metadata

Description:

metadata

metadata #























metadata is a dart library to extract exif data of the images.
Support ❤️❤️ #
Thanks for being kind and hitting the support button. Much Appreciated 🙌!!
Table of Contents #

Installing
Usage

Imports
Read image file
Read image file from Asset Folder
Extract Exif Data
Extract Exif Data with callback
Saving Exif Content into File


Upcoming Features
Donate (Be the First one)

Lets Get Started #
1. Depend on it #
Add this to your package's pubspec.yaml file:
dependencies:
metadata: any
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2. Install it #
You can install packages from the command line:
with pub:
$ pub get
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3. Import it #
Now in your Dart code, you can use:
import 'package:metadata/metadata.dart';
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Usage #
Imports #
import 'package:metadata/metadata.dart';

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Read Image File #
var file = "path_to_pre_existing_image_file/image.jpg";
var bytes = File(file).readAsBytesSync();

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Read Image from Flutter's Asset Folder #
import 'package:flutter/services.dart' show ByteData, rootBundle;

/* Your awesome code here */

ByteData data = await rootBundle.load("assets/path_to_pre_existing_image_file/image.jpg";);
var bytes = data.buffer.asUint8List(data.offsetInBytes, data.lengthInBytes);

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Extract Exif Data #
var result = MetaData.exifData(bytes);
if (result.error == null) {
var content = result.exifData; // exif data is available in contents
saveFile(image_name, content);
} else {
print('File: $image.jpg, Error: ${result.error}');
}

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Extract Exif Data with callback #
MetaData.exifData(bytes, onValue: (CallBack result) {
if (result.error == null) {
var content = result.exifData;
saveFile(image_name, content);
} else {
print('File: $image.jpg, Error: ${result.error}');
}
});

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Extract XMP Data #
var mapResult = MetaData.extractXMP(bytes);
print(mapResult.toString());
saveFile(image_name, mapResult);

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Saving exif content into File #
void saveFile(String fileName, dynamic exifContent) {
File('${path}$fileName.json').writeAsStringSync(jsonEncode(exifContent));
}

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