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bd857272f4
SDL audio init will fail on Windows if all audio output devices are disabled. Only about 10 engines are checking for this case and numerous pieces of common code (EmulatedOPL, VideoDecoder) fail as well, so this acts as a fallback to prevent instability.
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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
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* GNU 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 License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef BACKENDS_MIXER_ABSTRACT_H
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#define BACKENDS_MIXER_ABSTRACT_H
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#include "audio/mixer_intern.h"
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/**
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* Abstract class for mixer manager. Subclasses
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* implement the real functionality.
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*/
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class MixerManager {
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public:
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MixerManager() : _mixer(0), _audioSuspended(false) {}
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virtual ~MixerManager() { delete _mixer; }
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/**
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* Initialize and setups the mixer
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*/
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virtual void init() = 0;
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/**
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* Get the audio mixer implementation
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*/
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Audio::Mixer *getMixer() { return (Audio::Mixer *)_mixer; }
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// Used by LinuxMoto Port
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/**
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* Pauses the audio system
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*/
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virtual void suspendAudio() = 0;
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/**
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* Resumes the audio system
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*/
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virtual int resumeAudio() = 0;
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/**
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* Returns true if this is a null device and won't output any audio.
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*/
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virtual bool isNullDevice() const { return false; }
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protected:
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/** The mixer implementation */
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Audio::MixerImpl *_mixer;
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/** State of the audio system */
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bool _audioSuspended;
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};
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#endif
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