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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:34:13 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:34:13 (GMT) |
commit | 67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch) | |
tree | 1dbf50b3dff8d5ca7e9344733968c72704eb15ff /src/3rdparty/phonon/ds9/compointer.h | |
download | Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.zip Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.gz Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.bz2 |
Long live Qt!
Diffstat (limited to 'src/3rdparty/phonon/ds9/compointer.h')
-rw-r--r-- | src/3rdparty/phonon/ds9/compointer.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/ds9/compointer.h b/src/3rdparty/phonon/ds9/compointer.h new file mode 100644 index 0000000..180febf --- /dev/null +++ b/src/3rdparty/phonon/ds9/compointer.h @@ -0,0 +1,114 @@ +/* This file is part of the KDE project. + +Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). + +This library is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation, either version 2.1 or 3 of the License. + +This library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this library. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef PHONON_COMPOINTER_H +#define PHONON_COMPOINTER_H + +#include <windows.h> +#include <dshow.h> + +QT_BEGIN_NAMESPACE + +namespace Phonon +{ + namespace DS9 + { + template<class T> class ComPointer + { + public: + explicit ComPointer(T *t = 0) : m_t(t) + { + } + + explicit ComPointer( const IID &clsid, const IID &iid) : m_t(0) + { + ::CoCreateInstance(clsid, 0, CLSCTX_INPROC_SERVER, iid, + reinterpret_cast<void**>(&m_t)); + } + + explicit ComPointer(IUnknown *_unk, const GUID &guid) : m_t(0) + { + if (_unk) { + _unk->QueryInterface(guid, reinterpret_cast<void**>(&m_t)); + } + } + + ComPointer(const ComPointer<T> &other) : m_t(other.m_t) + { + if (m_t) { + m_t->AddRef(); + } + } + + ComPointer<T> &operator=(const ComPointer<T> &other) + { + if (other.m_t) { + other.m_t->AddRef(); + } + if (m_t) { + m_t->Release(); + } + m_t = other.m_t; + return *this; + } + + T *operator->() const + { + return m_t; + } + + operator T*() const + { + return m_t; + } + + //the following method first reinitialize their value to avoid mem leaks + T ** pparam() + { + if (m_t) { + m_t->Release(); + m_t = 0; + } + return &m_t; + } + + bool operator==(const ComPointer<T> &other) const + { + return m_t == other.m_t; + } + + bool operator!=(const ComPointer<T> &other) const + { + return m_t != other.m_t; + } + + ~ComPointer() + { + if (m_t) { + m_t->Release(); + } + } + + private: + T *m_t; + }; + } +} + +QT_END_NAMESPACE + +#endif |