本文整理汇总了C++中exiv2::ExifData::eraseThumbnail方法的典型用法代码示例。如果您正苦于以下问题：C++ ExifData::eraseThumbnail方法的具体用法？C++ ExifData::eraseThumbnail怎么用？C++ ExifData::eraseThumbnail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exiv2::ExifData的用法示例。
在下文中一共展示了ExifData::eraseThumbnail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: ReadExif
bool ptImageHelper::ReadExif(const QString &AFileName,
Exiv2::ExifData &AExifData,
std::vector<uint8_t> &AExifBuffer)
{
if (AFileName.trimmed().isEmpty()) return false;
try {
if (Exiv2::ImageFactory::getType(AFileName.toLocal8Bit().data()) == Exiv2::ImageType::none)
return false;
Exiv2::Image::AutoPtr hImage = Exiv2::ImageFactory::open(AFileName.toLocal8Bit().data());
if (!hImage.get()) return false;
hImage->readMetadata();
AExifData = hImage->exifData();
if (AExifData.empty()) {
ptLogWarning(ptWarning_Argument, "No Exif data found in %s", AFileName.toLocal8Bit().data());
return false;
}
Exiv2::ExifData::iterator Pos;
size_t Size;
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::Blob Blob;
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Exiv2::DataBuf Buf(AExifData.copy());
Size = Buf.size_;
#endif
/* If buffer too big for JPEG, try deleting some stuff. */
if (Size + CExifHeader.size() > CMaxHeaderLength) {
if ((Pos = AExifData.findKey(Exiv2::ExifKey("Exif.Photo.MakerNote"))) != AExifData.end() ) {
AExifData.erase(Pos);
ptLogWarning(ptWarning_Argument, "Exif buffer too big, erasing Exif.Photo.MakerNote");
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Buf = AExifData.copy();
Size = Buf.size_;
#endif
}
}
// Erase embedded thumbnail if needed
if (Settings->GetInt("EraseExifThumbnail") ||
(Size + CExifHeader.size()) > CMaxHeaderLength ) {
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifThumb Thumb(AExifData);
Thumb.erase();
#else
AExifData.eraseThumbnail();
#endif
if (!Settings->GetInt("EraseExifThumbnail"))
ptLogWarning(ptWarning_Argument, "Exif buffer too big, erasing Thumbnail");
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Buf = AExifData.copy();
Size = Buf.size_;
#endif
}
AExifBuffer.clear();
AExifBuffer.insert(AExifBuffer.end(),
CExifHeader.begin(),
CExifHeader.end());
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
AExifBuffer.insert(AExifBuffer.end(),
Blob.begin(),
Blob.end());
#else
// old code will currently not compile
memcpy(AExifBuffer+sizeof(ExifHeader), Buf.pData_, Buf.size_);
#endif
return true;
} catch(Exiv2::Error& Error) {
// Exiv2 errors are in this context hopefully harmless
// (unsupported tags etc.)
ptLogWarning(ptWarning_Exiv2,"Exiv2 : %s\n",Error.what());
}
return false;
}