reactos/drivers/wdm/audio/sysaudio/sysaudio.h

   1 #include <portcls.h>
   2
   3 typedef struct
   4 {
   5     HANDLE PinHandle;                       // handle to audio irp pin
   6     ULONG References;                       // number of clients having a reference to this audio irp pin
   7 }PIN_INFO;
   8
   9 typedef struct
  10 {
  11     LIST_ENTRY Entry;                                  // device entry for KsAudioDeviceList
  12     UNICODE_STRING DeviceName;                         // symbolic link of audio device
  13
  14     HANDLE Handle;                          // handle to audio device
  15     PFILE_OBJECT FileObject;                // file objecto to audio device
  16
  17     //PIN_INFO * Pins;                        // array of PIN_INFO
  18 }KSAUDIO_DEVICE_ENTRY, *PKSAUDIO_DEVICE_ENTRY;
  19
  20 typedef struct
  21 {
  22     KSDEVICE_HEADER KsDeviceHeader;                     // ks streaming header - must always be first item in device extension
  23     PDEVICE_OBJECT PhysicalDeviceObject;                // pdo
  24     PDEVICE_OBJECT NextDeviceObject;                    // lower device object
  25     ULONG NumberOfKsAudioDevices;                       // number of audio devices
  26
  27     LIST_ENTRY KsAudioDeviceList;                       // audio device list
  28     PVOID KsAudioNotificationEntry;                     // ks audio notification hook
  29     PVOID EchoCancelNotificationEntry;                  // ks echo cancel notification hook
  30     KSPIN_LOCK Lock;                                    // audio device list mutex
  31
  32     PFILE_OBJECT KMixerFileObject;                      // mixer file object
  33     HANDLE KMixerHandle;                                // mixer file handle
  34
  35 }SYSAUDIODEVEXT, *PSYSAUDIODEVEXT;
  36
  37 // struct DISPATCH_CONTEXT
  38 //
  39 // This structure is used to dispatch read / write / device io requests
  40 // It is stored in the file object FsContext2 member
  41 // Note: FsContext member is reserved for ks object header
  42
  43 typedef struct
  44 {
  45     KSOBJECT_HEADER ObjectHeader;                        // pin object header
  46     HANDLE Handle;                                       // audio irp pin handle
  47     ULONG PinId;                                         // pin id of device
  48     PKSAUDIO_DEVICE_ENTRY AudioEntry;                 // pointer to audio device entry
  49
  50     HANDLE hMixerPin;                                    // handle to mixer pin
  51 }DISPATCH_CONTEXT, *PDISPATCH_CONTEXT;
  52
  53 NTSTATUS
  54 SysAudioAllocateDeviceHeader(
  55     IN SYSAUDIODEVEXT *DeviceExtension);
  56
  57 NTSTATUS
  58 SysAudioRegisterDeviceInterfaces(
  59     IN PDEVICE_OBJECT DeviceObject);
  60
  61 NTSTATUS
  62 SysAudioRegisterNotifications(
  63     IN PDRIVER_OBJECT  DriverObject,
  64     IN PDEVICE_OBJECT DeviceObject);
  65
  66 NTSTATUS
  67 SysAudioHandleProperty(
  68     PDEVICE_OBJECT DeviceObject,
  69     PIRP Irp);
  70
  71 NTSTATUS
  72 SysAudioOpenKMixer(
  73     IN SYSAUDIODEVEXT *DeviceExtension);
  74
  75 NTSTATUS
  76 OpenDevice(
  77     IN PUNICODE_STRING DeviceName,
  78     IN PHANDLE HandleOut,
  79     IN PFILE_OBJECT * FileObjectOut);
  80
  81 PKSAUDIO_DEVICE_ENTRY
  82 GetListEntry(
  83     IN PLIST_ENTRY Head,
  84     IN ULONG Index);
  85
  86 NTSTATUS
  87 NTAPI
  88 DispatchCreateSysAudioPin(
  89     IN  PDEVICE_OBJECT DeviceObject,
  90     IN  PIRP Irp);
  91
  92 ULONG
  93 GetDeviceCount(
  94     PSYSAUDIODEVEXT DeviceExtension,
  95     BOOL WaveIn);
  96
  97 NTSTATUS
  98 GetPinInstanceCount(
  99     PKSAUDIO_DEVICE_ENTRY Entry,
 100     PKSPIN_CINSTANCES PinInstances,
 101     PKSPIN_CONNECT PinConnect);
 102
 103 NTSTATUS
 104 ComputeCompatibleFormat(
 105     IN PKSAUDIO_DEVICE_ENTRY Entry,
 106     IN ULONG PinId,
 107     IN PKSDATAFORMAT_WAVEFORMATEX ClientFormat,
 108     OUT PKSDATAFORMAT_WAVEFORMATEX MixerFormat);
 109
 110 PVOID
 111 AllocateItem(
 112     IN POOL_TYPE PoolType,
 113     IN SIZE_T NumberOfBytes);
 114
 115 VOID
 116 FreeItem(
 117     IN PVOID Item);
 118