When playing most files, the DataSource open function is called once and everything is fine.

When playing Opus in an Ogg container the DataSource open function is called at least 3 times.

DataSpec[GET uuid://3dae8470-ee1e-402c-b485-fb6bbfd424cc, 0, -1, null, 6]
DataSpec[GET uuid://3dae8470-ee1e-402c-b485-fb6bbfd424cc, 7772581, -1, null, 6]
DataSpec[GET uuid://3dae8470-ee1e-402c-b485-fb6bbfd424cc, 1628, -1, null, 6]

Since the source is opened then closed 3 times in some cases this is very costly, it seems there's no solution in ExoPlayer to support seeking and optimize the sources, I wonder if there's some solutions already present to optimize this case ?

Is there a way to detect and know there will be the need for multiple open / close ? The goal is to find a way to cache things at a lower level (relatively easy) but without adding some arbitrary duration as we can't rely on the close calls to clear the cache.