AllocateItem ClosePin FindProductName FreeItem GetNumOfMixerDevices GetSysAudioDeviceCount GetSysAudioDevicePnpName InsertPinHandle NDEBUG OpenDevice OpenSysAudioDeviceByIndex OpenWavePin PEVENT_ENTRY PPIN_CREATE_CONTEXT PSYSAUDIO_ENTRY PWDMAUD_CLIENT PWDMAUD_COMPLETION_CONTEXT PWDMAUD_DEVICE_EXTENSION PWDMAUD_HANDLE SetIrpIoStatus WdmAudControlOpenMidi WdmAudControlOpenMixer WdmAudControlOpenWave WdmAudDeviceControl WdmAudFrameSize WdmAudGetControlDetails WdmAudGetLineControls WdmAudGetLineInfo WdmAudGetMidiInDeviceCount WdmAudGetMidiOutDeviceCount WdmAudGetMixerDeviceCount WdmAudGetMixerEvent WdmAudGetPnpNameByIndexAndType WdmAudGetWaveInDeviceCount WdmAudGetWaveOutDeviceCount WdmAudMidiCapabilities WdmAudMixerCapabilities WdmAudMixerInitialize WdmAudOpenSysaudio WdmAudOpenSysAudioDevice WdmAudOpenSysAudioDevices WdmAudReadWrite WdmAudRegisterDeviceInterface WdmAudSetControlDetails WdmAudWaveCapabilities WdmAudWaveInitialize WdmAudWrite

ULONG GetSysAudioDeviceCount ( IN PDEVICE_OBJECT  DeviceObject ) Definition at line 34 of file sup.c. Referenced by GetSysAudioDevicePnpName(). { PWDMAUD_DEVICE_EXTENSION DeviceExtension; KSPROPERTY Pin; ULONG Count, BytesReturned; NTSTATUS Status; /* setup the query request */ Pin.Set = KSPROPSETID_Sysaudio; Pin.Id = KSPROPERTY_SYSAUDIO_DEVICE_COUNT; Pin.Flags = KSPROPERTY_TYPE_GET; DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension; /* query sysaudio for the device count */ Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY), (PVOID)&Count, sizeof(ULONG), &BytesReturned); if (!NT_SUCCESS(Status)) return 0; return Count; }