kopia lustrzana https://github.com/markondej/fm_transmitter
63 wiersze
2.7 KiB
C++
63 wiersze
2.7 KiB
C++
/*
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FM Transmitter - use Raspberry Pi as FM transmitter
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Copyright (c) 2021, Marcin Kondej
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All rights reserved.
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See https://github.com/markondej/fm_transmitter
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Redistribution and use in source and binary forms, with or without modification, are
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permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or other
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materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors may be
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used to endorse or promote products derived from this software without specific
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prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "wave_reader.hpp"
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#include <condition_variable>
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#include <thread>
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class ClockOutput;
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class Transmitter
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{
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public:
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Transmitter();
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virtual ~Transmitter();
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Transmitter(const Transmitter &) = delete;
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Transmitter(Transmitter &&) = delete;
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Transmitter &operator=(const Transmitter &) = delete;
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void Transmit(WaveReader &reader, float frequency, float bandwidth, unsigned dmaChannel, bool preserveCarrier);
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void Stop();
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private:
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void TxViaCpu(WaveReader &reader, unsigned sampleRate, unsigned bufferSize, unsigned clockDivisor, unsigned divisorRange);
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void TxViaDma(WaveReader &reader, unsigned sampleRate, unsigned bufferSize, unsigned clockDivisor, unsigned divisorRange, unsigned dmaChannel);
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void CpuTxThread(unsigned sampleRate, unsigned clockDivisor, unsigned divisorRange, unsigned *sampleOffset, std::vector<Sample> *samples, bool *stop);
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std::condition_variable cv;
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std::thread txThread;
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ClockOutput *output;
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std::mutex mtx;
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bool enable;
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};
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