Source/WebCore/platform/audio/AudioSourceProvider.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#ifndef AudioSourceProvider_h
#define AudioSourceProvider_h

namespace WebCore {

class AudioBus;
class AudioSourceProviderClient;
    
// Abstract base-class for a pull-model client.
class AudioSourceProvider {
public:
    // provideInput() gets called repeatedly to render time-slices of a continuous audio stream.
    virtual void provideInput(AudioBus* bus, size_t framesToProcess) = 0;

    // If a client is set, we call it back when the audio format is available or changes.
    virtual void setClient(AudioSourceProviderClient*) { };

    virtual ~AudioSourceProvider() = default;
};

} // WebCore

#endif // AudioSourceProvider_h