public bool decodePulseModulation(PulseModulationEncoding encoding, ref uint32_t value)
{
_currentIndex = 0;
value = 0;
// Skip leading space
getNextInterval();
// Match the header
if (encoding.headerMark != 0) {
if (!matchMark(getNextInterval(), encoding.headerMark)) {
return false;
}
if (!matchSpace(getNextInterval(), encoding.headerSpace)) {
return false;
}
}
// Match the data
for (int i = 0; i < (int)encoding.numBits; i++) {
uint16_t mark = getNextInterval();
uint16_t space = getNextInterval();
if (matchMark(mark, encoding.oneMark) &&
matchSpace(space, encoding.oneSpace)) {
value = (value << 1) | 1;
} else if (matchMark(mark, encoding.zeroMark) &&
matchSpace(space, encoding.zeroSpace)) {
value <<= 1;
} else {
return false;
}
}
// Match the stop mark
if (encoding.stopMark != 0) {
if (!matchMark(getNextInterval(), encoding.stopMark)) {
return false;
}
}
// Success!
return true;
}
static int encodePulseModulation(PulseModulationEncoding encoding,
uint32_t data, uint8_t[] rawData, uint8_t maxLen)
{
// Index 0 is a space. Set it to 0 length.
rawData[0] = 0;
int length = 1;
if ((encoding.headerMark != 0) && (length + 2 < maxLen))
{
rawData[length++] = (byte)(encoding.headerMark / USECPERTICK);
rawData[length++] = (byte)(encoding.headerSpace / USECPERTICK);
}
for (int i = encoding.numBits - 1; i >= 0 && length + 2 < maxLen; i--)
{
if ((data & (1 << i)) != 0)
{
rawData[length++] = (byte)(encoding.oneMark / USECPERTICK);
rawData[length++] = (byte)(encoding.oneSpace / USECPERTICK);
}
else {
rawData[length++] = (byte)(encoding.zeroMark / USECPERTICK);
rawData[length++] = (byte)(encoding.zeroSpace / USECPERTICK);
}
}
if ((encoding.stopMark != 0) && length < maxLen)
{
rawData[length++] = (byte)(encoding.stopMark / USECPERTICK);
}
return length;
}
