commit 20aa24312c592d0925b2ae1c55e9248cb769cee7
parent cc07ee123ba917ad1fa6a1f49c61175979f13406
Author: Christian Grothoff <christian@grothoff.org>
Date: Sat, 27 Aug 2005 04:47:27 +0000
dead
Diffstat:
1 file changed, 0 insertions(+), 109 deletions(-)
diff --git a/src/plugins/exiv2/addmoddel.cpp b/src/plugins/exiv2/addmoddel.cpp
@@ -1,109 +0,0 @@
-// ***************************************************************** -*- C++ -*-
-// addmoddel.cpp, $Rev: 560 $
-// Sample program showing how to add, modify and delete Exif metadata.
-
-#include "image.hpp"
-#include "exif.hpp"
-#include <iostream>
-#include <iomanip>
-#include <cassert>
-
-int main(int argc, char* const argv[])
-try {
- if (argc != 2) {
- std::cout << "Usage: " << argv[0] << " file\n";
- return 1;
- }
- std::string file(argv[1]);
-
- // Container for exif metadata. This is an example of creating
- // exif metadata from scratch. If you want to add, modify, delete
- // metadata that exists in an image, start with ImageFactory::open
- Exiv2::ExifData exifData;
-
- // *************************************************************************
- // Add to the Exif data
-
- // This is the quickest way to add (simple) Exif data. If a metadatum for
- // a given key already exists, its value is overwritten. Otherwise a new
- // tag is added.
- exifData["Exif.Image.Model"] = "Test 1"; // AsciiValue
- exifData["Exif.Image.SamplesPerPixel"] = uint16_t(162); // UShortValue
- exifData["Exif.Image.XResolution"] = int32_t(-2); // LongValue
- exifData["Exif.Image.YResolution"] = Exiv2::Rational(-2, 3); // RationalValue
- std::cout << "Added a few tags the quick way.\n";
-
- // Create a ASCII string value (note the use of create)
- Exiv2::Value::AutoPtr v = Exiv2::Value::create(Exiv2::asciiString);
- // Set the value to a string
- v->read("1999:12:31 23:59:59");
- // Add the value together with its key to the Exif data container
- Exiv2::ExifKey key("Exif.Photo.DateTimeOriginal");
- exifData.add(key, v.get());
- std::cout << "Added key \"" << key << "\", value \"" << *v << "\"\n";
-
- // Now create a more interesting value (without using the create method)
- Exiv2::URationalValue::AutoPtr rv(new Exiv2::URationalValue);
- // Set two rational components from a string
- rv->read("1/2 1/3");
- // Add more elements through the extended interface of rational value
- rv->value_.push_back(std::make_pair(2,3));
- rv->value_.push_back(std::make_pair(3,4));
- // Add the key and value pair to the Exif data
- key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
- exifData.add(key, rv.get());
- std::cout << "Added key \"" << key << "\", value \"" << *rv << "\"\n";
-
- // *************************************************************************
- // Modify Exif data
-
- // Since we know that the metadatum exists (or we don't mind creating a new
- // tag if it doesn't), we can simply do this:
- Exiv2::Exifdatum& tag = exifData["Exif.Photo.DateTimeOriginal"];
- std::string date = tag.toString();
- date.replace(0, 4, "2000");
- tag.setValue(date);
- std::cout << "Modified key \"" << key
- << "\", new value \"" << tag.value() << "\"\n";
-
- // Alternatively, we can use findKey()
- key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
- Exiv2::ExifData::iterator pos = exifData.findKey(key);
- if (pos == exifData.end()) throw Exiv2::Error(1, "Key not found");
- // Get a pointer to a copy of the value
- v = pos->getValue();
- // Downcast the Value pointer to its actual type
- Exiv2::URationalValue* prv = dynamic_cast<Exiv2::URationalValue*>(v.release());
- if (prv == 0) throw Exiv2::Error(1, "Downcast failed");
- rv = Exiv2::URationalValue::AutoPtr(prv);
- // Modify the value directly through the interface of URationalValue
- rv->value_[2] = std::make_pair(88,77);
- // Copy the modified value back to the metadatum
- pos->setValue(rv.get());
- std::cout << "Modified key \"" << key
- << "\", new value \"" << pos->value() << "\"\n";
-
- // *************************************************************************
- // Delete metadata from the Exif data container
-
- // Delete the metadatum at iterator position pos
- key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
- pos = exifData.findKey(key);
- if (pos == exifData.end()) throw Exiv2::Error(1, "Key not found");
- exifData.erase(pos);
- std::cout << "Deleted key \"" << key << "\"\n";
-
- // *************************************************************************
- // Finally, write the remaining Exif data to the image file
- Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);
- assert(image.get() != 0);
-
- image->setExifData(exifData);
- image->writeMetadata();
-
- return 0;
-}
-catch (Exiv2::AnyError& e) {
- std::cout << "Caught Exiv2 exception '" << e << "'\n";
- return -1;
-}
