diff options
Diffstat (limited to 'src/plugins/qnx/common')
| -rw-r--r-- | src/plugins/qnx/common/common.pri | 7 | ||||
| -rw-r--r-- | src/plugins/qnx/common/windowgrabber.cpp | 367 | ||||
| -rw-r--r-- | src/plugins/qnx/common/windowgrabber.h | 109 |
3 files changed, 483 insertions, 0 deletions
diff --git a/src/plugins/qnx/common/common.pri b/src/plugins/qnx/common/common.pri new file mode 100644 index 000000000..1a6693474 --- /dev/null +++ b/src/plugins/qnx/common/common.pri @@ -0,0 +1,7 @@ +INCLUDEPATH += $$PWD + +HEADERS += \ + $$PWD/windowgrabber.h + +SOURCES += \ + $$PWD/windowgrabber.cpp diff --git a/src/plugins/qnx/common/windowgrabber.cpp b/src/plugins/qnx/common/windowgrabber.cpp new file mode 100644 index 000000000..5ed54b87e --- /dev/null +++ b/src/plugins/qnx/common/windowgrabber.cpp @@ -0,0 +1,367 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Research In Motion +** Contact: http://www.qt-project.org/legal +** +** 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 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "windowgrabber.h" + +#include <QAbstractEventDispatcher> +#include <QDebug> +#include <QGuiApplication> +#include <QImage> +#include <qpa/qplatformnativeinterface.h> + +#ifdef Q_OS_BLACKBERRY +#include <bps/event.h> +#include <bps/screen.h> +#endif +#include <errno.h> + +QT_BEGIN_NAMESPACE + +WindowGrabber::WindowGrabber(QObject *parent) + : QObject(parent), + m_screenBuffer(0), + m_screenBufferWidth(-1), + m_screenBufferHeight(-1), + m_active(false), + m_screenContextInitialized(false), + m_screenPixmapInitialized(false), + m_screenPixmapBufferInitialized(false) +{ + // grab the window frame with 60 frames per second + m_timer.setInterval(1000/60); + + connect(&m_timer, SIGNAL(timeout()), SLOT(grab())); + + QCoreApplication::eventDispatcher()->installNativeEventFilter(this); +} + +WindowGrabber::~WindowGrabber() +{ + QCoreApplication::eventDispatcher()->removeNativeEventFilter(this); +} + +void WindowGrabber::setFrameRate(int frameRate) +{ + m_timer.setInterval(1000/frameRate); +} + +void WindowGrabber::setWindowId(const QByteArray &windowId) +{ + m_windowId = windowId; +} + +void WindowGrabber::start() +{ + int result = 0; + +#ifdef Q_OS_BLACKBERRY_TABLET + + // HACK: On the Playbook, screen_read_window() will fail for invisible windows. + // To workaround this, make the window visible again, but set a global + // alpha of less than 255. The global alpha makes the window completely invisible + // (due to a bug?), but screen_read_window() will work again. + + errno = 0; + int val = 200; // anything less than 255 + result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_GLOBAL_ALPHA, &val); + if (result != 0) { + qWarning() << "WindowGrabber: unable to set global alpha:" << strerror(errno); + return; + } + + errno = 0; + val = 1; + result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_VISIBLE, &val); + if (result != 0) { + qWarning() << "WindowGrabber: unable to make window visible:" << strerror(errno); + return; + } +#endif + + result = screen_create_context(&m_screenContext, SCREEN_APPLICATION_CONTEXT); + if (result != 0) { + qWarning() << "WindowGrabber: cannot create screen context:" << strerror(errno); + return; + } else { + m_screenContextInitialized = true; + } + + result = screen_create_pixmap(&m_screenPixmap, m_screenContext); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot create pixmap:" << strerror(errno); + return; + } else { + m_screenPixmapInitialized = true; + } + + const int usage = SCREEN_USAGE_READ | SCREEN_USAGE_NATIVE; + result = screen_set_pixmap_property_iv(m_screenPixmap, SCREEN_PROPERTY_USAGE, &usage); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot set pixmap usage:" << strerror(errno); + return; + } + + const int format = SCREEN_FORMAT_RGBA8888; + result = screen_set_pixmap_property_iv(m_screenPixmap, SCREEN_PROPERTY_FORMAT, &format); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot set pixmap format:" << strerror(errno); + return; + } + + int size[2] = { 0, 0 }; + + result = screen_get_window_property_iv(m_window, SCREEN_PROPERTY_SOURCE_SIZE, size); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot get window size:" << strerror(errno); + return; + } + + m_screenBufferWidth = size[0]; + m_screenBufferHeight = size[1]; + + updateFrameSize(); + + m_timer.start(); + + m_active = true; +} + +void WindowGrabber::updateFrameSize() +{ + int size[2] = { m_screenBufferWidth, m_screenBufferHeight }; + + int result = screen_set_pixmap_property_iv(m_screenPixmap, SCREEN_PROPERTY_BUFFER_SIZE, size); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot set pixmap size:" << strerror(errno); + return; + } + + result = screen_create_pixmap_buffer(m_screenPixmap); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot create pixmap buffer:" << strerror(errno); + return; + } + + result = screen_get_pixmap_property_pv(m_screenPixmap, SCREEN_PROPERTY_RENDER_BUFFERS, (void**)&m_screenPixmapBuffer); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot get pixmap buffer:" << strerror(errno); + return; + } else { + m_screenPixmapBufferInitialized = true; + } + + result = screen_get_buffer_property_pv(m_screenPixmapBuffer, SCREEN_PROPERTY_POINTER, (void**)&m_screenBuffer); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot get pixmap buffer pointer:" << strerror(errno); + return; + } + + result = screen_get_buffer_property_iv(m_screenPixmapBuffer, SCREEN_PROPERTY_STRIDE, &m_screenBufferStride); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot get pixmap buffer stride:" << strerror(errno); + return; + } +} + +void WindowGrabber::stop() +{ + if (!m_active) + return; + + cleanup(); + + m_timer.stop(); + + m_active = false; +} + +void WindowGrabber::pause() +{ + m_timer.stop(); +} + +void WindowGrabber::resume() +{ + if (!m_active) + return; + + m_timer.start(); +} + +bool WindowGrabber::handleScreenEvent(screen_event_t screen_event) +{ + + int eventType; + if (screen_get_event_property_iv(screen_event, SCREEN_PROPERTY_TYPE, &eventType) != 0) { + qWarning() << "WindowGrabber: Failed to query screen event type"; + return false; + } + + if (eventType != SCREEN_EVENT_CREATE) + return false; + + screen_window_t window = 0; + if (screen_get_event_property_pv(screen_event, SCREEN_PROPERTY_WINDOW, (void**)&window) != 0) { + qWarning() << "WindowGrabber: Failed to query window property"; + return false; + } + + const int maxIdStrLength = 128; + char idString[maxIdStrLength]; + if (screen_get_window_property_cv(window, SCREEN_PROPERTY_ID_STRING, maxIdStrLength, idString) != 0) { + qWarning() << "WindowGrabber: Failed to query window ID string"; + return false; + } + + if (m_windowId == idString) { + m_window = window; + start(); + } + + return false; +} + +bool WindowGrabber::nativeEventFilter(const QByteArray &eventType, void *message, long*) +{ +#ifdef Q_OS_BLACKBERRY + Q_UNUSED(eventType) + bps_event_t * const event = static_cast<bps_event_t *>(message); + + if (event && bps_event_get_domain(event) == screen_get_domain()) { + const screen_event_t screen_event = screen_event_get_event(event); + return handleScreenEvent(screen_event); + } +#else + if (eventType == "screen_event_t") { + const screen_event_t event = static_cast<screen_event_t>(message); + return handleScreenEvent(event); + } +#endif + + return false; +} + +QByteArray WindowGrabber::windowGroupId() const +{ + QWindow *window = QGuiApplication::allWindows().isEmpty() ? 0 : QGuiApplication::allWindows().first(); + if (!window) + return QByteArray(); + + QPlatformNativeInterface * const nativeInterface = QGuiApplication::platformNativeInterface(); + if (!nativeInterface) { + qWarning() << "WindowGrabber: Unable to get platform native interface"; + return QByteArray(); + } + + const char * const groupIdData = static_cast<const char *>( + nativeInterface->nativeResourceForWindow("windowGroup", window)); + if (!groupIdData) { + qWarning() << "WindowGrabber: Unable to find window group for window" << window; + return QByteArray(); + } + + return QByteArray(groupIdData); +} + +void WindowGrabber::grab() +{ + int size[2] = { 0, 0 }; + + int result = screen_get_window_property_iv(m_window, SCREEN_PROPERTY_SOURCE_SIZE, size); + if (result != 0) { + cleanup(); + qWarning() << "WindowGrabber: cannot get window size:" << strerror(errno); + return; + } + + if (m_screenBufferWidth != size[0] || m_screenBufferHeight != size[1]) { + // The source viewport size changed, so we have to adapt our buffers + + if (m_screenPixmapBufferInitialized) { + screen_destroy_pixmap_buffer(m_screenPixmap); + m_screenPixmapBufferInitialized = false; + } + + m_screenBufferWidth = size[0]; + m_screenBufferHeight = size[1]; + + updateFrameSize(); + } + + const int rect[] = { 0, 0, m_screenBufferWidth, m_screenBufferHeight }; + result = screen_read_window(m_window, m_screenPixmapBuffer, 1, rect, 0); + if (result != 0) + return; + + const QImage frame((unsigned char*)m_screenBuffer, m_screenBufferWidth, m_screenBufferHeight, + m_screenBufferStride, QImage::Format_ARGB32); + + emit frameGrabbed(frame); +} + +void WindowGrabber::cleanup() +{ + if (m_screenPixmapBufferInitialized) { + screen_destroy_buffer(m_screenPixmapBuffer); + m_screenPixmapBufferInitialized = false; + } + + if (m_screenPixmapInitialized) { + screen_destroy_pixmap(m_screenPixmap); + m_screenPixmapInitialized = false; + } + + if (m_screenContextInitialized) { + screen_destroy_context(m_screenContext); + m_screenContextInitialized = false; + } +} + +QT_END_NAMESPACE diff --git a/src/plugins/qnx/common/windowgrabber.h b/src/plugins/qnx/common/windowgrabber.h new file mode 100644 index 000000000..7ec4202a2 --- /dev/null +++ b/src/plugins/qnx/common/windowgrabber.h @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Research In Motion +** Contact: http://www.qt-project.org/legal +** +** 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 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 WINDOWGRABBER_H +#define WINDOWGRABBER_H + +#include <QAbstractNativeEventFilter> +#include <QObject> +#include <QTimer> + +#include <screen/screen.h> + +QT_BEGIN_NAMESPACE + +class WindowGrabber : public QObject, public QAbstractNativeEventFilter +{ + Q_OBJECT + +public: + explicit WindowGrabber(QObject *parent = 0); + ~WindowGrabber(); + + void setFrameRate(int frameRate); + + void setWindowId(const QByteArray &windowId); + + void start(); + void stop(); + + void pause(); + void resume(); + + bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) Q_DECL_OVERRIDE; + + bool handleScreenEvent(screen_event_t event); + + QByteArray windowGroupId() const; + +signals: + void frameGrabbed(const QImage &frame); + +private slots: + void grab(); + +private: + void cleanup(); + void updateFrameSize(); + + QTimer m_timer; + + QByteArray m_windowId; + + screen_window_t m_window; + screen_context_t m_screenContext; + screen_pixmap_t m_screenPixmap; + screen_buffer_t m_screenPixmapBuffer; + + char* m_screenBuffer; + + int m_screenBufferWidth; + int m_screenBufferHeight; + int m_screenBufferStride; + + bool m_active : 1; + bool m_screenContextInitialized : 1; + bool m_screenPixmapInitialized : 1; + bool m_screenPixmapBufferInitialized : 1; +}; + +QT_END_NAMESPACE + +#endif |