static void the_fftscope(void)
{
guchar *loc;
guchar bits [256 * 129];
int i, h;
running = 1;
while (running) {
guint val;
gint j;
gint k;
memset(bits, 0, 256 * 128);
for (i=0; i < BARS; i++) {
val = 0;
for (j = xranges[i]; j < xranges[i + 1]; j++) {
/* k = (guint)(sqrt(fftout[j]) * fftmult); */
k = (fft_buf[j] + fft_buf[256+j]) / 256;
val += k;
}
if(val > 127) val = 127;
if (val > (guint)maxbar[ i ])
maxbar[ i ] = val;
else {
k = maxbar[ i ] - (4 + (8 / (128 - maxbar[ i ])));
val = k > 0 ? k : 0;
maxbar[ i ] = val;
}
loc = bits + 256 * 128;
for (h = val; h > 0; h--) {
for (j = (256 / BARS) * i + 0; j < (256 / BARS) * i + ((256 / BARS) - 1); j++) {
*(loc + j) = val-h;
}
loc -=256;
}
}
GDK_THREADS_ENTER();
gdk_draw_indexed_image(area->window, area->style->white_gc,
0,0,256,128, GDK_RGB_DITHER_NONE, bits, 256, color_map);
gdk_flush();
GDK_THREADS_LEAVE();
dosleep(SCOPE_SLEEP);
}
GDK_THREADS_ENTER();
fftscope_hide();
GDK_THREADS_LEAVE();
}
/* The actual FFTscope renderer function. */
static void the_fftscope()
{
guint8 *loc;
guint8 bits[256 * 129];
int i, h;
running = 1;
while (running) {
int w;
guint val;
memset(bits, 128, 256 * SCOPE_HEIGHT);
for (i = 0; i < 256; i++) {
val = (act_fft[i] + act_fft[i + 256]) / (64 * (128 / SCOPE_HEIGHT));
if (val > (SCOPE_HEIGHT-1)) {
val = (SCOPE_HEIGHT-1);
}
loc = bits + i + 256 * (SCOPE_HEIGHT-1);
for (h = val; h > 0; h--) {
*loc = h;
loc -= 256;
}
}
GDK_THREADS_ENTER();
gdk_draw_indexed_image(area->window, area->style->white_gc,
0, 0, 256, SCOPE_HEIGHT, GDK_RGB_DITHER_NONE,
bits, 256, color_map);
gdk_flush();
GDK_THREADS_LEAVE();
dosleep(SCOPE_SLEEP);
}
GDK_THREADS_ENTER();
fftscope_hide();
GDK_THREADS_LEAVE();
}
