/* Receive a timestamped chunk from the device */
void RadioInterface::pullBuffer()
{
bool local_underrun;
int num_recv;
float *output;
if (recvCursor > recvBuffer[0]->size() - CHUNK)
return;
/* Outer buffer access size is fixed */
num_recv = mRadio->readSamples(convertRecvBuffer,
CHUNK,
&overrun,
readTimestamp,
&local_underrun);
if (num_recv != CHUNK) {
LOG(ALERT) << "Receive error " << num_recv;
return;
}
for (size_t i = 0; i < mChans; i++) {
output = (float *) (recvBuffer[i]->begin() + recvCursor);
convert_short_float(output, convertRecvBuffer[i], 2 * num_recv);
}
underrun |= local_underrun;
readTimestamp += num_recv;
recvCursor += num_recv;
}
/* Receive a timestamped chunk from the device */
void RadioInterface::pullBuffer()
{
bool local_underrun;
size_t numRecv, segmentLen = recvBuffer[0]->getSegmentLen();
if (recvBuffer[0]->getFreeSegments() <= 0)
return;
/* Outer buffer access size is fixed */
numRecv = mRadio->readSamples(convertRecvBuffer,
segmentLen,
&overrun,
readTimestamp,
&local_underrun);
if (numRecv != segmentLen) {
LOG(ALERT) << "Receive error " << numRecv;
return;
}
for (size_t i = 0; i < mChans; i++) {
convert_short_float(recvBuffer[i]->getWriteSegment(),
convertRecvBuffer[i],
segmentLen * 2);
}
underrun |= local_underrun;
readTimestamp += numRecv;
}
/* Receive a timestamped chunk from the device */
void RadioInterfaceResamp::pullBuffer()
{
bool local_underrun;
int rc, num_recv;
if (recvCursor > innerRecvBuffer->size() - resamp_inchunk)
return;
/* Outer buffer access size is fixed */
num_recv = mRadio->readSamples(convertRecvBuffer,
resamp_outchunk,
&overrun,
readTimestamp,
&local_underrun);
if (num_recv != (int) resamp_outchunk) {
LOG(ALERT) << "Receive error " << num_recv;
return;
}
convert_short_float((float *) outerRecvBuffer->begin(),
convertRecvBuffer[0], 2 * resamp_outchunk);
underrun |= local_underrun;
readTimestamp += (TIMESTAMP) resamp_outchunk;
/* Write to the end of the inner receive buffer */
rc = dnsampler->rotate((float *) outerRecvBuffer->begin(),
resamp_outchunk,
(float *) (innerRecvBuffer->begin() + recvCursor),
resamp_inchunk);
if (rc < 0) {
LOG(ALERT) << "Sample rate upsampling error";
}
recvCursor += resamp_inchunk;
}