recipes-qt/qt5/qtmultimedia/0001-metadata-image-support-with-the-data-URL-scheme-for-.patch

   1 From ed61f1d932c5c6d38458fcd2e1d5d154383f017e Mon Sep 17 00:00:00 2001
   2 From: Tasuku Suzuki <tasuku.suzuki@qt.io>
   3 Date: Mon, 12 Dec 2016 16:32:47 +0900
   4 Subject: [PATCH] metadata image support with the "data" URL scheme for QtQuick
   5
   6 add posterImage, coverArtImage and thumbnailImage to metadata
   7
   8 Change-Id: I10b9bae10c219ffa41506d6e6b345020790217a6
   9 ---
  10  .../multimedia/qdeclarativemediametadata_p.h       | 33 ++++++++++++++++++++++
  11  1 file changed, 33 insertions(+)
  12
  13 diff --git a/src/imports/multimedia/qdeclarativemediametadata_p.h b/src/imports/multimedia/qdeclarativemediametadata_p.h
  14 index ede7f87..6a6a815 100644
  15 --- a/src/imports/multimedia/qdeclarativemediametadata_p.h
  16 +++ b/src/imports/multimedia/qdeclarativemediametadata_p.h
  17 @@ -51,6 +51,9 @@
  18  // We mean it.
  19  //
  20
  21 +#include <QtCore/QBuffer>
  22 +#include <QtGui/QImage>
  23 +#include <QtGui/QImageWriter>
  24  #include <QtQml/qqml.h>
  25  #include <QtMultimedia/qmediametadata.h>
  26  #include <QtMultimedia/qmediaservice.h>
  27 @@ -153,6 +156,9 @@ class QDeclarativeMediaMetaData : public QObject
  28      Q_PROPERTY(QVariant gpsProcessingMethod READ gpsProcessingMethod WRITE setGPSProcessingMethod NOTIFY metaDataChanged)
  29      Q_PROPERTY(QVariant gpsAreaInformation READ gpsAreaInformation WRITE setGPSAreaInformation NOTIFY metaDataChanged)
  30
  31 +    Q_PROPERTY(QVariant posterImage READ posterImage NOTIFY metaDataChanged)
  32 +    Q_PROPERTY(QVariant coverArtImage READ coverArtImage NOTIFY metaDataChanged)
  33 +    Q_PROPERTY(QVariant thumbnailImage READ thumbnailImage NOTIFY metaDataChanged)
  34  public:
  35      QDeclarativeMediaMetaData(QMediaObject *player, QObject *parent = 0)
  36          : QObject(parent)
  37 @@ -425,6 +431,16 @@ QT_WARNING_POP
  38      void setGPSAreaInformation(const QVariant &information) {
  39          setMetaData(QMediaMetaData::GPSAreaInformation, information); }
  40
  41 +    QVariant posterImage() const {
  42 +        return convertImageToUrl(m_mediaObject->metaData(QMediaMetaData::PosterImage));
  43 +    }
  44 +    QVariant coverArtImage() const {
  45 +        return convertImageToUrl(m_mediaObject->metaData(QMediaMetaData::CoverArtImage));
  46 +    }
  47 +    QVariant thumbnailImage() const {
  48 +        return convertImageToUrl(m_mediaObject->metaData(QMediaMetaData::ThumbnailImage));
  49 +    }
  50 +
  51  Q_SIGNALS:
  52      void metaDataChanged();
  53
  54 @@ -440,6 +456,23 @@ private:
  55              m_writerControl->setMetaData(key, value);
  56      }
  57
  58 +    QUrl convertImageToUrl(const QVariant &variant) const
  59 +    {
  60 +        if (variant.type() != QVariant::Image)
  61 +            return QUrl();
  62 +
  63 +        QImage image = variant.value<QImage>();
  64 +        QByteArray data;
  65 +        QBuffer buffer(&data);
  66 +        buffer.open(QBuffer::WriteOnly);
  67 +        QImageWriter png(&buffer, "png");
  68 +        if (!png.write(image)) {
  69 +            return QUrl();
  70 +        }
  71 +        buffer.close();
  72 +        return QUrl(QStringLiteral("data:image/png;base64,") + data.toBase64());
  73 +    }
  74 +
  75      QMediaObject *m_mediaObject;
  76      QMetaDataWriterControl *m_writerControl;
  77      bool m_requestedWriterControl;
  78 --
  79 2.7.4
  80