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Tx ph.1: refactored source sample FIFO. StarUML model: added Tx classes

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f4exb 2016-10-15 09:53:06 +02:00
parent 4709ba9e01
commit 52b618469c
3 changed files with 2998 additions and 101 deletions
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3035
doc/model/SDRAngel.mdj
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50
sdrbase/dsp/samplesourcefifo.cpp
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@ -14,12 +14,14 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <assert.h>
#include "samplesourcefifo.h"
SampleSourceFifo::SampleSourceFifo(uint32_t size, uint32_t samplesChunkSize) :
m_size(size),
m_samplesChunkSize(samplesChunkSize),
m_i(0)
m_ir(0),
m_iw(size/2)
{
assert(samplesChunkSize < m_size/4);
m_data.resize(2*m_size);
@ -29,44 +31,56 @@ SampleSourceFifo::SampleSourceFifo(uint32_t size, uint32_t samplesChunkSize) :
SampleSourceFifo::~SampleSourceFifo()
{}
void SampleSourceFifo::read(SampleVector::iterator& begin, SampleVector::iterator& end)
void SampleSourceFifo::read(SampleVector::iterator& beginRead, unsigned int nbSamples)
{
QMutexLocker mutexLocker(&m_mutex);
end = m_data.begin() + m_size + m_i;
begin = end - m_samplesChunkSize;
emit dataRead();
}
void SampleSourceFifo::getReadIterator(SampleVector::iterator& beginRead)
{
QMutexLocker mutexLocker(&m_mutex);
beginRead = m_data.begin() + m_size + m_i - m_samplesChunkSize;
emit dataRead();
assert(nbSamples < m_samplesChunkSize/2);
beginRead = m_data.begin() + m_size + m_ir;
m_ir = (m_ir + nbSamples) % m_size;
int i_delta = m_iw - m_ir;
if (i_delta > 0)
{
if (i_delta < m_samplesChunkSize)
{
emit dataWrite();
}
}
else
{
if (i_delta + m_size < m_samplesChunkSize)
{
emit dataWrite();
}
}
}
void SampleSourceFifo::write(const Sample& sample)
{
m_data[m_i] = sample;
m_data[m_i+m_size] = sample;
m_data[m_iw] = sample;
m_data[m_iw+m_size] = sample;
{
QMutexLocker mutexLocker(&m_mutex);
m_i = (m_i+1) % m_size;
m_iw = (m_iw+1) % m_size;
}
}
void SampleSourceFifo::getWriteIterator(SampleVector::iterator& writeAt)
{
writeAt = m_data.begin() + m_i;
writeAt = m_data.begin() + m_iw;
}
void SampleSourceFifo::bumpIndex()
{
m_data[m_i+m_size] = m_data[m_i];
m_i = (m_i+1) % m_size;
m_data[m_iw+m_size] = m_data[m_iw];
m_iw = (m_iw+1) % m_size;
{
QMutexLocker mutexLocker(&m_mutex);
m_i = (m_i+1) % m_size;
m_iw = (m_iw+1) % m_size;
}
}

14
sdrbase/dsp/samplesourcefifo.h
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@ -32,21 +32,25 @@ public:
~SampleSourceFifo();
unsigned int getChunkSize() const { return m_samplesChunkSize; }
void read(SampleVector::iterator& begin, SampleVector::iterator& end);
void getReadIterator(SampleVector::iterator& beginRead); //!< begin read at this point for the chunksize length
void write(const Sample& sample); //!< write directly
/** begin read at current read point for the given length */
void read(SampleVector::iterator& beginRead, unsigned int nbSamples);
void getWriteIterator(SampleVector::iterator& writeAt); //!< get iterator to current item for update - write phase 1
void bumpIndex(); //!< copy current item to second buffer and bump write index - write phase 2
void write(const Sample& sample); //!< write directly - phase 1 + phase 2
private:
uint32_t m_size;
uint32_t m_samplesChunkSize;
SampleVector m_data;
uint32_t m_i;
uint32_t m_iw;
uint32_t m_ir;
QMutex m_mutex;
signals:
void dataRead(); // signal data has been read past a read chunk of samples
void dataWrite(); // signal data is read past a read chunk of samples and write is needed
};
#endif /* SDRBASE_DSP_SAMPLESOURCEFIFO_H_ */