Hi Sergey, My hope is to get lower latency audio. However, after reading up on DirectSound and WASAPI(shared) I'm becoming skeptical that this is possible, due to both going through a Windows software mixer before going to the hardware, which is an impediment to low latency audio.
I'll try to write some tests in C/C++ to measure performance of DirectSound vs WASAPI(shared). On Thu, Feb 13, 2020 at 9:06 AM Sergey Bylokhov <sergey.bylok...@oracle.com> wrote: > Hi Izmar, > > You are very welcome to the OpenJDK team! And thank you for sharing your > ideas on how to improve JavaSound. Before you start, could you tell us more > about WASAPI(shared)? What are the advantages over DirectSound? I am not > sure we can use WASAPI(exclusive) and block everything else on the system. > > On 2/9/20 12:32 am, Izmar Verhage wrote: > > I recently joined OpenJDK after concluding that the Java Sound API seems > to have no way to speak WASAPI. In the OpenJDK sources that I checked I was > only able to find PLATFORM_API_WinOS_DirectSound.cpp and no WASAPI variant > of a similar file. > > > > To my knowledge WASAPI should give us much lower latency than > DirectSound, regardless of whether shared or exclusive WASAPI mode is used. > > > > Additionally DirectSound has been deprecated for quite some time. > > > > If the only impediment to have WASAPI is that someone should build it, I > would like to work on this. > > > -- > Best regards, Sergey. >
