IOAudioEngine.h

Includes:

<IOKit/IOService.h>
<IOKit/audio/IOAudioTypes.h>
"IOAudioTypes.h"
<IOKit/IOBufferMemoryDescriptor.h>

Overview

Use the links in the table of contents to the left to access the documentation.

Classes

IOAudioEngine: Abstract base class for a single audio audio / I/O engine.

Typedefs

IOAudioEnginePosition: Represents a position in an audio audio engine.

IOAudioEnginePosition

Represents a position in an audio audio engine.


typedef struct { 
    UInt32 fSampleFrame; 
    UInt32 fLoopCount; 
} IOAudioEnginePosition;

Fields

fSampleFrame: The sample frame within the buffer - starts at 0.
fLoopCount: The number of times the ring buffer has looped.

Discussion

This position is based on the sample frame within a loop around the sample buffer, and the loop count which starts at 0 when the audio engine begins playback.

Mac Dev Center Mac OS X Reference Library Drivers, Kernel, & Hardware: Kernel Device Drivers Kernel Framework Reference

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Last Updated: 2010-07-29