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Add new interpolation for most modes and start positioning for P25 and YSF.

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This commit is contained in:
Jonathan Naylor
2017-02-06 21:02:45 +00:00
parent 18ec4bafb6
commit 1bb474dfef
10 changed files with 212 additions and 136 deletions
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DMRIdleRX.cpp
+20 -8
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@@ -84,16 +84,28 @@ void CDMRIdleRX::processSample(q15_t sample)
q15_t max = -16000;
q15_t min = 16000;
uint32_t mask = 0x00800000U;
for (uint8_t i = 0U; i < DMR_SYNC_LENGTH_SYMBOLS; i++, mask >>= 1) {
bool b = (DMR_MS_DATA_SYNC_SYMBOLS & mask) == mask;
for (uint8_t i = 0U; i < DMR_SYNC_LENGTH_SYMBOLS; i++) {
q15_t val = m_buffer[ptr];
if (m_buffer[ptr] > max)
max = m_buffer[ptr];
if (m_buffer[ptr] < min)
min = m_buffer[ptr];
if (val > max)
max = val;
if (val < min)
min = val;
corr += b ? -m_buffer[ptr] : m_buffer[ptr];
switch (DMR_MS_DATA_SYNC_SYMBOLS_VALUES[i]) {
case +3:
corr -= (val + val + val);
break;
case +1:
corr -= val;
break;
case -1:
corr += val;
break;
default: // -3
corr += (val + val + val);
break;
}
ptr += DMR_RADIO_SYMBOL_LENGTH;
if (ptr >= DMR_FRAME_LENGTH_SAMPLES)