Add missing include mocs

On float images, if not color profile is present, a linear one should be chosen. Photoshop works on 32-bit images in a linear color space.

.gitlab-ci.yml

@@ -5,7 +5,18 @@ include:
   - project: sysadmin/ci-utilities
     file:
       - /gitlab-templates/linux-qt6.yml
+      - /gitlab-templates/linux-qt6-next.yml
       - /gitlab-templates/alpine-qt6.yml
       - /gitlab-templates/android-qt6.yml
       - /gitlab-templates/freebsd-qt6.yml
       - /gitlab-templates/windows-qt6.yml
+      - /gitlab-templates/xml-lint.yml
+      - /gitlab-templates/yaml-lint.yml
+
+image_json_validate:
+  stage: validate
+  image: invent-registry.kde.org/sysadmin/ci-images/suse-qt68:latest
+  tags:
+    - Linux
+  script:
+    - find src/imageformats/ -name *.json | xargs -I file bash -c "echo file && jq -e '(.Keys | type == \"array\") and (.MimeTypes | type == \"array\") and (.MimeTypes | length) == (.Keys | length)' file"

.kde-ci.yml

@@ -1,10 +1,11 @@
 Dependencies:
-- 'on': ['Linux', 'FreeBSD', 'macOS', 'Windows', 'Android']
-  'require':
+ - 'on': ['Linux', 'FreeBSD', 'macOS', 'Windows', 'Android']
+   'require':
     'frameworks/extra-cmake-modules': '@same'
-    'frameworks/karchive' : '@same'
+    'frameworks/karchive': '@same'
 
 Options:
-  test-before-installing: True
-  require-passing-tests-on: [ 'Linux', 'FreeBSD', 'Windows' ]
-  cmake-options: "-DKIMAGEFORMATS_DDS=ON -DKIMAGEFORMATS_JXR=ON"
+ test-before-installing: True
+ require-passing-tests-on: ['Linux', 'FreeBSD', 'Windows']
+ cmake-options: "-DKIMAGEFORMATS_DDS=ON -DKIMAGEFORMATS_JXR=ON -DKIMAGEFORMATS_HEIF=ON"
+ per-test-timeout: 90

CMakeLists.txt

@@ -1,11 +1,11 @@
 cmake_minimum_required(VERSION 3.16)
 
-set(KF_VERSION "6.10.0") # handled by release scripts
-set(KF_DEP_VERSION "6.10.0") # handled by release scripts
+set(KF_VERSION "6.13.0") # handled by release scripts
+set(KF_DEP_VERSION "6.13.0") # handled by release scripts
 project(KImageFormats VERSION ${KF_VERSION})
 
 include(FeatureSummary)
-find_package(ECM 6.10.0  NO_MODULE)
+find_package(ECM 6.13.0  NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra CMake Modules." URL "https://commits.kde.org/extra-cmake-modules")
 feature_summary(WHAT REQUIRED_PACKAGES_NOT_FOUND FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
@@ -72,12 +72,19 @@ add_feature_info(LibHeif LibHeif_FOUND "required for the QImage plugin for HEIF/
 
 option(KIMAGEFORMATS_JXL "Enable plugin for JPEG XL format" ON)
 if(KIMAGEFORMATS_JXL)
-    pkg_check_modules(LibJXL IMPORTED_TARGET libjxl>=0.7.0)
-    pkg_check_modules(LibJXLThreads IMPORTED_TARGET libjxl_threads>=0.7.0)
-    pkg_check_modules(LibJXLCMS IMPORTED_TARGET libjxl_cms>=0.9.0)
+    pkg_check_modules(LibJXL IMPORTED_TARGET libjxl>=0.9.4)
+    pkg_check_modules(LibJXLThreads IMPORTED_TARGET libjxl_threads>=0.9.4)
+    pkg_check_modules(LibJXLCMS IMPORTED_TARGET libjxl_cms>=0.9.4)
 endif()
 add_feature_info(LibJXL LibJXL_FOUND "required for the QImage plugin for JPEG XL images")
 
+option(KIMAGEFORMATS_JP2 "Enable plugin for JPEG 2000 format" ON)
+if(KIMAGEFORMATS_JP2)
+    find_package(OpenJPEG CONFIG)
+endif()
+add_feature_info(OpenJPEG OpenJPEG_FOUND "required for the QImage plugin for JPEG 2000 images")
+
+
 find_package(LibRaw 0.20.2)
 set_package_properties(LibRaw PROPERTIES
     TYPE OPTIONAL
@@ -92,8 +99,8 @@ endif()
 add_feature_info(LibJXR LibJXR_FOUND "required for the QImage plugin for JPEG XR images")
 
 ecm_set_disabled_deprecation_versions(
-    QT 6.8.0
-    KF 6.8.0
+    QT 6.9.0
+    KF 6.12.0
 )
 
 add_subdirectory(src)

README.md

@@ -32,6 +32,7 @@ The following image formats have read and write support:
 - DirectDraw Surface (dds)
 - Encapsulated PostScript (eps)
 - High Efficiency Image File Format (heif)
+- JPEG 2000 (jp2, j2k, jpf)
 - JPEG XL (jxl)
 - JPEG XR (jxr)
 - OpenEXR (exr)
@@ -75,6 +76,12 @@ The DDS plugin is a fork from Qt 5.6 with bug fixes and improvements.
 
 The plugin was forked because Qt Project no longer supports its DDS plugin.
 
+### The JP2 plugin
+
+The JP2 plugin is based on the popular and wide used OpenJPEG library.
+
+The Qt project has a no longer supported JPEG 2000 plugin based on Jasper.
+
 ## License
 
 This framework is licensed under the
@@ -106,17 +113,96 @@ clamp). This is not a plugin issue.
 
 ### Metadata
 
-Metadata support is implemented in all formats that support it. In particular,
-in addition to the classic `"Description"`, `"Author"`, `"Copyright"`, etc... where 
-possible, XMP data is supported via the `"XML:com.adobe.xmp"` key.
+Metadata support is available in formats that include it via 
+`QImage::setText()` and `QImage::text()`. To ensure consistent metadata 
+functionality, the following keys have been adopted.
 
-Please note that only the most common metadata is supported.
+About the image:
+- `Altitude`: Floating-point number indicating the GPS altitude in meters 
+  above sea level (e.g. 35.4).
+- `Author`: Person who created the image.
+- `Comment`: Additional image information in human-readable form, for 
+  example a verbal description of the image.
+- `Copyright`: Copyright notice of the person or organization that claims 
+  the copyright to the image.
+- `CreationDate`: When the image was created or captured. Date and time in 
+  ISO 8601 format without milliseconds (e.g. 2024-03-23T15:30:43). This value
+  should be kept unchanged when present.
+- `Description`: A string that describes the subject of the image.
+- `Direction`: Floating-point number indicating the direction of the image
+  when it was captured in degrees (e.g. 123.3).
+- `DocumentName`: The name of the document from which this image was 
+  scanned.
+- `HostComputer`: The computer and/or operating system in use at the time 
+  of image creation.
+- `Latitude`: Floating-point number indicating the latitude in degrees 
+  north of the equator (e.g. 27.717).
+- `Longitude`: Floating-point number indicating the longitude in degrees 
+  east of Greenwich (e.g. 85.317).
+- `ModificationDate`: Last modification date and time in ISO 8601 format 
+  without milliseconds (e.g. 2024-03-23T15:30:43). This value should be 
+  updated every time the image is saved.
+- `Owner`: Name of the owner of the image.
+- `Software`: Name and version number of the software package(s) used to 
+  create the image.
+- `Title`: The title of the image.
+
+About the camera:
+- `Manufacturer`: The manufacturer of the recording equipment.
+- `Model`: The model name or model number of the recording equipment.
+- `SerialNumber`: The serial number of the recording equipment.
+
+About the lens:
+- `LensManufacturer`: The manufacturer of the interchangeable lens that was 
+  used.
+- `LensModel`: The model name or model number of the lens that was used.
+- `LensSerialNumber`: The serial number of the interchangeable lens that was 
+  used.
+
+Complex metadata (requires a parser):
+- `XML:org.gimp.xml`: XML metadata generated by GIMP and present only in XCF 
+  files.
+- `XML:com.adobe.xmp`: [Extensible Metadata Platform (XMP)](https://developer.adobe.com/xmp/docs/)
+  is the metadata standard used by Adobe applications and is supported by all 
+  common image formats. **Note that XMP metadata is read and written by 
+  plugins as is.** Since it may contain information present in other metadata 
+  (e.g. `Description`), it is the user's responsibility to ensure consistency 
+  between all metadata and XMP metadata when writing an image.
+
+Supported metadata may vary from one plugin to another. Please note that only
+the most common metadata are supported and some plugins may return keys not 
+listed here.
+
+### EXIF Metadata
+
+[EXIF (Exchangeable Image File Format)](https://en.wikipedia.org/wiki/Exif) 
+metadata is a standard for embedding information within the image file itself.
+
+Unlike the metadata described above, EXIF ​​metadata is used internally by some 
+plugins to standardize image handling. For example, the JXL plugin uses them 
+to **set/get the image resolution and metadata**. They are also needed to 
+make the image properties appear in the file details of some file managers 
+(e.g. Dolphin).
+
+When reading, EXIF meta​​data is converted into simple metadata (e.g. 
+`Description`) and inserted into the image if and only if it is not already 
+present.
+
+On writing, the image metadata is converted to EXIF ​​and saved appropriately.
+Note that, if not present in the image to be saved, the following metadata 
+are created automatically:
+
+- `Software`: Created using `applicationName` and `applicationVersion` methods
+  of [`QCoreApplication`](https://doc.qt.io/qt-6/qcoreapplication.html).
+- `CreationDate`: Set to current time and date.
+- `ModificationDate`: Set to current time and date.
 
 ### ICC profile support
 
-ICC support is fully implemented in all formats that support it. When saving, 
-some formats convert the image using color profiles according to
-specifications. In particular, HDR formats almost always convert to linear
+ICC profile support is implemented in all formats that handle them using
+[`QColorSpace`](https://doc.qt.io/qt-6/qcolorspace.html). When saving, some 
+plugins convert the image using color profiles according to format 
+specifications. In particular, HDR formats almost always convert to linear 
 RGB.
 
 ### Maximum image size
@@ -134,6 +220,7 @@ plugin ('n/a' means no limit, i.e. the limit depends on the format encoding).
 - EPS: n/a
 - HDR: n/a (large image)
 - HEIF: n/a
+- JP2: 300,000 x 300,000 pixels, in any case no larger than 2 gigapixels
 - JXL: 262,144 x 262,144 pixels, in any case no larger than 256 megapixels
 - JXR: n/a, in any case no larger than 4 GB
 - KRA: same size as Qt's PNG plugin
@@ -178,16 +265,18 @@ been used or the maximum size of the image that can be saved has been limited.
 PSD plugin loads CMYK, Lab and Multichannel images and converts them to RGB 
 without using the ICC profile.
 
-JXR, PSD and SCT plugins natively support 4-channel CMYK images when compiled 
-with Qt 6.8+.
+JP2, JXL, JXR, PSD and SCT plugins natively support 4-channel CMYK images when
+compiled with Qt 6.8+.
 
 ### The DDS plugin
 
 **This plugin can be disabled by setting `KIMAGEFORMATS_DDS` to `OFF` 
 in your cmake options.**
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `DDS_DISABLE_STRIDE_ALIGNMENT`: disable the stride aligment based on DDS pitch: it is known that some writers do not set it correctly.
+The following defines can be defined in cmake to modify the behavior of the 
+plugin:
+- `DDS_DISABLE_STRIDE_ALIGNMENT`: disable the stride aligment based on DDS 
+  pitch: it is known that some writers do not set it correctly.
 
 ### The HEIF plugin
 
@@ -201,9 +290,13 @@ will compile but will fail the tests.
 
 ### The EXR plugin
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `EXR_CONVERT_TO_SRGB`: the linear data is converted to sRGB on read to accommodate programs that do not support color profiles.
-- `EXR_DISABLE_XMP_ATTRIBUTE`: disables the stores XMP values in a non-standard attribute named "xmp". Note that Gimp reads the "xmp" attribute and Darktable writes it as well.
+The following defines can be defined in cmake to modify the behavior of the 
+plugin:
+- `EXR_CONVERT_TO_SRGB`: the linear data is converted to sRGB on read to 
+  accommodate programs that do not support color profiles.
+- `EXR_DISABLE_XMP_ATTRIBUTE`: disables the stores XMP values in a non-standard 
+  attribute named "xmp". Note that Gimp reads the "xmp" attribute and Darktable 
+  writes it as well.
 
 ### The EPS plugin
 
@@ -215,16 +308,31 @@ create a temporary PDF file which is then converted to EPS. Therefore, if
 
 ### The HDR plugin
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `HDR_HALF_QUALITY`: on read, a 16-bit float image is returned instead of a 32-bit float one.
+The following defines can be defined in cmake to modify the behavior of the 
+plugin:
+- `HDR_HALF_QUALITY`: on read, a 16-bit float image is returned instead of a 
+  32-bit float one.
+
+### The JP2 plugin
+
+**This plugin can be disabled by setting `KIMAGEFORMATS_JP2` to `OFF` 
+in your cmake options.**
+
+JP2 plugin has the following limitations due to the lack of support by OpenJPEG:
+- Metadata are not supported.
+- Image resolution is not supported.
+- To write ICC profiles you need OpenJPEG V2.5.4 or higher
 
 ### The JXL plugin
 
 **The current version of the plugin limits the image size to 256 megapixels
 according to feature level 5 of the JXL stream encoding.**
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `JXL_HDR_PRESERVATION_DISABLED`: disable floating point images (both read and write) by converting them to UINT16 images. Any HDR data is lost. Note that FP images are always disabled when compiling with libJXL less than v0.9.
+The following defines can be defined in cmake to modify the behavior of the
+plugin:
+- `JXL_HDR_PRESERVATION_DISABLED`: disable floating point images (both read 
+  and write) by converting them to UINT16 images. Any HDR data is lost. Note 
+  that FP images are always disabled when compiling with libJXL less than v0.9.
 - `JXL_DECODE_BOXES_DISABLED`: disable reading of metadata (e.g. XMP).
 
 ### The JXR plugin
@@ -232,11 +340,21 @@ The following defines can be defined in cmake to modify the behavior of the plug
 **This plugin is disabled by default. It can be enabled by settings
 `KIMAGEFORMATS_JXR` to `ON` in your cmake options.**
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `JXR_DENY_FLOAT_IMAGE`: disables the use of float images and consequently any HDR data will be lost.
-- `JXR_DISABLE_DEPTH_CONVERSION`: remove the neeeds of additional memory by disabling the conversion between different color depths (e.g. RGBA64bpp to RGBA32bpp) at the cost of reduced compatibility.
-- `JXR_DISABLE_BGRA_HACK`: Windows displays and opens JXR files correctly out of the box. Unfortunately it doesn't seem to open (P)RGBA @32bpp files as it only wants (P)BGRA32bpp files (a format not supported by Qt). Only for this format an hack is activated to guarantee total compatibility of the plugin with Windows.
-- `JXR_ENABLE_ADVANCED_METADATA`: enable metadata support (e.g. XMP). Some distributions use an incomplete JXR library that does not allow reading metadata, causing compilation errors.
+The following defines can be defined in cmake to modify the behavior of the 
+plugin:
+- `JXR_DENY_FLOAT_IMAGE`: disables the use of float images and consequently 
+  any HDR data will be lost.
+- `JXR_DISABLE_DEPTH_CONVERSION`: remove the neeeds of additional memory by 
+  disabling the conversion between different color depths (e.g. RGBA64bpp to 
+  RGBA32bpp) at the cost of reduced compatibility.
+- `JXR_DISABLE_BGRA_HACK`: Windows displays and opens JXR files correctly out 
+  of the box. Unfortunately it doesn't seem to open (P)RGBA @32bpp files as 
+  it only wants (P)BGRA32bpp files (a format not supported by Qt). Only for 
+  this format an hack is activated to guarantee total compatibility of the 
+  plugin with Windows.
+- `JXR_ENABLE_ADVANCED_METADATA`: enable metadata support (e.g. XMP). Some 
+  distributions use an incomplete JXR library that does not allow reading 
+  metadata, causing compilation errors.
 
 ### The KRA plugin
 
@@ -253,15 +371,19 @@ image.
 ### The PSD plugin
 
 PSD support has the following limitations:
-- Only images saved by Photoshop using compatibility mode enabled (Photoshop default) can be decoded.
+- Only images saved by Photoshop using compatibility mode enabled (Photoshop 
+  default) can be decoded.
 - Multichannel images are treated as CMYK if they have 2 or more channels.
 - Multichannel images are treated as Grayscale if they have 1 channel.
 - Duotone images are treated as grayscale images.
 - Extra channels other than alpha are discarded.
 
-The following defines can be defined in cmake to modify the behavior of the plugin:
-- `PSD_FAST_LAB_CONVERSION`: the LAB image is converted to linear sRGB instead of sRGB which significantly increases performance.
-- `PSD_NATIVE_CMYK_SUPPORT_DISABLED`: disable native support for CMYK images when compiled with Qt 6.8+
+The following defines can be defined in cmake to modify the behavior of the 
+plugin:
+- `PSD_FAST_LAB_CONVERSION`: the LAB image is converted to linear sRGB instead
+  of sRGB which significantly increases performance.
+- `PSD_NATIVE_CMYK_SUPPORT_DISABLED`: disable native support for CMYK images 
+  when compiled with Qt 6.8+
 
 ### The RAW plugin
 
@@ -276,7 +398,9 @@ The default setting tries to balance quality and conversion speed.
 ### The XCF plugin
 
 XCF support has the following limitations:
-- XCF format up to [version 12](https://testing.developer.gimp.org/core/standards/xcf/#version-history) (no support for GIMP 3).
+- XCF format up to [version 12](https://testing.developer.gimp.org/core/standards/xcf/#version-history) 
+  (no support for GIMP 3).
 - The returned image is always 8-bit.
 - Cannot read zlib compressed files.
-- The rendered image may be slightly different (colors/transparencies) than in GIMP.
+- The rendered image may be slightly different (colors/transparencies) than 
+  in GIMP.

autotests/CMakeLists.txt

@@ -19,9 +19,15 @@ macro(kimageformats_read_tests)
     endif()
 
     foreach(_testname ${KIF_RT_UNPARSED_ARGUMENTS})
+        string(REGEX MATCH "-skipoptional" _is_skip_optional "${_testname}")
+        unset(skip_optional_arg)
+        if (_is_skip_optional)
+            set(skip_optional_arg "--skip-optional-tests")
+            string(REGEX REPLACE "-skipoptional$" "" _testname "${_testname}")
+        endif()
         add_test(
             NAME kimageformats-read-${_testname}
-            COMMAND readtest ${_fuzzarg} ${_testname}
+            COMMAND readtest ${skip_optional_arg} ${_fuzzarg} ${_testname}
         )
     endforeach(_testname)
 endmacro()
@@ -43,6 +49,8 @@ macro(kimageformats_write_tests)
     foreach(_testname ${KIF_RT_UNPARSED_ARGUMENTS})
         string(REGEX MATCH "-lossless$" _is_lossless "${_testname}")
         string(REGEX MATCH "-nodatacheck" _is_no_data_check "${_testname}")
+        string(REGEX MATCH "-skipoptional" _is_skip_optional "${_testname}")
+        unset(skip_optional_arg)
         unset(lossless_arg)
         unset(no_data_check_arg)
         if (_is_lossless)
@@ -53,9 +61,13 @@ macro(kimageformats_write_tests)
             set(no_data_check_arg "--no-data-check")
             string(REGEX REPLACE "-nodatacheck$" "" _testname "${_testname}")
         endif()
+        if (_is_skip_optional)
+            set(skip_optional_arg "--skip-optional-tests")
+            string(REGEX REPLACE "-skipoptional$" "" _testname "${_testname}")
+        endif()
         add_test(
             NAME kimageformats-write-${_testname}
-            COMMAND writetest ${lossless_arg} ${no_data_check_arg} ${_fuzzarg} ${_testname}
+            COMMAND writetest ${lossless_arg} ${no_data_check_arg} ${skip_optional_arg} ${_fuzzarg} ${_testname}
         )
     endforeach(_testname)
 endmacro()
@@ -110,22 +122,46 @@ if (LibHeif_FOUND)
         kimageformats_read_tests(FUZZ 1
             hej2
         )
+        kimageformats_write_tests(FUZZ 1
+            hej2-nodatacheck-lossless
+        )
     endif()
 
-    if (LibHeif_VERSION VERSION_GREATER_EQUAL "1.19.0")
+    if (LibHeif_VERSION VERSION_GREATER_EQUAL "1.19.6")
         kimageformats_read_tests(FUZZ 4
             avci
         )
     endif()
 endif()
 
-if (LibJXL_FOUND AND LibJXLThreads_FOUND)
+if (OpenJPEG_FOUND)
     kimageformats_read_tests(
-        jxl
-    )
-    kimageformats_write_tests(
-        jxl-nodatacheck-lossless
+        jp2
     )
+    # CMYK writing is incorrect in versions before 2.5.3
+    if ("${OPENJPEG_MAJOR_VERSION}.${OPENJPEG_MINOR_VERSION}.${OPENJPEG_BUILD_VERSION}" VERSION_GREATER_EQUAL "2.5.3")
+        kimageformats_write_tests(
+            jp2-nodatacheck-lossless
+        )
+    endif()
+endif()
+
+if (LibJXL_FOUND AND LibJXLThreads_FOUND)
+    if(LibJXL_VERSION VERSION_GREATER_EQUAL "0.11.0")
+        kimageformats_read_tests(
+            jxl
+        )
+        kimageformats_write_tests(
+            jxl-nodatacheck-lossless
+        )
+    else()
+        kimageformats_read_tests(
+            jxl-skipoptional
+        )
+        kimageformats_write_tests(
+            jxl-skipoptional-nodatacheck-lossless
+        )
+    endif()
 endif()
 
 if (LibJXR_FOUND)
@@ -137,9 +173,7 @@ if (LibJXR_FOUND)
     )
 endif()
 
-# Allow some fuzziness when reading this formats, to allow for
-# rounding errors (eg: in alpha blending).
-kimageformats_read_tests(FUZZ 1
+kimageformats_read_tests(
     xcf
 )
 
@@ -150,7 +184,7 @@ kimageformats_read_tests(FUZZ 1
 # You can append -lossless to the format to indicate that
 # reading back the image data will result in an identical image.
 kimageformats_write_tests(
-    pcx-lossless
+    pcx-nodatacheck
     pic-lossless
     qoi-lossless
     rgb-lossless
@@ -169,7 +203,7 @@ if (OpenEXR_FOUND)
     )
     # Color space conversions from sRGB to linear on saving and
     # from linear to sRGB on loading result in some rounding errors.
-    kimageformats_write_tests(FUZZ 5
+    kimageformats_write_tests(FUZZ 6
         exr-nodatacheck-lossless
     )
 endif()

autotests/fuzzyeq.cpp

@@ -4,34 +4,66 @@
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
+#include <QImage>
+#include <QRgb>
+#include <QRgba64>
+
+inline int iAbs(const int &v)
+{
+    return v < 0 ? -v : v;
+}
+
 template<class Trait>
-static bool fuzzyeq(const QImage &im1, const QImage &im2, uchar fuzziness)
+static bool fuzzyeq(const QImage &im1, const QImage &im2, int fuzziness, bool perceptiveFuzzer)
 {
     Q_ASSERT(im1.format() == im2.format());
     Q_ASSERT(im1.depth() == 24 || im1.depth() == 32 || im1.depth() == 64);
 
+    const bool hasAlpha = im1.hasAlphaChannel();
     const int height = im1.height();
     const int width = im1.width();
     for (int i = 0; i < height; ++i) {
         const Trait *line1 = reinterpret_cast<const Trait *>(im1.scanLine(i));
         const Trait *line2 = reinterpret_cast<const Trait *>(im2.scanLine(i));
         for (int j = 0; j < width; ++j) {
-            if (line1[j] > line2[j]) {
-                if (line1[j] - line2[j] > fuzziness) {
-                    return false;
-                }
-            } else {
-                if (line2[j] - line1[j] > fuzziness) {
-                    return false;
-                }
+            auto &&px1 = line1[j];
+            auto &&px2 = line2[j];
+            auto fuzz = int(fuzziness);
+
+            // Calculate the deltas
+            auto dr = iAbs(int(qRed(px2)) - int(qRed(px1)));
+            auto dg = iAbs(int(qGreen(px2)) - int(qGreen(px1)));
+            auto db = iAbs(int(qBlue(px2)) - int(qBlue(px1)));
+            auto da = iAbs(int(qAlpha(px2)) - int(qAlpha(px1)));
+
+            // Always compare alpha even on images without it: some formats (e.g. RGBX64),
+            // want it set to a certain value (e.g. 65535).
+            if (da > fuzz)
+                return false;
+
+            // Calculate the perceptive fuzziness.
+            if (hasAlpha && perceptiveFuzzer) {
+                auto alpha = std::max(4, int(qAlpha(px1)));
+                if (sizeof(Trait) == 4)
+                    fuzz = std::min(fuzz * (255 / alpha), 255);
+                else
+                    fuzz = std::min(fuzz * (65535 / alpha), 255 * 257);
             }
+
+            // Compare the deltas of R, G, B components.
+            if (dr > fuzz)
+                return false;
+            if (dg > fuzz)
+                return false;
+            if (db > fuzz)
+                return false;
         }
     }
     return true;
 }
 
 // allow each byte to be different by up to 1, to allow for rounding errors
-static bool fuzzyeq(const QImage &im1, const QImage &im2, uchar fuzziness)
+static bool fuzzyeq(const QImage &im1, const QImage &im2, uchar fuzziness, bool perceptiveFuzzer = false)
 {
-    return (im1.depth() == 64) ? fuzzyeq<quint16>(im1, im2, fuzziness) : fuzzyeq<quint8>(im1, im2, fuzziness);
+    return (im1.depth() == 64) ? fuzzyeq<QRgba64>(im1, im2, int(fuzziness) * 257, perceptiveFuzzer) : fuzzyeq<QRgb>(im1, im2, int(fuzziness), perceptiveFuzzer);
 }

autotests/read/avif/metadata.avif.json

@@ -0,0 +1,59 @@
+[
+    {
+        "fileName" : "metadata.png",
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2025-02-19T08:27:22+01:00"
+            },
+            {
+                "key" : "Software" ,
+                "value" : "GIMP 3.0.0-RC3"
+            },
+            {
+                "key" : "Altitude",
+                "value" : "34"
+            },
+            {
+                "key" : "Author",
+                "value" : "KDE Project"
+            },
+            {
+                "key" : "Copyright",
+                "value" : "@2025 KDE Project"
+            },
+            {
+                "key" : "Description",
+                "value" : "TV broadcast test image."
+            },
+            {
+                "key" : "Latitude",
+                "value" : "44.6478"
+            },
+            {
+                "key" : "LensManufacturer",
+                "value" : "KDE Glasses"
+            },
+            {
+                "key" : "LensModel",
+                "value" : "A1234"
+            },
+            {
+                "key" : "Longitude",
+                "value" : "10.9254"
+            },
+            {
+                "key" : "Manufacturer",
+                "value" : "KFramework"
+            },
+            {
+                "key" : "Model",
+                "value" : "KImageFormats"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 11811,
+            "dotsPerMeterY" : 5905
+        }
+    }
+]

autotests/read/dds/rgba16dx10.dds.json

@@ -0,0 +1,7 @@
+[
+    {
+        "fileName" : "rgba16dx10.png",
+        "fuzziness" : 1,
+        "description" : "Minimum fuzziness value to pass the test on all architectures."
+    }
+]

autotests/read/dds/rgba_f16.dds.json

@@ -0,0 +1,7 @@
+[
+    {
+        "fileName" : "rgba_f16.png",
+        "fuzziness" : 1,
+        "description" : "Minimum fuzziness value to pass the test on all architectures."
+    }
+]

autotests/read/exr/rgb-gimp.exr.json

@@ -0,0 +1,9 @@
+[
+    {
+        "fileName" : "rgb-gimp.png",
+        "resolution" : {
+            "dotsPerMeterX" : 3937,
+            "dotsPerMeterY" : 3937
+        }
+    }
+]

autotests/read/hdr/orientation1.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation2.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation3.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation4.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation5.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation6.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation7.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/hdr/orientation8.hdr.json

@@ -1,5 +1,11 @@
 [
     {
-        "fileName" : "orientation_all.png"
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "GEGL"
+            }
+        ]
     }
 ]

autotests/read/heif/metadata.heif.json

@@ -0,0 +1,59 @@
+[
+    {
+        "fileName" : "metadata.png",
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2025-02-26T16:52:06Z"
+            },
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10 (Linux)"
+            },
+            {
+                "key" : "Altitude",
+                "value" : "34"
+            },
+            {
+                "key" : "Author",
+                "value" : "KDE Project"
+            },
+            {
+                "key" : "Copyright",
+                "value" : "@2025 KDE Project"
+            },
+            {
+                "key" : "Description",
+                "value" : "TV broadcast test image."
+            },
+            {
+                "key" : "Latitude",
+                "value" : "44.6478"
+            },
+            {
+                "key" : "LensManufacturer",
+                "value" : "KDE Glasses"
+            },
+            {
+                "key" : "LensModel",
+                "value" : "A1234"
+            },
+            {
+                "key" : "Longitude",
+                "value" : "10.9254"
+            },
+            {
+                "key" : "Manufacturer",
+                "value" : "KFramework"
+            },
+            {
+                "key" : "Model",
+                "value" : "KImageFormats"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 11811,
+            "dotsPerMeterY" : 5905
+        }
+    }
+]

autotests/read/jp2/testcard_cmyk.jp2.json

@@ -0,0 +1,11 @@
+[
+    {
+        "minQtVersion" : "6.8.0",
+        "fileName" : "testcard_cmyk.tif"
+    },
+    {
+        "maxQtVersion" : "6.7.99",
+        "unsupportedFormat" : true,
+        "comment" : "Qt versions lower than 6.8 do not support CMYK format so this test should be skipped."
+    }
+]

autotests/read/jp2/testcard_cmyk16.jp2.json

@@ -0,0 +1,11 @@
+[
+    {
+        "minQtVersion" : "6.8.0",
+        "fileName" : "testcard_cmyk16.tif"
+    },
+    {
+        "maxQtVersion" : "6.7.99",
+        "unsupportedFormat" : true,
+        "comment" : "Qt versions lower than 6.8 do not support CMYK format so this test should be skipped."
+    }
+]

autotests/read/jxl/gimp_exif.jxl.json

@@ -0,0 +1,19 @@
+[
+    {
+        "fileName" : "gimp_exif.png",
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2025-01-05T10:18:16"
+            },
+            {
+                "key" : "Software" ,
+                "value" : "GIMP 3.0.0-RC2"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 5905,
+            "dotsPerMeterY" : 6692
+        }
+    }
+]

autotests/read/jxr/metadata.jxr.json

@@ -0,0 +1,59 @@
+[
+    {
+        "fileName" : "metadata.png",
+        "metadata" : [
+            {
+                "key" : "CreationDate",
+                "value" : "2025-01-14T10:34:51Z"
+            },
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            },
+            {
+                "key" : "Altitude",
+                "value" : "34"
+            },
+            {
+                "key" : "Author",
+                "value" : "KDE Project"
+            },
+            {
+                "key" : "Copyright",
+                "value" : "@2025 KDE Project"
+            },
+            {
+                "key" : "Description",
+                "value" : "TV broadcast test image."
+            },
+            {
+                "key" : "Latitude",
+                "value" : "44.6478"
+            },
+            {
+                "key" : "LensManufacturer",
+                "value" : "KDE Glasses"
+            },
+            {
+                "key" : "LensModel",
+                "value" : "A1234"
+            },
+            {
+                "key" : "Longitude",
+                "value" : "10.9254"
+            },
+            {
+                "key" : "Manufacturer",
+                "value" : "KFramework"
+            },
+            {
+                "key" : "Model",
+                "value" : "KImageFormats"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 11811,
+            "dotsPerMeterY" : 5906
+        }
+    }
+]

autotests/read/jxr/orientation1.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation2.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation3.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation4.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation5.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation6.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation7.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/orientation8.jxr.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.10"
+            }
+        ]
+    }
+]

autotests/read/jxr/testcard_cmyk8.jxr.json

@@ -1,7 +1,11 @@
 [
     {
         "minQtVersion" : "6.8.0",
-        "fileName" : "testcard_cmyk8.tif"
+        "fileName" : "testcard_cmyk8.tif",
+        "resolution" : {
+            "dotsPerMeterX" : 3780,
+            "dotsPerMeterY" : 3780
+        }
     },
     {
         "maxQtVersion" : "6.7.99",

autotests/read/pcx/ICONDOC.pcx.json

@@ -0,0 +1,9 @@
+[
+    {
+        "fileName" : "ICONDOC.png",
+        "resolution" : {
+            "dotsPerMeterX" : 25197,
+            "dotsPerMeterY" : 13780
+        }
+    }
+]

autotests/read/psd/mch-16bits.psd.json

@@ -1,7 +1,21 @@
 [
     {
         "minQtVersion" : "6.8.0",
-        "fileName" : "mch-16bits_qt_6_8.tif"
+        "fileName" : "mch-16bits_qt_6_8.tif",
+        "resolution" : {
+            "dotsPerMeterX" : 4685,
+            "dotsPerMeterY" : 4685
+        },
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2022-11-11T14:27:52"
+            },
+            {
+                "key" : "Software",
+                "value" : "Adobe Photoshop 24.0 (Windows)"
+            }
+        ]
     },
     {
         "minQtVersion" : "6.0.0",

autotests/read/psd/mch-8bits.psd.json

@@ -1,7 +1,21 @@
 [
     {
         "minQtVersion" : "6.8.0",
-        "fileName" : "mch-8bits_qt_6.8.tif"
+        "fileName" : "mch-8bits_qt_6.8.tif",
+        "resolution" : {
+            "dotsPerMeterX" : 4685,
+            "dotsPerMeterY" : 4685
+        },
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2022-11-11T14:27:39"
+            },
+            {
+                "key" : "Software",
+                "value" : "Adobe Photoshop 24.0 (Windows)"
+            }
+        ]
     },
     {
         "minQtVersion" : "6.0.0",

autotests/read/psd/metadata.psd.json

@@ -0,0 +1,59 @@
+[
+    {
+        "fileName" : "metadata.png",
+        "metadata" : [
+            {
+                "key" : "ModificationDate",
+                "value" : "2025-01-14T13:53:32+01:00"
+            },
+            {
+                "key" : "Software" ,
+                "value" : "Adobe Photoshop 26.2 (Windows)"
+            },
+            {
+                "key" : "Altitude",
+                "value" : "34"
+            },
+            {
+                "key" : "Author",
+                "value" : "KDE Project"
+            },
+            {
+                "key" : "Copyright",
+                "value" : "@2025 KDE Project"
+            },
+            {
+                "key" : "Description",
+                "value" : "TV broadcast test image."
+            },
+            {
+                "key" : "Latitude",
+                "value" : "44.6478"
+            },
+            {
+                "key" : "LensManufacturer",
+                "value" : "KDE Glasses"
+            },
+            {
+                "key" : "LensModel",
+                "value" : "A1234"
+            },
+            {
+                "key" : "Longitude",
+                "value" : "10.9254"
+            },
+            {
+                "key" : "Manufacturer",
+                "value" : "KFramework"
+            },
+            {
+                "key" : "Model",
+                "value" : "KImageFormats"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 11811,
+            "dotsPerMeterY" : 11811
+        }
+    }
+]

autotests/read/psd/orientation1.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation2.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation3.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation4.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation5.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation6.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation7.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/psd/orientation8.psd.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "orientation_all.png",
+        "metadata" : [
+            {
+                "key" : "Software" ,
+                "value" : "LIFE Pro 2.18.5 (Windows)"
+            }
+        ]
+    }
+]

autotests/read/raw/RAW_KODAK_C330_FORMAT_NONE_YRGB.raw.json

@@ -0,0 +1,19 @@
+[
+    {
+        "fileName" : "RAW_KODAK_C330_FORMAT_NONE_YRGB.png",
+        "metadata" : [
+            {
+                "key" : "Manufacturer",
+                "value" : "Kodak"
+            },
+            {
+                "key" : "Model" ,
+                "value" : "C330"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 3937,
+            "dotsPerMeterY" : 3937
+        }
+    }
+]

autotests/read/sct/cmyk.sct.json

@@ -1,7 +1,11 @@
 [
     {
         "minQtVersion" : "6.8.0",
-        "fileName" : "cmyk.tif"
+        "fileName" : "cmyk.tif",
+        "resolution" : {
+            "dotsPerMeterX" : 3780,
+            "dotsPerMeterY" : 3780
+        }
     },
     {
         "maxQtVersion" : "6.7.99",

autotests/read/xcf/birthday16.xcf.json

@@ -2,7 +2,13 @@
     {
         "minQtVersion" : "6.7.0",
         "fileName" : "birthday16.png",
-        "seeAlso" : "https://bugreports.qt.io/browse/QTBUG-120614"
+        "seeAlso" : "https://bugreports.qt.io/browse/QTBUG-120614",
+        "fuzziness" : 2,
+        "perceptiveFuzziness" : true,
+        "resolution" : {
+            "dotsPerMeterX" : 4724,
+            "dotsPerMeterY" : 4724
+        }
     },
     {
         "minQtVersion" : "6.0.0",