diff options
Diffstat (limited to 'src/plugins/qnx/common/windowgrabber.cpp')
| -rw-r--r-- | src/plugins/qnx/common/windowgrabber.cpp | 419 |
1 files changed, 0 insertions, 419 deletions
diff --git a/src/plugins/qnx/common/windowgrabber.cpp b/src/plugins/qnx/common/windowgrabber.cpp deleted file mode 100644 index 65037fcce..000000000 --- a/src/plugins/qnx/common/windowgrabber.cpp +++ /dev/null @@ -1,419 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 Research In Motion -** 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "windowgrabber.h" - -#include <QAbstractEventDispatcher> -#include <QDebug> -#include <QGuiApplication> -#include <QImage> -#include <QThread> -#include <qpa/qplatformnativeinterface.h> - -#include <QOpenGLContext> -#include <QOpenGLFunctions> - -#include <errno.h> - -QT_BEGIN_NAMESPACE - -static PFNEGLCREATEIMAGEKHRPROC s_eglCreateImageKHR; -static PFNEGLDESTROYIMAGEKHRPROC s_eglDestroyImageKHR; - -WindowGrabber::WindowGrabber(QObject *parent) - : QObject(parent), - m_windowParent(nullptr), - m_screenContext(0), - m_active(false), - m_currentFrame(0), - m_eglImageSupported(false), - m_eglImageCheck(false) -{ - // grab the window frame with 60 frames per second - m_timer.setInterval(1000/60); - - connect(&m_timer, SIGNAL(timeout()), SLOT(triggerUpdate())); - - QCoreApplication::eventDispatcher()->installNativeEventFilter(this); - - for ( int i = 0; i < 2; ++i ) - m_images[i] = 0; - - // Use of EGL images can be disabled by setting QQNX_MM_DISABLE_EGLIMAGE_SUPPORT to something - // non-zero. This is probably useful only to test that this path still works since it results - // in a high CPU load. - if (!s_eglCreateImageKHR && qgetenv("QQNX_MM_DISABLE_EGLIMAGE_SUPPORT").toInt() == 0) { - s_eglCreateImageKHR = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR")); - s_eglDestroyImageKHR = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR")); - } - - QPlatformNativeInterface *const nativeInterface = QGuiApplication::platformNativeInterface(); - if (nativeInterface) { - m_screenContext = static_cast<screen_context_t>( - nativeInterface->nativeResourceForIntegration("screenContext")); - } - - // Create a parent window for the window whose content will be grabbed. Since the - // window is only a buffer conduit, the characteristics of the parent window are - // irrelevant. The contents of the window can be grabbed so long as the window - // joins the parent window's group and the parent window is in this process. - // Using the window that displays this content isn't possible because there's no - // way to reliably retrieve it from this code or any calling code. - screen_create_window(&m_windowParent, m_screenContext); - screen_create_window_group(m_windowParent, nullptr); -} - -WindowGrabber::~WindowGrabber() -{ - screen_destroy_window(m_windowParent); - QCoreApplication::eventDispatcher()->removeNativeEventFilter(this); - cleanup(); -} - -void WindowGrabber::setFrameRate(int frameRate) -{ - m_timer.setInterval(1000/frameRate); -} - - -void WindowGrabber::setWindowId(const QByteArray &windowId) -{ - m_windowId = windowId; -} - -void WindowGrabber::start() -{ - if (m_active) - return; - - if (!m_screenContext) - screen_get_window_property_pv(m_window, SCREEN_PROPERTY_CONTEXT, reinterpret_cast<void**>(&m_screenContext)); - - m_timer.start(); - - m_active = true; -} - -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; - } - - // Grab windows that have a non-empty ID string and a matching window id to grab - if (idString[0] != '\0' && m_windowId == idString) { - m_window = window; - start(); - } - - return false; -} - -bool WindowGrabber::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *) -{ - if (eventType == "screen_event_t") { - const screen_event_t event = static_cast<screen_event_t>(message); - return handleScreenEvent(event); - } - - return false; -} - -QByteArray WindowGrabber::windowGroupId() const -{ - char groupName[256]; - memset(groupName, 0, sizeof(groupName)); - screen_get_window_property_cv(m_windowParent, - SCREEN_PROPERTY_GROUP, - sizeof(groupName) - 1, - groupName); - return QByteArray(groupName); -} - -bool WindowGrabber::eglImageSupported() -{ - return m_eglImageSupported; -} - -void WindowGrabber::checkForEglImageExtension() -{ - QOpenGLContext *m_context = QOpenGLContext::currentContext(); - if (!m_context) //Should not happen, because we are called from the render thread - return; - - QByteArray eglExtensions = QByteArray(eglQueryString(eglGetDisplay(EGL_DEFAULT_DISPLAY), - EGL_EXTENSIONS)); - m_eglImageSupported = m_context->hasExtension(QByteArrayLiteral("GL_OES_EGL_image")) - && eglExtensions.contains(QByteArrayLiteral("EGL_KHR_image")) - && s_eglCreateImageKHR && s_eglDestroyImageKHR; - - if (strstr(reinterpret_cast<const char*>(glGetString(GL_VENDOR)), "VMware")) - m_eglImageSupported = false; - - m_eglImageCheck = true; -} - -void WindowGrabber::triggerUpdate() -{ - if (!m_eglImageCheck) // We did not check for egl images yet - return; - - 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_size.width() != size[0] || m_size.height() != size[1]) - m_size = QSize(size[0], size[1]); - - emit updateScene(m_size); -} - -bool WindowGrabber::selectBuffer() -{ - // If we're using egl images we need to double buffer since the gpu may still be using the last - // video frame. If we're not, it doesn't matter since the data is immediately copied. - if (eglImageSupported()) - m_currentFrame = (m_currentFrame + 1) % 2; - - if (!m_images[m_currentFrame]) { - m_images[m_currentFrame] = new WindowGrabberImage(); - if (!m_images[m_currentFrame]->initialize(m_screenContext)) { - delete m_images[m_currentFrame]; - m_images[m_currentFrame] = 0; - return false; - } - } - return true; -} - -int WindowGrabber::getNextTextureId() -{ - if (!selectBuffer()) - return 0; - return m_images[m_currentFrame]->getTexture(m_window, m_size); -} - -QImage WindowGrabber::getNextImage() -{ - if (!selectBuffer()) - return QImage(); - - return m_images[m_currentFrame]->getImage(m_window, m_size); -} - -void WindowGrabber::cleanup() -{ - for ( int i = 0; i < 2; ++i ) { - if (m_images[i]) { - m_images[i]->destroy(); - m_images[i] = 0; - } - } -} - - -WindowGrabberImage::WindowGrabberImage() - : m_pixmap(0), m_pixmapBuffer(0), m_eglImage(0), m_glTexture(0), m_bufferAddress(0), m_bufferStride(0) -{ -} - -WindowGrabberImage::~WindowGrabberImage() -{ - if (m_glTexture) - glDeleteTextures(1, &m_glTexture); - if (m_eglImage) - s_eglDestroyImageKHR(eglGetDisplay(EGL_DEFAULT_DISPLAY), m_eglImage); - if (m_pixmap) - screen_destroy_pixmap(m_pixmap); -} - -bool -WindowGrabberImage::initialize(screen_context_t screenContext) -{ - if (screen_create_pixmap(&m_pixmap, screenContext) != 0) { - qWarning() << "WindowGrabber: cannot create pixmap:" << strerror(errno); - return false; - } - const int usage = SCREEN_USAGE_WRITE | SCREEN_USAGE_READ | SCREEN_USAGE_NATIVE; - screen_set_pixmap_property_iv(m_pixmap, SCREEN_PROPERTY_USAGE, &usage); - - const int format = SCREEN_FORMAT_RGBX8888; - screen_set_pixmap_property_iv(m_pixmap, SCREEN_PROPERTY_FORMAT, &format); - - return true; -} - -void -WindowGrabberImage::destroy() -{ - // We want to delete in the thread we were created in since we need the thread that - // has called eglMakeCurrent on the right EGL context. This doesn't actually guarantee - // this but that would be hard to achieve and in practice it works. - if (QThread::currentThread() == thread()) - delete this; - else - deleteLater(); -} - -bool -WindowGrabberImage::resize(const QSize &newSize) -{ - if (m_pixmapBuffer) { - screen_destroy_pixmap_buffer(m_pixmap); - m_pixmapBuffer = 0; - m_bufferAddress = 0; - m_bufferStride = 0; - } - - int size[2] = { newSize.width(), newSize.height() }; - - screen_set_pixmap_property_iv(m_pixmap, SCREEN_PROPERTY_BUFFER_SIZE, size); - - if (screen_create_pixmap_buffer(m_pixmap) == 0) { - screen_get_pixmap_property_pv(m_pixmap, SCREEN_PROPERTY_RENDER_BUFFERS, - reinterpret_cast<void**>(&m_pixmapBuffer)); - screen_get_buffer_property_pv(m_pixmapBuffer, SCREEN_PROPERTY_POINTER, - reinterpret_cast<void**>(&m_bufferAddress)); - screen_get_buffer_property_iv(m_pixmapBuffer, SCREEN_PROPERTY_STRIDE, &m_bufferStride); - m_size = newSize; - - return true; - } else { - m_size = QSize(); - return false; - } -} - -bool -WindowGrabberImage::grab(screen_window_t window) -{ - const int rect[] = { 0, 0, m_size.width(), m_size.height() }; - return screen_read_window(window, m_pixmapBuffer, 1, rect, 0) == 0; -} - -QImage -WindowGrabberImage::getImage(screen_window_t window, const QSize &size) -{ - if (size != m_size) { - if (!resize(size)) - return QImage(); - } - if (!m_bufferAddress || !grab(window)) - return QImage(); - - return QImage(m_bufferAddress, m_size.width(), m_size.height(), m_bufferStride, QImage::Format_ARGB32); -} - -GLuint -WindowGrabberImage::getTexture(screen_window_t window, const QSize &size) -{ - if (size != m_size) { - if (!m_glTexture) - glGenTextures(1, &m_glTexture); - glBindTexture(GL_TEXTURE_2D, m_glTexture); - if (m_eglImage) { - glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, 0); - s_eglDestroyImageKHR(eglGetDisplay(EGL_DEFAULT_DISPLAY), m_eglImage); - m_eglImage = 0; - } - if (!resize(size)) - return 0; - m_eglImage = s_eglCreateImageKHR(eglGetDisplay(EGL_DEFAULT_DISPLAY), EGL_NO_CONTEXT, - EGL_NATIVE_PIXMAP_KHR, m_pixmap, 0); - glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, m_eglImage); - } - - if (!m_pixmap || !grab(window)) - return 0; - - return m_glTexture; -} - - - -QT_END_NAMESPACE |