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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
#define CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
namespace media {
class AudioInputDevice;
}
namespace content {
class RendererAudioOutputDevice;
// A factory for creating RendererAudioOutputDevices. There is a global factory
// function that can be installed for the purposes of testing to provide
// a specialized AudioRendererSink class.
class AudioDeviceFactory {
public:
// Creates a RendererAudioOutputDevice using the currently registered factory.
static scoped_refptr<RendererAudioOutputDevice> NewOutputDevice();
// Creates an AudioInputDevice using the currently registered factory,
static scoped_refptr<media::AudioInputDevice> NewInputDevice();
protected:
AudioDeviceFactory();
virtual ~AudioDeviceFactory();
// You can derive from this class and specify an implementation for these
// functions to provide alternate audio device implementations.
// If the return value of either of these function is NULL, we fall back
// on the default implementation.
virtual RendererAudioOutputDevice* CreateOutputDevice() = 0;
virtual media::AudioInputDevice* CreateInputDevice() = 0;
private:
// The current globally registered factory. This is NULL when we should
// create the default AudioRendererSinks.
static AudioDeviceFactory* factory_;
DISALLOW_COPY_AND_ASSIGN(AudioDeviceFactory);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
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