167 lines
3.9 KiB
C
167 lines
3.9 KiB
C
/*++
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"@(#) NEC auxout.c 1.1 95/03/22 21:23:25"
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Copyright (c) 1995 NEC Corporation
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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auxout.c
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Abstract:
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This module contains code for aux control which is non
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hardware specific.
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include <soundlib.h>
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, SoundAuxDispatch)
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#endif
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NTSTATUS
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SoundAuxDispatch(
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IN OUT PLOCAL_DEVICE_INFO pLDI,
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IN PIRP pIrp,
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IN PIO_STACK_LOCATION IrpStack
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)
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/*++
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Routine Description:
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AUX IOCTL call dispatcher
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Arguments:
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pLDI - Pointer to local device data
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pIrp - Pointer to IO request packet
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IrpStack - Pointer to current stack location
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Return Value:
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Return status from dispatched routine
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--*/
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{
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NTSTATUS Status;
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switch (IrpStack->MajorFunction) {
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case IRP_MJ_CREATE:
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Status = STATUS_SUCCESS;
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break;
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case IRP_MJ_CLOSE:
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Status = STATUS_SUCCESS;
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break;
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case IRP_MJ_DEVICE_CONTROL:
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//
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// Dispatch the IOCTL function
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//
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Status = STATUS_INTERNAL_ERROR;
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switch (IrpStack->Parameters.DeviceIoControl.IoControlCode) {
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case IOCTL_AUX_GET_CAPABILITIES:
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Status = (*pLDI->DeviceInit->DevCapsRoutine)(pLDI, pIrp, IrpStack);
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break;
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case IOCTL_AUX_SET_VOLUME:
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#ifdef MASTERVOLUME
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//
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// If this is the master volume device then let everyone else know
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// (note that not all devices need a master volume because they
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// may have a master volume control in hardware).
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//
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if (NT_SUCCESS(Status) && pLDI->MasterVolume) {
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//
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// Loop through all the driver's devices setting their
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// volume (including the master volume).
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//
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PDEVICE_OBJECT pDO;
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for (pDO = IrpStack->DeviceObject->DriverObject->DeviceObject;
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pDO != NULL;
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pDO = pDO->NextDevice) {
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NTSTATUS StatusCurrent;
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PLOCAL_DEVICE_INFO pLDICurrent = pDO->DeviceExtension;
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//
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// Get the device mutant
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//
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KeWaitForSingleObject(pLDICurrent->DeviceMutant,
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Executive,
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KernelMode,
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FALSE, // Not alertable
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NULL);
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StatusCurrent =
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SoundIoctlSetVolume(pLDICurrent, pIrp, IrpStack);
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KeReleaseMutant(pLDICurrent->DeviceMutant, 0, FALSE, FALSE);
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//
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// Return the first error
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//
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if (!NT_SUCCESS(StatusCurrent) && NT_SUCCESS(Status)) {
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Status = StatusCurrent;
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}
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}
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} else {
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#endif // MASTERVOLUME
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Status = SoundIoctlSetVolume(pLDI, pIrp, IrpStack);
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#ifdef MASTERVOLUME
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}
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#endif // MASTERVOLUME
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break;
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case IOCTL_AUX_GET_VOLUME:
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Status = SoundIoctlGetVolume(pLDI, pIrp, IrpStack);
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break;
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case IOCTL_SOUND_GET_CHANGED_VOLUME:
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Status = SoundIoctlGetChangedVolume(pLDI, pIrp, IrpStack);
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break;
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default:
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dprintf2(("Unimplemented IOCTL (%08lXH) requested", IrpStack->Parameters.DeviceIoControl.IoControlCode));
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Status = STATUS_NOT_IMPLEMENTED;
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break;
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}
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break;
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case IRP_MJ_CLEANUP:
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Status = STATUS_SUCCESS;
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break;
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default:
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dprintf1(("Unimplemented major function requested: %08lXH", IrpStack->MajorFunction));
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Status = STATUS_NOT_IMPLEMENTED;
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break;
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}
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return Status;
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}
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