1 files changed, 146 insertions, 0 deletions
diff --git a/android/WALT/app/src/main/java/org/chromium/latency/walt/MidiFragment.java b/android/WALT/app/src/main/java/org/chromium/latency/walt/MidiFragment.java
new file mode 100644
index 0000000..c6f1118
--- /dev/null
+++ b/android/WALT/app/src/main/java/org/chromium/latency/walt/MidiFragment.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.chromium.latency.walt;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.method.ScrollingMovementMethod;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.Locale;
+
+public class MidiFragment extends Fragment
+        implements View.OnClickListener, BaseTest.TestStateListener {
+
+    private SimpleLogger logger;
+    private TextView textView;
+    private View startMidiInButton;
+    private View startMidiOutButton;
+    private HistogramChart latencyChart;
+    private MidiTest midiTest;
+
+    public MidiFragment() {
+        // Required empty public constructor
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        logger = SimpleLogger.getInstance(getContext());
+        midiTest = new MidiTest(getActivity());
+        midiTest.setTestStateListener(this);
+
+        final View view = inflater.inflate(R.layout.fragment_midi, container, false);
+        textView = (TextView) view.findViewById(R.id.txt_box_midi);
+        startMidiInButton = view.findViewById(R.id.button_start_midi_in);
+        startMidiOutButton = view.findViewById(R.id.button_start_midi_out);
+        latencyChart = (HistogramChart) view.findViewById(R.id.latency_chart);
+        textView.setMovementMethod(new ScrollingMovementMethod());
+        return view;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        // Register this fragment class as the listener for some button clicks
+        startMidiInButton.setOnClickListener(this);
+        startMidiOutButton.setOnClickListener(this);
+
+        textView.setText(logger.getLogText());
+        logger.registerReceiver(logReceiver);
+    }
+
+    @Override
+    public void onPause() {
+        logger.unregisterReceiver(logReceiver);
+        super.onPause();
+    }
+
+    @Override
+    public void onClick(View v) {
+        switch (v.getId()) {
+            case R.id.button_start_midi_in:
+                disableButtons();
+                latencyChart.setVisibility(View.VISIBLE);
+                latencyChart.clearData();
+                latencyChart.setLegendEnabled(false);
+                latencyChart.getBarChart().getDescription().setText("MIDI Input Latency [ms]");
+                midiTest.testMidiIn();
+                break;
+            case R.id.button_start_midi_out:
+                disableButtons();
+                latencyChart.setVisibility(View.VISIBLE);
+                latencyChart.clearData();
+                latencyChart.setLegendEnabled(false);
+                latencyChart.getBarChart().getDescription().setText("MIDI Output Latency [ms]");
+                midiTest.testMidiOut();
+                break;
+        }
+    }
+
+    private void disableButtons() {
+        startMidiInButton.setEnabled(false);
+        startMidiOutButton.setEnabled(false);
+    }
+
+    private BroadcastReceiver logReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String msg = intent.getStringExtra("message");
+            textView.append(msg + "\n");
+        }
+    };
+
+    @Override
+    public void onTestStopped() {
+        if (!midiTest.deltasOutputTotal.isEmpty()) {
+            latencyChart.setLegendEnabled(true);
+            latencyChart.setLabel(String.format(
+                    Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasOutputTotal)));
+        } else if (!midiTest.deltasInputTotal.isEmpty()) {
+            latencyChart.setLegendEnabled(true);
+            latencyChart.setLabel(String.format(
+                    Locale.US, "Median=%.1f ms", Utils.median(midiTest.deltasInputTotal)));
+        }
+        LogUploader.uploadIfAutoEnabled(getContext());
+        startMidiInButton.setEnabled(true);
+        startMidiOutButton.setEnabled(true);
+    }
+
+    @Override
+    public void onTestStoppedWithError() {
+        onTestStopped();
+        latencyChart.setVisibility(View.GONE);
+    }
+
+    @Override
+    public void onTestPartialResult(double value) {
+        latencyChart.addEntry(value);
+    }
+
+    public static boolean hasMidi(Context context) {
+        return context.getPackageManager().
+                hasSystemFeature("android.software.midi");
+    }
+}