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Commit d11e59ec authored by Phil Burk's avatar Phil Burk Committed by Glenn Kasten
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BluetoothMidiDevice: change write type to support JamStik 



Temporarily use a Request instead of a Command so that the JamStik
will be properly enabled.

Bug: 24207964
Change-Id: I3d11732958c46e6039405b5969d5af0db8032fb9
Signed-off-by: default avatarPhil Burk <philburk@google.com>
(cherry picked from commit 95129f50)
parent ff23e1b4

media/packages/BluetoothMidiService/src/com/android/bluetoothmidiservice/BluetoothMidiDevice.java

+9 −1
Original line number Original line Diff line number Diff line
@@ -147,14 +147,22 @@ public final class BluetoothMidiDevice { 
            // switch to receiving notifications after initial characteristic read

            // switch to receiving notifications after initial characteristic read

            mBluetoothGatt.setCharacteristicNotification(characteristic, true);

            mBluetoothGatt.setCharacteristicNotification(characteristic, true);





            // Use writeType that requests acknowledgement.

            // This improves compatibility with various BLE-MIDI devices.

            int originalWriteType = characteristic.getWriteType();

            characteristic.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT);



            BluetoothGattDescriptor descriptor = characteristic.getDescriptor(

            BluetoothGattDescriptor descriptor = characteristic.getDescriptor(

                    CLIENT_CHARACTERISTIC_CONFIG);

                    CLIENT_CHARACTERISTIC_CONFIG);

            if (descriptor != null) {

            if (descriptor != null) {

                descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);

                descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);

                mBluetoothGatt.writeDescriptor(descriptor);

                boolean result = mBluetoothGatt.writeDescriptor(descriptor);

                Log.d(TAG, "writeDescriptor returned " + result);

            } else {

            } else {

                Log.e(TAG, "No CLIENT_CHARACTERISTIC_CONFIG for device " + mBluetoothDevice);

                Log.e(TAG, "No CLIENT_CHARACTERISTIC_CONFIG for device " + mBluetoothDevice);

            }

            }



            characteristic.setWriteType(originalWriteType);

        }

        }





        @Override

        @Override