Read QOS playback, buffering, and device statistics

You can read playback, buffering, and device statistics from the QOSProvider class.

The QOSProvider class provides various statistics, including information about buffering, bit rates, frame rates, time data, and so on.

It also provides information about the device, such as the manufacturer, model, operating system, SDK version, manufacturer’s device ID, and screen size/density.

1. Instantiate a media player.

2. Create a QOSProvider object and attach it to the media player.

   The QOSProvider constructor takes a player context so that it can retrieve device-specific information.

   // Create Media Player. 
   _mediaQosProvider = new QOSProvider(getActivity().getApplicationContext()); 
   _mediaQosProvider.attachMediaPlayer(_mediaPlayer);
   

3. (Optional) Read the playback statistics.

   One solution to read playback statistics is to have a timer, that periodically fetches the new QoS values from the QOSProvider. For example:

   _playbackClock = new Clock(PLAYBACK_CLOCK, 1000); // every 1 second 
    
   _playbackClockEventListener = new Clock.ClockEventListener() { 
       @Override 
       public void onTick(String name) { 
           getActivity().runOnUiThread(new Runnable() { 
               @Override 
               public void run() { 
                   PlaybackInformation playbackInformation = _mediaQosProvider.getPlaybackInformation();  
                   setQosItem("Frame rate", (int) playbackInformation.getFrameRate());  
                   setQosItem("Dropped frames", (int) playbackInformation.getDroppedFrameCount()); 
                   setQosItem("Bitrate", (int) playbackInformation.getBitrate()); 
                   setQosItem("Buffering time", (int) playbackInformation.getBufferingTime());  
                   setQosItem("Buffer length", (int) playbackInformation.getBufferLength());  
                   setQosItem("Buffer time", (int) playbackInformation.getBufferTime());  
                   setQosItem("Empty buffer count", (int) playbackInformation.getEmptyBufferCount());  
                   setQosItem("Time to load", (int) playbackInformation.getTimeToLoad());  
                   setQosItem("Time to start", (int) playbackInformation.getTimeToStart()); 
                   setQosItem("Time to prepare", (int) playbackInformation.getTimeToPrepare()); 
                   setQosItem("Perceived Bandwidth", (int) playbackInformation.getPerceivedBandwidth());   
                   playbackInformation.getPerceivedBandwidth()); 
               } 
           }); 
       }; 
   }; 
   
   

4. (Optional) Read the device-specific information.

   // Show device information 
   DeviceInformation deviceInfo =  
     new QOSProvider(parent.getApplicationContext()).getDeviceInformation(); 
   tv = (TextView) view.findViewById(R.id.aboutDeviceModel); 
   tv.setText(parent.getString(R.string.aboutDeviceModel) + " " +  
     deviceInfo.getManufacturer() + " - " + deviceInfo.getModel()); 
    
   tv = (TextView) view.findViewById(R.id.aboutDeviceSoftware); 
   tv.setText(parent.getString(R.string.aboutDeviceSoftware) + " " +  
     deviceInfo.getOS() + ", SDK: " + deviceInfo.getSDK()); 
    
   tv = (TextView) view.findViewById(R.id.aboutDeviceResolutin); 
   String orientation = parent.getResources().getConfiguration().orientation ==  
     Configuration.ORIENTATION_LANDSCAPE ? "landscape" : "portrait"; 
   tv.setText(parent.getString(R.string.aboutDeviceResolution) + " " +  
     deviceInfo.getWidthPixels() + "x" + deviceInfo.getHeightPixels() +  
     " (" + orientation + ")");