LoadErrorHandlingPolicy in DefaultDrmSession/DefaultDrmSessionManager

[kgrevehagen]

Use case description

I don't want to retry 4xx errors for the DRM license key requests, but 5xx errors I would like to retry with exponential backoff, just as it is already done inside DefaultDrmSession.

Proposed solution

Inject a LoadErrorHandlingPolicy to DefaultDrmSession via DefaultDrmSessionManager, similarly to how initialDrmRequestRetryCount is added.

Alternatives considered

• Write own implementation of DrmSession and DrmSessionManager, but I don't want to duplicate all of this logic into my own classes just to change one private method.
• Set initialDrmRequestRetryCount to 0 and handle it myself inside an implementation of MediaDrmCallback, but this feels kinda backwards.

[AquilesCanta]

This should be available in the next release. A commit reference will appear in this issue once the change is pushed to the dev-branch. Once that happens, please give it a try and reach back if you encounter any issues.

[AquilesCanta]

We still need to allow custom implementations.