diff options
author | Michael Goddard <michael.goddard@nokia.com> | 2011-06-29 13:38:46 +1000 |
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committer | Michael Goddard <michael.goddard@nokia.com> | 2011-06-29 13:38:46 +1000 |
commit | 2a34e88c1e1ced28e75c487cd13402e1c9cf9fa3 (patch) | |
tree | e6c1b770c5c47212792a1f9344fa034ea3e54c44 /src/plugins/directshow/player/directshoweventloop.cpp |
Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1:
2c82d5611655e5967f5c5095af50c0991c4378b2
Diffstat (limited to 'src/plugins/directshow/player/directshoweventloop.cpp')
-rw-r--r-- | src/plugins/directshow/player/directshoweventloop.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/plugins/directshow/player/directshoweventloop.cpp b/src/plugins/directshow/player/directshoweventloop.cpp new file mode 100644 index 000000000..f863aa835 --- /dev/null +++ b/src/plugins/directshow/player/directshoweventloop.cpp @@ -0,0 +1,150 @@ +/**************************************************************************** +** +** 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 <directshoweventloop.h> + +#include <QtCore/qcoreapplication.h> +#include <QtCore/qcoreevent.h> + +class DirectShowPostedEvent +{ +public: + DirectShowPostedEvent(QObject *receiver, QEvent *event) + : receiver(receiver) + , event(event) + , next(0) + { + } + + ~DirectShowPostedEvent() + { + delete event; + } + + QObject *receiver; + QEvent *event; + DirectShowPostedEvent *next; +}; + +DirectShowEventLoop::DirectShowEventLoop(QObject *parent) + : QObject(parent) + , m_postsHead(0) + , m_postsTail(0) + , m_eventHandle(::CreateEvent(0, 0, 0, 0)) + , m_waitHandle(::CreateEvent(0, 0, 0, 0)) +{ +} + +DirectShowEventLoop::~DirectShowEventLoop() +{ + ::CloseHandle(m_eventHandle); + ::CloseHandle(m_waitHandle); + + for (DirectShowPostedEvent *post = m_postsHead; post; post = m_postsHead) { + m_postsHead = m_postsHead->next; + + delete post; + } +} + +void DirectShowEventLoop::wait(QMutex *mutex) +{ + ::ResetEvent(m_waitHandle); + + mutex->unlock(); + + HANDLE handles[] = { m_eventHandle, m_waitHandle }; + while (::WaitForMultipleObjects(2, handles, false, INFINITE) == WAIT_OBJECT_0) + processEvents(); + + mutex->lock(); +} + +void DirectShowEventLoop::wake() +{ + ::SetEvent(m_waitHandle); +} + +void DirectShowEventLoop::postEvent(QObject *receiver, QEvent *event) +{ + QMutexLocker locker(&m_mutex); + + DirectShowPostedEvent *post = new DirectShowPostedEvent(receiver, event); + + if (m_postsTail) + m_postsTail->next = post; + else + m_postsHead = post; + + m_postsTail = post; + + QCoreApplication::postEvent(this, new QEvent(QEvent::User)); + ::SetEvent(m_eventHandle); +} + +void DirectShowEventLoop::customEvent(QEvent *event) +{ + if (event->type() == QEvent::User) { + processEvents(); + } else { + QObject::customEvent(event); + } +} + +void DirectShowEventLoop::processEvents() +{ + QMutexLocker locker(&m_mutex); + + ::ResetEvent(m_eventHandle); + + while(m_postsHead) { + DirectShowPostedEvent *post = m_postsHead; + m_postsHead = m_postsHead->next; + + if (!m_postsHead) + m_postsTail = 0; + + locker.unlock(); + QCoreApplication::sendEvent(post->receiver, post->event); + delete post; + locker.relock(); + } +} |