Add PPAPI tests for VideoSource and VideoDestination resources.

content/renderer/pepper/pepper_video_source_host.h

 // Copyright (c) 2013 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 CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_SOURCE_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_SOURCE_HOST_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 "content/common/content_export.h"
 #include "content/renderer/media/video_source_handler.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/host/host_message_context.h"
 #include "ppapi/host/resource_host.h"
 
+struct PP_ImageDataDesc;
+
 namespace content {
 
 class RendererPpapiHost;
 
-class CONTENT_EXPORT PepperVideoSourceHost
-    : public ppapi::host::ResourceHost,
-      public content::FrameReaderInterface {
+class CONTENT_EXPORT PepperVideoSourceHost : public ppapi::host::ResourceHost {
  public:
   PepperVideoSourceHost(RendererPpapiHost* host,
                         PP_Instance instance,
                         PP_Resource resource);
 
   virtual ~PepperVideoSourceHost();
 
-  // content::FrameReaderInterface implementation.
-  virtual bool GotFrame(cricket::VideoFrame* frame) OVERRIDE;
-
   virtual int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) OVERRIDE;
 
  private:
+  // This helper object receives frames on a video worker thread and passes
+  // them on to us.
+  class FrameReceiver : public content::FrameReaderInterface,
+                        public base::RefCountedThreadSafe<FrameReceiver> {
+   public:
+    explicit FrameReceiver(const base::WeakPtr<PepperVideoSourceHost>& host);
+
+    // content::FrameReaderInterface implementation.
+    virtual bool GotFrame(cricket::VideoFrame* frame) OVERRIDE;
+
+    void OnGotFrame(scoped_ptr<cricket::VideoFrame> frame);
+
+   private:
+    friend class base::RefCountedThreadSafe<FrameReceiver>;
+    virtual ~FrameReceiver();
+
+    base::WeakPtr<PepperVideoSourceHost> host_;
+    scoped_refptr<base::MessageLoopProxy> main_message_loop_proxy_;
+  };
+
+  friend class FrameReceiver;
+
   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
                         const std::string& stream_url);
   int32_t OnHostMsgGetFrame(ppapi::host::HostMessageContext* context);
   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
 
-  void OnGotFrame(scoped_ptr<cricket::VideoFrame> frame);
+  // Sends the reply to a GetFrame message from the plugin. A reply is always
+  // sent and last_frame_, reply_context_, and get_frame_pending_ are all reset.
+  void SendGetFrameReply();
+  // Sends the reply to a GetFrame message from the plugin in case of an error.
+  void SendGetFrameErrorReply(int32_t error);
 
-  int32_t ConvertFrame(ppapi::HostResource* image_data_resource,
-                       PP_TimeTicks* timestamp);
-  void SendFrame(const ppapi::HostResource& image_data_resource,
-                 PP_TimeTicks timestamp,
-                 int32_t result);
   void Close();
 
   RendererPpapiHost* renderer_ppapi_host_;
 
   base::WeakPtrFactory<PepperVideoSourceHost> weak_factory_;
 
   ppapi::host::ReplyMessageContext reply_context_;
-  scoped_refptr<base::MessageLoopProxy> main_message_loop_proxy_;
 
   scoped_ptr<content::VideoSourceHandler> source_handler_;
+  scoped_refptr<FrameReceiver> frame_receiver_;
   std::string stream_url_;
   scoped_ptr<cricket::VideoFrame> last_frame_;
   bool get_frame_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperVideoSourceHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_SOURCE_HOST_H_