#RawSpeed Developer Information
##What is RawSpeed?
RawSpeed…
- is capable of decoding various images in RAW file format.
- is intended to provide the fastest decoding speed possible.
- supports the most common DSLR and similar class brands.
- supplies unmodified RAW data, optionally scaled to 16 bit, or normalized to 0->1 float point data.
- supplies CFA layout for all known cameras.
- provides automatic black level calculation for cameras having such information.
- optionally crops off “junk” areas of images, containing no valid image information.
- can add support for new cameras by adding definitions to an xml file.
is extensively crash-tested on broken files.- decodes images from memory, not a file stream. You can use a memory mapped file, but it is rarely faster.
- is currently tested on
unique cameras, on
unique samples. Please contribute samples!
- open source under the LGPL v2 license.
RawSpeed does NOT…
- read metadata information, beside whitebalance information.
- do any color correction or whitebalance correction.
- de-mosaic the image.
- supply a viewable image or thumbnail.
- crop the image to the same sizes as manufactures, but supplies biggest possible images.
So RawSpeed is not intended to be a complete RAW file display library, but only act as the first stage decoding, delivering the RAW data to your application.
##Version 2, new cameras and features
- Support for Sigma foveon cameras.
- Support for Fuji cameras.
- Support old Minolta, Panasonic, Sony cameras (contributed by Pedro Côrte-Real)
- Arbitrary CFA definition sizes.
- Use pugixml for xml parsing to avoid depending on libxml.
##Getting Source Code
You can get access to the lastest version using from here. You will need to include the “RawSpeed” and “data” folder in your own project.
CMake-based build system is provided.
##Background of RawSpeed
The main objectives were to make a very fast loader that worked for 75% of the cameras out there, and was able to decode a RAW file at close to the optimal speed. The last 25% of the cameras out there could be serviced by a more generic loader, or convert their images to DNG – which as a sidenote usually compresses better than your camera.
RawSpeed is not at the moment a separate library, so you have to include it in your project directly.
##Please see RawSpeed/README.md for usage instructions.
##Submitting Requests and Patches
Please go to the github page and submit your (pull)requests and issues there.