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70 lines
2.4 KiB
C++
70 lines
2.4 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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#ifndef INCLUDE_V4LTHREAD_H
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#define INCLUDE_V4LTHREAD_H
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#include <QThread>
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#include <QMutex>
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#include <QWaitCondition>
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#include "dsp/samplefifo.h"
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#include "dsp/inthalfbandfilter.h"
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// lowest samplerate in the kernel is 1.2M, but this works better
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#define SAMPLERATE 1536000
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#define IF_BANDWIDTH 300000
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#define FCD_BLOCKSIZE 8192
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class V4LThread : public QThread {
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Q_OBJECT
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public:
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V4LThread(SampleFifo* sampleFifo, double frequency, QObject* parent = NULL);
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~V4LThread();
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void stopWork();
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void OpenSource(const char *filename);
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void CloseSource();
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void set_sample_rate(double samp_rate);
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void set_center_freq(double freq);
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void set_bandwidth(double bandwidth);
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void set_tuner_gain(double gain);
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void set_amps(bool lna, bool on);
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int work(int n_items);
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private:
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int fd;
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quint32 pixelformat;
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struct v4l_buffer *buffers;
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unsigned int n_buffers;
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void *recebuf_ptr;
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unsigned int recebuf_len;
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unsigned int recebuf_mmap_index;
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double centerFreq;
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QMutex m_startWaitMutex;
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QWaitCondition m_startWaiter;
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bool m_running;
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SampleVector m_convertBuffer;
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SampleFifo* m_sampleFifo;
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void run();
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};
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#endif // INCLUDE_V4LTHREAD_H
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