On Fri, 30.10.09 17:19, eric (ekilfoil at gmail.com) wrote: > I am having an issue using the simple API since upgrading from 0.9.14 > (ubuntu 0.9.04) to 0.9.19 (ubuntu 0.9.10). After quite a bit of debugging, > I have been able to at least isolate the problem a little bit. I've > confirmed with a few different users that this problem exists and > the (really horrible) workaround fixes it. Here's the basics: > > My application opens an input stream from pulse and then starts a thread to > read input from a source. So I'm basically running pa_simple_new() and > starting a thread that runs pa_simple_read() until it sees a flag change to > tell it to stop. > > My app has a loop which reads 640 bytes of input from the source and then > sends it into a pipe. There is really nothing in between these functions. > It's more or less just read 640 bytes and then send to the pipe. Here is > the debug output: > > main input iteration > reading 640 bytes from pulse source > iteration after 0.000006 seconds > reading 640 bytes from pulse source > iteration after 0.000014 seconds > reading 640 bytes from pulse source > iteration after 0.000020 seconds > reading 640 bytes from pulse source > > This shows that I've read 640 bytes of PCM data (at 44.1khz) in 6 > microseconds. To preempt the question, no, this is not buffered data. this > is consistently reading this way immediately after opening. I am sorry, please elaborate on what exactly here doesn't work as expected? Note that PA can return data to you that was recorded *before* your stream actually was created. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4
