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145 lines
4.1 KiB
C++
145 lines
4.1 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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// Copyright (C) 2013 by Dimitri Stolnikov <horiz0n@gmx.net> //
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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 "gnuradiothread.h"
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#include "dsp/samplefifo.h"
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#include <gnuradio/sync_block.h>
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#include <gnuradio/io_signature.h>
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////////////////////////////////////////////////////////////////////////////////
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class gr_adaptor;
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typedef boost::shared_ptr< gr_adaptor > gr_adaptor_sptr;
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gr_adaptor_sptr make_gr_adaptor (SampleFifo* sampleFifo);
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class gr_adaptor : public gr::sync_block
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{
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public:
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gr_adaptor (SampleFifo* sampleFifo);
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~gr_adaptor ();
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int work (int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items);
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private:
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SampleFifo *m_sampleFifo;
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};
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gr_adaptor_sptr
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make_gr_adaptor (SampleFifo *sampleFifo)
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{
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return gr_adaptor_sptr (new gr_adaptor (sampleFifo));
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}
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gr_adaptor::gr_adaptor (SampleFifo *sampleFifo)
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: gr::sync_block("gr_adaptor",
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gr::io_signature::make(1, 1, sizeof (gr_complex)),
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gr::io_signature::make(0, 0, 0)),
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m_sampleFifo(sampleFifo)
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{
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}
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gr_adaptor::~gr_adaptor ()
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{
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}
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int
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gr_adaptor::work (int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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const gr_complex *in = (const gr_complex *) input_items[0];
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std::vector<qint16> buffer(noutput_items * 2, 0);
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std::vector<qint16>::iterator it = buffer.begin();
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for (int i = 0; i < noutput_items; i++)
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{
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*it++ = in[i].real() * 32000;
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*it++ = in[i].imag() * 32000;
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}
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// we must push at least 4 bytes into the fifo
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m_sampleFifo->write((const quint8*)buffer.data(),
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(it - buffer.begin()) * sizeof(qint16));
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// Tell runtime system how many input items we consumed on
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// each input stream.
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consume_each(noutput_items);
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// Tell runtime system how many output items we produced.
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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GnuradioThread::GnuradioThread(QString args, SampleFifo* sampleFifo, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_args(args),
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m_sampleFifo(sampleFifo)
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{
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}
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GnuradioThread::~GnuradioThread()
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{
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stopWork();
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}
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void GnuradioThread::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 GnuradioThread::stopWork()
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{
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m_running = false;
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m_top->stop();
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wait();
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}
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void GnuradioThread::run()
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{
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m_top = gr::make_top_block( "flowgraph" );
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m_src = osmosdr::source::make( m_args.toStdString() );
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/* now since we've constructed our shared objects, we allow the calling
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* thread to continue it's work and send some radio settings to us. */
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m_running = true;
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m_startWaiter.wakeAll();
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gr_adaptor_sptr adaptor = make_gr_adaptor(m_sampleFifo);
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m_top->connect(m_src, 0, adaptor, 0);
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m_top->run();
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m_running = false;
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}
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