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Diffstat (limited to 'examples/multimedia/video/qmlvideo/trace.h')
-rw-r--r-- | examples/multimedia/video/qmlvideo/trace.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/examples/multimedia/video/qmlvideo/trace.h b/examples/multimedia/video/qmlvideo/trace.h new file mode 100644 index 000000000..e6083f439 --- /dev/null +++ b/examples/multimedia/video/qmlvideo/trace.h @@ -0,0 +1,95 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef TRACE_H +#define TRACE_H + +#include <QtCore/QDebug> + +#define ENABLE_TRACE +//#define VERBOSE_TRACE + +namespace Trace { + +class NullDebug +{ +public: + template <typename T> + NullDebug& operator<<(const T&) { return *this; } +}; + +inline NullDebug nullDebug() { return NullDebug(); } + +template <typename T> +struct PtrWrapper +{ + PtrWrapper(const T *ptr) : m_ptr(ptr) { } + const T *const m_ptr; +}; + +} // namespace Trace + +template <typename T> +inline QDebug& operator<<(QDebug &debug, const Trace::PtrWrapper<T> &wrapper) +{ + debug.nospace() << "[" << (void*)wrapper.m_ptr << "]"; + return debug.space(); +} + +template<typename T> +inline const void *qtVoidPtr(const T *ptr) +{ return static_cast<const void *>(ptr); } + +#define qtThisPtr() qtVoidPtr(this) + +#ifdef ENABLE_TRACE + inline QDebug qtTrace() { return qDebug() << "[qmlvideo]"; } +# ifdef VERBOSE_TRACE + inline QDebug qtVerboseTrace() { return qtTrace(); } +# else + inline Trace::NullDebug qtVerboseTrace() { return Trace::nullDebug(); } +# endif +#else + inline Trace::NullDebug qtTrace() { return Trace::nullDebug(); } + inline Trace::NullDebug qtVerboseTrace() { return Trace::nullDebug(); } +#endif + +#endif // TRACE_H |