mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-15 21:01:45 -05:00
158 lines
4.5 KiB
C++
158 lines
4.5 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 "hackrfoutputthread.h"
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include "dsp/samplesourcefifo.h"
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HackRFOutputThread::HackRFOutputThread(hackrf_device* dev, SampleSourceFifo* sampleFifo, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_dev(dev),
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m_sampleFifo(sampleFifo),
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m_log2Interp(0)
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{
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std::fill(m_buf, m_buf + 2*HACKRF_BLOCKSIZE, 0);
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}
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HackRFOutputThread::~HackRFOutputThread()
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{
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stopWork();
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}
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void HackRFOutputThread::startWork()
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{
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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 HackRFOutputThread::stopWork()
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{
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if (!m_running) return;
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qDebug("HackRFOutputThread::stopWork");
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m_running = false;
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wait();
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}
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void HackRFOutputThread::setLog2Interpolation(unsigned int log2Interp)
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{
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m_log2Interp = log2Interp;
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}
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void HackRFOutputThread::run()
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{
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hackrf_error rc;
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m_running = true;
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m_startWaiter.wakeAll();
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if (hackrf_is_streaming(m_dev) == HACKRF_TRUE)
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{
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qDebug("HackRFInputThread::run: HackRF is streaming already");
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}
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else
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{
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qDebug("HackRFInputThread::run: HackRF is not streaming");
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rc = (hackrf_error) hackrf_start_tx(m_dev, tx_callback, this);
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if (rc == HACKRF_SUCCESS)
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{
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qDebug("HackRFOutputThread::run: started HackRF Tx");
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}
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else
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{
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qDebug("HackRFOutputThread::run: failed to start HackRF Tx: %s", hackrf_error_name(rc));
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}
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}
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while ((m_running) && (hackrf_is_streaming(m_dev) == HACKRF_TRUE))
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{
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usleep(200000);
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}
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if (hackrf_is_streaming(m_dev) == HACKRF_TRUE)
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{
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rc = (hackrf_error) hackrf_stop_tx(m_dev);
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if (rc == HACKRF_SUCCESS)
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{
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qDebug("HackRFOutputThread::run: stopped HackRF Tx");
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}
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else
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{
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qDebug("HackRFOutputThread::run: failed to stop HackRF Tx: %s", hackrf_error_name(rc));
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}
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}
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m_running = false;
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}
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// Interpolate according to specified log2 (ex: log2=4 => interp=16)
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void HackRFOutputThread::callback(qint8* buf, qint32 len)
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{
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SampleVector::iterator beginRead;
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m_sampleFifo->readAdvance(beginRead, len/(2*(1<<m_log2Interp)));
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beginRead -= len/2;
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if (m_log2Interp == 0)
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{
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m_interpolators.interpolate1(&beginRead, buf, len);
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}
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else
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{
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switch (m_log2Interp)
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{
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case 1:
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m_interpolators.interpolate2_cen(&beginRead, buf, len);
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break;
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case 2:
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m_interpolators.interpolate4_cen(&beginRead, buf, len);
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break;
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case 3:
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m_interpolators.interpolate8_cen(&beginRead, buf, len);
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break;
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case 4:
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m_interpolators.interpolate16_cen(&beginRead, buf, len);
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break;
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case 5:
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m_interpolators.interpolate32_cen(&beginRead, buf, len);
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break;
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case 6:
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m_interpolators.interpolate64_cen(&beginRead, buf, len);
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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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int HackRFOutputThread::tx_callback(hackrf_transfer* transfer)
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{
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HackRFOutputThread *thread = (HackRFOutputThread *) transfer->tx_ctx;
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qint32 bytes_to_write = transfer->valid_length;
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thread->callback((qint8 *) transfer->buffer, bytes_to_write);
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return 0;
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}
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