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https://github.com/LMMS/lmms.git
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162 lines
3.5 KiB
C++
162 lines
3.5 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 <QObject>
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#include "lmmsconfig.h"
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#include "ComboBoxModel.h"
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#ifdef LMMS_HAVE_PORTAUDIO
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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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# if defined paNeverDropInput || defined paNonInterleaved
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# define PORTAUDIO_V19
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# else
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# define PORTAUDIO_V18
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# endif
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#endif
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namespace lmms
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{
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class AudioPortAudioSetupUtil : public QObject
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{
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Q_OBJECT
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public slots:
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void updateBackends();
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void updateDevices();
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void updateChannels();
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public:
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ComboBoxModel m_backendModel;
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ComboBoxModel m_deviceModel;
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};
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#ifdef LMMS_HAVE_PORTAUDIO
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namespace gui
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{
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class ComboBox;
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class LcdSpinBox;
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}
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class AudioPortAudio : public AudioDevice
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{
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public:
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AudioPortAudio( bool & _success_ful, AudioEngine* audioEngine );
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~AudioPortAudio() override;
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inline static QString name()
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{
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return QT_TRANSLATE_NOOP( "AudioDeviceSetupWidget", "PortAudio" );
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}
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int process_callback(const float* _inputBuffer, float* _outputBuffer, f_cnt_t _framesPerBuffer);
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class setupWidget : public gui::AudioDeviceSetupWidget
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{
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public:
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setupWidget( QWidget * _parent );
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~setupWidget() override;
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void saveSettings() override;
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void show() override;
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private:
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gui::ComboBox * m_backend;
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gui::ComboBox * m_device;
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AudioPortAudioSetupUtil m_setupUtil;
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} ;
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private:
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void startProcessing() override;
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void stopProcessing() override;
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#ifdef PORTAUDIO_V19
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static int _process_callback( const void *_inputBuffer, void * _outputBuffer,
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unsigned long _framesPerBuffer,
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const PaStreamCallbackTimeInfo * _timeInfo,
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PaStreamCallbackFlags _statusFlags,
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void *arg );
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#else
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#define paContinue 0
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#define paComplete 1
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#define Pa_GetDeviceCount Pa_CountDevices
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#define Pa_GetDefaultInputDevice Pa_GetDefaultInputDeviceID
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#define Pa_GetDefaultOutputDevice Pa_GetDefaultOutputDeviceID
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#define Pa_IsStreamActive Pa_StreamActive
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static int _process_callback( void * _inputBuffer, void * _outputBuffer,
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unsigned long _framesPerBuffer, PaTimestamp _outTime, void * _arg );
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using PaTime = double;
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using PaDeviceIndex = PaDeviceID;
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using PaStreamParameters = struct
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{
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PaDeviceIndex device;
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int channelCount;
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PaSampleFormat sampleFormat;
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PaTime suggestedLatency;
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void *hostApiSpecificStreamInfo;
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} PaStreamParameters;
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#endif // PORTAUDIO_V19
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PaStream * m_paStream;
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PaStreamParameters m_outputParameters;
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PaStreamParameters m_inputParameters;
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bool m_wasPAInitError;
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SampleFrame* m_outBuf;
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std::size_t m_outBufPos;
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fpp_t m_outBufSize;
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bool m_stopped;
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} ;
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#endif // LMMS_HAVE_PORTAUDIO
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} // namespace lmms
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#endif // LMMS_AUDIO_PORTAUDIO_H
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