Am 30.03.2014 17:04, schrieb Stephan Soller:
Hi,
is there a way to get the pollfds out of the poll() based Pulse Audio
mainloop? Basically I want to do the poll() myself so I can poll for
other stuff as well (some v4l2 devices and UNIX domain sockets).
In ALSA there is the snd_pcm_poll_descriptors*() family of functions
to get the required pollfds. But I haven't found an equivalent Pulse
Audio function for that kind of stuff.
I looked at the PA mainloop source code and found no matching
functions
(http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/pulse/mainloop.c).
I found the pollfds and n_pollfds members in the pa_mainloop struct
but no way to access them from the outside. Does that mean I'm stuck
with ALSA?
A little background: I'm currently building an audio/video live mixing
program. It combines several video and audio streams (webcams, frame
grabber, mics, ...) into one live stream and sends it to an encoder
process (ffmpeg).
One big poll() loop fechtes video and audio data and manages some UNIX
domain sockets to send the result onwards. OpenGL is used to combine
the different video streams. The program only shuffles data around and
if possible I want to keep everything in one single threaded poll() loop.
Any ideas are welcome.
Alternatively you can add your FDs to the pa mainloop using
mainloop_io_new(). The end result (all FDs are covered with a single
poll() call) is the same.
Best regards
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