diff -r e4ebb16b39ea -r 603d3f8b6302 plugins/multimedia/qt7/mediaplayer/qt7playermetadata.mm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/multimedia/qt7/mediaplayer/qt7playermetadata.mm	Mon Oct 04 01:37:06 2010 +0300
@@ -0,0 +1,260 @@
+/****************************************************************************
+**
+** 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 Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 "qt7backend.h"
+#include "qt7playermetadata.h"
+#include "qt7playersession.h"
+#include <QtCore/qvarlengtharray.h>
+
+#import <QTKit/QTMovie.h>
+
+#ifdef QUICKTIME_C_API_AVAILABLE
+    #include <QuickTime/QuickTime.h>
+    #undef check // avoid name clash;
+#endif
+
+QT_USE_NAMESPACE
+
+QT7PlayerMetaDataControl::QT7PlayerMetaDataControl(QT7PlayerSession *session, QObject *parent)
+    :QMetaDataReaderControl(parent), m_session(session)
+{
+}
+
+QT7PlayerMetaDataControl::~QT7PlayerMetaDataControl()
+{
+}
+
+bool QT7PlayerMetaDataControl::isMetaDataAvailable() const
+{
+    return !m_tags.isEmpty();
+}
+
+bool QT7PlayerMetaDataControl::isWritable() const
+{
+    return false;
+}
+
+QVariant QT7PlayerMetaDataControl::metaData(QtMultimediaKit::MetaData key) const
+{
+    return m_tags.value(key);
+}
+
+QList<QtMultimediaKit::MetaData> QT7PlayerMetaDataControl::availableMetaData() const
+{
+    return m_tags.keys();
+}
+
+QVariant QT7PlayerMetaDataControl::extendedMetaData(const QString &key) const
+{
+    Q_UNUSED(key);
+    return QVariant();
+}
+
+QStringList QT7PlayerMetaDataControl::availableExtendedMetaData() const
+{
+    return QStringList();
+}
+
+#ifdef QUICKTIME_C_API_AVAILABLE
+
+static QString stripCopyRightSymbol(const QString &key)
+{
+    return key.right(key.length()-1);
+}
+
+static QString convertQuickTimeKeyToUserKey(const QString &key)
+{
+    if (key == QLatin1String("com.apple.quicktime.displayname"))
+        return QLatin1String("nam");
+    else if (key == QLatin1String("com.apple.quicktime.album"))
+        return QLatin1String("alb");
+    else if (key == QLatin1String("com.apple.quicktime.artist"))
+        return QLatin1String("ART");
+    else
+        return QLatin1String("???");
+}
+
+static OSStatus readMetaValue(QTMetaDataRef metaDataRef, QTMetaDataItem item, QTPropertyClass propClass,
+                              QTPropertyID id, QTPropertyValuePtr *value, ByteCount *size)
+{
+    QTPropertyValueType type;
+    ByteCount propSize;
+    UInt32 propFlags;
+    OSStatus err = QTMetaDataGetItemPropertyInfo(metaDataRef, item, propClass, id, &type, &propSize, &propFlags);
+
+    if (err == noErr) {
+        *value = malloc(propSize);
+        if (*value != 0) {
+            err = QTMetaDataGetItemProperty(metaDataRef, item, propClass, id, propSize, *value, size);
+
+            if (err == noErr && (type == 'code' || type == 'itsk' || type == 'itlk')) {
+                // convert from native endian to big endian
+                OSTypePtr pType = (OSTypePtr)*value;
+                *pType = EndianU32_NtoB(*pType);
+            }
+        }
+        else
+            return -1;
+    }
+
+    return err;
+}
+
+static UInt32 getMetaType(QTMetaDataRef metaDataRef, QTMetaDataItem item)
+{
+    QTPropertyValuePtr value = 0;
+    ByteCount ignore = 0;
+    OSStatus err = readMetaValue(
+            metaDataRef, item, kPropertyClass_MetaDataItem, kQTMetaDataItemPropertyID_DataType, &value, &ignore);
+
+    if (err == noErr) {
+        UInt32 type = *((UInt32 *) value);
+        if (value)
+            free(value);
+        return type;
+    }
+
+    return 0;
+}
+
+static QString cFStringToQString(CFStringRef str)
+{
+    if(!str)
+        return QString();
+    CFIndex length = CFStringGetLength(str);
+    const UniChar *chars = CFStringGetCharactersPtr(str);
+    if (chars)
+        return QString(reinterpret_cast<const QChar *>(chars), length);
+
+    QVarLengthArray<UniChar> buffer(length);
+    CFStringGetCharacters(str, CFRangeMake(0, length), buffer.data());
+    return QString(reinterpret_cast<const QChar *>(buffer.constData()), length);
+}
+
+
+static QString getMetaValue(QTMetaDataRef metaDataRef, QTMetaDataItem item, SInt32 id)
+{
+    QTPropertyValuePtr value = 0;
+    ByteCount size = 0;
+    OSStatus err = readMetaValue(metaDataRef, item, kPropertyClass_MetaDataItem, id, &value, &size);
+    QString string;
+
+    if (err == noErr) {
+        UInt32 dataType = getMetaType(metaDataRef, item);
+        switch (dataType){
+        case kQTMetaDataTypeUTF8:
+        case kQTMetaDataTypeMacEncodedText:
+            string = cFStringToQString(CFStringCreateWithBytes(0, (UInt8*)value, size, kCFStringEncodingUTF8, false));
+            break;
+        case kQTMetaDataTypeUTF16BE:
+            string = cFStringToQString(CFStringCreateWithBytes(0, (UInt8*)value, size, kCFStringEncodingUTF16BE, false));
+            break;
+        default:
+            break;
+        }
+
+        if (value)
+            free(value);
+    }
+
+    return string;
+}
+
+
+static void readFormattedData(QTMetaDataRef metaDataRef, OSType format, QMultiMap<QString, QString> &result)
+{
+    QTMetaDataItem item = kQTMetaDataItemUninitialized;
+    OSStatus err = QTMetaDataGetNextItem(metaDataRef, format, item, kQTMetaDataKeyFormatWildcard, 0, 0, &item);
+    while (err == noErr){
+        QString key = getMetaValue(metaDataRef, item, kQTMetaDataItemPropertyID_Key);
+        if (format == kQTMetaDataStorageFormatQuickTime)
+            key = convertQuickTimeKeyToUserKey(key);
+        else
+            key = stripCopyRightSymbol(key);
+
+        if (!result.contains(key)){
+            QString val = getMetaValue(metaDataRef, item, kQTMetaDataItemPropertyID_Value);
+            result.insert(key, val);
+        }
+        err = QTMetaDataGetNextItem(metaDataRef, format, item, kQTMetaDataKeyFormatWildcard, 0, 0, &item);
+    }
+}
+#endif
+
+
+void QT7PlayerMetaDataControl::updateTags()
+{
+    bool wasEmpty = m_tags.isEmpty();
+    m_tags.clear();
+
+    QTMovie *movie = (QTMovie*)m_session->movie();
+
+    if (movie) {
+        QMultiMap<QString, QString> metaMap;
+
+#ifdef QUICKTIME_C_API_AVAILABLE
+        QTMetaDataRef metaDataRef;
+        OSStatus err = QTCopyMovieMetaData([movie quickTimeMovie], &metaDataRef);
+        if (err == noErr) {
+            readFormattedData(metaDataRef, kQTMetaDataStorageFormatUserData, metaMap);
+            readFormattedData(metaDataRef, kQTMetaDataStorageFormatQuickTime, metaMap);
+            readFormattedData(metaDataRef, kQTMetaDataStorageFormatiTunes, metaMap);
+        }
+#else
+        AutoReleasePool pool;
+        NSString *name = [movie attributeForKey:@"QTMovieDisplayNameAttribute"];
+        metaMap.insert(QLatin1String("nam"), QString::fromUtf8([name UTF8String]));
+#endif // QUICKTIME_C_API_AVAILABLE
+
+        m_tags.insert(QtMultimediaKit::AlbumArtist, metaMap.value(QLatin1String("ART")));
+        m_tags.insert(QtMultimediaKit::AlbumTitle, metaMap.value(QLatin1String("alb")));
+        m_tags.insert(QtMultimediaKit::Title, metaMap.value(QLatin1String("nam")));
+        m_tags.insert(QtMultimediaKit::Date, metaMap.value(QLatin1String("day")));
+        m_tags.insert(QtMultimediaKit::Genre, metaMap.value(QLatin1String("gnre")));
+        m_tags.insert(QtMultimediaKit::TrackNumber, metaMap.value(QLatin1String("trk")));
+        m_tags.insert(QtMultimediaKit::Description, metaMap.value(QLatin1String("des")));
+    }
+
+    if (!wasEmpty || !m_tags.isEmpty())
+        emit metaDataChanged();
+}
+
+#include "moc_qt7playermetadata.cpp"