On 03/30/2014 07:08 PM, Thomas Martitz wrote: > 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 Thanks for the quick reply Thomas. :) This looks like a possibility. I'll give it a try tomorrow. But I have to admit that it feels like the wrong way around (PA handling video and socket server events...). But what works works I guess.
