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When the system goes into the suspend state, the Device Manager calls the audio driver's WAV_PowerDownfunction. This function should call the PDD_AudioPowerHandlerfunction to allow the PDD to put the hardware in a low-power consumption mode, if it is available. When the system resumes, the Device Manager calls the audio driver's WAV_PowerUpfunction, which should also call PDD_AudioPowerHandler. WAV_PowerUpalso calls the SetInterruptEventfunction for the audio interrupt to allow any active handles to be released by the IST.
Last updated on Tuesday, July 13, 2004