content/renderer/pepper/pepper_compositor_host.h

   1 // Copyright 2014 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 CONTENT_RENDERER_PEPPER_PEPPER_COMPOSITOR_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_COMPOSITOR_HOST_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "ppapi/host/host_message_context.h"
  12 #include "ppapi/host/resource_host.h"
  13 #include "ppapi/shared_impl/compositor_layer_data.h"
  14
  15 namespace base {
  16 class SharedMemory;
  17 }  // namespace
  18
  19 namespace cc {
  20 class Layer;
  21 class SharedBitmap;
  22 }  // namespace cc
  23
  24 namespace content {
  25
  26 class PepperPluginInstanceImpl;
  27 class RendererPpapiHost;
  28
  29 class PepperCompositorHost : public ppapi::host::ResourceHost {
  30  public:
  31   PepperCompositorHost(RendererPpapiHost* host,
  32                        PP_Instance instance,
  33                        PP_Resource resource);
  34   // Associates this device with the given plugin instance. You can pass NULL
  35   // to clear the existing device. Returns true on success. In this case, a
  36   // repaint of the page will also be scheduled. Failure means that the device
  37   // is already bound to a different instance, and nothing will happen.
  38   bool BindToInstance(PepperPluginInstanceImpl* new_instance);
  39
  40   const scoped_refptr<cc::Layer> layer() { return layer_; };
  41
  42   void ViewInitiatedPaint();
  43
  44  private:
  45   ~PepperCompositorHost() override;
  46
  47   void ImageReleased(int32_t id,
  48                      scoped_ptr<base::SharedMemory> shared_memory,
  49                      scoped_ptr<cc::SharedBitmap> bitmap,
  50                      uint32_t sync_point,
  51                      bool is_lost);
  52   void ResourceReleased(int32_t id,
  53                         uint32_t sync_point,
  54                         bool is_lost);
  55   void SendCommitLayersReplyIfNecessary();
  56   void UpdateLayer(const scoped_refptr<cc::Layer>& layer,
  57                    const ppapi::CompositorLayerData* old_layer,
  58                    const ppapi::CompositorLayerData* new_layer,
  59                    scoped_ptr<base::SharedMemory> image_shm);
  60
  61   // ResourceMessageHandler overrides:
  62   int32_t OnResourceMessageReceived(
  63       const IPC::Message& msg,
  64       ppapi::host::HostMessageContext* context) override;
  65
  66   // ppapi::host::ResourceHost overrides:
  67   bool IsCompositorHost() override;
  68
  69   // Message handlers:
  70   int32_t OnHostMsgCommitLayers(
  71       ppapi::host::HostMessageContext* context,
  72       const std::vector<ppapi::CompositorLayerData>& layers,
  73       bool reset);
  74
  75   // Non-owning pointer to the plugin instance this context is currently bound
  76   // to, if any. If the context is currently unbound, this will be NULL.
  77   PepperPluginInstanceImpl* bound_instance_;
  78
  79   // The toplevel cc::Layer. It is the parent of other cc::Layers.
  80   scoped_refptr<cc::Layer> layer_;
  81
  82   // A list of layers. It is used for updating layers' properties in
  83   // subsequent CommitLayers() calls.
  84   struct LayerData {
  85     LayerData(const scoped_refptr<cc::Layer>& cc,
  86               const ppapi::CompositorLayerData& pp);
  87     ~LayerData();
  88
  89     scoped_refptr<cc::Layer> cc_layer;
  90     ppapi::CompositorLayerData pp_layer;
  91   };
  92   std::vector<LayerData> layers_;
  93
  94   ppapi::host::ReplyMessageContext commit_layers_reply_context_;
  95
  96   base::WeakPtrFactory<PepperCompositorHost> weak_factory_;
  97
  98   DISALLOW_COPY_AND_ASSIGN(PepperCompositorHost);
  99 };
 100
 101 }  // namespace content
 102
 103 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_COMPOSITOR_HOST_H_