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added decoder for Martin

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This commit is contained in:
Ahmet Inan 2024-04-19 18:34:16 +02:00
parent 4f716e76a5
commit b68a66b4ce
1 changed files with 26 additions and 5 deletions
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31
app/src/main/java/xdsopl/robot36/Martin.java
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@ -8,6 +8,11 @@ package xdsopl.robot36;
public class Martin implements Mode {
private final int scanLineSamples;
private final int channelSamples;
private final int greenBeginSamples;
private final int blueBeginSamples;
private final int redBeginSamples;
private final int redEndSamples;
private final String name;
Martin(String name, double channelSeconds, int sampleRate) {
@ -16,6 +21,17 @@ public class Martin implements Mode {
double separatorSeconds = 0.000572;
double scanLineSeconds = syncPulseSeconds + separatorSeconds + 3 * (channelSeconds + separatorSeconds);
scanLineSamples = (int) Math.round(scanLineSeconds * sampleRate);
channelSamples = (int) Math.round(channelSeconds * sampleRate);
double greenBeginSeconds = syncPulseSeconds / 2 + separatorSeconds;
greenBeginSamples = (int) Math.round(greenBeginSeconds * sampleRate);
double greenEndSeconds = greenBeginSeconds + channelSeconds;
double blueBeginSeconds = greenEndSeconds + separatorSeconds;
blueBeginSamples = (int) Math.round(blueBeginSeconds * sampleRate);
double blueEndSeconds = blueBeginSeconds + channelSeconds;
double redBeginSeconds = blueEndSeconds + separatorSeconds;
redBeginSamples = (int) Math.round(redBeginSeconds * sampleRate);
double redEndSeconds = redBeginSeconds + channelSeconds;
redEndSamples = (int) Math.round(redEndSeconds * sampleRate);
}
@Override
@ -29,13 +45,18 @@ public class Martin implements Mode {
}
@Override
public boolean decodeScanLine(int[] pixelBuffer, float[] scanLineBuffer, int prevPulseIndex, int scanLineSamples) {
if (prevPulseIndex < 0 || prevPulseIndex + scanLineSamples >= scanLineBuffer.length)
public boolean decodeScanLine(int[] pixelBuffer, float[] scanLineBuffer, int prevPulseIndex, int ignore) {
if (prevPulseIndex + greenBeginSamples < 0 || prevPulseIndex + redEndSamples > scanLineBuffer.length)
return false;
for (int i = 0; i < pixelBuffer.length; ++i) {
int position = (i * scanLineSamples) / pixelBuffer.length + prevPulseIndex;
int intensity = (int) Math.round(255 * Math.sqrt(scanLineBuffer[position]));
int pixelColor = 0xff000000 | 0x00010101 * intensity;
int position = (i * channelSamples) / pixelBuffer.length + prevPulseIndex;
int greenPos = position + greenBeginSamples;
int bluePos = position + blueBeginSamples;
int redPos = position + redBeginSamples;
int green = Math.round(255 * scanLineBuffer[greenPos]);
int blue = Math.round(255 * scanLineBuffer[bluePos]);
int red = Math.round(255 * scanLineBuffer[redPos]);
int pixelColor = 0xff000000 | (red << 16) | (green << 8) | blue;
pixelBuffer[i] = pixelColor;
}
return true;