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filter instead of clamping

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This commit is contained in:
Ahmet Inan 2024-04-27 08:38:14 +02:00
parent 7e7618975a
commit 0cdab3774d
1 changed files with 4 additions and 3 deletions
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7
app/src/main/java/xdsopl/robot36/MainActivity.java
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@ -89,7 +89,7 @@ public class MainActivity extends AppCompatActivity {
int pixels = peakMeterBuffer.height;
int peak = pixels;
if (max > 0)
peak = (int) Math.round(Math.min(Math.max(-Math.PI*Math.log(max), 0), pixels));
peak = (int) Math.round(Math.min(Math.max(-Math.PI * Math.log(max), 0), pixels));
Arrays.fill(peakMeterBuffer.pixels, 0, peak, thin);
Arrays.fill(peakMeterBuffer.pixels, peak, pixels, tint);
peakMeterBitmap.setPixels(peakMeterBuffer.pixels, 0, peakMeterBuffer.width, 0, 0, peakMeterBuffer.width, peakMeterBuffer.height);
@ -104,8 +104,9 @@ public class MainActivity extends AppCompatActivity {
int channels = recordChannel > 0 ? 2 : 1;
Arrays.fill(freqPlotBuffer.pixels, line, line + stride, 0);
for (int i = 0; i < recordBuffer.length / channels; ++i) {
int x = Math.min(Math.max(Math.round((recordBuffer[i] + 3) * stride / 6), 0), stride - 1);
freqPlotBuffer.pixels[line + x] = tint;
int x = Math.round((recordBuffer[i] + 3) * stride / 6);
if (x >= 0 && x < stride)
freqPlotBuffer.pixels[line + x] = tint;
}
System.arraycopy(freqPlotBuffer.pixels, line, freqPlotBuffer.pixels, line + stride * (freqPlotBuffer.height / 2), stride);
freqPlotBuffer.line = (freqPlotBuffer.line + 1) % (freqPlotBuffer.height / 2);