本文整理汇总了C++中DMetadata::getImageOrientation方法的典型用法代码示例。如果您正苦于以下问题：C++ DMetadata::getImageOrientation方法的具体用法？C++ DMetadata::getImageOrientation怎么用？C++ DMetadata::getImageOrientation使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DMetadata的用法示例。
在下文中一共展示了DMetadata::getImageOrientation方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: exifOrientation
int LoadSaveThread::exifOrientation(const QString& filePath, const DMetadata& metadata,
bool isRaw, bool fromRawEmbeddedPreview)
{
int dbOrientation = KExiv2::ORIENTATION_UNSPECIFIED;
if (infoProvider())
{
dbOrientation = infoProvider()->orientationHint(filePath);
}
int exifOrientation = metadata.getImageOrientation();
// Raw files are already rotated properly by dcraw. Only perform auto-rotation with JPEG/PNG/TIFF file.
// We don't have a feedback from dcraw about auto-rotated RAW file during decoding.
if (isRaw && !fromRawEmbeddedPreview)
{
// Did the user apply any additional rotation over the metadata flag?
if (dbOrientation == KExiv2::ORIENTATION_UNSPECIFIED || dbOrientation == exifOrientation)
{
return KExiv2::ORIENTATION_NORMAL;
}
// Assume A is the orientation as from metadata, B is an additional operation applied by the user,
// C is the current orientation in the database.
// A*B = C and B = A_inv * C
QMatrix A = KExiv2Iface::RotationMatrix::toMatrix((KExiv2::ImageOrientation)exifOrientation);
QMatrix C = KExiv2Iface::RotationMatrix::toMatrix((KExiv2::ImageOrientation)dbOrientation);
QMatrix A_inv = A.inverted();
QMatrix B = A_inv * C;
RotationMatrix m(B.m11(), B.m12(), B.m21(), B.m22());
return m.exifOrientation();
}
if (dbOrientation != KExiv2::ORIENTATION_UNSPECIFIED)
{
return dbOrientation;
}
return exifOrientation;
}