[PPAPI] Compositor API implementation

ppapi/proxy/compositor_resource.h

 // Copyright 2014 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 PPAPI_PROXY_COMPOSITOR_RESOURCE_H_
 #define PPAPI_PROXY_COMPOSITOR_RESOURCE_H_
 
+#include <map>
+
+#include "ppapi/proxy/compositor_layer_resource.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/thunk/ppb_compositor_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 class PPAPI_PROXY_EXPORT CompositorResource
     : public PluginResource,
       public thunk::PPB_Compositor_API {
  public:
   CompositorResource(Connection connection,
                      PP_Instance instance);
 
+  bool IsInProgress() const {
+    return TrackedCallback::IsPending(commit_callback_);
+  }
+
+  int32_t GenerateResourceId() const {
+    return ++last_resource_id_;
+  }
+
  private:
   virtual ~CompositorResource();
 
   // Resource overrides:
   virtual thunk::PPB_Compositor_API* AsPPB_Compositor_API() OVERRIDE;
 
+  // PluginResource overrides:
+  virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
+                               const IPC::Message& msg) OVERRIDE;
+
   // thunk::PPB_Compositor_API overrides:
   virtual PP_Resource AddLayer() OVERRIDE;
   virtual int32_t CommitLayers(
-      const scoped_refptr<ppapi::TrackedCallback>& callback) OVERRIDE;
+      const scoped_refptr<TrackedCallback>& callback) OVERRIDE;
   virtual int32_t ResetLayers() OVERRIDE;
 
+  // IPC msg handlers:
+  void OnPluginMsgCommitLayersReply(const ResourceMessageReplyParams& params);
+  void OnPluginMsgReleaseResource(
+      const ResourceMessageReplyParams& params,
+      int32_t id,
+      uint32_t sync_point,
+      bool is_lost);
+
+  // Callback for CommitLayers().
+  scoped_refptr<TrackedCallback> commit_callback_;
+
+  // True if layers_ has been reset by ResetLayers().
+  bool layer_reset_;
+
+  // Layer stack.
+  typedef std::vector<scoped_refptr<CompositorLayerResource> > LayerList;
+  LayerList layers_;
+
+  // Release callback map for texture and image.
+  typedef CompositorLayerResource::ReleaseCallback ReleaseCallback;
+  typedef std::map<int32_t, ReleaseCallback> ReleaseCallbackMap;
+  ReleaseCallbackMap release_callback_map_;
+
+  // The last resource id for texture or image.
+  mutable int32_t last_resource_id_;

[raymes, 2014/06/04 01:11:39]

Why is this mutable?

[Peng, 2014/06/05 00:50:38]

In CompositorLayerResource(CLR), we use a const CompositorResource pointer
(Because CLR does not own CompositorResource, using a const pointer makes it
more clear). And the CLR will call GenerateResourceId(). So GenerateResourceId()
should be a const method. To achieve that, we need mark last_resource_id_
mutable. WDYT?

+
   DISALLOW_COPY_AND_ASSIGN(CompositorResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_COMPOSITOR_RESOURCE_H_