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extracted header handler

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This commit is contained in:
Ahmet Inan 2024-04-30 18:53:05 +02:00
parent 1bc83096f0
commit e4b6e84d8b
1 changed files with 44 additions and 41 deletions
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85
app/src/main/java/xdsopl/robot36/Decoder.java
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@ -257,6 +257,49 @@ public class Decoder {
return check;
}
private boolean handleHeader(int leaderBreakIndex) {
if (!detectHeader(leaderBreakIndex))
return false;
Mode mode;
int[] pulses;
int[] lines;
if ((mode = findMode(syncPulse5msModes, visCode)) != null) {
pulses = last5msSyncPulses;
lines = last5msScanLines;
} else if ((mode = findMode(syncPulse9msModes, visCode)) != null) {
pulses = last9msSyncPulses;
lines = last9msScanLines;
} else if ((mode = findMode(syncPulse20msModes, visCode)) != null) {
pulses = last20msSyncPulses;
lines = last20msScanLines;
} else {
drawLines(0xffff0000, 8);
return false;
}
mode.reset();
imageBuffer.width = mode.getWidth();
imageBuffer.height = mode.getHeight();
imageBuffer.line = 0;
lastMode = mode;
lastSyncPulseIndex = mode.getFirstSyncPulseIndex();
lastScanLineSamples = mode.getScanLineSamples();
lastFrequencyOffset = leaderFreqOffset;
for (int i = 0; i < pulses.length; ++i)
pulses[i] = lastSyncPulseIndex + (i - pulses.length + 1) * lastScanLineSamples;
Arrays.fill(lines, lastScanLineSamples);
int shift = leaderBreakIndex + leaderToneSamples + visCodeSamples;
adjustSyncPulses(last5msSyncPulses, shift);
adjustSyncPulses(last9msSyncPulses, shift);
adjustSyncPulses(last20msSyncPulses, shift);
int endSample = curSample;
curSample = 0;
for (int i = shift; i < endSample; ++i)
scanLineBuffer[curSample++] = scanLineBuffer[i];
drawLines(0xff00ff00, 8);
drawLines(0xff000000, 10);
return true;
}
private boolean processSyncPulse(ArrayList<Mode> modes, float[] freqOffs, int[] pulses, int[] lines, int index) {
if (Math.abs(index - pulses[pulses.length - 1]) > scanLineToleranceSamples) {
for (int i = 1; i < lines.length; ++i)
@ -340,48 +383,8 @@ public class Decoder {
return false;
}
}
int leaderBreakIndex = last9msSyncPulses[last9msSyncPulses.length - 1];
if (detectHeader(leaderBreakIndex)) {
Mode mode;
int[] pulses = null;
int[] lines = null;
if ((mode = findMode(syncPulse5msModes, visCode)) != null) {
pulses = last5msSyncPulses;
lines = last5msScanLines;
} else if ((mode = findMode(syncPulse9msModes, visCode)) != null) {
pulses = last9msSyncPulses;
lines = last9msScanLines;
} else if ((mode = findMode(syncPulse20msModes, visCode)) != null) {
pulses = last20msSyncPulses;
lines = last20msScanLines;
}
if (mode != null && pulses != null && lines != null) {
mode.reset();
imageBuffer.width = mode.getWidth();
imageBuffer.height = mode.getHeight();
imageBuffer.line = 0;
lastMode = mode;
lastSyncPulseIndex = mode.getFirstSyncPulseIndex();
lastScanLineSamples = mode.getScanLineSamples();
lastFrequencyOffset = leaderFreqOffset;
for (int i = 0; i < pulses.length; ++i)
pulses[i] = lastSyncPulseIndex + (i - pulses.length + 1) * lastScanLineSamples;
Arrays.fill(lines, lastScanLineSamples);
int shift = leaderBreakIndex + leaderToneSamples + visCodeSamples;
adjustSyncPulses(last5msSyncPulses, shift);
adjustSyncPulses(last9msSyncPulses, shift);
adjustSyncPulses(last20msSyncPulses, shift);
int endSample = curSample;
curSample = 0;
for (int i = shift; i < endSample; ++i)
scanLineBuffer[curSample++] = scanLineBuffer[i];
drawLines(0xff00ff00, 8);
} else {
drawLines(0xffff0000, 8);
}
drawLines(0xff000000, 10);
if (handleHeader(last9msSyncPulses[last9msSyncPulses.length - 1]))
return true;
}
if (curSample > lastSyncPulseIndex + (lastScanLineSamples * 5) / 4) {
copyLines(lastMode.decodeScanLine(pixelBuffer, scratchBuffer, scanLineBuffer, scopeBuffer.width, lastSyncPulseIndex, lastScanLineSamples, lastFrequencyOffset));
lastSyncPulseIndex += lastScanLineSamples;