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105 lines
2.8 KiB
C++
105 lines
2.8 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 <QDebug>
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#include <stdio.h>
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#include <errno.h>
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#include "fcdproplusthread.h"
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#include "dsp/samplesinkfifo.h"
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#include "fcdtraits.h"
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FCDProPlusThread::FCDProPlusThread(SampleSinkFifo* sampleFifo, snd_pcm_t *fcd_handle, QObject* parent) :
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QThread(parent),
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m_fcd_handle(fcd_handle),
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m_running(false),
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m_convertBuffer(fcd_traits<ProPlus>::convBufSize),
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m_sampleFifo(sampleFifo)
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{
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start();
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}
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FCDProPlusThread::~FCDProPlusThread()
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{
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}
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void FCDProPlusThread::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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{
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m_startWaiter.wait(&m_startWaitMutex, 100);
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}
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m_startWaitMutex.unlock();
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}
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void FCDProPlusThread::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 FCDProPlusThread::run()
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{
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m_running = true;
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qDebug("FCDThread::run: start running loop");
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while (m_running)
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{
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if (work(fcd_traits<ProPlus>::convBufSize) < 0) {
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break;
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}
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}
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qDebug("FCDThread::run: running loop stopped");
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}
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int FCDProPlusThread::work(int n_items)
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{
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int l;
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SampleVector::iterator it;
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void *out;
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it = m_convertBuffer.begin();
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out = (void *)&it[0];
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l = snd_pcm_mmap_readi(m_fcd_handle, out, (snd_pcm_uframes_t)n_items);
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if (l > 0)
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{
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m_sampleFifo->write(it, it + l);
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}
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else
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{
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if (l == -EPIPE) {
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qDebug("FCDProPlusThread::work: Overrun detected");
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} else if (l < 0) {
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qDebug("FCDProPlusThread::work: snd_pcm_mmap_readi failed with code %d", l);
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} else {
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qDebug("FCDProPlusThread::work: snd_pcm_mmap_readi empty");
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}
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return 0;
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}
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return l;
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}
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