User mode driver (HAL plugin) vs Kernel mode
User mode driver (HAL plugin) vs Kernel mode
- Subject: User mode driver (HAL plugin) vs Kernel mode
- From: Tuviah Snyder <email@hidden>
- Date: Mon, 28 Jan 2013 18:27:33 +0000
- Thread-topic: User mode driver (HAL plugin) vs Kernel mode
Hello,
A few months ago I asked the list about writing a user mode audio driver. At that time the available sample code for such a thing was minimal to non existent. Therefore list members suggested writing a kernel mode audio driver.
Recently, Apple has posted simple and complex Core Audio User Space driver sample code, and made several updates. I'm wondering then should I write a user mode audio driver, based on NullAudio, and what are the limitations when compared to kernel mode driver. My driver simply needs to act as a virtual audio driver, reading audio from shared memory that my application writes to.
Currently i'm using send audio to AudioReflector which acts as both an output device for my application and input device for the other application. But if there is a user mode way, that's equally as good or better that would be more ideal.
best
Tuviah
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