On Fri, Mar 14, 2025 at 02:32:15PM +0000, Srinivas Kandagatla wrote: > From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> > > On Qualcomm Audioreach setup, some of the audio artifacts are seen in > both recording and playback. These patches fix issues by > 1. Adjusting the fragment size that dsp can service. > 2. schedule available playback buffers in time for dsp to not hit under runs > 3. remove some of the manual calculations done to get hardware pointer. > > With these patches, am able to see significant Audio quality improvements. > I have few more patches to optimize the dsp drivers, but for now am > keeping this series simple to address the underruns and overruns issues > noticed in pipewire setup. > > Any testing would be appreciated. > > Please note that on pipewire min-latency has to be set to 512 which > reflects the DSP latency requirements of 10ms. You might see audio > artifacts like glitches if you try to play audio below 256 latency. > Changes since v3: > - updated period size aligment patch with 10ms period size > contstriants. > > Changes since v2: > - dropped patch which is causing regression with pluseaudio. > - setup period sizes only for capture path > - fix underruns/overruns in dsp pipelines. > - add fixes tag > - add patch to fix buffer alignment > > Changes since v1: > - added new patches to fix the fragment size, pointer > calculations > - updated to schedule only available buffers. > I tested v4 on the X13s with PulseAudio and T14s with PipeWire. I'm no longer noticing any regressions with PulseAudio, while this series makes PipeWire actually usable. I may be hearing some crackling with PipeWire when recording with the pavucontrol volume meters enabled which results in a quantum size of 256. But I guess that's to be expected. Playback seems to work also at 256 with v4. Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx> Johan
