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fade spectrum slower

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This commit is contained in:
Ahmet Inan 2015-01-15 11:42:44 +01:00
parent 42aaf6b4cf
commit 5fc7dfc458
1 changed files with 8 additions and 4 deletions
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12
app/src/main/rs/stft.rsh
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@ -36,11 +36,11 @@ static inline uchar4 rainbow(float v)
static void freq_marker(int freq)
{
int sgi = (spectrogram_width * freq + sample_rate / 4) / (sample_rate / 2);
spectrogram_buffer[sgi] |= rgb(64, 64, 64);
spectrogram_buffer[sgi] = rgb(255, 255, 255);
int si = (spectrum_width * freq + sample_rate / 4) / (sample_rate / 2);
for (int j = 0; j < spectrum_height; ++j)
spectrum_buffer[spectrum_width * j + si] |= rgb(64, 64, 64);
spectrum_buffer[spectrum_width * j + si] = rgb(255, 255, 255);
}
static void show_rainbow()
@ -60,8 +60,12 @@ static void clear_spectrum()
static void fade_spectrum()
{
for (int i = 0; i < spectrum_height * spectrum_width; ++i)
spectrum_buffer[i] = 0xff000000 | (0x00fefefe & (int)spectrum_buffer[i]) >> 1;
for (int i = 0; i < spectrum_height * spectrum_width; ++i) {
int b = (spectrum_buffer[i][0] * 7) >> 3;
int g = (spectrum_buffer[i][1] * 7) >> 3;
int r = (spectrum_buffer[i][2] * 7) >> 3;
spectrum_buffer[i] = rgb(r, g, b);
}
}
static void init_analyzer(int sw, int sh, int sgw, int sgh)