Bug 736939 - AudioManager implementation. r=cjones, a=b2g-only

dom/system/gonk/AudioManager.cpp

@@ -35,14 +35,66 @@
  *
  * ***** END LICENSE BLOCK ***** */
 
+#include <android/log.h> 
+
+#include "mozilla/Hal.h"
 #include "AudioManager.h"
 #include "gonk/AudioSystem.h"
 
 using namespace mozilla::dom::gonk;
 using namespace android;
+using namespace mozilla::hal;
+using namespace mozilla;
+
+#define LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "AudioManager" , ## args) 
 
 NS_IMPL_ISUPPORTS1(AudioManager, nsIAudioManager)
 
+static AudioSystem::audio_devices
+GetRoutingMode(int aType) {
+  if (aType == nsIAudioManager::FORCE_SPEAKER) {
+    return AudioSystem::DEVICE_OUT_SPEAKER;
+  } else if (aType == nsIAudioManager::FORCE_HEADPHONES) {
+    return AudioSystem::DEVICE_OUT_WIRED_HEADSET;
+  } else if (aType == nsIAudioManager::FORCE_BT_SCO) {
+    return AudioSystem::DEVICE_OUT_BLUETOOTH_SCO;
+  } else if (aType == nsIAudioManager::FORCE_BT_A2DP) {
+    return AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
+  } else {
+    return AudioSystem::DEVICE_IN_DEFAULT;
+  }
+}
+
+static void
+InternalSetAudioRoutes(SwitchState aState)
+{
+  if (aState == SWITCH_STATE_ON) {
+    AudioManager::SetAudioRoute(nsIAudioManager::FORCE_HEADPHONES);
+  } else if (aState == SWITCH_STATE_OFF) {
+    AudioManager::SetAudioRoute(nsIAudioManager::FORCE_SPEAKER);
+  }
+}
+
+class HeadphoneSwitchObserver : public SwitchObserver
+{
+public:
+  void Notify(const SwitchEvent& aEvent) {
+    InternalSetAudioRoutes(aEvent.status());
+  }
+};
+
+AudioManager::AudioManager() : mPhoneState(PHONE_STATE_CURRENT),
+                 mObserver(new HeadphoneSwitchObserver())
+{
+  RegisterSwitchObserver(SWITCH_HEADPHONES, mObserver);
+  
+  InternalSetAudioRoutes(GetCurrentSwitchState(SWITCH_HEADPHONES));
+}
+
+AudioManager::~AudioManager() {
+  UnregisterSwitchObserver(SWITCH_HEADPHONES, mObserver);
+}
+
 NS_IMETHODIMP
 AudioManager::GetMicrophoneMuted(bool* aMicrophoneMuted)
 {
@@ -161,3 +213,12 @@ AudioManager::GetForceForUse(PRInt32 aUsage, PRInt32* aForce) {
   }
   return NS_OK;
 }
+
+void
+AudioManager::SetAudioRoute(int aRoutes) {
+  audio_io_handle_t handle = AudioSystem::getOutput(AudioSystem::SYSTEM);
+  
+  String8 cmd;
+  cmd.appendFormat("%s=%d", AudioParameter::keyRouting, GetRoutingMode(aRoutes));
+  AudioSystem::setParameters(handle, cmd);
+}

dom/system/gonk/AudioManager.h

@@ -38,15 +38,22 @@
 #ifndef mozilla_dom_system_b2g_audiomanager_h__
 #define mozilla_dom_system_b2g_audiomanager_h__
 
+#include "mozilla/Observer.h"
+#include "nsAutoPtr.h"
 #include "nsIAudioManager.h"
 
-
 // {b2b51423-502d-4d77-89b3-7786b562b084}
 #define NS_AUDIOMANAGER_CID {0x94f6fd70, 0x7615, 0x4af9, \
       {0x89, 0x10, 0xf9, 0x3c, 0x55, 0xe6, 0x62, 0xec}}
 #define NS_AUDIOMANAGER_CONTRACTID "@mozilla.org/telephony/audiomanager;1"
 
+
 namespace mozilla {
+namespace hal {
+class SwitchEvent;
+typedef Observer<SwitchEvent> SwitchObserver;
+} // namespace hal
+
 namespace dom {
 namespace gonk {
 
@@ -56,16 +63,18 @@ public:
   NS_DECL_ISUPPORTS
   NS_DECL_NSIAUDIOMANAGER
 
-  AudioManager() : mPhoneState(PHONE_STATE_CURRENT)
-  {
-  }
+  AudioManager();
+  ~AudioManager();
 
+  static void SetAudioRoute(int aRoutes);
 protected:
   PRInt32 mPhoneState;
+
+private:
+  nsAutoPtr<mozilla::hal::SwitchObserver> mObserver;
 };
 
-
-} /* namespace telephony */
+} /* namespace gonk */
 } /* namespace dom */
 } /* namespace mozilla */
 

dom/system/gonk/Makefile.in

@@ -67,3 +67,4 @@ XPCSHELL_TESTS = tests
 endif
 
 include $(topsrcdir)/config/rules.mk
+include $(topsrcdir)/ipc/chromium/chromium-config.mk