LE: Add API to configure MTU for a given connection (3/4)
bug:13571470
Change-Id: I3619617eaf864701a35f7802bc71805784d768d0
diff --git a/core/java/android/bluetooth/BluetoothAdapter.java b/core/java/android/bluetooth/BluetoothAdapter.java
index 75b007c..182ef03 100644
--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -2014,5 +2014,13 @@
mAdvertiseCallback.onAdvertiseStop(status);
}
}
+
+ /**
+ * Callback reporting LE ATT MTU.
+ * @hide
+ */
+ public void onConfigureMTU(String address, int mtu, int status) {
+ // no op
+ }
}
}
diff --git a/core/java/android/bluetooth/BluetoothGatt.java b/core/java/android/bluetooth/BluetoothGatt.java
index ae6ad3b..bbd0439 100644
--- a/core/java/android/bluetooth/BluetoothGatt.java
+++ b/core/java/android/bluetooth/BluetoothGatt.java
@@ -561,6 +561,23 @@
public void onAdvertiseStateChange(int state, int status) {
if (DBG) Log.d(TAG, "onAdvertiseStateChange() - state = "
+ state + " status=" + status);
+ }
+
+ /**
+ * Callback invoked when the MTU for a given connection changes
+ * @hide
+ */
+ public void onConfigureMTU(String address, int mtu, int status) {
+ if (DBG) Log.d(TAG, "onConfigureMTU() - Device=" + address +
+ " mtu=" + mtu + " status=" + status);
+ if (!address.equals(mDevice.getAddress())) {
+ return;
+ }
+ try {
+ mCallback.onConfigureMTU(BluetoothGatt.this, mtu, status);
+ } catch (Exception ex) {
+ Log.w(TAG, "Unhandled exception in callback", ex);
+ }
}
};
@@ -1148,6 +1165,36 @@
}
/**
+ * Configure the MTU used for a given connection.
+ *
+ * <p>When performing a write request operation (write without response),
+ * the data sent is truncated to the MTU size. This function may be used
+ * to request a larget MTU size to be able to send more data at once.
+ *
+ * <p>A {@link BluetoothGattCallback#onConfigureMTU} callback will indicate
+ * whether this operation was successful.
+ *
+ * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
+ *
+ * @return true, if the new MTU value has been requested successfully
+ * @hide
+ */
+ public boolean configureMTU(int mtu) {
+ if (DBG) Log.d(TAG, "configureMTU() - device: " + mDevice.getAddress()
+ + " mtu: " + mtu);
+ if (mService == null || mClientIf == 0) return false;
+
+ try {
+ mService.configureMTU(mClientIf, mDevice.getAddress(), mtu);
+ } catch (RemoteException e) {
+ Log.e(TAG,"",e);
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
* Not supported - please use {@link BluetoothManager#getConnectedDevices(int)}
* with {@link BluetoothProfile#GATT} as argument
*
diff --git a/core/java/android/bluetooth/BluetoothGattCallback.java b/core/java/android/bluetooth/BluetoothGattCallback.java
index 80ea4a6..5180259 100644
--- a/core/java/android/bluetooth/BluetoothGattCallback.java
+++ b/core/java/android/bluetooth/BluetoothGattCallback.java
@@ -138,4 +138,19 @@
*/
public void onReadRemoteRssi(BluetoothGatt gatt, int rssi, int status) {
}
+
+ /**
+ * Callback indicating the MTU for a given device connection has changed.
+ *
+ * This callback is triggered in response to the
+ * {@link BluetoothGatt#configureMTU} function, or in response to a connection
+ * event.
+ *
+ * @param gatt GATT client invoked {@link BluetoothGatt#configureMTU}
+ * @param mtu The new MTU size
+ * @param status {@link BluetoothGatt#GATT_SUCCESS} if the MTU has been changed successfully
+ * @hide
+ */
+ public void onConfigureMTU(BluetoothGatt gatt, int mtu, int status) {
+ }
}
diff --git a/core/java/android/bluetooth/IBluetoothGatt.aidl b/core/java/android/bluetooth/IBluetoothGatt.aidl
index 784cdcc..c6b5c3d 100644
--- a/core/java/android/bluetooth/IBluetoothGatt.aidl
+++ b/core/java/android/bluetooth/IBluetoothGatt.aidl
@@ -73,6 +73,7 @@
void beginReliableWrite(in int clientIf, in String address);
void endReliableWrite(in int clientIf, in String address, in boolean execute);
void readRemoteRssi(in int clientIf, in String address);
+ void configureMTU(in int clientIf, in String address, in int mtu);
void registerServer(in ParcelUuid appId, in IBluetoothGattServerCallback callback);
void unregisterServer(in int serverIf);
diff --git a/core/java/android/bluetooth/IBluetoothGattCallback.aidl b/core/java/android/bluetooth/IBluetoothGattCallback.aidl
index 7c69a06..a78c29b 100644
--- a/core/java/android/bluetooth/IBluetoothGattCallback.aidl
+++ b/core/java/android/bluetooth/IBluetoothGattCallback.aidl
@@ -64,4 +64,5 @@
in byte[] value);
void onReadRemoteRssi(in String address, in int rssi, in int status);
oneway void onAdvertiseStateChange(in int advertiseState, in int status);
+ void onConfigureMTU(in String address, in int mtu, in int status);
}