
@@ -103,12 +103,13 @@ static gboolean errbox(gpointer data) #define NBANDS 32 #define EVALBANDS 32 #define FPS 60 -#define HISTSIZE FPS * 7 +#define HISTSIZE (FPS * 3) / 4 struct bdctx { double bandenergy[EVALBANDS][HISTSIZE]; // double boffs[EVALBANDS]; double goffs; + bool beats[EVALBANDS]; }; struct renderargs { @@ -117,7 +118,7 @@ struct renderargs { }; size_t bd_nbands, bd_bandlim; -double bd_charge, bd_decay; +double bd_charge, bd_decay, bd_cthres; static void logscale(fftw_complex *in, size_t isz, fftw_complex *out, size_t osz) { @@ -144,8 +145,8 @@ static void logscale(fftw_complex *in, size_t isz, fftw_complex *out, size_t osz } for (size_t o = 0; o < osz; o++) { double d = divs[o]; - out[o][0] /= d; - out[o][1] /= d; + out[o][0] /= d * 6.0; + out[o][1] /= d * 6.0; } } @@ -167,8 +168,11 @@ static bool bd_perform(struct bdctx *ctx, fftw_complex *data, size_t size) average += ctx->bandenergy[i][j]; average /= HISTSIZE; - if (energy > average * 1.5 * (1.0 + ctx->goffs)) + if (energy > average * bd_cthres * (1.0 + ctx->goffs)) { beatbands++; + ctx->beats[i] = true; + } else + ctx->beats[i] = false; memmove(&ctx->bandenergy[i][0], &ctx->bandenergy[i][1], (HISTSIZE - 1) * sizeof(double)); @@ -239,9 +243,22 @@ static gpointer renderf(gpointer param) pow(pos[0][0], 2.0) + pow(pos[0][1], 2.0)); pos++; - col = complex2color(c, 4.0); - if (beat) - col = colorinv(col); + + if (c[0] > 1.0) { + col.red = 65535; + col.green = 65535 * (2.0 - (c[0] > 2.0 ? 0.0 : c[0])); + } else { + if (beat) { + col.red = 49152; + col.green = 49152 + 16383 * c[0]; + } else { + col.red = 0; + col.green = 65535 * c[0]; + } + } + col.blue = + arg->bdctx.beats[(pos - logsc) / (logsz / EVALBANDS)] ? + (beat ? 65535 : 32768) : 0; gdk_gc_set_rgb_fg_color(gc, &col); gdk_draw_point(drawto, gc, w - 1, y); @@ -264,11 +281,13 @@ void on_bdapply(GtkWidget *widget, gpointer user_data) { gladewidget(bdnbands); gladewidget(bdbandlim); + gladewidget(bdcthres); gladewidget(bdcharge); gladewidget(bddecay); const gchar *nbands = gtk_entry_get_text(GTK_ENTRY(bdnbands)); const gchar *bandlim = gtk_entry_get_text(GTK_ENTRY(bdbandlim)); + const gchar *cthres = gtk_entry_get_text(GTK_ENTRY(bdcthres)); const gchar *charge = gtk_entry_get_text(GTK_ENTRY(bdcharge)); const gchar *decay = gtk_entry_get_text(GTK_ENTRY(bddecay)); @@ -276,6 +295,7 @@ void on_bdapply(GtkWidget *widget, gpointer user_data) bd_bandlim = strtoul(bandlim, NULL, 10); if (bd_bandlim > EVALBANDS) bd_bandlim = EVALBANDS; + bd_cthres = strtod(cthres, NULL); bd_charge = strtod(charge, NULL); bd_decay = strtod(decay, NULL); } @@ -332,7 +352,7 @@ void on_run_toggled(GtkWidget *widget, gpointer user_data) if (!dev) return; if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(brun))) { - struct fft_runner *fftr = fftrun_attach(dev, window_hard, 6); + struct fft_runner *fftr = fftrun_attach(dev, window_hann, 5); struct renderargs *arg = calloc(sizeof(*arg), 1); arg->fftr = fftr; g_thread_create(renderf, arg, 0, &error); @@ -360,7 +380,7 @@ int main(int argc, char **argv) //gtk_image_set_from_pixbuf(GTK_IMAGE(img), pxb); //img_buffer = gdk_image_new(GDK_IMAGE_FASTEST, gdk_visual_get_system(), 300, 740); //gtk_image_set_from_image(GTK_IMAGE(img), img_buffer, NULL); - pxm = gdk_pixmap_new(NULL, 300, 720, 24); + pxm = gdk_pixmap_new(NULL, 300, 400, 24); gtk_image_set_from_pixmap(GTK_IMAGE(img), pxm, NULL); } on_bdapply(NULL, NULL); |