commit 580b0a13028ed2187964735a5515d87900d241ce
author Andre Eisenbach <andre@broadcom.com> Tue Mar 25 06:31:50 2014 -0700
committer Zhihai Xu <zhihaixu@google.com> Tue Mar 25 18:02:06 2014 -0700
tree cbcc3ecd7adee892eab7e42208ab0bb235005e04
parent 04ea3ca000312f4eccc44347c37c49471081b852

LE: Add API to configure MTU for a given connection (3/4)

bug:13571470
Change-Id: I3619617eaf864701a35f7802bc71805784d768d0

core/java/android/bluetooth/BluetoothGatt.java

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
      *