| /****************************************************************************** |
| * |
| * Copyright 2021 The Android Open Source Project |
| * |
| * 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.android.bluetooth.acm; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothCodecConfig; |
| import android.bluetooth.BluetoothCodecStatus; |
| import android.bluetooth.BluetoothDevice; |
| import android.util.Log; |
| import java.util.List; |
| |
| import com.android.bluetooth.Utils; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| /** |
| * ACM Native Interface to/from JNI. |
| */ |
| public class AcmNativeInterface { |
| private static final String TAG = "AcmNativeInterface"; |
| private static final boolean DBG = true; |
| private BluetoothAdapter mAdapter; |
| static final int CONTEXT_TYPE_UNKNOWN = 0; |
| static final int CONTEXT_TYPE_MUSIC = 1; |
| static final int CONTEXT_TYPE_VOICE = 2; |
| static final int CONTEXT_TYPE_MUSIC_VOICE = 3; |
| @GuardedBy("INSTANCE_LOCK") |
| private static AcmNativeInterface sInstance; |
| private static final Object INSTANCE_LOCK = new Object(); |
| |
| static { |
| classInitNative(); |
| } |
| |
| @VisibleForTesting |
| private AcmNativeInterface() { |
| mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| if (mAdapter == null) { |
| Log.wtf(TAG, "No Bluetooth Adapter Available"); |
| } |
| } |
| |
| /** |
| * Get singleton instance. |
| */ |
| public static AcmNativeInterface getInstance() { |
| synchronized (INSTANCE_LOCK) { |
| if (sInstance == null) { |
| sInstance = new AcmNativeInterface(); |
| } |
| return sInstance; |
| } |
| } |
| |
| /** |
| * Initializes the native interface. |
| * |
| * @param maxConnectedAudioDevices maximum number of A2DP Sink devices that can be connected |
| * simultaneously |
| * @param codecConfigPriorities an array with the codec configuration |
| * priorities to configure. |
| */ |
| public void init(int maxConnectedAudioDevices, BluetoothCodecConfig[] codecConfigPriorities) { |
| initNative(maxConnectedAudioDevices, codecConfigPriorities); |
| } |
| |
| |
| /** |
| * Initiates ACM connection to a remote device. |
| * |
| * @param device the remote device |
| * @return true on success, otherwise false. |
| */ |
| public boolean connectAcm(BluetoothDevice device, int contextType, int profileType, int preferredContext) { |
| return connectAcmNative(getByteAddress(device), contextType, profileType, preferredContext); |
| } |
| |
| /** |
| * Disconnects ACM from a remote device. |
| * |
| * @param device the remote device |
| * @return true on success, otherwise false. |
| */ |
| public boolean disconnectAcm(BluetoothDevice device, int contextType) { |
| return disconnectAcmNative(getByteAddress(device), contextType); |
| } |
| |
| /** |
| * Sets a connected ACM group/remote as active. |
| * |
| * @param device the remote device |
| * @return true on success, otherwise false. |
| */ |
| public boolean setActiveDevice(BluetoothDevice device, int contextType) { |
| return setActiveDeviceNative(getByteAddress(device), contextType); |
| } |
| |
| /** |
| * Sends Start stream to remote group/remote for voice call. |
| * |
| * @param device the remote device |
| * @return true on success, otherwise false. |
| */ |
| public boolean startStream(BluetoothDevice device, int contextType) { |
| return startStreamNative(getByteAddress(device), contextType); |
| } |
| |
| /** |
| * Sends Stop stream to remote group/remote for voice call. |
| * |
| * @param device the remote device |
| * @return true on success, otherwise false. |
| */ |
| public boolean stopStream(BluetoothDevice device, int contextType) { |
| return stopStreamNative(getByteAddress(device), contextType); |
| } |
| |
| /** |
| * Sets the codec configuration preferences. |
| * |
| * @param device the remote Bluetooth device |
| * @param codecConfigArray an array with the codec configurations to |
| * configure. |
| * @return true on success, otherwise false. |
| */ |
| public boolean setCodecConfigPreference(BluetoothDevice device, BluetoothCodecConfig[] codecConfigArray, |
| int contextType, int preferredContext) { |
| return setCodecConfigPreferenceNative(getByteAddress(device), codecConfigArray, |
| contextType, preferredContext); |
| } |
| |
| public boolean ChangeCodecConfigPreference(BluetoothDevice device, |
| String message) { |
| return ChangeCodecConfigPreferenceNative(getByteAddress(device), message); |
| } |
| /** |
| * Cleanup the native interface. |
| */ |
| public void cleanup() { |
| cleanupNative(); |
| } |
| |
| private BluetoothDevice getDevice(byte[] address) { |
| return mAdapter.getRemoteDevice(address); |
| } |
| |
| private byte[] getByteAddress(BluetoothDevice device) { |
| if (device == null) { |
| return Utils.getBytesFromAddress("00:00:00:00:00:00"); |
| } |
| return Utils.getBytesFromAddress(device.getAddress()); |
| } |
| |
| private void sendMessageToService(AcmStackEvent event) { |
| AcmService service = AcmService.getAcmService(); |
| if (service != null) { |
| service.messageFromNative(event); |
| } else { |
| Log.w(TAG, "Event ignored, service not available: " + event); |
| } |
| } |
| |
| // Callbacks from the native stack back into the Java framework. |
| // All callbacks are routed via the Service which will disambiguate which |
| // state machine the message should be routed to. |
| |
| private void onConnectionStateChanged(byte[] address, int state, int contextType) { |
| AcmStackEvent event = |
| new AcmStackEvent(AcmStackEvent.EVENT_TYPE_CONNECTION_STATE_CHANGED); |
| event.device = getDevice(address); |
| event.valueInt1 = state; |
| event.valueInt2 = contextType; |
| |
| if (DBG) { |
| Log.d(TAG, "onConnectionStateChanged: " + event); |
| } |
| sendMessageToService(event); |
| } |
| |
| private void onAudioStateChanged(byte[] address, int state, int contextType) { |
| AcmStackEvent event = new AcmStackEvent(AcmStackEvent.EVENT_TYPE_AUDIO_STATE_CHANGED); |
| event.device = getDevice(address); |
| event.valueInt1 = state; |
| event.valueInt2 = contextType; |
| |
| if (DBG) { |
| Log.d(TAG, "onAudioStateChanged: " + event); |
| } |
| sendMessageToService(event); |
| } |
| |
| private void onCodecConfigChanged(byte[] address, |
| BluetoothCodecConfig newCodecConfig, |
| BluetoothCodecConfig[] codecsLocalCapabilities, |
| BluetoothCodecConfig[] codecsSelectableCapabilities, int contextType) { |
| AcmStackEvent event = new AcmStackEvent(AcmStackEvent.EVENT_TYPE_CODEC_CONFIG_CHANGED); |
| event.device = getDevice(address); |
| event.codecStatus = new BluetoothCodecStatus(newCodecConfig, |
| codecsLocalCapabilities, |
| codecsSelectableCapabilities); |
| event.valueInt2 = contextType; |
| if (DBG) { |
| Log.d(TAG, "onCodecConfigChanged: " + event); |
| } |
| sendMessageToService(event); |
| } |
| |
| // Native methods that call into the JNI interface |
| private static native void classInitNative(); |
| private native void initNative(int maxConnectedAudioDevices, |
| BluetoothCodecConfig[] codecConfigPriorities); |
| private native boolean connectAcmNative(byte[] address, int contextType, int profileType, int preferredContext); |
| private native boolean disconnectAcmNative(byte[] address, int contextType); |
| private native boolean setActiveDeviceNative(byte[] address, int contextType); |
| private native boolean startStreamNative(byte[] address, int contextType); |
| private native boolean stopStreamNative(byte[] address, int contextType); |
| private native boolean setCodecConfigPreferenceNative(byte[] address, |
| BluetoothCodecConfig[] codecConfigArray, int contextType, int preferredContext); |
| private native boolean ChangeCodecConfigPreferenceNative(byte[] address, String Id); |
| private native void cleanupNative(); |
| } |