ppapi/proxy/ppb_image_data_proxy.h

   1 // Copyright (c) 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 PPAPI_PPB_IMAGE_DATA_PROXY_H_
   6 #define PPAPI_PPB_IMAGE_DATA_PROXY_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "build/build_config.h"
  10 #include "ppapi/c/pp_bool.h"
  11 #include "ppapi/c/pp_completion_callback.h"
  12 #include "ppapi/c/pp_instance.h"
  13 #include "ppapi/c/pp_module.h"
  14 #include "ppapi/c/pp_resource.h"
  15 #include "ppapi/c/pp_size.h"
  16 #include "ppapi/c/pp_var.h"
  17 #include "ppapi/c/ppb_image_data.h"
  18 #include "ppapi/proxy/interface_proxy.h"
  19 #include "ppapi/proxy/serialized_structs.h"
  20 #include "ppapi/shared_impl/ppb_image_data_shared.h"
  21 #include "ppapi/shared_impl/resource.h"
  22 #include "ppapi/thunk/ppb_image_data_api.h"
  23
  24 class TransportDIB;
  25
  26 namespace ppapi {
  27 namespace proxy {
  28
  29 // The proxied image data resource. Unlike most resources, this needs to be
  30 // public in the header since a number of other resources need to access it.
  31 class ImageData : public ppapi::Resource,
  32                   public ppapi::thunk::PPB_ImageData_API,
  33                   public ppapi::PPB_ImageData_Shared {
  34  public:
  35   ImageData(const ppapi::HostResource& resource,
  36             const PP_ImageDataDesc& desc,
  37             ImageHandle handle);
  38   virtual ~ImageData();
  39
  40   // Resource overrides.
  41   virtual ppapi::thunk::PPB_ImageData_API* AsPPB_ImageData_API() OVERRIDE;
  42
  43   // PPB_ImageData API.
  44   virtual PP_Bool Describe(PP_ImageDataDesc* desc) OVERRIDE;
  45   virtual void* Map() OVERRIDE;
  46   virtual void Unmap() OVERRIDE;
  47   virtual int32_t GetSharedMemory(int* handle, uint32_t* byte_count) OVERRIDE;
  48   virtual skia::PlatformCanvas* GetPlatformCanvas() OVERRIDE;
  49
  50   const PP_ImageDataDesc& desc() const { return desc_; }
  51
  52   static ImageHandle NullHandle();
  53   static ImageHandle HandleFromInt(int32_t i);
  54
  55  private:
  56   PP_ImageDataDesc desc_;
  57
  58 #if defined(OS_NACL)
  59   // TODO(brettw) implement this (see .cc file).
  60 #else
  61   scoped_ptr<TransportDIB> transport_dib_;
  62
  63   // Null when the image isn't mapped.
  64   scoped_ptr<skia::PlatformCanvas> mapped_canvas_;
  65 #endif
  66
  67   DISALLOW_COPY_AND_ASSIGN(ImageData);
  68 };
  69
  70 class PPB_ImageData_Proxy : public InterfaceProxy {
  71  public:
  72   PPB_ImageData_Proxy(Dispatcher* dispatcher);
  73   virtual ~PPB_ImageData_Proxy();
  74
  75   static PP_Resource CreateProxyResource(PP_Instance instance,
  76                                          PP_ImageDataFormat format,
  77                                          const PP_Size& size,
  78                                          PP_Bool init_to_zero);
  79
  80   // InterfaceProxy implementation.
  81   virtual bool OnMessageReceived(const IPC::Message& msg);
  82
  83   static const ApiID kApiID = API_ID_PPB_IMAGE_DATA;
  84
  85  private:
  86   // Message handler.
  87   void OnHostMsgCreate(PP_Instance instance,
  88                        int32_t format,
  89                        const PP_Size& size,
  90                        PP_Bool init_to_zero,
  91                        HostResource* result,
  92                        std::string* image_data_desc,
  93                        ImageHandle* result_image_handle);
  94
  95   DISALLOW_COPY_AND_ASSIGN(PPB_ImageData_Proxy);
  96 };
  97
  98 }  // namespace proxy
  99 }  // namespace ppapi
 100
 101 #endif  // PPAPI_PPB_IMAGE_DATA_PROXY_H_