NULLDevice.h

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/*******************************************************************************
 * Copyright 2009-2016 Jörg Müller
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
 
#pragma once
 
#include "devices/IDevice.h"
#include "devices/IHandle.h"
 
AUD_NAMESPACE_BEGIN
 
class IReader;
 
class AUD_API NULLDevice : public IDevice
{
private:
    class AUD_LOCAL NULLHandle : public IHandle
    {
    private:
        // delete copy constructor and operator=
        NULLHandle(const NULLHandle&) = delete;
        NULLHandle& operator=(const NULLHandle&) = delete;
 
    public:
 
        NULLHandle();
 
        virtual ~NULLHandle() {}
        virtual bool pause();
        virtual bool resume();
        virtual bool stop();
        virtual bool getKeep();
        virtual bool setKeep(bool keep);
        virtual bool seek(double position);
        virtual double getPosition();
        virtual Status getStatus();
        virtual float getVolume();
        virtual bool setVolume(float volume);
        virtual float getPitch();
        virtual bool setPitch(float pitch);
        virtual int getLoopCount();
        virtual bool setLoopCount(int count);
        virtual bool setStopCallback(stopCallback callback = 0, void* data = 0);
    };
 
    // delete copy constructor and operator=
    NULLDevice(const NULLDevice&) = delete;
    NULLDevice& operator=(const NULLDevice&) = delete;
 
public:
    NULLDevice();
 
    virtual ~NULLDevice();
 
    virtual DeviceSpecs getSpecs() const;
    virtual std::shared_ptr<IHandle> play(std::shared_ptr<IReader> reader, bool keep = false);
    virtual std::shared_ptr<IHandle> play(std::shared_ptr<ISound> sound, bool keep = false);
    virtual void stopAll();
    virtual void lock();
    virtual void unlock();
    virtual float getVolume() const;
    virtual void setVolume(float volume);
    virtual ISynchronizer* getSynchronizer();
 
    static void registerPlugin();
};
 
AUD_NAMESPACE_END