kopia lustrzana https://github.com/markondej/fm_transmitter
99 wiersze
3.3 KiB
C++
99 wiersze
3.3 KiB
C++
/*
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fm_transmitter - use Raspberry Pi as FM transmitter
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Copyright (c) 2018, 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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#include "transmitter.h"
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#include <cstdlib>
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#include <csignal>
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#include <iostream>
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#include <unistd.h>
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using namespace std;
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bool stop = false;
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Transmitter* transmitter = NULL;
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void sigIntHandler(int sigNum)
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{
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if (transmitter != NULL) {
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cout << "Stopping..." << endl;
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transmitter->stop();
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stop = true;
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}
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}
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int main(int argc, char** argv)
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{
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double frequency = 100.0;
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bool loop = false;
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string filename;
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bool showUsage = true;
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int opt;
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while ((opt = getopt(argc, argv, "rf:")) != -1) {
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switch (opt) {
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case 'r':
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loop = true;
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break;
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case 'f':
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frequency = ::atof(optarg);
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break;
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}
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}
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if (optind < argc) {
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filename = argv[optind];
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showUsage = false;
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}
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if (showUsage) {
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cout << "Usage: " << argv[0] << " [-f frequency] [-r] FILE" << endl;
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return 0;
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}
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signal(SIGINT, sigIntHandler);
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try {
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transmitter = Transmitter::getInstance();
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WaveReader reader(filename != "-" ? filename : string(), stop);
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PCMWaveHeader header = reader.getHeader();
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cout << "Playing: " << reader.getFilename() << ", "
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<< header.sampleRate << " Hz, "
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<< header.bitsPerSample << " bits, "
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<< ((header.channels > 0x01) ? "stereo" : "mono") << endl;
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transmitter->play(&reader, frequency, 0, loop);
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} catch (exception &error) {
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cout << "Error: " << error.what() << endl;
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return 1;
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}
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return 0;
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}
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