CMAF Ingest

[tobbee]

This is an ongoing implementation of CMAF-Ingest role for livesim2.

It provides a REST API at /api/docs/](http://localhost:8888/api/docs#/ for creating CMAF Ingest sessions that sends segments to a provided URL on a server. The segments will be sent as the right wall-clock-time is reached. There is also a test mode where one can trigger each segment. That is used in unit-test, but can also be done via the REST API.

One can start a session via the exposed API in the browser, or via curl as

curl --request POST \
  --url http://localhost:8888/api/cmaf-ingests \
  --header 'Accept: application/json, application/problem+json' \
  --header 'Content-Type: application/json' \
  --data '{
  "destination": "http://localhost:8080/upload",
  "duration": 20,
  "livesimURL": "/livesim2/testpic_2s/Manifest.mpd"
  }'

There is also a receiving server at cmd/cmaf-ingest-receiver. It can receive a stream livesim2 but also from AWS Media Live.

Implementation status

• [x] Streams and Segment push URLs
• [x] Btrt box insertion and interpretation
• [x] Kind box insertion and interpretation for role
• [x] Receiver MPD generation from segments alone
• [x] Receiver pruning depending on time
• [x] stpp and wvtt subtitle support
• [x] Basic Auth authentication per stream
• [x] lmsg for time-limited generation
• [x] A cmaf-ingest-receiver component to receive the streams
• [x] Receiver support for PUT and POST requests
• [x] Receiver configuration of buffer duration (timeShiftBufferDepth)
• [x] Receiver storage of metadata track
• [x] Receiver generation of a simple dynamic DASH MPD with SegmentTemplate + Number
• [x] Receiver pruning of stored segments

Also see #201 for requirements.