本文整理汇总了C++中exifdata::const_iterator::toLong方法的典型用法代码示例。如果您正苦于以下问题：C++ const_iterator::toLong方法的具体用法？C++ const_iterator::toLong怎么用？C++ const_iterator::toLong使用的例子？那么恭喜您, 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exifdata::const_iterator的用法示例。
在下文中一共展示了const_iterator::toLong方法的6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: pixelHeight
int MrwImage::pixelHeight() const
{
ExifData::const_iterator imageHeight = exifData_.findKey(Exiv2::ExifKey("Exif.Image.ImageLength"));
if (imageHeight != exifData_.end() && imageHeight->count() > 0) {
return imageHeight->toLong();
}
return 0;
}示例2:
int Cr2Image::pixelHeight() const
{
ExifData::const_iterator imageHeight = exifData_.findKey(Exiv2::ExifKey("Exif.Photo.PixelYDimension"));
if (imageHeight != exifData_.end() && imageHeight->count() > 0) {
return imageHeight->toLong();
}
return 0;
}示例3: pixelWidth
int MrwImage::pixelWidth() const
{
ExifData::const_iterator imageWidth = exifData_.findKey(Exiv2::ExifKey("Exif.Image.ImageWidth"));
if (imageWidth != exifData_.end() && imageWidth->count() > 0) {
return imageWidth->toLong();
}
return 0;
}示例4:
int Rw2Image::pixelHeight() const
{
ExifData::const_iterator imageHeight =
exifData_.findKey(Exiv2::ExifKey("Exif.PanasonicRaw.SensorHeight"));
if (imageHeight != exifData_.end() && imageHeight->count() > 0) {
return imageHeight->toLong();
}
return 0;
}示例5: QImage
QImage Exiv2Lib::getPreview()
{
PreviewManager loader(*mImageFile);
PreviewPropertiesList list = loader.getPreviewProperties();
if (list.empty())
{
qDebug() << "Image contains no thumbnail";
return QImage();
}
PreviewProperties selected;
// Take the last image in the list.
// For Canon raw pictures, the 2nd preview has no white balance applied.
// see http://lclevy.free.fr/cr2/
// section 2.6 IFD #2
selected = list.back();
// FIXME: crash hapened here when reading the QImage.
// not quite sure what caused it
// load the thumbnail
PreviewImage thumbnail = loader.getPreviewImage(selected);
const unsigned char* tmp = thumbnail.pData();
size_t size = thumbnail.size();
QImage thumb;
thumb.loadFromData(tmp, size);
// Read the EXIF orientation flag and rotate the image accordingly.
ExifData& data = mImageFile->exifData();
ExifData::const_iterator pos;
pos = data.findKey(ExifKey("Exif.Image.Orientation"));
// TODO: should flip/rotate after resize
if (pos != data.end())
{
qDebug() << "rotation" << pos->toLong();
QTransform rotate;
switch (pos->toLong())
{
case 1: // no rotation needed
break;
case 2: // flip over y
thumb = thumb.mirrored(true, false);
break;
case 3: // rotate 180 (or flip x flip y)
thumb = thumb.mirrored(true, true);
break;
case 4: // flip over x
thumb = thumb.mirrored(false, true);
break;
case 5: // rotate 90 CW & flip over y
rotate.rotate(90);
rotate.rotate(180, Qt::YAxis);
thumb = thumb.transformed(rotate);
break;
case 6: // rotate 90 CW
rotate.rotate(90);
thumb = thumb.transformed(rotate);
break;
case 7: // rotate 90 CCW flip over y
rotate.rotate(-90);
rotate.rotate(180, Qt::YAxis);
thumb = thumb.transformed(rotate);
break;
case 8: // rotate 90 CCW
rotate.rotate(-90);
thumb = thumb.transformed(rotate);
break;
}
}
return thumb;
}示例6: if
gboolean
exiv2_load_meta_interface(const gchar *service, RAWFILE *rawfile, guint offset, RSMetadata *meta)
{
try {
Image::AutoPtr img = ImageFactory::open((byte*)raw_get_map(rawfile), raw_get_filesize(rawfile));
img->readMetadata();
ExifData &exifData = img->exifData();
#if EXIV2_TEST_VERSION(0,17,0)
/* We perfer XMP data, so copy it to EXIF */
XmpData &xmpData = img->xmpData();
if (!xmpData.empty())
copyXmpToExif(xmpData, exifData);
#endif
/* Parse Exif Data */
if (!exifData.empty())
{
ExifData::const_iterator i;
i = exifData.findKey(ExifKey("Exif.Image.Make"));
if (i != exifData.end())
set_metadata_maker(i->toString(), meta);
i = exifData.findKey(ExifKey("Exif.Image.Model"));
if (i != exifData.end())
meta->model_ascii = g_strdup(i->toString().c_str());
#if EXIV2_TEST_VERSION(0,19,0)
i = orientation(exifData);
if (i != exifData.end())
{
std::auto_ptr<Exiv2::Value> val = i->getValue();
if (val->count())
{
switch (val->toLong())
{
case 6: meta->orientation = 90;
break;
case 8: meta->orientation = 270;
break;
}
}
}
#endif
i = exifData.findKey(ExifKey("Exif.Image.DateTimeOriginal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Image.DateTime"));
if (i != exifData.end())
{
meta->time_ascii = g_strdup(i->toString().c_str());
meta->timestamp = rs_exiftime_to_unixtime(meta->time_ascii);
}
i = exifData.findKey(ExifKey("Exif.Image.ExposureTime"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ExposureTime"));
if (i != exifData.end())
meta->shutterspeed = 1.0 / i->getValue()->toFloat();
else
{
i = exifData.findKey(ExifKey("Exif.Image.ShutterSpeedValue"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ShutterSpeedValue"));
if (i != exifData.end())
meta->shutterspeed = 1.0 / i->toFloat();
}
i = exifData.findKey(ExifKey("Exif.Image.FNumber"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.FNumber"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Image.ApertureValue"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ApertureValue"));
if (i != exifData.end())
meta->aperture = i->toFloat();
i = exifData.findKey(ExifKey("Exif.Image.FocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.FocalLength"));
if (i != exifData.end())
meta->focallength = i->toFloat()-0.01;
#if EXIV2_TEST_VERSION(0,19,0)
i = isoSpeed(exifData);
if (i != exifData.end())
meta->iso = i->toLong();
/* Text based Lens Identifier */
i = lensName(exifData);
if (i != exifData.end())
{
TypeId type = i->typeId();
if (type == unsignedShort || type == unsignedLong || type == signedShort || type == signedLong || type == unsignedByte || type == signedByte)
meta->lens_id = i->toLong();
else if (type == asciiString || type == string)
meta->fixed_lens_identifier = g_strdup(i->toString().c_str());
}
#endif
//.........这里部分代码省略.........