Hello, I'm writing a sink module to communicate with a home-made audio server. I follow your advice to use the RAOP module code as a support. So I keep the structure, I can compile it but I'm not able to load the new module anymore. I put it in /usr/lib/pulse-0.9.22/modules but when I run pactl load-module module-spam-sink it doesn't work (Failure in module initialisation) and the log says me: pulseaudio[2340]: module.c: Failed to open module "module-spam-sink": file not found Could you, please, explain me how I can easily load the module ? Dam. Le 29/05/2011 11:19, Colin Guthrie a ?crit : > Hello Damien, > > As your message was waiting moderation and as you asked a question that > may gather some replies, I've subscribed you to the list. I hope that's > OK? If it's a problem you can unsubscribe over at: > > http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss > > We've just moved lists so this is likely a different URL to the one > shown in your "Your message is on hold pending administrator approval" > email you'll have received from your original post. > > 'Twas brillig, and Damien DEJEAN at 25/05/11 19:25 did gyre and gimble: >> Hello, >> >> I'm working on a little sound server for small computers. I already have >> a server and a client library to send sound to this server. Now I wish >> write a pulseaudio module to redirect sound to the library and then send >> it to the little server. >> >> I read the tutorial about modules, but I was noat able to found some >> informations. For example, I need to get the bit width (8, 16 bits ...), >> the sample rate (22k, 44khz) and the sound data, but I don't where I can >> found it. >> >> There are very naive questions, but I don't really know where to begin >> :$, can you help me ? > Well, overall you'll be writing a "Sink" module. This is an output > device module and it will likely connect direct to your server. > > The sink itself will advertise a fixed sample format and then PA will > internally handle any input stream remixing when the stream is connected > to that sink. It is then the sinks responsibility to process the actual > data. While it's certainly not perfect, this is how e.g. the ROAP sink > works, so it may be a good idea to look at the structure of that code > and just replace the RAOP/RTP things with calls to your library. > > > Can I ask what the small sound server is? For small computers > (especially those run off battery or where power saving is desirable) > PulseAudio is one of the only systems to do advanced driving of the alsa > devices using it's timer based scheduling... this approach can save up > to half a watt in power based on current tests. Why is PulseAudio itself > not appropriate for these small computers? (it's already used in several > embedded systems for the reasons of power saving listed above). > > Col > >
