1 files changed, 339 insertions, 0 deletions
diff --git a/examples/androidvoip/java/org/webrtc/examples/androidvoip/MainActivity.java b/examples/androidvoip/java/org/webrtc/examples/androidvoip/MainActivity.java
new file mode 100644
index 0000000000..d787de59a0
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+++ b/examples/androidvoip/java/org/webrtc/examples/androidvoip/MainActivity.java
@@ -0,0 +1,339 @@
+/*
+ *  Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc.examples.androidvoip;
+
+import android.Manifest.permission;
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.view.Gravity;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.RelativeLayout;
+import android.widget.ScrollView;
+import android.widget.Spinner;
+import android.widget.Switch;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.widget.ToggleButton;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.webrtc.ContextUtils;
+
+public class MainActivity extends Activity implements OnVoipClientTaskCompleted {
+  private static final int NUM_SUPPORTED_CODECS = 6;
+
+  private VoipClient voipClient;
+  private List<String> supportedCodecs;
+  private boolean[] isDecoderSelected;
+  private Set<Integer> selectedDecoders;
+
+  private Toast toast;
+  private ScrollView scrollView;
+  private TextView localIPAddressTextView;
+  private EditText localPortNumberEditText;
+  private EditText remoteIPAddressEditText;
+  private EditText remotePortNumberEditText;
+  private Spinner encoderSpinner;
+  private Button decoderSelectionButton;
+  private TextView decodersTextView;
+  private ToggleButton sessionButton;
+  private RelativeLayout switchLayout;
+  private Switch sendSwitch;
+  private Switch playoutSwitch;
+
+  @Override
+  protected void onCreate(Bundle savedInstance) {
+    ContextUtils.initialize(getApplicationContext());
+
+    super.onCreate(savedInstance);
+    setContentView(R.layout.activity_main);
+
+    System.loadLibrary("examples_androidvoip_jni");
+
+    voipClient = new VoipClient(getApplicationContext(), this);
+    voipClient.getAndSetUpLocalIPAddress();
+    voipClient.getAndSetUpSupportedCodecs();
+
+    isDecoderSelected = new boolean[NUM_SUPPORTED_CODECS];
+    selectedDecoders = new HashSet<>();
+
+    toast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
+
+    scrollView = (ScrollView) findViewById(R.id.scroll_view);
+    localIPAddressTextView = (TextView) findViewById(R.id.local_ip_address_text_view);
+    localPortNumberEditText = (EditText) findViewById(R.id.local_port_number_edit_text);
+    remoteIPAddressEditText = (EditText) findViewById(R.id.remote_ip_address_edit_text);
+    remotePortNumberEditText = (EditText) findViewById(R.id.remote_port_number_edit_text);
+    encoderSpinner = (Spinner) findViewById(R.id.encoder_spinner);
+    decoderSelectionButton = (Button) findViewById(R.id.decoder_selection_button);
+    decodersTextView = (TextView) findViewById(R.id.decoders_text_view);
+    sessionButton = (ToggleButton) findViewById(R.id.session_button);
+    switchLayout = (RelativeLayout) findViewById(R.id.switch_layout);
+    sendSwitch = (Switch) findViewById(R.id.start_send_switch);
+    playoutSwitch = (Switch) findViewById(R.id.start_playout_switch);
+
+    setUpSessionButton();
+    setUpSendAndPlayoutSwitch();
+  }
+
+  private void setUpEncoderSpinner(List<String> supportedCodecs) {
+    ArrayAdapter<String> encoderAdapter =
+        new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, supportedCodecs);
+    encoderAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+    encoderSpinner.setAdapter(encoderAdapter);
+    encoderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+      @Override
+      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+        voipClient.setEncoder((String) parent.getSelectedItem());
+      }
+      @Override
+      public void onNothingSelected(AdapterView<?> parent) {}
+    });
+  }
+
+  private List<String> getSelectedDecoders() {
+    List<String> decoders = new ArrayList<>();
+    for (int i = 0; i < supportedCodecs.size(); i++) {
+      if (selectedDecoders.contains(i)) {
+        decoders.add(supportedCodecs.get(i));
+      }
+    }
+    return decoders;
+  }
+
+  private void setUpDecoderSelectionButton(List<String> supportedCodecs) {
+    decoderSelectionButton.setOnClickListener((view) -> {
+      AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
+      dialogBuilder.setTitle(R.string.dialog_title);
+
+      // Populate multi choice items with supported decoders.
+      String[] supportedCodecsArray = supportedCodecs.toArray(new String[0]);
+      dialogBuilder.setMultiChoiceItems(
+          supportedCodecsArray, isDecoderSelected, (dialog, position, isChecked) -> {
+            if (isChecked) {
+              selectedDecoders.add(position);
+            } else if (!isChecked) {
+              selectedDecoders.remove(position);
+            }
+          });
+
+      // "Ok" button.
+      dialogBuilder.setPositiveButton(R.string.ok_label, (dialog, position) -> {
+        List<String> decoders = getSelectedDecoders();
+        String result = decoders.stream().collect(Collectors.joining(", "));
+        if (result.isEmpty()) {
+          decodersTextView.setText(R.string.decoders_text_view_default);
+        } else {
+          decodersTextView.setText(result);
+        }
+        voipClient.setDecoders(decoders);
+      });
+
+      // "Dismiss" button.
+      dialogBuilder.setNegativeButton(
+          R.string.dismiss_label, (dialog, position) -> { dialog.dismiss(); });
+
+      // "Clear All" button.
+      dialogBuilder.setNeutralButton(R.string.clear_all_label, (dialog, position) -> {
+        Arrays.fill(isDecoderSelected, false);
+        selectedDecoders.clear();
+        decodersTextView.setText(R.string.decoders_text_view_default);
+      });
+
+      AlertDialog dialog = dialogBuilder.create();
+      dialog.show();
+    });
+  }
+
+  private void setUpSessionButton() {
+    sessionButton.setOnCheckedChangeListener((button, isChecked) -> {
+      // Ask for permission on RECORD_AUDIO if not granted.
+      if (ContextCompat.checkSelfPermission(this, permission.RECORD_AUDIO)
+          != PackageManager.PERMISSION_GRANTED) {
+        String[] sList = {permission.RECORD_AUDIO};
+        ActivityCompat.requestPermissions(this, sList, 1);
+      }
+
+      if (isChecked) {
+        // Order matters here, addresses have to be set before starting session
+        // before setting codec.
+        voipClient.setLocalAddress(localIPAddressTextView.getText().toString(),
+            Integer.parseInt(localPortNumberEditText.getText().toString()));
+        voipClient.setRemoteAddress(remoteIPAddressEditText.getText().toString(),
+            Integer.parseInt(remotePortNumberEditText.getText().toString()));
+        voipClient.startSession();
+        voipClient.setEncoder((String) encoderSpinner.getSelectedItem());
+        voipClient.setDecoders(getSelectedDecoders());
+      } else {
+        voipClient.stopSession();
+      }
+    });
+  }
+
+  private void setUpSendAndPlayoutSwitch() {
+    sendSwitch.setOnCheckedChangeListener((button, isChecked) -> {
+      if (isChecked) {
+        voipClient.startSend();
+      } else {
+        voipClient.stopSend();
+      }
+    });
+
+    playoutSwitch.setOnCheckedChangeListener((button, isChecked) -> {
+      if (isChecked) {
+        voipClient.startPlayout();
+      } else {
+        voipClient.stopPlayout();
+      }
+    });
+  }
+
+  private void setUpIPAddressEditTexts(String localIPAddress) {
+    if (localIPAddress.isEmpty()) {
+      showToast("Please check your network configuration");
+    } else {
+      localIPAddressTextView.setText(localIPAddress);
+      // By default remote IP address is the same as local IP address.
+      remoteIPAddressEditText.setText(localIPAddress);
+    }
+  }
+
+  private void showToast(String message) {
+    toast.cancel();
+    toast = Toast.makeText(this, message, Toast.LENGTH_SHORT);
+    toast.setGravity(Gravity.TOP, 0, 200);
+    toast.show();
+  }
+
+  @Override
+  protected void onDestroy() {
+    voipClient.close();
+    voipClient = null;
+
+    super.onDestroy();
+  }
+
+  @Override
+  public void onGetLocalIPAddressCompleted(String localIPAddress) {
+    runOnUiThread(() -> { setUpIPAddressEditTexts(localIPAddress); });
+  }
+
+  @Override
+  public void onGetSupportedCodecsCompleted(List<String> supportedCodecs) {
+    runOnUiThread(() -> {
+      this.supportedCodecs = supportedCodecs;
+      setUpEncoderSpinner(supportedCodecs);
+      setUpDecoderSelectionButton(supportedCodecs);
+    });
+  }
+
+  @Override
+  public void onVoipClientInitializationCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (!isSuccessful) {
+        showToast("Error initializing audio device");
+      }
+    });
+  }
+
+  @Override
+  public void onStartSessionCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Session started");
+        switchLayout.setVisibility(View.VISIBLE);
+        scrollView.post(() -> { scrollView.fullScroll(ScrollView.FOCUS_DOWN); });
+      } else {
+        showToast("Failed to start session");
+      }
+    });
+  }
+
+  @Override
+  public void onStopSessionCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Session stopped");
+        // Set listeners to null so the checked state can be changed programmatically.
+        sendSwitch.setOnCheckedChangeListener(null);
+        playoutSwitch.setOnCheckedChangeListener(null);
+        sendSwitch.setChecked(false);
+        playoutSwitch.setChecked(false);
+        // Redo the switch listener setup.
+        setUpSendAndPlayoutSwitch();
+        switchLayout.setVisibility(View.GONE);
+      } else {
+        showToast("Failed to stop session");
+      }
+    });
+  }
+
+  @Override
+  public void onStartSendCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Started sending");
+      } else {
+        showToast("Error initializing microphone");
+      }
+    });
+  }
+
+  @Override
+  public void onStopSendCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Stopped sending");
+      } else {
+        showToast("Microphone termination failed");
+      }
+    });
+  }
+
+  @Override
+  public void onStartPlayoutCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Started playout");
+      } else {
+        showToast("Error initializing speaker");
+      }
+    });
+  }
+
+  @Override
+  public void onStopPlayoutCompleted(boolean isSuccessful) {
+    runOnUiThread(() -> {
+      if (isSuccessful) {
+        showToast("Stopped playout");
+      } else {
+        showToast("Speaker termination failed");
+      }
+    });
+  }
+
+  @Override
+  public void onUninitializedVoipClient() {
+    runOnUiThread(() -> { showToast("Voip client is uninitialized"); });
+  }
+}