Remove unused code for managing physical audio devices.

This was only used in B2G/Gonk and can go.

7 files changed, 0 insertions, 273 deletions

diff --git a/hal/Hal.cpp b/hal/Hal.cpp
index 8ac9e68470..16201a2d8d 100644
--- a/hal/Hal.cpp
+++ b/hal/Hal.cpp
@@ -754,96 +754,6 @@ UnlockScreenOrientation()
   PROXY_IF_SANDBOXED(UnlockScreenOrientation());
 }
 
-void
-EnableSwitchNotifications(SwitchDevice aDevice) {
-  AssertMainThread();
-  PROXY_IF_SANDBOXED(EnableSwitchNotifications(aDevice));
-}
-
-void
-DisableSwitchNotifications(SwitchDevice aDevice) {
-  AssertMainThread();
-  PROXY_IF_SANDBOXED(DisableSwitchNotifications(aDevice));
-}
-
-SwitchState GetCurrentSwitchState(SwitchDevice aDevice)
-{
-  AssertMainThread();
-  RETURN_PROXY_IF_SANDBOXED(GetCurrentSwitchState(aDevice), SWITCH_STATE_UNKNOWN);
-}
-
-void NotifySwitchStateFromInputDevice(SwitchDevice aDevice, SwitchState aState)
-{
-  AssertMainThread();
-  PROXY_IF_SANDBOXED(NotifySwitchStateFromInputDevice(aDevice, aState));
-}
-
-typedef mozilla::ObserverList<SwitchEvent> SwitchObserverList;
-
-static SwitchObserverList *sSwitchObserverLists = nullptr;
-
-static SwitchObserverList&
-GetSwitchObserverList(SwitchDevice aDevice) {
-  MOZ_ASSERT(0 <= aDevice && aDevice < NUM_SWITCH_DEVICE);
-  if (sSwitchObserverLists == nullptr) {
-    sSwitchObserverLists = new SwitchObserverList[NUM_SWITCH_DEVICE];
-  }
-  return sSwitchObserverLists[aDevice];
-}
-
-static void
-ReleaseObserversIfNeeded() {
-  for (int i = 0; i < NUM_SWITCH_DEVICE; i++) {
-    if (sSwitchObserverLists[i].Length() != 0)
-      return;
-  }
-
-  //The length of every list is 0, no observer in the list.
-  delete [] sSwitchObserverLists;
-  sSwitchObserverLists = nullptr;
-}
-
-void
-RegisterSwitchObserver(SwitchDevice aDevice, SwitchObserver *aObserver)
-{
-  AssertMainThread();
-  SwitchObserverList& observer = GetSwitchObserverList(aDevice);
-  observer.AddObserver(aObserver);
-  if (observer.Length() == 1) {
-    EnableSwitchNotifications(aDevice);
-  }
-}
-
-void
-UnregisterSwitchObserver(SwitchDevice aDevice, SwitchObserver *aObserver)
-{
-  AssertMainThread();
-
-  if (!sSwitchObserverLists) {
-    return;
-  }
-
-  SwitchObserverList& observer = GetSwitchObserverList(aDevice);
-  if (!observer.RemoveObserver(aObserver) || observer.Length() > 0) {
-    return;
-  }
-
-  DisableSwitchNotifications(aDevice);
-  ReleaseObserversIfNeeded();
-}
-
-void
-NotifySwitchChange(const SwitchEvent& aEvent)
-{
-  // When callback this notification, main thread may call unregister function
-  // first. We should check if this pointer is valid.
-  if (!sSwitchObserverLists)
-    return;
-
-  SwitchObserverList& observer = GetSwitchObserverList(aEvent.device());
-  observer.Broadcast(aEvent);
-}
-
 static AlarmObserver* sAlarmObserver;
 
 bool
diff --git a/hal/Hal.h b/hal/Hal.h
index e45bbcde24..224b4c451e 100644
--- a/hal/Hal.h
+++ b/hal/Hal.h
@@ -402,37 +402,6 @@ MOZ_MUST_USE bool LockScreenOrientation(const dom::ScreenOrientationInternal& aO
 void UnlockScreenOrientation();
 
 /**
- * Register an observer for the switch of given SwitchDevice.
- *
- * The observer will receive data whenever the data generated by the
- * given switch.
- */
-void RegisterSwitchObserver(hal::SwitchDevice aDevice, hal::SwitchObserver *aSwitchObserver);
-
-/**
- * Unregister an observer for the switch of given SwitchDevice.
- */
-void UnregisterSwitchObserver(hal::SwitchDevice aDevice, hal::SwitchObserver *aSwitchObserver);
-
-/**
- * Notify the state of the switch.
- *
- * This API is internal to hal; clients shouldn't call it directly.
- */
-void NotifySwitchChange(const hal::SwitchEvent& aEvent);
-
-/**
- * Get current switch information.
- */
-hal::SwitchState GetCurrentSwitchState(hal::SwitchDevice aDevice);
-
-/**
- * Notify switch status change from input device.
- */
-void NotifySwitchStateFromInputDevice(hal::SwitchDevice aDevice,
-                                      hal::SwitchState aState);
-
-/**
  * Register an observer that is notified when a programmed alarm
  * expires.
  *
diff --git a/hal/HalInternal.h b/hal/HalInternal.h
index d93023dd0d..ea997c2f48 100644
--- a/hal/HalInternal.h
+++ b/hal/HalInternal.h
@@ -55,16 +55,6 @@ void EnableScreenConfigurationNotifications();
 void DisableScreenConfigurationNotifications();
 
 /**
- * Enable switch notifications from the backend
- */
-void EnableSwitchNotifications(hal::SwitchDevice aDevice);
-
-/**
- * Disable switch notifications from the backend
- */
-void DisableSwitchNotifications(hal::SwitchDevice aDevice);
-
-/**
  * Enable alarm notifications from the backend.
  */
 MOZ_MUST_USE bool EnableAlarm();
diff --git a/hal/HalTypes.h b/hal/HalTypes.h
index 5f0ad3ff7b..dc29f0553b 100644
--- a/hal/HalTypes.h
+++ b/hal/HalTypes.h
@@ -33,26 +33,6 @@ enum ShutdownMode {
   eHalShutdownMode_Count    = 3
 };
 
-class SwitchEvent;
-
-enum SwitchDevice {
-  SWITCH_DEVICE_UNKNOWN = -1,
-  SWITCH_HEADPHONES,
-  SWITCH_USB,
-  NUM_SWITCH_DEVICE
-};
-
-enum SwitchState {
-  SWITCH_STATE_UNKNOWN = -1,
-  SWITCH_STATE_ON,
-  SWITCH_STATE_OFF,
-  SWITCH_STATE_HEADSET,          // Headphone with microphone
-  SWITCH_STATE_HEADPHONE,        // without microphone
-  NUM_SWITCH_STATE
-};
-
-typedef Observer<SwitchEvent> SwitchObserver;
-
 // Note that we rely on the order of this enum's entries.  Higher priorities
 // should have larger int values.
 enum ProcessPriority {
@@ -141,28 +121,6 @@ struct ParamTraits<mozilla::hal::WakeLockControl>
              mozilla::hal::NUM_WAKE_LOCK>
 {};
 
-/**
- * Serializer for SwitchState
- */
-template <>
-struct ParamTraits<mozilla::hal::SwitchState>:
-  public ContiguousEnumSerializer<
-           mozilla::hal::SwitchState,
-           mozilla::hal::SWITCH_STATE_UNKNOWN,
-           mozilla::hal::NUM_SWITCH_STATE> {
-};
-
-/**
- * Serializer for SwitchDevice
- */
-template <>
-struct ParamTraits<mozilla::hal::SwitchDevice>:
-  public ContiguousEnumSerializer<
-           mozilla::hal::SwitchDevice,
-           mozilla::hal::SWITCH_DEVICE_UNKNOWN,
-           mozilla::hal::NUM_SWITCH_DEVICE> {
-};
-
 template <>
 struct ParamTraits<mozilla::hal::ProcessPriority>:
   public ContiguousEnumSerializer<
diff --git a/hal/fallback/FallbackSwitch.cpp b/hal/fallback/FallbackSwitch.cpp
index e9b7eab0ae..38d6a50e92 100644
--- a/hal/fallback/FallbackSwitch.cpp
+++ b/hal/fallback/FallbackSwitch.cpp
@@ -10,26 +10,6 @@ using namespace mozilla::hal;
 namespace mozilla {
 namespace hal_impl {
 
-void
-EnableSwitchNotifications(SwitchDevice aDevice)
-{
-}
-
-void
-DisableSwitchNotifications(SwitchDevice aDevice)
-{
-}
-
-SwitchState
-GetCurrentSwitchState(SwitchDevice aDevice) {
-  return SWITCH_STATE_UNKNOWN;
-}
-
-void
-NotifySwitchStateFromInputDevice(SwitchDevice aDevice, SwitchState aState)
-{
-}
-
 bool IsHeadphoneEventFromInputDev()
 {
   return false;
diff --git a/hal/sandbox/PHal.ipdl b/hal/sandbox/PHal.ipdl
index 37b69f93fe..1af550aff4 100644
--- a/hal/sandbox/PHal.ipdl
+++ b/hal/sandbox/PHal.ipdl
@@ -13,8 +13,6 @@ using mozilla::dom::ScreenOrientationInternal from "mozilla/dom/ScreenOrientatio
 using mozilla::hal::SensorType from "mozilla/HalSensor.h";
 using mozilla::hal::SensorAccuracyType from "mozilla/HalSensor.h";
 using mozilla::hal::WakeLockControl from "mozilla/HalTypes.h";
-using mozilla::hal::SwitchState from "mozilla/HalTypes.h";
-using mozilla::hal::SwitchDevice from "mozilla/HalTypes.h";
 using mozilla::hal::ProcessPriority from "mozilla/HalTypes.h";
 using nsIntRect from "nsRect.h";
 using PRTime from "prtime.h";
@@ -41,11 +39,6 @@ struct NetworkInformation {
   uint32_t dhcpGateway;
 };
 
-struct SwitchEvent {
-  SwitchDevice device;
-  SwitchState status;
-};
-
 struct WakeLockInformation {
   nsString topic;
   uint32_t numLocks;
@@ -80,7 +73,6 @@ child:
     async NotifyNetworkChange(NetworkInformation aNetworkInfo);
     async NotifyWakeLockChange(WakeLockInformation aWakeLockInfo);
     async NotifyScreenConfigurationChange(ScreenConfiguration aScreenOrientation);
-    async NotifySwitchChange(SwitchEvent aEvent);
     async NotifySystemClockChange(int64_t aClockDeltaMS); 
     async NotifySystemTimezoneChange(SystemTimezoneChangeInformation aSystemTimezoneChangeInfo); 
 
@@ -138,11 +130,6 @@ parent:
       returns (bool allowed);
     async UnlockScreenOrientation();
  
-    async EnableSwitchNotifications(SwitchDevice aDevice);
-    async DisableSwitchNotifications(SwitchDevice aDevice);
-    sync GetCurrentSwitchState(SwitchDevice aDevice)
-      returns (SwitchState aState);
-
     async FactoryReset(nsString aReason);
 
 child:
diff --git a/hal/sandbox/SandboxHal.cpp b/hal/sandbox/SandboxHal.cpp
index d33a53a2fb..9771b3ef64 100644
--- a/hal/sandbox/SandboxHal.cpp
+++ b/hal/sandbox/SandboxHal.cpp
@@ -300,34 +300,6 @@ GetWakeLockInfo(const nsAString &aTopic, WakeLockInformation *aWakeLockInfo)
   Hal()->SendGetWakeLockInfo(nsString(aTopic), aWakeLockInfo);
 }
 
-void
-EnableSwitchNotifications(SwitchDevice aDevice)
-{
-  Hal()->SendEnableSwitchNotifications(aDevice);
-}
-
-void
-DisableSwitchNotifications(SwitchDevice aDevice)
-{
-  Hal()->SendDisableSwitchNotifications(aDevice);
-}
-
-SwitchState
-GetCurrentSwitchState(SwitchDevice aDevice)
-{
-  SwitchState state;
-  Hal()->SendGetCurrentSwitchState(aDevice, &state);
-  return state;
-}
-
-void
-NotifySwitchStateFromInputDevice(SwitchDevice aDevice, SwitchState aState)
-{
-  Unused << aDevice;
-  Unused << aState;
-  NS_RUNTIMEABORT("Only the main process may notify switch state change.");
-}
-
 bool
 EnableAlarm()
 {
@@ -420,7 +392,6 @@ class HalParent : public PHalParent
                 , public ISensorObserver
                 , public WakeLockObserver
                 , public ScreenConfigurationObserver
-                , public SwitchObserver
                 , public SystemClockChangeObserver
                 , public SystemTimezoneChangeObserver
 {
@@ -440,10 +411,6 @@ public:
     hal::UnregisterWakeLockObserver(this);
     hal::UnregisterSystemClockChangeObserver(this);
     hal::UnregisterSystemTimezoneChangeObserver(this);
-    for (int32_t switchDevice = SWITCH_DEVICE_UNKNOWN + 1;
-         switchDevice < NUM_SWITCH_DEVICE; ++switchDevice) {
-      hal::UnregisterSwitchObserver(SwitchDevice(switchDevice), this);
-    }
   }
 
   virtual bool
@@ -771,34 +738,6 @@ public:
     Unused << SendNotifyWakeLockChange(aWakeLockInfo);
   }
 
-  virtual bool
-  RecvEnableSwitchNotifications(const SwitchDevice& aDevice) override
-  {
-    // Content has no reason to listen to switch events currently.
-    hal::RegisterSwitchObserver(aDevice, this);
-    return true;
-  }
-
-  virtual bool
-  RecvDisableSwitchNotifications(const SwitchDevice& aDevice) override
-  {
-    hal::UnregisterSwitchObserver(aDevice, this);
-    return true;
-  }
-
-  void Notify(const SwitchEvent& aSwitchEvent) override
-  {
-    Unused << SendNotifySwitchChange(aSwitchEvent);
-  }
-
-  virtual bool
-  RecvGetCurrentSwitchState(const SwitchDevice& aDevice, hal::SwitchState *aState) override
-  {
-    // Content has no reason to listen to switch events currently.
-    *aState = hal::GetCurrentSwitchState(aDevice);
-    return true;
-  }
-
   void Notify(const int64_t& aClockDeltaMS) override
   {
     Unused << SendNotifySystemClockChange(aClockDeltaMS);
@@ -869,12 +808,6 @@ public:
   }
 
   virtual bool
-  RecvNotifySwitchChange(const mozilla::hal::SwitchEvent& aEvent) override {
-    hal::NotifySwitchChange(aEvent);
-    return true;
-  }
-
-  virtual bool
   RecvNotifySystemClockChange(const int64_t& aClockDeltaMS) override {
     hal::NotifySystemClockChange(aClockDeltaMS);
     return true;