1 files changed, 180 insertions, 0 deletions
diff --git a/dom/system/gonk/AudioManager.h b/dom/system/gonk/AudioManager.h
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+++ b/dom/system/gonk/AudioManager.h
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+/* Copyright 2012 Mozilla Foundation and Mozilla contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef mozilla_dom_system_b2g_audiomanager_h__
+#define mozilla_dom_system_b2g_audiomanager_h__
+
+#include "mozilla/HalTypes.h"
+#include "mozilla/Observer.h"
+#include "mozilla/UniquePtr.h"
+#include "nsAutoPtr.h"
+#include "nsDataHashtable.h"
+#include "nsIAudioManager.h"
+#include "nsIObserver.h"
+#include "android_audio/AudioSystem.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"
+
+class nsISettingsServiceLock;
+
+namespace mozilla {
+namespace hal {
+class SwitchEvent;
+typedef Observer<SwitchEvent> SwitchObserver;
+} // namespace hal
+
+namespace dom {
+namespace gonk {
+
+class VolumeInitCallback;
+
+class AudioManager final : public nsIAudioManager
+                         , public nsIObserver
+{
+public:
+  static already_AddRefed<AudioManager> GetInstance();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIAUDIOMANAGER
+  NS_DECL_NSIOBSERVER
+
+  // Validate whether the volume index is within the range
+  nsresult ValidateVolumeIndex(int32_t aStream, uint32_t aIndex) const;
+
+  // Called when android AudioFlinger in mediaserver is died
+  void HandleAudioFlingerDied();
+
+  void HandleHeadphoneSwitchEvent(const hal::SwitchEvent& aEvent);
+
+  class VolumeStreamState {
+  public:
+    explicit VolumeStreamState(AudioManager& aManager, int32_t aStreamType);
+    int32_t GetStreamType()
+    {
+      return mStreamType;
+    }
+    bool IsDevicesChanged(bool aFromCache = true);
+    void ClearDevicesChanged();
+    uint32_t GetLastDevices()
+    {
+      return mLastDevices;
+    }
+    bool IsVolumeIndexesChanged();
+    void ClearVolumeIndexesChanged();
+    void InitStreamVolume();
+    uint32_t GetMaxIndex();
+    uint32_t GetDefaultIndex();
+    uint32_t GetVolumeIndex();
+    uint32_t GetVolumeIndex(uint32_t aDevice);
+    void ClearCurrentVolumeUpdated();
+    // Set volume index to all active devices.
+    // Active devices are chosen by android AudioPolicyManager.
+    nsresult SetVolumeIndexToActiveDevices(uint32_t aIndex);
+    // Set volume index to all alias streams for device. Alias streams have same volume.
+    nsresult SetVolumeIndexToAliasStreams(uint32_t aIndex, uint32_t aDevice);
+    nsresult SetVolumeIndexToConsistentDeviceIfNeeded(uint32_t aIndex, uint32_t aDevice);
+    nsresult SetVolumeIndex(uint32_t aIndex, uint32_t aDevice, bool aUpdateCache = true);
+    // Restore volume index to all devices. Called when AudioFlinger is restarted.
+    void RestoreVolumeIndexToAllDevices();
+  private:
+    AudioManager& mManager;
+    const int32_t mStreamType;
+    uint32_t mLastDevices;
+    bool mIsDevicesChanged;
+    bool mIsVolumeIndexesChanged;
+    nsDataHashtable<nsUint32HashKey, uint32_t> mVolumeIndexes;
+  };
+
+protected:
+  int32_t mPhoneState;
+
+  bool mIsVolumeInited;
+
+  // A bitwise variable for volume update of audio output devices,
+  // clear it after store the value into database.
+  uint32_t mAudioOutDevicesUpdated;
+
+  // Connected devices that are controlled by setDeviceConnectionState()
+  nsDataHashtable<nsUint32HashKey, nsCString> mConnectedDevices;
+
+  nsDataHashtable<nsUint32HashKey, uint32_t> mAudioDeviceTableIdMaps;
+
+  bool mSwitchDone;
+
+#if defined(MOZ_B2G_BT) || ANDROID_VERSION >= 17
+  bool mBluetoothA2dpEnabled;
+#endif
+#ifdef MOZ_B2G_BT
+  bool mA2dpSwitchDone;
+#endif
+  nsTArray<UniquePtr<VolumeStreamState> > mStreamStates;
+  uint32_t mLastChannelVolume[AUDIO_STREAM_CNT];
+
+  bool IsFmOutConnected();
+
+  nsresult SetStreamVolumeForDevice(int32_t aStream,
+                                    uint32_t aIndex,
+                                    uint32_t aDevice);
+  nsresult SetStreamVolumeIndex(int32_t aStream, uint32_t aIndex);
+  nsresult GetStreamVolumeIndex(int32_t aStream, uint32_t* aIndex);
+
+  void UpdateCachedActiveDevicesForStreams();
+  uint32_t GetDevicesForStream(int32_t aStream, bool aFromCache = true);
+  uint32_t GetDeviceForStream(int32_t aStream);
+  // Choose one device as representative of active devices.
+  static uint32_t SelectDeviceFromDevices(uint32_t aOutDevices);
+
+private:
+  nsAutoPtr<mozilla::hal::SwitchObserver> mObserver;
+
+  void HandleBluetoothStatusChanged(nsISupports* aSubject,
+                                    const char* aTopic,
+                                    const nsCString aAddress);
+  void HandleAudioChannelProcessChanged();
+
+  // Append the audio output device to the volume setting string.
+  nsAutoCString AppendDeviceToVolumeSetting(const char* aName,
+                                            uint32_t aDevice);
+
+  // We store the volume setting in the database, these are related functions.
+  void InitVolumeFromDatabase();
+  void MaybeUpdateVolumeSettingToDatabase(bool aForce = false);
+
+  // Promise functions.
+  void InitDeviceVolumeSucceeded();
+  void InitDeviceVolumeFailed(const char* aError);
+
+  void AudioOutDeviceUpdated(uint32_t aDevice);
+
+  void UpdateHeadsetConnectionState(hal::SwitchState aState);
+  void UpdateDeviceConnectionState(bool aIsConnected, uint32_t aDevice, const nsCString& aDeviceName);
+  void SetAllDeviceConnectionStates();
+
+  AudioManager();
+  ~AudioManager();
+
+  friend class VolumeInitCallback;
+  friend class VolumeStreamState;
+  friend class GonkAudioPortCallback;
+};
+
+} /* namespace gonk */
+} /* namespace dom */
+} /* namespace mozilla */
+
+#endif // mozilla_dom_system_b2g_audiomanager_h__