105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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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 <stdio.h>
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#include <errno.h>
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#include "osmosdrthread.h"
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#include "dsp/samplefifo.h"
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OsmoSDRThread::OsmoSDRThread(osmosdr_dev_t* dev, SampleFifo* 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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{
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}
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OsmoSDRThread::~OsmoSDRThread()
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{
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stopWork();
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}
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void OsmoSDRThread::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 OsmoSDRThread::stopWork()
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{
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m_running = false;
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wait();
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}
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void OsmoSDRThread::run()
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{
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int res;
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m_sampleFifo->readCommit(m_sampleFifo->fill());
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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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if((res = osmosdr_read_async(m_dev, &OsmoSDRThread::callbackHelper, this, 16, sizeof(Sample) * 16384)) < 0) {
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qCritical("OsmoSDRThread: async error: %s", strerror(errno));
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break;
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}
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}
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m_running = false;
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}
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void OsmoSDRThread::checkData(const quint8* buf, qint32 len)
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{
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const Sample* s = (const Sample*)buf;
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len /= sizeof(Sample);
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while(len) {
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if((s->i != m_nextI) || (s->q != m_nextQ)) {
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qDebug("continuity error after %llu samples", m_samplePos);
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m_samplePos = 0;
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m_nextI = s->i - 1;
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m_nextQ = s->q + 1;
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} else {
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m_nextI--;
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m_nextQ++;
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m_samplePos++;
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}
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len--;
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s++;
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}
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}
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void OsmoSDRThread::callback(const quint8* buf, qint32 len)
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{
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//checkData(buf, len);
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m_sampleFifo->write(buf, len);
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if(!m_running)
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osmosdr_cancel_async(m_dev);
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}
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void OsmoSDRThread::callbackHelper(unsigned char* buf, uint32_t len, void* ctx)
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{
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OsmoSDRThread* thread = (OsmoSDRThread*)ctx;
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thread->callback(buf, len);
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}
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