#if defined(__cplusplus)
extern "C" {
#endif

/* Helper macro to enable gcc's extension.  */
#ifndef __GNU_EXTENSION
#ifdef __GNUC__
#define __GNU_EXTENSION __extension__
#else
#define __GNU_EXTENSION
#endif
#endif

#define STDMETHODCALLTYPE __stdcall
typedef GUID *PGUID;

/* Types */

typedef struct _BDA_PIN_PAIRING
{
    ULONG ulInputPin;
    ULONG ulOutputPin;
    ULONG ulcMaxInputsPerOutput;
    ULONG ulcMinInputsPerOutput;
    ULONG ulcMaxOutputsPerInput;
    ULONG ulcMinOutputsPerInput;
    ULONG ulcTopologyJoints;
    const ULONG *pTopologyJoints;
} BDA_PIN_PAIRING, *PBDA_PIN_PAIRING;

typedef struct _BDA_FILTER_TEMPLATE
{
    const KSFILTER_DESCRIPTOR *pFilterDescriptor;
    ULONG ulcPinPairs;
    const BDA_PIN_PAIRING *pPinPairs;
} BDA_FILTER_TEMPLATE, *PBDA_FILTER_TEMPLATE;


typedef struct _KSM_PIN
{
    KSMETHOD    Method;
    __GNU_EXTENSION union
    {
        ULONG       PinId;
        ULONG       PinType;
    };
    ULONG       Reserved;
} KSM_PIN, * PKSM_PIN;

/* Functions */

STDMETHODIMP_(NTSTATUS) BdaCheckChanges(IN PIRP  Irp);
STDMETHODIMP_(NTSTATUS) BdaCommitChanges(IN PIRP  Irp);

STDMETHODIMP_(NTSTATUS) BdaCreateFilterFactory(
    IN PKSDEVICE  pKSDevice,
    IN const KSFILTER_DESCRIPTOR *pFilterDescriptor,
    IN const BDA_FILTER_TEMPLATE *pBdaFilterTemplate);

STDMETHODIMP_(NTSTATUS) BdaCreateFilterFactoryEx(
    IN  PKSDEVICE pKSDevice,
    IN  const KSFILTER_DESCRIPTOR *pFilterDescriptor,
    IN  const BDA_FILTER_TEMPLATE *pBdaFilterTemplate,
    OUT PKSFILTERFACTORY  *ppKSFilterFactory);

STDMETHODIMP_(NTSTATUS) BdaCreatePin(
    IN PKSFILTER pKSFilter,
    IN ULONG ulPinType,
    OUT ULONG *pulPinId);

STDMETHODIMP_(NTSTATUS) BdaCreateTopology(
    IN PKSFILTER pKSFilter,
    IN ULONG InputPinId,
    IN ULONG OutputPinId);

STDMETHODIMP_(NTSTATUS) BdaDeletePin(
    IN PKSFILTER pKSFilter,
    IN ULONG *pulPinId);

STDMETHODIMP_(NTSTATUS) BdaFilterFactoryUpdateCacheData(
    IN PKSFILTERFACTORY pFilterFactory,
    IN const KSFILTER_DESCRIPTOR *pFilterDescriptor OPTIONAL);

STDMETHODIMP_(NTSTATUS) BdaGetChangeState(
    IN PIRP Irp,
    OUT BDA_CHANGE_STATE *pChangeState);

STDMETHODIMP_(NTSTATUS) BdaInitFilter(
    IN PKSFILTER pKSFilter,
    IN const BDA_FILTER_TEMPLATE *pBdaFilterTemplate);

STDMETHODIMP_(NTSTATUS) BdaMethodCreatePin(
    IN PIRP Irp,
    IN KSMETHOD *pKSMethod,
    OUT ULONG *pulPinFactoryID);

STDMETHODIMP_(NTSTATUS) BdaMethodCreateTopology(
    IN PIRP Irp,
    IN KSMETHOD *pKSMethod,
    OPTIONAL PVOID pvIgnored);

STDMETHODIMP_(NTSTATUS) BdaMethodDeletePin(
    IN PIRP Irp,
    IN KSMETHOD *pKSMethod,
    OPTIONAL PVOID pvIgnored);

STDMETHODIMP_(NTSTATUS) BdaPropertyGetControllingPinId(
    IN PIRP Irp,
    IN KSP_BDA_NODE_PIN *pProperty,
    OUT ULONG *pulControllingPinId);

STDMETHODIMP_(NTSTATUS) BdaPropertyGetPinControl(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty,
    OUT ULONG *pulProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyNodeDescriptors(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty,
    OUT BDANODE_DESCRIPTOR *pNodeDescriptorProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyNodeEvents(
    IN PIRP Irp,
    IN KSP_NODE *pKSProperty,
    OUT GUID *pguidProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyNodeMethods(
    IN PIRP Irp,
    IN KSP_NODE *pKSProperty,
    OUT GUID *pguidProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyNodeProperties(
    IN PIRP Irp,
    IN KSP_NODE *pKSProperty,
    OUT GUID *pguidProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyNodeTypes(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty,
    OUT ULONG *pulProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyPinTypes(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty,
    OUT ULONG *pulProperty);

STDMETHODIMP_(NTSTATUS) BdaPropertyTemplateConnections(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty,
    OUT KSTOPOLOGY_CONNECTION *pConnectionProperty);

STDMETHODIMP_(NTSTATUS) BdaStartChanges(IN PIRP Irp);
STDMETHODIMP_(NTSTATUS) BdaUninitFilter(IN PKSFILTER pKSFilter);

STDMETHODIMP_(NTSTATUS) BdaValidateNodeProperty(
    IN PIRP Irp,
    IN KSPROPERTY *pKSProperty);

#if defined(__cplusplus)
}
#endif