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79 lines
3.5 KiB
C++
79 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 F4EXB //
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// written by Edouard Griffiths //
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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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// (at your option) any later version. //
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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 SDRBASE_DSP_BASEBANDSAMPLESOURCE_H_
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#define SDRBASE_DSP_BASEBANDSAMPLESOURCE_H_
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#include <QObject>
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#include "dsp/dsptypes.h"
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#include "dsp/samplesourcefifo.h"
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#include "export.h"
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#include "util/messagequeue.h"
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class Message;
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class SDRBASE_API BasebandSampleSource : public QObject {
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Q_OBJECT
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public:
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BasebandSampleSource();
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virtual ~BasebandSampleSource();
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virtual void start() = 0;
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virtual void stop() = 0;
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virtual void pull(Sample& sample) = 0;
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virtual void pullAudio(int nbSamples) { (void) nbSamples; }
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/** direct feeding of sample source FIFO */
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void feed(SampleSourceFifo* sampleFifo, int nbSamples)
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{
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SampleVector::iterator writeAt;
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sampleFifo->getWriteIterator(writeAt);
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pullAudio(nbSamples); // Pre-fetch input audio samples this is mandatory to keep things running smoothly
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for (int i = 0; i < nbSamples; i++)
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{
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pull((*writeAt));
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sampleFifo->bumpIndex(writeAt);
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}
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}
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SampleSourceFifo& getSampleSourceFifo() { return m_sampleFifo; }
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virtual bool handleMessage(const Message& cmd) = 0; //!< Processing of a message. Returns true if message has actually been processed
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MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; } //!< Get the queue for asynchronous inbound communication
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virtual void setMessageQueueToGUI(MessageQueue *queue) { m_guiMessageQueue = queue; }
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MessageQueue *getMessageQueueToGUI() { return m_guiMessageQueue; }
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void setDeviceSampleSourceFifo(SampleSourceFifo *deviceSampleFifo);
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protected:
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MessageQueue m_inputMessageQueue; //!< Queue for asynchronous inbound communication
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MessageQueue *m_guiMessageQueue; //!< Input message queue to the GUI
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SampleSourceFifo m_sampleFifo; //!< Internal FIFO for multi-channel processing
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SampleSourceFifo *m_deviceSampleFifo; //!< Reference to the device FIFO for single channel processing
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void handleWriteToFifo(SampleSourceFifo *sampleFifo, int nbSamples);
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protected slots:
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void handleInputMessages();
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void handleWriteToFifo(int nbSamples);
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void handleWriteToDeviceFifo(int nbSamples);
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};
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#endif /* SDRBASE_DSP_BASEBANDSAMPLESOURCE_H_ */
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