QString KNMusicLibraryImageManager::insertHashImage(const QImage &image)
{
//Calculate the meta data of the image(MD4 of image content).
QByteArray hashResult=
QCryptographicHash::hash(QByteArray((char *)image.bits(),
image.byteCount()),
QCryptographicHash::Md4);
//Get the image key of the image.
QString imageHashKey;
//Add hash result data to image hash key.
for(int i=0; i<hashResult.size(); ++i)
{
//Get the text string of the current number.
QString currentByteText=QString::number((quint8)hashResult.at(i), 16);
//Check out the data of image hash key.
imageHashKey.append(hashResult.at(i)<16?"0"+currentByteText:
currentByteText);
}
//Check whether the hash is already exists in image list.
if(m_hashAlbumArt!=nullptr && !m_hashAlbumArt->contains(imageHashKey))
{
//If this image is first time exist in the hash list, save the image
//first.
m_hashAlbumArt->insert(imageHashKey,
QVariant(QPixmap::fromImage(image)));
//Ask to save the image.
emit requireSaveImage(imageHashKey);
}
return imageHashKey;
}
void KNLibHashPixmapList::onActionHashComplete()
{
if(m_buffer->identifyData()==
m_analysisQueue.first().index->data(m_identifyDataRole).toString())
{
QString currentKey=m_buffer->hash();
m_needToSaveImage=!m_list.contains(currentKey);
if(m_needToSaveImage)
{
m_list[currentKey]=m_analysisQueue.first().pixmap;
}
UpdateQueueItem updateItem;
updateItem.index=m_analysisQueue.first().index;
updateItem.key=currentKey;
m_updateQueue.append(updateItem);
emit requireUpdatePixmap();
m_analysisQueue.removeFirst();
if(m_needToSaveImage)
{
emit requireSaveImage();
}
else
{
onActionSaveComplete();
}
return;
}
m_analysisQueue.removeFirst();
onActionSaveComplete();
}
