Add PepperViewProxy to protect PepperView and ChromotingInstance on shutdown

remoting/client/plugin/pepper_view_proxy.cc

+// Copyright (c) 2011 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.
+
+#include "remoting/client/plugin/pepper_view_proxy.h"
+
+#include "base/message_loop.h"
+#include "remoting/base/tracer.h"
+#include "remoting/client/client_context.h"
+#include "remoting/client/plugin/chromoting_instance.h"
+#include "remoting/client/plugin/pepper_util.h"
+
+namespace remoting {
+
+PepperViewProxy::PepperViewProxy(ChromotingInstance* instance, PepperView* view)
+  : instance_(instance),
+    view_(view) {
+}
+
+PepperViewProxy::~PepperViewProxy() {
+}
+
+bool PepperViewProxy::Initialize() {
+  // This method needs a return value so we can't post a task and process on
+  // another thread so just return true since PepperView doesn't do anything
+  // either.
+  return true;
+}
+
+void PepperViewProxy::TearDown() {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(NewTracedMethod(this, &PepperViewProxy::TearDown));
+    return;
+  }
+
+  if (view_)
+    view_->TearDown();
+}
+
+void PepperViewProxy::Paint() {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(NewTracedMethod(this, &PepperViewProxy::Paint));
+    return;
+  }
+
+  if (view_)
+    view_->Paint();
+}
+
+void PepperViewProxy::SetSolidFill(uint32 color) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewTracedMethod(this, &PepperViewProxy::SetSolidFill, color));
+    return;
+  }
+
+  if (view_)
+    view_->SetSolidFill(color);
+}
+
+void PepperViewProxy::UnsetSolidFill() {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewTracedMethod(this, &PepperViewProxy::UnsetSolidFill));
+    return;
+  }
+
+  if (view_)
+    view_->UnsetSolidFill();
+}
+
+void PepperViewProxy::SetConnectionState(ConnectionState state) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewRunnableMethod(this, &PepperViewProxy::SetConnectionState, state));
+    return;
+  }
+
+  if (view_)
+    view_->SetConnectionState(state);
+}
+
+void PepperViewProxy::SetViewport(int x, int y, int width, int height) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(NewTracedMethod(this, &PepperViewProxy::SetViewport,
+                                          x, y, width, height));
+    return;
+  }
+
+  if (view_)
+    view_->SetViewport(x, y, width, height);
+}
+
+void PepperViewProxy::AllocateFrame(
+    media::VideoFrame::Format format,
+    size_t width,
+    size_t height,
+    base::TimeDelta timestamp,
+    base::TimeDelta duration,
+    scoped_refptr<media::VideoFrame>* frame_out,
+    Task* done) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewTracedMethod(this, &PepperViewProxy::AllocateFrame, format, width,
+                        height, timestamp, duration, frame_out, done));
+    return;
+  }
+
+  if (view_) {
+    view_->AllocateFrame(format, width, height, timestamp, duration, frame_out,
+                         done);
+  }
+}
+
+void PepperViewProxy::ReleaseFrame(media::VideoFrame* frame) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewTracedMethod(this, &PepperViewProxy::ReleaseFrame,
+                        make_scoped_refptr(frame)));
+    return;
+  }
+
+  if (view_)
+    view_->ReleaseFrame(frame);
+}
+
+void PepperViewProxy::OnPartialFrameOutput(media::VideoFrame* frame,
+                                           UpdatedRects* rects,
+                                           Task* done) {
+  if (instance_ && !instance_->CurrentlyOnPluginThread()) {
+    RunTaskOnPluginThread(
+        NewTracedMethod(this, &PepperViewProxy::OnPartialFrameOutput,
+                        make_scoped_refptr(frame), rects, done));
+    return;
+  }
+
+  if (view_)
+    view_->OnPartialFrameOutput(frame, rects, done);
+}
+
+void PepperViewProxy::Detach() {
+  DCHECK(instance_->CurrentlyOnPluginThread());
+  instance_ = NULL;
+  view_ = NULL;
+}
+
+}  // namespace remoting