Bug 736073 - Implement power state support for Flash on Android r=blassey

dom/plugins/base/android/ANPSystem.cpp

@@ -63,7 +63,9 @@ jclass anp_system_loadJavaClass(NPP instance, const char* className)
 
 void anp_system_setPowerState(NPP instance, ANPPowerState powerState)
 {
-  NOT_IMPLEMENTED();
+  nsNPAPIPluginInstance* pinst = static_cast<nsNPAPIPluginInstance*>(instance->ndata);
+
+  pinst->SetWakeLock(powerState == kScreenOn_ANPPowerState);
 }
 
 void InitSystemInterface(ANPSystemInterfaceV0 *i) {

dom/plugins/base/nsNPAPIPluginInstance.cpp

@@ -4,7 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifdef MOZ_WIDGET_ANDROID
-// For ScreenOrientation.h
+// For ScreenOrientation.h and Hal.h
 #include "base/basictypes.h"
 #endif
 
@@ -41,6 +41,7 @@
 #include "mozilla/CondVar.h"
 #include "AndroidBridge.h"
 #include "mozilla/dom/ScreenOrientation.h"
+#include "mozilla/Hal.h"
 
 class PluginEventRunnable : public nsRunnable
 {
@@ -81,6 +82,7 @@ nsNPAPIPluginInstance::nsNPAPIPluginInstance()
     mANPDrawingModel(0),
     mOnScreen(true),
     mFullScreenOrientation(dom::eScreenOrientation_LandscapePrimary),
+    mWakeLocked(false),
 #endif
     mRunning(NOT_STARTED),
     mWindowless(false),
@@ -115,6 +117,10 @@ nsNPAPIPluginInstance::~nsNPAPIPluginInstance()
     PR_Free((void *)mMIMEType);
     mMIMEType = nsnull;
   }
+
+#if MOZ_WIDGET_ANDROID
+  SetWakeLock(false);
+#endif
 }
 
 void
@@ -788,6 +794,17 @@ void nsNPAPIPluginInstance::PopPostedEvent(PluginEventRunnable* r)
   mPostedEvents.RemoveElement(r);
 }
 
+void nsNPAPIPluginInstance::SetWakeLock(bool aLocked)
+{
+  if (aLocked == mWakeLocked)
+    return;
+
+  mWakeLocked = aLocked;
+  hal::ModifyWakeLock(NS_LITERAL_STRING("nsNPAPIPluginInstance"),
+                      mWakeLocked ? hal::WAKE_LOCK_ADD_ONE : hal::WAKE_LOCK_REMOVE_ONE,
+                      hal::WAKE_LOCK_NO_CHANGE);
+}
+
 #endif
 
 nsresult nsNPAPIPluginInstance::GetDrawingModel(PRInt32* aModel)

dom/plugins/base/nsNPAPIPluginInstance.h

@@ -140,6 +140,8 @@ public:
   // difficult to include that here
   PRUint32 FullScreenOrientation() { return mFullScreenOrientation; }
   void SetFullScreenOrientation(PRUint32 orientation) { mFullScreenOrientation = orientation; }
+
+  void SetWakeLock(bool aLock);
 #endif
 
   nsresult NewStreamListener(const char* aURL, void* notifyData,
@@ -226,6 +228,7 @@ protected:
   void PopPostedEvent(PluginEventRunnable* r);
 
   PRUint32 mFullScreenOrientation;
+  bool mWakeLocked;
 #endif
 
   enum {