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visualize sync pulses

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This commit is contained in:
Ahmet Inan 2024-04-16 09:55:07 +02:00
parent 7eea1aaee9
commit 3ae7e18df3
1 changed files with 15 additions and 5 deletions
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20
app/src/main/java/xdsopl/robot36/MainActivity.java
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@ -30,7 +30,7 @@ import java.util.List;
public class MainActivity extends AppCompatActivity {
private final int scopeWidth = 256, scopeHeight = 256;
private final int scopeWidth = 1200, scopeHeight = 512;
private Bitmap scopeBitmap;
private int[] scopePixels;
private ImageView scopeView;
@ -74,10 +74,20 @@ public class MainActivity extends AppCompatActivity {
baseBand = baseBandLowPass.avg(baseBand.set(v).mul(baseBandOscillator.rotate()));
syncPulse = syncPulseFilter.avg(syncPulse.set(baseBand).mul(syncPulseOscillator.rotate()));
scanLine = scanLineFilter.avg(scanLine.set(baseBand).mul(scanLineOscillator.rotate()));
float level = powerDelay.push(syncPulse.norm()) / powerAvg.avg(baseBand.norm());
float value = Math.min(Math.max(0.5f * (scanLineDemod.demod(scanLine) + 1), 0), 1);
int x = (int) Math.round(255 * Math.sqrt(value));
scopePixels[scopeWidth * curLine + curColumn] = 0xff000000 | 0x00010101 * x;
float syncPulseValue = powerDelay.push(syncPulse.norm()) / powerAvg.avg(baseBand.norm());
float scanLineValue = scanLineDemod.demod(scanLine);
float syncPulseLevel = Math.min(Math.max(syncPulseValue, 0), 1);
float scanLineLevel = Math.min(Math.max(0.5f * (scanLineValue + 1), 0), 1);
int syncPulseIntensity = (int) Math.round(255 * Math.sqrt(syncPulseLevel));
int scanLineIntensity = (int) Math.round(255 * Math.sqrt(scanLineLevel));
int syncPulseColor = 0x00000100 * syncPulseIntensity;
int scanLineColor = 0x00010101 * scanLineIntensity;
int pixelColor = 0xff000000;
if (syncPulseLevel > 0.1)
pixelColor |= syncPulseColor;
else
pixelColor |= scanLineColor;
scopePixels[scopeWidth * curLine + curColumn] = pixelColor;
if (++curColumn >= scopeWidth) {
curColumn = 0;
for (int i = 0; i < scopeWidth; ++i)