Add PPAPI decryptor interfaces.

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/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_content_decryption_module_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"
@@ skipping 200 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();
 
+  bool AddKey(PP_Resource key);

[ddorwin, 2012/06/06 22:16:20]

I think these parameters should be standard Chromium/WebKit types, not PP_*. We
should try to keep the PPAPI stuff hidden behind these functions.

It's probably TBD what that means for the callback and we may need to see how
the caller evolves.

[Tom Finegan, 2012/06/07 00:50:50]

I assumed PP_Resource was fine-- there are PluginInstance methods using it
already. Is there a buffer type that should be used instead?

[ddorwin, 2012/06/07 18:51:26]

Those are all for the PPB_Instance implementation. They aren't the code that
src/webkit/ calls. Specifically, we won't want to include src/ppapi/ code in
src/webkit/media/.
Not sure. The frame buffers come from src/media/, but I don't think those types
are known in src/webkit/media/ and certainly not in src/webkit/plugins/. I think
src/media is going to use std::string to hold buffers. We may need to revisit
for decrypted_frame, but that's probably a good place to start for now.

+  bool Decrypt(PP_Resource encypted_block,
+               PP_Resource decrypted_block,
+               PP_CompletionCallback callback);
+  bool DecryptAndDecode(PP_Resource encypted_block,
+                        PP_Resource decrypted_frame,
+                        PP_CompletionCallback 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 154 matching lines @@
 
  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 LoadContentDecryptionModuleInterface();
   bool LoadFindInterface();
   bool LoadInputEventInterface();
   bool LoadMessagingInterface();
   bool LoadMouseLockInterface();
   bool LoadPdfInterface();
   bool LoadPrintInterface();
   bool LoadPrivateInterface();
   bool LoadSelectionInterface();
   bool LoadTextInputInterface();
   bool LoadZoomInterface();
@@ skipping 102 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.
   ResourceCreationImpl resource_creation_;
 
   // The plugin-provided interfaces.
+  const PPP_ContentDecryptionModule_Dev* plugin_decryption_interface_;
   const PPP_Find_Dev* plugin_find_interface_;
   const PPP_Messaging* plugin_messaging_interface_;
   const PPP_MouseLock* plugin_mouse_lock_interface_;
   const PPP_InputEvent* plugin_input_event_interface_;
   const PPP_Instance_Private* plugin_private_interface_;
   const PPP_Pdf* plugin_pdf_interface_;
   const PPP_Selection_Dev* plugin_selection_interface_;
   const PPP_TextInput_Dev* plugin_textinput_interface_;
   const PPP_Zoom_Dev* plugin_zoom_interface_;
 
@@ skipping 103 matching lines @@
   // The Flash proxy is associated with the instance.
   PPB_Flash_Impl flash_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_