From 10462d3a41de547d8bfd6aa4f7a64e7bb2bcb581 Mon Sep 17 00:00:00 2001
From: Johannes Anderwald <johannes.anderwald@reactos.org>
Date: Mon, 12 Jan 2009 18:40:08 +0000
Subject: [PATCH] - fix me (add missing file)

svn path=/trunk/; revision=38732
---
 .../wdm/audio/backpln/portcls/connection.c    | 148 ++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 reactos/drivers/wdm/audio/backpln/portcls/connection.c

diff --git a/reactos/drivers/wdm/audio/backpln/portcls/connection.c b/reactos/drivers/wdm/audio/backpln/portcls/connection.c
new file mode 100644
index 00000000000..8731b9b049f
--- /dev/null
+++ b/reactos/drivers/wdm/audio/backpln/portcls/connection.c
@@ -0,0 +1,148 @@
+#include "private.h"
+
+
+NTSYSAPI
+BOOLEAN
+NTAPI
+RtlCreateUnicodeString(
+    PUNICODE_STRING DestinationString,
+    PCWSTR SourceString
+);
+
+static
+NTSTATUS
+RegisterConnection(
+    IN OUT PDEVICE_OBJECT DeviceObject,
+    IN PUNKNOWN FromUnknown,
+    IN PUNICODE_STRING FromString,
+    IN ULONG FromPin,
+    IN PUNKNOWN ToUnknown,
+    IN PUNICODE_STRING ToString,
+    IN ULONG ToPin)
+{
+    PHYSICAL_CONNECTION *NewConnection;
+    UNICODE_STRING FromUnicodeString = {0, 0, 0};
+    UNICODE_STRING ToUnicodeString  = {0, 0, 0};
+    ISubdevice * FromSubDevice = NULL;
+    ISubdevice * ToSubDevice = NULL;
+    PCExtension* DeviceExt;
+
+    DeviceExt = (PCExtension*)DeviceObject->DeviceExtension;
+
+
+    NTSTATUS Status = STATUS_SUCCESS;
+
+    if (FromUnknown)
+    {
+        Status = FromUnknown->lpVtbl->QueryInterface(FromUnknown, &IID_ISubdevice, (PVOID*)&FromSubDevice);
+        if (!NT_SUCCESS(Status))
+            return STATUS_INVALID_PARAMETER;
+    }
+    else
+    {
+        if (!RtlCreateUnicodeString(&FromUnicodeString, (PCWSTR)FromString))
+            return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+    if (ToUnknown)
+    {
+        Status = ToUnknown->lpVtbl->QueryInterface(ToUnknown, &IID_ISubdevice, (PVOID*)&ToSubDevice);
+    }
+    else
+    {
+        if (!RtlCreateUnicodeString(&ToUnicodeString, (PCWSTR)ToString))
+            Status = STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+    if (!NT_SUCCESS(Status))
+    {
+        goto cleanup;
+    }
+
+    NewConnection = ExAllocatePoolWithTag(NonPagedPool, sizeof(PHYSICAL_CONNECTION), TAG_PORTCLASS);
+    if (!NewConnection)
+    {
+        Status = STATUS_INSUFFICIENT_RESOURCES;
+        goto cleanup;
+    }
+
+    NewConnection->FromPin = FromPin;
+    NewConnection->FromSubDevice = FromSubDevice;
+    NewConnection->FromUnicodeString = FromUnicodeString.Buffer;
+    NewConnection->ToPin = ToPin;
+    NewConnection->ToSubDevice = ToSubDevice;
+    NewConnection->ToUnicodeString = ToUnicodeString.Buffer;
+
+
+    InsertTailList(&DeviceExt->PhysicalConnectionList, &NewConnection->Entry);
+    return STATUS_SUCCESS;
+
+cleanup:
+
+    if (FromSubDevice)
+        FromSubDevice->lpVtbl->Release(FromSubDevice);
+
+    if (ToSubDevice)
+        ToSubDevice->lpVtbl->Release(ToSubDevice);
+
+    if (FromUnicodeString.Buffer)
+        RtlFreeUnicodeString(&FromUnicodeString);
+
+    if (ToUnicodeString.Buffer)
+        RtlFreeUnicodeString(&ToUnicodeString);
+
+    return Status;
+}
+
+
+
+/*
+ * @implemented
+ */
+NTSTATUS NTAPI
+PcRegisterPhysicalConnection(
+    IN  PDEVICE_OBJECT DeviceObject,
+    IN  PUNKNOWN FromUnknown,
+    IN  ULONG FromPin,
+    IN  PUNKNOWN ToUnknown,
+    IN  ULONG ToPin)
+{
+    if (!DeviceObject || !FromUnknown || !ToUnknown)
+        return STATUS_INVALID_PARAMETER;
+
+    return RegisterConnection(DeviceObject, FromUnknown, NULL, FromPin, ToUnknown, NULL, ToPin);
+}
+
+/*
+ * @implemented
+ */
+NTSTATUS NTAPI
+PcRegisterPhysicalConnectionFromExternal(
+    IN  PDEVICE_OBJECT DeviceObject,
+    IN  PUNICODE_STRING FromString,
+    IN  ULONG FromPin,
+    IN  PUNKNOWN ToUnknown,
+    IN  ULONG ToPin)
+{
+    if (!DeviceObject || !FromString || !ToUnknown)
+        return STATUS_INVALID_PARAMETER;
+
+    return RegisterConnection(DeviceObject, NULL, FromString, FromPin, ToUnknown, NULL, ToPin);
+}
+
+/*
+ * @implemented
+ */
+NTSTATUS NTAPI
+PcRegisterPhysicalConnectionToExternal(
+    IN  PDEVICE_OBJECT DeviceObject,
+    IN  PUNKNOWN FromUnknown,
+    IN  ULONG FromPin,
+    IN  PUNICODE_STRING ToString,
+    IN  ULONG ToPin)
+{
+    if (!DeviceObject || !FromUnknown || !ToString)
+        return STATUS_INVALID_PARAMETER;
+
+    return RegisterConnection(DeviceObject, FromUnknown, NULL, FromPin, NULL, ToString, ToPin);
+}