AudioSdl.h

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/*
 * AudioSdl.h - device-class that performs PCM-output via SDL
 *
 * Copyright (c) 2004-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_AUDIO_SDL_H
#define LMMS_AUDIO_SDL_H
 
#include "lmmsconfig.h"
 
#ifdef LMMS_HAVE_SDL
 
#include <SDL2/SDL_audio.h>
 
#include "AudioDevice.h"
#include "AudioDeviceSetupWidget.h"
 
class QComboBox;
 
namespace lmms
{
 
class AudioSdl : public AudioDevice
{
public:
    AudioSdl( bool & _success_ful, AudioEngine* audioEngine );
    ~AudioSdl() override;
 
    inline static QString name()
    {
        return QT_TRANSLATE_NOOP( "AudioDeviceSetupWidget",
                    "SDL (Simple DirectMedia Layer)" );
    }
 
 
    class setupWidget : public gui::AudioDeviceSetupWidget
    {
    public:
        setupWidget( QWidget * _parent );
        ~setupWidget() override = default;
 
        void saveSettings() override;
    
    private:
        void populatePlaybackDeviceComboBox();
        void populateInputDeviceComboBox();
 
    private:
        QComboBox* m_playbackDeviceComboBox = nullptr;
        QComboBox* m_inputDeviceComboBox = nullptr;
 
        static QString s_systemDefaultDevice;
    } ;
 
 
private:
    void startProcessingImpl() override;
    void stopProcessingImpl() override;
 
    static void sdlAudioCallback( void * _udata, Uint8 * _buf, int _len );
    void sdlAudioCallback( Uint8 * _buf, int _len );
 
    static void sdlInputAudioCallback( void * _udata, Uint8 * _buf, int _len );
    void sdlInputAudioCallback( Uint8 * _buf, int _len );
 
    SDL_AudioSpec m_audioHandle;
    SDL_AudioDeviceID m_outputDevice;
 
    SDL_AudioSpec m_inputAudioHandle;
    SDL_AudioDeviceID m_inputDevice;
} ;
 
 
} // namespace lmms
 
#endif // LMMS_HAVE_SDL
 
#endif // LMMS_AUDIO_SDL_H