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#include "correct_iq.h"
namespace dsp
{
template <typename T>
CorrectIQBlock<T>::CorrectIQBlock(std::shared_ptr<dsp::stream<T>> input, float alpha)
: Block<T, T>(input)
{
beta = 1.0f - alpha;
}
template <typename T>
CorrectIQBlock<T>::~CorrectIQBlock()
{
}
template <typename T>
void CorrectIQBlock<T>::work()
{
int nsamples = Block<T, T>::input_stream->read();
if (nsamples <= 0)
{
Block<T, T>::input_stream->flush();
return;
}
for (int i = 0; i < nsamples; i++)
{
acc = acc * beta + Block<T, T>::input_stream->readBuf[i] * alpha; // Compute a moving average, of both I & Q
Block<T, T>::output_stream->writeBuf[i] = Block<T, T>::input_stream->readBuf[i] - acc; // Substract it to the input buffer, moving back to 0
}
Block<T, T>::input_stream->flush();
Block<T, T>::output_stream->swap(nsamples);
}
template class CorrectIQBlock<complex_t>;
template class CorrectIQBlock<float>;
}
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