篩選、釘選或節點的自動化數據表描述篩選、釘選或節點所支援的屬性和方法。 如果 BDA 迷你驅動程式提供 AVStream 已實作的屬性或方法處理程式,BDA 迷你驅動程式的實作會取代 AVStream 的 。
BDA 微型驅動程式應該定義屬性和方法集合的陣列,然後為這些集合陣列定義自動化表格,以便微型驅動程式可以自動處理請求。 如需迷你驅動程式如何定義本節所參考的屬性集的範例,請參閱 判斷 BDA 裝置拓撲 一節。
下列程式碼片段顯示篩選的自動化資料表和屬性與方法集的陣列範例:
//
// Filter Level Property Set supported
//
// This array defines a property set supported by the
// filter that is exposed by the minidriver.
//
DEFINE_KSPROPERTY_SET_TABLE(FilterPropertySets)
{
DEFINE_KSPROPERTY_SET
(
&KSPROPSETID_BdaTopology, // Set
SIZEOF_ARRAY(FilterTopologyProperties), // PropertiesCount
FilterTopologyProperties, // PropertyItems
0, // FastIoCount
NULL // FastIoTable
)
};
//
// Filter Level Method Sets supported
//
// This array defines method sets supported by the
// filter that is exposed by the minidriver.
//
DEFINE_KSMETHOD_SET_TABLE(FilterMethodSets)
{
DEFINE_KSMETHOD_SET
(
&KSMETHODSETID_BdaChangeSync, // Set
SIZEOF_ARRAY(BdaChangeSyncMethods), // MethodsCount
BdaChangeSyncMethods, // MethodItems
0, // FastIoCount
NULL // FastIoTable
),
DEFINE_KSMETHOD_SET
(
&KSMETHODSETID_BdaDeviceConfiguration, // Set
SIZEOF_ARRAY(BdaDeviceConfigurationMethods),// MethodsCount
BdaDeviceConfigurationMethods, // MethodItems
0, // FastIoCount
NULL // FastIoTable
)
};
//
// Filter Automation Table
//
// Lists all arrays of property and method sets for the filter that
// is exposed by the minidriver.
//
DEFINE_KSAUTOMATION_TABLE(FilterAutomation) {
DEFINE_KSAUTOMATION_PROPERTIES(FilterPropertySets),
DEFINE_KSAUTOMATION_METHODS(FilterMethodSets),
DEFINE_KSAUTOMATION_EVENTS_NULL
};
下列代碼段顯示節點自動化資料表和屬性集陣列的範例:
//
// RF tuner node property set supported
//
// This array defines a property set supported by the
// RF Tuner Node associated with the antenna input pin.
//
DEFINE_KSPROPERTY_SET_TABLE(RFNodePropertySets)
{
DEFINE_KSPROPERTY_SET
(
&KSPROPSETID_BdaFrequencyFilter, // Set
SIZEOF_ARRAY(RFNodeFrequencyProperties), // PropertiesCount
RFNodeFrequencyProperties, // PropertyItems
0, // FastIoCount
NULL // FastIoTable
)
};
//
// Radio frequency tuner node automation table
//
//
DEFINE_KSAUTOMATION_TABLE(RFTunerNodeAutomation) {
DEFINE_KSAUTOMATION_PROPERTIES( RFNodePropertySets),
DEFINE_KSAUTOMATION_METHODS_NULL,
DEFINE_KSAUTOMATION_EVENTS_NULL
};