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1 files changed, 203 insertions, 0 deletions

diff --git a/avstream/avshws/filter.cpp b/avstream/avshws/filter.cpp
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+/**************************************************************************
+
+    AVStream Simulated Hardware Sample
+
+    Copyright (c) 2001, Microsoft Corporation.
+
+    File:
+
+        filter.cpp
+
+    Abstract:
+
+        This file contains the filter level implementation for the 
+        capture filter.
+
+    History:
+
+        created 3/12/2001
+
+**************************************************************************/
+
+#include "avshws.h"
+
+/**************************************************************************
+
+    PAGEABLE CODE
+
+**************************************************************************/
+
+#ifdef ALLOC_PRAGMA
+#pragma code_seg("PAGE")
+#endif // ALLOC_PRAGMA
+
+
+NTSTATUS
+CCaptureFilter::
+DispatchCreate (
+    IN PKSFILTER Filter,
+    IN PIRP Irp
+    )
+
+/*++
+
+Routine Description:
+
+    This is the creation dispatch for the capture filter.  It creates
+    the CCaptureFilter object, associates it with the AVStream filter
+    object, and bag the CCaptureFilter for later cleanup.
+
+Arguments:
+
+    Filter -
+        The AVStream filter being created
+
+    Irp -
+        The creation Irp
+
+Return Value:
+    
+    Success / failure
+
+--*/
+
+{
+
+    PAGED_CODE();
+
+    NTSTATUS Status = STATUS_SUCCESS;
+
+    CCaptureFilter *CapFilter = new (NonPagedPool) CCaptureFilter (Filter);
+
+    if (!CapFilter) {
+        //
+        // Return failure if we couldn't create the filter.
+        //
+        Status = STATUS_INSUFFICIENT_RESOURCES;
+
+    } else {
+        //
+        // Add the item to the object bag if we we were successful. 
+        // Whenever the filter closes, the bag is cleaned up and we will be
+        // freed.
+        //
+        Status = KsAddItemToObjectBag (
+            Filter -> Bag,
+            reinterpret_cast <PVOID> (CapFilter),
+            reinterpret_cast <PFNKSFREE> (CCaptureFilter::Cleanup)
+            );
+
+        if (!NT_SUCCESS (Status)) {
+            delete CapFilter;
+        } else {
+            Filter -> Context = reinterpret_cast <PVOID> (CapFilter);
+        }
+
+    }
+
+    return Status;
+
+}
+
+/**************************************************************************
+
+    DESCRIPTOR AND DISPATCH LAYOUT
+
+**************************************************************************/
+
+GUID g_PINNAME_VIDEO_CAPTURE = {STATIC_PINNAME_VIDEO_CAPTURE};
+
+//
+// CaptureFilterCategories:
+//
+// The list of category GUIDs for the capture filter.
+//
+const
+GUID
+CaptureFilterCategories [CAPTURE_FILTER_CATEGORIES_COUNT] = {
+    STATICGUIDOF (KSCATEGORY_VIDEO),
+    STATICGUIDOF (KSCATEGORY_CAPTURE),
+    STATICGUIDOF (KSCATEGORY_VIDEO_CAMERA)
+};
+
+//
+// CaptureFilterPinDescriptors:
+//
+// The list of pin descriptors on the capture filter.  
+//
+const 
+KSPIN_DESCRIPTOR_EX
+CaptureFilterPinDescriptors [CAPTURE_FILTER_PIN_COUNT] = {
+    //
+    // Video Capture Pin
+    //
+    {
+        &CapturePinDispatch,
+        NULL,             
+        {
+            0,                              // Interfaces (NULL, 0 == default)
+            NULL,
+            0,                              // Mediums (NULL, 0 == default)
+            NULL,
+            SIZEOF_ARRAY(CapturePinDataRanges),// Range Count
+            CapturePinDataRanges,           // Ranges
+            KSPIN_DATAFLOW_OUT,             // Dataflow
+            KSPIN_COMMUNICATION_BOTH,       // Communication
+            &PIN_CATEGORY_CAPTURE,          // Category
+            &g_PINNAME_VIDEO_CAPTURE,       // Name
+            0                               // Reserved
+        },
+#ifdef _X86_                                
+        KSPIN_FLAG_GENERATE_MAPPINGS |      // Pin Flags
+#endif
+        KSPIN_FLAG_PROCESS_IN_RUN_STATE_ONLY,
+        1,                                  // Instances Possible
+        1,                                  // Instances Necessary
+        &CapturePinAllocatorFraming,        // Allocator Framing
+        reinterpret_cast <PFNKSINTERSECTHANDLEREX> 
+            (CCapturePin::IntersectHandler)
+    }
+};
+
+//
+// CaptureFilterDispatch:
+//
+// This is the dispatch table for the capture filter.  It provides notification
+// of creation, closure, processing (for filter-centrics, not for the capture
+// filter), and resets (for filter-centrics, not for the capture filter).
+//
+const 
+KSFILTER_DISPATCH
+CaptureFilterDispatch = {
+    CCaptureFilter::DispatchCreate,         // Filter Create
+    NULL,                                   // Filter Close
+    NULL,                                   // Filter Process
+    NULL                                    // Filter Reset
+};
+
+
+//
+// CaptureFilterDescription:
+//
+// The descriptor for the capture filter.  We don't specify any topology
+// since there's only one pin on the filter.  Realistically, there would
+// be some topological relationships here because there would be input 
+// pins from crossbars and the like.
+//
+const 
+KSFILTER_DESCRIPTOR 
+CaptureFilterDescriptor = {
+    &CaptureFilterDispatch,                 // Dispatch Table
+    NULL,                                   // Automation Table
+    KSFILTER_DESCRIPTOR_VERSION,            // Version
+    0,                                      // Flags
+    &KSNAME_Filter,                         // Reference GUID
+    DEFINE_KSFILTER_PIN_DESCRIPTORS (CaptureFilterPinDescriptors),
+    DEFINE_KSFILTER_CATEGORIES (CaptureFilterCategories),
+    0,
+    sizeof (KSNODE_DESCRIPTOR),
+    NULL,
+    0,
+    NULL,
+    NULL                                    // Component ID
+};
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