sdrangel/plugins/samplesource/v4l-msi/v4lthread.h

70 wiersze
2.4 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_V4LTHREAD_H
#define INCLUDE_V4LTHREAD_H
#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include "dsp/samplefifo.h"
#include "dsp/inthalfbandfilter.h"
// lowest samplerate in the kernel is 1.2M, but this works better
#define SAMPLERATE 1536000
#define IF_BANDWIDTH 300000
#define FCD_BLOCKSIZE 8192
class V4LThread : public QThread {
Q_OBJECT
public:
V4LThread(SampleFifo* sampleFifo, double frequency, QObject* parent = NULL);
~V4LThread();
void stopWork();
void OpenSource(const char *filename);
void CloseSource();
void set_sample_rate(double samp_rate);
void set_center_freq(double freq);
void set_bandwidth(double bandwidth);
void set_tuner_gain(double gain);
void set_amps(bool lna, bool on);
int work(int n_items);
private:
int fd;
quint32 pixelformat;
struct v4l_buffer *buffers;
unsigned int n_buffers;
void *recebuf_ptr;
unsigned int recebuf_len;
unsigned int recebuf_mmap_index;
double centerFreq;
QMutex m_startWaitMutex;
QWaitCondition m_startWaiter;
bool m_running;
SampleVector m_convertBuffer;
SampleFifo* m_sampleFifo;
void run();
};
#endif // INCLUDE_V4LTHREAD_H