Thanks wasn't too difficult to track down after your info. The max request was not correct in my module. On 21 March 2015 at 04:48, Tanu Kaskinen <tanu.kaskinen at linux.intel.com> wrote: > On Fri, 2015-03-20 at 08:04 +1100, Brendon Costa wrote: > > Hi all, > > > > I am developing a pulse audio sink module for a custom networked audio > > device I have. > > > > This device only supports a very specific format: 3 channel > > PA_SAMPLE_S16NE @ 32000Hz and uses a custom TCP protocol. > > > > I am using the esound-sink module as a basis to develop my one and > > have setup my pa_sample_spec accordingly. The module starts up, > > pushing silence through to the device fine. > > > > However when I try and connect a music player source to it I get the > > following assertion: > > > > sink-input.c: Assertion 'pa_frame_aligned(nbytes, > > &i->sink->sample_spec)' failed at pulsecore/sink-input.c:1168, > > function pa_sink_input_update_max_request(). Aborting. > > > > I couldn't make much sense of this assertion. Is someone able to help > > me out with its meaning/cause? > > The assertion means that the nbytes parameter of > pa_sink_input_update_max_request() was not a multiple of the size of one > frame. If the sink in question is the sink that you're developing, i.e. > the audio format is 3 channels with 16-bit samples, the size of one > frame is 6 bytes. Check who called the function and why it gave a number > that is not a multiple of 6. > > > My original guess is that it is related to this specific sample spec > > not matching the music players source spec (though weird that such an > > error would be an assertion so I am probably wrong). > > > > Is pulse audio supposed to auto "match" sample specs between sinks and > > sources? > > You probably mean "sink inputs" instead of "sources". A music player > application is represented by a "sink input". A "source" would be a > capture device. > > But to answer your question: yes, when the audio format of a sink input > doesn't match the format of the sink, the audio is automatically > converted to the right format. > > -- > Tanu > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150323/f8707930/attachment.html>
