Add PPAPI decryptor implementation.

webkit/plugins/ppapi/ppapi_plugin_instance.h

 // Copyright (c) 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 WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
 #include "ppapi/c/dev/pp_cursor_type_dev.h"
 #include "ppapi/c/dev/ppp_printing_dev.h"
 #include "ppapi/c/dev/ppp_find_dev.h"
 #include "ppapi/c/dev/ppp_selection_dev.h"
 #include "ppapi/c/dev/ppp_text_input_dev.h"
 #include "ppapi/c/dev/ppp_zoom_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_input_event.h"
 #include "ppapi/c/ppb_gamepad.h"
 #include "ppapi/c/ppp_graphics_3d.h"
 #include "ppapi/c/ppp_input_event.h"
 #include "ppapi/c/ppp_messaging.h"
 #include "ppapi/c/ppp_mouse_lock.h"
+#include "ppapi/c/private/ppb_content_decryptor_private.h"
+#include "ppapi/c/private/ppp_content_decryptor_private.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/shared_impl/ppb_instance_shared.h"
 #include "ppapi/shared_impl/ppb_view_shared.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 #include "ui/base/ime/text_input_type.h"
@@ skipping 182 matching lines @@
   bool IsPrintScalingDisabled();
   int PrintBegin(const WebKit::WebPrintParams& print_params);
   bool PrintPage(int page_number, WebKit::WebCanvas* canvas);
   void PrintEnd();
 
   bool CanRotateView();
   void RotateView(WebKit::WebPlugin::RotationType type);
 
   void Graphics3DContextLost();
 
+  // Provides access to PPP_ContentDecryptor_Private.

[xhwang, 2012/08/15 00:27:57]

dmichael@ mentioned moving these to a delegate class, it's not urgent but we
could have a TODO here.

[xhwang, 2012/08/15 00:27:57]

dmichael@ mentioned moving these to a delegate class. It's not urgent but may
worth a TODO here.

[Tom Finegan, 2012/08/16 03:10:48]

Done.

+  typedef base::Callback<void(void*, int)> DecryptedDataCB;
+  bool GenerateKeyRequest(const std::string& key_system,
+                          const std::string& init_data);
+  bool AddKey(const std::string& session_id,
+              const std::string& key);
+  bool CancelKeyRequest(const std::string& session_id);
+  bool Decrypt(const base::StringPiece& encypted_block,

[xhwang, 2012/08/15 00:27:57]

FYI: this is okay for now, later on this will be replaced by const
scoped_refptr<media::DecoderBuffer>& encrypted_buffer.

+               const DecryptedDataCB& callback);
+  bool DecryptAndDecode(const base::StringPiece& encypted_block,
+                        const DecryptedDataCB& callback);
+
   // There are 2 implementations of the fullscreen interface
   // PPB_FlashFullscreen is used by Pepper Flash.
   // PPB_Fullscreen is intended for other applications including NaCl.
   // The two interface are mutually exclusive.
 
   // Implementation of PPB_FlashFullscreen.
 
   // Because going to fullscreen is asynchronous (but going out is not), there
   // are 3 states:
   // - normal            : fullscreen_container_ == NULL
@@ skipping 152 matching lines @@
       PP_Var relative,
       PP_URLComponents_Dev* components) OVERRIDE;
   virtual PP_Bool DocumentCanRequest(PP_Instance instance, PP_Var url) OVERRIDE;
   virtual PP_Bool DocumentCanAccessDocument(PP_Instance instance,
                                             PP_Instance target) OVERRIDE;
   virtual PP_Var GetDocumentURL(PP_Instance instance,
                                 PP_URLComponents_Dev* components) OVERRIDE;
   virtual PP_Var GetPluginInstanceURL(
       PP_Instance instance,
       PP_URLComponents_Dev* components) OVERRIDE;
+  virtual void NeedKey(PP_Instance instance,

[xhwang, 2012/08/15 00:27:57]

ditto about moving into a delegate class.

[Tom Finegan, 2012/08/16 03:10:48]

Done.

+                       PP_Var key_system,
+                       PP_Var session_id,
+                       PP_Var init_data) OVERRIDE;
+  virtual void KeyAdded(PP_Instance instance,
+                        PP_Var key_system,
+                        PP_Var session_id) OVERRIDE;
+  virtual void KeyMessage(PP_Instance instance,
+                          PP_Var key_system,
+                          PP_Var session_id,
+                          PP_Resource message,
+                          PP_Var default_url) OVERRIDE;
+  virtual void KeyError(PP_Instance instance,
+                        PP_Var key_system,
+                        PP_Var session_id,
+                        int32_t media_error,
+                        int32_t system_code) OVERRIDE;
+  virtual void DeliverBlock(PP_Instance instance,
+                            PP_Resource decrypted_block,
+                            int32_t request_id) OVERRIDE;
+  virtual void DeliverFrame(PP_Instance instance,
+                            PP_Resource decrypted_frame,
+                            int32_t request_id) OVERRIDE;
+  virtual void DeliverSamples(PP_Instance instance,
+                              PP_Resource decrypted_samples,
+                              int32_t request_id) OVERRIDE;
 
   // Reset this instance as proxied. Resets cached interfaces to point to the
   // proxy and re-sends DidCreate, DidChangeView, and HandleDocumentLoad (if
   // necessary).
   // This is for use with the NaCl proxy.
   bool ResetAsProxied();
 
  private:
   // See the static Create functions above for creating PluginInstance objects.
   // This constructor is private so that we can hide the PPP_Instance_Combined
   // details while still having 1 constructor to maintain for member
   // initialization.
   PluginInstance(PluginDelegate* delegate,
                  PluginModule* module,
                  ::ppapi::PPP_Instance_Combined* instance_interface);
 
+  bool LoadContentDecryptorInterface();
   bool LoadFindInterface();
   bool LoadInputEventInterface();
   bool LoadMessagingInterface();
   bool LoadMouseLockInterface();
   bool LoadPdfInterface();
   bool LoadPrintInterface();
   bool LoadPrivateInterface();
   bool LoadSelectionInterface();
   bool LoadTextInputInterface();
   bool LoadZoomInterface();
@@ skipping 111 matching lines @@
   bool has_webkit_focus_;
   bool has_content_area_focus_;
 
   // The id of the current find operation, or -1 if none is in process.
   int find_identifier_;
 
   // Helper object that creates resources.
   scoped_ptr< ::ppapi::thunk::ResourceCreationAPI> resource_creation_;
 
   // The plugin-provided interfaces.
+  const PPP_ContentDecryptor_Private* plugin_decryption_interface_;
   const PPP_Find_Dev* plugin_find_interface_;
   const PPP_InputEvent* plugin_input_event_interface_;
   const PPP_Messaging* plugin_messaging_interface_;
   const PPP_MouseLock* plugin_mouse_lock_interface_;
   const PPP_Pdf* plugin_pdf_interface_;
   const PPP_Instance_Private* plugin_private_interface_;
   const PPP_Selection_Dev* plugin_selection_interface_;
   const PPP_TextInput_Dev* plugin_textinput_interface_;
   const PPP_Zoom_Dev* plugin_zoom_interface_;
 
@@ skipping 112 matching lines @@
   // the pointer so we can re-send it later if we are reset to talk to NaCl.
   scoped_refptr<PPB_URLLoader_Impl> document_loader_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_