mirror of
https://github.com/f4exb/sdrangel.git
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87 lines
4.2 KiB
C++
87 lines
4.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 Edouard Griffiths, F4EXB. //
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// //
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// SDRdaemon sink channel (Rx) data blocks to read queue //
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// //
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// SDRdaemon is a detached SDR front end that handles the interface with a //
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// physical device and sends or receives the I/Q samples stream to or from a //
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// SDRangel instance via UDP. It is controlled via a Web REST API. //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef SDRDAEMON_CHANNEL_SDRDAEMONDATAREADQUEUE_H_
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#define SDRDAEMON_CHANNEL_SDRDAEMONDATAREADQUEUE_H_
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#include <QQueue>
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class SDRDaemonDataBlock;
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class Sample;
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class SDRDaemonDataReadQueue
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{
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public:
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SDRDaemonDataReadQueue(uint32_t sampleSize);
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~SDRDaemonDataReadQueue();
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void push(SDRDaemonDataBlock* dataBlock); //!< push block on the queue
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SDRDaemonDataBlock* pop(); //!< Pop block from the queue
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void readSample(Sample& s); //!< Read sample from queue
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uint32_t length() const { return m_dataReadQueue.size(); } //!< Returns queue length
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uint32_t size() const { return m_maxSize; } //!< Returns queue size (max length)
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void setSize(uint32_t size); //!< Sets the queue size (max length)
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uint32_t readSampleCount() const { return m_sampleCount; } //!< Returns the absolute number of samples read
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static const uint32_t MinimumMaxSize;
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private:
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uint32_t m_sampleSize;
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QQueue<SDRDaemonDataBlock*> m_dataReadQueue;
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SDRDaemonDataBlock *m_dataBlock;
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uint32_t m_maxSize;
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uint32_t m_blockIndex;
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uint32_t m_sampleIndex;
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uint32_t m_sampleCount; //!< use a counter capped below 2^31 as it is going to be converted to an int in the web interface
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bool m_full; //!< full condition was hit
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inline void convertDataToSample(Sample& s, uint32_t blockIndex, uint32_t sampleIndex)
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{
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if (sizeof(Sample) == m_sampleSize)
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{
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s = *((Sample*) &(m_dataBlock->m_superBlocks[blockIndex].m_protectedBlock.buf[sampleIndex*m_sampleSize]));
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}
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else if ((sizeof(Sample) == 4) && (m_sampleSize == 8))
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{
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int32_t rp = *( (int32_t*) &(m_dataBlock->m_superBlocks[blockIndex].m_protectedBlock.buf[sampleIndex*m_sampleSize]) );
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int32_t ip = *( (int32_t*) &(m_dataBlock->m_superBlocks[blockIndex].m_protectedBlock.buf[sampleIndex*m_sampleSize+4]) );
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s.setReal(rp>>8);
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s.setImag(ip>>8);
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}
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else if ((sizeof(Sample) == 8) && (m_sampleSize == 4))
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{
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int32_t rp = *( (int16_t*) &(m_dataBlock->m_superBlocks[blockIndex].m_protectedBlock.buf[sampleIndex*m_sampleSize]) );
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int32_t ip = *( (int16_t*) &(m_dataBlock->m_superBlocks[blockIndex].m_protectedBlock.buf[sampleIndex*m_sampleSize+2]) );
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s.setReal(rp<<8);
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s.setImag(ip<<8);
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}
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else
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{
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s = Sample{0, 0};
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}
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}
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};
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#endif /* SDRDAEMON_CHANNEL_SDRDAEMONDATAREADQUEUE_H_ */
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