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375 lines
10 KiB
C
375 lines
10 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Kernel Streaming
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* FILE: drivers/wdm/audio/legacy/wdmaud/main.c
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* PURPOSE: System Audio graph builder
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* PROGRAMMER: Andrew Greenwood
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* Johannes Anderwald
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*/
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#include "wdmaud.h"
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#define NDEBUG
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#include <debug.h>
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const GUID KSCATEGORY_SYSAUDIO = {0xA7C7A5B1L, 0x5AF3, 0x11D1, {0x9C, 0xED, 0x00, 0xA0, 0x24, 0xBF, 0x04, 0x07}};
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const GUID KSCATEGORY_WDMAUD = {0x3E227E76L, 0x690D, 0x11D2, {0x81, 0x61, 0x00, 0x00, 0xF8, 0x77, 0x5B, 0xF1}};
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IO_WORKITEM_ROUTINE WdmAudInitWorkerRoutine;
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IO_TIMER_ROUTINE WdmAudTimerRoutine;
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VOID
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NTAPI
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WdmAudInitWorkerRoutine(
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IN PDEVICE_OBJECT DeviceObject,
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IN PVOID Context)
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{
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NTSTATUS Status;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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ULONG DeviceCount;
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/* get device extension */
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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if (DeviceExtension->FileObject == NULL)
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{
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/* find available sysaudio devices */
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Status = WdmAudOpenSysAudioDevices(DeviceObject, DeviceExtension);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("WdmAudOpenSysAudioDevices failed with %x\n", Status);
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return;
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}
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}
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/* get device count */
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DeviceCount = GetSysAudioDeviceCount(DeviceObject);
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DPRINT("WdmAudInitWorkerRoutine SysAudioDeviceCount %ld\n", DeviceCount);
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/* was a device added / removed */
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if (DeviceCount != DeviceExtension->SysAudioDeviceCount)
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{
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/* init mmixer library */
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Status = WdmAudMixerInitialize(DeviceObject);
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DPRINT("WdmAudMixerInitialize Status %x WaveIn %lu WaveOut %lu Mixer %lu\n", Status, WdmAudGetWaveInDeviceCount(), WdmAudGetWaveOutDeviceCount(), WdmAudGetMixerDeviceCount());
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/* store sysaudio device count */
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DeviceExtension->SysAudioDeviceCount = DeviceCount;
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}
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/* signal completion */
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KeSetEvent(&DeviceExtension->InitializationCompletionEvent, IO_NO_INCREMENT, FALSE);
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/* reset work item status indicator */
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InterlockedDecrement((volatile long *)&DeviceExtension->WorkItemActive);
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}
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VOID
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NTAPI
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WdmAudTimerRoutine(
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IN PDEVICE_OBJECT DeviceObject,
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IN PVOID Context)
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{
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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/* get device extension */
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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if (InterlockedCompareExchange((volatile long *)&DeviceExtension->WorkItemActive, 1, 0) == 0)
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{
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/* queue work item */
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IoQueueWorkItem(DeviceExtension->WorkItem, WdmAudInitWorkerRoutine, DelayedWorkQueue, (PVOID)DeviceExtension);
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}
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}
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NTSTATUS
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NTAPI
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WdmaudAddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT PhysicalDeviceObject)
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{
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PDEVICE_OBJECT DeviceObject;
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NTSTATUS Status;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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DPRINT("WdmaudAddDevice called\n");
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Status = IoCreateDevice(DriverObject,
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sizeof(WDMAUD_DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_KS,
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0,
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FALSE,
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&DeviceObject);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("IoCreateDevice failed with %x\n", Status);
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return Status;
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}
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/* get device extension */
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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RtlZeroMemory(DeviceExtension, sizeof(WDMAUD_DEVICE_EXTENSION));
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/* allocate work item */
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DeviceExtension->WorkItem = IoAllocateWorkItem(DeviceObject);
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if (!DeviceExtension->WorkItem)
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{
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/* failed to allocate work item */
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IoDeleteDevice(DeviceObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* register device interfaces */
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Status = WdmAudRegisterDeviceInterface(PhysicalDeviceObject, DeviceExtension);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("WdmRegisterDeviceInterface failed with %x\n", Status);
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IoDeleteDevice(DeviceObject);
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return Status;
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}
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/* initialize sysaudio device list */
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InitializeListHead(&DeviceExtension->SysAudioDeviceList);
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/* initialize client context device list */
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InitializeListHead(&DeviceExtension->WdmAudClientList);
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/* initialize spinlock */
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KeInitializeSpinLock(&DeviceExtension->Lock);
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/* initialization completion event */
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KeInitializeEvent(&DeviceExtension->InitializationCompletionEvent, NotificationEvent, FALSE);
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/* initialize timer */
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IoInitializeTimer(DeviceObject, WdmAudTimerRoutine, (PVOID)WdmAudTimerRoutine);
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/* allocate ks device header */
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Status = KsAllocateDeviceHeader(&DeviceExtension->DeviceHeader, 0, NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("KsAllocateDeviceHeader failed with %x\n", Status);
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IoDeleteDevice(DeviceObject);
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return Status;
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}
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/* attach to device stack */
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DeviceExtension->NextDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
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KsSetDevicePnpAndBaseObject(DeviceExtension->DeviceHeader, DeviceExtension->NextDeviceObject, DeviceObject);
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/* start the timer */
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IoStartTimer(DeviceObject);
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DeviceObject->Flags |= DO_DIRECT_IO | DO_POWER_PAGABLE;
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DeviceObject->Flags &= ~ DO_DEVICE_INITIALIZING;
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return STATUS_SUCCESS;
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}
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VOID
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NTAPI
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WdmAudUnload(
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IN PDRIVER_OBJECT driver)
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{
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DPRINT("WdmAudUnload called\n");
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}
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NTSTATUS
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NTAPI
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WdmAudPnp(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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PIO_STACK_LOCATION IrpStack;
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DPRINT("WdmAudPnp called\n");
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IrpStack = IoGetCurrentIrpStackLocation(Irp);
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if (IrpStack->MinorFunction == IRP_MN_QUERY_PNP_DEVICE_STATE)
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{
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Irp->IoStatus.Information |= PNP_DEVICE_NOT_DISABLEABLE;
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return KsDefaultDispatchPnp(DeviceObject, Irp);
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}
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return KsDefaultDispatchPnp(DeviceObject, Irp);
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}
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NTSTATUS
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NTAPI
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WdmAudCreate(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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NTSTATUS Status;
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PIO_STACK_LOCATION IoStack;
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PWDMAUD_CLIENT pClient;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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/* get device extension */
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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#if KS_IMPLEMENTED
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Status = KsReferenceSoftwareBusObject((KSDEVICE_HEADER)DeviceObject->DeviceExtension);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("KsReferenceSoftwareBusObject failed with %x\n", Status);
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return Status;
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}
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#endif
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if (DeviceExtension->FileObject == NULL)
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{
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/* initialize */
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WdmAudInitWorkerRoutine(DeviceObject, NULL);
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}
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Status = WdmAudOpenSysaudio(DeviceObject, &pClient);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to open sysaudio!\n");
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/* complete and forget */
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Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return STATUS_UNSUCCESSFUL;
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}
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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ASSERT(IoStack->FileObject);
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/* store client context in file object */
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IoStack->FileObject->FsContext = pClient;
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Status = STATUS_SUCCESS;
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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NTSTATUS
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NTAPI
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WdmAudClose(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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/* nothing to do complete request */
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#if KS_IMPLEMENTED
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Status = KsDereferenceSoftwareBusObject(DeviceExtension->DeviceHeader);
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if (NT_SUCCESS(Status))
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{
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if (DeviceExtension->SysAudioNotification)
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Status = IoUnregisterPlugPlayNotification(DeviceExtension->SysAudioNotification);
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}
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#endif
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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WdmAudCleanup(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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PIO_STACK_LOCATION IoStack;
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PWDMAUD_CLIENT pClient;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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ULONG Index;
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KIRQL OldIrql;
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/* get device extension */
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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/* get current irp stack location */
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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/* sanity check */
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ASSERT(IoStack->FileObject);
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/* get client context struct */
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pClient = (PWDMAUD_CLIENT)IoStack->FileObject->FsContext;
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/* sanity check */
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ASSERT(pClient);
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/* acquire client context list lock */
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KeAcquireSpinLock(&DeviceExtension->Lock, &OldIrql);
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/* remove entry */
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RemoveEntryList(&pClient->Entry);
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/* release lock */
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KeReleaseSpinLock(&DeviceExtension->Lock, OldIrql);
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/* check if all audio pins have been closed */
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for (Index = 0; Index < pClient->NumPins; Index++)
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{
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DPRINT("Index %u Pin %p Type %x\n", Index, pClient->hPins[Index].Handle, pClient->hPins[Index].Type);
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if (pClient->hPins[Index].Handle && pClient->hPins[Index].Type != MIXER_DEVICE_TYPE)
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{
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/* found an still open audio pin */
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ZwClose(pClient->hPins[Index].Handle);
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}
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WdmAudCloseAllMixers(DeviceObject, pClient, Index);
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}
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/* free pin array */
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if (pClient->hPins)
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FreeItem(pClient->hPins);
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/* free client context struct */
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FreeItem(pClient);
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/* clear old client pointer */
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IoStack->FileObject->FsContext = NULL;
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/* complete request */
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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/* done */
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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DriverEntry(
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IN PDRIVER_OBJECT Driver,
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IN PUNICODE_STRING Registry_path
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)
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{
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DPRINT("Wdmaud.sys loaded\n");
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Driver->DriverUnload = WdmAudUnload;
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Driver->MajorFunction[IRP_MJ_CREATE] = WdmAudCreate;
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Driver->MajorFunction[IRP_MJ_CLOSE] = WdmAudClose;
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Driver->MajorFunction[IRP_MJ_PNP] = WdmAudPnp;
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Driver->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = KsDefaultForwardIrp;
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Driver->MajorFunction[IRP_MJ_CLEANUP] = WdmAudCleanup;
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Driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = WdmAudDeviceControl;
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Driver->MajorFunction[IRP_MJ_WRITE] = WdmAudReadWrite;
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Driver->MajorFunction[IRP_MJ_READ] = WdmAudReadWrite;
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Driver->MajorFunction[IRP_MJ_POWER] = KsDefaultDispatchPower;
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Driver->DriverExtension->AddDevice = WdmaudAddDevice;
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return STATUS_SUCCESS;
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}
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