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Diffstat (limited to 'src/multimedia/qml/qmetadatacontrolmetaobject.cpp')
| -rw-r--r-- | src/multimedia/qml/qmetadatacontrolmetaobject.cpp | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/src/multimedia/qml/qmetadatacontrolmetaobject.cpp b/src/multimedia/qml/qmetadatacontrolmetaobject.cpp new file mode 100644 index 0000000..47b6382 --- /dev/null +++ b/src/multimedia/qml/qmetadatacontrolmetaobject.cpp @@ -0,0 +1,362 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtMultimedia module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtMultimedia/private/qmetadatacontrolmetaobject_p.h> +#include <QtMultimedia/qmetadatacontrol.h> + + +QT_BEGIN_NAMESPACE + +// copied from qmetaobject.cpp +// do not touch without touching the moc as well +enum PropertyFlags { + Invalid = 0x00000000, + Readable = 0x00000001, + Writable = 0x00000002, + Resettable = 0x00000004, + EnumOrFlag = 0x00000008, + StdCppSet = 0x00000100, +// Override = 0x00000200, + Designable = 0x00001000, + ResolveDesignable = 0x00002000, + Scriptable = 0x00004000, + ResolveScriptable = 0x00008000, + Stored = 0x00010000, + ResolveStored = 0x00020000, + Editable = 0x00040000, + ResolveEditable = 0x00080000, + User = 0x00100000, + ResolveUser = 0x00200000, + Notify = 0x00400000, + Dynamic = 0x00800000 +}; + +enum MethodFlags { + AccessPrivate = 0x00, + AccessProtected = 0x01, + AccessPublic = 0x02, + AccessMask = 0x03, //mask + + MethodMethod = 0x00, + MethodSignal = 0x04, + MethodSlot = 0x08, + MethodConstructor = 0x0c, + MethodTypeMask = 0x0c, + + MethodCompatibility = 0x10, + MethodCloned = 0x20, + MethodScriptable = 0x40 +}; + +struct QMetaObjectPrivate +{ + int revision; + int className; + int classInfoCount, classInfoData; + int methodCount, methodData; + int propertyCount, propertyData; + int enumeratorCount, enumeratorData; + int constructorCount, constructorData; + int flags; +}; + +static inline const QMetaObjectPrivate *priv(const uint* m_data) +{ return reinterpret_cast<const QMetaObjectPrivate*>(m_data); } +// end of copied lines from qmetaobject.cpp + +namespace +{ + struct MetaDataKey + { + QtMultimedia::MetaData key; + const char *name; + }; + + const MetaDataKey qt_metaDataKeys[] = + { + { QtMultimedia::Title, "title" }, + { QtMultimedia::SubTitle, "subTitle" }, + { QtMultimedia::Author, "author" }, + { QtMultimedia::Comment, "comment" }, + { QtMultimedia::Description, "description" }, + { QtMultimedia::Category, "category" }, + { QtMultimedia::Genre, "genre" }, + { QtMultimedia::Year, "year" }, + { QtMultimedia::Date, "date" }, + { QtMultimedia::UserRating, "userRating" }, + { QtMultimedia::Keywords, "keywords" }, + { QtMultimedia::Language, "language" }, + { QtMultimedia::Publisher, "publisher" }, + { QtMultimedia::Copyright, "copyright" }, + { QtMultimedia::ParentalRating, "parentalRating" }, + { QtMultimedia::RatingOrganisation, "ratingOrganisation" }, + + // Media + { QtMultimedia::Size, "size" }, + { QtMultimedia::MediaType, "mediaType" }, +// { QtMultimedia::Duration, "duration" }, + + // Audio + { QtMultimedia::AudioBitRate, "audioBitRate" }, + { QtMultimedia::AudioCodec, "audioCodec" }, + { QtMultimedia::AverageLevel, "averageLevel" }, + { QtMultimedia::ChannelCount, "channelCount" }, + { QtMultimedia::PeakValue, "peakValue" }, + { QtMultimedia::SampleRate, "sampleRate" }, + + // Music + { QtMultimedia::AlbumTitle, "albumTitle" }, + { QtMultimedia::AlbumArtist, "albumArtist" }, + { QtMultimedia::ContributingArtist, "contributingArtist" }, + { QtMultimedia::Composer, "composer" }, + { QtMultimedia::Conductor, "conductor" }, + { QtMultimedia::Lyrics, "lyrics" }, + { QtMultimedia::Mood, "mood" }, + { QtMultimedia::TrackNumber, "trackNumber" }, + { QtMultimedia::TrackCount, "trackCount" }, + + { QtMultimedia::CoverArtUrlSmall, "coverArtUrlSmall" }, + { QtMultimedia::CoverArtUrlLarge, "coverArtUrlLarge" }, + + // Image/Video + { QtMultimedia::Resolution, "resolution" }, + { QtMultimedia::PixelAspectRatio, "pixelAspectRatio" }, + + // Video + { QtMultimedia::VideoFrameRate, "videoFrameRate" }, + { QtMultimedia::VideoBitRate, "videoBitRate" }, + { QtMultimedia::VideoCodec, "videoCodec" }, + + { QtMultimedia::PosterUrl, "posterUrl" }, + + // Movie + { QtMultimedia::ChapterNumber, "chapterNumber" }, + { QtMultimedia::Director, "director" }, + { QtMultimedia::LeadPerformer, "leadPerformer" }, + { QtMultimedia::Writer, "writer" }, + + // Photos + { QtMultimedia::CameraManufacturer, "cameraManufacturer" }, + { QtMultimedia::CameraModel, "cameraModel" }, + { QtMultimedia::Event, "event" }, + { QtMultimedia::Subject, "subject" }, + { QtMultimedia::Orientation, "orientation" }, + { QtMultimedia::ExposureTime, "exposureTime" }, + { QtMultimedia::FNumber, "fNumber" }, + { QtMultimedia::ExposureProgram, "exposureProgram" }, + { QtMultimedia::ISOSpeedRatings, "isoSpeedRatings" }, + { QtMultimedia::ExposureBiasValue, "exposureBiasValue" }, + { QtMultimedia::DateTimeOriginal, "dateTimeOriginal" }, + { QtMultimedia::DateTimeDigitized, "dateTimeDigitized" }, + { QtMultimedia::SubjectDistance, "subjectDistance" }, + { QtMultimedia::MeteringMode, "meteringMode" }, + { QtMultimedia::LightSource, "lightSource" }, + { QtMultimedia::Flash, "flash" }, + { QtMultimedia::FocalLength, "focalLength" }, + { QtMultimedia::ExposureMode, "exposureMode" }, + { QtMultimedia::WhiteBalance, "whiteBalance" }, + { QtMultimedia::DigitalZoomRatio, "digitalZoomRatio" }, + { QtMultimedia::FocalLengthIn35mmFilm, "focalLengthIn35mmFilm" }, + { QtMultimedia::SceneCaptureType, "sceneCaptureType" }, + { QtMultimedia::GainControl, "gainControl" }, + { QtMultimedia::Contrast, "contrast" }, + { QtMultimedia::Saturation, "saturation" }, + { QtMultimedia::Sharpness, "sharpness" }, + { QtMultimedia::DeviceSettingDescription, "deviceSettingDescription" } + }; + + class QMetaDataControlObject : public QObject + { + public: + inline QObjectData *data() { return d_ptr.data(); } + }; +} + +QMetaDataControlMetaObject::QMetaDataControlMetaObject(QMetaDataControl *control, QObject *object) + : m_control(control) + , m_object(object) + , m_string(0) + , m_data(0) + , m_propertyOffset(0) + , m_signalOffset(0) +{ + const QMetaObject *superClass = m_object->metaObject(); + + const int propertyCount = sizeof(qt_metaDataKeys) / sizeof(MetaDataKey); + const int dataSize = sizeof(uint) + * (13 // QMetaObjectPrivate members. + + 5 // 5 members per signal. + + 4 * propertyCount // 3 members per property + 1 notify signal per property. + + 1); // Terminating value. + + m_data = reinterpret_cast<uint *>(qMalloc(dataSize)); + + QMetaObjectPrivate *pMeta = reinterpret_cast<QMetaObjectPrivate *>(m_data); + + pMeta->revision = 3; + pMeta->className = 0; + pMeta->classInfoCount = 0; + pMeta->classInfoData = 0; + pMeta->methodCount = 1; + pMeta->methodData = 13; + pMeta->propertyCount = propertyCount; + pMeta->propertyData = 18; + pMeta->enumeratorCount = 0; + pMeta->enumeratorData = 0; + pMeta->constructorCount = 0; + pMeta->constructorData = 0; + pMeta->flags = 0x01; // Dynamic meta object flag. + + const int classNameSize = qstrlen(superClass->className()) + 1; + + int stringIndex = classNameSize + 1; + + // __metaDataChanged() signal. + static const char *changeSignal = "__metaDataChanged()"; + const int changeSignalSize = qstrlen(changeSignal) + 1; + + m_data[13] = stringIndex; // Signature. + m_data[14] = classNameSize; // Parameters. + m_data[15] = classNameSize; // Type. + m_data[16] = classNameSize; // Tag. + m_data[17] = MethodSignal | AccessProtected; // Flags. + + stringIndex += changeSignalSize; + + const char *qvariantName = "QVariant"; + const int qvariantSize = qstrlen(qvariantName) + 1; + const int qvariantIndex = stringIndex; + + stringIndex += qvariantSize; + + // Properties. + for (int i = 0; i < propertyCount; ++i) { + m_data[18 + 3 * i] = stringIndex; // Name. + m_data[19 + 3 * i] = qvariantIndex; // Type. + m_data[20 + 3 * i] + = Readable | Writable | Notify | Dynamic | (0xffffffff << 24); // Flags. + m_data[18 + propertyCount * 3 + i] = 0; // Notify signal. + + stringIndex += qstrlen(qt_metaDataKeys[i].name) + 1; + } + + // Terminating value. + m_data[18 + propertyCount * 4] = 0; + + // Build string. + m_string = reinterpret_cast<char *>(qMalloc(stringIndex + 1)); + + // Class name. + qMemCopy(m_string, superClass->className(), classNameSize); + + stringIndex = classNameSize; + + // Null m_string. + m_string[stringIndex] = '\0'; + stringIndex += 1; + + // __metaDataChanged() signal. + qMemCopy(m_string + stringIndex, changeSignal, changeSignalSize); + stringIndex += changeSignalSize; + + qMemCopy(m_string + stringIndex, qvariantName, qvariantSize); + stringIndex += qvariantSize; + + // Properties. + for (int i = 0; i < propertyCount; ++i) { + const int propertyNameSize = qstrlen(qt_metaDataKeys[i].name) + 1; + + qMemCopy(m_string + stringIndex, qt_metaDataKeys[i].name, propertyNameSize); + stringIndex += propertyNameSize; + } + + // Terminating character. + m_string[stringIndex] = '\0'; + + d.superdata = superClass; + d.stringdata = m_string; + d.data = m_data; + d.extradata = 0; + + static_cast<QMetaDataControlObject *>(m_object)->data()->metaObject = this; + + m_propertyOffset = propertyOffset(); + m_signalOffset = methodOffset(); +} + +QMetaDataControlMetaObject::~QMetaDataControlMetaObject() +{ + static_cast<QMetaDataControlObject *>(m_object)->data()->metaObject = 0; + + qFree(m_data); + qFree(m_string); +} + +int QMetaDataControlMetaObject::metaCall(QMetaObject::Call c, int id, void **a) +{ + if (c == QMetaObject::ReadProperty && id >= m_propertyOffset) { + int propId = id - m_propertyOffset; + + *reinterpret_cast<QVariant *>(a[0]) = m_control->metaData(qt_metaDataKeys[propId].key); + + return -1; + } else if (c == QMetaObject::WriteProperty && id >= m_propertyOffset) { + int propId = id - m_propertyOffset; + + m_control->setMetaData(qt_metaDataKeys[propId].key, *reinterpret_cast<QVariant *>(a[0])); + + return -1; + } else { + return m_object->qt_metacall(c, id, a); + } +} + +int QMetaDataControlMetaObject::createProperty(const char *, const char *) +{ + return -1; +} + +void QMetaDataControlMetaObject::metaDataChanged() +{ + activate(m_object, m_signalOffset, 0); +} + +QT_END_NAMESPACE |