Yamaha MusicCast (or at least the RX-A880) seems to be stricter about
the URI here, as it rejects `*`. Examples, such as those documented by
OpenAirplay, use the real URI.
Some Airplay devices announce themselves as using the ALAC (Apple Lossless Audio
Codec) format, while pipewire only supports the PCM codec. A look at the
Pulseaudio RAOP reveals that ALAC is supported there, but the encoding looks
exactly like what pipewire does for PCM. This patch adds support for ALAC, but
it uses the existing PCM infrastructure to send the audio data.
Previously, the content had to be a null-terminated byte
sequence because the sending function used `strlen()` to
determine its length. However, `rtsp_do_auth_setup()` needs
to send a non-textual byte sequence, and it only worked so
far because it did not happen to have any zero bytes in it.
Add a "content_length" parameter and change the type of
"content" to facilitate sending arbitrary byte sequences.
So that all nodes attach to some driver to be scheduled.
For the virtual sink/sources this is a normal thing and we can remove
the custom settings.
For normal stream, this now makes it possible to link pw-play directly
to pw-record and have it transport data.
Fixes#1761
For the modules that require a driver, don't add ourselves to
the pipewire.dummy group but instead just use the NODE_WANT_DRIVER
property to be assigned to a driver.
This makes it possible for the nodes to move to another driver than the
dummy driver (which has very high priority) and it avoids resampling in
cases where the nodes are linked to an audio source or sink.
Handle control source io. We don't yet implement retransmission,
though.
Handle latency by exposing the server latency on the stream ports.
Use the Format param event to connect/announce and teardown.
Use the stream state to record/flush.
Fix some leaks.
Remove the state from rtsp-client, we don't need it.
Strip whitespace from header values.
