Based on patch from Barnabás Pőcze <pobrn@protonmail.com>
Instead of trying to keep track of the missing bytes ourselves, use the
simple tlength - avail - requested formula to request more bytes from
the client.
Fixes#1981
Only call `spa_list_remove()` in `stream_free()` if the
stream is pending. `spa_list_remove()` does not reinitialize
the list node, therefore calling `spa_list_remove()` again
after the stream has been removed from the pending list
will corrupt the pending list of the client.
Keep track of the current quantum and recalculate the tlength in the
same way that pulseaudio does.
Send a bufferattr changed message to a client when we change the
parameters.
This fixes the case where the quantum is increased and there needs to be
more buffering to keep the stream going.
When the client adapter is configured in passthrough mode, the stream param
changed event in pipewire-pulse is emitted before the session manager creates
the link, and not after. Therfore, the peer can never be found when replying
create stream, and the pulseaudio application receives a stream error.
This patch delays the create stream reply until the link is added if the peer
cannot be found, fixing the above race conditon to allow passthrough mode to
work with pulseaudio applications.
