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// Copyright 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 CC_LAYERS_TEXTURE_LAYER_CLIENT_H_
#define CC_LAYERS_TEXTURE_LAYER_CLIENT_H_
#include "cc/resources/single_release_callback.h"
namespace WebKit { class WebGraphicsContext3D; }
namespace cc {
class ResourceUpdateQueue;
class TextureMailbox;
class TextureLayerClient {
public:
// Called to prepare this layer's texture for compositing.
// Returns the texture ID to be used for compositing.
virtual unsigned PrepareTexture() = 0;
// Returns the context that is providing the texture. Used for rate limiting
// and detecting lost context.
virtual WebKit::WebGraphicsContext3D* Context3d() = 0;
// Returns true and provides a mailbox if a new frame is available.
// Returns false if no new data is available
// and the old mailbox is to be reused.
virtual bool PrepareTextureMailbox(
TextureMailbox* mailbox,
scoped_ptr<SingleReleaseCallback>* release_callback,
bool use_shared_memory) = 0;
protected:
virtual ~TextureLayerClient() {}
};
} // namespace cc
#endif // CC_LAYERS_TEXTURE_LAYER_CLIENT_H_
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