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Diffstat (limited to 'src/com/dsi/ant/server/AntService.java')
| -rw-r--r-- | src/com/dsi/ant/server/AntService.java | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/src/com/dsi/ant/server/AntService.java b/src/com/dsi/ant/server/AntService.java new file mode 100644 index 0000000..5afae5a --- /dev/null +++ b/src/com/dsi/ant/server/AntService.java @@ -0,0 +1,698 @@ +/* + * ANT Stack + * + * Copyright 2009 Dynastream Innovations + * + * 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. + */ + +package com.dsi.ant.server; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +import android.bluetooth.BluetoothAdapter; +import android.bluetooth.IBluetooth; +import android.bluetooth.IBluetoothStateChangeCallback; +import android.content.Context; +import android.content.Intent; +import android.app.Service; +import android.os.IBinder; +import android.os.RemoteException; +import android.os.ServiceManager; +import android.server.BluetoothService; +import android.util.Log; + +import com.dsi.ant.core.*; + +import com.dsi.ant.server.AntHalDefine; +import com.dsi.ant.server.IAntHal; +import com.dsi.ant.server.IAntHalCallback; +import com.dsi.ant.server.Version; + +public class AntService extends Service +{ + private static final String TAG = "AntHalService"; + + private static final boolean DEBUG = false; + + public static final String ANT_SERVICE = "AntService"; + + private JAntJava mJAnt = null; + + private boolean mInitialized = false; + + private Object mChangeAntPowerState_LOCK = new Object(); + private static Object sAntHalServiceDestroy_LOCK = new Object(); + + IAntHalCallback mCallback; + + private BluetoothService mBluetoothService; + + /** We requested an ANT enable in the BT service, and are waiting for it to complete */ + private boolean mBluetoothServiceAntEnabling; + /** We requested an ANT disable in the BT service, and are waiting for it to complete */ + private boolean mBluetoothServiceAntDisabling; + + public static boolean startService(Context context) + { + return ( null != context.startService(new Intent(IAntHal.class.getName())) ); + } + + /** + * Calls back the registered callback with the change to the new state + * @param state the {@link AntHalDefine} state + */ + private void setState(int state) + { + synchronized(mChangeAntPowerState_LOCK) { + if(DEBUG) Log.i(TAG, "Setting ANT State = "+ state +" / "+ AntHalDefine.getAntHalStateString(state)); + + if (mCallback != null) + { + try + { + if(DEBUG) Log.d(TAG, "Calling status changed callback "+ mCallback.toString()); + + mCallback.antHalStateChanged(state); + } + catch (RemoteException e) + { + // Don't do anything as this is a problem in the application + + if(DEBUG) Log.e(TAG, "ANT HAL State Changed callback failure in application", e); + } + } + else + { + if(DEBUG) Log.d(TAG, "Calling status changed callback is null"); + } + } + } + + /** + * Requests to change the state + * @param state The desired state to change to + * @return An {@link AntHalDefine} result + */ + private int doSetAntState(int state) + { + synchronized(mChangeAntPowerState_LOCK) { + int result = AntHalDefine.ANT_HAL_RESULT_FAIL_INVALID_REQUEST; + + switch(state) + { + case AntHalDefine.ANT_HAL_STATE_ENABLED: + { + result = asyncSetAntPowerState(true); + break; + } + case AntHalDefine.ANT_HAL_STATE_DISABLED: + { + result = asyncSetAntPowerState(false); + break; + } + case AntHalDefine.ANT_HAL_STATE_RESET: + { + result = doHardReset(); + break; + } + } + + return result; + } + } + + /** + * Queries the native code for state + * @return An {@link AntHalDefine} state + */ + private int doGetAntState() + { + if(DEBUG) Log.v(TAG, "doGetAntState start"); + + int retState; + if (mBluetoothServiceAntEnabling) + { + if(DEBUG) Log.d(TAG, "Bluetooth Service ANT Enabling"); + + retState = AntHalDefine.ANT_HAL_STATE_ENABLING; + } + else if(mBluetoothServiceAntDisabling) + { + if(DEBUG) Log.d(TAG, "Bluetooth Service ANT Disabling"); + + retState = AntHalDefine.ANT_HAL_STATE_DISABLING; + } + else + { + retState = mJAnt.getRadioEnabledStatus(); // ANT state is native state + } + + if(DEBUG) Log.i(TAG, "Get ANT State = "+ retState +" / "+ AntHalDefine.getAntHalStateString(retState)); + + return retState; + } + + /** + * The callback that the BluetoothAdapterStateMachine will call back on when power is on / off. + * When called back, this function will call the native enable() or disable() + */ + private final IBluetoothStateChangeCallback.Stub mBluetoothStateChangeCallback = new IBluetoothStateChangeCallback.Stub() + { + @Override + public void onBluetoothStateChange(boolean on) throws RemoteException + { + synchronized(mChangeAntPowerState_LOCK) { + if (DEBUG) Log.i(TAG, "bluetooth state change callback: " + on); + + if (on) { + mBluetoothServiceAntEnabling = false; + + if (enableBlocking() == AntHalDefine.ANT_HAL_RESULT_SUCCESS) { + if(DEBUG) Log.v(TAG, "ANT native enable: Success"); + setState(AntHalDefine.ANT_HAL_STATE_ENABLED); + } else { + Log.e(TAG, "ANT native enable failed"); + setState(AntHalDefine.ANT_HAL_STATE_DISABLED); + } + } else { + mBluetoothServiceAntDisabling = false; + + if (disableBlocking() == AntHalDefine.ANT_HAL_RESULT_SUCCESS) { + if(DEBUG) Log.v(TAG, "ANT native disable: Success"); + setState(AntHalDefine.ANT_HAL_STATE_DISABLED); + } else { + Log.e(TAG, "ANT native disable failed"); + setState(doGetAntState()); + } + } + } + } + }; + + /** + * Perform a power change if required. + * Tries to use changeAntWirelessState() in {@link BluetoothService}. If it does not exist then + * it defaults to a native enable() or disable() call + * @param state true for enable, false for disable + * @return {@link AntHalDefine#ANT_HAL_RESULT_SUCCESS} when the request is successfully sent, + * false otherwise + */ + private int asyncSetAntPowerState(final boolean state) + { + synchronized(mChangeAntPowerState_LOCK) { + // Check we are not already in/transitioning to the state we want + int currentState = doGetAntState(); + boolean doNativePower = false; + + if(state) { + if((AntHalDefine.ANT_HAL_STATE_ENABLED == currentState) + || (AntHalDefine.ANT_HAL_STATE_ENABLING == currentState)) { + if(DEBUG) Log.d(TAG, "Enable request ignored as already enabled/enabling"); + + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } else if(AntHalDefine.ANT_HAL_STATE_DISABLING == currentState) { + Log.w(TAG, "Enable request ignored as already disabling"); + + return AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + } + } else { + if((AntHalDefine.ANT_HAL_STATE_DISABLED == currentState) + || (AntHalDefine.ANT_HAL_STATE_DISABLING == currentState)) { + if(DEBUG)Log.d(TAG, "Disable request ignored as already disabled/disabling"); + + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } else if(AntHalDefine.ANT_HAL_STATE_ENABLING == currentState) { + Log.w(TAG, "Disable request ignored as already enabling"); + + return AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + } + } + + if (mBluetoothService != null) { + try { + Method method_changeAntWirelessState = BluetoothService.class.getMethod( + "changeAntWirelessState", boolean.class, + IBluetoothStateChangeCallback.class); + + boolean result = (Boolean) method_changeAntWirelessState.invoke(mBluetoothService, + state, mBluetoothStateChangeCallback); + if (result) { + if (state) { + if (DEBUG) Log.d(TAG, "enable request successful"); + mBluetoothServiceAntEnabling = true; + setState(AntHalDefine.ANT_HAL_STATE_ENABLING); + } else { + if (DEBUG) Log.d(TAG, "disable request successful"); + mBluetoothServiceAntDisabling = true; + setState(AntHalDefine.ANT_HAL_STATE_DISABLING); + } + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } else { + Log.e(TAG, "power " + state + " request failed"); + return AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + } + } catch (NoSuchMethodException e) { + // BluetoothService does not contain the ANT frameworks power function, which means + // the native code will do the chip power. + doNativePower = true; + } catch (IllegalAccessException e) { + // This exception should never happen, but if it does it is something we need to fix. + // This call is made on a Binder Thread, so rather than crash it and have it silently + // fail, we re-throw a supported IPC exception so that the higher level will know + // about the error. + throw new SecurityException("BluetoothService.changeAntWirelessState() function should be public\n" + e.getMessage()); + } catch (InvocationTargetException e) { + // This exception should never happen, but if it does it is something we need to fix. + // This call is made on a Binder Thread, so rather than crash it and have it silently + // fail, we re-throw a supported IPC exception so that the higher level will know + // about the error. + throw new IllegalArgumentException("BluetoothService.changeAntWirelessState() should not throw exceptions\n" + e.getMessage()); + } + } + else + { + Log.w(TAG, "in disable: No BluetoothService"); + doNativePower = true; + } + + if(doNativePower) { + if (state) { + enableBackground(); + } else { + disableBackground(); + } + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + + return AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + } + } + + /** + * Calls enable on the native libantradio.so + * @return {@link AntHalDefine#ANT_HAL_RESULT_SUCCESS} when successful, or + * {@link AntHalDefine#ANT_HAL_RESULT_FAIL_UNKNOWN} if unsuccessful + */ + private int enableBlocking() + { + int ret = AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + synchronized(sAntHalServiceDestroy_LOCK) + { + if (mJAnt != null) + { + if(JAntStatus.SUCCESS == mJAnt.enable()) + { + if(DEBUG) Log.v(TAG, "Enable call: Success"); + ret = AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + else + { + if(DEBUG) Log.v(TAG, "Enable call: Failure"); + } + } + } + return ret; + } + + /** + * Calls disable on the native libantradio.so + * @return {@link AntHalDefine#ANT_HAL_RESULT_SUCCESS} when successful, or + * {@link AntHalDefine#ANT_HAL_RESULT_FAIL_UNKNOWN} if unsuccessful + */ + private int disableBlocking() + { + int ret = AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + synchronized(sAntHalServiceDestroy_LOCK) + { + if (mJAnt != null) + { + if(JAntStatus.SUCCESS == mJAnt.disable()) + { + if(DEBUG) Log.v(TAG, "Disable callback end: Success"); + ret = AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + else + { + if (DEBUG) Log.v(TAG, "Disable callback end: Failure"); + } + } + } + return ret; + } + + /** + * Post an enable runnable. + */ + private int enableBackground() + { + if(DEBUG) Log.v(TAG, "Enable start"); + + if (DEBUG) Log.d(TAG, "Enable: enabling the radio"); + + // TODO use handler to post runnable rather than creating a new thread. + new Thread(new Runnable() { + public void run() { + enableBlocking(); + } + }).start(); + + if(DEBUG) Log.v(TAG, "Enable call end: Successfully called"); + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + + /** + * Post a disable runnable. + */ + private int disableBackground() + { + if(DEBUG) Log.v(TAG, "Disable start"); + + // TODO use handler to post runnable rather than creating a new thread. + new Thread(new Runnable() { + public void run() { + disableBlocking(); + } + }).start(); + + if(DEBUG) Log.v(TAG, "Disable call end: Success"); + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + + private int doANTTxMessage(byte[] message) + { + if(DEBUG) Log.v(TAG, "ANT Tx Message start"); + + if(message == null) + { + Log.e(TAG, "ANTTxMessage invalid message: message is null"); + return AntHalDefine.ANT_HAL_RESULT_FAIL_INVALID_REQUEST; + } + + int result = AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + + JAntStatus status = mJAnt.ANTTxMessage(message); + + if(JAntStatus.SUCCESS == status) + { + if (DEBUG) Log.d (TAG, "mJAnt.ANTTxMessage returned status: " + status.toString()); + + result = AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + else + { + if (DEBUG) Log.w( TAG, "mJAnt.ANTTxMessage returned status: " + status.toString() ); + + if(JAntStatus.FAILED_BT_NOT_INITIALIZED == status) + { + result = AntHalDefine.ANT_HAL_RESULT_FAIL_NOT_ENABLED; + } + else if(JAntStatus.NOT_SUPPORTED == status) + { + result = AntHalDefine.ANT_HAL_RESULT_FAIL_NOT_SUPPORTED; + } + else if(JAntStatus.INVALID_PARM == status) + { + result = AntHalDefine.ANT_HAL_RESULT_FAIL_INVALID_REQUEST; + } + } + + if (DEBUG) Log.v(TAG, "ANTTxMessage: Result = "+ result); + + if(DEBUG) Log.v(TAG, "ANT Tx Message end"); + + return result; + } + + private int doRegisterAntHalCallback(IAntHalCallback callback) + { + if(DEBUG) Log.i(TAG, "Registering callback: "+ callback.toString()); + + mCallback = callback; + + return AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + + private int doUnregisterAntHalCallback(IAntHalCallback callback) + { + if(DEBUG) Log.i(TAG, "UNRegistering callback: "+ callback.toString()); + + int result = AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + + if(mCallback.asBinder() == callback.asBinder()) + { + mCallback = null; + result = AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + + return result; + } + + private int doGetServiceLibraryVersionCode() + { + return Version.ANT_HAL_LIBRARY_VERSION_CODE; + } + + private String doGetServiceLibraryVersionName() + { + return Version.ANT_HAL_LIBRARY_VERSION_NAME; + } + + private int doHardReset() + { + int ret = AntHalDefine.ANT_HAL_RESULT_FAIL_UNKNOWN; + synchronized(sAntHalServiceDestroy_LOCK) + { + if (mJAnt != null) + { + if(JAntStatus.SUCCESS == mJAnt.hardReset()) + { + if(DEBUG) Log.v(TAG, "Hard Reset end: Success"); + ret = AntHalDefine.ANT_HAL_RESULT_SUCCESS; + } + else + { + if (DEBUG) Log.v(TAG, "Hard Reset end: Failure"); + } + } + } + return ret; + } + + // ----------------------------------------------------------------------------------------- IAntHal + + private final IAntHal.Stub mHalBinder = new IAntHal.Stub() + { + public int setAntState(int state) + { + return doSetAntState(state); + } + + public int getAntState() + { + return doGetAntState(); + } + + public int ANTTxMessage(byte[] message) + { + return doANTTxMessage(message); + } + + // Call these in onServiceConnected and when unbinding + public int registerAntHalCallback(IAntHalCallback callback) + { + return doRegisterAntHalCallback(callback); + } + + public int unregisterAntHalCallback(IAntHalCallback callback) + { + return doUnregisterAntHalCallback(callback); + } + + public int getServiceLibraryVersionCode() + { + return doGetServiceLibraryVersionCode(); + } + + public String getServiceLibraryVersionName() + { + return doGetServiceLibraryVersionName(); + } + }; // new IAntHal.Stub() + + // -------------------------------------------------------------------------------------- Service + + @Override + public void onCreate() + { + if (DEBUG) Log.d(TAG, "onCreate() entered"); + + super.onCreate(); + + mBluetoothServiceAntEnabling = false; + mBluetoothServiceAntDisabling = false; + + if(null != mJAnt) + { + // This somehow happens when quickly starting/stopping an application. + if (DEBUG) Log.e(TAG, "LAST JAnt HCI Interface object not destroyed"); + } + // create a single new JAnt HCI Interface instance + mJAnt = new JAntJava(); + JAntStatus createResult = mJAnt.create(mJAntCallback); + + if (createResult == JAntStatus.SUCCESS) + { + mBluetoothService = (BluetoothService) IBluetooth.Stub.asInterface(ServiceManager.getService(BluetoothAdapter.BLUETOOTH_SERVICE)); + + if (mBluetoothService == null) + { + Log.e(TAG, "mBluetoothService == null"); + mInitialized = false; + } + else + { + mInitialized = true; + + if (DEBUG) Log.d(TAG, "JAntJava create success"); + } + } + else + { + mInitialized = false; + + if (DEBUG) Log.e(TAG, "JAntJava create failed: " + createResult); + } + } + + @Override + public void onDestroy() + { + if (DEBUG) Log.d(TAG, "onDestroy() entered"); + + try + { + if(null != mJAnt) + { + synchronized(sAntHalServiceDestroy_LOCK) + { + if (asyncSetAntPowerState(false) != AntHalDefine.ANT_HAL_RESULT_SUCCESS) + { + Log.w(TAG, "onDestroy disable failed"); + } + int result = disableBlocking(); + if (DEBUG) Log.d(TAG, "onDestroy: disable result is: " + AntHalDefine.getAntHalResultString(result)); + mJAnt.destroy(); + mJAnt = null; + } + } + + mCallback = null; + } + finally + { + super.onDestroy(); + } + } + + @Override + public IBinder onBind(Intent intent) + { + if (DEBUG) Log.d(TAG, "onBind() entered"); + + IBinder binder = null; + + if (mInitialized) + { + if(intent.getAction().equals(IAntHal.class.getName())) + { + if (DEBUG) Log.i(TAG, "Bind: IAntHal"); + + binder = mHalBinder; + } + } + + // As someone has started using us, make sure we run "forever" like we + // are a system service. + startService(this); + + return binder; + } + + @Override + public boolean onUnbind(Intent intent) + { + if (DEBUG) Log.d(TAG, "onUnbind() entered"); + + mCallback = null; + + return super.onUnbind(intent); + } + + @Override + public int onStartCommand(Intent intent, int flags, int startId) + { + if (DEBUG) Log.d(TAG, "onStartCommand() entered"); + + if (!mInitialized) + { + if (DEBUG) Log.e(TAG, "not initialized, stopping self"); + stopSelf(); + } + return START_NOT_STICKY; + } + + // ----------------------------------------------------------------------------------------- JAnt Callbacks + + private JAntJava.ICallback mJAntCallback = new JAntJava.ICallback() + { + public synchronized void ANTRxMessage( byte[] message) + { + if(null != mCallback) + { + try + { + mCallback.antHalRxMessage(message); + } + catch (RemoteException e) + { + // Don't do anything as this is a problem in the application + if(DEBUG) Log.e(TAG, "ANT HAL Rx Message callback failure in application", e); + } + } + else + { + Log.w(TAG, "JAnt callback called after service has been destroyed"); + } + } + + public synchronized void ANTStateChange(int NewState) + { + if (DEBUG) Log.i(TAG, "ANTStateChange callback to " + NewState); + + if(mBluetoothServiceAntEnabling) { + Log.w(TAG, "Native state change ignored while waiting for BluetoothService ANT enable"); + return; + } + + if(mBluetoothServiceAntDisabling) { + Log.w(TAG, "Native state change ignored while waiting for BluetoothService ANT disable"); + return; + } + + setState(NewState); + } + }; +} + |