Initial copy of QtMultimediaKit.
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Michael Goddard
260
src/plugins/qt7/mediaplayer/qt7playermetadata.mm
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260
src/plugins/qt7/mediaplayer/qt7playermetadata.mm
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qt7backend.h"
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#include "qt7playermetadata.h"
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#include "qt7playersession.h"
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#include <QtCore/qvarlengtharray.h>
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#import <QTKit/QTMovie.h>
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#ifdef QUICKTIME_C_API_AVAILABLE
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#include <QuickTime/QuickTime.h>
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#undef check // avoid name clash;
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#endif
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QT_USE_NAMESPACE
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QT7PlayerMetaDataControl::QT7PlayerMetaDataControl(QT7PlayerSession *session, QObject *parent)
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:QMetaDataReaderControl(parent), m_session(session)
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{
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}
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QT7PlayerMetaDataControl::~QT7PlayerMetaDataControl()
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{
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}
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bool QT7PlayerMetaDataControl::isMetaDataAvailable() const
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{
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return !m_tags.isEmpty();
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}
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bool QT7PlayerMetaDataControl::isWritable() const
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{
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return false;
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}
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QVariant QT7PlayerMetaDataControl::metaData(QtMultimediaKit::MetaData key) const
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{
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return m_tags.value(key);
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}
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QList<QtMultimediaKit::MetaData> QT7PlayerMetaDataControl::availableMetaData() const
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{
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return m_tags.keys();
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}
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QVariant QT7PlayerMetaDataControl::extendedMetaData(const QString &key) const
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{
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Q_UNUSED(key);
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return QVariant();
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}
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QStringList QT7PlayerMetaDataControl::availableExtendedMetaData() const
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{
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return QStringList();
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}
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#ifdef QUICKTIME_C_API_AVAILABLE
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static QString stripCopyRightSymbol(const QString &key)
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{
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return key.right(key.length()-1);
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}
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static QString convertQuickTimeKeyToUserKey(const QString &key)
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{
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if (key == QLatin1String("com.apple.quicktime.displayname"))
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return QLatin1String("nam");
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else if (key == QLatin1String("com.apple.quicktime.album"))
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return QLatin1String("alb");
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else if (key == QLatin1String("com.apple.quicktime.artist"))
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return QLatin1String("ART");
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else
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return QLatin1String("???");
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}
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static OSStatus readMetaValue(QTMetaDataRef metaDataRef, QTMetaDataItem item, QTPropertyClass propClass,
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QTPropertyID id, QTPropertyValuePtr *value, ByteCount *size)
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{
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QTPropertyValueType type;
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ByteCount propSize;
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UInt32 propFlags;
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OSStatus err = QTMetaDataGetItemPropertyInfo(metaDataRef, item, propClass, id, &type, &propSize, &propFlags);
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if (err == noErr) {
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*value = malloc(propSize);
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if (*value != 0) {
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err = QTMetaDataGetItemProperty(metaDataRef, item, propClass, id, propSize, *value, size);
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if (err == noErr && (type == 'code' || type == 'itsk' || type == 'itlk')) {
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// convert from native endian to big endian
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OSTypePtr pType = (OSTypePtr)*value;
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*pType = EndianU32_NtoB(*pType);
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}
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}
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else
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return -1;
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}
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return err;
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}
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static UInt32 getMetaType(QTMetaDataRef metaDataRef, QTMetaDataItem item)
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{
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QTPropertyValuePtr value = 0;
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ByteCount ignore = 0;
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OSStatus err = readMetaValue(
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metaDataRef, item, kPropertyClass_MetaDataItem, kQTMetaDataItemPropertyID_DataType, &value, &ignore);
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if (err == noErr) {
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UInt32 type = *((UInt32 *) value);
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if (value)
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free(value);
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return type;
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}
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return 0;
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}
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static QString cFStringToQString(CFStringRef str)
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{
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if(!str)
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return QString();
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CFIndex length = CFStringGetLength(str);
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const UniChar *chars = CFStringGetCharactersPtr(str);
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if (chars)
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return QString(reinterpret_cast<const QChar *>(chars), length);
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QVarLengthArray<UniChar> buffer(length);
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CFStringGetCharacters(str, CFRangeMake(0, length), buffer.data());
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return QString(reinterpret_cast<const QChar *>(buffer.constData()), length);
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}
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static QString getMetaValue(QTMetaDataRef metaDataRef, QTMetaDataItem item, SInt32 id)
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{
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QTPropertyValuePtr value = 0;
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ByteCount size = 0;
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OSStatus err = readMetaValue(metaDataRef, item, kPropertyClass_MetaDataItem, id, &value, &size);
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QString string;
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if (err == noErr) {
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UInt32 dataType = getMetaType(metaDataRef, item);
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switch (dataType){
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case kQTMetaDataTypeUTF8:
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case kQTMetaDataTypeMacEncodedText:
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string = cFStringToQString(CFStringCreateWithBytes(0, (UInt8*)value, size, kCFStringEncodingUTF8, false));
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break;
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case kQTMetaDataTypeUTF16BE:
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string = cFStringToQString(CFStringCreateWithBytes(0, (UInt8*)value, size, kCFStringEncodingUTF16BE, false));
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break;
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default:
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break;
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}
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if (value)
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free(value);
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}
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return string;
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}
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static void readFormattedData(QTMetaDataRef metaDataRef, OSType format, QMultiMap<QString, QString> &result)
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{
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QTMetaDataItem item = kQTMetaDataItemUninitialized;
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OSStatus err = QTMetaDataGetNextItem(metaDataRef, format, item, kQTMetaDataKeyFormatWildcard, 0, 0, &item);
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while (err == noErr){
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QString key = getMetaValue(metaDataRef, item, kQTMetaDataItemPropertyID_Key);
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if (format == kQTMetaDataStorageFormatQuickTime)
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key = convertQuickTimeKeyToUserKey(key);
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else
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key = stripCopyRightSymbol(key);
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if (!result.contains(key)){
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QString val = getMetaValue(metaDataRef, item, kQTMetaDataItemPropertyID_Value);
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result.insert(key, val);
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}
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err = QTMetaDataGetNextItem(metaDataRef, format, item, kQTMetaDataKeyFormatWildcard, 0, 0, &item);
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}
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}
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#endif
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void QT7PlayerMetaDataControl::updateTags()
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{
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bool wasEmpty = m_tags.isEmpty();
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m_tags.clear();
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QTMovie *movie = (QTMovie*)m_session->movie();
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if (movie) {
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QMultiMap<QString, QString> metaMap;
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#ifdef QUICKTIME_C_API_AVAILABLE
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QTMetaDataRef metaDataRef;
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OSStatus err = QTCopyMovieMetaData([movie quickTimeMovie], &metaDataRef);
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if (err == noErr) {
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readFormattedData(metaDataRef, kQTMetaDataStorageFormatUserData, metaMap);
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readFormattedData(metaDataRef, kQTMetaDataStorageFormatQuickTime, metaMap);
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readFormattedData(metaDataRef, kQTMetaDataStorageFormatiTunes, metaMap);
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}
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#else
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AutoReleasePool pool;
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NSString *name = [movie attributeForKey:@"QTMovieDisplayNameAttribute"];
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metaMap.insert(QLatin1String("nam"), QString::fromUtf8([name UTF8String]));
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#endif // QUICKTIME_C_API_AVAILABLE
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m_tags.insert(QtMultimediaKit::AlbumArtist, metaMap.value(QLatin1String("ART")));
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m_tags.insert(QtMultimediaKit::AlbumTitle, metaMap.value(QLatin1String("alb")));
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m_tags.insert(QtMultimediaKit::Title, metaMap.value(QLatin1String("nam")));
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m_tags.insert(QtMultimediaKit::Date, metaMap.value(QLatin1String("day")));
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m_tags.insert(QtMultimediaKit::Genre, metaMap.value(QLatin1String("gnre")));
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m_tags.insert(QtMultimediaKit::TrackNumber, metaMap.value(QLatin1String("trk")));
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m_tags.insert(QtMultimediaKit::Description, metaMap.value(QLatin1String("des")));
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}
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if (!wasEmpty || !m_tags.isEmpty())
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emit metaDataChanged();
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}
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#include "moc_qt7playermetadata.cpp"
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