Use Encrypted Video in NativeScript ExoPlayer

We use the nativescript-exoplayer plugin to play videos. We encrypt videos using the attached function, but decrypting them before playback is taking too long. We'd like you to write a custom DataSource in the nativescript-exoplayer plugin to read and play these encrypted files. A custom ExoPlayer DataSource is easy in native Android: [login to view URL] But we need this in the NativeScript Plugin.