42 lines
1.2 KiB
Java
42 lines
1.2 KiB
Java
package eu.worn.apps.androvac;
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import java.util.ArrayList;
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public class EufyIRModulation implements IRModulation {
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// Pulse widths in microseconds
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private static final int PREAMBLE[] = {3000, 3000};
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private static final int LOGIC[][] = {{400, 600}, {400, 1600}};
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private static final int TRAILER[] = {400, 20000};
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private static final int REPEATS = 2;
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public int getCarrierFrequency() { return 38000; }
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public int[] modulate(byte[] frame) {
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int pulses = PREAMBLE.length + LOGIC[0].length*frame.length + TRAILER.length;
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ArrayList<Integer> fragment = new ArrayList<>(pulses);
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for (int p: PREAMBLE)
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fragment.add(p);
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for (byte f : frame)
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for (int bit = 0; bit < 8; bit++) {
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int bv = ((f & (0x80 >> bit)) != 0 ? 1 : 0);
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for (int p: LOGIC[bv])
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fragment.add(p);
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}
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for (int p: TRAILER)
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fragment.add(p);
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int fs = fragment.size();
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int res[] = new int[fs*(REPEATS+1)];
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int pos = 0;
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for (int e: fragment) {
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for (int r = 0; r <= REPEATS; r++)
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res[pos + fs * r] = e;
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pos++;
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}
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return res;
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}
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}
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