1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.bluetoothmidiservice;
18
19import android.media.midi.MidiReceiver;
20
21/**
22 * This is an abstract base class that encodes MIDI data into a packet buffer.
23 * PacketEncoder receives data via its {@link android.media.midi.MidiReceiver#onReceive} method
24 * and notifies its client of packets to write via the {@link PacketEncoder.PacketReceiver}
25 * interface.
26 */
27public abstract class PacketEncoder extends MidiReceiver {
28
29    public interface PacketReceiver {
30        /** Called to write an accumulated packet.
31         * @param buffer the packet buffer to write
32         * @param count the number of bytes in the packet buffer to write
33         */
34        public void writePacket(byte[] buffer, int count);
35    }
36
37    /**
38     * Called to inform PacketEncoder when the previous write is complete.
39     */
40    abstract public void writeComplete();
41}
42