Adding playback of Widevine encrypted content

To add playback of Widevine encrypted content to the player:

1. Add the dependency com.google.protobuf:protobuf-lite:3.0.1:

   GROOVY

       dependencies {
          implementation fileTree(dir: 'libs', include: ['*.aar'])
          implementation 'androidx.appcompat:appcompat:1.4.1'
          implementation 'com.google.protobuf:protobuf-lite:3.0.1'
        }

2. In the MainActivity.java file, add the following imports :

   JAVA

       import java.util.HashMap;
       import java.util.Map;
       import nagra.otv.sdk.OTVVideoView;
       import nagra.otv.sdk.drm.OTVHttpMediaDrmCallback;

3. Replace the following code:

   JAVA

       static final String TAG = "MainActivity";
           private OTVVideoView mOTVVideoView = null;
           private int mPausePos = 0;
           private String mVideoURI = "https://d3bqrzf9w11pn3.cloudfront.net/basic_dash_bbb_clear/bbb_public.mpd";
   
           @Override
           protected void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);
               OTVSDK.load(this);
               setContentView(R.layout.activity_main);
               mOTVVideoView = findViewById(R.id.otvVideoView);
           }
   
           @Override
           public boolean onCreateOptionsMenu(Menu menu) {
               // Inflate the menu; this adds items to the action bar if it is present.
               getMenuInflater().inflate(R.menu.menu_main, menu);
               return true;
           }
   
   

   With:

   JAVA

       private OTVVideoView mOTVVideoView = null;
       private int mPausePos = 0;
       private final String STREAM_URI = "https://d3bqrzf9w11pn3.cloudfront.net/basic_dash_bbb_encrypted/bbb_public_android.mpd";
       private final String STREAM_TOKEN = "eyJraWQiOiI4MTI0MjUiLCJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.fZpotjTjiddueE_nPVcON0FnJwBO4FecTcYIoMmocnw,eyJrY0lkcyI6WyIwMjA4MTEzZS1lNmU4LTQyNDItODY3Yy1kOTYzZjVkNzg5MjMiXSwidHlwIjoiSldUIiwiZW5jIjoiQTEyOENCQy1IUzI1NiIsImFsZyI6ImRpciIsImtpZCI6IjgxMjQyNSJ9..ntJUOAc-g8sXrGLjZhx-MQ.nHnm-aciNeCz6kwUZEjOQgg-1PsLN1Uc8eYihUv_OUK8EaBoFH7JcdIyB9igEFfR9Cufau_5H-EvTdrmws20_ViWKjUTOZmUn7xPQOmwSftb99-rgd3g4QZO0quHIDB5qiBoKmksts8qDbcMZbr_aKMFIOlzNUUcBwiOvmrGyzo.-zTh5sY7tmbe7Ow94EQT9A";
       // The URI for PlayReady servers is different. In the example below replace wvls with prls  
       private final String DRM_URI = "https://vsd02fy1.anycast.nagra.com/VSD02FY1/wvls/contentlicenseservice/v1/licenses";
       private final Map<String, String> DRM_HEADERS = new HashMap<>();
       {
         // Server headers
         // For PlayReady DRM servers, the 'Accept' and 'Content-Type' headers must be set to 'text/xml' instead.
         DRM_HEADERS.put("Accept", "application/octet-stream");
         DRM_HEADERS.put("Content-Type", "application/octet-stream");
         DRM_HEADERS.put("nv-tenant-id", "UEX3XJ0I");
       }
       @Override
       protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         mOTVVideoView = findViewById(R.id.otvVideoView);
         mOTVVideoView.setMediaDrmCallback(mDrmCallback);
         mOTVVideoView.setVideoPath(STREAM_URI);
       }
       private OTVHttpMediaDrmCallback mDrmCallback = new OTVHttpMediaDrmCallback(DRM_URI);
       {
         for (Map.Entry<String, String> pair : DRM_HEADERS.entrySet()) {
           mDrmCallback.setKeyRequestProperty(pair.getKey(), pair.getValue());
         }
         mDrmCallback.setKeyRequestProperty("nv-authorizations", STREAM_TOKEN);
         // For PlayReady protected content, un-comment the line below to explicitly specify PlayReady DRM.
         // mDrmCallback.setDrmType(OTVMediaDrmCallback.OTV_DRMTYPE_PLAYREADY);
       }