DMA Address Plug-In for HAL
DMA Address Plug-In for HAL
- Subject: DMA Address Plug-In for HAL
- From: Brian Souder <email@hidden>
- Date: Fri, 26 Jul 2002 06:56:14 -0400
I have been looking at way to setup a sound card to do accelerated
audio. At the moment it seems like there are two possibilities.
1) Make a HAL Plug-In which utlizes DMA Addresses to redirect the audio
streams to the card directly. We weren't sure if the data would still
pass through the G3/G4 processor before being passed to the card
though. The goal would be to remove all or almost all of the CPU load
from the the system.
2) Change the Apple Audio Engine code to be for the Sound Card only,
thus redirecting the output directly to the card. Again hopefully
removing the audio load from the system.
If you have a better idea how this might be implemented, please feel
free to contact me. The documentation on the audio system in a lot of
these areas is very light to say the least. If there is not already a
system in place, now might be the time to work this out.
Thank You,
Brian Souder
email@hidden
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