69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
#include "AudioThread.h"
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#include "CubicSDRDefs.h"
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#include <vector>
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AudioThread::AudioThread(AudioThreadInputQueue *inputQueue) :
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inputQueue(inputQueue), stream(NULL), terminated(false) {
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}
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AudioThread::~AudioThread() {
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PaError err;
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err = Pa_StopStream(stream);
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err = Pa_CloseStream(stream);
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Pa_Terminate();
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std::cout << std::endl << "Audio Thread Done." << std::endl << std::endl;
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}
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void AudioThread::threadMain() {
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PaError err;
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err = Pa_Initialize();
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if (err != paNoError) {
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std::cout << "Error starting portaudio :(\n";
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return;
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}
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int preferred_device = -1;
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outputParameters.device =
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(preferred_device != -1) ?
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preferred_device : Pa_GetDefaultOutputDevice();
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if (outputParameters.device == paNoDevice) {
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std::cout << "Error: No default output device.\n";
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}
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outputParameters.channelCount = 2;
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outputParameters.sampleFormat = paFloat32;
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outputParameters.suggestedLatency = Pa_GetDeviceInfo(
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outputParameters.device)->defaultHighOutputLatency;
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outputParameters.hostApiSpecificStreamInfo = NULL;
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stream = NULL;
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err = Pa_OpenStream(&stream, NULL, &outputParameters, AUDIO_FREQUENCY,
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paFramesPerBufferUnspecified, paClipOff, NULL, NULL);
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err = Pa_StartStream(stream);
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if (err != paNoError) {
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std::cout << "Error starting stream: " << Pa_GetErrorText(err)
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<< std::endl;
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std::cout << "\tPortAudio error: " << Pa_GetErrorText(err) << std::endl;
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}
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while (!terminated) {
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AudioThreadInput inp;
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inputQueue->pop(inp);
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if (inp.data.size()) {
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Pa_WriteStream(stream, &inp.data[0], inp.data.size()/2);
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}
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}
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}
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void AudioThread::terminate() {
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std::cout << "Terminating audio thread.." << std::endl;
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terminated = true;
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AudioThreadInput endCond; // push an empty input to bump the queue
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inputQueue->push(endCond);
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}
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