Expose flash playback status and volume control to content renderer

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index f327bc6756e8596333fd0b7248a37e5c5dbcd6c5..2585b04045abf77b138efd2ef6a8258a509927b1 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -116,6 +116,7 @@
 #include "content/renderer/navigation_state_impl.h"
 #include "content/renderer/notification_permission_dispatcher.h"
 #include "content/renderer/pepper/plugin_instance_throttler_impl.h"
+#include "content/renderer/pepper/ppb_audio_impl.h"
 #include "content/renderer/presentation/presentation_dispatcher.h"
 #include "content/renderer/push_messaging/push_messaging_dispatcher.h"
 #include "content/renderer/render_frame_proxy.h"
@@ -1478,6 +1479,9 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_ContextMenuClosed, OnContextMenuClosed)
     IPC_MESSAGE_HANDLER(FrameMsg_CustomContextMenuAction,
                         OnCustomContextMenuAction)
+#if defined(ENABLE_PLUGINS)
+    IPC_MESSAGE_HANDLER(FrameMsg_SetPepperVolume, OnSetPepperVolume)
+#endif  //defined(ENABLE_PLUGINS)
     IPC_MESSAGE_HANDLER(InputMsg_Undo, OnUndo)
     IPC_MESSAGE_HANDLER(InputMsg_Redo, OnRedo)
     IPC_MESSAGE_HANDLER(InputMsg_Cut, OnCut)
@@ -6188,7 +6192,8 @@ void RenderFrameImpl::PepperInstanceCreated(
     PepperPluginInstanceImpl* instance) {
   active_pepper_instances_.insert(instance);
 
-  Send(new FrameHostMsg_PepperInstanceCreated(routing_id_));
+  Send(new FrameHostMsg_PepperInstanceCreated(routing_id_,
+                                              instance->pp_instance()));
 }
 
 void RenderFrameImpl::PepperInstanceDeleted(
@@ -6203,7 +6208,8 @@ void RenderFrameImpl::PepperInstanceDeleted(
   RenderFrameImpl* const render_frame = instance->render_frame();
   if (render_frame)
     render_frame->Send(
-        new FrameHostMsg_PepperInstanceDeleted(render_frame->GetRoutingID()));
+        new FrameHostMsg_PepperInstanceDeleted(render_frame->GetRoutingID(),
+                                               instance->pp_instance()));
 }
 
 void RenderFrameImpl::PepperFocusChanged(PepperPluginInstanceImpl* instance,
@@ -6218,6 +6224,40 @@ void RenderFrameImpl::PepperFocusChanged(PepperPluginInstanceImpl* instance,
   GetRenderWidget()->UpdateSelectionBounds();
 }
 
+void RenderFrameImpl::PepperStartsPlayback(
+    PepperPluginInstanceImpl* instance, PPB_Audio_Impl* ppb_audio) {
+  // Only send start signal for the first PPB_Audio_Impl starts playback.
+  if (pepper_audios_map_[instance->pp_instance()].empty()) {
+    RenderFrameImpl* const render_frame = instance->render_frame();
+    if (render_frame)
+      render_frame->Send(
+          new FrameHostMsg_PepperStartsPlayback(render_frame->GetRoutingID(),
+                                                instance->pp_instance()));
+  }
+  // TODO(zqzhang): it is unsure that whether a pepper instance can
+  // have multiple audio instances. Currently let the pepper instance
+  // delegates the SetVolume() method of all it's audio instances.
+  pepper_audios_map_[instance->pp_instance()].insert(ppb_audio);
+}
+
+void RenderFrameImpl::PepperStopsPlayback(
+    PepperPluginInstanceImpl* instance, PPB_Audio_Impl* ppb_audio) {
+  pepper_audios_map_[instance->pp_instance()].erase(ppb_audio);
+
+  RenderFrameImpl* const render_frame = instance->render_frame();
+  // Only send stop signal for the last PPB_Audio_Impl stops playback.
+  if (render_frame && pepper_audios_map_[instance->pp_instance()].empty())
+    render_frame->Send(
+        new FrameHostMsg_PepperStopsPlayback(render_frame->GetRoutingID(),
+                                             instance->pp_instance()));
+}
+
+void RenderFrameImpl::OnSetPepperVolume(int32_t pp_instance, double volume) {
+  if (pepper_audios_map_.count(pp_instance) == 0) return;
+  for (auto ppb_audio : pepper_audios_map_[pp_instance]) {
+    ppb_audio->SetVolume(volume);
+  }
+}
 #endif  // ENABLE_PLUGINS
 
 void RenderFrameImpl::RenderWidgetSetFocus(bool enable) {