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Diffstat (limited to 'src/plugins/blackberry/mediaplayer/bbmetadata.cpp')
| -rw-r--r-- | src/plugins/blackberry/mediaplayer/bbmetadata.cpp | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/plugins/blackberry/mediaplayer/bbmetadata.cpp b/src/plugins/blackberry/mediaplayer/bbmetadata.cpp new file mode 100644 index 000000000..680833e85 --- /dev/null +++ b/src/plugins/blackberry/mediaplayer/bbmetadata.cpp @@ -0,0 +1,269 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Research In Motion +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "bbmetadata.h" + +#include <QtCore/qdebug.h> +#include <QtCore/qfile.h> +#include <QtCore/qstringlist.h> + +QT_BEGIN_NAMESPACE + +BbMetaData::BbMetaData() +{ + clear(); +} + +static const char * titleKey = "md_title_name"; +static const char * artistKey = "md_title_artist"; +static const char * commentKey = "md_title_comment"; +static const char * genreKey = "md_title_genre"; +static const char * yearKey = "md_title_year"; +static const char * durationKey = "md_title_duration"; +static const char * bitRateKey = "md_title_bitrate"; +static const char * sampleKey = "md_title_samplerate"; +static const char * albumKey = "md_title_album"; +static const char * trackKey = "md_title_track"; +static const char * widthKey = "md_video_width"; +static const char * heightKey = "md_video_height"; +static const char * mediaTypeKey = "md_title_mediatype"; +static const char * pixelWidthKey = "md_video_pixel_height"; +static const char * pixelHeightKey = "md_video_pixel_width"; +static const char * seekableKey = "md_title_seekable"; + +static const int mediaTypeAudioFlag = 4; +static const int mediaTypeVideoFlag = 2; + +bool BbMetaData::parse(const QString &contextName) +{ + clear(); + QString fileName = + QString("/pps/services/multimedia/renderer/context/%1/metadata").arg(contextName); + + // In newer OS versions, the filename is "metadata0", not metadata, so try both. + if (!QFile::exists(fileName)) + fileName += '0'; + + QFile metaDataFile(fileName); + if (!metaDataFile.open(QFile::ReadOnly)) { + qWarning() << "Unable to open media metadata file" << fileName << ":" + << metaDataFile.errorString(); + return false; + } + + const QString separator("::"); + QTextStream stream(&metaDataFile); + Q_FOREVER { + const QString line = stream.readLine(); + if (line.isNull()) + break; + + const int separatorPos = line.indexOf(separator); + if (separatorPos != -1) { + const QString key = line.left(separatorPos); + const QString value = line.mid(separatorPos + separator.length()); + + if (key == durationKey) + m_duration = value.toLongLong(); + else if (key == widthKey) + m_width = value.toInt(); + else if (key == heightKey) + m_height = value.toInt(); + else if (key == mediaTypeKey) + m_mediaType = value.toInt(); + else if (key == pixelWidthKey) + m_pixelWidth = value.toFloat(); + else if (key == pixelHeightKey) + m_pixelHeight = value.toFloat(); + else if (key == titleKey) + m_title = value; + else if (key == seekableKey) + m_seekable = !(value == QLatin1String("0")); + else if (key == artistKey) + m_artist = value; + else if (key == commentKey) + m_comment = value; + else if (key == genreKey) + m_genre = value; + else if (key == yearKey) + m_year = value.toInt(); + else if (key == bitRateKey) + m_audioBitRate = value.toInt(); + else if (key == sampleKey) + m_sampleRate = value.toInt(); + else if (key == albumKey) + m_album = value; + else if (key == trackKey) + m_track = value.toInt(); + } + } + + return true; +} + +void BbMetaData::clear() +{ + m_duration = 0; + m_height = 0; + m_width = 0; + m_mediaType = -1; + m_pixelWidth = 1; + m_pixelHeight = 1; + m_seekable = true; + m_title.clear(); + m_artist.clear(); + m_comment.clear(); + m_genre.clear(); + m_year = 0; + m_audioBitRate = 0; + m_sampleRate = 0; + m_album.clear(); + m_track = 0; +} + +qlonglong BbMetaData::duration() const +{ + return m_duration; +} + +// Handling of pixel aspect ratio +// +// If the pixel aspect ratio is different from 1:1, it means the video needs to be stretched in +// order to look natural. +// For example, if the pixel width is 2, and the pixel height is 1, it means a video of 300x200 +// pixels needs to be displayed as 600x200 to look correct. +// In order to support this the easiest way, we simply pretend that the actual size of the video +// is 600x200, which will cause the video to be displayed in an aspect ratio of 3:1 instead of 3:2, +// and therefore look correct. + +int BbMetaData::height() const +{ + return m_height * m_pixelHeight; +} + +int BbMetaData::width() const +{ + return m_width * m_pixelWidth; +} + +bool BbMetaData::hasVideo() const +{ + // By default, assume no video if we can't extract the information + if (m_mediaType == -1) + return false; + + return (m_mediaType & mediaTypeVideoFlag); +} + +bool BbMetaData::hasAudio() const +{ + // By default, assume audio only if we can't extract the information + if (m_mediaType == -1) + return true; + + return (m_mediaType & mediaTypeAudioFlag); +} + +QString BbMetaData::title() const +{ + return m_title; +} + +bool BbMetaData::isSeekable() const +{ + return m_seekable; +} + +QString BbMetaData::artist() const +{ + return m_artist; +} + +QString BbMetaData::comment() const +{ + return m_comment; +} + +QString BbMetaData::genre() const +{ + return m_genre; +} + +int BbMetaData::year() const +{ + return m_year; +} + +QString BbMetaData::mediaType() const +{ + if (hasVideo()) + return QLatin1String("video"); + else if (hasAudio()) + return QLatin1String("audio"); + else + return QString(); +} + +int BbMetaData::audioBitRate() const +{ + return m_audioBitRate; +} + +int BbMetaData::sampleRate() const +{ + return m_sampleRate; +} + +QString BbMetaData::album() const +{ + return m_album; +} + +int BbMetaData::track() const +{ + return m_track; +} + +QSize BbMetaData::resolution() const +{ + return QSize(width(), height()); +} + +QT_END_NAMESPACE |