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/*++
Copyright (c) 1995-1998 Microsoft Corporation
Module Name:
rcafltr.c
Abstract:
RCA Filter property sets.
Author:
Richard Machin (RMachin)
Revision History:
Who When What -------- -------- ---------------------------------------------- RMachin 2-25-97 stolen/adapted from msfsread and mswaveio DChen 3-25-98 Clean up PinDispatchCreate and PinDispatchClose JameelH 4-18-98 Cleanup SPATHER 4-20-99 Cleanup. Separated NDIS parts from KS parts.
Notes:
--*/
#include <precomp.h>
#define MODULE_NUMBER MODULE_FLT
#define _FILENUMBER 'RTLF'
#define STREAM_BUFFER_SIZE 8000
#define STREAM_BYTES_PER_SAMPLE 1
NTSTATUSPinAllocatorFramingEx( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PKSALLOCATOR_FRAMING_EX Framing );
NTSTATUSGetStreamAllocator( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID * AllocatorHandle );
NTSTATUSSetStreamAllocator( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID * AllocatorHandle );
NTSTATUSRCASetProposedDataFormat( IN PIRP Irp, IN PKSPROPERTY Property, IN PKSDATAFORMAT DataFormat );
#pragma alloc_text(PAGE, PnpAddDevice)
#pragma alloc_text(PAGE, FilterDispatchCreate)
#pragma alloc_text(PAGE, PinDispatchCreate)
#pragma alloc_text(PAGE, FilterDispatchClose)
#pragma alloc_text(PAGE, FilterDispatchIoControl)
#pragma alloc_text(PAGE, FilterTopologyProperty)
#pragma alloc_text(PAGE, FilterPinProperty)
#pragma alloc_text(PAGE, FilterPinInstances)
#pragma alloc_text(PAGE, FilterPinIntersection)
#ifdef ALLOC_DATA_PRAGMA
#pragma data_seg("PAGEDATA")
#endif // ALLOC_DATA_PRAGMA
const KSDISPATCH_TABLE FilterDispatchTable ={ FilterDispatchIoControl, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, FilterDispatchClose, NULL, NULL, NULL, NULL, NULL};
//
// Make these two a single table if there are no special dispatch funcs
// for the devio PIN..
//
static DEFINE_KSDISPATCH_TABLE( PinDevIoDispatchTable, PinDispatchIoControl, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, PinDispatchClose, NULL, NULL, NULL, NULL, NULL);
static DEFINE_KSDISPATCH_TABLE( PinFileIoDispatchTable, PinDispatchIoControl, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, KsDispatchInvalidDeviceRequest, PinDispatchClose, NULL, NULL, NULL, NULL, NULL);
//
// Bridge Pin Properties
//
DEFINE_KSPROPERTY_TABLE(BridgePinProperties){ DEFINE_KSPROPERTY_ITEM_PIN_PROPOSEDATAFORMAT(RCASetProposedDataFormat)};
DEFINE_KSPROPERTY_TABLE(BridgeConnectionProperties){ DEFINE_KSPROPERTY_ITEM_CONNECTION_ALLOCATORFRAMING_EX(PinAllocatorFramingEx)};
DEFINE_KSPROPERTY_SET_TABLE(BridgePropertySets){ DEFINE_KSPROPERTY_SET(&KSPROPSETID_Pin, SIZEOF_ARRAY(BridgePinProperties), BridgePinProperties, 0, NULL), DEFINE_KSPROPERTY_SET(&KSPROPSETID_Connection, SIZEOF_ARRAY(BridgeConnectionProperties), BridgeConnectionProperties, 0, NULL)};
//
// DevIo Pin Properties
//
#if AUDIO_SINK_FLAG
DEFINE_KSPROPERTY_TABLE(DevIoStreamProperties){ // DEFINE_KSPROPERTY_ITEM_STREAM_INTERFACE(GetInterface),
// DEFINE_KSPROPERTY_ITEM_STREAM_PRESENTATIONTIME(GetPresentationTime, SetPresentationTime),
// DEFINE_KSPROPERTY_ITEM_STREAM_PRESENTATIONEXTENT(GetPresentationExtent)
DEFINE_KSPROPERTY_ITEM_STREAM_ALLOCATOR(GetStreamAllocator,SetStreamAllocator)};#endif
DEFINE_KSPROPERTY_TABLE(DevIoConnectionProperties){ DEFINE_KSPROPERTY_ITEM_CONNECTION_STATE(PinDeviceState,PinDeviceState ),
DEFINE_KSPROPERTY_ITEM_CONNECTION_ALLOCATORFRAMING_EX(PinAllocatorFramingEx)};
DEFINE_KSPROPERTY_SET_TABLE(DevIoPropertySets){#if AUDIO_SINK_FLAG
DEFINE_KSPROPERTY_SET(&KSPROPSETID_Stream, SIZEOF_ARRAY(DevIoStreamProperties), DevIoStreamProperties, 0, NULL),#endif
DEFINE_KSPROPERTY_SET(&KSPROPSETID_Connection, SIZEOF_ARRAY(DevIoConnectionProperties), DevIoConnectionProperties, 0, NULL)};
DEFINE_KSEVENT_TABLE(ConnectionItems){ DEFINE_KSEVENT_ITEM(KSEVENT_CONNECTION_ENDOFSTREAM, sizeof(KSEVENTDATA), 0, NULL, NULL, NULL)};
DEFINE_KSEVENT_SET_TABLE(EventSets){ DEFINE_KSEVENT_SET(&KSEVENTSETID_Connection, SIZEOF_ARRAY(ConnectionItems), ConnectionItems)};
// defined in KS.H
static const WCHAR DeviceTypeName[] = KSSTRING_Filter;
//
// The following structures build hierarchically into table of filter properties
// used by the KS library.
//
// "The KSDISPATCH_TABLE structure is used for dispatching IRPs to various
// types of objects contained under a single DRIVER_OBJECT."
//
static DEFINE_KSCREATE_DISPATCH_TABLE(DeviceCreateItems){ DEFINE_KSCREATE_ITEM(FilterDispatchCreate, DeviceTypeName, 0)};
// 'node' is basically not PINS -- i.e. functional blocks of the filter
static GUID Nodes[] ={ STATICGUIDOF(KSCATEGORY_MEDIUMTRANSFORM)};
//
// Topology = Pins+Nodes. We have one filter node to which two Pins connect.
// Note each of our Pins is half-duplex. (If a Pin were full-duplex, there would be two
// connections to the filter node). KSFILTER_NODE is the filter itself, i.e. node -1. From
// the doc:
// "The simplest filter (2 pins) would contain just one connection, which would be from
// Node -1, Pin 0, to Node -1, Pin 1."
//
static const KSTOPOLOGY_CONNECTION RenderConnections[] ={ { KSFILTER_NODE, ID_DEVIO_PIN, 0, 0}, { 0, 1, KSFILTER_NODE, ID_BRIDGE_PIN}};
static const KSTOPOLOGY_CONNECTION CaptureConnections[] ={ { KSFILTER_NODE, ID_BRIDGE_PIN, 0, 0}, { 0, 1, KSFILTER_NODE, ID_DEVIO_PIN}};
// what this filter does -- in our case, transform devio stream to net bridge
static GUID TopologyNodes[] ={ STATICGUIDOF(KSCATEGORY_RENDER), STATICGUIDOF(KSCATEGORY_BRIDGE), STATICGUIDOF(KSCATEGORY_CAPTURE)};
// this is the composite filter topology, defining the above Pins, Nodes and Connections
const KSTOPOLOGY RenderTopology ={ 0,//2, // Functional category render, bridge
NULL, //(GUID*) &TopologyNodes[ 0 ],
2, (GUID*) &TopologyNodes[0], // Nodes
SIZEOF_ARRAY( RenderConnections ), RenderConnections};
const KSTOPOLOGY CaptureTopology ={ 0,//2, // Functional category bridge, capture
NULL, //(GUID*) &TopologyNodes[ 1 ],
2, (GUID*) &TopologyNodes[1], // Nodes
SIZEOF_ARRAY( CaptureConnections ), CaptureConnections};
//
// "The DEFINE_KSPROPERTY_PINSET macro allows easier definition of a pin
// property set, as only a few parameters actually change from set to set."
// Used by KS to route PIN queries
//
static DEFINE_KSPROPERTY_PINSET( FilterPinProperties, // name of the set
FilterPinProperty, // handler
FilterPinInstances, // instances query handler
FilterPinIntersection); // intersection query handler
// Used by KS to route Topology queries
static DEFINE_KSPROPERTY_TOPOLOGYSET( FilterTopologyProperties, // name of the set
FilterTopologyProperty); // topology query handler
// A table of property sets for Topology and Pins.
static DEFINE_KSPROPERTY_SET_TABLE(FilterPropertySets){ DEFINE_KSPROPERTY_SET(&KSPROPSETID_Pin, SIZEOF_ARRAY(FilterPinProperties), FilterPinProperties, 0, NULL), DEFINE_KSPROPERTY_SET(&KSPROPSETID_Topology, SIZEOF_ARRAY(FilterTopologyProperties), FilterTopologyProperties, 0, NULL)};
//
// a table of interfaces describing Pin interfaces. In our case,
// all Pins have standard byte-position based streaming interface.
//
static DEFINE_KSPIN_INTERFACE_TABLE(PinInterfaces){ DEFINE_KSPIN_INTERFACE_ITEM(KSINTERFACESETID_Standard, // standard streaming
KSINTERFACE_STANDARD_STREAMING) // based on byte- rather than time-position
};
//
// 'Medium' for Pin communications -- standard IRP-based device-io
//
static DEFINE_KSPIN_MEDIUM_TABLE(PinMedia){ DEFINE_KSPIN_MEDIUM_ITEM(KSMEDIUMSETID_Standard, KSMEDIUM_TYPE_ANYINSTANCE)};
//
// Data ranges = collective formats supported on our Pins.
//
//
// Define the wildcard data format.
//
const KSDATARANGE WildcardDataFormat ={ sizeof( KSDATARANGE ), 0, // ULONG Flags
0, // ULONG SampleSize
0, // ULONG Reserved
STATICGUIDOF( KSDATAFORMAT_TYPE_STREAM ), //STREAM
STATICGUIDOF( KSDATAFORMAT_SUBTYPE_WILDCARD ), STATICGUIDOF( KSDATAFORMAT_SPECIFIER_NONE ) //NONE
};
const KSDATARANGE SuperWildcardDataFormat = { sizeof(KSDATARANGE), 0, 0, 0, STATICGUIDOF( KSDATAFORMAT_TYPE_WILDCARD ), //STREAM
STATICGUIDOF( KSDATAFORMAT_SUBTYPE_WILDCARD ), STATICGUIDOF( KSDATAFORMAT_SPECIFIER_WILDCARD ) //NONE
};
#if AUDIO_SINK_FLAG
//
// Data ranges = collective formats supported on our Pins.
// In our case, streams of unknown data
//typedef struct {
// KSDATARANGE DataRange;
// ULONG MaximumChannels;
// ULONG MinimumBitsPerSample;
// ULONG MaximumBitsPerSample;
// ULONG MinimumSampleFrequency;
// ULONG MaximumSampleFrequency;
//} KSDATARANGE_AUDIO, *PKSDATARANGE_AUDIO;
const KSDATARANGE_AUDIO AudioDataFormat = { { sizeof(KSDATARANGE_AUDIO), // (KSDATARANGE_AUDIO),
0, 0, 0, STATIC_KSDATAFORMAT_TYPE_AUDIO, // major format
STATIC_KSDATAFORMAT_SUBTYPE_PCM, // sub format (WILDCARD?)
STATIC_KSDATAFORMAT_SPECIFIER_WAVEFORMATEX }, 1, // 1 channels
8, 8, 8000, // 22050,
8000 // 22050
};
#endif
//
// Array of above (only one for us).
// TBS: we should split this out into an array of specific types when we get more
// sophisticated in identifying the type of stream handled by the VC via CallParams
// -- e.g. audio, video with subformats of compression types. Eventually, we should
// create a bridge PIN of format corresponding to callparams info, then expose the
// full range of these types via the PIN factory. The PinDispatchCreate handler
// would look for a bridge PIN of the corresponding type.
//
PKSDATARANGE PinDevIoRanges[] ={#if AUDIO_SINK_FLAG
//(PKSDATARANGE)&AudioDataFormat
(PKSDATARANGE)&SuperWildcardDataFormat#else
(PKSDATARANGE)&WildcardDataFormat#endif
};
static const KSDATARANGE PinFileIoRange ={ sizeof(KSDATARANGE), 0, 0, 0, STATICGUIDOF( KSDATAFORMAT_TYPE_STREAM ), STATICGUIDOF( KSDATAFORMAT_SUBTYPE_NONE ), STATICGUIDOF( KSDATAFORMAT_SPECIFIER_VC_ID ) //KSDATAFORMAT_SPECIFIER_FILENAME
};
//
// Array of above (only one for us).
// TBS: we should split this out into an array of specific types when we get more
// sophisticated in identifying the type of stream handled by the VC via CallParams
// -- e.g. audio, video with subformats of compression types. Eventually, we should
// create a bridge PIN of format corresponding to callparams info, then expose the
// full range of these types via the PIN factory. The PinDispatchCreate handler
// would look for a bridge PIN of the corresponding type.
//
static const PKSDATARANGE PinFileIoRanges[] ={ (PKSDATARANGE)&PinFileIoRange};
//
// "The KSPIN_DESCRIPTOR structure contains the more dynamic information
// which a device would keep on a pin when using the built-in handlers
// for dealing with the Pin property set, and connections in general."
//
// We pass this to KS in our FilterPinPropertyHandler when KS wants to know what
// we look like, and let KS pick the bones out of it.
//
DEFINE_KSPIN_DESCRIPTOR_TABLE(CapturePinDescriptors){ DEFINE_KSPIN_DESCRIPTOR_ITEMEX( // PIN 0 bridge
SIZEOF_ARRAY(PinInterfaces), PinInterfaces, SIZEOF_ARRAY(PinMedia), PinMedia, SIZEOF_ARRAY(PinFileIoRanges), (PKSDATARANGE*)PinFileIoRanges, KSPIN_DATAFLOW_IN, KSPIN_COMMUNICATION_BRIDGE, (GUID*) &TopologyNodes[1], (GUID*) &TopologyNodes[1]), // no CSA connections to this PIN
DEFINE_KSPIN_DESCRIPTOR_ITEMEX( // PIN 1 output
SIZEOF_ARRAY(PinInterfaces), PinInterfaces, SIZEOF_ARRAY(PinMedia), PinMedia, SIZEOF_ARRAY(PinDevIoRanges), (PKSDATARANGE*)PinDevIoRanges, KSPIN_DATAFLOW_OUT, KSPIN_COMMUNICATION_BOTH, // SOURCE+SINK
(GUID*) &TopologyNodes[2], (GUID*) &TopologyNodes[2])};
DEFINE_KSPIN_DESCRIPTOR_TABLE(RenderPinDescriptors){ DEFINE_KSPIN_DESCRIPTOR_ITEMEX( // PIN 0 bridge
SIZEOF_ARRAY(PinInterfaces), PinInterfaces, SIZEOF_ARRAY(PinMedia), PinMedia, SIZEOF_ARRAY(PinFileIoRanges), (PKSDATARANGE*)PinFileIoRanges, KSPIN_DATAFLOW_OUT, KSPIN_COMMUNICATION_BRIDGE, (GUID*) &TopologyNodes[1], (GUID*) &TopologyNodes[1]), // no CSA connections to this PIN
DEFINE_KSPIN_DESCRIPTOR_ITEMEX( // PIN 1 input
SIZEOF_ARRAY(PinInterfaces), PinInterfaces, SIZEOF_ARRAY(PinMedia), PinMedia, SIZEOF_ARRAY(PinDevIoRanges), (PKSDATARANGE*)PinDevIoRanges, KSPIN_DATAFLOW_IN, KSPIN_COMMUNICATION_SINK, (GUID*) &TopologyNodes[0], (GUID*) &TopologyNodes[0]) // we receive IRPs, not produce them
};
// How many instances of a Pin we can have, one entry for each Pin.
const KSPIN_CINSTANCES PinInstances[ MAXNUM_PIN_TYPES ] ={ // Indeterminate number of possible connections.
{ 1, 0 },
{ 1, 0 }};
//
// Now the Pin dispatch info
//
static const WCHAR PinTypeName[] = KSSTRING_Pin; // in KS.h
static DEFINE_KSCREATE_DISPATCH_TABLE(FilterObjectCreateDispatch){ DEFINE_KSCREATE_ITEM(PinDispatchCreate, PinTypeName, 0)};
#ifdef ALLOC_DATA_PRAGMA
#pragma data_seg()
#endif // ALLOC_DATA_PRAGMA
NTSTATUSPnpAddDevice( IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT PhysicalDeviceObject )/*++
Routine Description:
When a new device is detected, PnP calls this entry point with the new PhysicalDeviceObject (PDO). The driver creates an associated FunctionalDeviceObject (FDO).
Note that we keep global device info in a global structure, RcaGlobal. This info is common to all devices on this driver object (such as NDIS inititaliztion info, adapter queue etc). Since we get called here for EACH interface (capture, render) we can't keep global ingfo in the FDO device extension.
Arguments:
DriverObject - Pointer to the driver object.
PhysicalDeviceObject - Pointer to the new physical device object.
Return Values:
STATUS_SUCCESS or an appropriate error condition.
--*/{ PDEVICE_OBJECT FunctionalDeviceObject = NULL, PnpDeviceObject = NULL; NTSTATUS Status = STATUS_SUCCESS;
RCADEBUGP(RCA_INFO, ("PnPAddDevice: Enter\n"));
do { Status = IoCreateDevice(DriverObject, sizeof(DEVICE_INSTANCE), NULL, FILE_DEVICE_KS, 0, FALSE, &FunctionalDeviceObject); if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PnpAddDevice: " "IoCreateDevice() failed - Status == 0x%x\n", Status)); break; } DeviceExtension = (PDEVICE_INSTANCE)FunctionalDeviceObject->DeviceExtension; RtlCopyMemory(DeviceExtension->PinInstances, PinInstances, sizeof(PinInstances)); RcaGlobal.FilterCreateItems[ FilterTypeRender ].Create = FilterDispatchCreate; RcaGlobal.FilterCreateItems[ FilterTypeRender ].Context = (PVOID) FilterTypeRender; RtlStringFromGUID(&KSCATEGORY_RENDER, &RcaGlobal.FilterCreateItems[ FilterTypeRender ].ObjectClass); RcaGlobal.FilterCreateItems[ FilterTypeRender ].SecurityDescriptor = NULL; RcaGlobal.FilterCreateItems[ FilterTypeRender ].Flags = 0; RcaGlobal.FilterCreateItems[ FilterTypeCapture ].Create = FilterDispatchCreate; RcaGlobal.FilterCreateItems[ FilterTypeCapture ].Context = (PVOID) FilterTypeCapture; RtlStringFromGUID(&KSCATEGORY_CAPTURE, &RcaGlobal.FilterCreateItems[ FilterTypeCapture ].ObjectClass); RcaGlobal.FilterCreateItems[ FilterTypeCapture ].SecurityDescriptor = NULL; RcaGlobal.FilterCreateItems[ FilterTypeCapture ].Flags = 0; //
// This object uses KS to perform access through the DeviceCreateItems.
//
Status = KsAllocateDeviceHeader(&DeviceExtension->Header, SIZEOF_ARRAY(RcaGlobal.FilterCreateItems), RcaGlobal.FilterCreateItems); if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PnpAddDevice: " "KsAllocateDeviceHeader() failed - Status == 0x%x\n", Status)); break; } PnpDeviceObject = IoAttachDeviceToDeviceStack(FunctionalDeviceObject, PhysicalDeviceObject);
if (PnpDeviceObject == NULL) { RCADEBUGP(RCA_ERROR, ("PnpAddDevice: " "Could not attach our FDO to the device stack\n")); break; }
KsSetDevicePnpAndBaseObject(DeviceExtension->Header, PnpDeviceObject, FunctionalDeviceObject); FunctionalDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING; FunctionalDeviceObject->Flags |= DO_POWER_PAGABLE; //
// Finally, initialize as a Co-NDIS client.
//
if (RcaGlobal.bProtocolInitialized == FALSE) { RCA_CO_NDIS_HANDLERS Handlers;
Handlers.ReceiveCallback = RCAReceiveCallback; Handlers.SendCompleteCallback = RCASendCompleteCallback; Handlers.VcCloseCallback = RCAVcCloseCallback;
Status = RCACoNdisInitialize(&Handlers, RCA_SAP_REG_TIMEOUT);
if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PnpAddDevice: " "Failed to initialize as a Co-Ndis client - Status == 0x%x\n", Status)); break; }
RcaGlobal.bProtocolInitialized = TRUE; }
} while (FALSE);
if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PnpAddDevice: " "Bad Status (0x%x) - calling IoDeleteDevice() on FDO\n", Status)); if (PnpDeviceObject) IoDetachDevice(PnpDeviceObject);
if (FunctionalDeviceObject) IoDeleteDevice(FunctionalDeviceObject); }
RCADEBUGP(RCA_INFO, ("PnpAddDevice: " "Exit - Returning Status == 0x%x\n", Status));
return(Status);}
NTSTATUSFilterDispatchClose( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Closes a previously opened Filter instance. This can only occur after the Pins have been closed, as they reference the Filter object when created. This also implies that all the resources the Pins use have been released or cleaned up.
Arguments:
DeviceObject - Device object on which the close is occuring.
Irp - Close Irp.
Return Values:
Returns STATUS_SUCCESS.
--*/{ PFILTER_INSTANCE FilterInstance;#if DBG
KIRQL EntryIrql;#endif
RCA_GET_ENTRY_IRQL(EntryIrql);
RCADEBUGP(RCA_INFO, ("FilterDispatchClose: Enter\n"));
FilterInstance = (PFILTER_INSTANCE)IoGetCurrentIrpStackLocation(Irp)->FileObject->FsContext;
//
// Notify the software bus that the device has been closed.
//
KsDereferenceSoftwareBusObject(((PDEVICE_INSTANCE)DeviceObject->DeviceExtension)->Header);
//
// These were allocated during the creation of the Filter instance.
//
KsFreeObjectHeader(FilterInstance->Header); RCAFreeMem(FilterInstance);
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
RCA_CHECK_EXIT_IRQL(EntryIrql);
RCADEBUGP(RCA_INFO, ("FilterDispatchClose: " "Exit - Returning STATUS_SUCCESS\n")); return(STATUS_SUCCESS);}
NTSTATUSFilterDispatchIoControl( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Dispatches property requests on a Filter instance. These are enumerated in the FilterPropertySets list.
Arguments:
DeviceObject - Device object on which the device control is occuring.
Irp - Device control Irp.
Return Values:
Returns STATUS_SUCCESS if the property was successfully manipulated, else an error.
--*/{ PIO_STACK_LOCATION IrpStack; NTSTATUS Status;
RCADEBUGP(RCA_INFO, ("FilterDispatchIoControl: Enter\n"));
IrpStack = IoGetCurrentIrpStackLocation(Irp); switch(IrpStack->Parameters.DeviceIoControl.IoControlCode) { case IOCTL_KS_PROPERTY: RCADEBUGP(RCA_INFO, ("FilterDispatchIoControl: KsPropertyHandler\n")); Status = KsPropertyHandler(Irp, SIZEOF_ARRAY(FilterPropertySets), FilterPropertySets); break;
default: RCADEBUGP(RCA_WARNING, ("FilterDispatchIoControl: " "Invalid Device Request - Io Control Code 0x%x\n", IrpStack->Parameters.DeviceIoControl.IoControlCode));
Status = KsDefaultDeviceIoCompletion(DeviceObject, Irp);
RCADEBUGP(RCA_WARNING, ("FilterDispatchIoControl: " "Returning Status == 0x%x\n", Status)); return Status; }
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT); RCADEBUGP(RCA_INFO, ("FilterDispatchIoControl: " "Exit - Returning Status == 0x%x\n", Status)); return Status;}
NTSTATUSFilterTopologyProperty( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID Data )/*++
Routine Description:
This is the general handler for all Topology property requests, and is used to route the request to the KsTopologyPropertyHandler using the FilterTopology information. This request would have been routed through FilterDispatchIoControl, then KsPropertyHandler, which would have then called the handler for the property item, which is this function.
Arguments:
Irp - Device control Irp.
Property - Specific property request.
Data - Property data.
Return Values:
Returns STATUS_SUCCESS if the property was successfully manipulated, else an error.
--*/{ PFILTER_INSTANCE FilterInstance; PIO_STACK_LOCATION irpSp; NTSTATUS Status = 0;
RCADEBUGP(RCA_INFO, ("FilterTopologyProperty: Enter\n"));
irpSp = IoGetCurrentIrpStackLocation( Irp );
FilterInstance = (PFILTER_INSTANCE)irpSp->FileObject->FsContext;
if (FilterInstance->FilterType == FilterTypeRender) { Status = KsTopologyPropertyHandler( Irp, Property, Data, &RenderTopology); RCADEBUGP(RCA_INFO, ("FilterTopologyProperty: " "Render device - Returning Status == 0x%x\n", Status)); return Status; } else { Status = KsTopologyPropertyHandler( Irp, Property, Data, &CaptureTopology); RCADEBUGP(RCA_INFO, ("FilterTopologyProperty: " "Capture device - Returning Status == 0x%x\n", Status)); return Status; }}
NTSTATUSFilterPinProperty( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID Data )/*++
Routine Description:
This is the general handler for most Pin property requests, and is used to route the request to the KsPinPropertyHandler using the PinDescriptors information. This request would have been routed through FilterDispatchIoControl, then KsPropertyHandler, which would have then called the handler for the property item, which is this function.
Arguments:
Irp - Device control Irp.
Property - Specific property request. This actually contains a PKSP_PIN pointer in most cases.
Data - Property data.
Return Values:
Returns STATUS_SUCCESS if the property was successfully manipulated, else an error.
--*/{ PFILTER_INSTANCE FilterInstance; PIO_STACK_LOCATION IrpStack; NTSTATUS Status = 0;
RCADEBUGP(RCA_INFO,("FilterPinProperty: Enter\n")); IrpStack = IoGetCurrentIrpStackLocation(Irp); FilterInstance = (PFILTER_INSTANCE)IrpStack->FileObject->FsContext;
RCADEBUGP(RCA_LOUD, ("FilterPinProperty: " "FilterInstance == 0x%x, Type == 0x%x, Property == 0x%x, Property Id == 0x%x\n", FilterInstance, FilterInstance->FilterType, Property, Property->Id)); Status = KsPinPropertyHandler(Irp, Property, Data, SIZEOF_ARRAY(RenderPinDescriptors), // same size both cases
(FilterInstance->FilterType == FilterTypeRender ? RenderPinDescriptors : CapturePinDescriptors));
RCADEBUGP(RCA_INFO, ("FilterPinProperty: " "Exit - Returning Status == 0x%x, Data == 0x%x, " "Irp->IoStatus.Information == 0x%x\n", Status, Data, Irp->IoStatus.Information));
return Status;}
NTSTATUSFilterPinInstances( IN PIRP Irp, IN PKSP_PIN pPin, OUT PKSPIN_CINSTANCES pCInstances )/*++
Routine Description:
Handles the KSPROPERTY_PIN_CINSTANCES property in the Pin property set. Returns the total possible and current number of Pin instances available for a Pin factory.
Arguments:
Irp - Device control Irp.
Pin - Specific property request followed by Pin factory identifier.
Instances - The place in which to return the instance information of the specified Pin factory.
Return Values:
returns STATUS_SUCCESS, else STATUS_INVALID_PARAMETER.
--*/{ PIO_STACK_LOCATION irpSp; PFILTER_INSTANCE FilterInstance;
RCADEBUGP(RCA_INFO, ("FilterPinInstances: Enter - " "Pin ID == 0x%x\n", pPin->PinId));
irpSp = IoGetCurrentIrpStackLocation(Irp);
FilterInstance = (PFILTER_INSTANCE)irpSp->FileObject->FsContext;
//
// This count maintanied by KS
//
*pCInstances = FilterInstance->PinInstances[pPin->PinId];
RCADEBUGP(RCA_LOUD, ("FilterPinInstances: " "Pin Instance == 0x%x\n", DeviceExtension->PinInstances[pPin->PinId])); Irp->IoStatus.Information = sizeof( KSPIN_CINSTANCES );
RCADEBUGP(RCA_INFO, ("FilterPinInstances: Exit - " "pCInstances == 0x%x, Irp->IoStatus.Information == 0x%x, " "Returning STATUS_SUCCESS\n", pCInstances, Irp->IoStatus.Information));
return STATUS_SUCCESS;}
//
// DEBUG - For debugging only - START
KSDATAFORMAT_WAVEFORMATEX MyWaveFormatPCM = { { sizeof(KSDATAFORMAT_WAVEFORMATEX), 0, 0, 0, STATIC_KSDATAFORMAT_TYPE_AUDIO, STATIC_KSDATAFORMAT_SUBTYPE_PCM, STATIC_KSDATAFORMAT_SPECIFIER_WAVEFORMATEX }, { WAVE_FORMAT_PCM, 1, 8000, 8000, 1, 8, 0 }};
KSDATAFORMAT_WAVEFORMATEX MyWaveFormatMULAW = { { sizeof(KSDATAFORMAT_WAVEFORMATEX), 0, 0, 0, STATIC_KSDATAFORMAT_TYPE_AUDIO, STATIC_KSDATAFORMAT_SUBTYPE_MULAW, STATIC_KSDATAFORMAT_SPECIFIER_WAVEFORMATEX }, { WAVE_FORMAT_MULAW, 1, 8000, 8000, 1, 8, 0 }};
// DEBUG - For debugging only - END
//
NTSTATUSRCAGenericIntersection( IN PIRP Irp, IN PKSDATARANGE DataRange, IN ULONG OutputBufferLength, OUT PVOID Data )/*++
Routine Description: This routine computes the intersection of a given data range with the data format specified by the app via the PIN_PROPOSEDATAFORMAT property.
Arguments:
Irp - Device control Irp. DataRange - Contains a specific data range to validate. OutputBufferLength - Length of the data buffer pointed to by "Data".
Data - The place in which to return the data format selected as the first intersection between the list of data ranges passed, and the acceptable formats.
Return Values:
returns STATUS_SUCCESS or STATUS_NO_MATCH, else STATUS_INVALID_PARAMETER, STATUS_BUFFER_TOO_SMALL, or STATUS_INVALID_BUFFER_SIZE.
--*/
{ BOOL bWCardFormat; PIO_STACK_LOCATION irpSp; PFILTER_INSTANCE pFilterInstance; PPIN_INSTANCE_BRIDGE pBridgePin; PKSDATARANGE DataRangeSource = NULL; BOOL bNeedReleaseLock = FALSE; NTSTATUS Status = STATUS_SUCCESS;
RCADEBUGP(RCA_INFO, ("RCAGenericIntersection: Enter\n"));
irpSp = IoGetCurrentIrpStackLocation(Irp);
pFilterInstance = (PFILTER_INSTANCE)irpSp->FileObject->FsContext;
pBridgePin = pFilterInstance->BridgePin;
bWCardFormat = IsEqualGUIDAligned(&DataRange->SubFormat, &SuperWildcardDataFormat.SubFormat) && IsEqualGUIDAligned(&DataRange->Specifier, &SuperWildcardDataFormat.Specifier);
RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: " "bWCardFormat == 0x%x\n", bWCardFormat)); do { if (pBridgePin) { RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePin); RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: Acquired Bridge Pin Lock\n"));
bNeedReleaseLock = TRUE; if ((DataRangeSource = (PKSDATARANGE)pBridgePin->pDataFormat) == NULL) { RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePin); RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: Released Bridge Pin Lock\n"));
bNeedReleaseLock = FALSE; } //
// DEBUG - FOR DEBUGGING ONLY - Start
if (g_ulHardcodeDataFormat == 1) { DataRangeSource = (PKSDATARANGE)&MyWaveFormatPCM; } else if (g_ulHardcodeDataFormat == 2) { DataRangeSource = (PKSDATARANGE)&MyWaveFormatMULAW; } // DEBUG - FOR DEBUGGING ONLY - End
//
}
if (DataRangeSource == NULL) { if (bWCardFormat) { RCADEBUGP(RCA_ERROR, ("RCAGenericIntersection: " "Input data format was wildcard and we have no format " "set - Setting Status == STATUS_NO_MATCH\n")); Status = STATUS_NO_MATCH; break;
} else { DataRangeSource = DataRange; } }
if (OutputBufferLength == 0) { Irp->IoStatus.Information = DataRangeSource->FormatSize; RCADEBUGP(RCA_INFO, ("RCAGenericIntersection: " "Output buffer length was zero, placing size of " "data range (0x%x) into Irp->IoStatus.Information, " "Setting Status == STATUS_BUFFER_OVERFLOW\n", DataRangeSource->FormatSize)); Status = STATUS_BUFFER_OVERFLOW; break; } if (OutputBufferLength == sizeof(ULONG)) { *(PULONG)Data = DataRangeSource->FormatSize; Irp->IoStatus.Information = sizeof(ULONG);
RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: " "Output buffer is one ULONG big, placing size of " "data range (0x%x) in output buffer, " "Setting Status == STATUS_SUCCESS\n", DataRangeSource->FormatSize)); Status = STATUS_SUCCESS; break;
} if (OutputBufferLength < DataRangeSource->FormatSize) { RCADEBUGP(RCA_ERROR, ("RCAGenericIntersection: " "Output buffer too small, Setting Status == STATUS_BUFFER_TOO_SMALL\n")); Status = STATUS_BUFFER_TOO_SMALL; break; } } while(FALSE);
if (Status == STATUS_SUCCESS) { Irp->IoStatus.Information = DataRangeSource->FormatSize;
RtlCopyMemory(Data, DataRangeSource, DataRangeSource->FormatSize);
RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: " "Copied data range to output, Leaving Status == STATUS_SUCCESS\n")); } if (bNeedReleaseLock) { RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePin); RCADEBUGP(RCA_LOUD, ("RCAGenericIntersection: Released Bridge Pin Lock\n"));
bNeedReleaseLock = FALSE; }
RCADEBUGP(RCA_INFO, ("RCAGenericIntersection: Exit - Returning Status == 0x%x\n", Status));
return Status;}
NTSTATUSRCAIntersect( IN PIRP Irp, IN PKSP_PIN Pin, IN PKSDATARANGE DataRange, OUT PVOID Data )/*++
Routine Description: This is the data range callback for KsPinDataIntersection, which is called by FilterPinIntersection to enumerate the given list of data ranges, looking for an acceptable match. If a data range is acceptable, a data format is copied into the return buffer. A STATUS_NO_MATCH continues the enumeration.
Arguments:
Irp - Device control Irp.
Pin - Specific property request followed by Pin factory identifier, followed by a KSMULTIPLE_ITEM structure. This is followed by zero or more data range structures. \This enumeration callback does not need to look at any of this though. It need only look at the specific pin identifier.
DataRange - Contains a specific data range to validate.
Data - The place in which to return the data format selected as the first intersection between the list of data ranges passed, and the acceptable formats.
Return Values:
returns STATUS_SUCCESS or STATUS_NO_MATCH, else STATUS_INVALID_PARAMETER, STATUS_BUFFER_TOO_SMALL, or STATUS_INVALID_BUFFER_SIZE.
--*/{ NTSTATUS Status = STATUS_SUCCESS; PFILTER_INSTANCE FilterInstance; PIO_STACK_LOCATION irpSp; ULONG OutputBufferLength; GUID SubFormat; BOOL SubFormatSet; BOOL CorrectAudioFormat = FALSE, WCardFormat = FALSE;
RCADEBUGP(RCA_INFO, ("RCAIntersect: Enter - " "DataRange size == %d\n", DataRange->FormatSize));
irpSp = IoGetCurrentIrpStackLocation(Irp);
FilterInstance = (PFILTER_INSTANCE)irpSp->FileObject->FsContext;
OutputBufferLength = irpSp->Parameters.DeviceIoControl.OutputBufferLength; RCADEBUGP(RCA_LOUD, ("RCAIntersect: OutputBufferLength == %d\n", OutputBufferLength));
//
// All the major/sub/specifier checking has been done by the handler.
//
if (DataRange->FormatSize < sizeof( KSDATAFORMAT )) { RCADEBUGP(RCA_ERROR, ("RCAIntersect: " "Format size is less than size of KSDATAFORMAT - " "Returning STATUS_NO_MATCH\n")); return STATUS_NO_MATCH; }
RCADEBUGP(RCA_LOUD, ("RCAIntersect: DataRange->FormatSize == 0x%08x\n" "RCAIntersect: DataRange->Flags == 0x%08x\n" "RCAIntersect: DataRange->SampleSize == 0x%08x\n" "RCAIntersect: DataRange->Reserved == 0x%08x\n", DataRange->FormatSize, DataRange->Flags, DataRange->SampleSize, DataRange->Reserved));
RCADEBUGP(RCA_LOUD, ("RCAIntersect: DataRange->MajorFormat == ")); RCADumpGUID(RCA_LOUD, &DataRange->MajorFormat); RCADEBUGP(RCA_LOUD, ("\n" "RCAIntersect: DataRange->SubFormat == ")); RCADumpGUID(RCA_LOUD, &DataRange->SubFormat); RCADEBUGP(RCA_LOUD, ("\n" "RCAIntersect: DataRange->Specifier == ")); RCADumpGUID(RCA_LOUD, &DataRange->Specifier); RCADEBUGP(RCA_LOUD, ("\n"));
RCADEBUGP(RCA_LOUD, ("RCAIntersect: DataRange->FormatSize == 0x%08x\n" "RCAIntersect: DataRange->Flags == 0x%08x\n" "RCAIntersect: DataRange->SampleSize == 0x%08x\n" "RCAIntersect: DataRange->Reserved == 0x%08x\n" "RCAIntersect: DataRange->MajorFormat == %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n" "RCAIntersect: DataRange->SubFormat == %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n" "RCAIntersect: DataRange->Specifier == %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", DataRange->FormatSize, DataRange->Flags, DataRange->SampleSize, DataRange->Reserved, DataRange->MajorFormat.Data1, DataRange->MajorFormat.Data2, DataRange->MajorFormat.Data3, DataRange->MajorFormat.Data4[0], DataRange->MajorFormat.Data4[1], DataRange->MajorFormat.Data4[2], DataRange->MajorFormat.Data4[3], DataRange->MajorFormat.Data4[4], DataRange->MajorFormat.Data4[5], DataRange->MajorFormat.Data4[6], DataRange->MajorFormat.Data4[7], DataRange->SubFormat.Data1, DataRange->SubFormat.Data2, DataRange->SubFormat.Data3, DataRange->SubFormat.Data4[0], DataRange->SubFormat.Data4[1], DataRange->SubFormat.Data4[2], DataRange->SubFormat.Data4[3], DataRange->SubFormat.Data4[4], DataRange->SubFormat.Data4[5], DataRange->SubFormat.Data4[6], DataRange->SubFormat.Data4[7], DataRange->Specifier.Data1, DataRange->Specifier.Data2, DataRange->Specifier.Data3, DataRange->Specifier.Data4[0], DataRange->Specifier.Data4[1], DataRange->Specifier.Data4[2], DataRange->Specifier.Data4[3], DataRange->Specifier.Data4[4], DataRange->Specifier.Data4[5], DataRange->Specifier.Data4[6], DataRange->Specifier.Data4[7]));
if (Pin->PinId == ID_DEVIO_PIN) { Status = RCAGenericIntersection(Irp, DataRange, OutputBufferLength, Data);
} else { RCADEBUGP(RCA_LOUD, ("RCAIntersect: BRIDGE Pin\n"));
if (OutputBufferLength == 0) { Irp->IoStatus.Information = DataRange->FormatSize; RCADEBUGP(RCA_INFO, ("RCAIntersect: " "Output buffer length was zero, placing size 0x%x " "in Irp->IoStatus.Information, " "Returning STATUS_BUFFER_OVERFLOW\n", DataRange->FormatSize)); return STATUS_BUFFER_OVERFLOW; } if (OutputBufferLength == sizeof(ULONG)) { *(PULONG)Data = DataRange->FormatSize; Irp->IoStatus.Information = sizeof(ULONG);
RCADEBUGP(RCA_LOUD, ("RCAIntersect: " "Output buffer is one ULONG big, placing size 0x%x " "in output buffer, " "Returning STATUS_SUCCESS\n", DataRange->FormatSize)); return STATUS_SUCCESS;
} if (OutputBufferLength < DataRange->FormatSize) { RCADEBUGP(RCA_ERROR, ("RCAIntersect: " "Output buffer too small, returning STATUS_BUFFER_TOO_SMALL\n")); return STATUS_BUFFER_TOO_SMALL; } Irp->IoStatus.Information = DataRange->FormatSize; RtlCopyMemory(Data, DataRange, DataRange->FormatSize); }
RCADEBUGP(RCA_INFO, ("RCAIntersect: Exit - " "Returning Status == 0x%x\n", Status));
return Status; }
VOID LinkPinInstanceToVcContext( IN PVOID VcContext, IN PPIN_INSTANCE_BRIDGE pPinInstance )/*++
Routine Description: Sets the pointers to link a pin instance to its VC context (placed in separate function to allow PinDispatchCreate() to remain pageable, since this operation requires a spin lock). Arguments: VcContext - Vc context we obtained when we referenced the VC pPinInstance - Pointer to the PIN_INSTANCE_BRIDGE structure Return value: -none- --*/
{
RCA_ACQUIRE_BRIDGE_PIN_LOCK(pPinInstance);
pPinInstance->VcContext = VcContext;
RCA_RELEASE_BRIDGE_PIN_LOCK(pPinInstance); }
VOID LinkPinInstanceToFilterInstance( IN PFILTER_INSTANCE pFilterInstance, IN PPIN_INSTANCE_BRIDGE pPinInstance )/*++
Routine Description: Sets the pointers to link a pin instance to its filter instance (placed in separate function to allow PinDispatchCreate() to remain pageable, since this operation requires a spin lock). Arguments: VcContext - Vc context we obtained when we referenced the VC pPinInstance - Pointer to the PIN_INSTANCE_BRIDGE structure Return value: -none- --*/
{
RCA_ACQUIRE_BRIDGE_PIN_LOCK(pPinInstance);
pPinInstance->FilterInstance = pFilterInstance; // FIXME: This really needs to be protected by some filter-specific lock
RCA_RELEASE_BRIDGE_PIN_LOCK(pPinInstance); }
NTSTATUSPinDispatchCreate( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Dispatches the creation of a Pin instance. Allocates the object header and initializes the data for this Pin instance.
Arguments:
DeviceObject - Device object on which the creation is occuring.
Irp - Creation Irp.
Return Values:
Returns STATUS_SUCCESS on success, or an error.
--*/{ PIO_STACK_LOCATION IrpStack; PKSPIN_CONNECT Connect; NTSTATUS Status = 0; PKSDATAFORMAT DataFormat; PFILTER_INSTANCE FilterInstance; ULONG OppositePin;
RCADEBUGP(RCA_INFO, ("PinDispatchCreate: Enter\n"));
IrpStack = IoGetCurrentIrpStackLocation(Irp);
//
// Determine if this request is being sent to a valid Pin factory with valid
// connection parameters.
//
//
// get hold of our filter instance in the RELATED context (context will be the new PIN instance)
//
FilterInstance = (PFILTER_INSTANCE)IrpStack->FileObject->RelatedFileObject->FsContext; RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: " "FilterInstance == 0x%x\n", FilterInstance));
Status = KsValidateConnectRequest(Irp, SIZEOF_ARRAY(PinDescriptors), (FilterInstance->FilterType == FilterTypeRender ? RenderPinDescriptors : CapturePinDescriptors), &Connect);
if (STATUS_SUCCESS != Status) { Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT); RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: " "KsValidateConnectRequest failure. " "Setting Irp->IoStatus.Status and returing Status == 0x%x\n", Status)); return Status; }
RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchCreate: FilterType == %lu\n", (ULONG)FilterInstance->FilterType)); RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchCreate: Connect->PinId == %lu\n", (ULONG)Connect->PinId)); RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchCreate: &Connect == %x\n", &Connect));
OppositePin = Connect->PinId ^ 0x00000001; DataFormat = (PKSDATAFORMAT)(Connect + 1);
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: DataFormat->FormatSize == 0x%08x\n" "PinDispatchCreate: DataFormat->Flags == 0x%08x\n" "PinDispatchCreate: DataFormat->SampleSize == 0x%08x\n" "PinDispatchCreate: DataFormat->Reserved == 0x%08x\n", DataFormat->FormatSize, DataFormat->Flags, DataFormat->SampleSize, DataFormat->Reserved));
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: DataFormat->MajorFormat == ")); RCADumpGUID(RCA_LOUD, &DataFormat->MajorFormat); RCADEBUGP(RCA_LOUD, ("\n" "PinDispatchCreate: DataFormat->SubFormat == ")); RCADumpGUID(RCA_LOUD, &DataFormat->SubFormat); RCADEBUGP(RCA_LOUD, ("\n" "PinDispatchCreate: DataFormat->Specifier == ")); RCADumpGUID(RCA_LOUD, &DataFormat->Specifier); RCADEBUGP(RCA_LOUD, ("\n"));
// Exclude other Pin creation at this point.
KeWaitForMutexObject(&FilterInstance->ControlMutex, Executive, KernelMode, FALSE, NULL);
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Acquired filter instance control mutex\n"));
do { //
// Make sure this Pin ID isn't already connected
//
if (FilterInstance->PinFileObjects[Connect->PinId]) { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: " "Pin ID %lu is already connected, " "setting Status = STATUS_NOT_FOUND\n", Status));
Status = STATUS_NOT_FOUND; break; }
if (Connect->PinId == ID_BRIDGE_PIN) { // We're creating a 'bridge' pin to the network. TAPI has set up
// a connection and returned the NDIS VC identifier, which
// must be in the connect structure.
//
PWSTR pwstrNdisVcString = 0; PPIN_INSTANCE_BRIDGE PinInstance; PVOID VcContext; NDIS_STRING UniString; ULONG_PTR ulHexVcId; NDIS_REQUEST Request;
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Creating a bridge pin\n")); RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchCreate: Connect == 0x%x\n", Connect));
//
// Create the instance information.
//
RCAAllocMem( PinInstance, PIN_INSTANCE_BRIDGE, sizeof(PIN_INSTANCE_BRIDGE)); if (!PinInstance) { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: " "Could not allocate memory for pin instance, " "Setting Status = STATUS_INSUFFICIENT_RESOURCES\n")); Status = STATUS_INSUFFICIENT_RESOURCES; break; }
RCAMemSet(PinInstance, 0, sizeof(PIN_INSTANCE_BRIDGE)); KeInitializeSpinLock(&PinInstance->SpinLock); //
// Initialize the block structure if we are on a capture filter.
//
if (FilterInstance->FilterType == FilterTypeCapture) {
RCAInitBlockStruc(&PinInstance->Block); }
//
// This object uses KS to perform access through the PinFileIoDispatchTable. There
// are no create items attached to this object because it does not support a
// clock or allocator.
//
Status = KsAllocateObjectHeader(&PinInstance->InstanceHdr.Header, 0, NULL, Irp, &PinFileIoDispatchTable);
if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: " "KsAllocateObjectHeader failed with Status == 0x%x, " "Setting Status = STATUS_INVALID_PARAMETER\n", Status)); Status = STATUS_INVALID_PARAMETER;
RCAFreeMem(PinInstance); break; } if (FilterInstance->FilterType == FilterTypeCapture) { InitializeListHead(&(PinInstance->WorkQueue)); }
//
// Crosslink PIN instance and filter instance
//
LinkPinInstanceToFilterInstance(FilterInstance, PinInstance);
//
// Obtain VC context for the VC handle we were given.
//
pwstrNdisVcString = (PWSTR)(DataFormat + 1);
NdisInitUnicodeString (&UniString, pwstrNdisVcString);
if (FilterInstance->FilterType == FilterTypeRender) { Status = RCACoNdisGetVcContextForSend(UniString, (PVOID) PinInstance, &VcContext); } else { Status = RCACoNdisGetVcContextForReceive(UniString, (PVOID) PinInstance, &VcContext); } if (Status != NDIS_STATUS_SUCCESS) { Status = STATUS_INVALID_PARAMETER; RCAFreeMem(PinInstance); break; } //
// Crosslink PIN instance and VC
//
LinkPinInstanceToVcContext(VcContext, PinInstance); //
// KS expects that the object data is in FsContext.
//
IoGetCurrentIrpStackLocation(Irp)->FileObject->FsContext = PinInstance; RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Address of File Object == 0x%x\n", IoGetCurrentIrpStackLocation(Irp)->FileObject));
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: FsContext == 0x%x\n", IoGetCurrentIrpStackLocation(Irp)->FileObject->FsContext));
FilterInstance->BridgePin = PinInstance;
Status = STATUS_SUCCESS; } else if (Connect->PinId == ID_DEVIO_PIN) { RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Creating a devio pin\n"));
#if DUMP_CONNECT_FORMAT
//
// Print out the data format information.
//
if (IsEqualGUIDAligned(&DataFormat->Specifier, &KSDATAFORMAT_SPECIFIER_WAVEFORMATEX)) { PKSDATAFORMAT_WAVEFORMATEX pWaveFormat;
pWaveFormat = (PKSDATAFORMAT_WAVEFORMATEX)DataFormat;
RCADEBUGP(RCA_INFO, ("PinDispatchCreate: wFormatTag == 0x%x\n" "PinDispatchCreate: nChannels == 0x%x\n" "PinDispatchCreate: nSamplesPerSec == 0x%x\n" "PinDispatchCreate: nAvgBytesPerSec == 0x%x\n" "PinDispatchCreate: nBlockAlign == 0x%x\n" "PinDispatchCreate: wBitsPerSample == 0x%x\n" "PinDispatchCreate: cbSize == 0x%x\n", pWaveFormat->WaveFormatEx.wFormatTag, pWaveFormat->WaveFormatEx.nChannels, pWaveFormat->WaveFormatEx.nSamplesPerSec, pWaveFormat->WaveFormatEx.nAvgBytesPerSec, pWaveFormat->WaveFormatEx.nBlockAlign, pWaveFormat->WaveFormatEx.wBitsPerSample, pWaveFormat->WaveFormatEx.cbSize));
} else { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: Data Format was not WAVEFORMATEX, don't know what to do\n")); RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: The specifier was: ")); RCADumpGUID(RCA_ERROR, &DataFormat->Specifier); RCADEBUGP(RCA_ERROR, ("\n")); }
#endif
//
// Check for RENDER or CAPTURE
//
if (FilterInstance->FilterType == FilterTypeRender) { RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchCreate: RENDER: Connect = 0x%x\n", Connect));
Status = InitializeDevIoPin(Irp, 0, FilterInstance, DataFormat);
} else { //
// Capture device; streans data from the net; IRP source.
// Get the connectong filter's file handle so we can stream to it.
//
if (Connect->PinToHandle) { RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Creating a Source Pin\n")); Status = ObReferenceObjectByHandle(Connect->PinToHandle, // other filter's PIN
FILE_WRITE_DATA, NULL, ExGetPreviousMode(), &FilterInstance->NextFileObject, // &FilterInstance->NextFileObjects[Connect->PinId], // this is other file object
NULL); if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: " "ObReferenceObjectByHandle failed with " "Status == 0x%x\n", Status)); //
// Get out of while loop (releases mutex and returns status)
//
break; } } else { RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Creating a Sink Pin\n")); FilterInstance->NextFileObject = NULL; }
Status = InitializeDevIoPin(Irp, 1, FilterInstance, DataFormat);
//
// Add the pin's target to the list of targets for
// recalculating IRP stack depth.
//
if (FilterInstance->NextFileObject != NULL) { if (NT_SUCCESS(Status)) { KsSetTargetDeviceObject(FilterInstance->Header, IoGetRelatedDeviceObject(FilterInstance->NextFileObject)); } else { ObDereferenceObject(FilterInstance->NextFileObject); FilterInstance->NextFileObject = NULL; } } } RtlCopyMemory(&FilterInstance->DataFormat, DataFormat, sizeof(KSDATAFORMAT)); } else { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: Not creating a bridge or a devio pin, " "Setting Status == STATUS_NOT_FOUND\n")); Status = STATUS_NOT_FOUND; }
if (NT_SUCCESS(Status)) { PPIN_INSTANCE_HEADER PinInstance;
//
// Store the common Pin information and increment the reference
// count on the parent Filter.
// The newly created PIN can subsequently be retreived from the filter instance
// header by specifying its type to PinFileObjects[Connect->PinId]..
//
PinInstance = (PPIN_INSTANCE_HEADER)IrpStack->FileObject->FsContext; PinInstance->PinId = Connect->PinId; ObReferenceObject(IrpStack->FileObject->RelatedFileObject); // refs the FILTER object
//
// Set up Pin instance for retrieval later
//
FilterInstance->PinFileObjects[Connect->PinId] = IrpStack->FileObject;
RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: " "Pin Created Successfully, Status == 0x%x\n", Status)); } else { RCADEBUGP(RCA_ERROR, ("PinDispatchCreate: Failure, Status == 0x%x\n", Status)); }
} while(FALSE);
KeReleaseMutex(&FilterInstance->ControlMutex, FALSE); RCADEBUGP(RCA_LOUD, ("PinDispatchCreate: Released filter instance control mutex\n"));
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
RCADEBUGP(RCA_INFO, ("PinDispatchCreate: Exit - " "Setting Irp->IoStatus.Status and returing Status == 0x%x\n", Status)); return Status;}
NTSTATUSInitializeDevIoPin( IN PIRP Irp, IN BOOLEAN Read, IN PFILTER_INSTANCE FilterInstance, IN PKSDATAFORMAT DataFormat )/*++
Routine Description:
Allocates the Dev I/O Pin specific structure and initializes it.
Arguments:
Irp - Creation Irp. Read - Read/Write boolean. Read = 1.
DataFormat - The proposed data format.
Return Values:
Returns STATUS_SUCCESS if everything could be allocated and opened, else an error.
--*/{ PFILE_OBJECT FileObject; PPIN_INSTANCE_BRIDGE BridgePinInstance = NULL; PPIN_INSTANCE_DEVIO PinInstance = NULL; PIO_STACK_LOCATION IrpStack; NTSTATUS Status;
RCADEBUGP(RCA_INFO, ("InitializeDevIoPin: Enter - DataFormat == 0x%x\n", DataFormat));
//
// The rest of the data format has already been verified by KsValidateConnectRequest,
// however the FormatSize should be at least as big as the base format size.
//
if (DataFormat->FormatSize < sizeof(KSDATAFORMAT)) { RCADEBUGP(RCA_ERROR, ("InitializeDevIoPin: " "Data format size (0x%x) is less than size of KSDATAFORMAT\n", DataFormat->FormatSize)); return STATUS_CONNECTION_REFUSED; }
//
// check we have a bridge PIN on this filter instance supporting this data format.
// The function locks the parent filter instance and looks for a conected FILEIO Pin.
//
IrpStack = IoGetCurrentIrpStackLocation(Irp);
if (!(BridgePinInstance = FilterInstance->BridgePin)) { RCADEBUGP(RCA_ERROR, ("InitializeDevIoPin: " "Bridge pin is not yet connected, " "returning STATUS_CONNECTION_REFUSED\n")); return STATUS_CONNECTION_REFUSED; }
// Create the instance information. This contains the Pin factory identifier, and
// event queue information.
//
RCAAllocMem( PinInstance, PIN_INSTANCE_DEVIO, sizeof(PIN_INSTANCE_DEVIO));
if (PinInstance) { RCAMemSet(PinInstance, 0, sizeof(PIN_INSTANCE_DEVIO));
//
// This object uses KS to perform access through the PinDevIoDispatchTable. There
// are no create items attached to this object because it does not support a
// clock or allocator.
//
Status = KsAllocateObjectHeader(&PinInstance->InstanceHdr.Header, 0, NULL, Irp, &PinDevIoDispatchTable);
if (NT_SUCCESS(Status)) { InitializeListHead(&PinInstance->EventQueue); ExInitializeFastMutex(&PinInstance->EventQueueLock);
if (Read) { #if AUDIO_SINK_FLAG
if (FilterInstance->NextFileObject == NULL) { InitializeListHead(&PinInstance->ActiveQueue); KeInitializeSpinLock(&PinInstance->QueueLock); PinInstance->ConnectedAsSink = TRUE; RCADEBUGP(RCA_LOUD, ("InitializeDevIoPin: " "Set ConnectedAsSink == TRUE\n")); } else { PinInstance->ConnectedAsSink = FALSE; RCADEBUGP(RCA_LOUD, ("InitializeDevIoPin: " "Set ConnectedAsSink == FALSE\n")); } #endif
} else { // end of CAPTURE pin (from the net)
// This might be a bit misleading. On the render filter, the devio pin is
// always a sink. But the ConnectedAsSink flag applies only to the capture side.
PinInstance->ConnectedAsSink = FALSE; RCADEBUGP(RCA_LOUD, ("InitializeDevIoPin: " "Set ConnectedAsSink == FALSE\n")); }
if (!NT_SUCCESS(Status)) { KsFreeObjectHeader (PinInstance->InstanceHdr.Header); RCAFreeMem(PinInstance); return Status; }
//
// Point DEVIO Pin at VC
//
RCA_ACQUIRE_BRIDGE_PIN_LOCK(BridgePinInstance);
PinInstance->VcContext = BridgePinInstance->VcContext;
RCA_RELEASE_BRIDGE_PIN_LOCK(BridgePinInstance);
FilterInstance->DevIoPin = PinInstance; PinInstance->FilterInstance = FilterInstance;
//
// KS expects that the object data is in FsContext.
//
IoGetCurrentIrpStackLocation(Irp)->FileObject->FsContext = PinInstance; return STATUS_SUCCESS; } else { RCADEBUGP(RCA_ERROR, ("InitializeDevIoPin: KsAllocateObjectHeader failed with " "Status == 0x%x\n", Status)); } RCAFreeMem(PinInstance); } else { //
// Couldn't allocate PIN
//
RCADEBUGP(RCA_ERROR, ("InitializeDevIoPin: " "Could not allocate memory for pin, " "Setting Status = STATUS_INSUFFICIENT_RESOURCES\n")); Status = STATUS_INSUFFICIENT_RESOURCES; }
RCADEBUGP(RCA_INFO, ("InitializeDevIoPin: Exit - " "Returning Status == 0x%x\n", Status));
return Status;}
NTSTATUSPinDispatchIoControl( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Dispatches property, event, and streaming requests on the Dev I/O Pin instance.
Arguments:
DeviceObject - Device object on which the device control is occuring.
Irp - Device control Irp.
Return Values:
Returns STATUS_SUCCESS if the property was successfully manipulated, else an error.
--*/{ PIO_STACK_LOCATION IrpStack; NTSTATUS Status; CCHAR PriorityBoost; PPIN_INSTANCE_HEADER PinInstanceHeader; UINT PendTheIrp = 0;
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: Enter\n"));
PriorityBoost = IO_NO_INCREMENT; IrpStack = IoGetCurrentIrpStackLocation(Irp); Irp->IoStatus.Status = STATUS_PENDING; IoMarkIrpPending (Irp);
RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchIoControl: Marked IRP Pending\n"));
PinInstanceHeader = (PPIN_INSTANCE_HEADER)IrpStack->FileObject->FsContext;
if (PinInstanceHeader->PinId == ID_DEVIO_PIN) { PPIN_INSTANCE_DEVIO PinInstanceDevIo; RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: DEVIO pin\n"));
PinInstanceDevIo = (PPIN_INSTANCE_DEVIO)IrpStack->FileObject->FsContext; switch(IrpStack->Parameters.DeviceIoControl.IoControlCode) { case IOCTL_KS_PROPERTY: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_PROPERTY\n")); Status = KsPropertyHandler(Irp, SIZEOF_ARRAY(DevIoPropertySets), DevIoPropertySets); break; case IOCTL_KS_ENABLE_EVENT: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_ENABLE_EVENT\n")); Status = KsEnableEvent(Irp, SIZEOF_ARRAY(EventSets), EventSets, &PinInstanceDevIo->EventQueue, KSEVENTS_FMUTEXUNSAFE, &PinInstanceDevIo->EventQueueLock); break; case IOCTL_KS_DISABLE_EVENT: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_DISABLE_EVENT\n")); Status = KsDisableEvent(Irp, &PinInstanceDevIo->EventQueue, KSEVENTS_FMUTEXUNSAFE, &PinInstanceDevIo->EventQueueLock); break; case IOCTL_KS_READ_STREAM: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_READ_STREAM\n"));
if (NT_SUCCESS(Status = ReadStream(Irp, PinInstanceDevIo))) { PriorityBoost = IO_DISK_INCREMENT; } else { RCADEBUGP(RCA_ERROR, ("PinDispatchIoControl: " "ReadStream failed, Status == 0x%x\n", Status)); } break; case IOCTL_KS_WRITE_STREAM: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_WRITE_STREAM\n")); Status = WriteStream(Irp, PinInstanceDevIo ); break; default: RCADEBUGP(RCA_WARNING, ("PinDispatchIoControl: " "Unknown IOCTL: 0x%x\n", IrpStack->Parameters.DeviceIoControl.IoControlCode)); Status = KsDefaultDeviceIoCompletion( DeviceObject, Irp );
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: " "Returning result of KsDefaultDeviceIoCompletion: 0x%x\n", Status)); return Status; } } else { PPIN_INSTANCE_BRIDGE PinInstanceBridge; RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: BRIDGE pin\n"));
PinInstanceBridge = (PPIN_INSTANCE_BRIDGE)IrpStack->FileObject->FsContext; switch(IrpStack->Parameters.DeviceIoControl.IoControlCode) { case IOCTL_KS_PROPERTY: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_PROPERTY\n")); RCADumpKsPropertyInfo(RCA_LOUD, Irp);
Status = KsPropertyHandler(Irp, SIZEOF_ARRAY(BridgePropertySets), BridgePropertySets); RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: " "Returning result of KsPropertyHandler: 0x%x\n", Status)); break; case IOCTL_KS_ENABLE_EVENT: RCADEBUGP(RCA_LOUD,("PinDispatchIoControl: IOCTL_KS_ENABLE_EVENT\n")); Status = KsEnableEvent(Irp, SIZEOF_ARRAY(EventSets), EventSets, &PinInstanceBridge->EventQueue, KSEVENTS_FMUTEXUNSAFE, &PinInstanceBridge->EventQueueLock); break; case IOCTL_KS_DISABLE_EVENT: RCADEBUGP(RCA_LOUD,("PinDispatchIoControl: IOCTL_KS_DISABLE_EVENT\n")); Status = KsDisableEvent(Irp, &PinInstanceBridge->EventQueue, KSEVENTS_FMUTEXUNSAFE, &PinInstanceBridge->EventQueueLock); break; case IOCTL_KS_READ_STREAM: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_READ_STREAM\n")); Status = KsDefaultDeviceIoCompletion(DeviceObject, Irp);
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: " "Returning result of KsDefaultDeviceIoCompletion: 0x%x\n", Status)); return Status; case IOCTL_KS_WRITE_STREAM: RCADEBUGP(RCA_LOUD, ("PinDispatchIoControl: IOCTL_KS_WRITE_STREAM\n")); Status = KsDefaultDeviceIoCompletion(DeviceObject, Irp);
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: " "Returning result of KsDefaultDeviceIoCompletion: 0x%x\n", Status)); return Status; default: RCADEBUGP(RCA_WARNING, ("PinDispatchIoControl: " "Unknown IOCTL: 0x%x\n", IrpStack->Parameters.DeviceIoControl.IoControlCode)); Status = KsDefaultDeviceIoCompletion(DeviceObject, Irp);
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: " "Returning result of KsDefaultDeviceIoCompletion: 0x%x\n", Status));
return Status; } }
if (Status != STATUS_PENDING) { Irp->IoStatus.Status = Status;
IoCompleteRequest( Irp, PriorityBoost ); RCADEBUGP(RCA_VERY_LOUD, ("PinDispatchIoControl: Completed IRP\n")); }
RCADEBUGP(RCA_INFO, ("PinDispatchIoControl: Exit - " "Returning Status == 0x%x\n", Status));
return Status;
}
NTSTATUSPinDispatchClose( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Closes a previously opened Pin instance. This can occur at any time in any order. If this is a FILEIO (BRIDGE) Pin, just clear up the Pin. THe associated VC stays around until it gets cleared up via NDIS.
Arguments:
DeviceObject - Device object on which the close is occuring.
Irp - Close Irp.
Return Values:
Returns STATUS_SUCCESS.
--*/{ PIO_STACK_LOCATION IrpStack; PFILTER_INSTANCE FilterInstance; PPIN_INSTANCE_HEADER PinInstance; NDIS_STATUS CloseCallStatus = NDIS_STATUS_PENDING;
RCADEBUGP(RCA_INFO,("PinDispatchIoClose: Enter\n"));
IrpStack = IoGetCurrentIrpStackLocation(Irp); PinInstance = (PPIN_INSTANCE_HEADER)IrpStack->FileObject->FsContext; FilterInstance = (PFILTER_INSTANCE)IrpStack->FileObject->RelatedFileObject->FsContext;
// The closing of the File I/O Pin instance must be synchronized with any access to
// that object.
KeWaitForMutexObject(&FilterInstance->ControlMutex, Executive, KernelMode, FALSE, NULL);
RCADEBUGP(RCA_LOUD, ("PinDispatchClose: Acquired filter instance control mutex\n"));
//
// These were allocated during the creation of the Pin instance.
//
KsFreeObjectHeader(PinInstance->Header);
FilterInstance->PinFileObjects[PinInstance->PinId] = NULL; // If DEVIO, clear up event list.
if (ID_DEVIO_PIN == PinInstance->PinId) { RCADEBUGP(RCA_LOUD, ("PinDispatchClose: DEVIO pin\n")); if (FilterInstance->FilterType == FilterTypeCapture) { PPIN_INSTANCE_BRIDGE pBridgePinInstance = FilterInstance->BridgePin; NDIS_STATUS LocalStatus;
if (pBridgePinInstance != NULL) { RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance);
pBridgePinInstance->SignalMe = pBridgePinInstance->bWorkItemQueued; RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance);
if (pBridgePinInstance->SignalMe) { RCADEBUGP(RCA_LOUD, ("PinDispatchClose: " "Waiting for worker threads\n")); RCABlock(&pBridgePinInstance->Block, &LocalStatus); }
}
if (FilterInstance->NextFileObject != NULL) { ObDereferenceObject(FilterInstance->NextFileObject); FilterInstance->NextFileObject = NULL; RCADEBUGP(RCA_LOUD, ("PinDispatchClose: " "Set FilterInstance->NextFileObject = NULL\n")); } } if (((PPIN_INSTANCE_DEVIO)PinInstance)->AllocatorObject) { ObDereferenceObject(((PPIN_INSTANCE_DEVIO)PinInstance)->AllocatorObject); } //
// Clean up the event list of anything still outstanding.
//
// KsFreeEventList(// IrpStack->FileObject,
// &((PPIN_INSTANCE_DEVIO)PinInstance)->EventQueue,
// KSEVENTS_FMUTEXUNSAFE,
// &((PPIN_INSTANCE_DEVIO)PinInstance)->EventQueueLock);
RCAFreeMem((PPIN_INSTANCE_DEVIO)PinInstance); FilterInstance->DevIoPin = NULL; RCADEBUGP(RCA_LOUD, ("PinDispatchClose: " "Set FilterInstance->DevIoPin = NULL\n")); } else { PPIN_INSTANCE_BRIDGE pBridgePinInstance;
RCADEBUGP(RCA_WARNING,("PinDispatchIoClose: BRIDGE pin\n")); pBridgePinInstance = (PPIN_INSTANCE_BRIDGE)IrpStack->FileObject->FsContext; RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance); if (pBridgePinInstance->VcContext) { RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance);
RCACoNdisCloseCallOnVc(pBridgePinInstance->VcContext);
RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance); if (FilterInstance->FilterType == FilterTypeRender) { RCACoNdisReleaseSendVcContext(pBridgePinInstance->VcContext); } else { RCACoNdisReleaseReceiveVcContext(pBridgePinInstance->VcContext); }
pBridgePinInstance->VcContext = NULL;
if (pBridgePinInstance->FilterInstance->DevIoPin) pBridgePinInstance->FilterInstance->DevIoPin->VcContext = NULL;
RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance); } else { RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance); }
if (FilterInstance->FilterType == FilterTypeCapture) { NDIS_STATUS LocalStatus; RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance);
pBridgePinInstance->SignalMe = pBridgePinInstance->bWorkItemQueued; RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance);
if (pBridgePinInstance->SignalMe) { RCADEBUGP(RCA_LOUD, ("PinDispatchClose: " "Waiting for worker threads\n")); RCABlock(&pBridgePinInstance->Block, &LocalStatus); }
}
RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance); if (pBridgePinInstance->pDataFormat) { RCAFreeMem(pBridgePinInstance->pDataFormat); }
RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance);
RCAFreeMem((PPIN_INSTANCE_BRIDGE)PinInstance); FilterInstance->BridgePin = NULL; RCADEBUGP(RCA_LOUD, ("PinDispatchClose: " "Set FilterInstance->BridgePin = NULL\n"));
} KeReleaseMutex(&FilterInstance->ControlMutex, FALSE ); RCADEBUGP(RCA_LOUD, ("PinDispatchClose: Released filter instance control mutex\n")); //
// All Pins are created with a root file object, which is the Filter, and was
// previously referenced during creation.
//
RCADEBUGP(RCA_WARNING,("PinDispatchClose: ObDereferenceObject\n")); ObDereferenceObject(IrpStack->FileObject->RelatedFileObject); Irp->IoStatus.Status = STATUS_SUCCESS; Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
RCADEBUGP(RCA_LOUD, ("PinDispatchClose: Completed IRP\n")); RCADEBUGP(RCA_INFO, ("PinDispatchClose: Exit - Returning STATUS_SUCCESS"));
return STATUS_SUCCESS;}
NTSTATUSFilterDispatchCreate( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )/*++
Routine Description:
Dispatches the creation of a Filter instance. Allocates the object header and initializes the data for this Filter instance.
Arguments:
DeviceObject - Device object on which the creation is occuring.
Irp - Creation Irp.
Return Values:
Returns STATUS_SUCCESS on success, STATUS_INSUFFICIENT_RESOURCES or some related error on failure.
--*/{ PIO_STACK_LOCATION irpSp; PKSOBJECT_CREATE_ITEM CreateItem; NTSTATUS Status;
RCADEBUGP(RCA_INFO, ("FilterDispatchCreate: Enter\n"));
//
// Notify the software bus that this device is in use.
//
Status = KsReferenceSoftwareBusObject(((PDEVICE_INSTANCE)DeviceObject->DeviceExtension)->Header);
if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("FilterDispatchCreate: " "KsReferenceSoftwareBusObject failed, Status == 0x%x\n", Status)); } else { PFILTER_INSTANCE FilterInstance;
irpSp = IoGetCurrentIrpStackLocation( Irp ); CreateItem = KSCREATE_ITEM_IRP_STORAGE( Irp );
//
// Create the instance information. This contains the list of current Pins, and
// the mutex used when modifying pins.
//
RCAAllocMem( FilterInstance, FILTER_INSTANCE, sizeof(FILTER_INSTANCE)); if (FilterInstance) { RCAMemSet((PUCHAR)FilterInstance, 0, sizeof(FILTER_INSTANCE));
//
// Render or Capture?
//
FilterInstance->FilterType = (FILTER_TYPE) CreateItem->Context;
RCADEBUGP(RCA_LOUD, ("FilterDispatchCreate: " "Creating filter of type 0x%x\n", FilterInstance->FilterType));
//
// This object uses KS to perform access through the FilterCreateItems and
// FilterDispatchTable.
//
Status = KsAllocateObjectHeader(&FilterInstance->Header, SIZEOF_ARRAY(FilterObjectCreateDispatch), (PKSOBJECT_CREATE_ITEM)FilterObjectCreateDispatch, Irp, (PKSDISPATCH_TABLE)&FilterDispatchTable);
if (!NT_SUCCESS(Status)) { RCADEBUGP(RCA_ERROR, ("FilterDispatchCreate: " "KsAllocateObjectHeader failed, Status == 0x%x\n", Status)); } else { ULONG PinCount;
RtlCopyMemory(FilterInstance->PinInstances, PinInstances, sizeof(PinInstances));
KeInitializeMutex( &FilterInstance->ControlMutex, 1 );
//
// Initialize the list of Pins on this Filter to an unconnected state.
//
for (PinCount = SIZEOF_ARRAY(FilterInstance->PinFileObjects); PinCount; NOTHING) { FilterInstance->PinFileObjects[--PinCount] = NULL; }
//
// No audio data format set up yet for this filter instance. Wildcard it.
//
//RtlCopyMemory (&FilterInstance->DataFormat, &PinFileIoRange, sizeof (KSDATAFORMAT));
//
// KS expects that the filter object data is in FsContext.
//
IoGetCurrentIrpStackLocation(Irp)->FileObject->FsContext = FilterInstance; }
} else { RCADEBUGP (RCA_ERROR, ("FilterDispatchCreate: " "Could not allocate memory for filter instance, " "Setting Status == STATUS_INSUFFICIENT_RESOURCES\n"));
KsDereferenceSoftwareBusObject( ((PDEVICE_INSTANCE)DeviceObject->DeviceExtension)->Header ); Status = STATUS_INSUFFICIENT_RESOURCES; }
}
Irp->IoStatus.Status = Status; IoCompleteRequest(Irp, IO_NO_INCREMENT);
RCADEBUGP(RCA_LOUD, ("FilterDispatchCreate: Completed IRP\n"));
RCADEBUGP(RCA_INFO, ("FilterDispatchCreate: Exit - " "Setting Irp->IoStatus.Status and Returning 0x%x\n", Status)); return Status;}
NTSTATUSFilterPinIntersection( IN PIRP Irp, IN PKSP_PIN Pin, OUT PVOID Data )/*++
Routine Description:
Handles the KSPROPERTY_PIN_DATAINTERSECTION property in the Pin property set. Returns the first acceptable data format given a list of data ranges for a specified Pin factory.
Arguments:
Irp - Device control Irp.
Pin - Specific property request followed by Pin factory identifier, followed by a KSMULTIPLE_ITEM structure. This is followed by zero or more data range structures.
Data - The place in which to return the data format selected as the first intersection between the list of data ranges passed, and the acceptable formats.
Return Values:
returns STATUS_SUCCESS, else STATUS_INVALID_PARAMETER or STATUS_BUFFER_TOO_SMALL.
--*/{ PFILTER_INSTANCE FilterInstance; PIO_STACK_LOCATION IrpStack; NTSTATUS Status = 0;
RCADEBUGP(RCA_INFO, ("FilterPinIntersection: Enter\n")); IrpStack = IoGetCurrentIrpStackLocation(Irp); FilterInstance = (PFILTER_INSTANCE)IrpStack->FileObject->FsContext; RCADEBUGP(RCA_LOUD, ("FilterPinIntersection: FilterInstance == 0x%x\n", FilterInstance));
Status = KsPinDataIntersection(Irp, Pin, Data, SIZEOF_ARRAY(PinDescriptors), (FilterInstance->FilterType == FilterTypeRender ? RenderPinDescriptors : CapturePinDescriptors), RCAIntersect); RCADEBUGP(RCA_INFO, ("FilterPinIntersection: Exit - " "Returning Status == 0x%x\n", Status)); return Status;}
NTSTATUSPinDeviceState( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PKSSTATE DeviceState )
/*++
Routine Description:
Arguments: IN PIRP Irp - pointer to I/O request packet
IN PKSPROPERTY Property - pointer to the property structure
IN OUT PKSSTATE DeviceState - pointer to a KSSTATE, filled on GET otherwise contains the new state to set the pin
Return: STATUS_SUCCESS or an appropriate error code
--*/{ NTSTATUS Status = STATUS_SUCCESS; PFILE_OBJECT FileObject; PIO_STACK_LOCATION irpSp; PFILTER_INSTANCE FilterInstance; PPIN_INSTANCE_DEVIO PinInstance; PPIN_INSTANCE_BRIDGE pBridgePinInstance;
RCADEBUGP(RCA_INFO, ("PinDeviceState: Enter\n"));
irpSp = IoGetCurrentIrpStackLocation( Irp );
FilterInstance = (PFILTER_INSTANCE) irpSp->FileObject->RelatedFileObject->FsContext;
PinInstance = (PPIN_INSTANCE_DEVIO) irpSp->FileObject->FsContext;
pBridgePinInstance = FilterInstance->BridgePin;
ASSERT((PinInstance->InstanceHdr).PinId == ID_DEVIO_PIN);
//
// Both sides of the connection must exist.
//
if (!(FileObject = FilterInstance->PinFileObjects[ID_BRIDGE_PIN])) { RCADEBUGP(RCA_ERROR, ("PinDeviceState: " "Bridge pin file object is NULL, " "returning STATUS_DEVICE_NOT_CONNECTED\n")); return STATUS_DEVICE_NOT_CONNECTED; }
//
// Synchronize pin state changes
//
KeWaitForMutexObject(&FilterInstance->ControlMutex, Executive, KernelMode, FALSE, NULL);
RCADEBUGP(RCA_LOUD, ("PinDeviceState: Acquired Filter instance control mutex\n"));
if (Property->Flags & KSPROPERTY_TYPE_GET) { if((PinInstance->DeviceState == KSSTATE_PAUSE) && (FilterInstance->FilterType == FilterTypeCapture)) {
RCADEBUGP(RCA_ERROR, ("PinDeviceState: Capture device is paused, " "setting Status = STATUS_NO_DATA_DETECTED\n"));
Status = STATUS_NO_DATA_DETECTED;
} *DeviceState = PinInstance->DeviceState; KeReleaseMutex( &FilterInstance->ControlMutex, FALSE ); Irp->IoStatus.Information = sizeof( KSSTATE ); RCADEBUGP(RCA_INFO, ("PinDeviceState: " "Returning DeviceState == 0x%x, Status == 0x%x\n", *DeviceState, Status)); return Status; }
Irp->IoStatus.Information = 0;
if (PinInstance->DeviceState == *DeviceState) { KeReleaseMutex( &FilterInstance->ControlMutex, FALSE );
RCADEBUGP(RCA_LOUD, ("PinDeviceState: Released Filter instance control mutex\n")); RCADEBUGP(RCA_INFO, ("PinDeviceState: State is unchanged, returning STATUS_SUCCESS\n")); return STATUS_SUCCESS; }
switch(*DeviceState) { case KSSTATE_ACQUIRE: RCADEBUGP(RCA_INFO, ("PinDeviceState: Going to set state to ACQUIRE\n")); break;
case KSSTATE_RUN: RCADEBUGP(RCA_INFO, ("PinDeviceState: Going to set state to RUN\n")); break;
case KSSTATE_PAUSE: RCADEBUGP(RCA_INFO, ("PinDeviceState: Going to set state to PAUSE\n")); break;
case KSSTATE_STOP: RCADEBUGP(RCA_INFO, ("PinDeviceState: Going to set state to STOP\n"));#if AUDIO_SINK_FLAG
if ((FilterInstance->FilterType == FilterTypeCapture) && (PinInstance->ConnectedAsSink)) { // Cancel all the pending IRPs on the ActiveQueue
KsCancelIo(&PinInstance->ActiveQueue, &PinInstance->QueueLock); RCADEBUGP(RCA_LOUD, ("PinDeviceState: Cancelled I/O\n")); }#endif
if (FilterInstance->FilterType == FilterTypeCapture) { if (pBridgePinInstance != NULL) { NDIS_STATUS LocalStatus; RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePinInstance);
pBridgePinInstance->SignalMe = pBridgePinInstance->bWorkItemQueued;
RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePinInstance);
if (pBridgePinInstance->SignalMe) { RCADEBUGP(RCA_LOUD, ("PinDeviceState: " "Waiting for worker threads\n")); RCABlock(&pBridgePinInstance->Block, &LocalStatus); }
} } KsRecalculateStackDepth(((PDEVICE_INSTANCE)irpSp->DeviceObject->DeviceExtension)->Header, FALSE ); break; }
PinInstance->DeviceState = *DeviceState;
KeReleaseMutex(&FilterInstance->ControlMutex, FALSE); RCADEBUGP(RCA_LOUD, ("PinDeviceState: Released Filter instance control mutex\n"));
RCADEBUGP(RCA_INFO, ("PinDeviceState: Exit - Returning STATUS_SUCCESS\n"));
return STATUS_SUCCESS;}
NTSTATUSPinAllocatorFramingEx( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PKSALLOCATOR_FRAMING_EX FramingEx ){ NTSTATUS Status; PIO_STACK_LOCATION pIrpSp; PPIN_INSTANCE_HEADER pPin; FILTER_TYPE FilterType; PVOID VcContext; ULONG ulFrameSize;
RCADEBUGP(RCA_INFO, ("PinAllocatorFramingEx: Enter\n"));
pIrpSp = IoGetCurrentIrpStackLocation(Irp); pPin = (PPIN_INSTANCE_HEADER) pIrpSp->FileObject->FsContext;
if (pPin->PinId == ID_DEVIO_PIN) { PPIN_INSTANCE_DEVIO pDevioPin;
pDevioPin = (PPIN_INSTANCE_DEVIO) pPin; FilterType = pDevioPin->FilterInstance->FilterType; RCA_ACQUIRE_BRIDGE_PIN_LOCK(pDevioPin->FilterInstance->BridgePin);
VcContext = pDevioPin->VcContext;
RCA_RELEASE_BRIDGE_PIN_LOCK(pDevioPin->FilterInstance->BridgePin);
} else if (pPin->PinId == ID_BRIDGE_PIN) { PPIN_INSTANCE_BRIDGE pBridgePin;
pBridgePin = (PPIN_INSTANCE_BRIDGE) pPin; FilterType = pBridgePin->FilterInstance->FilterType;
RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePin);
VcContext = pBridgePin->VcContext;
RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePin); } else { RCADEBUGP(RCA_FATAL, ("PinAllocatorFramingEx: Got an unkown pin ID 0x%d - returning STATUS_UNSUCCESSFUL\n", pPin->PinId)); Irp->IoStatus.Information = 0; return STATUS_UNSUCCESSFUL; }
if (VcContext == NULL) { RCADEBUGP(RCA_ERROR, ("PinAllocatorFramingEx: Cannot determine max SDU sizes because we have no VC Context" " - returning STATUS_UNSUCCESSFUL\n")); Irp->IoStatus.Information = 0; return STATUS_UNSUCCESSFUL; } //
// FIXME: The VC could go away between the time when we release the bridge
// pin lock and here, so we could be handling a bogus vc context now.
// Let's see if this causes any problems.
//
if (FilterType == FilterTypeRender) { RCACoNdisGetMaxSduSizes(VcContext, NULL, &ulFrameSize); } else { RCACoNdisGetMaxSduSizes(VcContext, &ulFrameSize, NULL); } //
// For debugging only.
//
if (g_ulBufferSize > 0) { RCADEBUGP(RCA_ERROR, ("PinAllocatorFramingEx: Hardcoded buffer size to 0x%x\n", g_ulBufferSize)); ulFrameSize = g_ulBufferSize; }
RCADEBUGP(RCA_LOUD, ("PinAllocatorFramingEx: Frame size set to 0x%x\n", ulFrameSize)); INITIALIZE_SIMPLE_FRAMING_EX(FramingEx, KSMEMORY_TYPE_KERNEL_PAGED, KSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY, // Note: you don't set the KSALLOCATOR_REQUIREMENTF_PREFERENCES_ONLY here, so KsProxy thinks that you insist on your framing.
8, // number of frames
FILE_QUAD_ALIGNMENT, ulFrameSize, // min. requested frame size
ulFrameSize // max requested frame size
);
Irp->IoStatus.Information=sizeof(KSALLOCATOR_FRAMING_EX);
RCADEBUGP(RCA_INFO, ("PinAllocatorFramingEx: Exit - Returning STATUS_SUCCESS\n")); return STATUS_SUCCESS;}
NTSTATUSGetStreamAllocator( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID * AllocatorHandle ){ PIO_STACK_LOCATION irpSp; PPIN_INSTANCE_DEVIO PinInstance;
RCADEBUGP(RCA_INFO,("GetStreamAllocator: enter\n"));
irpSp = IoGetCurrentIrpStackLocation( Irp ); PinInstance = (PPIN_INSTANCE_DEVIO) irpSp->FileObject->FsContext;
*AllocatorHandle=(PVOID)NULL;
Irp->IoStatus.Information=sizeof(PVOID);
RCADEBUGP(RCA_INFO, ("GetStreamAllocator: Exit - Returning Status == STATUS_SUCCESS\n")); return STATUS_SUCCESS;}
NTSTATUSSetStreamAllocator( IN PIRP Irp, IN PKSPROPERTY Property, IN OUT PVOID * AllocatorHandle ){ PIO_STACK_LOCATION irpSp; PPIN_INSTANCE_DEVIO PinInstance;
RCADEBUGP(RCA_INFO,("SetStreamAllocator: enter\n"));
irpSp = IoGetCurrentIrpStackLocation( Irp ); PinInstance = (PPIN_INSTANCE_DEVIO) irpSp->FileObject->FsContext;
if (AllocatorHandle != NULL) {
if (PinInstance->AllocatorObject) { //
// If we've already got an allocator object, get rid of it.
//
ObDereferenceObject(PinInstance->AllocatorObject); }
ObReferenceObjectByHandle((HANDLE)*AllocatorHandle, 0, NULL, KernelMode, &PinInstance->AllocatorObject, NULL); }
Irp->IoStatus.Information=sizeof(ULONG);
RCADEBUGP(RCA_INFO, ("SetStreamAllocator: Exit - Returning Status == STATUS_SUCCESS\n"));
return STATUS_SUCCESS;}
NTSTATUSRCASetProposedDataFormat( IN PIRP Irp, IN PKSPROPERTY Property, IN PKSDATAFORMAT DataFormat )/*++
Routine Description: This is the handler for setting the write only property KSPROPERTY_PIN_PROPOSEDATAFORMAT. It simply makes a copy of whatever data format is passed in. This copy will be the data format returned in all future data range intersection requests.
Arguments: IN PIRP Irp - Pointer to I/O request packet
IN PKSPROPERTY Property - Pointer to the property structure
IN DataFormat - Pointer to the data format to copy
Return: STATUS_SUCCESS or an appropriate error code
--*/
{ NTSTATUS Status = STATUS_SUCCESS; PIO_STACK_LOCATION irpSp; PPIN_INSTANCE_BRIDGE pBridgePin; RCADEBUGP(RCA_INFO, ("RCASetProposedDataFormat: Enter\n")); irpSp = IoGetCurrentIrpStackLocation(Irp); pBridgePin = (PPIN_INSTANCE_BRIDGE) irpSp->FileObject->FsContext;
do { RCA_ACQUIRE_BRIDGE_PIN_LOCK(pBridgePin); if (pBridgePin->pDataFormat) { //
// If a data format was set by a previous call to this
// routine, free the memory used by that data format.
//
RCAFreeMem(pBridgePin->pDataFormat); }
RCAAllocMem(pBridgePin->pDataFormat, KSDATAFORMAT, DataFormat->FormatSize);
if (pBridgePin->pDataFormat) { RtlCopyMemory(pBridgePin->pDataFormat, DataFormat, DataFormat->FormatSize); } else { RCADEBUGP(RCA_ERROR, ("RCASetProposedDataFormat: " "Failed to allocate memory for data format storage, setting " "Status = STATUS_INSUFFICIENT_RESOURCES\n")); Status = STATUS_INSUFFICIENT_RESOURCES; }
RCA_RELEASE_BRIDGE_PIN_LOCK(pBridgePin); } while(FALSE);
RCADEBUGP(RCA_INFO, ("RCASetProposedDataFormat: Exit - Returning Status == 0x%x\n", Status));
return Status;}
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