Basic Engine Features

Broadcast programme is scheduled via Dashboard/Steering. Possibility to mix / switch between 3 different audio sources:

1. Play playlists from filesystem (audio files are provided via Tank)
2. Play external audio streams
3. Play live audio

Other:

• Playlists should be played without any delay, even when the individual items are extremely short e.g. Jingles, sound effects (compare Radio Freistadt)
• Include RDS information for UKW/terrestrial broadcasts (this is solved by a separate Ticket https://gitlab.servus.at/aura/engine/-/issues/22)
• Ability to broadcast to IceCast streaming server
• Configurable Audio quality
• Support 4 or more Stereo-In channels (e.g. Studio 1, Studio 2, BBC, Satellite, Tuner)
• Extensive logging

Open Sub-Tasks:

• File System Scheduling and correct Playout, Transitioning, Engine Core refactoring
• Fix sidecase with parallel playout.
• Fix Volume issues when switching between Playlist Entries
• Check if all cases for "end of schedule" and "end of entry" are working as expected.
• Configurable Logger with Log Levels. Update Logs with adequate Log Level.
• Test scheduling with Analog IN Entries, multiple Analog INs, correct scheduling and play-out in the mix
• Test scheduling with Stream Entries, multiple Streams, correct scheduling and play-out in the mix
• Stream output, Check settings for IceCast connectivity, Test and possible fixes
• Test very short and very long filesystem entries and correct timings with those. Most likely this requires another major refactoring to allow pre-scheduling. Currently unsure how to get this done with Liquidsoap playlists. Possibly use of a LQS Server Function could help + another type of queue.