getDuration method
Returns the duration of the media, in milliseconds, if available.
Might not be available if:
- source has not been set or prepared yet (for remote audios it must be downloaded and buffered first)
- source does not support operation (e.g. streams)
- otherwise not supported (e.g. LOW_LATENCY mode on Android)
Implementation
@override
Future<int?> getDuration(String playerId) {
return _compute('getDuration', playerId);
}