1*90c8c64dSAndroid Build Coastguard Worker /* 2*90c8c64dSAndroid Build Coastguard Worker * Copyright (C) 2015 The Android Open Source Project 3*90c8c64dSAndroid Build Coastguard Worker * 4*90c8c64dSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*90c8c64dSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*90c8c64dSAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*90c8c64dSAndroid Build Coastguard Worker * 8*90c8c64dSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*90c8c64dSAndroid Build Coastguard Worker * 10*90c8c64dSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*90c8c64dSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*90c8c64dSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*90c8c64dSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*90c8c64dSAndroid Build Coastguard Worker * limitations under the License. 15*90c8c64dSAndroid Build Coastguard Worker */ 16*90c8c64dSAndroid Build Coastguard Worker 17*90c8c64dSAndroid Build Coastguard Worker package com.example.android.midiscope; 18*90c8c64dSAndroid Build Coastguard Worker 19*90c8c64dSAndroid Build Coastguard Worker import android.media.midi.MidiReceiver; 20*90c8c64dSAndroid Build Coastguard Worker import android.util.Log; 21*90c8c64dSAndroid Build Coastguard Worker 22*90c8c64dSAndroid Build Coastguard Worker import java.io.IOException; 23*90c8c64dSAndroid Build Coastguard Worker import java.util.concurrent.TimeUnit; 24*90c8c64dSAndroid Build Coastguard Worker 25*90c8c64dSAndroid Build Coastguard Worker /** 26*90c8c64dSAndroid Build Coastguard Worker * Convert incoming MIDI messages to a string and write them to a ScopeLogger. 27*90c8c64dSAndroid Build Coastguard Worker * Assume that messages have been aligned using a MidiFramer. 28*90c8c64dSAndroid Build Coastguard Worker */ 29*90c8c64dSAndroid Build Coastguard Worker public class LoggingReceiver extends MidiReceiver { 30*90c8c64dSAndroid Build Coastguard Worker public static final String TAG = "MidiScope"; 31*90c8c64dSAndroid Build Coastguard Worker private static final long NANOS_PER_SECOND = TimeUnit.SECONDS.toNanos(1); 32*90c8c64dSAndroid Build Coastguard Worker private long mStartTime; 33*90c8c64dSAndroid Build Coastguard Worker private ScopeLogger mLogger; 34*90c8c64dSAndroid Build Coastguard Worker LoggingReceiver(ScopeLogger logger)35*90c8c64dSAndroid Build Coastguard Worker public LoggingReceiver(ScopeLogger logger) { 36*90c8c64dSAndroid Build Coastguard Worker mStartTime = System.nanoTime(); 37*90c8c64dSAndroid Build Coastguard Worker mLogger = logger; 38*90c8c64dSAndroid Build Coastguard Worker } 39*90c8c64dSAndroid Build Coastguard Worker 40*90c8c64dSAndroid Build Coastguard Worker /* 41*90c8c64dSAndroid Build Coastguard Worker * @see android.media.midi.MidiReceiver#onReceive(byte[], int, int, long) 42*90c8c64dSAndroid Build Coastguard Worker */ 43*90c8c64dSAndroid Build Coastguard Worker @Override onSend(byte[] data, int offset, int count, long timestamp)44*90c8c64dSAndroid Build Coastguard Worker public void onSend(byte[] data, int offset, int count, long timestamp) 45*90c8c64dSAndroid Build Coastguard Worker throws IOException { 46*90c8c64dSAndroid Build Coastguard Worker StringBuilder sb = new StringBuilder(); 47*90c8c64dSAndroid Build Coastguard Worker if (timestamp == 0) { 48*90c8c64dSAndroid Build Coastguard Worker sb.append(String.format("-----0----: ")); 49*90c8c64dSAndroid Build Coastguard Worker } else { 50*90c8c64dSAndroid Build Coastguard Worker long monoTime = timestamp - mStartTime; 51*90c8c64dSAndroid Build Coastguard Worker double seconds = (double) monoTime / NANOS_PER_SECOND; 52*90c8c64dSAndroid Build Coastguard Worker sb.append(String.format("%10.3f: ", seconds)); 53*90c8c64dSAndroid Build Coastguard Worker } 54*90c8c64dSAndroid Build Coastguard Worker sb.append(MidiPrinter.formatBytes(data, offset, count)); 55*90c8c64dSAndroid Build Coastguard Worker sb.append(": "); 56*90c8c64dSAndroid Build Coastguard Worker sb.append(MidiPrinter.formatMessage(data, offset, count)); 57*90c8c64dSAndroid Build Coastguard Worker String text = sb.toString(); 58*90c8c64dSAndroid Build Coastguard Worker mLogger.log(text); 59*90c8c64dSAndroid Build Coastguard Worker Log.i(TAG, text); 60*90c8c64dSAndroid Build Coastguard Worker } 61*90c8c64dSAndroid Build Coastguard Worker 62*90c8c64dSAndroid Build Coastguard Worker }