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6f50f90b9c
Removes the FIFO writer thread in the audio engine to simplify inter-thread communication and avoid deadlock bugs. --------- Co-authored-by: szeli1 <143485814+szeli1@users.noreply.github.com> Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com>
113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
/*
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* AudioPortAudio.h - device-class that performs PCM-output via PortAudio
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*
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* Copyright (c) 2008 Csaba Hruska <csaba.hruska/at/gmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef LMMS_AUDIO_PORTAUDIO_H
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#define LMMS_AUDIO_PORTAUDIO_H
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#include "lmmsconfig.h"
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#ifdef LMMS_HAVE_PORTAUDIO
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#include <QComboBox>
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#include <QFormLayout>
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#include <QString>
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#include <QWidget>
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#include <portaudio.h>
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#include "AudioDevice.h"
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#include "AudioDeviceSetupWidget.h"
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namespace lmms {
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namespace detail {
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class PortAudioInitializationGuard
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{
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public:
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PortAudioInitializationGuard()
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: m_error(Pa_Initialize())
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{
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if (m_error != paNoError) { throw std::runtime_error{"PortAudio: could not initialize"}; }
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}
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~PortAudioInitializationGuard()
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{
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if (m_error == paNoError) { Pa_Terminate(); }
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}
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PortAudioInitializationGuard(const PortAudioInitializationGuard&) = delete;
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PortAudioInitializationGuard(PortAudioInitializationGuard&&) = delete;
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PortAudioInitializationGuard& operator=(const PortAudioInitializationGuard&) = delete;
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PortAudioInitializationGuard& operator=(PortAudioInitializationGuard&&) = delete;
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private:
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PaError m_error = paNoError;
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};
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} // namespace detail
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class AudioPortAudio : public AudioDevice
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{
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public:
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AudioPortAudio(bool& successful, AudioEngine* engine);
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~AudioPortAudio() override;
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AudioPortAudio(const AudioPortAudio&) = delete;
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AudioPortAudio(AudioPortAudio&&) = delete;
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AudioPortAudio& operator=(const AudioPortAudio&) = delete;
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AudioPortAudio& operator=(AudioPortAudio&&) = delete;
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static auto name() -> QString { return QT_TRANSLATE_NOOP("AudioDeviceSetupWidget", "PortAudio"); }
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private:
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void startProcessingImpl() override;
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void stopProcessingImpl() override;
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static int processCallback(const void* input, void* output, unsigned long frameCount,
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const PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags statusFlags, void* userData);
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detail::PortAudioInitializationGuard m_initGuard;
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PaStream* m_paStream = nullptr;
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};
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} // namespace lmms
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namespace lmms::gui {
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class AudioPortAudioSetupWidget : public AudioDeviceSetupWidget
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{
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public:
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AudioPortAudioSetupWidget(QWidget* parent);
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void show() override;
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void saveSettings() override;
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private:
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class DeviceSelectorWidget;
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QComboBox* m_backendComboBox = nullptr;
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DeviceSelectorWidget* m_inputDevice = nullptr;
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DeviceSelectorWidget* m_outputDevice = nullptr;
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};
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} // namespace lmms::gui
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#endif // LMMS_HAVE_PORTAUDIO
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#endif // LMMS_AUDIO_PORTAUDIO_H
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