Android AppRTCDemo: Add slider for changing camera capture quality during call

webrtc/examples/androidapp/src/org/appspot/apprtc/CallFragment.java

 /*
  *  Copyright 2015 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.appspot.apprtc;
 
 import android.app.Activity;
 import android.app.Fragment;
 import android.os.Bundle;
+import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
+import android.widget.LinearLayout;
+import android.widget.RelativeLayout;
+import android.widget.SeekBar;
 import android.widget.TextView;
 
 import org.webrtc.RendererCommon.ScalingType;
 
 /**
  * Fragment for call control.
  */
 public class CallFragment extends Fragment {
   private View controlView;
   private TextView contactView;
   private ImageButton disconnectButton;
   private ImageButton cameraSwitchButton;
   private ImageButton videoScalingButton;
   private OnCallEvents callEvents;
   private ScalingType scalingType;
   private boolean videoCallEnabled = true;
 
   /**
    * Call control interface for container activity.
    */
   public interface OnCallEvents {
     public void onCallHangUp();
     public void onCameraSwitch();
     public void onVideoScalingSwitch(ScalingType scalingType);
+    public void onCaptureFormatChange(int width, int height, int framerate);
   }
 
   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container,
       Bundle savedInstanceState) {
     controlView =
         inflater.inflate(R.layout.fragment_call, container, false);
 
     // Create UI controls.
     contactView =
@@ skipping 37 matching lines @@
     });
     scalingType = ScalingType.SCALE_ASPECT_FILL;
 
     return controlView;
   }
 
   @Override
   public void onStart() {
     super.onStart();
 
+    boolean captureSliderEnabled = false;
     Bundle args = getArguments();
     if (args != null) {
       String contactName = args.getString(CallActivity.EXTRA_ROOMID);
       contactView.setText(contactName);
       videoCallEnabled = args.getBoolean(CallActivity.EXTRA_VIDEO_CALL, true);
+      captureSliderEnabled = videoCallEnabled
+          && args.getBoolean(CallActivity.EXTRA_VIDEO_CAPTUREQUALITYSLIDER_ENABLED, false);
     }
     if (!videoCallEnabled) {
       cameraSwitchButton.setVisibility(View.INVISIBLE);
     }
+    if (captureSliderEnabled) {
+      final TextView captureFormatText = new TextView(getActivity());

[AlexG, 2015/09/23 23:56:38]

I think it may be better to move most of these properties settings to resource
file fragment_call.xml and made these controls invisible if slider is disabled.

[magjed_webrtc, 2015/09/24 15:08:17]

Done.

+      final SeekBar captureQualitySeekBar = new SeekBar(getActivity());
+      final LinearLayout buttonsContainer =
+          (LinearLayout) controlView.findViewById(R.id.buttons_call_container);
+      captureFormatText.setId(1);
+      captureQualitySeekBar.setId(2);
+
+      final RelativeLayout.LayoutParams textParams =
+          new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
+                                          RelativeLayout.LayoutParams.WRAP_CONTENT);
+      textParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
+      textParams.addRule(RelativeLayout.ABOVE, captureQualitySeekBar.getId());
+      captureFormatText.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16);
+
+      final RelativeLayout.LayoutParams seekBarParams =
+          new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
+                                          RelativeLayout.LayoutParams.WRAP_CONTENT);
+      seekBarParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
+      seekBarParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
+      final int margin32dp = (int) TypedValue.applyDimension(
+          TypedValue.COMPLEX_UNIT_DIP, 32, getResources().getDisplayMetrics());
+      seekBarParams.setMargins(margin32dp, 0, margin32dp, margin32dp);
+      captureQualitySeekBar.setProgress(50);
+
+      final RelativeLayout parentView = (RelativeLayout) buttonsContainer.getParent();
+      parentView.addView(captureFormatText, textParams);
+      parentView.addView(captureQualitySeekBar, seekBarParams);
+
+      RelativeLayout.LayoutParams buttonsContainerParams =
+          (RelativeLayout.LayoutParams) buttonsContainer.getLayoutParams();
+      buttonsContainerParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, 0);
+      buttonsContainerParams.addRule(RelativeLayout.ABOVE, captureFormatText.getId());
+      buttonsContainer.setLayoutParams(buttonsContainerParams);
+
+      captureQualitySeekBar.setOnSeekBarChangeListener(
+          new CaptureQualityController(captureFormatText, callEvents));
+    }
   }
 
   @Override
   public void onAttach(Activity activity) {
     super.onAttach(activity);
     callEvents = (OnCallEvents) activity;
   }
 
 }