|This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.|
This function determines the cause of the audio interrupt and returns the current device status.
An integer indicating the type of interrupt. The defined values are:
This function supports the implementation of the audio PDD.
The PDD reports the status of the playback or record circuitry. The interrupt occurs when the audio DMA passes a buffer boundary. See the AUDIO_STATEreturn values for the possible states that an interrupt can represent.
AUDIO_STATEis the state of the audio device. This value can represent a state change of either the input or the output circuit or both. The lower 4 bits represents the input status, and the upper 4 bits represents the output status; so if the current interrupt is for both input and output, the values can be combined using the ORoperator. However, if the interrupt represents only one circuit, the other 4 bits should remain 0; otherwise, the MDD interprets this as a change or update in the circuit's status.
|Runs on||Versions||Defined in||Include||Link to|
|Windows CE OS||1.0 and later||Waveddsi.h|
Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
Last updated on Tuesday, July 13, 2004