Details
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Bug
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Resolution: Done
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P2: Important
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1.1.2
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None
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Nokia N950 with 1.2011.34-2_PR_RM680 firmware.
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a1ba3f34f54362c8d0b092d0bb71dd17b3a8d0d4 066917942ce1e04d58941dd1d7c6c9a20cc5bf5a
Description
Camera QML element from QtMobility package leads to application crash when application was sent to background. In the following test case:
import QtQuick 1.0
import QtMultimediaKit 1.1
import com.nokia.meego 1.0
Window {
id: mainWindow
Rectangle {
id: backgroundRectangle
anchors.fill: parent
color: "black"
Camera {
id: camera
anchors.centerIn: parent
width: 480
height: 360
captureResolution: "480x360"
}
Button {
id: startButton
anchors.bottom: parent.bottom
anchors.left: parent.left
width: 128
text: "Start"
onClicked: {
camera.start();
}
}
Button {
id: stopButton
anchors.bottom: parent.bottom
anchors.right: parent.right
width: 128
text: "Stop"
onClicked: {
camera.stop();
}
}
}
}
the following behaviour is observed:
1. When I start this app, camera preview video appears on the screen. If I swipe application to background without pressing "Stop" button, I have application crash with the following lines in application output:
Using the meego graphics system Successfully resolved MeeGo graphics system: /usr/lib/qt4/plugins/graphicssystems/libqmeegographicssystem.so Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage MeegoGraphics: found EGL_NOK_image_shared MeegoGraphics: found EGL_KHR_lock_surface2 MeegoGraphics: found EGL_KHR_fence_sync hijackWindow() context created for QmlApplicationViewer(0xaebe7ad4) 1 Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage QGLWindowSurface: Using plain widget as window surface QGLWindowSurface(0x299948) hijackWindow() context created for QWidget(0x4d100) 2 QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss libomap3camd 1.114 libomap3camd 1.114 libomap3camd 1.114 Meego graphics system destroyed Illegal instruction
2. If I press "Stop" button first and then swipe application to background, it doesn't crash. However, if I then push it to foreground and press "Start" button, it crashes immediately like this:
Using the meego graphics system Successfully resolved MeeGo graphics system: /usr/lib/qt4/plugins/graphicssystems/libqmeegographicssystem.so Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage MeegoGraphics: found EGL_NOK_image_shared MeegoGraphics: found EGL_KHR_lock_surface2 MeegoGraphics: found EGL_KHR_fence_sync hijackWindow() context created for QmlApplicationViewer(0xaed90ad4) 1 Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage QGLWindowSurface: Using plain widget as window surface QGLWindowSurface(0x299768) hijackWindow() context created for QWidget(0x4d100) 2 QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss libomap3camd 1.114 libomap3camd 1.114 libomap3camd 1.114 Meego graphics system destroyed Using the meego graphics system Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage hijackWindow() context created for QmlApplicationViewer(0xaed90ad4) 1 Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage QGLWindowSurface: Using plain widget as window surface QGLWindowSurface(0x5e4408) hijackWindow() context created for QWidget(0x4d100) 2 QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss Found SGX/MBX driver, enabling FullClearOnEveryFrame Found v1.4 driver, enabling brokenTexSubImage Segmentation fault