cc/layers/texture_layer_client.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_LAYERS_TEXTURE_LAYER_CLIENT_H_
   6 #define CC_LAYERS_TEXTURE_LAYER_CLIENT_H_
   7
   8 #include "cc/resources/single_release_callback.h"
   9
  10 namespace cc {
  11 class ResourceUpdateQueue;
  12 class TextureMailbox;
  13
  14 class TextureLayerClient {
  15  public:
  16   // Called to prepare this layer's texture for compositing.
  17   // Returns the texture ID to be used for compositing.
  18   virtual unsigned PrepareTexture() = 0;
  19
  20   // Returns true and provides a mailbox if a new frame is available.
  21   // Returns false if no new data is available
  22   // and the old mailbox is to be reused.
  23   virtual bool PrepareTextureMailbox(
  24       TextureMailbox* mailbox,
  25       scoped_ptr<SingleReleaseCallback>* release_callback,
  26       bool use_shared_memory) = 0;
  27
  28  protected:
  29   virtual ~TextureLayerClient() {}
  30 };
  31
  32 }  // namespace cc
  33
  34 #endif  // CC_LAYERS_TEXTURE_LAYER_CLIENT_H_