Offline Core Business metadata management

[defagos]

Description

As a developer integrating Pillarbox I would like to be able to download URN-based content provided by Core Business.

Hints

See #1115 for preliminary investigations.

Acceptance criteria

• An API is provided to start a download including metadata retrieval first.
• URNs can be downloaded.
• A download can be started when no player is available (and possibly also using convenience APIs when a player is actually playing an item).
• Metadata is persisted so that offline playback of such content is possible.
• Images are retrieved as well (main artwork, chapters).
• Blocked time ranges cannot be played.
• Chapters are displayed.
• Title and artwork are displayed when managing storage from the Settings app.
• Tracking works when playing offline.
• The demo app plays the offline content if available.
• DRM/token-protected content is not supported yet (done in Offline playback for FairPlay-protected content #1431).
• The integration works on iOS only.

Tasks

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