The code is the same of MR !170 (master) but test cases are slightly different due to rounding.
* Support for images with transparency
* Precise colorspace conversion using QT color spaces
* Set the correct resolution
* Set useful metadata
* Creates 16-bits images
* Speed improvements
Backport of MR !167:
- fix buffer overflow with corrupted images without image data
- fix unable to read very small images (e.g. 1x1 px)
- new test cases added
- detect incomplete files by checking the end of streams as written in the specs
- 1-bit writer: checks where is black and use NOT operator only if needed
- Fix images with witdh == 65536(*)
- Checks result of disk writes and reads on all formats
(*) PCX formats support images with with of 65536 but only if the header field bytesPerLine is valid (no overflow). This means that the width 65536 is supported on 1bpp images only.
The previous version of the plugins wrote an image with width of 65536px in the wrong way and it was unable to read it (wrong image returned). I verified that Photoshop and Gimp weren't able to read the image either.
(cherry picked from commit d57ff91f8b)
- Fix wrong RGB channel order if image format is other than (A)RGB32
- Write right resolution
- Set right resolution on image load
- Return false on write error
- Save images with depth greater than 24-bits
(cherry picked from commit e60dfd4968)
The VGA palette starts 769 bytes before the end of the file. There may be PADs between the end of the image and the start of the palette.
BUG: 463951
(cherry picked from commit 14742cb502)
PSD files are saved with as alpha premultiplied. The problem is that alpha refers to white instead of black so it requires transformation formulas. Then, to conver PS premultiplied to QImage premultiplied you have to use the following formula:
* V = Alpha + Vps - Max (C, M, Y, K, R, G, B, Gray, L\* components)
* V = Vps + (Alpha - Max + 1) / 2 (a\*, b\* components)
Where Max is the maximum value depending on the image depth and Vps is the valued read from the file.
This is a port of MR !143 to KF5.
- Improved performance converting CMYK files by \~10% by replacing divisions with multiplications.
- Improved performance converting LAB files by \~50% by replacing std::pow with fastPow (approximated pow function).
Plugin to read RAW camera images based on LibRAW.
- Supersedes MR !86
- Support to LibRaw 0.20 and 0.21-Beta
- Support to multi-shot images: use imageCount(), jumpToImage() to select the wanted shot
- By default generates 16-bits sRGB images using camera white balance and interpolation AHD
- Should fix CCBUG: 454208: on my Debian with KF5.96 and the pulgin installed, I see the preview of all my RAW files (ARW included) in Dolphin
News compared to V1 (MR !86)
- Fix possible stack overflow due to the huge size of LibRaw class
- Fix image allocation with Qt 6 (make use of QImageIOHandler::allocateImage())
- Support to XMP metapacket
- Support to quality option. For e.g. you can focus on quality (q = 10) or speed (q = 1)
- oss-fuzz available [here](https://github.com/mircomir/oss-fuzz/tree/raw_fuzz/projects/kimageformats)
- Fix parasite "gimp-comment" not set due to null QImage
- Support to parasite "icc-profile" using Qt 5.14+ API
- Added parasite "gimp-image-metadata" as QImage metadata "XML:org.gimp.xml"
- Added a XCF with XML metadata and icc prifile embedded in autotest folder (generated by GIMP 2.10.30)
- Tested with Qt 5.15.2 and Qt 6.2.3 under Windows and Qt 6.2.3 under macOS
Unfortunately none of them pass since it seems they can't load a png,
save it to their format with loseless quality and read it back and get
exactly the same contents than the png
The HDR QImageIOHandler plugin only supports the default image orientation (-Y +X) in .hdr files. It mixes up the width and height however, resulting in non-square images not loading.
This fix adds a check for the standard image orientation in the file and returns false (with error message) if that fails.
If it succeeds, it takes the height from the -Y component, and the width from the +X component, resulting in successful loading of the image.
Add autotest images for landscape and portrait HDR (Radiance RGBE) loader
BUGS: 433877
According to relicensecheck Brad is OK with changing LGPLv2 to LGPLv2+,
which is required to be compatible with the LGPL-2.1-or-later licensed
source files.
