anierzad / cr2-raw

Native image and meta data retrieval from Canon RAW .CR2 files.

cr2-raw

Native image and meta data retrieval from Canon RAW .CR2 files.

Usage

This is just a quick example that demonstrates retrieving the preview image from a .CR2 file.

var cr2Raw = require('cr2-raw'),
  fs = require('fs');

// Read RAW.
var raw = cr2Raw('my-image.CR2');

// Save preview image.
fs.writeFileSync('my-image.jpg', raw.previewImage());

API

cr2raw

Static

meta

MetaDefinitions describe how to find a specific tag including the tagId, which IFD's to search for it and a parse function to use on the return value.

ImageWidth

Description

Retrieves 'Exif.Photo.PixelXDimension' from the EXIF IFD and returns it as an int.

ImageHeight

Description

Retrieves 'Exif.Photo.PixelYDimension' from the EXIF IFD and returns it as an int.

DateTaken

Description

Retrieves 'Exif.Photo.DateTimeOriginal' from the EXIF IFD and returns it as a Date.

Construction

cr2Raw(filePath)

Parameters

• filePath string - Path to .CR2 file

Description

Basic constructor used to parse a .CR2 file ready for use.

Methods

previewImage()

Description

Returns a Buffer containing the bytes which make up the preview image for the file.

thumbnailImage()

Description

Returns a Buffer containing the bytes which make up the thumbnail image for the file.

fetchMeta(metaDefinition)

Parameters

• metaDefinition object - Meta data definition (see MetaDefinitions)

Description

Retrieves and returns a piece of meta data depending on the passed MetaDefintion.

cr2-raw's Issues

Provide async methods

Currently .CR2 files are parsed synchronously. Provide async methods to avoid having to wait for the operation to complete.