/*  This file is part of the KDE project.+
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+
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    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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+
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    This library is free software: you can redistribute it and/or modify+
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    it under the terms of the GNU Lesser General Public License as published by+
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    the Free Software Foundation, either version 2.1 or 3 of the License.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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    GNU Lesser General Public License for more details.+
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+
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    You should have received a copy of the GNU Lesser General Public License+
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    along with this library.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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+
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#import <QTKit/QTMovie.h>+
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+
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#include "quicktimemetadata.h"+
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#include "quicktimevideoplayer.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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namespace Phonon+
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{+
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namespace QT7+
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{+
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+
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QuickTimeMetaData::QuickTimeMetaData()+
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{+
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    m_videoPlayer = 0;+
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    m_movieChanged = false;+
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}+
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+
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QuickTimeMetaData::~QuickTimeMetaData()+
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{+
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}+
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+
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void QuickTimeMetaData::setVideo(QuickTimeVideoPlayer *videoPlayer)+
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{+
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    m_videoPlayer = videoPlayer;+
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    m_movieChanged = true;+
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    m_metaData.clear();+
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}+
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+
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#ifdef QUICKTIME_C_API_AVAILABLE+
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+
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QString QuickTimeMetaData::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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+
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QString QuickTimeMetaData::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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+
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OSStatus QuickTimeMetaData::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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    BACKEND_ASSERT3(err == noErr, "Could not read meta data value size", NORMAL_ERROR, err)+
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+
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    *value = malloc(propSize);+
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+
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	err = QTMetaDataGetItemProperty(metaDataRef, item, propClass, id, propSize, *value, size);+
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    BACKEND_ASSERT3(err == noErr, "Could not read meta data value", NORMAL_ERROR, err)+
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+
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    if (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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	return err;+
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}+
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+
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UInt32 QuickTimeMetaData::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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    BACKEND_ASSERT3(err == noErr, "Could not read meta data type", NORMAL_ERROR, 0)+
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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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+
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QString QuickTimeMetaData::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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    BACKEND_ASSERT3(err == noErr, "Could not read meta data item", NORMAL_ERROR, QString())+
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    BACKEND_ASSERT3(value != 0, "Could not read meta data item", NORMAL_ERROR, QString())+
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+
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    QString string;+
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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 = PhononCFString::toQString(CFStringCreateWithBytes(0, (UInt8*)value, size, kCFStringEncodingUTF8, false));+
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        break;+
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    case kQTMetaDataTypeUTF16BE:+
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        string = PhononCFString::toQString(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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+
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    if (value)+
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	    free(value);+
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    return string;+
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}+
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+
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void QuickTimeMetaData::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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+
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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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+
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#endif // QUICKTIME_C_API_AVAILABLE+
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+
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void QuickTimeMetaData::readMetaData()+
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{+
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	if (!m_videoPlayer)+
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        return;+
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    QMultiMap<QString, QString> metaMap;+
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    +
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#ifdef QUICKTIME_C_API_AVAILABLE+
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	QTMetaDataRef metaDataRef;        +
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	OSStatus err = QTCopyMovieMetaData([m_videoPlayer->qtMovie() quickTimeMovie], &metaDataRef);+
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    BACKEND_ASSERT2(err == noErr, "Could not read QuickTime meta data", NORMAL_ERROR)+
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+
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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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#else+
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	NSString *name = [m_videoPlayer->qtMovie() 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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+
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    m_metaData.insert(QLatin1String("ARTIST"), metaMap.value(QLatin1String("ART")));+
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    m_metaData.insert(QLatin1String("ALBUM"), metaMap.value(QLatin1String("alb")));+
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    m_metaData.insert(QLatin1String("TITLE"), metaMap.value(QLatin1String("nam")));+
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    m_metaData.insert(QLatin1String("DATE"), metaMap.value(QLatin1String("day")));+
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    m_metaData.insert(QLatin1String("GENRE"), metaMap.value(QLatin1String("gnre")));+
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    m_metaData.insert(QLatin1String("TRACKNUMBER"), metaMap.value(QLatin1String("trk")));+
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    m_metaData.insert(QLatin1String("DESCRIPTION"), metaMap.value(QLatin1String("des")));+
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}+
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+
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QMultiMap<QString, QString> QuickTimeMetaData::metaData()+
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{+
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    if (m_videoPlayer && m_videoPlayer->hasMovie() && m_movieChanged)+
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        readMetaData();+
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    return m_metaData;+
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}+
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+
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}}+
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+
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QT_END_NAMESPACE+
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