1 files changed, 126 insertions, 0 deletions
diff --git a/src/plugins/directshow/helpers/directshowpinenum.cpp b/src/plugins/directshow/helpers/directshowpinenum.cpp
new file mode 100644
index 000000000..61aca8b9c
--- /dev/null
+++ b/src/plugins/directshow/helpers/directshowpinenum.cpp
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "directshowpinenum.h"
+#include "directshowbasefilter.h"
+
+DirectShowPinEnum::DirectShowPinEnum(DirectShowBaseFilter *filter)
+    : m_filter(filter)
+    , m_index(0)
+{
+    m_filter->AddRef();
+    const QList<DirectShowPin *> pinList = filter->pins();
+    for (DirectShowPin *pin : pinList) {
+        pin->AddRef();
+        m_pins.append(pin);
+    }
+}
+
+DirectShowPinEnum::DirectShowPinEnum(const QList<IPin *> &pins)
+    : m_filter(NULL)
+    , m_pins(pins)
+    , m_index(0)
+{
+    for (IPin *pin : qAsConst(m_pins))
+        pin->AddRef();
+}
+
+DirectShowPinEnum::~DirectShowPinEnum()
+{
+    for (IPin *pin : qAsConst(m_pins))
+        pin->Release();
+    if (m_filter)
+        m_filter->Release();
+}
+
+HRESULT DirectShowPinEnum::getInterface(REFIID riid, void **ppvObject)
+{
+    if (riid == IID_IEnumPins) {
+        return GetInterface(static_cast<IEnumPins *>(this), ppvObject);
+    } else {
+        return DirectShowObject::getInterface(riid, ppvObject);
+    }
+}
+
+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) {
+        if (m_filter)
+            *ppEnum = new DirectShowPinEnum(m_filter);
+        else
+            *ppEnum = new DirectShowPinEnum(m_pins);
+
+        return S_OK;
+    } else {
+        return E_POINTER;
+    }
+}