When a stream uses the FIX_ flags it should negotiate to the format of
the sink or source it connects to. To do this, look up the sink or
source and look at the format, use this as the allowed format for the
stream when the FIX flags are set.
Make it still possible to override with with properties. Use
audio.position to make it possible to set a channelmap override.
We need to create fake channels when parsing the IEC958 format or
else we get an invalid format and IEC958 passthrough doesn't work.
Ignore the IEC958 formats when collecting formats for the device or else
the fake channels mess with the real channels of the device.
See #1442
Virtual devices tend to start with partial fields set in the EnumFormat
param (usually rate is missing). This causes virtual devices to be
invisible until they are used in some way.
Fix this by relaxing the parsing of EnumFormat and by falling back to
the server defaults for the unspecified fields.
Fixes#1413
This starts breaking up the giant monolith that is the pulse-server.c
code into more manageable chunks by trying to split the module code into
individual compilation units.
