--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/multimedia/directshow/player/directshowpinenum.cpp	Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "directshowpinenum.h"
+
+
+DirectShowPinEnum::DirectShowPinEnum(const QList<IPin *> &pins)
+    : m_ref(1)
+    , m_pins(pins)
+    , m_index(0)
+{
+    foreach (IPin *pin, m_pins)
+        pin->AddRef();
+}
+
+DirectShowPinEnum::~DirectShowPinEnum()
+{
+    foreach (IPin *pin, m_pins)
+        pin->Release();
+}
+
+HRESULT DirectShowPinEnum::QueryInterface(REFIID riid, void **ppvObject)
+{
+    if (riid == IID_IUnknown
+            || riid == IID_IEnumPins) {
+        AddRef();
+
+        *ppvObject = static_cast<IEnumPins *>(this);
+
+        return S_OK;
+    } else {
+        *ppvObject = 0;
+
+        return E_NOINTERFACE;
+    }
+}
+
+ULONG DirectShowPinEnum::AddRef()
+{
+    return InterlockedIncrement(&m_ref);
+}
+
+ULONG DirectShowPinEnum::Release()
+{
+    ULONG ref = InterlockedDecrement(&m_ref);
+
+    if (ref == 0) {
+        delete this;
+    }
+
+    return ref;
+}
+
+HRESULT DirectShowPinEnum::Next(ULONG cPins, IPin **ppPins, ULONG *pcFetched)
+{
+    if (ppPins && (pcFetched || cPins == 1)) {
+        ULONG count = qBound<ULONG>(0, cPins, m_pins.count() - m_index);
+
+        for (ULONG i = 0; i < count; ++i, ++m_index) {
+            ppPins[i] = m_pins.at(m_index);
+            ppPins[i]->AddRef();
+        }
+
+        if (pcFetched)
+            *pcFetched = count;
+
+        return count == cPins ? S_OK : S_FALSE;
+    } else {
+        return E_POINTER;
+    }
+}
+
+HRESULT DirectShowPinEnum::Skip(ULONG cPins)
+{
+    m_index = qMin(int(m_index + cPins), m_pins.count());
+
+    return m_index < m_pins.count() ? S_OK : S_FALSE;
+}
+
+HRESULT DirectShowPinEnum::Reset()
+{
+    m_index = 0;
+
+    return S_OK;
+}
+
+HRESULT DirectShowPinEnum::Clone(IEnumPins **ppEnum)
+{
+    if (ppEnum) {
+        *ppEnum = new DirectShowPinEnum(m_pins);
+
+        return S_OK;
+    } else {
+        return E_POINTER;
+    }
+}