[janderwald] 50094: [PSDK] - Add ks gate functions

Author: janderwald
Date: Wed Dec 22 13:52:25 2010
New Revision: 50094

URL: http://svn.reactos.org/svn/reactos?rev=50094&view=rev
Log:
[PSDK]
- Add ks gate functions

Modified:
    branches/audio-bringup/include/psdk/ks.h

Modified: branches/audio-bringup/include/psdk/ks.h
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/include/psdk/ks.h…
==============================================================================
--- branches/audio-bringup/include/psdk/ks.h [iso-8859-1] (original)
+++ branches/audio-bringup/include/psdk/ks.h [iso-8859-1] Wed Dec 22 13:52:25 2010
@@ -2928,6 +2928,232 @@
     XP / DX8
 */
 #if defined(_NTDDK_)
+
+typedef struct _KSGATE KSGATE, *PKSGATE;
+
+struct _KSGATE {
+    LONG Count;
+    PKSGATE NextGate;
+};
+
+#ifndef _NTOS_
+
+static
+void
+__inline
+KsGateTurnInputOn(
+    IN PKSGATE Gate OPTIONAL)
+{
+    while (Gate && (InterlockedIncrement(&Gate->Count) == 1))
+    {
+        Gate = Gate->NextGate;
+    }
+}
+
+static
+void
+__inline
+KsGateTurnInputOff(
+    IN PKSGATE Gate OPTIONAL)
+{
+    while (Gate && (InterlockedDecrement(&Gate->Count) == 0))
+    {
+        Gate = Gate->NextGate;
+    }
+}
+
+static
+BOOLEAN
+__inline
+KsGateGetStateUnsafe(
+    IN PKSGATE Gate)
+{
+    ASSERT(Gate);
+    return((BOOLEAN)(Gate->Count > 0));
+}
+
+static
+BOOLEAN
+__inline
+KsGateCaptureThreshold(
+    IN PKSGATE Gate)
+{
+    BOOLEAN captured;
+
+    ASSERT(Gate);
+
+    captured = (BOOLEAN)(InterlockedCompareExchange(&Gate->Count,0,1) == 1);
+
+    if (captured)
+    {
+        KsGateTurnInputOff(Gate->NextGate);
+    }
+
+    return captured;
+}
+
+static
+void
+__inline
+KsGateInitialize(
+    IN PKSGATE Gate,
+    IN LONG InitialCount,
+    IN PKSGATE NextGate OPTIONAL,
+    IN BOOLEAN StateToPropagate
+    )
+{
+    ASSERT(Gate);
+    Gate->Count = InitialCount;
+    Gate->NextGate = NextGate;
+
+    if (NextGate)
+    {
+        if (InitialCount > 0)
+        {
+            if (StateToPropagate)
+            {
+                KsGateTurnInputOn(NextGate);
+            }
+        }
+        else
+        {
+            if (!StateToPropagate)
+            {
+                KsGateTurnInputOff(NextGate);
+            }
+        }
+    }
+}
+
+static
+void
+__inline
+KsGateInitializeAnd(
+    IN PKSGATE AndGate,
+    IN PKSGATE NextOrGate OPTIONAL)
+{
+    KsGateInitialize(AndGate,1,NextOrGate,TRUE);
+}
+
+static
+void
+__inline
+KsGateInitializeOr(
+    IN PKSGATE OrGate,
+    IN PKSGATE NextAndGate OPTIONAL)
+{
+    KsGateInitialize(OrGate,0,NextAndGate,FALSE);
+}
+
+static
+void
+__inline
+KsGateAddOnInputToAnd(
+    IN PKSGATE AndGate)
+{
+    UNREFERENCED_PARAMETER (AndGate);
+}
+
+static
+void
+__inline
+KsGateAddOffInputToAnd(
+    IN PKSGATE AndGate)
+{
+    KsGateTurnInputOff(AndGate);
+}
+
+static
+void
+__inline
+KsGateRemoveOnInputFromAnd(
+    IN PKSGATE AndGate)
+{
+    UNREFERENCED_PARAMETER (AndGate);
+}
+
+static
+void
+__inline
+KsGateRemoveOffInputFromAnd(
+    IN PKSGATE AndGate)
+{
+    KsGateTurnInputOn(AndGate);
+}
+
+static
+void
+__inline
+KsGateAddOnInputToOr(
+    IN PKSGATE OrGate)
+{
+    KsGateTurnInputOn(OrGate);
+}
+
+static
+void
+__inline
+KsGateAddOffInputToOr(
+    IN PKSGATE OrGate)
+{
+    UNREFERENCED_PARAMETER (OrGate);
+}
+
+static
+void
+__inline
+KsGateRemoveOnInputFromOr(
+    IN PKSGATE OrGate) 
+{
+    KsGateTurnInputOff(OrGate);
+}
+
+static
+void
+__inline
+KsGateRemoveOffInputFromOr(
+    IN PKSGATE OrGate)
+{
+    UNREFERENCED_PARAMETER (OrGate);
+}
+
+static
+void
+__inline
+KsGateTerminateAnd(
+    IN PKSGATE AndGate)
+{
+    ASSERT(AndGate);
+    if (KsGateGetStateUnsafe(AndGate))
+    {
+        KsGateRemoveOnInputFromOr(AndGate->NextGate);
+    }
+    else
+    {
+        KsGateRemoveOffInputFromOr(AndGate->NextGate);
+    }
+}
+
+static
+void
+__inline
+KsGateTerminateOr(
+    IN PKSGATE OrGate)
+{
+    ASSERT(OrGate);
+    if (KsGateGetStateUnsafe(OrGate))
+    {
+        KsGateRemoveOnInputFromAnd(OrGate->NextGate);
+    }
+    else
+    {
+        KsGateRemoveOffInputFromAnd(OrGate->NextGate);
+    }
+}
+
+#endif
+
+
 struct _KSMAPPING {
     PHYSICAL_ADDRESS PhysicalAddress;
     ULONG ByteCount;
@@ -2940,13 +3166,7 @@
     KSSTREAM_POINTER_STATE_LOCKED
 } KSSTREAM_POINTER_STATE;
 
-typedef struct _KSGATE KSGATE, *PKSGATE;
 typedef struct _KSPROCESSPIN_INDEXENTRY KSPROCESSPIN_INDEXENTRY,
*PKSPROCESSPIN_INDEXENTRY;
-
-struct _KSGATE {
-    LONG Count;
-    PKSGATE NextGate;
-};
 
 struct _KSSTREAM_POINTER_OFFSET
 {