mirror of
https://github.com/f4exb/sdrangel.git
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202 lines
6.5 KiB
C++
202 lines
6.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017 Edouard Griffiths, F4EXB //
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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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#include "plutosdr/deviceplutosdrbox.h"
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#include "plutosdrinputsettings.h"
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#include "plutosdrinputthread.h"
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PlutoSDRInputThread::PlutoSDRInputThread(uint32_t blocksize, DevicePlutoSDRBox* plutoBox, SampleSinkFifo* sampleFifo, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_plutoBox(plutoBox),
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m_blockSize(blocksize),
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m_convertBuffer(1<<15),
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m_sampleFifo(sampleFifo),
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m_convertIt(m_convertBuffer.begin()),
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m_log2Decim(0),
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m_fcPos(PlutoSDRInputSettings::FC_POS_CENTER),
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m_phasor(0)
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{
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m_buf = new qint16[blocksize*(sizeof(Sample)/sizeof(qint16))];
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}
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PlutoSDRInputThread::~PlutoSDRInputThread()
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{
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stopWork();
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delete[] m_buf;
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}
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void PlutoSDRInputThread::startWork()
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{
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if (m_running) return; // return if running already
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m_startWaitMutex.lock();
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start();
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while(!m_running)
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m_startWaiter.wait(&m_startWaitMutex, 100);
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m_startWaitMutex.unlock();
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}
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void PlutoSDRInputThread::stopWork()
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{
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if (!m_running) return; // return if not running
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m_running = false;
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wait();
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}
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void PlutoSDRInputThread::setLog2Decimation(unsigned int log2_decim)
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{
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m_log2Decim = log2_decim;
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}
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void PlutoSDRInputThread::setFcPos(int fcPos)
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{
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m_fcPos = fcPos;
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}
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void PlutoSDRInputThread::run()
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{
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m_running = true;
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m_startWaiter.wakeAll();
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while (m_running)
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{
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ssize_t nbytes_rx;
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char *p_dat, *p_end;
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std::ptrdiff_t p_inc;
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int is;
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// Refill RX buffer
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nbytes_rx = m_plutoBox->rxBufferRefill();
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if (nbytes_rx < 0) { qWarning("PlutoSDRInputThread::run: error refilling buf %d\n",(int) nbytes_rx); break; }
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// READ: Get pointers to RX buf and read IQ from RX buf port 0
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p_inc = m_plutoBox->rxBufferStep();
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p_end = m_plutoBox->rxBufferEnd();
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is = 0;
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for (p_dat = m_plutoBox->rxBufferFirst(); p_dat < p_end; p_dat += p_inc)
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{
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memcpy(&m_buf[2*is], p_dat, 2*sizeof(int16_t));
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is++;
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}
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m_sampleFifo->write((unsigned char *) m_buf, is*2*sizeof(int16_t));
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}
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m_running = false;
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}
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// Decimate according to specified log2 (ex: log2=4 => decim=16)
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void PlutoSDRInputThread::convert()
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{
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if (m_log2Decim == 0)
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{
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m_decimators.decimate1(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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}
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else
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{
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if (m_fcPos == 0) // Infra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimators.decimate2_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 2:
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m_decimators.decimate4_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 3:
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m_decimators.decimate8_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 4:
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m_decimators.decimate16_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 5:
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m_decimators.decimate32_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 6:
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m_decimators.decimate64_inf(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 1) // Supra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimators.decimate2_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 2:
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m_decimators.decimate4_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 3:
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m_decimators.decimate8_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 4:
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m_decimators.decimate16_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 5:
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m_decimators.decimate32_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 6:
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m_decimators.decimate64_sup(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 2) // Center
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimators.decimate2_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 2:
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m_decimators.decimate4_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 3:
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m_decimators.decimate8_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 4:
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m_decimators.decimate16_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 5:
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m_decimators.decimate32_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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case 6:
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m_decimators.decimate64_cen(&m_convertIt, m_buf, 2*(1<<m_log2Decim));
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break;
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default:
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break;
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}
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}
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}
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++m_convertIt;
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if (m_convertIt == m_convertBuffer.end())
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{
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m_sampleFifo->write(m_convertBuffer.begin(), m_convertBuffer.end());
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m_convertIt = m_convertBuffer.begin();
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}
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}
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