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QNX: Remove most of the CPU overhead for video rendering

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This patch uses the GL_OES_EGL_image extension to create a OpenGL Texture handle
for a libscreen pixmap. If the extension is not available it uses the "old"
technique as fallback where the image data is copied into a QImage.

This reduces the CPU load by more than 70% and allows HD videos to be played jitter-free.

Task-number: QTBUG-37752

Change-Id: I4cad22c39390e4cf9eb5be5f0bfe446544a11b9e
Reviewed-by: Bernd Weimer <bweimer@blackberry.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
This commit is contained in:
Fabian Bumberger
2014-03-21 16:02:48 +01:00
committed by The Qt Project
parent d2b54b360e
commit 36649887e8
6 changed files with 237 additions and 64 deletions
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10
src/qtmultimediaquicktools/qdeclarativevideooutput_render.cpp
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@@ -201,6 +201,16 @@ QSGNode *QDeclarativeVideoRendererBackend::updatePaintNode(QSGNode *oldNode,
obj->event(&ev);
}
}
#if defined (Q_OS_QNX) // On QNX we need to be called back again for creating the egl images
else {
// Internal mechanism to call back the surface renderer from the QtQuick render thread
QObject *obj = m_surface->property("_q_GLThreadCallback").value<QObject*>();
if (obj) {
QEvent ev(static_cast<QEvent::Type>(QEvent::User + 1));
obj->event(&ev);
}
}
#endif
if (m_frameChanged) {
if (videoNode && videoNode->pixelFormat() != m_frame.pixelFormat()) {