diff options
Diffstat (limited to 'audio/sysvad/TabletAudioSample/micintopo.cpp')
| -rw-r--r-- | audio/sysvad/TabletAudioSample/micintopo.cpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/audio/sysvad/TabletAudioSample/micintopo.cpp b/audio/sysvad/TabletAudioSample/micintopo.cpp new file mode 100644 index 00000000..6c1de10f --- /dev/null +++ b/audio/sysvad/TabletAudioSample/micintopo.cpp @@ -0,0 +1,274 @@ +/*++ + +Copyright (c) Microsoft Corporation All Rights Reserved + +Module Name: + + micintopo.cpp + +Abstract: + + Implementation of topology miniport for the mic (external: headphone). + +--*/ + +#pragma warning (disable : 4127) + +#include <sysvad.h> +#include "simple.h" +#include "mintopo.h" +#include "micintopo.h" +#include "micintoptable.h" + + +#pragma code_seg("PAGE") + +//============================================================================= +NTSTATUS +PropertyHandler_MicInJackDescription +( + _In_ PPCPROPERTY_REQUEST PropertyRequest +) +/*++ + +Routine Description: + + Handles ( KSPROPSETID_Jack, KSPROPERTY_JACK_DESCRIPTION ) + +Arguments: + + PropertyRequest - + +Return Value: + + NT status code. + +--*/ +{ + PAGED_CODE(); + + ASSERT(PropertyRequest); + + DPF_ENTER(("[PropertyHandler_MicInJackDescription]")); + + NTSTATUS ntStatus = STATUS_INVALID_DEVICE_REQUEST; + ULONG nPinId = (ULONG)-1; + + ULONG cJackDescriptions = ARRAYSIZE(MicInJackDescriptions); + PKSJACK_DESCRIPTION * JackDescriptions = MicInJackDescriptions; + + if (PropertyRequest->InstanceSize >= sizeof(ULONG)) + { + nPinId = *(PULONG(PropertyRequest->Instance)); + + if ((nPinId < cJackDescriptions) && (JackDescriptions[nPinId] != NULL)) + { + if (PropertyRequest->Verb & KSPROPERTY_TYPE_BASICSUPPORT) + { + ntStatus = + PropertyHandler_BasicSupport + ( + PropertyRequest, + KSPROPERTY_TYPE_BASICSUPPORT | KSPROPERTY_TYPE_GET, + VT_ILLEGAL + ); + } + else + { + ULONG cbNeeded = sizeof(KSMULTIPLE_ITEM) + sizeof(KSJACK_DESCRIPTION); + + if (PropertyRequest->ValueSize == 0) + { + PropertyRequest->ValueSize = cbNeeded; + ntStatus = STATUS_BUFFER_OVERFLOW; + } + else if (PropertyRequest->ValueSize < cbNeeded) + { + ntStatus = STATUS_BUFFER_TOO_SMALL; + } + else + { + if (PropertyRequest->Verb & KSPROPERTY_TYPE_GET) + { + PKSMULTIPLE_ITEM pMI = (PKSMULTIPLE_ITEM)PropertyRequest->Value; + PKSJACK_DESCRIPTION pDesc = (PKSJACK_DESCRIPTION)(pMI+1); + + pMI->Size = cbNeeded; + pMI->Count = 1; + + RtlCopyMemory(pDesc, JackDescriptions[nPinId], sizeof(KSJACK_DESCRIPTION)); + ntStatus = STATUS_SUCCESS; + } + } + } + } + } + + return ntStatus; +} + +//============================================================================= +NTSTATUS +PropertyHandler_MicInJackDescription2 +( + _In_ PPCPROPERTY_REQUEST PropertyRequest +) +/*++ + +Routine Description: + + Handles ( KSPROPSETID_Jack, KSPROPERTY_JACK_DESCRIPTION2 ) + +Arguments: + + PropertyRequest - + +Return Value: + + NT status code. + +--*/ +{ + PAGED_CODE(); + + ASSERT(PropertyRequest); + + DPF_ENTER(("[PropertyHandler_MicInJackDescription2]")); + + NTSTATUS ntStatus = STATUS_INVALID_DEVICE_REQUEST; + ULONG nPinId = (ULONG)-1; + + ULONG cJackDescriptions = ARRAYSIZE(MicInJackDescriptions); + PKSJACK_DESCRIPTION * JackDescriptions = MicInJackDescriptions; + + if (PropertyRequest->InstanceSize >= sizeof(ULONG)) + { + nPinId = *(PULONG(PropertyRequest->Instance)); + + if ((nPinId < cJackDescriptions) && (JackDescriptions[nPinId] != NULL)) + { + if (PropertyRequest->Verb & KSPROPERTY_TYPE_BASICSUPPORT) + { + ntStatus = + PropertyHandler_BasicSupport + ( + PropertyRequest, + KSPROPERTY_TYPE_BASICSUPPORT | KSPROPERTY_TYPE_GET, + VT_ILLEGAL + ); + } + else + { + ULONG cbNeeded = sizeof(KSMULTIPLE_ITEM) + sizeof(KSJACK_DESCRIPTION2); + + if (PropertyRequest->ValueSize == 0) + { + PropertyRequest->ValueSize = cbNeeded; + ntStatus = STATUS_BUFFER_OVERFLOW; + } + else if (PropertyRequest->ValueSize < cbNeeded) + { + ntStatus = STATUS_BUFFER_TOO_SMALL; + } + else + { + if (PropertyRequest->Verb & KSPROPERTY_TYPE_GET) + { + PKSMULTIPLE_ITEM pMI = (PKSMULTIPLE_ITEM)PropertyRequest->Value; + PKSJACK_DESCRIPTION2 pDesc = (PKSJACK_DESCRIPTION2)(pMI+1); + + pMI->Size = cbNeeded; + pMI->Count = 1; + + RtlZeroMemory(pDesc, sizeof(KSJACK_DESCRIPTION2)); + + // + // Specifies the lower 16 bits of the DWORD parameter. This parameter indicates whether + // the jack is currently active, streaming, idle, or hardware not ready. + // + pDesc->DeviceStateInfo = 0; + + // + // From MSDN: + // "If an audio device lacks jack presence detection, the IsConnected member of + // the KSJACK_DESCRIPTION structure must always be set to TRUE. To remove the + // ambiguity that results from this dual meaning of the TRUE value for IsConnected, + // a client application can call IKsJackDescription2::GetJackDescription2 to read + // the JackCapabilities flag of the KSJACK_DESCRIPTION2 structure. If this flag has + // the JACKDESC2_PRESENCE_DETECT_CAPABILITY bit set, it indicates that the endpoint + // does in fact support jack presence detection. In that case, the return value of + // the IsConnected member can be interpreted to accurately reflect the insertion status + // of the jack." + // + // Bit definitions: + // 0x00000001 - JACKDESC2_PRESENCE_DETECT_CAPABILITY + // 0x00000002 - JACKDESC2_DYNAMIC_FORMAT_CHANGE_CAPABILITY + // + pDesc->JackCapabilities = JACKDESC2_PRESENCE_DETECT_CAPABILITY; + + ntStatus = STATUS_SUCCESS; + } + } + } + } + } + + return ntStatus; +} + +//============================================================================= +NTSTATUS +PropertyHandler_MicInTopoFilter +( + _In_ PPCPROPERTY_REQUEST PropertyRequest +) +/*++ + +Routine Description: + + Redirects property request to miniport object + +Arguments: + + PropertyRequest - + +Return Value: + + NT status code. + +--*/ +{ + PAGED_CODE(); + + ASSERT(PropertyRequest); + + DPF_ENTER(("[PropertyHandler_MicInTopoFilter]")); + + // PropertryRequest structure is filled by portcls. + // MajorTarget is a pointer to miniport object for miniports. + // + NTSTATUS ntStatus = STATUS_INVALID_DEVICE_REQUEST; + + // + // This line shows how to get a pointer to the miniport topology object. + // + PCMiniportTopology pMiniport = (PCMiniportTopology)PropertyRequest->MajorTarget; + UNREFERENCED_VAR(pMiniport); + + if (IsEqualGUIDAligned(*PropertyRequest->PropertyItem->Set, KSPROPSETID_Jack)) + { + if (PropertyRequest->PropertyItem->Id == KSPROPERTY_JACK_DESCRIPTION) + { + ntStatus = PropertyHandler_MicInJackDescription(PropertyRequest); + } + else if (PropertyRequest->PropertyItem->Id == KSPROPERTY_JACK_DESCRIPTION2) + { + ntStatus = PropertyHandler_MicInJackDescription2(PropertyRequest); + } + } + + return ntStatus; +} // PropertyHandler_MicInTopoFilter + +#pragma code_seg() + |