+++ /dev/null
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS Kernel Streaming
- * FILE: drivers/wdm/audio/legacy/wdmaud/deviface.c
- * PURPOSE: System Audio graph builder
- * PROGRAMMER: Andrew Greenwood
- * Johannes Anderwald
- */
-
-#include "wdmaud.h"
-
-#define NDEBUG
-#include <debug.h>
-
-NTSTATUS
-WdmAudOpenSysAudioDevice(
- IN LPWSTR DeviceName,
- OUT PHANDLE Handle)
-{
- UNICODE_STRING SymbolicLink;
- OBJECT_ATTRIBUTES ObjectAttributes;
- IO_STATUS_BLOCK IoStatusBlock;
- NTSTATUS Status;
-
- RtlInitUnicodeString(&SymbolicLink, DeviceName);
- InitializeObjectAttributes(&ObjectAttributes, &SymbolicLink, OBJ_OPENIF | OBJ_KERNEL_HANDLE, NULL, NULL);
-
- Status = IoCreateFile(Handle,
- SYNCHRONIZE | GENERIC_READ | GENERIC_WRITE,
- &ObjectAttributes,
- &IoStatusBlock,
- NULL,
- 0,
- 0,
- FILE_OPEN,
- FILE_SYNCHRONOUS_IO_NONALERT,
- NULL,
- 0,
- CreateFileTypeNone,
- NULL,
- IO_NO_PARAMETER_CHECKING | IO_FORCE_ACCESS_CHECK);
-
- return Status;
-}
-
-NTSTATUS
-NTAPI
-DeviceInterfaceChangeCallback(
- IN PVOID NotificationStructure,
- IN PVOID Context)
-{
- DEVICE_INTERFACE_CHANGE_NOTIFICATION * Event = (DEVICE_INTERFACE_CHANGE_NOTIFICATION*)NotificationStructure;
-
- DPRINT1("DeviceInterfaceChangeCallback called %p\n", Event);
- DbgBreakPoint();
- return STATUS_SUCCESS;
-}
-
-NTSTATUS
-WdmAudOpenSysAudioDeviceInterfaces(
- IN PWDMAUD_DEVICE_EXTENSION DeviceExtension,
- IN LPWSTR SymbolicLinkList)
-{
- SYSAUDIO_ENTRY * Entry;
- ULONG Length;
-
- DPRINT1("WdmAudOpenSysAudioDeviceInterfaces called\n");
-
- while(*SymbolicLinkList)
- {
- Length = wcslen(SymbolicLinkList) + 1;
- Entry = (SYSAUDIO_ENTRY*)AllocateItem(NonPagedPool, sizeof(SYSAUDIO_ENTRY) + Length * sizeof(WCHAR));
- if (!Entry)
- {
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- Entry->SymbolicLink.Length = Length * sizeof(WCHAR);
- Entry->SymbolicLink.MaximumLength = Length * sizeof(WCHAR);
- Entry->SymbolicLink.Buffer = (LPWSTR) (Entry + 1);
- wcscpy(Entry->SymbolicLink.Buffer, SymbolicLinkList);
-
- InsertTailList(&DeviceExtension->SysAudioDeviceList, &Entry->Entry);
-
- DeviceExtension->NumSysAudioDevices++;
- SymbolicLinkList += Length;
- }
- return STATUS_SUCCESS;
-}
-
-
-NTSTATUS
-WdmAudOpenSysAudioDevices(
- IN PDEVICE_OBJECT DeviceObject,
- IN PWDMAUD_DEVICE_EXTENSION DeviceExtension)
-{
- NTSTATUS Status = STATUS_SUCCESS;
- LPWSTR SymbolicLinkList;
- SYSAUDIO_ENTRY * Entry;
- ULONG Length;
- HANDLE hSysAudio;
- PFILE_OBJECT FileObject;
- UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\sysaudio\\GLOBAL");
-
- if (DeviceExtension->DeviceInterfaceSupport)
- {
- Status = IoGetDeviceInterfaces(&KSCATEGORY_SYSAUDIO,
- NULL,
- 0,
- &SymbolicLinkList);
-
- if (NT_SUCCESS(Status))
- {
- WdmAudOpenSysAudioDeviceInterfaces(DeviceExtension, SymbolicLinkList);
- FreeItem(SymbolicLinkList);
- }
-
-
- Status = IoRegisterPlugPlayNotification(EventCategoryDeviceInterfaceChange,
- PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES,
- (PVOID)&KSCATEGORY_SYSAUDIO,
- DeviceObject->DriverObject,
- DeviceInterfaceChangeCallback,
- (PVOID)DeviceExtension,
- &DeviceExtension->SysAudioNotification);
- }
- else
- {
- Entry = (SYSAUDIO_ENTRY*)AllocateItem(NonPagedPool, sizeof(SYSAUDIO_ENTRY));
- if (!Entry)
- {
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
-
- Length = wcslen(DeviceName.Buffer) + 1;
- Entry->SymbolicLink.Length = 0;
- Entry->SymbolicLink.MaximumLength = Length * sizeof(WCHAR);
- Entry->SymbolicLink.Buffer = AllocateItem(NonPagedPool, Entry->SymbolicLink.MaximumLength);
-
- if (!Entry->SymbolicLink.Buffer)
- {
- FreeItem(Entry);
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- Status = RtlAppendUnicodeStringToString(&Entry->SymbolicLink, &DeviceName);
-
- if (!NT_SUCCESS(Status))
- {
- FreeItem(Entry->SymbolicLink.Buffer);
- FreeItem(Entry);
- return Status;
- }
-
- DPRINT("Opening device %S\n", Entry->SymbolicLink.Buffer);
- Status = WdmAudOpenSysAudioDevice(Entry->SymbolicLink.Buffer, &hSysAudio);
- if (!NT_SUCCESS(Status))
- {
- DPRINT1("Failed to open sysaudio %x\n", Status);
- FreeItem(Entry->SymbolicLink.Buffer);
- FreeItem(Entry);
- return Status;
- }
-
- InsertTailList(&DeviceExtension->SysAudioDeviceList, &Entry->Entry);
- DeviceExtension->NumSysAudioDevices++;
-
- /* get the file object */
- Status = ObReferenceObjectByHandle(hSysAudio, FILE_READ_DATA | FILE_WRITE_DATA, *IoFileObjectType, KernelMode, (PVOID*)&FileObject, NULL);
- if (!NT_SUCCESS(Status))
- {
- DPRINT1("Failed to reference FileObject %x\n", Status);
- ZwClose(hSysAudio);
- return Status;
- }
- DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
- DeviceExtension->hSysAudio = hSysAudio;
- DeviceExtension->FileObject = FileObject;
- }
-
- return Status;
-}
-
-NTSTATUS
-WdmAudRegisterDeviceInterface(
- IN PDEVICE_OBJECT PhysicalDeviceObject,
- IN PWDMAUD_DEVICE_EXTENSION DeviceExtension)
-{
- NTSTATUS Status;
- UNICODE_STRING SymbolicLinkName;
-
- Status = IoRegisterDeviceInterface(PhysicalDeviceObject, &KSCATEGORY_WDMAUD, NULL, &SymbolicLinkName);
- if (NT_SUCCESS(Status))
- {
- IoSetDeviceInterfaceState(&SymbolicLinkName, TRUE);
- RtlFreeUnicodeString(&SymbolicLinkName);
- //DeviceExtension->DeviceInterfaceSupport = TRUE;
- return Status;
- }
-
- return Status;
-}
-
-NTSTATUS
-WdmAudOpenSysaudio(
- IN PDEVICE_OBJECT DeviceObject,
- IN PWDMAUD_CLIENT *pClient)
-{
- PWDMAUD_CLIENT Client;
- PWDMAUD_DEVICE_EXTENSION DeviceExtension;
-
- /* get device extension */
- DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
- if (!DeviceExtension->NumSysAudioDevices)
- {
- /* wdmaud failed to open sysaudio */
- return STATUS_UNSUCCESSFUL;
- }
-
- /* sanity check */
- ASSERT(!IsListEmpty(&DeviceExtension->SysAudioDeviceList));
-
- /* allocate client context struct */
- Client = AllocateItem(NonPagedPool, sizeof(WDMAUD_CLIENT));
-
- /* check for allocation failure */
- if (!Client)
- {
- /* not enough memory */
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- /* zero client context struct */
- RtlZeroMemory(Client, sizeof(WDMAUD_CLIENT));
-
- /* initialize mixer event list */
- InitializeListHead(&Client->MixerEventList);
-
- /* store result */
- *pClient = Client;
-
- /* insert client into list */
- ExInterlockedInsertTailList(&DeviceExtension->WdmAudClientList, &Client->Entry, &DeviceExtension->Lock);
-
- /* done */
- return STATUS_SUCCESS;
-}
projects / reactos.git / blobdiff