NTSTATUS
WdmAudControlDeviceType(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PWDMAUD_DEVICE_INFO DeviceInfo,
IN PWDMAUD_CLIENT ClientInfo)
{
ULONG Result = 0;
NTSTATUS Status = STATUS_SUCCESS;
PWDMAUD_DEVICE_EXTENSION DeviceExtension;
DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
if (DeviceInfo->DeviceType == MIXER_DEVICE_TYPE)
{
Result = WdmAudGetMixerDeviceCount();
}
else if (DeviceInfo->DeviceType == WAVE_OUT_DEVICE_TYPE)
{
Result = WdmAudGetWaveInDeviceCount();
}
else if (DeviceInfo->DeviceType == WAVE_IN_DEVICE_TYPE)
{
Result = WdmAudGetWaveOutDeviceCount();
}
else if (DeviceInfo->DeviceType == MIDI_IN_DEVICE_TYPE)
{
Result = WdmAudGetMidiInDeviceCount();
}
else if (DeviceInfo->DeviceType == MIDI_OUT_DEVICE_TYPE)
{
Result = WdmAudGetMidiOutDeviceCount();
}
/* store result count */
DeviceInfo->DeviceCount = Result;
DPRINT("WdmAudControlDeviceType Status %x Devices %u\n", Status, DeviceInfo->DeviceCount);
return SetIrpIoStatus(Irp, STATUS_SUCCESS, sizeof(WDMAUD_DEVICE_INFO));
}
VOID
NTAPI
WdmAudInitWorkerRoutine(
IN PDEVICE_OBJECT DeviceObject,
IN PVOID Context)
{
NTSTATUS Status;
PWDMAUD_DEVICE_EXTENSION DeviceExtension;
ULONG DeviceCount;
/* get device extension */
DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
/* get device count */
DeviceCount = GetSysAudioDeviceCount(DeviceObject);
DPRINT("WdmAudInitWorkerRoutine SysAudioDeviceCount %ld\n", DeviceCount);
/* was a device added / removed */
if (DeviceCount != DeviceExtension->SysAudioDeviceCount)
{
/* init mmixer library */
Status = WdmAudMixerInitialize(DeviceObject);
DPRINT("WdmAudMixerInitialize Status %x WaveIn %lu WaveOut %lu Mixer %lu\n", Status, WdmAudGetWaveInDeviceCount(), WdmAudGetWaveOutDeviceCount(), WdmAudGetMixerDeviceCount());
/* store sysaudio device count */
DeviceExtension->SysAudioDeviceCount = DeviceCount;
}
/* signal completion */
KeSetEvent(&DeviceExtension->InitializationCompletionEvent, IO_NO_INCREMENT, FALSE);
/* reset work item status indicator */
InterlockedDecrement((volatile long *)&DeviceExtension->WorkItemActive);
}
