1 /* 2 * Copyright (C) 2016 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 17 package org.chromium.latency.walt; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.os.Bundle; 23 import android.text.method.ScrollingMovementMethod; 24 import android.view.LayoutInflater; 25 import android.view.View; 26 import android.view.ViewGroup; 27 import android.widget.TextView; 28 29 import androidx.fragment.app.Fragment; 30 31 import java.util.Locale; 32 33 public class MidiFragment extends Fragment 34 implements View.OnClickListener, BaseTest.TestStateListener { 35 36 private SimpleLogger logger; 37 private TextView textView; 38 private View startMidiInButton; 39 private View startMidiOutButton; 40 private HistogramChart latencyChart; 41 private MidiTest midiTest; 42 MidiFragment()43 public MidiFragment() { 44 // Required empty public constructor 45 } 46 47 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)48 public View onCreateView(LayoutInflater inflater, ViewGroup container, 49 Bundle savedInstanceState) { 50 logger = SimpleLogger.getInstance(getContext()); 51 midiTest = new MidiTest(getActivity()); 52 midiTest.setTestStateListener(this); 53 54 final View view = inflater.inflate(R.layout.fragment_midi, container, false); 55 textView = (TextView) view.findViewById(R.id.txt_box_midi); 56 startMidiInButton = view.findViewById(R.id.button_start_midi_in); 57 startMidiOutButton = view.findViewById(R.id.button_start_midi_out); 58 latencyChart = (HistogramChart) view.findViewById(R.id.latency_chart); 59 textView.setMovementMethod(new ScrollingMovementMethod()); 60 return view; 61 } 62 63 @Override onResume()64 public void onResume() { 65 super.onResume(); 66 67 // Register this fragment class as the listener for some button clicks 68 startMidiInButton.setOnClickListener(this); 69 startMidiOutButton.setOnClickListener(this); 70 71 textView.setText(logger.getLogText()); 72 logger.registerReceiver(logReceiver); 73 } 74 75 @Override onPause()76 public void onPause() { 77 logger.unregisterReceiver(logReceiver); 78 super.onPause(); 79 } 80 81 @Override onClick(View v)82 public void onClick(View v) { 83 switch (v.getId()) { 84 case R.id.button_start_midi_in: 85 disableButtons(); 86 latencyChart.setVisibility(View.VISIBLE); 87 latencyChart.clearData(); 88 latencyChart.setLegendEnabled(false); 89 latencyChart.getBarChart().getDescription().setText("MIDI Input Latency [ms]"); 90 midiTest.testMidiIn(); 91 break; 92 case R.id.button_start_midi_out: 93 disableButtons(); 94 latencyChart.setVisibility(View.VISIBLE); 95 latencyChart.clearData(); 96 latencyChart.setLegendEnabled(false); 97 latencyChart.getBarChart().getDescription().setText("MIDI Output Latency [ms]"); 98 midiTest.testMidiOut(); 99 break; 100 } 101 } 102 disableButtons()103 private void disableButtons() { 104 startMidiInButton.setEnabled(false); 105 startMidiOutButton.setEnabled(false); 106 } 107 108 private BroadcastReceiver logReceiver = new BroadcastReceiver() { 109 @Override 110 public void onReceive(Context context, Intent intent) { 111 String msg = intent.getStringExtra("message"); 112 textView.append(msg + "\n"); 113 } 114 }; 115 116 @Override onTestStopped()117 public void onTestStopped() { 118 if (!midiTest.deltasOutputTotal.isEmpty()) { 119 latencyChart.setLegendEnabled(true); 120 latencyChart.setLabel(String.format( 121 Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasOutputTotal))); 122 } else if (!midiTest.deltasInputTotal.isEmpty()) { 123 latencyChart.setLegendEnabled(true); 124 latencyChart.setLabel(String.format( 125 Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasInputTotal))); 126 } 127 LogUploader.uploadIfAutoEnabled(getContext()); 128 startMidiInButton.setEnabled(true); 129 startMidiOutButton.setEnabled(true); 130 } 131 132 @Override onTestStoppedWithError()133 public void onTestStoppedWithError() { 134 onTestStopped(); 135 latencyChart.setVisibility(View.GONE); 136 } 137 138 @Override onTestPartialResult(double value)139 public void onTestPartialResult(double value) { 140 latencyChart.addEntry(value); 141 } 142 hasMidi(Context context)143 public static boolean hasMidi(Context context) { 144 return context.getPackageManager(). 145 hasSystemFeature("android.software.midi"); 146 } 147 } 148