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  • Deb Mukherjee's avatar
    Framework changes in nzc to allow more flexibility · fe9b5143
    Deb Mukherjee authored 
    The patch adds the flexibility to use standard EOB based coding
on smaller block sizes and nzc based coding on larger blocksizes.
The tx-sizes that use nzc based coding and those that use EOB based
coding are controlled by a function get_nzc_used().
By default, this function uses nzc based coding for 16x16 and 32x32
transform blocks, which seem to bridge the performance gap
substantially.

All sets are now lower by 0.5% to 0.7%, as opposed to ~1.8% before.

Change-Id: I06abed3df57b52d241ea1f51b0d571c71e38fd0b
    fe9b5143
portingqmlapp.qdoc 3.91 KiB
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/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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/*!
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\page portingqmlapp.html
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\title Porting QML Applications to Qt 5 Example
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\brief Provides step-by-step instructions to port a QML application to Qt 5.
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The new version of Qt Quick in Qt 5 brings in some changes to the way QML
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applications are developed. For the complete list of changes that affect
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existing QML applications, refer to \l{Porting QML Applications to Qt 5}.
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This topic will walk through the porting process to make the \c{flickr} Qt 4
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QML demo work on Qt 5. If you have the SDK based on Qt 4.8 installed, you can
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find this demo application under
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\c{<install_dir_root>/Examples/4.x/declarative/demos/}.
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Follow these step-by-step instructions to port the \e{flickr} Qt 4 QML
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application work to Qt 5:
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\list 1
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 \li Open the \e{flickr} project using Qt Creator.
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 \li Edit all the \c{.qml} files and replace the \c{import QtQuick 1.0} statements
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     with \c{import QtQuick 2.0}.
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 \li Add the additional \c{import QtQuick.XmlListModel 2.0} statement to
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     \c{qml/common/RssModel.qml}.
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     \note \l{Qt Quick XmlListModel QML Types}{XmlListModel} is part of a
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     submodule under \l{QtQuick} and it must be imported explicitly in order
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     to use it.
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 \li Make the following changes to
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     \c{qmlapplicationviewer/qmlapplicationviewer.h}:
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  \list
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   \li Replace the \c{#include <QtDeclarative/QDeclarativeView>} with
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       \c{#include <QQuickView>}.
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   \li Replace \c{QDeclarativeView} with \c{QQuickView} in the class
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       declaration for \c{QmlApplicationViewer}.
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   \li Replace the parameter for \c{QmlApplicationViewer} constructor from
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       \c{QWidget} to \c{QWindow}.
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  \endlist
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 \li Make the following changes to
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     \c{qmlapplicationviewer/qmlapplicationviewer.cpp}:
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  \list
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   \li Replace all the \c{QtCore} and \c{QtDeclarative} include statements with
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       these:
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    \code
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      #include <QCoreApplication>
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#include <QDir> #include <QFileInfo> #include <QQmlComponent> #include <QQmlEngine> #include <QQmlContext> #include <QDebug> \endcode \li Replace all instances of \c{QWidget} with \c{QWindow}, and \c{QDeclarativeView} with \c{QQuickView}. \li Remove the code between \c{#if defined(Q_OS_SYMBIAN)} and \c{#endif} macros as Symbian platform is not supported in Qt 5. \li Remove the code between \c{#if QT_VERSION < 0x040702} and \c{#else}, and \c{#endif // QT_VERSION < 0x040702} macros towards the end. \endlist \li Save changes to the project and run the application. \endlist Once you see the application running, check whether it behaves as expected. Here is a snapshot of the application running on Ubuntu v12.04: \image flickr_application.png \section1 Related Topics \l{Porting QML Applications to Qt 5} */