diff options
author | Christian Strømme <christian.stromme@qt.io> | 2016-11-09 15:29:39 +0100 |
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committer | Yoann Lopes <yoann.lopes@qt.io> | 2017-01-27 13:27:20 +0000 |
commit | ade8f281cb1e4f4e03fc3bfdf8a0b7b9ccd819c9 (patch) | |
tree | e7bc5a3f04cd143dd0120d1fbafaa57136bef918 /src/plugins/directshow/helpers/directshowutils.h | |
parent | 57a4cabd78aba3d6c1dd4802b0e3baf5ed3e4758 (diff) |
DirectShow: Add utility class
Centralized place for helper functions etc.
Change-Id: Ia4474d0681a37fc95a100a3766800141a8b1d900
Reviewed-by: Yoann Lopes <yoann.lopes@qt.io>
Diffstat (limited to 'src/plugins/directshow/helpers/directshowutils.h')
-rw-r--r-- | src/plugins/directshow/helpers/directshowutils.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/plugins/directshow/helpers/directshowutils.h b/src/plugins/directshow/helpers/directshowutils.h new file mode 100644 index 000000000..09c81c257 --- /dev/null +++ b/src/plugins/directshow/helpers/directshowutils.h @@ -0,0 +1,87 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef DIRECTSHOWUTILS_H +#define DIRECTSHOWUTILS_H + +#include "directshowglobal.h" + +QT_BEGIN_NAMESPACE + +namespace DirectShowUtils +{ +template <typename T> +void safeRelease(T **iface) { + if (!iface) + return; + + if (!*iface) + return; + + (*iface)->Release(); + *iface = nullptr; +} + +template <typename T> +struct ScopedSafeRelease +{ + T **iunknown; + ~ScopedSafeRelease() + { + DirectShowUtils::safeRelease(iunknown); + } +}; + +bool getPin(IBaseFilter *filter, PIN_DIRECTION pinDirection, IPin **pin, HRESULT *hrOut); +bool isPinConnected(IPin *pin, HRESULT *hrOut = nullptr); +bool hasPinDirection(IPin *pin, PIN_DIRECTION direction, HRESULT *hrOut = nullptr); +bool matchPin(IPin *pin, PIN_DIRECTION pinDirection, BOOL shouldBeConnected, HRESULT *hrOut = nullptr); +bool findUnconnectedPin(IBaseFilter *filter, PIN_DIRECTION pinDirection, IPin **pin, HRESULT *hrOut = nullptr); +bool connectFilters(IGraphBuilder *graph, IPin *outputPin, IBaseFilter *filter, HRESULT *hrOut = nullptr); +bool connectFilters(IGraphBuilder *graph, IBaseFilter *filter, IPin *inputPin, HRESULT *hrOut = nullptr); +bool connectFilters(IGraphBuilder *graph, + IBaseFilter *upstreamFilter, + IBaseFilter *downstreamFilter, + bool autoConnect = false, + HRESULT *hrOut = nullptr); +} + +QT_END_NAMESPACE + +#endif // DIRECTSHOWUTILS_H |