Mateusz Front

Design doc: https://membraneframework.atlassian.net/wiki/spaces/MEMBRANEFR/pages/8978457/Playback+states+refactor TODO: - [ ] Espec tests - [ ] FilterAggregator - [ ] handle_terminate_graceful

Revisit pipeline and element tests

1

Some tests for pipeline and element are a bit outdated. They should be revisited and Espec ones should be rewritten to ExUnit. We should consider adding a code coverage tool...

Currently it kills entire pipeline, so crash groups can't help

- [ ] Make sure other links are successful, there's no memory leak and a parent doesn't fail when a child fails between a link request and actual linking -...

We should revisit the shape of playback states, considering the following: - [ ] Playback states currently are not really related to the actual playbacks, but rather the readiness of...

[TypeCheck](https://github.com/Qqwy/elixir-type_check) seems like a cool library for generating runtime type checking. Though using it in runtime may not be really beneficial for us, using it in integration tests could help...

Consider adding non-strict versions of some actions

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In some cases, it doesn't make sense or it's hard to make sure that some action's parameters are correct, for example, if a child being removed wasn't already removed. It...

Demand units should be taken from caps

1

For example, demand of size _k_ should result in: - demanding _k_ MPEG frames on pad with MPEG caps - demanding _k_*_channels_no_ samples on pad with raw caps - demanding...

Demands in bytes are problematic, because - elements demanding in bytes are incompatible with these demanding in buffers - they introduce complexity in the core, and thus performance overhead and...

Add persistent events

4

Let's consider a case with DTLS handshake and SRTP encryption. We have SRTP encryptor, DTLS sink and some elements between them. Now, we send SRTP key via an upstream event...