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https://github.com/darktable-org/rawspeed

fast raw decoding library
https://github.com/darktable-org/rawspeed

bayer camera cmake cpp cpp17 cr2 decoding dng dslr gpr jpeg library nef openmp raw vc5 x-trans xml zlib

Last synced: 4 days ago
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fast raw decoding library

Host: GitHub
URL: https://github.com/darktable-org/rawspeed
Owner: darktable-org
License: lgpl-2.1
Created: 2016-12-23T13:27:05.000Z (about 8 years ago)
Default Branch: develop
Last Pushed: 2024-12-13T20:15:16.000Z (11 days ago)
Last Synced: 2024-12-14T01:04:57.686Z (11 days ago)
Topics: bayer, camera, cmake, cpp, cpp17, cr2, decoding, dng, dslr, gpr, jpeg, library, nef, openmp, raw, vc5, x-trans, xml, zlib
Language: C++
Homepage:
Size: 14 MB
Stars: 363
Watchers: 39
Forks: 115
Open Issues: 96
Metadata Files:
- Readme: README.rst
- License: LICENSE
- Codeowners: .github/CODEOWNERS

Awesome Lists containing this project

README

        rawspeed |github actions| OBS_ |codecov| |oss-fuzz|

.. |github actions| image:: https://github.com/darktable-org/rawspeed/actions/workflows/CI.yml/badge.svg

    :target: https://github.com/darktable-org/rawspeed/actions/workflows/CI.yml

.. _OBS: https://build.opensuse.org/project/monitor/graphics:darktable:master

.. |codecov| image:: https://codecov.io/gh/darktable-org/rawspeed/branch/develop/graph/badge.svg

    :target: https://codecov.io/gh/darktable-org/rawspeed

.. |oss-fuzz| image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/librawspeed.svg

    :target: https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:librawspeed

================================================================================

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.

- decodes images from memory, not a file stream.

- is being continuously fuzzed |oss-fuzz| as part of the `oss-fuzz`_ project.

- is currently tested on |rpu-button-cameras| unique cameras, on |rpu-button-samples| unique samples.

  **Please read** `this `_ **for more info on how to contribute samples!**

- open source under the `LGPL v2`_ license.

.. _oss-fuzz: https://github.com/google/oss-fuzz

.. |rpu-button-cameras| image:: https://raw.pixls.us/button-cameras.svg

    :target: https://raw.pixls.us/

.. |rpu-button-samples| image:: https://raw.pixls.us/button-samples.svg

    :target: https://raw.pixls.us/

.. _rpu-post: https://discuss.pixls.us/t/raw-samples-wanted/5420?u=lebedevri

.. _LGPL v2: https://choosealicense.com/licenses/lgpl-2.1/

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.

.. _pugixml: http://pugixml.org/

Getting Source Code

--------------------------------------------------------------------------------

You can get access to the latest version using `from here `_. You will need to include the “RawSpeed” and “data” folder in your own project.

CMake-based build system is provided.

Integration into LLVM LNT / Test-Suite

--------------------------------------

It is possible to natively integrate the RawSpeed into LLVM test-suite, and use

`LLVM LNT `_ to do testing, benchmarking, performance tracking.

For quick overview please see `LLVM LNT / Test-Suite Integration `_

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.

Submitting Requests and Patches

--------------------------------------------------------------------------------

Please go to the `github page `_ and submit your (pull)requests and issues there.

.. _rawspeed: https://github.com/darktable-org/rawspeed