DASH stream playback example code

CONNECT-protected DASH playback is implemented in the connect-dash example code as follows.

1. In Android Studio, add the OpVault to the application build project as a project resource.
   The usual SDK initialisation precedes any other SDK access. In MainActivity:

   Java

   OTVSDK.load(this);
   

2. An OTVConnectMediaDrmCallback must be instantiated to be passed to the player:

   Java

   // Adjust string below to match your licence server
   String CONNECT_LICENSE_SERVER = "https://licenseserverurl.com/TENANT_ID/prmls/contentlicenseservice/v1/licenses/";
    
   OTVConnectMediaDrmCallback connectDrmCallback = new OTVConnectMediaDrmCallback(CONNECT_LICENSE_SERVER);
   

3. An instance of OTVConnectMediaDrmCallback needs to be created with the following configuration (which translate to HTTP request header properties:

   Java

   connectDrmCallback.setKeyRequestProperty("Accept", "application/json");
   connectDrmCallback.setKeyRequestProperty("Content-Type", "application/json");
   // Replace the value with the real data.
   connectDrmCallback.setKeyRequestProperty("nv-tenant-id", "--tenant_id--");
   

4. The OpVault must be read from its file, so the following method is provided.

   Java

   private byte[] loadOpVault() {
     // Loading connect_opvault in src/main/res/raw
     try {
       byte[] buffer = new byte[1024 * 4];
       ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
       int bytesRead;
       InputStream opvaultStream = getResources().openRawResource(R.raw.connect_opvault);
       while ((bytesRead = opvaultStream.read(buffer)) != -1) {
         outputStream.write(buffer, 0, bytesRead);
       }
       return outputStream.toByteArray();
     } catch (IOException e) {
       OTVLog.e(TAG, e.getMessage());
       finish();
     }
    return new byte[0];
   }
   

5. The OpVault data is read as a byte array and passed to the callback as a "nagraOpVault" DRM property:

   Java

   byte[] opVault = loadOpVault();
   connectDrmCallback.setDrmPropertyByteArray("nagraOpVault", opVault);
   

6. An OTVVideoView object must be instantiated and attached to a UI frame.

   Java

   setContentView(R.layout.activity_main);
   FrameLayout frame = findViewById(R.id.frame);
   OTVVideoView otvVideoView = new OTVVideoView(this);
   frame.addView(otvVideoView);
   

   For improved functionality, you can add listeners here for player events coming from the OTVVideoView instance (see the example code).

7. Before starting playback, the OTVConnectMediaDrmCallback instance must be configured with the stream's encryption properties; for example:

   Java

   // Replace the values with the real data.
   connectDrmCallback.setKeyRequestProperty("nv-authorizations", "--stream_token--");
   // Set application data if necessary
   connectDrmCallback.setKeyRequestOption("clientData", "thisIsClientData");
   

8. Provide a method for starting playback on the UI thread. In this example, it will be called immediately.

   Java

   private static final String STREAM_URI = "https://cdnurl.com/mystream.m3u8";
    
   private void startPlayback() {
    runOnUiThread(() -> {
      otvVideoView.setVideoPath(STREAM_URI);
      otvVideoView.start();
    });
   }
   

9. Provide the player with the connectDrmCallback  that has been created and configured, and playback can start.

   Java

   otvVVideoView.setMediaDrmCallback(connectDrmCallback);
   startPlayback();