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Audio Device Driver Programming Guide
(HTML)
(PDF)
Explains how to develop kernel-resident drivers for audio devices.
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Guides |
2009-03-04
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I/O Kit Framework Reference
(HTML)
Describes the I/O Kit classes that support non-kernel access to I/O Kit objects through the device-interface mechanism.
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Reference |
2009-03-04
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Kernel Framework Reference
(HTML)
Describes the APIs and classes (including I/O Kit families) that support kernel-resident device drivers.
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Reference |
2009-01-06
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Allocating and sharing memory with user space from an I/O Kit driver
(HTML)
( )
QA1197: Describes the preferred technique for allocating and sharing buffers in an I/O Kit kernel driver.
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Technical Q&As |
2008-10-13
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Generating a Non-Maskable Interrupt (NMI)
(HTML)
()
QA1264: Explains how to generate a non-maskable interrupt (NMI) on modern Macintosh systems.
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Technical Q&As |
2008-10-13
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Retain Counts of io_object_t Objects in IOKit.framework
(HTML)
()
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
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Technical Q&As |
2008-09-24
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IODeviceTree and the I/O Registry
(HTML)
()
QA1120: Describes the IODeviceTree plane in the Mac OS X I/O Registry.
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Technical Q&As |
2008-09-18
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SimpleUserClient
(HTML)
(DMG)
(ZIP)
Shows how to create a user client for an I/O Kit kernel driver.
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Sample Code |
2008-08-27
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Building Universal I/O Kit Drivers
(HTML)
TN2163: How to build a universal I/O Kit kernel driver while avoiding common pitfalls.
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Technical Notes |
2008-08-18
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Understanding and Debugging Kernel Panics
(HTML)
()
TN2063: Addresses kernel panics: what they are and how to debug the code that caused the panic.
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Technical Notes |
2008-08-14
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Audio Developer Note
(HTML)
Describes the analog and digital audio capabilities of Mac computers.
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Guides |
2008-04-28
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FireWire Audio User Library Framework Reference
(HTML)
Describes the API that supports user-space access to FireWire audio devices and enables the creation of virtual FireWire audio devices.
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Reference |
2008-04-08
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AppleFWAudio Vendor Specific Override Driver
(HTML)
(DMG)
(ZIP)
This KEXT allows third-party vendors to customize AppleFWAudio with their own device-specific information.
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Sample Code |
2007-06-01
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Using AudioDeviceRead in Mac OS 10.4
(HTML)
TN2113: How to use AudioBufferLists with AudioDeviceRead in Tiger and beyond.
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Technical Notes |
2006-11-29
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SimplePlayThru
(HTML)
(DMG)
(ZIP)
Use the HAL's Audio Output Unit (AUHAL) for device input and output on a single device (play-thru)
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Sample Code |
2006-10-25
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USBPrivateDataSample
(HTML)
(DMG)
(ZIP)
Demonstrates notifications when a USB device is hotplugged and associating arbitrary data with each device.
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Sample Code |
2006-10-16
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The "packages" node in the device tree
(HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
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Technical Q&As |
2006-02-22
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AudioCDSample
(HTML)
(DMG)
(ZIP)
Demonstrates how to discover audio CDs and access the TOC information presented by the CD-DA filesystem.
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Sample Code |
2005-10-04
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SampleUSBAudioPlugin
(HTML)
(DMG)
(ZIP)
USB audio plugin that performs a lowpass filtering operation on audio streamed through an audio USB Device.
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Sample Code |
2005-03-07
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Obtaining the name of an external MIDI Device from a MIDI Endpoint
(HTML)
QA1374: Get the names of external MIDI Devices from MIDI Endpoints.
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Technical Q&As |
2004-12-01
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Available FireWire Isochronous Bandwidth
(HTML)
QA1356: Discusses attempting to "pre-flight" an isochronous bandwidth allocation request by reading the currently available bandwidth.
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Technical Q&As |
2004-07-07
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Installing an I/O Kit KEXT Without Rebooting
(HTML)
QA1319: Describes the state of the art of installing I/O Kit kernel extensions (KEXTs) without requiring a restart.
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Technical Q&As |
2003-10-28
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Power Management; Policy Maker vs. Power Controller
(HTML)
()
QA1121: Describes the differences between a Power Management Policy Maker and a Power Management Power Controller.
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Technical Q&As |
2002-02-13
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IOKit Framework Headers
(HTML)
()
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
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Technical Q&As |
2002-01-15
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Digital CD Audio
(HTML)
()
TN1187: Describes digital audio on the Macintosh.
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Technical Notes |
2000-04-01
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Are the Name Registry device tree nodes unique?
(HTML)
Deprecated - HW64: Discusses whether Name Registry nodes copied from the Open Firmware device tree are unique.
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Technical Q&As |
1999-10-11
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What are configuration variables in Open Firmware?
(HTML)
()
HW38: Defines the configuration variables in Open Firmware.
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Technical Q&As |
1999-02-15
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New Sound Input Driver Features
(HTML)
()
Deprecated - TN1124: Describes the visible features and changes, in Mac OS 8.1, for PCI sound input drivers.
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Technical Notes |
1998-04-01
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