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      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.support.v4.app.Fragment;
     24 import android.text.method.ScrollingMovementMethod;
     25 import android.view.LayoutInflater;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 import android.widget.TextView;
     29 
     30 import java.util.Locale;
     31 
     32 public class MidiFragment extends Fragment
     33         implements View.OnClickListener, BaseTest.TestStateListener {
     34 
     35     private SimpleLogger logger;
     36     private TextView textView;
     37     private View startMidiInButton;
     38     private View startMidiOutButton;
     39     private HistogramChart latencyChart;
     40     private MidiTest midiTest;
     41 
     42     public MidiFragment() {
     43         // Required empty public constructor
     44     }
     45 
     46     @Override
     47     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     48                              Bundle savedInstanceState) {
     49         logger = SimpleLogger.getInstance(getContext());
     50         midiTest = new MidiTest(getActivity());
     51         midiTest.setTestStateListener(this);
     52 
     53         final View view = inflater.inflate(R.layout.fragment_midi, container, false);
     54         textView = (TextView) view.findViewById(R.id.txt_box_midi);
     55         startMidiInButton = view.findViewById(R.id.button_start_midi_in);
     56         startMidiOutButton = view.findViewById(R.id.button_start_midi_out);
     57         latencyChart = (HistogramChart) view.findViewById(R.id.latency_chart);
     58         textView.setMovementMethod(new ScrollingMovementMethod());
     59         return view;
     60     }
     61 
     62     @Override
     63     public void onResume() {
     64         super.onResume();
     65 
     66         // Register this fragment class as the listener for some button clicks
     67         startMidiInButton.setOnClickListener(this);
     68         startMidiOutButton.setOnClickListener(this);
     69 
     70         textView.setText(logger.getLogText());
     71         logger.registerReceiver(logReceiver);
     72     }
     73 
     74     @Override
     75     public void onPause() {
     76         logger.unregisterReceiver(logReceiver);
     77         super.onPause();
     78     }
     79 
     80     @Override
     81     public void onClick(View v) {
     82         switch (v.getId()) {
     83             case R.id.button_start_midi_in:
     84                 disableButtons();
     85                 latencyChart.setVisibility(View.VISIBLE);
     86                 latencyChart.clearData();
     87                 latencyChart.setLegendEnabled(false);
     88                 latencyChart.getBarChart().getDescription().setText("MIDI Input Latency [ms]");
     89                 midiTest.testMidiIn();
     90                 break;
     91             case R.id.button_start_midi_out:
     92                 disableButtons();
     93                 latencyChart.setVisibility(View.VISIBLE);
     94                 latencyChart.clearData();
     95                 latencyChart.setLegendEnabled(false);
     96                 latencyChart.getBarChart().getDescription().setText("MIDI Output Latency [ms]");
     97                 midiTest.testMidiOut();
     98                 break;
     99         }
    100     }
    101 
    102     private void disableButtons() {
    103         startMidiInButton.setEnabled(false);
    104         startMidiOutButton.setEnabled(false);
    105     }
    106 
    107     private BroadcastReceiver logReceiver = new BroadcastReceiver() {
    108         @Override
    109         public void onReceive(Context context, Intent intent) {
    110             String msg = intent.getStringExtra("message");
    111             textView.append(msg + "\n");
    112         }
    113     };
    114 
    115     @Override
    116     public void onTestStopped() {
    117         if (!midiTest.deltasOutputTotal.isEmpty()) {
    118             latencyChart.setLegendEnabled(true);
    119             latencyChart.setLabel(String.format(
    120                     Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasOutputTotal)));
    121         } else if (!midiTest.deltasInputTotal.isEmpty()) {
    122             latencyChart.setLegendEnabled(true);
    123             latencyChart.setLabel(String.format(
    124                     Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasInputTotal)));
    125         }
    126         LogUploader.uploadIfAutoEnabled(getContext());
    127         startMidiInButton.setEnabled(true);
    128         startMidiOutButton.setEnabled(true);
    129     }
    130 
    131     @Override
    132     public void onTestStoppedWithError() {
    133         onTestStopped();
    134         latencyChart.setVisibility(View.GONE);
    135     }
    136 
    137     @Override
    138     public void onTestPartialResult(double value) {
    139         latencyChart.addEntry(value);
    140     }
    141 
    142     public static boolean hasMidi(Context context) {
    143         return context.getPackageManager().
    144                 hasSystemFeature("android.software.midi");
    145     }
    146 }
    147