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The following table shows the audio device driver service-provider interface (DDSI) functions.
| Programming element | Description |
|---|---|
| PDD_AudioDeinitialize | This function turns off and disconnects the audio device. |
| PDD_AudioGetInterruptType | This function determines the cause of the audio interrupt and returns the current device status. |
| PDD_AudioInitialize | This function initializes the audio device for operation. |
| PDD_AudioMessage | This function sends messages from user applications to the audio driver's platform-dependent driver (PDD) layer. |
| PDD_AudioPowerHandler | This function is responsible for managing the audio hardware during POWER_UP and POWER_DOWN notifications. |
| PDD_IoControl | This function sends IOCTL codes that are not part of the Wave or Mixer API to the audio driver's PDD layer. |
| PDD_WaveProc | This function sends messages to the audio driver's PDD layer. |
See Also
Waveform Audio Driver Structures | Waveform Audio Driver Functions | Waveform Input Driver Messages | Waveform Output Driver Messages | WPDM Messages
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