December 2011
Intermediate to advanced
485 pages
15h 47m
English
Content preview from OS X and iOS Kernel ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Multi-Function Drivers
USB and PCI devices may be composite devices that include multiple independent devices in which each device's separate driver can handle each function. Other devices may consist of one logical device handled by multiple drivers. Let's consider a modern graphics card with an HDMI output port as an example. HDMI is able to carry both audio and video, so it would be nice to provide an audio driver that allowed the device to be used with Core Audio. The device is a graphics card, so the hardware doesn't have the typical DMA engine of most audio hardware. Instead, audio data is sent along with video frames at regular vertical blanking intervals. This design means that the audio and video parts are intimately linked and need ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.