An archive output: recording what the station airs

[robert-dean]

Split from #39. The Opus, AAC and FLAC mounts and the AAC-only HLS output are built; the one output that section named as still missing is an archive.

stream/radio.liq has no output.file with reopen_when (so a file per hour or per show), and stream.settings.ts has no archive setting. #39 § "Still not built: an archive output" explains why it is not on unconditionally the way the mounts are: a mount exists so a listener can arrive, and nobody arrives at an archive.

[robert-dean]

This has shipped in #806.

Settings → Stream → Record what airs is off by default. It offers Live shows only (one MP3 per show, named after it) or Everything on air (those, plus the rest of the programme in hourly files). Recordings are 192 kbps MP3s in /data/streamarchive. A nightly sweep deletes them after Keep recordings for (days), which is 14 by default; zero keeps them all. Check-up → Recordings plays them (with seeking in long shows), downloads them and deletes them.

As argued above, it isn't on by default: nobody tunes in to an archive. It also only records while the station is actually on air, so it never fills a disk with silence.