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123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
#ifndef _SYSAUDIO_PCH_
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#define _SYSAUDIO_PCH_
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#include <portcls.h>
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typedef struct
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{
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HANDLE PinHandle; // handle to audio irp pin
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ULONG References; // number of clients having a reference to this audio irp pin
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}PIN_INFO;
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typedef struct
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{
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LIST_ENTRY Entry; // device entry for KsAudioDeviceList
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UNICODE_STRING DeviceName; // symbolic link of audio device
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HANDLE Handle; // handle to audio device
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PFILE_OBJECT FileObject; // file objecto to audio device
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//PIN_INFO * Pins; // array of PIN_INFO
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}KSAUDIO_DEVICE_ENTRY, *PKSAUDIO_DEVICE_ENTRY;
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typedef struct
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{
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KSDEVICE_HEADER KsDeviceHeader; // ks streaming header - must always be first item in device extension
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PDEVICE_OBJECT PhysicalDeviceObject; // pdo
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PDEVICE_OBJECT NextDeviceObject; // lower device object
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ULONG NumberOfKsAudioDevices; // number of audio devices
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LIST_ENTRY KsAudioDeviceList; // audio device list
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PVOID KsAudioNotificationEntry; // ks audio notification hook
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PVOID EchoCancelNotificationEntry; // ks echo cancel notification hook
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KSPIN_LOCK Lock; // audio device list mutex
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PFILE_OBJECT KMixerFileObject; // mixer file object
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HANDLE KMixerHandle; // mixer file handle
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}SYSAUDIODEVEXT, *PSYSAUDIODEVEXT;
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// struct DISPATCH_CONTEXT
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//
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// This structure is used to dispatch read / write / device io requests
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// It is stored in the file object FsContext2 member
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// Note: FsContext member is reserved for ks object header
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typedef struct
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{
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KSOBJECT_HEADER ObjectHeader; // pin object header
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HANDLE Handle; // audio irp pin handle
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ULONG PinId; // pin id of device
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PKSAUDIO_DEVICE_ENTRY AudioEntry; // pointer to audio device entry
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HANDLE hMixerPin; // handle to mixer pin
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}DISPATCH_CONTEXT, *PDISPATCH_CONTEXT;
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NTSTATUS
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SysAudioAllocateDeviceHeader(
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IN SYSAUDIODEVEXT *DeviceExtension);
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NTSTATUS
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SysAudioRegisterDeviceInterfaces(
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IN PDEVICE_OBJECT DeviceObject);
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NTSTATUS
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SysAudioRegisterNotifications(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT DeviceObject);
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NTSTATUS
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SysAudioHandleProperty(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp);
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NTSTATUS
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SysAudioOpenKMixer(
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IN SYSAUDIODEVEXT *DeviceExtension);
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NTSTATUS
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OpenDevice(
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IN PUNICODE_STRING DeviceName,
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IN PHANDLE HandleOut,
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IN PFILE_OBJECT * FileObjectOut);
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PKSAUDIO_DEVICE_ENTRY
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GetListEntry(
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IN PLIST_ENTRY Head,
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IN ULONG Index);
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NTSTATUS
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NTAPI
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DispatchCreateSysAudioPin(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp);
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ULONG
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GetDeviceCount(
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PSYSAUDIODEVEXT DeviceExtension,
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BOOL WaveIn);
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NTSTATUS
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GetPinInstanceCount(
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PKSAUDIO_DEVICE_ENTRY Entry,
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PKSPIN_CINSTANCES PinInstances,
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PKSPIN_CONNECT PinConnect);
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NTSTATUS
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ComputeCompatibleFormat(
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IN PKSAUDIO_DEVICE_ENTRY Entry,
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IN ULONG PinId,
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IN PKSDATAFORMAT_WAVEFORMATEX ClientFormat,
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OUT PKSDATAFORMAT_WAVEFORMATEX MixerFormat);
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PVOID
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AllocateItem(
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IN POOL_TYPE PoolType,
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IN SIZE_T NumberOfBytes);
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VOID
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FreeItem(
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IN PVOID Item);
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#endif /* _SYSAUDIO_PCH_ */
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