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slsReceiver bug fix in ctb extracting digital bits

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This commit is contained in:
maliakal_d 2019-05-14 16:41:25 +02:00
parent d114f8db90
commit 3e654977ca
1 changed files with 27 additions and 16 deletions
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39
slsReceiverSoftware/src/DataProcessor.cpp
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@ -513,32 +513,43 @@ void DataProcessor::RearrangeDbitData(char* buf) {
}
const int numSamples = (ctbDigitalDataBytes / sizeof(uint64_t));
const int digOffset = FIFO_HEADER_NUMBYTES + sizeof(sls_receiver_header) + (*ctbAnalogDataBytes);
// ceil as numResult64Bytes could be decimal
const int numResult64Bytes = ceil((double)(numSamples * (*ctbDbitList).size()) / 64.00);
std::vector<uint64_t> result(numResult64Bytes, 0);
// ceil as numResult32Bits could be decimal
const int numResult32Bits = ceil((double)(numSamples * (*ctbDbitList).size()) / 32.00);
uint32_t result[numResult32Bits];
memset(result, 0, numResult32Bits * sizeof(uint32_t));
auto dest = result.data();
const int digOffset = FIFO_HEADER_NUMBYTES + sizeof(sls_receiver_header) + (*ctbAnalogDataBytes) + (*ctbDbitOffset);
auto source = (uint64_t*)(buf + digOffset);
uint32_t* dest = result;
uint64_t* source = (uint64_t*)(buf + digOffset + (*ctbDbitOffset));
// loop through digital bit enable vector
int bitoffset = 0;
for (auto bi : (*ctbDbitList)) {
// where numbits * numsamples is not a multiple of 32
if (bitoffset != 0) {
bitoffset = 0;
++dest;
}
// loop through the frame digital data
for (auto ptr = source; ptr < (source + numSamples);) {
// extract destination in 64 bit batches
for (int i = 0; i != 64; ++i) {
// get selected bit from each 64 bit
int bit = (*ptr++ >> bi) & 1;
*dest |= bit << i;
}
// get selected bit from each 32 bit
uint32_t bit = (*ptr++ >> bi) & 1;
*dest |= bit << bitoffset;
++bitoffset;
// extract destination in 32 bit batches
if (bitoffset == 32) {
bitoffset = 0;
++dest;
}
}
}
// copy back to buf and update size
memcpy(buf + digOffset - (*ctbDbitOffset), result.data(), result.size() * sizeof(uint64_t));
(*((uint32_t*)buf)) = result.size() * sizeof(uint64_t);
memcpy(buf + digOffset, result, numResult32Bits * sizeof(uint32_t));
(*((uint32_t*)buf)) = numResult32Bits * sizeof(uint32_t);
}
/** eiger specific */