GIT_SILENT Upgrade ECM and KF version requirements for 5.93.0 release.

- 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

.git-blame-ignore-revs

@@ -0,0 +1,3 @@
+#clang-format/tidy
+1169859b07f25c865ee0bfc2a7dc97a431651776
+eaca33bec8b19498c3621fc3a20a8c55a2812462

.gitignore

@@ -0,0 +1,28 @@
+# Ignore the following files
+*~
+*.[oa]
+*.diff
+*.kate-swp
+*.kdev4
+.kdev_include_paths
+*.kdevelop.pcs
+*.moc
+*.moc.cpp
+*.orig
+*.user
+.*.swp
+.swp.*
+Doxyfile
+Makefile
+avail
+random_seed
+/build*/
+CMakeLists.txt.user*
+*.unc-backup*
+.cmake/
+/.clang-format
+/compile_commands.json
+.clangd
+.idea
+/cmake-build*
+.cache

.gitlab-ci.yml

@@ -0,0 +1,9 @@
+# SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org>
+# SPDX-License-Identifier: CC0-1.0
+
+include:
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/linux.yml
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/android.yml
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/freebsd.yml
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/linux-qt6.yml
+  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/android-qt6.yml

.kde-ci.yml

@@ -0,0 +1,8 @@
+Dependencies:
+- 'on': ['Linux', 'FreeBSD', 'macOS', 'Windows']
+  'require':
+    'frameworks/extra-cmake-modules': '@same'
+    'frameworks/karchive' : '@same'
+
+Options:
+  test-before-installing: True

.reviewboardrc

@@ -1,5 +0,0 @@
-REVIEWBOARD_URL = "https://git.reviewboard.kde.org"
-REPOSITORY = 'git://anongit.kde.org/kimageformats'
-BRANCH = 'master'
-TARGET_GROUPS = 'kdeframeworks'
-TARGET_PEOPLE = 'alexmerry'

CMakeLists.txt

@@ -1,49 +1,77 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.16)
 
 project(KImageFormats)
 
-find_package(ECM 1.1.0 REQUIRED NO_MODULE)
+include(FeatureSummary)
+find_package(ECM 5.93.0  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)
 
-set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
+
+set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
 
 include(KDEInstallDirs)
-include(KDEFrameworkCompilerSettings)
+include(KDEFrameworkCompilerSettings NO_POLICY_SCOPE)
 include(KDECMakeSettings)
+include(KDEGitCommitHooks)
+
 
-include(FeatureSummary)
 include(CheckIncludeFiles)
+include(FindPkgConfig)
 
-set(REQUIRED_QT_VERSION 5.2.0)
-find_package(Qt5Gui ${REQUIRED_QT_VERSION} REQUIRED NO_MODULE)
+set(REQUIRED_QT_VERSION 5.15.2)
+find_package(Qt${QT_MAJOR_VERSION}Gui ${REQUIRED_QT_VERSION} REQUIRED NO_MODULE)
+
+find_package(KF5Archive)
+set_package_properties(KF5Archive PROPERTIES
+    TYPE OPTIONAL
+    PURPOSE "Required for the QImage plugin for Krita and OpenRaster images"
+)
 
 # EPS support depends on the gs utility; non-UNIX systems are unlikely to have
 # this available in PATH
 set(BUILD_EPS_PLUGIN FALSE)
 if (UNIX)
-    find_package(Qt5PrintSupport 5.2.0 NO_MODULE)
-    set_package_properties(Qt5PrintSupport PROPERTIES
+    find_package(Qt${QT_MAJOR_VERSION}PrintSupport ${REQUIRED_QT_VERSION} NO_MODULE)
+    set_package_properties(Qt${QT_MAJOR_VERSION}PrintSupport PROPERTIES
         PURPOSE "Required for the QImage plugin for EPS images"
         TYPE OPTIONAL
     )
-    if (Qt5PrintSupport_FOUND)
+    if (TARGET Qt${QT_MAJOR_VERSION}::PrintSupport)
         set(BUILD_EPS_PLUGIN TRUE)
     endif()
 endif()
 
-find_package(Jasper)
-set_package_properties(Jasper PROPERTIES
-    DESCRIPTION "A library for handling JPEG-2000 images"
-    PURPOSE "Required for the QImage plugin for JPEG-2000 images"
-    URL "http://www.ece.uvic.ca/~mdadams/jasper"
-    TYPE OPTIONAL
-)
-
-find_package(OpenEXR)
+find_package(OpenEXR 3.0 CONFIG QUIET)
+if(NOT OpenEXR_FOUND)
+    find_package(OpenEXR)
+endif()
 set_package_properties(OpenEXR PROPERTIES
     TYPE OPTIONAL
     PURPOSE "Required for the QImage plugin for OpenEXR images"
 )
 
+find_package(libavif 0.8.2 CONFIG)
+set_package_properties(libavif PROPERTIES
+    TYPE OPTIONAL
+    PURPOSE "Required for the QImage plugin for AVIF images"
+)
+
+option(KIMAGEFORMATS_HEIF "Enable plugin for HEIF format" OFF)
+if(KIMAGEFORMATS_HEIF)
+    pkg_check_modules(LibHeif IMPORTED_TARGET libheif>=1.10.0)
+endif()
+add_feature_info(LibHeif LibHeif_FOUND "required for the QImage plugin for HEIF/HEIC images")
+
+option(KIMAGEFORMATS_JXL "Enable plugin for JPEG XL format" ON)
+if(KIMAGEFORMATS_JXL)
+    pkg_check_modules(LibJXL IMPORTED_TARGET libjxl>=0.6.1)
+    pkg_check_modules(LibJXLThreads IMPORTED_TARGET libjxl_threads>=0.6.1)
+endif()
+add_feature_info(LibJXL LibJXL_FOUND "required for the QImage plugin for JPEG XL images")
+
+add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050f02)
+add_definitions(-DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x055900)
 add_subdirectory(src)
 if (BUILD_TESTING)
     add_subdirectory(autotests)
@@ -51,3 +79,5 @@ if (BUILD_TESTING)
 endif()
 
 feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)
+
+kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)

COPYING.LIB

@@ -1,510 +0,0 @@
-
-                  GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 2.1, February 1999
-
- Copyright (C) 1991, 1999 Free Software Foundation, Inc.
-	51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-[This is the first released version of the Lesser GPL.  It also counts
- as the successor of the GNU Library Public License, version 2, hence
- the version number 2.1.]
-
-                            Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-Licenses are intended to guarantee your freedom to share and change
-free software--to make sure the software is free for all its users.
-
-  This license, the Lesser General Public License, applies to some
-specially designated software packages--typically libraries--of the
-Free Software Foundation and other authors who decide to use it.  You
-can use it too, but we suggest you first think carefully about whether
-this license or the ordinary General Public License is the better
-strategy to use in any particular case, based on the explanations
-below.
-
-  When we speak of free software, we are referring to freedom of use,
-not price.  Our General Public Licenses are designed to make sure that
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+signature of Ty Coon, 1 April 1990
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+
+That's all there is to it!

LICENSES/LGPL-2.1-only.txt

@@ -0,0 +1,467 @@
+GNU LESSER GENERAL PUBLIC LICENSE
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+
+< signature of Ty Coon > , 1 April 1990
+
+Ty Coon, President of Vice
+
+That's all there is to it!

LICENSES/LGPL-2.1-or-later.txt

@@ -0,0 +1,468 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 2.1, February 1999
+
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+software is free for all its users.
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+as you received it does not specify a version number of the GNU Lesser General
+Public License, you may choose any version of the GNU Lesser General Public
+License ever published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide whether
+future versions of the GNU Lesser General Public License shall apply, that
+proxy's public statement of acceptance of any version is permanent authorization
+for you to choose that version for the Library.

LICENSES/LicenseRef-KDE-Accepted-LGPL.txt

@@ -0,0 +1,12 @@
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3 of the license or (at your option) any later version
+that is accepted by the membership of KDE e.V. (or its successor
+approved by the membership of KDE e.V.), which shall act as a
+proxy as defined in Section 6 of version 3 of the license.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.

README.md

@@ -1,6 +1,6 @@
 # KImageFormats
 
-Image format plugins for Qt
+Plugins to allow QImage to support extra file formats.
 
 ## Introduction
 
@@ -13,7 +13,7 @@ image formats.
 
 The following image formats have read-only support:
 
-- DirectDraw Surface (dds)
+- Animated Windows cursors (ani)
 - Gimp (xcf)
 - OpenEXR (exr)
 - Photoshop documents (psd)
@@ -21,8 +21,9 @@ The following image formats have read-only support:
 
 The following image formats have read and write support:
 
+- AV1 Image File Format (AVIF)
 - Encapsulated PostScript (eps)
-- JPEG-2000 (jp2)
+- JPEG XL (jxl)
 - Personal Computer Exchange (pcx)
 - SGI images (rgb, rgba, sgi, bw)
 - Softimage PIC (pic)
@@ -63,9 +64,3 @@ This framework is licensed under the
 The CMake code in this framework is licensed under the
 [BSD license](http://opensource.org/licenses/BSD-3-Clause).
 
-## Links
-
-- Home page: <https://projects.kde.org/projects/frameworks/kimageformats>
-- Mailing list: <https://mail.kde.org/mailman/listinfo/kde-frameworks-devel>
-- IRC channel: \#kde-devel on Freenode
-- Git repository: <https://projects.kde.org/projects/frameworks/kimageformats/repository>

autotests/CMakeLists.txt

@@ -3,7 +3,7 @@
 include(ECMMarkAsTest)
 include(CMakeParseArguments)
 
-add_definitions(-DPLUGIN_DIR="${CMAKE_CURRENT_BINARY_DIR}/../src")
+add_definitions(-DPLUGIN_DIR="${CMAKE_CURRENT_BINARY_DIR}/../bin")
 remove_definitions(-DQT_NO_CAST_FROM_ASCII)
 
 macro(kimageformats_read_tests)
@@ -15,7 +15,7 @@ macro(kimageformats_read_tests)
 
     if (NOT TARGET readtest)
         add_executable(readtest readtest.cpp)
-        target_link_libraries(readtest Qt5::Gui)
+        target_link_libraries(readtest Qt${QT_MAJOR_VERSION}::Gui)
         target_compile_definitions(readtest
             PRIVATE IMAGEDIR="${CMAKE_CURRENT_SOURCE_DIR}/read")
         ecm_mark_as_test(readtest)
@@ -30,23 +30,35 @@ macro(kimageformats_read_tests)
 endmacro()
 
 macro(kimageformats_write_tests)
+    cmake_parse_arguments(KIF_RT "" "FUZZ" "" ${ARGN})
+    set(_fuzzarg)
+    if (KIF_RT_FUZZ)
+        set(_fuzzarg -f ${KIF_RT_FUZZ})
+    endif()
+
     if (NOT TARGET writetest)
         add_executable(writetest writetest.cpp)
-        target_link_libraries(writetest Qt5::Gui)
+        target_link_libraries(writetest Qt${QT_MAJOR_VERSION}::Gui)
         target_compile_definitions(writetest
             PRIVATE IMAGEDIR="${CMAKE_CURRENT_SOURCE_DIR}/write")
         ecm_mark_as_test(writetest)
     endif()
-    foreach(_testname ${ARGN})
+    foreach(_testname ${KIF_RT_UNPARSED_ARGUMENTS})
         string(REGEX MATCH "-lossless$" _is_lossless "${_testname}")
+        string(REGEX MATCH "-nodatacheck" _is_no_data_check "${_testname}")
         unset(lossless_arg)
+        unset(no_data_check_arg)
         if (_is_lossless)
             set(lossless_arg "--lossless")
             string(REGEX REPLACE "-lossless$" "" _testname "${_testname}")
         endif()
+        if (_is_no_data_check)
+            set(no_data_check_arg "--no-data-check")
+            string(REGEX REPLACE "-nodatacheck$" "" _testname "${_testname}")
+        endif()
         add_test(
             NAME kimageformats-write-${_testname}
-            COMMAND writetest ${lossless_arg} ${_testname}
+            COMMAND writetest ${lossless_arg} ${no_data_check_arg} ${_fuzzarg} ${_testname}
         )
     endforeach(_testname)
 endmacro()
@@ -55,12 +67,50 @@ endmacro()
 # Loads each <format> image in read/<format>/, and compares the
 # result against the data read from the corresponding png file
 kimageformats_read_tests(
+    hdr
     pcx
     psd
     ras
     rgb
     tga
 )
+
+if (KF5Archive_FOUND)
+    kimageformats_read_tests(
+        kra
+        ora
+    )
+endif()
+
+if (TARGET avif)
+    kimageformats_read_tests(
+        avif
+    )
+    # because the plug-ins use RGB->YUV conversion which sometimes results in 1 value difference.
+    kimageformats_write_tests(FUZZ 1
+        avif-nodatacheck-lossless
+    )
+endif()
+
+if (LibHeif_FOUND)
+    kimageformats_read_tests(
+        heif
+    )
+    # because the plug-ins use RGB->YUV conversion which sometimes results in 1 value difference.
+    kimageformats_write_tests(FUZZ 1
+        heif-nodatacheck-lossless
+    )
+endif()
+
+if (LibJXL_FOUND AND LibJXLThreads_FOUND)
+    kimageformats_read_tests(
+        jxl
+    )
+    kimageformats_write_tests(
+        jxl-nodatacheck-lossless
+    )
+endif()
+
 # Allow some fuzziness when reading this formats, to allow for
 # rounding errors (eg: in alpha blending).
 kimageformats_read_tests(FUZZ 1
@@ -86,30 +136,23 @@ kimageformats_write_tests(
 #    kimageformats_read_tests(eps)
 #    kimageformats_write_tests(eps)
 #endif()
-if (JASPER_FOUND)
-    # FIXME: when we read JPEG2000 files on different architectures
-    # (specifically x86_64 and i386), we get off-by-one errors. The
-    # jasper utility does not have the same problem, so it is not a
-    # problem inherent in the jasper library. For now, we just allow
-    # a little fuzziness to make sure it does not get any worse (being
-    # off by one in an image value is not noticable to the human eye,
-    # so it is not a release-blocking issue).
-    kimageformats_read_tests(FUZZ 1 jp2)
-    kimageformats_write_tests(jp2)
-endif()
 if (OpenEXR_FOUND)
     # FIXME: OpenEXR tests
 endif()
 
+find_package(Qt${QT_MAJOR_VERSION}Test ${REQUIRED_QT_VERSION} CONFIG QUIET)
 
-find_package(Qt5Test ${REQUIRED_QT_VERSION} CONFIG QUIET)
-
-if(NOT Qt5Test_FOUND)
-    message(STATUS "Qt5Test not found, some autotests will not be built.")
+if(NOT TARGET Qt${QT_MAJOR_VERSION}::Test)
+    message(STATUS "Qt${QT_MAJOR_VERSION}Test not found, some autotests will not be built.")
     return()
 endif()
 
 add_executable(pictest pictest.cpp)
-target_link_libraries(pictest Qt5::Gui Qt5::Test)
+target_link_libraries(pictest Qt${QT_MAJOR_VERSION}::Gui Qt${QT_MAJOR_VERSION}::Test)
 ecm_mark_as_test(pictest)
 add_test(NAME kimageformats-pic COMMAND pictest)
+
+add_executable(anitest anitest.cpp)
+target_link_libraries(anitest Qt${QT_MAJOR_VERSION}::Gui Qt${QT_MAJOR_VERSION}::Test)
+ecm_mark_as_test(anitest)
+add_test(NAME kimageformats-ani COMMAND anitest)

autotests/anitest.cpp

@@ -0,0 +1,119 @@
+/*
+    SPDX-FileCopyrightText: 2020 Kai Uwe Broulik <kde@broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#include <QImage>
+#include <QImageReader>
+#include <QTest>
+
+static bool imgEquals(const QImage &im1, const QImage &im2)
+{
+    const int height = im1.height();
+    const int width = im1.width();
+    for (int i = 0; i < height; ++i) {
+        const auto *line1 = reinterpret_cast<const quint8 *>(im1.scanLine(i));
+        const auto *line2 = reinterpret_cast<const quint8 *>(im2.scanLine(i));
+        for (int j = 0; j < width; ++j) {
+            if (line1[j] - line2[j] != 0) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+class AniTests : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void initTestCase()
+    {
+        QCoreApplication::addLibraryPath(QStringLiteral(PLUGIN_DIR));
+    }
+
+    void testReadMetadata()
+    {
+        QImageReader reader(QFINDTESTDATA("ani/test.ani"));
+
+        QVERIFY(reader.canRead());
+
+        QCOMPARE(reader.imageCount(), 4);
+
+        QCOMPARE(reader.size(), QSize(32, 32));
+
+        QCOMPARE(reader.text(QStringLiteral("Title")), QStringLiteral("ANI Test"));
+        QCOMPARE(reader.text(QStringLiteral("Author")), QStringLiteral("KDE Community"));
+    }
+
+    void textRead()
+    {
+        QImageReader reader(QFINDTESTDATA("ani/test.ani"));
+        QVERIFY(reader.canRead());
+        QCOMPARE(reader.currentImageNumber(), 0);
+
+        QImage aniFrame;
+        QVERIFY(reader.read(&aniFrame));
+
+        QImage img1(QFINDTESTDATA("ani/test_1.png"));
+        img1.convertTo(aniFrame.format());
+
+        QVERIFY(imgEquals(aniFrame, img1));
+
+        QCOMPARE(reader.nextImageDelay(), 166); // 10 "jiffies"
+
+        QVERIFY(reader.canRead());
+        // that read() above should have advanced us to the next frame
+        QCOMPARE(reader.currentImageNumber(), 1);
+
+        QVERIFY(reader.read(&aniFrame));
+        QImage img2(QFINDTESTDATA("ani/test_2.png"));
+        img2.convertTo(aniFrame.format());
+
+        QVERIFY(imgEquals(aniFrame, img2));
+
+        // The "middle" frame has a longer delay than the others
+        QCOMPARE(reader.nextImageDelay(), 333); // 20 "jiffies"
+
+        QVERIFY(reader.canRead());
+        QCOMPARE(reader.currentImageNumber(), 2);
+
+        QVERIFY(reader.read(&aniFrame));
+        QImage img3(QFINDTESTDATA("ani/test_3.png"));
+        img3.convertTo(aniFrame.format());
+
+        QVERIFY(imgEquals(aniFrame, img3));
+
+        QCOMPARE(reader.nextImageDelay(), 166);
+
+        QVERIFY(reader.canRead());
+        QCOMPARE(reader.currentImageNumber(), 3);
+
+        QVERIFY(reader.read(&aniFrame));
+        // custom sequence in the ANI file should get us back to img2
+        QVERIFY(imgEquals(aniFrame, img2));
+
+        QCOMPARE(reader.nextImageDelay(), 166);
+
+        // We should have reached the end now
+        QVERIFY(!reader.canRead());
+        QVERIFY(!reader.read(&aniFrame));
+
+        // Jump back to the start
+        QVERIFY(reader.jumpToImage(0));
+
+        QVERIFY(reader.canRead());
+        QCOMPARE(reader.currentImageNumber(), 0);
+
+        QCOMPARE(reader.nextImageDelay(), 166);
+
+        QVERIFY(reader.read(&aniFrame));
+        QVERIFY(imgEquals(aniFrame, img1));
+    }
+};
+
+QTEST_MAIN(AniTests)
+
+#include "anitest.moc"

autotests/fuzzyeq.cpp

@@ -0,0 +1,37 @@
+/*
+    SPDX-FileCopyrightText: 2014 Alex Merry <alex.merry@kdemail.net>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+template<class Trait>
+static bool fuzzyeq(const QImage &im1, const QImage &im2, uchar fuzziness)
+{
+    Q_ASSERT(im1.format() == im2.format());
+    Q_ASSERT(im1.depth() == 24 || im1.depth() == 32 || im1.depth() == 64);
+
+    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;
+                }
+            }
+        }
+    }
+    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)
+{
+    return (im1.depth() == 64) ? fuzzyeq<quint16>(im1, im2, fuzziness) : fuzzyeq<quint8>(im1, im2, fuzziness);
+}

autotests/pictest.cpp

@@ -1,23 +1,8 @@
 /*
- * Copyright 2014  Alex Merry <alex.merry@kdemail.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) version 3, or any
- * later version accepted by the membership of KDE e.V. (or its
- * successor approved by the membership of KDE e.V.), which shall
- * act as a proxy defined in Section 6 of version 3 of the license.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library.  If not, see
- * <http://www.gnu.org/licenses/>.
- */
+    SPDX-FileCopyrightText: 2014 Alex Merry <alex.merry@kdemail.net>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
 
 #include <stdio.h>
 
@@ -50,61 +35,27 @@ private:
         QTest::addColumn<QImage::Format>("pngformat");
         QTest::addColumn<bool>("compress");
 
-        QTest::newRow("4x4 no alpha RLE")
-            << QFINDTESTDATA("pic/4x4-simple-color.pic")
-            << QFINDTESTDATA("pic/4x4-simple-color.png")
-            << QString()
-            << false
-            << QImage::Format_RGB32
-            << true;
+        QTest::newRow("4x4 no alpha RLE") << QFINDTESTDATA("pic/4x4-simple-color.pic") << QFINDTESTDATA("pic/4x4-simple-color.png") << QString() << false
+                                          << QImage::Format_RGB32 << true;
 
-        QTest::newRow("4x4 no alpha raw")
-            << QFINDTESTDATA("pic/4x4-simple-color-uncompressed.pic")
-            << QFINDTESTDATA("pic/4x4-simple-color.png")
-            << QString()
-            << false
-            << QImage::Format_RGB32
-            << false;
+        QTest::newRow("4x4 no alpha raw") << QFINDTESTDATA("pic/4x4-simple-color-uncompressed.pic") << QFINDTESTDATA("pic/4x4-simple-color.png") << QString()
+                                          << false << QImage::Format_RGB32 << false;
 
-        QTest::newRow("Short comment")
-            << QFINDTESTDATA("pic/short-comment.pic")
-            << QFINDTESTDATA("pic/4x4-simple-color.png")
-            << QStringLiteral("Test comment value")
-            << false
-            << QImage::Format_RGB32
-            << true;
+        QTest::newRow("Short comment") << QFINDTESTDATA("pic/short-comment.pic") << QFINDTESTDATA("pic/4x4-simple-color.png")
+                                       << QStringLiteral("Test comment value") << false << QImage::Format_RGB32 << true;
 
-        QTest::newRow("Long comment")
-            << QFINDTESTDATA("pic/long-comment.pic")
-            << QFINDTESTDATA("pic/4x4-simple-color.png")
-            << QStringLiteral("Test comment value that goes right up to the end of the comment field and has no")
-            << false
-            << QImage::Format_RGB32
-            << true;
+        QTest::newRow("Long comment") << QFINDTESTDATA("pic/long-comment.pic") << QFINDTESTDATA("pic/4x4-simple-color.png")
+                                      << QStringLiteral("Test comment value that goes right up to the end of the comment field and has no") << false
+                                      << QImage::Format_RGB32 << true;
 
-        QTest::newRow("Long run-lengths")
-            << QFINDTESTDATA("pic/long-runs.pic")
-            << QFINDTESTDATA("pic/long-runs.png")
-            << QString()
-            << false
-            << QImage::Format_RGB32
-            << true;
+        QTest::newRow("Long run-lengths") << QFINDTESTDATA("pic/long-runs.pic") << QFINDTESTDATA("pic/long-runs.png") << QString() << false
+                                          << QImage::Format_RGB32 << true;
 
-        QTest::newRow("4x4 with alpha RLE")
-            << QFINDTESTDATA("pic/4x4-alpha.pic")
-            << QFINDTESTDATA("pic/4x4-alpha.png")
-            << QString()
-            << true
-            << QImage::Format_ARGB32
-            << true;
+        QTest::newRow("4x4 with alpha RLE") << QFINDTESTDATA("pic/4x4-alpha.pic") << QFINDTESTDATA("pic/4x4-alpha.png") << QString() << true
+                                            << QImage::Format_ARGB32 << true;
 
-        QTest::newRow("4x4 with alpha raw")
-            << QFINDTESTDATA("pic/4x4-alpha-uncompressed.pic")
-            << QFINDTESTDATA("pic/4x4-alpha.png")
-            << QString()
-            << true
-            << QImage::Format_ARGB32
-            << false;
+        QTest::newRow("4x4 with alpha raw") << QFINDTESTDATA("pic/4x4-alpha-uncompressed.pic") << QFINDTESTDATA("pic/4x4-alpha.png") << QString() << true
+                                            << QImage::Format_ARGB32 << false;
     }
 
 private Q_SLOTS:
@@ -121,13 +72,8 @@ private Q_SLOTS:
         //     so there is no actual data loss in converting to RGB16.
         //     This just tests that the pic plugin can deal with different
         //     input formats.
-        QTest::newRow("altered format")
-            << QFINDTESTDATA("pic/4x4-simple-color.pic")
-            << QFINDTESTDATA("pic/4x4-simple-color.png")
-            << QString()
-            << false
-            << QImage::Format_RGB16
-            << true;
+        QTest::newRow("altered format") << QFINDTESTDATA("pic/4x4-simple-color.pic") << QFINDTESTDATA("pic/4x4-simple-color.png") << QString() << false
+                                        << QImage::Format_RGB16 << true;
     }
 
     void testRead_data()
@@ -163,17 +109,12 @@ private Q_SLOTS:
         imgWriter.write(pngImage);
 
         if (expData != picData) {
-            QString fileNameBase = QUuid::createUuid().toString()
-                .remove(QLatin1Char('{'))
-                .remove(QLatin1Char('}'));
+            QString fileNameBase = QUuid::createUuid().toString().remove(QLatin1Char('{')).remove(QLatin1Char('}'));
             QFile dumpFile(fileNameBase + QStringLiteral(".pic"));
             QVERIFY2(dumpFile.open(QIODevice::WriteOnly), qPrintable(dumpFile.errorString()));
             dumpFile.write(picData);
-            QString msg = QStringLiteral("Written data (")
-                        + dumpFile.fileName()
-                        + QStringLiteral(") differed from expected data (")
-                        + picfile
-                        + QLatin1Char(')');
+            QString msg =
+                QStringLiteral("Written data (") + dumpFile.fileName() + QStringLiteral(") differed from expected data (") + picfile + QLatin1Char(')');
             QFAIL(qPrintable(msg));
         }
     }
@@ -197,29 +138,20 @@ private Q_SLOTS:
         QCOMPARE(inputImage.width(), expImage.width());
         QCOMPARE(inputImage.height(), expImage.height());
         QCOMPARE(inputImage.hasAlphaChannel(), alpha);
-        QCOMPARE(inputImage.format(), alpha ? QImage::Format_ARGB32
-                                            : QImage::Format_RGB32);
+        QCOMPARE(inputImage.format(), alpha ? QImage::Format_ARGB32 : QImage::Format_RGB32);
 
         expImage = expImage.convertToFormat(pngformat);
-        expImage = expImage.convertToFormat(alpha ? QImage::Format_ARGB32
-                                                  : QImage::Format_RGB32);
+        expImage = expImage.convertToFormat(alpha ? QImage::Format_ARGB32 : QImage::Format_RGB32);
         if (inputImage != expImage) {
-            QString fileNameBase = QUuid::createUuid().toString()
-                .remove(QLatin1Char('{'))
-                .remove(QLatin1Char('}'));
+            QString fileNameBase = QUuid::createUuid().toString().remove(QLatin1Char('{')).remove(QLatin1Char('}'));
             QFile picDumpFile(fileNameBase + QStringLiteral("-expected.data"));
             QVERIFY2(picDumpFile.open(QIODevice::WriteOnly), qPrintable(picDumpFile.errorString()));
-            picDumpFile.write(reinterpret_cast<const char *>(inputImage.bits()),
-                              inputImage.byteCount());
+            picDumpFile.write(reinterpret_cast<const char *>(inputImage.bits()), inputImage.sizeInBytes());
             QFile pngDumpFile(fileNameBase + QStringLiteral("-actual.data"));
             QVERIFY2(pngDumpFile.open(QIODevice::WriteOnly), qPrintable(pngDumpFile.errorString()));
-            pngDumpFile.write(reinterpret_cast<const char *>(expImage.bits()),
-                              expImage.byteCount());
-            QString msg = QStringLiteral("Read image (")
-                        + picDumpFile.fileName()
-                        + QStringLiteral(") differed from expected image (")
-                        + pngDumpFile.fileName()
-                        + QLatin1Char(')');
+            pngDumpFile.write(reinterpret_cast<const char *>(expImage.bits()), expImage.sizeInBytes());
+            QString msg = QStringLiteral("Read image (") + picDumpFile.fileName() + QStringLiteral(") differed from expected image (") + pngDumpFile.fileName()
+                + QLatin1Char(')');
             QFAIL(qPrintable(msg));
         }
     }
@@ -267,8 +199,7 @@ private Q_SLOTS:
 
         QImageReader inputReader(picfile, "pic");
 
-        QCOMPARE(inputReader.imageFormat(),
-                 alpha ? QImage::Format_ARGB32 : QImage::Format_RGB32);
+        QCOMPARE(inputReader.imageFormat(), alpha ? QImage::Format_ARGB32 : QImage::Format_RGB32);
     }
 };
 

autotests/readtest.cpp

@@ -1,23 +1,8 @@
 /*
- * Copyright 2014  Alex Merry <alex.merry@kdemail.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) version 3, or any
- * later version accepted by the membership of KDE e.V. (or its
- * successor approved by the membership of KDE e.V.), which shall
- * act as a proxy defined in Section 6 of version 3 of the license.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library.  If not, see
- * <http://www.gnu.org/licenses/>.
- */
+    SPDX-FileCopyrightText: 2014 Alex Merry <alex.merry@kdemail.net>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
 
 #include <stdio.h>
 
@@ -31,50 +16,44 @@
 
 #include "../tests/format-enum.h"
 
+#include "fuzzyeq.cpp"
+
 static void writeImageData(const char *name, const QString &filename, const QImage &image)
 {
     QFile file(filename);
     if (file.open(QIODevice::WriteOnly)) {
-        qint64 written = file.write(reinterpret_cast<const char *>(image.bits()), image.byteCount());
-        if (written == image.byteCount()) {
-            QTextStream(stdout) << "       " << name
-                                << " written to " << filename << "\n";
+        qint64 written = file.write(reinterpret_cast<const char *>(image.bits()), image.sizeInBytes());
+        if (written == image.sizeInBytes()) {
+            QTextStream(stdout) << "       " << name << " written to " << filename << "\n";
         } else {
-            QTextStream(stdout) << "       could not write " << name
-                                << " to " << filename << ":"
-                                << file.errorString() << "\n";
+            QTextStream(stdout) << "       could not write " << name << " to " << filename << ":" << file.errorString() << "\n";
         }
     } else {
-        QTextStream(stdout) << "       could not open "
-                            << filename << ":"
-                            << file.errorString() << "\n";
+        QTextStream(stdout) << "       could not open " << filename << ":" << file.errorString() << "\n";
     }
 }
 
-// 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)
+// Returns the original format if we support, or returns
+// format which we preferred to use for `fuzzyeq()`.
+// We do only support formats with 8-bits/16-bits pre pixel.
+// If that changed, don't forget to update `fuzzyeq()` too
+static QImage::Format preferredFormat(QImage::Format fmt)
 {
-    const int height = im1.height();
-    const int width = im1.width();
-    for (int i = 0; i < height; ++i) {
-        const uchar *line1 = im1.scanLine(i);
-        const uchar *line2 = 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;
-            }
-        }
+    switch (fmt) {
+    case QImage::Format_RGB32:
+    case QImage::Format_ARGB32:
+    case QImage::Format_RGBX64:
+    case QImage::Format_RGBA64:
+        return fmt;
+    default:
+        return QImage::Format_ARGB32;
     }
-    return true;
 }
 
-int main(int argc, char ** argv)
+int main(int argc, char **argv)
 {
     QCoreApplication app(argc, argv);
+    QCoreApplication::removeLibraryPath(QStringLiteral(PLUGIN_DIR));
     QCoreApplication::addLibraryPath(QStringLiteral(PLUGIN_DIR));
     QCoreApplication::setApplicationName(QStringLiteral("readtest"));
     QCoreApplication::setApplicationVersion(QStringLiteral("1.0.0"));
@@ -84,10 +63,9 @@ int main(int argc, char ** argv)
     parser.addHelpOption();
     parser.addVersionOption();
     parser.addPositionalArgument(QStringLiteral("format"), QStringLiteral("format to test"));
-    QCommandLineOption fuzz(
-        QStringList() << QStringLiteral("f") << QStringLiteral("fuzz"),
-        QStringLiteral("Allow for some deviation in ARGB data."),
-        QStringLiteral("max"));
+    QCommandLineOption fuzz(QStringList() << QStringLiteral("f") << QStringLiteral("fuzz"),
+                            QStringLiteral("Allow for some deviation in ARGB data."),
+                            QStringLiteral("max"));
     parser.addOption(fuzz);
 
     parser.process(app);
@@ -123,87 +101,82 @@ int main(int argc, char ** argv)
     int failed = 0;
 
     QTextStream(stdout) << "********* "
-        << "Starting basic read tests for "
-        << suffix << " images *********\n";
+                        << "Starting basic read tests for " << suffix << " images *********\n";
 
-    foreach (QFileInfo fi, imgdir.entryInfoList()) {
+    const QList<QByteArray> formats = QImageReader::supportedImageFormats();
+    QStringList formatStrings;
+    formatStrings.reserve(formats.size());
+    std::transform(formats.begin(), formats.end(), std::back_inserter(formatStrings), [](const QByteArray &format) {
+        return QString(format);
+    });
+    QTextStream(stdout) << "QImageReader::supportedImageFormats: " << formatStrings.join(", ") << "\n";
+
+    const QFileInfoList lstImgDir = imgdir.entryInfoList();
+    for (const QFileInfo &fi : lstImgDir) {
         int suffixPos = fi.filePath().count() - suffix.count();
         QString inputfile = fi.filePath();
-        QString expfile = fi.filePath().replace(suffixPos, suffix.count(), "png");
+        QString expfile = fi.filePath().replace(suffixPos, suffix.count(), QStringLiteral("png"));
         QString expfilename = QFileInfo(expfile).fileName();
 
-        QImageReader inputReader(inputfile, format.constData());
+        QImageReader inputReader(inputfile, format);
         QImageReader expReader(expfile, "png");
 
         QImage inputImage;
         QImage expImage;
 
         if (!expReader.read(&expImage)) {
-            QTextStream(stdout) << "ERROR: " << fi.fileName()
-                << ": could not load " << expfilename
-                << ": " << expReader.errorString()
-                << "\n";
+            QTextStream(stdout) << "ERROR: " << fi.fileName() << ": could not load " << expfilename << ": " << expReader.errorString() << "\n";
+            ++failed;
+            continue;
+        }
+        if (!inputReader.canRead()) {
+            QTextStream(stdout) << "FAIL : " << fi.fileName() << ": failed can read: " << inputReader.errorString() << "\n";
             ++failed;
             continue;
         }
         if (!inputReader.read(&inputImage)) {
-            QTextStream(stdout) << "FAIL : " << fi.fileName()
-                << ": failed to load: "
-                << inputReader.errorString()
-                << "\n";
+            QTextStream(stdout) << "FAIL : " << fi.fileName() << ": failed to load: " << inputReader.errorString() << "\n";
             ++failed;
             continue;
         }
         if (expImage.width() != inputImage.width()) {
-            QTextStream(stdout) << "FAIL : " << fi.fileName()
-                << ": width was " << inputImage.width()
-                << " but " << expfilename << " width was "
-                << expImage.width() << "\n";
+            QTextStream(stdout) << "FAIL : " << fi.fileName() << ": width was " << inputImage.width() << " but " << expfilename << " width was "
+                                << expImage.width() << "\n";
             ++failed;
         } else if (expImage.height() != inputImage.height()) {
-            QTextStream(stdout) << "FAIL : " << fi.fileName()
-                << ": height was " << inputImage.height()
-                << " but " << expfilename << " height was "
-                << expImage.height() << "\n";
+            QTextStream(stdout) << "FAIL : " << fi.fileName() << ": height was " << inputImage.height() << " but " << expfilename << " height was "
+                                << expImage.height() << "\n";
             ++failed;
         } else {
-            if (inputImage.format() != QImage::Format_ARGB32) {
-                QTextStream(stdout) << "INFO : " << fi.fileName()
-                    << ": converting " << fi.fileName()
-                    << " from " << formatToString(inputImage.format())
-                    << " to ARGB32\n";
-                inputImage = inputImage.convertToFormat(QImage::Format_ARGB32);
+            QImage::Format inputFormat = preferredFormat(inputImage.format());
+            QImage::Format expFormat = preferredFormat(expImage.format());
+            QImage::Format cmpFormat = inputFormat == expFormat ? inputFormat : QImage::Format_ARGB32;
+
+            if (inputImage.format() != cmpFormat) {
+                QTextStream(stdout) << "INFO : " << fi.fileName() << ": converting " << fi.fileName() << " from " << formatToString(inputImage.format())
+                                    << " to " << formatToString(cmpFormat) << '\n';
+                inputImage = inputImage.convertToFormat(cmpFormat);
             }
-            if (expImage.format() != QImage::Format_ARGB32) {
-                QTextStream(stdout) << "INFO : " << fi.fileName()
-                    << ": converting " << expfilename
-                    << " from " << formatToString(expImage.format())
-                    << " to ARGB32\n";
-                expImage = expImage.convertToFormat(QImage::Format_ARGB32);
+            if (expImage.format() != cmpFormat) {
+                QTextStream(stdout) << "INFO : " << fi.fileName() << ": converting " << expfilename << " from " << formatToString(expImage.format()) << " to "
+                                    << formatToString(cmpFormat) << '\n';
+                expImage = expImage.convertToFormat(cmpFormat);
             }
             if (fuzzyeq(inputImage, expImage, fuzziness)) {
                 QTextStream(stdout) << "PASS : " << fi.fileName() << "\n";
                 ++passed;
             } else {
-                QTextStream(stdout) << "FAIL : " << fi.fileName()
-                    << ": differs from " << expfilename << "\n";
-                writeImageData("expected data",
-                               fi.fileName() + QLatin1String("-expected.data"),
-                               expImage);
-                writeImageData("actual data",
-                               fi.fileName() + QLatin1String("-actual.data"),
-                               inputImage);
+                QTextStream(stdout) << "FAIL : " << fi.fileName() << ": differs from " << expfilename << "\n";
+                writeImageData("expected data", fi.fileName() + QLatin1String("-expected.data"), expImage);
+                writeImageData("actual data", fi.fileName() + QLatin1String("-actual.data"), inputImage);
                 ++failed;
             }
         }
     }
 
-    QTextStream(stdout) << "Totals: "
-        << passed << " passed, "
-        << failed << " failed\n";
+    QTextStream(stdout) << "Totals: " << passed << " passed, " << failed << " failed\n";
     QTextStream(stdout) << "********* "
-        << "Finished basic read tests for "
-        << suffix << " images *********\n";
+                        << "Finished basic read tests for " << suffix << " images *********\n";
 
     return failed == 0 ? 0 : 1;
 }

autotests/writetest.cpp

@@ -1,23 +1,8 @@
 /*
- * Copyright 2014  Alex Merry <alex.merry@kdemail.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) version 3, or any
- * later version accepted by the membership of KDE e.V. (or its
- * successor approved by the membership of KDE e.V.), which shall
- * act as a proxy defined in Section 6 of version 3 of the license.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library.  If not, see
- * <http://www.gnu.org/licenses/>.
- */
+    SPDX-FileCopyrightText: 2014 Alex Merry <alex.merry@kdemail.net>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
 
 #include <stdio.h>
 
@@ -31,9 +16,12 @@
 #include <QImageWriter>
 #include <QTextStream>
 
-int main(int argc, char ** argv)
+#include "fuzzyeq.cpp"
+
+int main(int argc, char **argv)
 {
     QCoreApplication app(argc, argv);
+    QCoreApplication::removeLibraryPath(QStringLiteral(PLUGIN_DIR));
     QCoreApplication::addLibraryPath(QStringLiteral(PLUGIN_DIR));
     QCoreApplication::setApplicationName(QStringLiteral("readtest"));
     QCoreApplication::setApplicationVersion(QStringLiteral("1.0.0"));
@@ -43,10 +31,15 @@ int main(int argc, char ** argv)
     parser.addHelpOption();
     parser.addVersionOption();
     parser.addPositionalArgument(QStringLiteral("format"), QStringLiteral("format to test."));
-    QCommandLineOption lossless(
-        QStringList() << QStringLiteral("l") << QStringLiteral("lossless"),
-        QStringLiteral("Check that reading back the data gives the same image."));
+    QCommandLineOption lossless(QStringList() << QStringLiteral("l") << QStringLiteral("lossless"),
+                                QStringLiteral("Check that reading back the data gives the same image."));
+    QCommandLineOption ignoreDataCheck({QStringLiteral("no-data-check")}, QStringLiteral("Don't check that write data is exactly the same."));
+    QCommandLineOption fuzz(QStringList() << QStringLiteral("f") << QStringLiteral("fuzz"),
+                            QStringLiteral("Allow for some deviation in ARGB data."),
+                            QStringLiteral("max"));
     parser.addOption(lossless);
+    parser.addOption(ignoreDataCheck);
+    parser.addOption(fuzz);
 
     parser.process(app);
 
@@ -59,78 +52,91 @@ int main(int argc, char ** argv)
         parser.showHelp(1);
     }
 
+    uchar fuzziness = 0;
+    if (parser.isSet(fuzz)) {
+        bool ok;
+        uint fuzzarg = parser.value(fuzz).toUInt(&ok);
+        if (!ok || fuzzarg > 255) {
+            QTextStream(stderr) << "Error: max fuzz argument must be a number between 0 and 255\n";
+            parser.showHelp(1);
+        }
+        fuzziness = uchar(fuzzarg);
+    }
+
     QString suffix = args.at(0);
     QByteArray format = suffix.toLatin1();
 
     QDir imgdir(QStringLiteral(IMAGEDIR));
-    imgdir.setNameFilters(QStringList(QLatin1String("*.") + suffix));
+    if (parser.isSet(ignoreDataCheck)) {
+        imgdir.setNameFilters({QLatin1String("*.png")});
+    } else {
+        imgdir.setNameFilters(QStringList(QLatin1String("*.") + suffix));
+    }
     imgdir.setFilter(QDir::Files);
 
     int passed = 0;
     int failed = 0;
 
     QTextStream(stdout) << "********* "
-        << "Starting basic write tests for "
-        << suffix << " images *********\n";
-
-    foreach (QFileInfo fi, imgdir.entryInfoList()) {
-        int suffixPos = fi.filePath().count() - suffix.count();
-        QString pngfile = fi.filePath().replace(suffixPos, suffix.count(), "png");
+                        << "Starting basic write tests for " << suffix << " images *********\n";
+    const QFileInfoList lstImgDir = imgdir.entryInfoList();
+    for (const QFileInfo &fi : lstImgDir) {
+        QString pngfile;
+        if (parser.isSet(ignoreDataCheck)) {
+            pngfile = fi.filePath();
+        } else {
+            int suffixPos = fi.filePath().count() - suffix.count();
+            pngfile = fi.filePath().replace(suffixPos, suffix.count(), QStringLiteral("png"));
+        }
         QString pngfilename = QFileInfo(pngfile).fileName();
 
         QImageReader pngReader(pngfile, "png");
         QImage pngImage;
         if (!pngReader.read(&pngImage)) {
-            QTextStream(stdout) << "ERROR: " << fi.fileName()
-                << ": could not load " << pngfilename
-                << ": " << pngReader.errorString()
-                << "\n";
+            QTextStream(stdout) << "ERROR: " << fi.fileName() << ": could not load " << pngfilename << ": " << pngReader.errorString() << "\n";
             ++failed;
             continue;
         }
 
-        QFile expFile(fi.filePath());
-        if (!expFile.open(QIODevice::ReadOnly)) {
-            QTextStream(stdout) << "ERROR: " << fi.fileName()
-                << ": could not open " << fi.fileName()
-                << ": " << expFile.errorString()
-                << "\n";
-            ++failed;
-            continue;
-        }
-        QByteArray expData = expFile.readAll();
-        if (expData.isEmpty()) {
-            // check if there was actually anything to read
-            expFile.reset();
-            char buf[1];
-            qint64 result = expFile.read(buf, 1);
-            if (result < 0) {
-                QTextStream(stdout) << "ERROR: " << fi.fileName()
-                    << ": could not load " << fi.fileName()
-                    << ": " << expFile.errorString()
-                    << "\n";
-                ++failed;
-                continue;
-            }
-        }
-
         QByteArray writtenData;
         {
             QBuffer buffer(&writtenData);
             QImageWriter imgWriter(&buffer, format.constData());
+            if (parser.isSet(lossless)) {
+                imgWriter.setQuality(100);
+            }
             if (!imgWriter.write(pngImage)) {
-                QTextStream(stdout) << "FAIL : " << fi.fileName()
-                    << ": failed to write image data\n";
+                QTextStream(stdout) << "FAIL : " << fi.fileName() << ": failed to write image data\n";
                 ++failed;
                 continue;
             }
         }
 
-        if (expData != writtenData) {
-            QTextStream(stdout) << "FAIL : " << fi.fileName()
-                << ": written data differs from " << fi.fileName() << "\n";
-            ++failed;
-            continue;
+        if (!parser.isSet(ignoreDataCheck)) {
+            QFile expFile(fi.filePath());
+            if (!expFile.open(QIODevice::ReadOnly)) {
+                QTextStream(stdout) << "ERROR: " << fi.fileName() << ": could not open " << fi.fileName() << ": " << expFile.errorString() << "\n";
+                ++failed;
+                continue;
+            }
+            QByteArray expData = expFile.readAll();
+            if (expData.isEmpty()) {
+                // check if there was actually anything to read
+                expFile.reset();
+                char buf[1];
+                qint64 result = expFile.read(buf, 1);
+                if (result < 0) {
+                    QTextStream(stdout) << "ERROR: " << fi.fileName() << ": could not load " << fi.fileName() << ": " << expFile.errorString() << "\n";
+                    ++failed;
+                    continue;
+                }
+            }
+
+            if (expData != writtenData) {
+                QTextStream(stdout) << "FAIL : " << fi.fileName() << ": written data differs from " << fi.fileName() << "\n";
+                ++failed;
+                continue;
+            }
         }
 
         QImage reReadImage;
@@ -138,8 +144,7 @@ int main(int argc, char ** argv)
             QBuffer buffer(&writtenData);
             QImageReader imgReader(&buffer, format.constData());
             if (!imgReader.read(&reReadImage)) {
-                QTextStream(stdout) << "FAIL : " << fi.fileName()
-                    << ": could not read back the written data\n";
+                QTextStream(stdout) << "FAIL : " << fi.fileName() << ": could not read back the written data\n";
                 ++failed;
                 continue;
             }
@@ -147,9 +152,18 @@ int main(int argc, char ** argv)
         }
 
         if (parser.isSet(lossless)) {
-            if (pngImage != reReadImage) {
-                QTextStream(stdout) << "FAIL : " << fi.fileName()
-                    << ": re-reading the data resulted in a different image\n";
+            if (!fuzzyeq(pngImage, reReadImage, fuzziness)) {
+                QTextStream(stdout) << "FAIL : " << fi.fileName() << ": re-reading the data resulted in a different image\n";
+                if (pngImage.size() == reReadImage.size()) {
+                    for (int i = 0; i < pngImage.width(); ++i) {
+                        for (int j = 0; j < pngImage.height(); ++j) {
+                            if (pngImage.pixel(i, j) != reReadImage.pixel(i, j)) {
+                                QTextStream(stdout) << "Pixel is different " << i << ',' << j << ' ' << pngImage.pixel(i, j) << ' ' << reReadImage.pixel(i, j)
+                                                    << '\n';
+                            }
+                        }
+                    }
+                }
                 ++failed;
                 continue;
             }
@@ -159,12 +173,9 @@ int main(int argc, char ** argv)
         ++passed;
     }
 
-    QTextStream(stdout) << "Totals: "
-        << passed << " passed, "
-        << failed << " failed\n";
+    QTextStream(stdout) << "Totals: " << passed << " passed, " << failed << " failed\n";
     QTextStream(stdout) << "********* "
-        << "Finished basic write tests for "
-        << suffix << " images *********\n";
+                        << "Finished basic write tests for " << suffix << " images *********\n";
 
     return failed == 0 ? 0 : 1;
 }

metainfo.yaml

@@ -1,12 +1,18 @@
 maintainer: alexmerry
-description: Plugins to allow QImage to support extra file formats
-tier: 1
+description: Image format plugins for Qt
+tier: 2
 type: functional
 platforms:
     - name: Linux
-    - name: MacOSX
+    - name: FreeBSD
+    - name: macOS
     - name: Windows
       note: No EPS support on Windows
+    - name: Android
 portingAid: false
 deprecated: false
 release: true
+
+public_lib: true
+group: Frameworks
+subgroup: Tier 2

src/imageformats/CMakeLists.txt

@@ -2,104 +2,138 @@
 
 ##################################
 
-add_library(kimg_dds MODULE dds.cpp)
-target_link_libraries(kimg_dds Qt5::Gui)
+function(kimageformats_add_plugin plugin)
+    set(options)
+    set(multiValueArgs SOURCES)
+    cmake_parse_arguments(KIF_ADD_PLUGIN "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+    if(NOT KIF_ADD_PLUGIN_SOURCES)
+        message(FATAL_ERROR "kimageformats_add_plugin called without SOURCES parameter")
+    endif()
 
-install(TARGETS kimg_dds  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES dds.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+    add_library(${plugin} MODULE ${KIF_ADD_PLUGIN_SOURCES})
+    set_target_properties(${plugin} PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/imageformats")
+    target_link_libraries(${plugin} Qt${QT_MAJOR_VERSION}::Gui)
+    install(TARGETS ${plugin} DESTINATION ${KDE_INSTALL_QTPLUGINDIR}/imageformats)
+endfunction()
+
+##################################
+
+kimageformats_add_plugin(kimg_ani SOURCES ani.cpp)
+install(FILES ani.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+##################################
+
+if (TARGET avif)
+    kimageformats_add_plugin(kimg_avif SOURCES "avif.cpp")
+    target_link_libraries(kimg_avif "avif")
+    install(FILES avif.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+endif()
+
+##################################
+
+install(FILES dds-qt.desktop RENAME dds.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
 if (BUILD_EPS_PLUGIN)
-    if (Qt5PrintSupport_FOUND)
-        add_library(kimg_eps MODULE eps.cpp)
-        target_link_libraries(kimg_eps  Qt5::Gui Qt5::PrintSupport)
-
-        install(TARGETS kimg_eps  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-        install(FILES eps.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+    if (TARGET Qt${QT_MAJOR_VERSION}::PrintSupport)
+        kimageformats_add_plugin(kimg_eps SOURCES eps.cpp)
+        target_link_libraries(kimg_eps Qt${QT_MAJOR_VERSION}::PrintSupport)
+        install(FILES eps.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
     endif()
 endif()
 
 ##################################
 
-check_include_files(sys/types.h   HAVE_SYS_TYPES_H)
-check_include_files(stdint.h      HAVE_STDINT_H)
-configure_file(config-jp2.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-jp2.h)
-
-if(JASPER_FOUND)
-    add_library(kimg_jp2 MODULE jp2.cpp)
-    target_compile_options(kimg_jp2 PRIVATE ${JASPER_DEFINITIONS})
-    target_include_directories(kimg_jp2 PRIVATE ${JASPER_INCLUDE_DIR})
-    target_link_libraries(kimg_jp2  Qt5::Gui ${JASPER_LIBRARIES})
-
-    install(TARGETS kimg_jp2  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-    install(FILES jp2.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
-endif()
+# need this for Qt's version of the plugin
+install(FILES jp2.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
 if(OpenEXR_FOUND)
-    add_library(kimg_exr MODULE exr.cpp)
-    target_link_libraries(kimg_exr Qt5::Gui OpenEXR::IlmImf)
+    kimageformats_add_plugin(kimg_exr SOURCES exr.cpp)
+    if(TARGET OpenEXR::OpenEXR)
+        target_link_libraries(kimg_exr OpenEXR::OpenEXR)
+    else()
+        if(OpenEXR_VERSION_STRING VERSION_LESS 2.3.0)
+            # Older OpenEXR versions use dynamic exception specifications, so
+            # cannot use C++17 with them
+            set_target_properties(kimg_exr PROPERTIES CXX_STANDARD 14)
+        endif()
+        target_link_libraries(kimg_exr OpenEXR::IlmImf)
+    endif()
     kde_target_enable_exceptions(kimg_exr PRIVATE)
 
-    install(TARGETS kimg_exr  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-    install(FILES exr.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+    install(FILES exr.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 endif()
 
 ##################################
 
-add_library(kimg_pcx MODULE pcx.cpp)
-target_link_libraries(kimg_pcx  Qt5::Gui)
-
-install(TARGETS kimg_pcx  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES pcx.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+kimageformats_add_plugin(kimg_hdr SOURCES hdr.cpp)
+install(FILES hdr.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
-add_library(kimg_pic MODULE pic.cpp)
-target_link_libraries(kimg_pic Qt5::Gui)
-
-install(TARGETS kimg_pic  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES pic.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+if (LibHeif_FOUND)
+    kimageformats_add_plugin(kimg_heif SOURCES heif.cpp)
+    target_link_libraries(kimg_heif PkgConfig::LibHeif)
+    kde_target_enable_exceptions(kimg_heif PRIVATE)
+    install(FILES heif.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+endif()
 
 ##################################
 
-add_library(kimg_psd MODULE psd.cpp)
-target_link_libraries(kimg_psd Qt5::Gui)
-
-install(TARGETS kimg_psd  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES psd.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+if (LibJXL_FOUND AND LibJXLThreads_FOUND)
+    kimageformats_add_plugin(kimg_jxl SOURCES jxl.cpp)
+    target_link_libraries(kimg_jxl PkgConfig::LibJXL PkgConfig::LibJXLThreads)
+    install(FILES jxl.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+endif()
 
 ##################################
 
-add_library(kimg_ras MODULE ras.cpp)
-target_link_libraries(kimg_ras  Qt5::Gui)
-
-install(TARGETS kimg_ras  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES ras.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+kimageformats_add_plugin(kimg_pcx SOURCES pcx.cpp)
+install(FILES pcx.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
-add_library(kimg_rgb MODULE rgb.cpp)
-target_link_libraries(kimg_rgb  Qt5::Gui)
-
-install(TARGETS kimg_rgb  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES rgb.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+kimageformats_add_plugin(kimg_pic SOURCES pic.cpp)
+install(FILES pic.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
-add_library(kimg_tga MODULE tga.cpp)
-target_link_libraries(kimg_tga  Qt5::Gui)
-
-install(TARGETS kimg_tga  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES tga.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+kimageformats_add_plugin(kimg_psd SOURCES psd.cpp)
+install(FILES psd.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
 ##################################
 
-add_library(kimg_xcf MODULE xcf.cpp)
-target_link_libraries(kimg_xcf Qt5::Gui)
+kimageformats_add_plugin(kimg_ras SOURCES ras.cpp)
+install(FILES ras.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
 
-install(TARGETS kimg_xcf  DESTINATION ${QT_PLUGIN_INSTALL_DIR}/imageformats/)
-install(FILES xcf.desktop DESTINATION ${SERVICES_INSTALL_DIR}/qimageioplugins/)
+##################################
 
+kimageformats_add_plugin(kimg_rgb SOURCES rgb.cpp)
+install(FILES rgb.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+##################################
+
+kimageformats_add_plugin(kimg_tga SOURCES tga.cpp)
+install(FILES tga.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+##################################
+
+kimageformats_add_plugin(kimg_xcf SOURCES xcf.cpp)
+install(FILES xcf.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+##################################
+
+if (KF5Archive_FOUND)
+
+    kimageformats_add_plugin(kimg_kra SOURCES kra.cpp)
+    target_link_libraries(kimg_kra KF5::Archive)
+    install(FILES kra.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+    kimageformats_add_plugin(kimg_ora SOURCES ora.cpp)
+    target_link_libraries(kimg_ora KF5::Archive)
+    install(FILES ora.desktop DESTINATION ${KDE_INSTALL_KSERVICESDIR}/qimageioplugins/)
+
+endif()

src/imageformats/ani.cpp

@@ -0,0 +1,569 @@
+/*
+    SPDX-FileCopyrightText: 2020 Kai Uwe Broulik <kde@broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "ani_p.h"
+
+#include <QDebug>
+#include <QImage>
+#include <QScopeGuard>
+#include <QVariant>
+#include <QtEndian>
+
+#include <cstring>
+
+namespace
+{
+struct ChunkHeader {
+    char magic[4];
+    quint32_le size;
+};
+
+struct AniHeader {
+    quint32_le cbSize;
+    quint32_le nFrames; // number of actual frames in the file
+    quint32_le nSteps; // number of logical images
+    quint32_le iWidth;
+    quint32_le iHeight;
+    quint32_le iBitCount;
+    quint32_le nPlanes;
+    quint32_le iDispRate;
+    quint32_le bfAttributes; // attributes (0 = bitmap images, 1 = ico/cur, 3 = "seq" block available)
+};
+
+struct CurHeader {
+    quint16_le wReserved; // always 0
+    quint16_le wResID; // always 2
+    quint16_le wNumImages;
+};
+
+struct CursorDirEntry {
+    quint8 bWidth;
+    quint8 bHeight;
+    quint8 bColorCount;
+    quint8 bReserved; // always 0
+    quint16_le wHotspotX;
+    quint16_le wHotspotY;
+    quint32_le dwBytesInImage;
+    quint32_le dwImageOffset;
+};
+
+} // namespace
+
+ANIHandler::ANIHandler() = default;
+
+bool ANIHandler::canRead() const
+{
+    if (canRead(device())) {
+        setFormat("ani");
+        return true;
+    }
+
+    // Check if there's another frame coming
+    const QByteArray nextFrame = device()->peek(sizeof(ChunkHeader));
+    if (nextFrame.size() == sizeof(ChunkHeader)) {
+        const auto *header = reinterpret_cast<const ChunkHeader *>(nextFrame.data());
+        if (qstrncmp(header->magic, "icon", sizeof(header->magic)) == 0 && header->size > 0) {
+            setFormat("ani");
+            return true;
+        }
+    }
+
+    return false;
+}
+
+bool ANIHandler::read(QImage *outImage)
+{
+    if (!ensureScanned()) {
+        return false;
+    }
+
+    if (device()->pos() < m_firstFrameOffset) {
+        device()->seek(m_firstFrameOffset);
+    }
+
+    const QByteArray frameType = device()->read(4);
+    if (frameType != "icon") {
+        return false;
+    }
+
+    const QByteArray frameSizeData = device()->read(sizeof(quint32_le));
+    if (frameSizeData.count() != sizeof(quint32_le)) {
+        return false;
+    }
+
+    const auto frameSize = *(reinterpret_cast<const quint32_le *>(frameSizeData.data()));
+    if (!frameSize) {
+        return false;
+    }
+
+    const QByteArray frameData = device()->read(frameSize);
+
+    const bool ok = outImage->loadFromData(frameData, "cur");
+
+    ++m_currentImageNumber;
+
+    // When we have a custom image sequence, seek to before the frame that would follow
+    if (!m_imageSequence.isEmpty()) {
+        if (m_currentImageNumber < m_imageSequence.count()) {
+            const int nextFrame = m_imageSequence.at(m_currentImageNumber);
+            if (nextFrame < 0 || nextFrame >= m_frameOffsets.count()) {
+                return false;
+            }
+            const auto nextOffset = m_frameOffsets.at(nextFrame);
+            device()->seek(nextOffset);
+        } else if (m_currentImageNumber == m_imageSequence.count()) {
+            const auto endOffset = m_frameOffsets.last();
+            if (device()->pos() != endOffset) {
+                device()->seek(endOffset);
+            }
+        }
+    }
+
+    return ok;
+}
+
+int ANIHandler::currentImageNumber() const
+{
+    if (!ensureScanned()) {
+        return 0;
+    }
+    return m_currentImageNumber;
+}
+
+int ANIHandler::imageCount() const
+{
+    if (!ensureScanned()) {
+        return 0;
+    }
+    return m_imageCount;
+}
+
+bool ANIHandler::jumpToImage(int imageNumber)
+{
+    if (!ensureScanned()) {
+        return false;
+    }
+
+    if (imageNumber < 0) {
+        return false;
+    }
+
+    if (imageNumber == m_currentImageNumber) {
+        return true;
+    }
+
+    // If we have a custom image sequence we have a index of frames we can jump to
+    if (!m_imageSequence.isEmpty()) {
+        if (imageNumber >= m_imageSequence.count()) {
+            return false;
+        }
+
+        const int targetFrame = m_imageSequence.at(imageNumber);
+
+        const auto targetOffset = m_frameOffsets.value(targetFrame, -1);
+
+        if (device()->seek(targetOffset)) {
+            m_currentImageNumber = imageNumber;
+            return true;
+        }
+
+        return false;
+    }
+
+    if (imageNumber >= m_frameCount) {
+        return false;
+    }
+
+    // otherwise we need to jump from frame to frame
+    const auto oldPos = device()->pos();
+
+    if (imageNumber < m_currentImageNumber) {
+        // start from the beginning
+        if (!device()->seek(m_firstFrameOffset)) {
+            return false;
+        }
+    }
+
+    while (m_currentImageNumber < imageNumber) {
+        if (!jumpToNextImage()) {
+            device()->seek(oldPos);
+            return false;
+        }
+    }
+
+    m_currentImageNumber = imageNumber;
+    return true;
+}
+
+bool ANIHandler::jumpToNextImage()
+{
+    if (!ensureScanned()) {
+        return false;
+    }
+
+    // If we have a custom image sequence we have a index of frames we can jump to
+    // Delegate to jumpToImage
+    if (!m_imageSequence.isEmpty()) {
+        return jumpToImage(m_currentImageNumber + 1);
+    }
+
+    if (device()->pos() < m_firstFrameOffset) {
+        if (!device()->seek(m_firstFrameOffset)) {
+            return false;
+        }
+    }
+
+    const QByteArray nextFrame = device()->peek(sizeof(ChunkHeader));
+    if (nextFrame.size() != sizeof(ChunkHeader)) {
+        return false;
+    }
+
+    const auto *header = reinterpret_cast<const ChunkHeader *>(nextFrame.data());
+    if (qstrncmp(header->magic, "icon", sizeof(header->magic)) != 0) {
+        return false;
+    }
+
+    const qint64 seekBy = sizeof(ChunkHeader) + header->size;
+
+    if (!device()->seek(device()->pos() + seekBy)) {
+        return false;
+    }
+
+    ++m_currentImageNumber;
+    return true;
+}
+
+int ANIHandler::loopCount() const
+{
+    if (!ensureScanned()) {
+        return 0;
+    }
+    return -1;
+}
+
+int ANIHandler::nextImageDelay() const
+{
+    if (!ensureScanned()) {
+        return 0;
+    }
+
+    int rate = m_displayRate;
+
+    if (!m_displayRates.isEmpty()) {
+        int previousImage = m_currentImageNumber - 1;
+        if (previousImage < 0) {
+            previousImage = m_displayRates.count() - 1;
+        }
+        rate = m_displayRates.at(previousImage);
+    }
+
+    return rate * 1000 / 60;
+}
+
+bool ANIHandler::supportsOption(ImageOption option) const
+{
+    return option == Size || option == Name || option == Description || option == Animation;
+}
+
+QVariant ANIHandler::option(ImageOption option) const
+{
+    if (!supportsOption(option) || !ensureScanned()) {
+        return QVariant();
+    }
+
+    switch (option) {
+    case QImageIOHandler::Size:
+        return m_size;
+    // TODO QImageIOHandler::Format
+    // but both iBitCount in AniHeader and bColorCount are just zero most of the time
+    // so one would probably need to traverse even further down into IcoHeader and IconDirEntry...
+    // but Qt's ICO/CUR handler always seems to give us a ARB
+    case QImageIOHandler::Name:
+        return m_name;
+    case QImageIOHandler::Description: {
+        QString description;
+        if (!m_name.isEmpty()) {
+            description += QStringLiteral("Title: %1\n\n").arg(m_name);
+        }
+        if (!m_artist.isEmpty()) {
+            description += QStringLiteral("Author: %1\n\n").arg(m_artist);
+        }
+        return description;
+    }
+
+    case QImageIOHandler::Animation:
+        return true;
+    default:
+        break;
+    }
+
+    return QVariant();
+}
+
+bool ANIHandler::ensureScanned() const
+{
+    if (m_scanned) {
+        return true;
+    }
+
+    if (device()->isSequential()) {
+        return false;
+    }
+
+    auto *mutableThis = const_cast<ANIHandler *>(this);
+
+    const auto oldPos = device()->pos();
+    auto cleanup = qScopeGuard([this, oldPos] {
+        device()->seek(oldPos);
+    });
+
+    device()->seek(0);
+
+    const QByteArray riffIntro = device()->read(4);
+    if (riffIntro != "RIFF") {
+        return false;
+    }
+
+    const auto riffSizeData = device()->read(sizeof(quint32_le));
+    if (riffSizeData.size() != sizeof(quint32_le)) {
+        return false;
+    }
+    const auto riffSize = *(reinterpret_cast<const quint32_le *>(riffSizeData.data()));
+    // TODO do a basic sanity check if the size is enough to hold some metadata and a frame?
+    if (riffSize == 0) {
+        return false;
+    }
+
+    mutableThis->m_displayRates.clear();
+    mutableThis->m_imageSequence.clear();
+
+    while (device()->pos() < riffSize) {
+        const QByteArray chunkId = device()->read(4);
+        if (chunkId.length() != 4) {
+            return false;
+        }
+
+        if (chunkId == "ACON") {
+            continue;
+        }
+
+        const QByteArray chunkSizeData = device()->read(sizeof(quint32_le));
+        if (chunkSizeData.length() != sizeof(quint32_le)) {
+            return false;
+        }
+        auto chunkSize = *(reinterpret_cast<const quint32_le *>(chunkSizeData.data()));
+
+        if (chunkId == "anih") {
+            if (chunkSize != sizeof(AniHeader)) {
+                qWarning() << "anih chunk size does not match ANIHEADER size";
+                return false;
+            }
+
+            const QByteArray anihData = device()->read(sizeof(AniHeader));
+            if (anihData.size() != sizeof(AniHeader)) {
+                return false;
+            }
+
+            auto *aniHeader = reinterpret_cast<const AniHeader *>(anihData.data());
+
+            // The size in the ani header is usually 0 unfortunately,
+            // so we'll also check the first frame for its size further below
+            mutableThis->m_size = QSize(aniHeader->iWidth, aniHeader->iHeight);
+            mutableThis->m_frameCount = aniHeader->nFrames;
+            mutableThis->m_imageCount = aniHeader->nSteps;
+            mutableThis->m_displayRate = aniHeader->iDispRate;
+        } else if (chunkId == "rate" || chunkId == "seq ") {
+            const QByteArray data = device()->read(chunkSize);
+            if (static_cast<quint32_le>(data.size()) != chunkSize || data.size() % sizeof(quint32_le) != 0) {
+                return false;
+            }
+
+            // TODO should we check that the number of rate entries matches nSteps?
+            auto *dataPtr = data.data();
+            QVector<int> list;
+            for (int i = 0; i < data.count(); i += sizeof(quint32_le)) {
+                const auto entry = *(reinterpret_cast<const quint32_le *>(dataPtr + i));
+                list.append(entry);
+            }
+
+            if (chunkId == "rate") {
+                // should we check that the number of rate entries matches nSteps?
+                mutableThis->m_displayRates = list;
+            } else if (chunkId == "seq ") {
+                // Check if it's just an ascending sequence, don't bother with it then
+                bool isAscending = true;
+                for (int i = 0; i < list.count(); ++i) {
+                    if (list.at(i) != i) {
+                        isAscending = false;
+                        break;
+                    }
+                }
+
+                if (!isAscending) {
+                    mutableThis->m_imageSequence = list;
+                }
+            }
+            // IART and INAM are technically inside LIST->INFO but "INFO" is supposedly optional
+            // so just handle those two attributes wherever we encounter them
+        } else if (chunkId == "INAM" || chunkId == "IART") {
+            const QByteArray value = device()->read(chunkSize);
+
+            if (static_cast<quint32_le>(value.size()) != chunkSize) {
+                return false;
+            }
+
+            // DWORDs are aligned to even sizes
+            if (chunkSize % 2 != 0) {
+                device()->read(1);
+            }
+
+            // FIXME encoding
+            const QString stringValue = QString::fromLocal8Bit(value.constData(), std::strlen(value.constData()));
+            if (chunkId == "INAM") {
+                mutableThis->m_name = stringValue;
+            } else if (chunkId == "IART") {
+                mutableThis->m_artist = stringValue;
+            }
+        } else if (chunkId == "LIST") {
+            const QByteArray listType = device()->read(4);
+
+            if (listType == "INFO") {
+                // Technically would contain INAM and IART but we handle them anywhere above
+            } else if (listType == "fram") {
+                quint64 read = 0;
+                while (read < chunkSize) {
+                    const QByteArray chunkType = device()->read(4);
+                    read += 4;
+                    if (chunkType != "icon") {
+                        break;
+                    }
+
+                    if (!m_firstFrameOffset) {
+                        mutableThis->m_firstFrameOffset = device()->pos() - 4;
+                        mutableThis->m_currentImageNumber = 0;
+
+                        // If size in header isn't valid, use the first frame's size instead
+                        if (!m_size.isValid() || m_size.isEmpty()) {
+                            const auto oldPos = device()->pos();
+
+                            device()->read(sizeof(quint32_le));
+
+                            const QByteArray curHeaderData = device()->read(sizeof(CurHeader));
+                            const QByteArray cursorDirEntryData = device()->read(sizeof(CursorDirEntry));
+
+                            if (curHeaderData.length() == sizeof(CurHeader) && cursorDirEntryData.length() == sizeof(CursorDirEntry)) {
+                                auto *cursorDirEntry = reinterpret_cast<const CursorDirEntry *>(cursorDirEntryData.data());
+                                mutableThis->m_size = QSize(cursorDirEntry->bWidth, cursorDirEntry->bHeight);
+                            }
+
+                            device()->seek(oldPos);
+                        }
+
+                        // If we don't have a custom image sequence we can stop scanning right here
+                        if (m_imageSequence.isEmpty()) {
+                            break;
+                        }
+                    }
+
+                    mutableThis->m_frameOffsets.append(device()->pos() - 4);
+
+                    const QByteArray frameSizeData = device()->read(sizeof(quint32_le));
+                    if (frameSizeData.size() != sizeof(quint32_le)) {
+                        return false;
+                    }
+
+                    const auto frameSize = *(reinterpret_cast<const quint32_le *>(frameSizeData.data()));
+                    device()->seek(device()->pos() + frameSize);
+
+                    read += frameSize;
+
+                    if (m_frameOffsets.count() == m_frameCount) {
+                        // Also record the end of frame data
+                        mutableThis->m_frameOffsets.append(device()->pos() - 4);
+                        break;
+                    }
+                }
+                break;
+            }
+        }
+    }
+
+    if (m_imageCount != m_frameCount && m_imageSequence.isEmpty()) {
+        qWarning("ANIHandler: 'nSteps' is not equal to 'nFrames' but no 'seq' entries were provided");
+        return false;
+    }
+
+    if (!m_imageSequence.isEmpty() && m_imageSequence.count() != m_imageCount) {
+        qWarning("ANIHandler: count of entries in 'seq' does not match 'nSteps' in anih");
+        return false;
+    }
+
+    if (!m_displayRates.isEmpty() && m_displayRates.count() != m_imageCount) {
+        qWarning("ANIHandler: count of entries in 'rate' does not match 'nSteps' in anih");
+        return false;
+    }
+
+    if (!m_frameOffsets.isEmpty() && m_frameOffsets.count() - 1 != m_frameCount) {
+        qWarning("ANIHandler: number of actual frames does not match 'nFrames' in anih");
+        return false;
+    }
+
+    mutableThis->m_scanned = true;
+    return true;
+}
+
+bool ANIHandler::canRead(QIODevice *device)
+{
+    if (!device) {
+        qWarning("ANIHandler::canRead() called with no device");
+        return false;
+    }
+
+    const QByteArray riffIntro = device->peek(12);
+
+    if (riffIntro.length() != 12) {
+        return false;
+    }
+
+    if (!riffIntro.startsWith("RIFF")) {
+        return false;
+    }
+
+    // TODO sanity check chunk size?
+
+    if (riffIntro.mid(4 + 4, 4) != "ACON") {
+        return false;
+    }
+
+    return true;
+}
+
+QImageIOPlugin::Capabilities ANIPlugin::capabilities(QIODevice *device, const QByteArray &format) const
+{
+    if (format == "ani") {
+        return Capabilities(CanRead);
+    }
+    if (!format.isEmpty()) {
+        return {};
+    }
+    if (!device->isOpen()) {
+        return {};
+    }
+
+    Capabilities cap;
+    if (device->isReadable() && ANIHandler::canRead(device)) {
+        cap |= CanRead;
+    }
+    return cap;
+}
+
+QImageIOHandler *ANIPlugin::create(QIODevice *device, const QByteArray &format) const
+{
+    QImageIOHandler *handler = new ANIHandler;
+    handler->setDevice(device);
+    handler->setFormat(format);
+    return handler;
+}

src/imageformats/ani.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Type=Service
+X-KDE-ServiceTypes=QImageIOPlugins
+X-KDE-ImageFormat=ani
+X-KDE-MimeType=application/x-navi-animation
+X-KDE-Read=true
+X-KDE-Write=false

src/imageformats/ani.json

@@ -0,0 +1,4 @@
+{
+    "Keys": [ "ani" ],
+    "MimeTypes": [ "application/x-navi-animation" ]
+}

src/imageformats/ani_p.h

@@ -0,0 +1,68 @@
+/*
+    SPDX-FileCopyrightText: 2020 Kai Uwe Broulik <kde@broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KIMG_ANI_P_H
+#define KIMG_ANI_P_H
+
+#include <QImageIOPlugin>
+#include <QSize>
+
+class ANIHandler : public QImageIOHandler
+{
+public:
+    ANIHandler();
+
+    bool canRead() const override;
+    bool read(QImage *image) override;
+
+    int currentImageNumber() const override;
+    int imageCount() const override;
+    bool jumpToImage(int imageNumber) override;
+    bool jumpToNextImage() override;
+
+    int loopCount() const override;
+    int nextImageDelay() const override;
+
+    bool supportsOption(ImageOption option) const override;
+    QVariant option(ImageOption option) const override;
+
+    static bool canRead(QIODevice *device);
+
+private:
+    bool ensureScanned() const;
+
+    bool m_scanned = false;
+
+    int m_currentImageNumber = 0;
+
+    int m_frameCount = 0; // "physical" frames
+    int m_imageCount = 0; // logical images
+    // Stores a custom sequence of images
+    QVector<int> m_imageSequence;
+    // and the corresponding offsets where they are
+    // since we can't read the image data sequentally in this case then
+    QVector<qint64> m_frameOffsets;
+    qint64 m_firstFrameOffset = 0;
+
+    int m_displayRate = 0;
+    QVector<int> m_displayRates;
+
+    QString m_name;
+    QString m_artist;
+    QSize m_size;
+};
+
+class ANIPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "ani.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_ANI_P_H

src/imageformats/avif.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Type=Service
+X-KDE-ServiceTypes=QImageIOPlugins
+X-KDE-ImageFormat=avif
+X-KDE-MimeType=image/avif
+X-KDE-Read=true
+X-KDE-Write=true

src/imageformats/avif.json

@@ -0,0 +1,4 @@
+{
+    "Keys": [ "avif", "avifs" ],
+    "MimeTypes": [ "image/avif", "image/avif" ]
+}

src/imageformats/avif_p.h

@@ -0,0 +1,82 @@
+/*
+    AV1 Image File Format (AVIF) support for QImage.
+
+    SPDX-FileCopyrightText: 2020 Daniel Novomesky <dnovomesky@gmail.com>
+
+    SPDX-License-Identifier: BSD-2-Clause
+*/
+
+#ifndef KIMG_AVIF_P_H
+#define KIMG_AVIF_P_H
+
+#include <QByteArray>
+#include <QImage>
+#include <QImageIOPlugin>
+#include <QPointF>
+#include <QVariant>
+#include <avif/avif.h>
+#include <qimageiohandler.h>
+
+class QAVIFHandler : public QImageIOHandler
+{
+public:
+    QAVIFHandler();
+    ~QAVIFHandler();
+
+    bool canRead() const override;
+    bool read(QImage *image) override;
+    bool write(const QImage &image) override;
+
+    static bool canRead(QIODevice *device);
+
+    QVariant option(ImageOption option) const override;
+    void setOption(ImageOption option, const QVariant &value) override;
+    bool supportsOption(ImageOption option) const override;
+
+    int imageCount() const override;
+    int currentImageNumber() const override;
+    bool jumpToNextImage() override;
+    bool jumpToImage(int imageNumber) override;
+
+    int nextImageDelay() const override;
+
+    int loopCount() const override;
+
+private:
+    static QPointF CompatibleChromacity(qreal chrX, qreal chrY);
+    bool ensureParsed() const;
+    bool ensureDecoder();
+    bool decode_one_frame();
+
+    enum ParseAvifState {
+        ParseAvifError = -1,
+        ParseAvifNotParsed = 0,
+        ParseAvifSuccess = 1,
+    };
+
+    ParseAvifState m_parseState;
+    int m_quality;
+
+    uint32_t m_container_width;
+    uint32_t m_container_height;
+
+    QByteArray m_rawData;
+    avifROData m_rawAvifData;
+
+    avifDecoder *m_decoder;
+    QImage m_current_image;
+
+    bool m_must_jump_to_next_image;
+};
+
+class QAVIFPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "avif.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_AVIF_P_H

src/imageformats/config-jp2.h.cmake

@@ -1,2 +0,0 @@
-#cmakedefine01 HAVE_STDINT_H
-#cmakedefine01 HAVE_SYS_TYPES_H

src/imageformats/dds-qt.desktop

@@ -4,4 +4,4 @@ X-KDE-ServiceTypes=QImageIOPlugins
 X-KDE-ImageFormat=dds
 X-KDE-MimeType=image/x-dds
 X-KDE-Read=true
-X-KDE-Write=false
+X-KDE-Write=true

src/imageformats/dds.h

@@ -1,37 +0,0 @@
-/* This file is part of the KDE project
-   Copyright (C) 2003 Ignacio Castaño <castano@ludicon.com>
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the Lesser GNU General Public
-   License as published by the Free Software Foundation; either
-   version 2 of the License, or (at your option) any later version.
-*/
-
-#ifndef KIMG_DDS_H
-#define KIMG_DDS_H
-
-#include <QImageIOPlugin>
-
-class DDSHandler : public QImageIOHandler
-{
-public:
-    DDSHandler();
-
-    virtual bool canRead() const;
-    virtual bool read(QImage *image);
-
-    static bool canRead(QIODevice *device);
-};
-
-class DDSPlugin : public QImageIOPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "dds.json")
-
-public:
-    virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
-    virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
-};
-
-#endif // KIMG_DDS_H
-

src/imageformats/dds.json

@@ -1,4 +0,0 @@
-{
-    "Keys": [ "dds" ],
-    "MimeTypes": [ "image/x-dds" ]
-}

src/imageformats/eps.cpp

@@ -1,23 +1,26 @@
 /*
-* QImageIO Routines to read/write EPS images.
-* copyright (c) 1998 Dirk Schoenberger <dirk.schoenberger@freenet.de>
-* Copyright (c) 2013 Alex Merry <alex.merry@kdemail.net>
-* Includes code by Sven Wiegand <SWiegand@tfh-berlin.de> from KSnapshot
-*
-* This library is distributed under the conditions of the GNU LGPL.
-*/
-#include "eps.h"
+    QImageIO Routines to read/write EPS images.
+    SPDX-FileCopyrightText: 1998 Dirk Schoenberger <dirk.schoenberger@freenet.de>
+    SPDX-FileCopyrightText: 2013 Alex Merry <alex.merry@kdemail.net>
 
-#include <QDebug>
+    Includes code by Sven Wiegand <SWiegand@tfh-berlin.de> from KSnapshot
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+#include "eps_p.h"
+
+#include <QCoreApplication>
 #include <QImage>
 #include <QImageReader>
-#include <QLoggingCategory>
 #include <QPainter>
 #include <QPrinter>
 #include <QProcess>
+#include <QStandardPaths>
 #include <QTemporaryFile>
 
-Q_LOGGING_CATEGORY(EPSPLUGIN, "epsplugin")
+// logging category for this framework, default: log stuff >= warning
+Q_LOGGING_CATEGORY(EPSPLUGIN, "kf.imageformats.plugins.eps", QtWarningMsg)
+
 //#define EPS_PERFORMANCE_DEBUG 1
 
 #define BBOX_BUFLEN 200
@@ -49,19 +52,13 @@ static bool seekToCodeStart(QIODevice *io, qint64 &ps_offset, qint64 &ps_size)
                 return false;
             }
             ps_offset // Offset is in little endian
-                = qint64(((unsigned char)buf[0])
-                         + ((unsigned char)buf[1] << 8)
-                         + ((unsigned char)buf[2] << 16)
-                         + ((unsigned char)buf[3] << 24));
+                = qint64(((unsigned char)buf[0]) + ((unsigned char)buf[1] << 8) + ((unsigned char)buf[2] << 16) + ((unsigned char)buf[3] << 24));
             if (io->read(buf, 4) != 4) { // Get size of PostScript code in the MS-DOS EPS file.
                 qCDebug(EPSPLUGIN) << "cannot read size of MS-DOS EPS file";
                 return false;
             }
             ps_size // Size is in little endian
-                = qint64(((unsigned char)buf[0])
-                         + ((unsigned char)buf[1] << 8)
-                         + ((unsigned char)buf[2] << 16)
-                         + ((unsigned char)buf[3] << 24));
+                = qint64(((unsigned char)buf[0]) + ((unsigned char)buf[1] << 8) + ((unsigned char)buf[2] << 16) + ((unsigned char)buf[3] << 24));
             qCDebug(EPSPLUGIN) << "Offset: " << ps_offset << " Size: " << ps_size;
             if (!io->seek(ps_offset)) { // Get offset of PostScript code in the MS-DOS EPS file.
                 qCDebug(EPSPLUGIN) << "cannot seek in MS-DOS EPS file";
@@ -98,9 +95,11 @@ static bool bbox(QIODevice *io, int *x1, int *y1, int *x2, int *y2)
         if (strncmp(buf, BBOX, BBOX_LEN) == 0) {
             // Some EPS files have non-integer values for the bbox
             // We don't support that currently, but at least we parse it
-            float _x1, _y1, _x2, _y2;
-            if (sscanf(buf, "%*s %f %f %f %f",
-                       &_x1, &_y1, &_x2, &_y2) == 4) {
+            float _x1;
+            float _y1;
+            float _x2;
+            float _y2;
+            if (sscanf(buf, "%*s %f %f %f %f", &_x1, &_y1, &_x2, &_y2) == 4) {
                 qCDebug(EPSPLUGIN) << "BBOX: " << _x1 << " " << _y1 << " " << _x2 << " " << _y2;
                 *x1 = int(_x1);
                 *y1 = int(_y1);
@@ -132,14 +131,18 @@ bool EPSHandler::read(QImage *image)
 {
     qCDebug(EPSPLUGIN) << "starting...";
 
-    int x1, y1, x2, y2;
+    int x1;
+    int y1;
+    int x2;
+    int y2;
 #ifdef EPS_PERFORMANCE_DEBUG
     QTime dt;
     dt.start();
 #endif
 
     QIODevice *io = device();
-    qint64 ps_offset, ps_size;
+    qint64 ps_offset;
+    qint64 ps_size;
 
     // find start of PostScript code
     if (!seekToCodeStart(io, ps_offset, ps_size)) {
@@ -156,7 +159,7 @@ bool EPSHandler::read(QImage *image)
 
     QTemporaryFile tmpFile;
     if (!tmpFile.open()) {
-        qWarning() << "Could not create the temporary file" << tmpFile.fileName();
+        qCWarning(EPSPLUGIN) << "Could not create the temporary file" << tmpFile.fileName();
         return false;
     }
     qCDebug(EPSPLUGIN) << "temporary file:" << tmpFile.fileName();
@@ -174,31 +177,31 @@ bool EPSHandler::read(QImage *image)
 
     // create GS command line
 
+    const QString gsExec = QStandardPaths::findExecutable(QStringLiteral("gs"));
+    if (gsExec.isEmpty()) {
+        qCWarning(EPSPLUGIN) << "Couldn't find gs exectuable (from GhostScript) in PATH.";
+        return false;
+    }
+
     QStringList gsArgs;
-    gsArgs << QLatin1String("-sOutputFile=") + tmpFile.fileName()
-           << QStringLiteral("-q")
-           << QString(QStringLiteral("-g%1x%2")).arg(wantedWidth).arg(wantedHeight)
-           << QStringLiteral("-dSAFER")
-           << QStringLiteral("-dPARANOIDSAFER")
-           << QStringLiteral("-dNOPAUSE")
-           << QStringLiteral("-sDEVICE=ppm")
+    gsArgs << QLatin1String("-sOutputFile=") + tmpFile.fileName() << QStringLiteral("-q") << QStringLiteral("-g%1x%2").arg(wantedWidth).arg(wantedHeight)
+           << QStringLiteral("-dSAFER") << QStringLiteral("-dPARANOIDSAFER") << QStringLiteral("-dNOPAUSE") << QStringLiteral("-sDEVICE=ppm")
            << QStringLiteral("-c")
-           << QStringLiteral("0 0 moveto "
-                             "1000 0 lineto "
-                             "1000 1000 lineto "
-                             "0 1000 lineto "
-                             "1 1 254 255 div setrgbcolor fill "
-                             "0 0 0 setrgbcolor")
-           << QStringLiteral("-")
-           << QStringLiteral("-c")
-           << QStringLiteral("showpage quit");
+           << QStringLiteral(
+                  "0 0 moveto "
+                  "1000 0 lineto "
+                  "1000 1000 lineto "
+                  "0 1000 lineto "
+                  "1 1 254 255 div setrgbcolor fill "
+                  "0 0 0 setrgbcolor")
+           << QStringLiteral("-") << QStringLiteral("-c") << QStringLiteral("showpage quit");
     qCDebug(EPSPLUGIN) << "Running gs with args" << gsArgs;
 
     QProcess converter;
     converter.setProcessChannelMode(QProcess::ForwardedErrorChannel);
-    converter.start(QStringLiteral("gs"), gsArgs);
+    converter.start(gsExec, gsArgs);
     if (!converter.waitForStarted(3000)) {
-        qWarning() << "Reading EPS files requires gs (from GhostScript)";
+        qCWarning(EPSPLUGIN) << "Reading EPS files requires gs (from GhostScript)";
         return false;
     }
 
@@ -262,7 +265,8 @@ bool EPSHandler::write(const QImage &image)
     psOut.setOutputFileName(tmpFile.fileName());
     psOut.setOutputFormat(QPrinter::PdfFormat);
     psOut.setFullPage(true);
-    psOut.setPaperSize(image.size(), QPrinter::DevicePixel);
+    const double multiplier = psOut.resolution() <= 0 ? 1.0 : 72.0 / psOut.resolution();
+    psOut.setPageSize(QPageSize(image.size() * multiplier, QPageSize::Point));
 
     // painting the pixmap to the "printer" which is a file
     p.begin(&psOut);
@@ -275,29 +279,21 @@ bool EPSHandler::write(const QImage &image)
 
     // pdftops comes with Poppler and produces much smaller EPS files than GhostScript
     QStringList pdftopsArgs;
-    pdftopsArgs << QStringLiteral("-eps")
-                << tmpFile.fileName()
-                << QStringLiteral("-");
+    pdftopsArgs << QStringLiteral("-eps") << tmpFile.fileName() << QStringLiteral("-");
     qCDebug(EPSPLUGIN) << "Running pdftops with args" << pdftopsArgs;
     converter.start(QStringLiteral("pdftops"), pdftopsArgs);
 
     if (!converter.waitForStarted()) {
         // GhostScript produces huge files, and takes a long time doing so
         QStringList gsArgs;
-        gsArgs << QStringLiteral("-q") << QStringLiteral("-P-")
-               << QStringLiteral("-dNOPAUSE") << QStringLiteral("-dBATCH")
-               << QStringLiteral("-dSAFER")
-               << QStringLiteral("-sDEVICE=epswrite")
-               << QStringLiteral("-sOutputFile=-")
-               << QStringLiteral("-c")
-               << QStringLiteral("save") << QStringLiteral("pop")
-               << QStringLiteral("-f")
-               << tmpFile.fileName();
+        gsArgs << QStringLiteral("-q") << QStringLiteral("-P-") << QStringLiteral("-dNOPAUSE") << QStringLiteral("-dBATCH") << QStringLiteral("-dSAFER")
+               << QStringLiteral("-sDEVICE=epswrite") << QStringLiteral("-sOutputFile=-") << QStringLiteral("-c") << QStringLiteral("save")
+               << QStringLiteral("pop") << QStringLiteral("-f") << tmpFile.fileName();
         qCDebug(EPSPLUGIN) << "Failed to start pdftops; trying gs with args" << gsArgs;
         converter.start(QStringLiteral("gs"), gsArgs);
 
         if (!converter.waitForStarted(3000)) {
-            qWarning() << "Creating EPS files requires pdftops (from Poppler) or gs (from GhostScript)";
+            qCWarning(EPSPLUGIN) << "Creating EPS files requires pdftops (from Poppler) or gs (from GhostScript)";
             return false;
         }
     }
@@ -312,7 +308,7 @@ bool EPSHandler::write(const QImage &image)
 bool EPSHandler::canRead(QIODevice *device)
 {
     if (!device) {
-        qWarning("EPSHandler::canRead() called with no device");
+        qCWarning(EPSPLUGIN) << "EPSHandler::canRead() called with no device";
         return false;
     }
 
@@ -333,14 +329,23 @@ bool EPSHandler::canRead(QIODevice *device)
 
 QImageIOPlugin::Capabilities EPSPlugin::capabilities(QIODevice *device, const QByteArray &format) const
 {
+    // prevent bug #397040: when on app shutdown the clipboard content is to be copied to survive end of the app,
+    // QXcbIntegration looks for some QImageIOHandler to apply, querying the capabilities and picking any first.
+    // At that point this plugin no longer has its requirements e.g. to run the external process, so we have to deny.
+    // The capabilities seem to be queried on demand in Qt code and not cached, so it's fine to report based
+    // in current dynamic state
+    if (!QCoreApplication::instance()) {
+        return {};
+    }
+
     if (format == "eps" || format == "epsi" || format == "epsf") {
         return Capabilities(CanRead | CanWrite);
     }
     if (!format.isEmpty()) {
-        return 0;
+        return {};
     }
     if (!device->isOpen()) {
-        return 0;
+        return {};
     }
 
     Capabilities cap;

src/imageformats/eps.h

@@ -1,35 +0,0 @@
-/*
-* QImageIO Routines to read/write EPS images.
-* copyright (c) 1998 Dirk Schoenberger <dirk.schoenberger@freenet.de>
-*
-* This library is distributed under the conditions of the GNU LGPL.
-*/
-#ifndef KIMG_EPS_H
-#define KIMG_EPS_H
-
-#include <QImageIOPlugin>
-
-class EPSHandler : public QImageIOHandler
-{
-public:
-    EPSHandler();
-
-    virtual bool canRead() const;
-    virtual bool read(QImage *image);
-    virtual bool write(const QImage &image);
-
-    static bool canRead(QIODevice *device);
-};
-
-class EPSPlugin : public QImageIOPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "eps.json")
-
-public:
-    virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
-    virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
-};
-
-#endif // KIMG_EPS_H
-

src/imageformats/eps_p.h

@@ -0,0 +1,37 @@
+/*
+    QImageIO Routines to read/write EPS images.
+    SPDX-FileCopyrightText: 1998 Dirk Schoenberger <dirk.schoenberger@freenet.de>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+#ifndef KIMG_EPS_P_H
+#define KIMG_EPS_P_H
+
+#include <QImageIOPlugin>
+#include <QLoggingCategory>
+
+class EPSHandler : public QImageIOHandler
+{
+public:
+    EPSHandler();
+
+    bool canRead() const override;
+    bool read(QImage *image) override;
+    bool write(const QImage &image) override;
+
+    static bool canRead(QIODevice *device);
+};
+
+class EPSPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "eps.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+Q_DECLARE_LOGGING_CATEGORY(EPSPLUGIN)
+
+#endif // KIMG_EPS_P_H

src/imageformats/exr.cpp

@@ -1,50 +1,57 @@
-
 /*
-* KImageIO Routines to read (and perhaps in the future, write) images
-* in the high dynamic range EXR format.
-* Copyright (c) 2003, Brad Hards <bradh@frogmouth.net>
-*
-* This library is distributed under the conditions of the GNU LGPL.
+    KImageIO Routines to read (and perhaps in the future, write) images
+    in the high dynamic range EXR format.
+
+    SPDX-FileCopyrightText: 2003 Brad Hards <bradh@frogmouth.net>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
-#include "exr.h"
+#include "exr_p.h"
 
-#include <ImfRgbaFile.h>
-#include <ImfStandardAttributes.h>
+#include <IexThrowErrnoExc.h>
 #include <ImathBox.h>
-#include <ImfInputFile.h>
+#include <ImfArray.h>
 #include <ImfBoxAttribute.h>
 #include <ImfChannelListAttribute.h>
 #include <ImfCompressionAttribute.h>
+#include <ImfConvert.h>
 #include <ImfFloatAttribute.h>
+#include <ImfInputFile.h>
+#include <ImfInt64.h>
 #include <ImfIntAttribute.h>
 #include <ImfLineOrderAttribute.h>
+#include <ImfRgbaFile.h>
+#include <ImfStandardAttributes.h>
 #include <ImfStringAttribute.h>
 #include <ImfVecAttribute.h>
-#include <ImfArray.h>
-#include <ImfConvert.h>
 #include <ImfVersion.h>
-#include <IexThrowErrnoExc.h>
 
 #include <iostream>
 
-#include <QImage>
 #include <QDataStream>
-// #include <QDebug>
+#include <QDebug>
+#include <QImage>
 #include <QImageIOPlugin>
 
-class K_IStream: public Imf::IStream
+class K_IStream : public Imf::IStream
 {
 public:
-    K_IStream(QIODevice *dev, const QByteArray &fileName):
-        IStream(fileName.data()), m_dev(dev)
+    K_IStream(QIODevice *dev, const QByteArray &fileName)
+        : IStream(fileName.data())
+        , m_dev(dev)
     {
     }
 
-    virtual bool  read(char c[], int n);
-    virtual Imf::Int64 tellg();
-    virtual void seekg(Imf::Int64 pos);
-    virtual void clear();
+    bool read(char c[], int n) override;
+#if OPENEXR_VERSION_MAJOR > 2
+    uint64_t tellg() override;
+    void seekg(uint64_t pos) override;
+#else
+    Imf::Int64 tellg() override;
+    void seekg(Imf::Int64 pos) override;
+#endif
+    void clear() override;
 
 private:
     QIODevice *m_dev;
@@ -63,12 +70,20 @@ bool K_IStream::read(char c[], int n)
     return false;
 }
 
+#if OPENEXR_VERSION_MAJOR > 2
+uint64_t K_IStream::tellg()
+#else
 Imf::Int64 K_IStream::tellg()
+#endif
 {
     return m_dev->pos();
 }
 
+#if OPENEXR_VERSION_MAJOR > 2
+void K_IStream::seekg(uint64_t pos)
+#else
 void K_IStream::seekg(Imf::Int64 pos)
+#endif
 {
     m_dev->seek(pos);
 }
@@ -82,9 +97,12 @@ void K_IStream::clear()
  * format into the normal 32 bit pixel format. Process is from the
  * ILM code.
  */
-QRgb RgbaToQrgba(struct Imf::Rgba imagePixel)
+QRgb RgbaToQrgba(struct Imf::Rgba &imagePixel)
 {
-    float r, g, b, a;
+    float r;
+    float g;
+    float b;
+    float a;
 
     //  1) Compensate for fogging by subtracting defog
     //     from the raw pixel values.
@@ -117,30 +135,30 @@ QRgb RgbaToQrgba(struct Imf::Rgba imagePixel)
     //     maximum intensity).
     // Response: kneeLow = 0.0 (2^0.0 => 1); kneeHigh = 5.0 (2^5 =>32)
     if (r > 1.0) {
-        r = 1.0 + Imath::Math<float>::log((r - 1.0) * 0.184874 + 1) / 0.184874;
+        r = 1.0 + std::log((r - 1.0) * 0.184874 + 1) / 0.184874;
     }
     if (g > 1.0) {
-        g = 1.0 + Imath::Math<float>::log((g - 1.0) * 0.184874 + 1) / 0.184874;
+        g = 1.0 + std::log((g - 1.0) * 0.184874 + 1) / 0.184874;
     }
     if (b > 1.0) {
-        b = 1.0 + Imath::Math<float>::log((b - 1.0) * 0.184874 + 1) / 0.184874;
+        b = 1.0 + std::log((b - 1.0) * 0.184874 + 1) / 0.184874;
     }
     if (a > 1.0) {
-        a = 1.0 + Imath::Math<float>::log((a - 1.0) * 0.184874 + 1) / 0.184874;
+        a = 1.0 + std::log((a - 1.0) * 0.184874 + 1) / 0.184874;
     }
-//
-//  5) Gamma-correct the pixel values, assuming that the
-//     screen's gamma is 0.4545 (or 1/2.2).
-    r = Imath::Math<float>::pow(r, 0.4545);
-    g = Imath::Math<float>::pow(g, 0.4545);
-    b = Imath::Math<float>::pow(b, 0.4545);
-    a = Imath::Math<float>::pow(a, 0.4545);
+    //
+    //  5) Gamma-correct the pixel values, assuming that the
+    //     screen's gamma is 0.4545 (or 1/2.2).
+    r = std::pow(r, 0.4545);
+    g = std::pow(g, 0.4545);
+    b = std::pow(b, 0.4545);
+    a = std::pow(a, 0.4545);
 
-//  6) Scale the values such that pixels middle gray
-//     pixels are mapped to 84.66 (or 3.5 f-stops below
-//     the display's maximum intensity).
-//
-//  7) Clamp the values to [0, 255].
+    //  6) Scale the values such that pixels middle gray
+    //     pixels are mapped to 84.66 (or 3.5 f-stops below
+    //     the display's maximum intensity).
+    //
+    //  7) Clamp the values to [0, 255].
     return qRgba((unsigned char)(Imath::clamp(r * 84.66f, 0.f, 255.f)),
                  (unsigned char)(Imath::clamp(g * 84.66f, 0.f, 255.f)),
                  (unsigned char)(Imath::clamp(b * 84.66f, 0.f, 255.f)),
@@ -163,26 +181,28 @@ bool EXRHandler::canRead() const
 bool EXRHandler::read(QImage *outImage)
 {
     try {
-        int width, height;
+        int width;
+        int height;
 
         K_IStream istr(device(), QByteArray());
         Imf::RgbaInputFile file(istr);
         Imath::Box2i dw = file.dataWindow();
 
-        width  = dw.max.x - dw.min.x + 1;
+        width = dw.max.x - dw.min.x + 1;
         height = dw.max.y - dw.min.y + 1;
 
+        QImage image(width, height, QImage::Format_RGB32);
+        if (image.isNull()) {
+            qWarning() << "Failed to allocate image, invalid size?" << QSize(width, height);
+            return false;
+        }
+
         Imf::Array2D<Imf::Rgba> pixels;
         pixels.resizeErase(height, width);
 
         file.setFrameBuffer(&pixels[0][0] - dw.min.x - dw.min.y * width, 1, width);
         file.readPixels(dw.min.y, dw.max.y);
 
-        QImage image(width, height, QImage::Format_RGB32);
-        if (image.isNull()) {
-            return false;
-        }
-
         // somehow copy pixels into image
         for (int y = 0; y < height; y++) {
             for (int x = 0; x < width; x++) {
@@ -195,7 +215,7 @@ bool EXRHandler::read(QImage *outImage)
 
         return true;
     } catch (const std::exception &exc) {
-//      qDebug() << exc.what();
+        //      qDebug() << exc.what();
         return false;
     }
 }
@@ -218,10 +238,10 @@ QImageIOPlugin::Capabilities EXRPlugin::capabilities(QIODevice *device, const QB
         return Capabilities(CanRead);
     }
     if (!format.isEmpty()) {
-        return 0;
+        return {};
     }
     if (!device->isOpen()) {
-        return 0;
+        return {};
     }
 
     Capabilities cap;

src/imageformats/exr.h

@@ -1,37 +0,0 @@
-/*
-* QImageIO Routines to read (and perhaps in the future, write) images
-* in the high definition EXR format.
-*
-* Copyright (c) 2003, Brad Hards <bradh@frogmouth.net>
-*
-* This library is distributed under the conditions of the GNU LGPL.
-*
-*/
-
-#ifndef KIMG_EXR_H
-#define KIMG_EXR_H
-
-#include <QImageIOPlugin>
-
-class EXRHandler : public QImageIOHandler
-{
-public:
-    EXRHandler();
-
-    virtual bool canRead() const;
-    virtual bool read(QImage *outImage);
-
-    static bool canRead(QIODevice *device);
-};
-
-class EXRPlugin : public QImageIOPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "exr.json")
-
-public:
-    virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
-    virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
-};
-
-#endif // KIMG_EXR_H

src/imageformats/exr_p.h

@@ -0,0 +1,36 @@
+/*
+    QImageIO Routines to read (and perhaps in the future, write) images
+    in the high definition EXR format.
+
+    SPDX-FileCopyrightText: 2003 Brad Hards <bradh@frogmouth.net>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KIMG_EXR_P_H
+#define KIMG_EXR_P_H
+
+#include <QImageIOPlugin>
+
+class EXRHandler : public QImageIOHandler
+{
+public:
+    EXRHandler();
+
+    bool canRead() const override;
+    bool read(QImage *outImage) override;
+
+    static bool canRead(QIODevice *device);
+};
+
+class EXRPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "exr.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_EXR_P_H

src/imageformats/gimp_p.h

@@ -1,25 +1,13 @@
+/* -*- c++ -*-
+    gimp.h: Header for a Qt 3 plug-in for reading GIMP XCF image files
+    SPDX-FileCopyrightText: 2001 lignum Computing Inc. <allen@lignumcomputing.com>
+    SPDX-FileCopyrightText: 2004 Melchior FRANZ <mfranz@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
 #ifndef GIMP_H
 #define GIMP_H
-/* -*- c++ -*-
- * gimp.h: Header for a Qt 3 plug-in for reading GIMP XCF image files
- * Copyright (C) 2001 lignum Computing, Inc. <allen@lignumcomputing.com>
- * Copyright (C) 2004 Melchior FRANZ <mfranz@kde.org>
- *
- * This plug-in is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- */
 
 typedef unsigned char uchar;
 
@@ -32,13 +20,13 @@ typedef unsigned char uchar;
 // From GIMP "tile.h" v1.2
 
 const uint TILE_WIDTH = 64; //!< Width of a tile in the XCF file.
-const uint TILE_HEIGHT = 64;    //!< Height of a tile in the XCF file.
+const uint TILE_HEIGHT = 64; //!< Height of a tile in the XCF file.
 
 // From GIMP "paint_funcs.c" v1.2
 
 const int RANDOM_TABLE_SIZE = 4096; //!< Size of dissolve random number table.
 const int RANDOM_SEED = 314159265; //!< Seed for dissolve random number table.
-const double EPSILON = 0.0001;  //!< Roundup in alpha blending.
+const double EPSILON = 0.0001; //!< Roundup in alpha blending.
 
 // From GIMP "paint_funcs.h" v1.2
 
@@ -53,20 +41,9 @@ const uchar OPAQUE_OPACITY = 255; //!< Opaque value for 8-bit alpha component.
 typedef enum {
     RGB,
     GRAY,
-    INDEXED
+    INDEXED,
 } GimpImageBaseType;
 
-//! Type of individual layers in an XCF file.
-
-typedef enum {
-    RGB_GIMAGE,
-    RGBA_GIMAGE,
-    GRAY_GIMAGE,
-    GRAYA_GIMAGE,
-    INDEXED_GIMAGE,
-    INDEXEDA_GIMAGE
-} GimpImageType;
-
 // From GIMP "libgimp/gimpenums.h" v2.4
 
 //! Effect to apply when layers are merged together.
@@ -96,49 +73,6 @@ typedef enum {
     GRAIN_MERGE_MODE
 } LayerModeEffects;
 
-// From GIMP "xcf.c" v1.2
-
-//! Properties which can be stored in an XCF file.
-
-typedef enum {
-    PROP_END = 0,
-    PROP_COLORMAP = 1,
-    PROP_ACTIVE_LAYER = 2,
-    PROP_ACTIVE_CHANNEL = 3,
-    PROP_SELECTION = 4,
-    PROP_FLOATING_SELECTION = 5,
-    PROP_OPACITY = 6,
-    PROP_MODE = 7,
-    PROP_VISIBLE = 8,
-    PROP_LINKED = 9,
-    PROP_PRESERVE_TRANSPARENCY = 10,
-    PROP_APPLY_MASK = 11,
-    PROP_EDIT_MASK = 12,
-    PROP_SHOW_MASK = 13,
-    PROP_SHOW_MASKED = 14,
-    PROP_OFFSETS = 15,
-    PROP_COLOR = 16,
-    PROP_COMPRESSION = 17,
-    PROP_GUIDES = 18,
-    PROP_RESOLUTION = 19,
-    PROP_TATTOO = 20,
-    PROP_PARASITES = 21,
-    PROP_UNIT = 22,
-    PROP_PATHS = 23,
-    PROP_USER_UNIT = 24
-} PropType;
-
-// From GIMP "xcf.c" v1.2
-
-//! Compression type used in layer tiles.
-
-typedef enum {
-    COMPRESS_NONE = 0,
-    COMPRESS_RLE = 1,
-    COMPRESS_ZLIB = 2,
-    COMPRESS_FRACTAL = 3  /* Unused. */
-} CompressionType;
-
 // From GIMP "paint_funcs.c" v1.2
 
 /*!
@@ -227,9 +161,9 @@ static void RGBTOHSV(uchar &red, uchar &green, uchar &blue)
         }
     }
 
-    red   = (uchar)h;
+    red = (uchar)h;
     green = (uchar)s;
-    blue  = (uchar)v;
+    blue = (uchar)v;
 }
 
 /*!
@@ -241,9 +175,9 @@ static void RGBTOHSV(uchar &red, uchar &green, uchar &blue)
 static void HSVTORGB(uchar &hue, uchar &saturation, uchar &value)
 {
     if (saturation == 0) {
-        hue        = value;
+        hue = value;
         saturation = value;
-        //value      = value;
+        // value      = value;
     } else {
         double h = hue * 6. / 255.;
         double s = saturation / 255.;
@@ -259,34 +193,34 @@ static void HSVTORGB(uchar &hue, uchar &saturation, uchar &value)
 
         switch ((int)h) {
         case 0:
-            hue        = (uchar)(v * 255);
+            hue = (uchar)(v * 255);
             saturation = (uchar)(t * 255);
-            value      = (uchar)(p * 255);
+            value = (uchar)(p * 255);
             break;
         case 1:
-            hue        = (uchar)(q * 255);
+            hue = (uchar)(q * 255);
             saturation = (uchar)(v * 255);
-            value      = (uchar)(p * 255);
+            value = (uchar)(p * 255);
             break;
         case 2:
-            hue        = (uchar)(p * 255);
+            hue = (uchar)(p * 255);
             saturation = (uchar)(v * 255);
-            value      = (uchar)(t * 255);
+            value = (uchar)(t * 255);
             break;
         case 3:
-            hue        = (uchar)(p * 255);
+            hue = (uchar)(p * 255);
             saturation = (uchar)(q * 255);
-            value      = (uchar)(v * 255);
+            value = (uchar)(v * 255);
             break;
         case 4:
-            hue        = (uchar)(t * 255);
+            hue = (uchar)(t * 255);
             saturation = (uchar)(p * 255);
-            value      = (uchar)(v * 255);
+            value = (uchar)(v * 255);
             break;
         case 5:
-            hue        = (uchar)(v * 255);
+            hue = (uchar)(v * 255);
             saturation = (uchar)(p * 255);
-            value      = (uchar)(q * 255);
+            value = (uchar)(q * 255);
         }
     }
 }
@@ -346,9 +280,9 @@ static void RGBTOHLS(uchar &red, uchar &green, uchar &blue)
         }
     }
 
-    red   = (uchar)h;
+    red = (uchar)h;
     green = (uchar)l;
-    blue  = (uchar)s;
+    blue = (uchar)s;
 }
 
 /*!
@@ -394,8 +328,8 @@ static void HLSTORGB(uchar &hue, uchar &lightness, uchar &saturation)
     double s = saturation;
 
     if (s == 0) {
-        hue        = (uchar)l;
-        lightness  = (uchar)l;
+        hue = (uchar)l;
+        lightness = (uchar)l;
         saturation = (uchar)l;
     } else {
         double m1, m2;
@@ -408,8 +342,8 @@ static void HLSTORGB(uchar &hue, uchar &lightness, uchar &saturation)
 
         m1 = (l / 127.5) - m2;
 
-        hue        = HLSVALUE(m1, m2, h + 85);
-        lightness  = HLSVALUE(m1, m2, h);
+        hue = HLSVALUE(m1, m2, h + 85);
+        lightness = HLSVALUE(m1, m2, h);
         saturation = HLSVALUE(m1, m2, h - 85);
     }
 }

src/imageformats/hdr.cpp

@@ -1,35 +1,36 @@
-/* This file is part of the KDE project
-   Copyright (C) 2005 Christoph Hormann <chris_hormann@gmx.de>
-   Copyright (C) 2005 Ignacio Castaño <castanyo@yahoo.es>
+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2005 Christoph Hormann <chris_hormann@gmx.de>
+    SPDX-FileCopyrightText: 2005 Ignacio Castaño <castanyo@yahoo.es>
 
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the Lesser GNU General Public
-   License as published by the Free Software Foundation; either
-   version 2 of the License, or (at your option) any later version.
+    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
-#include "hdr.h"
+#include "hdr_p.h"
 
+#include <QDataStream>
 #include <QImage>
-#include <QtCore/QDataStream>
+#include <QLoggingCategory>
+#include <QRegularExpressionMatch>
 
 #include <QDebug>
 
-typedef Q_UINT8 uchar;
+typedef unsigned char uchar;
 
-namespace   // Private.
+Q_LOGGING_CATEGORY(HDRPLUGIN, "kf.imageformats.plugins.hdr", QtWarningMsg)
+
+namespace // Private.
 {
-
-#define MAXLINE     1024
-#define MINELEN     8       // minimum scanline length for encoding
-#define MAXELEN     0x7fff  // maximum scanline length for encoding
+#define MAXLINE 1024
+#define MINELEN 8 // minimum scanline length for encoding
+#define MAXELEN 0x7fff // maximum scanline length for encoding
 
 static inline uchar ClipToByte(float value)
 {
     if (value > 255.0f) {
         return 255;
     }
-    //else if (value < 0.0f) return 0;  // we know value is positive.
+    // else if (value < 0.0f) return 0;  // we know value is positive.
     return uchar(value);
 }
 
@@ -37,8 +38,8 @@ static inline uchar ClipToByte(float value)
 // if 'first' is true the first byte is already read
 static bool Read_Old_Line(uchar *image, int width, QDataStream &s)
 {
-    int  rshift = 0;
-    int  i;
+    int rshift = 0;
+    int i;
 
     while (width > 0) {
         s >> image[0];
@@ -52,7 +53,7 @@ static bool Read_Old_Line(uchar *image, int width, QDataStream &s)
 
         if ((image[0] == 1) && (image[1] == 1) && (image[2] == 1)) {
             for (i = image[3] << rshift; i > 0; i--) {
-                //memcpy(image, image-4, 4);
+                // memcpy(image, image-4, 4);
                 (uint &)image[0] = (uint &)image[0 - 4];
                 image += 4;
                 width--;
@@ -79,9 +80,7 @@ static void RGBE_To_QRgbLine(uchar *image, QRgb *scanline, int width)
             v = 1.0f / float(1 << -e);
         }
 
-        scanline[j] = qRgb(ClipToByte(float(image[0]) * v),
-                           ClipToByte(float(image[1]) * v),
-                           ClipToByte(float(image[2]) * v));
+        scanline[j] = qRgb(ClipToByte(float(image[0]) * v), ClipToByte(float(image[1]) * v), ClipToByte(float(image[2]) * v));
 
         image += 4;
     }
@@ -90,22 +89,27 @@ static void RGBE_To_QRgbLine(uchar *image, QRgb *scanline, int width)
 // Load the HDR image.
 static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &img)
 {
-    uchar val, code;
+    uchar val;
+    uchar code;
 
     // Create dst image.
-    if (!img.create(width, height, 32)) {
+    img = QImage(width, height, QImage::Format_RGB32);
+    if (img.isNull()) {
+        qCDebug(HDRPLUGIN) << "Couldn't create image with size" << width << height << "and format RGB32";
         return false;
     }
 
-    QMemArray<uchar> image(width * 4);
+    QByteArray lineArray;
+    lineArray.resize(4 * width);
+    uchar *image = (uchar *)lineArray.data();
 
     for (int cline = 0; cline < height; cline++) {
-        QRgb *scanline = (QRgb *) img.scanLine(cline);
+        QRgb *scanline = (QRgb *)img.scanLine(cline);
 
         // determine scanline type
         if ((width < MINELEN) || (MAXELEN < width)) {
-            Read_Old_Line(image.data(), width, s);
-            RGBE_To_QRgbLine(image.data(), scanline, width);
+            Read_Old_Line(image, width, s);
+            RGBE_To_QRgbLine(image, scanline, width);
             continue;
         }
 
@@ -116,9 +120,9 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
         }
 
         if (val != 2) {
-            s.device()->at(s.device()->at() - 1);
-            Read_Old_Line(image.data(), width, s);
-            RGBE_To_QRgbLine(image.data(), scanline, width);
+            s.device()->ungetChar(val);
+            Read_Old_Line(image, width, s);
+            RGBE_To_QRgbLine(image, scanline, width);
             continue;
         }
 
@@ -132,12 +136,13 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
 
         if ((image[1] != 2) || (image[2] & 128)) {
             image[0] = 2;
-            Read_Old_Line(image.data() + 4, width - 1, s);
-            RGBE_To_QRgbLine(image.data(), scanline, width);
+            Read_Old_Line(image + 4, width - 1, s);
+            RGBE_To_QRgbLine(image, scanline, width);
             continue;
         }
 
         if ((image[2] << 8 | image[3]) != width) {
+            qCDebug(HDRPLUGIN) << "Line of pixels had width" << (image[2] << 8 | image[3]) << "instead of" << width;
             return false;
         }
 
@@ -146,6 +151,7 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
             for (int j = 0; j < width;) {
                 s >> code;
                 if (s.atEnd()) {
+                    qCDebug(HDRPLUGIN) << "Truncated HDR file";
                     return false;
                 }
                 if (code > 128) {
@@ -160,7 +166,7 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
                 } else {
                     // non-run
                     while (code != 0) {
-                        s >> image[i +  j * 4];
+                        s >> image[i + j * 4];
                         j++;
                         code--;
                     }
@@ -168,7 +174,7 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
             }
         }
 
-        RGBE_To_QRgbLine(image.data(), scanline, width);
+        RGBE_To_QRgbLine(image, scanline, width);
     }
 
     return true;
@@ -176,63 +182,116 @@ static bool LoadHDR(QDataStream &s, const int width, const int height, QImage &i
 
 } // namespace
 
-Q_DECL_EXPORT void kimgio_hdr_read(QImageIO *io)
+bool HDRHandler::read(QImage *outImage)
 {
     int len;
-    char line[MAXLINE];
-    //bool validHeader = false;
-    bool validFormat = false;
+    QByteArray line(MAXLINE + 1, Qt::Uninitialized);
+    QByteArray format;
 
     // Parse header
     do {
-        len = io->ioDevice()->readLine(line, MAXLINE);
+        len = device()->readLine(line.data(), MAXLINE);
 
-        /*if (strcmp(line, "#?RADIANCE\n") == 0 || strcmp(line, "#?RGBE\n") == 0)
-        {
-            validHeader = true;
-        }*/
-        if (strcmp(line, "FORMAT=32-bit_rle_rgbe\n") == 0) {
-            validFormat = true;
+        if (line.startsWith("FORMAT=")) {
+            format = line.mid(7, len - 7 - 1 /*\n*/);
         }
 
     } while ((len > 0) && (line[0] != '\n'));
 
-    if (/*!validHeader ||*/ !validFormat) {
-        // qDebug() << "Unknown HDR format.";
-        io->setImage(0);
-        io->setStatus(-1);
-        return;
+    if (format != "32-bit_rle_rgbe") {
+        qCDebug(HDRPLUGIN) << "Unknown HDR format:" << format;
+        return false;
     }
 
-    io->ioDevice()->readLine(line, MAXLINE);
+    len = device()->readLine(line.data(), MAXLINE);
+    line.resize(len);
 
-    char s1[3], s2[3];
-    int width, height;
-    if (sscanf(line, "%2[+-XY] %d %2[+-XY] %d\n", s1, &height, s2, &width) != 4)
-        //if( sscanf(line, "-Y %d +X %d", &height, &width) < 2 )
-    {
-        // qDebug() << "Invalid HDR file.";
-        io->setImage(0);
-        io->setStatus(-1);
-        return;
+    /*
+       TODO: handle flipping and rotation, as per the spec below
+       The single resolution line consists of 4 values, a X and Y label each followed by a numerical
+       integer value. The X and Y are immediately preceded by a sign which can be used to indicate
+       flipping, the order of the X and Y indicate rotation. The standard coordinate system for
+       Radiance images would have the following resolution string -Y N +X N. This indicates that the
+       vertical axis runs down the file and the X axis is to the right (imagining the image as a
+       rectangular block of data). A -X would indicate a horizontal flip of the image. A +Y would
+       indicate a vertical flip. If the X value appears before the Y value then that indicates that
+       the image is stored in column order rather than row order, that is, it is rotated by 90 degrees.
+       The reader can convince themselves that the 8 combinations cover all the possible image orientations
+       and rotations.
+    */
+    QRegularExpression resolutionRegExp(QStringLiteral("([+\\-][XY]) ([0-9]+) ([+\\-][XY]) ([0-9]+)\n"));
+    QRegularExpressionMatch match = resolutionRegExp.match(QString::fromLatin1(line));
+    if (!match.hasMatch()) {
+        qCDebug(HDRPLUGIN) << "Invalid HDR file, the first line after the header didn't have the expected format:" << line;
+        return false;
     }
 
-    QDataStream s(io->ioDevice());
+    if ((match.captured(1).at(1) != u'Y') || (match.captured(3).at(1) != u'X')) {
+        qCDebug(HDRPLUGIN) << "Unsupported image orientation in HDR file.";
+        return false;
+    }
+
+    const int width = match.captured(4).toInt();
+    const int height = match.captured(2).toInt();
+
+    QDataStream s(device());
 
     QImage img;
     if (!LoadHDR(s, width, height, img)) {
         // qDebug() << "Error loading HDR file.";
-        io->setImage(0);
-        io->setStatus(-1);
-        return;
+        return false;
     }
 
-    io->setImage(img);
-    io->setStatus(0);
+    *outImage = img;
+    return true;
 }
 
-Q_DECL_EXPORT void kimgio_hdr_write(QImageIO *)
+HDRHandler::HDRHandler()
 {
-    // intentionally not implemented (since writing low dynamic range data to a HDR file is nonsense.)
 }
 
+bool HDRHandler::canRead() const
+{
+    if (canRead(device())) {
+        setFormat("hdr");
+        return true;
+    }
+    return false;
+}
+
+bool HDRHandler::canRead(QIODevice *device)
+{
+    if (!device) {
+        qWarning("HDRHandler::canRead() called with no device");
+        return false;
+    }
+
+    return device->peek(11) == "#?RADIANCE\n" || device->peek(7) == "#?RGBE\n";
+}
+
+QImageIOPlugin::Capabilities HDRPlugin::capabilities(QIODevice *device, const QByteArray &format) const
+{
+    if (format == "hdr") {
+        return Capabilities(CanRead);
+    }
+    if (!format.isEmpty()) {
+        return {};
+    }
+    if (!device->isOpen()) {
+        return {};
+    }
+
+    Capabilities cap;
+    if (device->isReadable() && HDRHandler::canRead(device)) {
+        cap |= CanRead;
+    }
+    return cap;
+}
+
+QImageIOHandler *HDRPlugin::create(QIODevice *device, const QByteArray &format) const
+{
+    QImageIOHandler *handler = new HDRHandler;
+    handler->setDevice(device);
+    handler->setFormat(format);
+    return handler;
+}

src/imageformats/hdr.h

@@ -1,21 +0,0 @@
-/* This file is part of the KDE project
-   Copyright (C) 2005 Christoph Hormann <chris_hormann@gmx.de>
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the Lesser GNU General Public
-   License as published by the Free Software Foundation; either
-   version 2 of the License, or (at your option) any later version.
-*/
-
-#ifndef KIMG_HDR_H
-#define KIMG_HDR_H
-
-class QImageIO;
-
-extern "C" {
-    void kimgio_hdr_read(QImageIO *);
-    void kimgio_hdr_write(QImageIO *);
-}
-
-#endif
-

src/imageformats/hdr.json

@@ -0,0 +1,4 @@
+{
+    "Keys": [ "hdr" ],
+    "MimeTypes": [ "image/x-hdr", "image/vnd.radiance" ]
+}

src/imageformats/hdr_p.h

@@ -0,0 +1,34 @@
+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2005 Christoph Hormann <chris_hormann@gmx.de>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KIMG_HDR_P_H
+#define KIMG_HDR_P_H
+
+#include <QImageIOPlugin>
+
+class HDRHandler : public QImageIOHandler
+{
+public:
+    HDRHandler();
+
+    bool canRead() const override;
+    bool read(QImage *outImage) override;
+
+    static bool canRead(QIODevice *device);
+};
+
+class HDRPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "hdr.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_HDR_P_H

src/imageformats/heif.cpp

@@ -0,0 +1,734 @@
+/*
+    High Efficiency Image File Format (HEIF) support for QImage.
+
+    SPDX-FileCopyrightText: 2020 Sirius Bakke <sirius@bakke.co>
+    SPDX-FileCopyrightText: 2021 Daniel Novomesky <dnovomesky@gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "heif_p.h"
+#include "libheif/heif_cxx.h"
+
+#include <QColorSpace>
+#include <QDebug>
+#include <QPointF>
+#include <QSysInfo>
+#include <string.h>
+
+namespace // Private.
+{
+struct HeifQIODeviceWriter : public heif::Context::Writer {
+    HeifQIODeviceWriter(QIODevice *device)
+        : m_ioDevice(device)
+    {
+    }
+
+    heif_error write(const void *data, size_t size) override
+    {
+        heif_error error;
+        error.code = heif_error_Ok;
+        error.subcode = heif_suberror_Unspecified;
+        error.message = errorOkMessage;
+
+        qint64 bytesWritten = m_ioDevice->write(static_cast<const char *>(data), size);
+
+        if (bytesWritten < static_cast<qint64>(size)) {
+            error.code = heif_error_Encoding_error;
+            error.message = QIODeviceWriteErrorMessage;
+            error.subcode = heif_suberror_Cannot_write_output_data;
+        }
+
+        return error;
+    }
+
+    static constexpr const char *errorOkMessage = "Success";
+    static constexpr const char *QIODeviceWriteErrorMessage = "Bytes written to QIODevice are smaller than input data size";
+
+private:
+    QIODevice *m_ioDevice;
+};
+
+} // namespace
+
+HEIFHandler::HEIFHandler()
+    : m_parseState(ParseHeicNotParsed)
+    , m_quality(100)
+{
+}
+
+bool HEIFHandler::canRead() const
+{
+    if (m_parseState == ParseHeicNotParsed && !canRead(device())) {
+        return false;
+    }
+
+    if (m_parseState != ParseHeicError) {
+        setFormat("heif");
+        return true;
+    }
+    return false;
+}
+
+bool HEIFHandler::read(QImage *outImage)
+{
+    if (!ensureParsed()) {
+        return false;
+    }
+
+    *outImage = m_current_image;
+    return true;
+}
+
+bool HEIFHandler::write(const QImage &image)
+{
+    if (image.format() == QImage::Format_Invalid || image.isNull()) {
+        qWarning("No image data to save");
+        return false;
+    }
+
+    int save_depth; // 8 or 10bit per channel
+    QImage::Format tmpformat; // format for temporary image
+    const bool save_alpha = image.hasAlphaChannel();
+
+    switch (image.format()) {
+    case QImage::Format_BGR30:
+    case QImage::Format_A2BGR30_Premultiplied:
+    case QImage::Format_RGB30:
+    case QImage::Format_A2RGB30_Premultiplied:
+    case QImage::Format_Grayscale16:
+    case QImage::Format_RGBX64:
+    case QImage::Format_RGBA64:
+    case QImage::Format_RGBA64_Premultiplied:
+        save_depth = 10;
+        break;
+    default:
+        if (image.depth() > 32) {
+            save_depth = 10;
+        } else {
+            save_depth = 8;
+        }
+        break;
+    }
+
+    heif_chroma chroma;
+    if (save_depth > 8) {
+        if (save_alpha) {
+            tmpformat = QImage::Format_RGBA64;
+            chroma = (QSysInfo::ByteOrder == QSysInfo::LittleEndian) ? heif_chroma_interleaved_RRGGBBAA_LE : heif_chroma_interleaved_RRGGBBAA_BE;
+        } else {
+            tmpformat = QImage::Format_RGBX64;
+            chroma = (QSysInfo::ByteOrder == QSysInfo::LittleEndian) ? heif_chroma_interleaved_RRGGBB_LE : heif_chroma_interleaved_RRGGBB_BE;
+        }
+    } else {
+        if (save_alpha) {
+            tmpformat = QImage::Format_RGBA8888;
+            chroma = heif_chroma_interleaved_RGBA;
+        } else {
+            tmpformat = QImage::Format_RGB888;
+            chroma = heif_chroma_interleaved_RGB;
+        }
+    }
+
+    const QImage tmpimage = image.convertToFormat(tmpformat);
+
+    try {
+        heif::Context ctx;
+        heif::Image heifImage;
+        heifImage.create(tmpimage.width(), tmpimage.height(), heif_colorspace_RGB, chroma);
+
+        QByteArray iccprofile = tmpimage.colorSpace().iccProfile();
+        if (iccprofile.size() > 0) {
+            std::vector<uint8_t> rawProfile(iccprofile.begin(), iccprofile.end());
+            heifImage.set_raw_color_profile(heif_color_profile_type_prof, rawProfile);
+        }
+
+        heifImage.add_plane(heif_channel_interleaved, image.width(), image.height(), save_depth);
+        int stride = 0;
+        uint8_t *const dst = heifImage.get_plane(heif_channel_interleaved, &stride);
+        size_t rowbytes;
+
+        switch (save_depth) {
+        case 10:
+            if (save_alpha) {
+                for (int y = 0; y < tmpimage.height(); y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(tmpimage.constScanLine(y));
+                    uint16_t *dest_word = reinterpret_cast<uint16_t *>(dst + (y * stride));
+                    for (int x = 0; x < tmpimage.width(); x++) {
+                        int tmp_pixelval;
+                        // R
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // G
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // B
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // A
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                    }
+                }
+            } else { // no alpha channel
+                for (int y = 0; y < tmpimage.height(); y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(tmpimage.constScanLine(y));
+                    uint16_t *dest_word = reinterpret_cast<uint16_t *>(dst + (y * stride));
+                    for (int x = 0; x < tmpimage.width(); x++) {
+                        int tmp_pixelval;
+                        // R
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // G
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // B
+                        tmp_pixelval = (int)(((float)(*src_word) / 65535.0f) * 1023.0f + 0.5f);
+                        *dest_word = qBound(0, tmp_pixelval, 1023);
+                        src_word++;
+                        dest_word++;
+                        // X
+                        src_word++;
+                    }
+                }
+            }
+            break;
+        case 8:
+            rowbytes = save_alpha ? (tmpimage.width() * 4) : (tmpimage.width() * 3);
+            for (int y = 0; y < tmpimage.height(); y++) {
+                memcpy(dst + (y * stride), tmpimage.constScanLine(y), rowbytes);
+            }
+            break;
+        default:
+            qWarning() << "Unsupported depth:" << save_depth;
+            return false;
+            break;
+        }
+
+        heif::Encoder encoder(heif_compression_HEVC);
+
+        encoder.set_lossy_quality(m_quality);
+        if (m_quality > 90) {
+            if (m_quality == 100) {
+                encoder.set_lossless(true);
+            }
+            encoder.set_string_parameter("chroma", "444");
+        }
+
+        heif::Context::EncodingOptions encodingOptions;
+        encodingOptions.save_alpha_channel = save_alpha;
+
+        if ((tmpimage.width() % 2 == 1) || (tmpimage.height() % 2 == 1)) {
+            qWarning() << "Image has odd dimension!\nUse even-numbered dimension(s) for better compatibility with other HEIF implementations.";
+            if (save_alpha) {
+                // This helps to save alpha channel when image has odd dimension
+                encodingOptions.macOS_compatibility_workaround = 0;
+            }
+        }
+
+        ctx.encode_image(heifImage, encoder, encodingOptions);
+
+        HeifQIODeviceWriter writer(device());
+
+        ctx.write(writer);
+
+    } catch (const heif::Error &err) {
+        qWarning() << "libheif error:" << err.get_message().c_str();
+        return false;
+    }
+
+    return true;
+}
+
+bool HEIFHandler::canRead(QIODevice *device)
+{
+    if (!device) {
+        qWarning("HEIFHandler::canRead() called with no device");
+        return false;
+    }
+
+    const QByteArray header = device->peek(28);
+    return HEIFHandler::isSupportedBMFFType(header);
+}
+
+bool HEIFHandler::isSupportedBMFFType(const QByteArray &header)
+{
+    if (header.size() < 28) {
+        return false;
+    }
+
+    const char *buffer = header.constData();
+    if (qstrncmp(buffer + 4, "ftyp", 4) == 0) {
+        if (qstrncmp(buffer + 8, "heic", 4) == 0) {
+            return true;
+        }
+        if (qstrncmp(buffer + 8, "heis", 4) == 0) {
+            return true;
+        }
+        if (qstrncmp(buffer + 8, "heix", 4) == 0) {
+            return true;
+        }
+
+        /* we want to avoid loading AVIF files via this plugin */
+        if (qstrncmp(buffer + 8, "mif1", 4) == 0) {
+            for (int offset = 16; offset <= 24; offset += 4) {
+                if (qstrncmp(buffer + offset, "avif", 4) == 0) {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        if (qstrncmp(buffer + 8, "mif2", 4) == 0) {
+            return true;
+        }
+        if (qstrncmp(buffer + 8, "msf1", 4) == 0) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+QVariant HEIFHandler::option(ImageOption option) const
+{
+    if (option == Quality) {
+        return m_quality;
+    }
+
+    if (!supportsOption(option) || !ensureParsed()) {
+        return QVariant();
+    }
+
+    switch (option) {
+    case Size:
+        return m_current_image.size();
+        break;
+    default:
+        return QVariant();
+        break;
+    }
+}
+
+void HEIFHandler::setOption(ImageOption option, const QVariant &value)
+{
+    switch (option) {
+    case Quality:
+        m_quality = value.toInt();
+        if (m_quality > 100) {
+            m_quality = 100;
+        } else if (m_quality < 0) {
+            m_quality = 100;
+        }
+        break;
+    default:
+        QImageIOHandler::setOption(option, value);
+        break;
+    }
+}
+
+bool HEIFHandler::supportsOption(ImageOption option) const
+{
+    return option == Quality || option == Size;
+}
+
+bool HEIFHandler::ensureParsed() const
+{
+    if (m_parseState == ParseHeicSuccess) {
+        return true;
+    }
+    if (m_parseState == ParseHeicError) {
+        return false;
+    }
+
+    HEIFHandler *that = const_cast<HEIFHandler *>(this);
+
+    return that->ensureDecoder();
+}
+bool HEIFHandler::ensureDecoder()
+{
+    if (m_parseState != ParseHeicNotParsed) {
+        if (m_parseState == ParseHeicSuccess) {
+            return true;
+        }
+        return false;
+    }
+
+    const QByteArray buffer = device()->readAll();
+    if (!HEIFHandler::isSupportedBMFFType(buffer)) {
+        m_parseState = ParseHeicError;
+        return false;
+    }
+
+    try {
+        heif::Context ctx;
+        ctx.read_from_memory_without_copy((const void *)(buffer.constData()), buffer.size());
+
+        heif::ImageHandle handle = ctx.get_primary_image_handle();
+
+        const bool hasAlphaChannel = handle.has_alpha_channel();
+        const int bit_depth = handle.get_luma_bits_per_pixel();
+        heif_chroma chroma;
+
+        QImage::Format target_image_format;
+
+        if (bit_depth == 10 || bit_depth == 12) {
+            if (hasAlphaChannel) {
+                chroma = (QSysInfo::ByteOrder == QSysInfo::LittleEndian) ? heif_chroma_interleaved_RRGGBBAA_LE : heif_chroma_interleaved_RRGGBBAA_BE;
+                target_image_format = QImage::Format_RGBA64;
+            } else {
+                chroma = (QSysInfo::ByteOrder == QSysInfo::LittleEndian) ? heif_chroma_interleaved_RRGGBB_LE : heif_chroma_interleaved_RRGGBB_BE;
+                target_image_format = QImage::Format_RGBX64;
+            }
+        } else if (bit_depth == 8) {
+            if (hasAlphaChannel) {
+                chroma = heif_chroma_interleaved_RGBA;
+                target_image_format = QImage::Format_ARGB32;
+            } else {
+                chroma = heif_chroma_interleaved_RGB;
+                target_image_format = QImage::Format_RGB32;
+            }
+        } else {
+            m_parseState = ParseHeicError;
+            if (bit_depth > 0) {
+                qWarning() << "Unsupported bit depth:" << bit_depth;
+            } else {
+                qWarning() << "Undefined bit depth.";
+            }
+            return false;
+        }
+
+        heif::Image img = handle.decode_image(heif_colorspace_RGB, chroma);
+
+        const int imageWidth = img.get_width(heif_channel_interleaved);
+        const int imageHeight = img.get_height(heif_channel_interleaved);
+
+        QSize imageSize(imageWidth, imageHeight);
+
+        if (!imageSize.isValid()) {
+            m_parseState = ParseHeicError;
+            qWarning() << "HEIC image size invalid:" << imageSize;
+            return false;
+        }
+
+        int stride = 0;
+        const uint8_t *const src = img.get_plane(heif_channel_interleaved, &stride);
+
+        if (!src || stride <= 0) {
+            m_parseState = ParseHeicError;
+            qWarning() << "HEIC data pixels information not valid!";
+            return false;
+        }
+
+        m_current_image = QImage(imageSize, target_image_format);
+        if (m_current_image.isNull()) {
+            m_parseState = ParseHeicError;
+            qWarning() << "Unable to allocate memory!";
+            return false;
+        }
+
+        switch (bit_depth) {
+        case 12:
+            if (hasAlphaChannel) {
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(src + (y * stride));
+                    uint16_t *dest_data = reinterpret_cast<uint16_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int tmpvalue;
+                        // R
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // G
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // B
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // A
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                    }
+                }
+            } else { // no alpha channel
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(src + (y * stride));
+                    uint16_t *dest_data = reinterpret_cast<uint16_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int tmpvalue;
+                        // R
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // G
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // B
+                        tmpvalue = (int)(((float)(0x0fff & (*src_word)) / 4095.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // X = 0xffff
+                        *dest_data = 0xffff;
+                        dest_data++;
+                    }
+                }
+            }
+            break;
+        case 10:
+            if (hasAlphaChannel) {
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(src + (y * stride));
+                    uint16_t *dest_data = reinterpret_cast<uint16_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int tmpvalue;
+                        // R
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // G
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // B
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // A
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                    }
+                }
+            } else { // no alpha channel
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint16_t *src_word = reinterpret_cast<const uint16_t *>(src + (y * stride));
+                    uint16_t *dest_data = reinterpret_cast<uint16_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int tmpvalue;
+                        // R
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // G
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // B
+                        tmpvalue = (int)(((float)(0x03ff & (*src_word)) / 1023.0f) * 65535.0f + 0.5f);
+                        tmpvalue = qBound(0, tmpvalue, 65535);
+                        *dest_data = (uint16_t)tmpvalue;
+                        src_word++;
+                        dest_data++;
+                        // X = 0xffff
+                        *dest_data = 0xffff;
+                        dest_data++;
+                    }
+                }
+            }
+            break;
+        case 8:
+            if (hasAlphaChannel) {
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint8_t *src_byte = src + (y * stride);
+                    uint32_t *dest_pixel = reinterpret_cast<uint32_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int red = *src_byte++;
+                        int green = *src_byte++;
+                        int blue = *src_byte++;
+                        int alpha = *src_byte++;
+                        *dest_pixel = qRgba(red, green, blue, alpha);
+                        dest_pixel++;
+                    }
+                }
+            } else { // no alpha channel
+                for (int y = 0; y < imageHeight; y++) {
+                    const uint8_t *src_byte = src + (y * stride);
+                    uint32_t *dest_pixel = reinterpret_cast<uint32_t *>(m_current_image.scanLine(y));
+                    for (int x = 0; x < imageWidth; x++) {
+                        int red = *src_byte++;
+                        int green = *src_byte++;
+                        int blue = *src_byte++;
+                        *dest_pixel = qRgb(red, green, blue);
+                        dest_pixel++;
+                    }
+                }
+            }
+            break;
+        default:
+            m_parseState = ParseHeicError;
+            qWarning() << "Unsupported bit depth:" << bit_depth;
+            return false;
+            break;
+        }
+
+        heif_color_profile_type profileType = heif_image_handle_get_color_profile_type(handle.get_raw_image_handle());
+        struct heif_error err;
+        if (profileType == heif_color_profile_type_prof || profileType == heif_color_profile_type_rICC) {
+            int rawProfileSize = (int)heif_image_handle_get_raw_color_profile_size(handle.get_raw_image_handle());
+            if (rawProfileSize > 0) {
+                QByteArray ba(rawProfileSize, 0);
+                err = heif_image_handle_get_raw_color_profile(handle.get_raw_image_handle(), ba.data());
+                if (err.code) {
+                    qWarning() << "icc profile loading failed";
+                } else {
+                    m_current_image.setColorSpace(QColorSpace::fromIccProfile(ba));
+                    if (!m_current_image.colorSpace().isValid()) {
+                        qWarning() << "HEIC image has Qt-unsupported or invalid ICC profile!";
+                    }
+                }
+            } else {
+                qWarning() << "icc profile is empty";
+            }
+
+        } else if (profileType == heif_color_profile_type_nclx) {
+            struct heif_color_profile_nclx *nclx = nullptr;
+            err = heif_image_handle_get_nclx_color_profile(handle.get_raw_image_handle(), &nclx);
+            if (err.code || !nclx) {
+                qWarning() << "nclx profile loading failed";
+            } else {
+                const QPointF redPoint(nclx->color_primary_red_x, nclx->color_primary_red_y);
+                const QPointF greenPoint(nclx->color_primary_green_x, nclx->color_primary_green_y);
+                const QPointF bluePoint(nclx->color_primary_blue_x, nclx->color_primary_blue_y);
+                const QPointF whitePoint(nclx->color_primary_white_x, nclx->color_primary_white_y);
+
+                QColorSpace::TransferFunction q_trc = QColorSpace::TransferFunction::Custom;
+                float q_trc_gamma = 0.0f;
+
+                switch (nclx->transfer_characteristics) {
+                case 4:
+                    q_trc = QColorSpace::TransferFunction::Gamma;
+                    q_trc_gamma = 2.2f;
+                    break;
+                case 5:
+                    q_trc = QColorSpace::TransferFunction::Gamma;
+                    q_trc_gamma = 2.8f;
+                    break;
+                case 8:
+                    q_trc = QColorSpace::TransferFunction::Linear;
+                    break;
+                case 2:
+                case 13:
+                    q_trc = QColorSpace::TransferFunction::SRgb;
+                    break;
+                default:
+                    qWarning("CICP color_primaries: %d, transfer_characteristics: %d\nThe colorspace is unsupported by this plug-in yet.",
+                             nclx->color_primaries,
+                             nclx->transfer_characteristics);
+                    q_trc = QColorSpace::TransferFunction::SRgb;
+                    break;
+                }
+
+                if (q_trc != QColorSpace::TransferFunction::Custom) { // we create new colorspace using Qt
+                    switch (nclx->color_primaries) {
+                    case 1:
+                    case 2:
+                        m_current_image.setColorSpace(QColorSpace(QColorSpace::Primaries::SRgb, q_trc, q_trc_gamma));
+                        break;
+                    case 12:
+                        m_current_image.setColorSpace(QColorSpace(QColorSpace::Primaries::DciP3D65, q_trc, q_trc_gamma));
+                        break;
+                    default:
+                        m_current_image.setColorSpace(QColorSpace(whitePoint, redPoint, greenPoint, bluePoint, q_trc, q_trc_gamma));
+                        break;
+                    }
+                }
+                heif_nclx_color_profile_free(nclx);
+
+                if (!m_current_image.colorSpace().isValid()) {
+                    qWarning() << "HEIC plugin created invalid QColorSpace from NCLX!";
+                }
+            }
+
+        } else {
+            m_current_image.setColorSpace(QColorSpace(QColorSpace::SRgb));
+        }
+
+    } catch (const heif::Error &err) {
+        m_parseState = ParseHeicError;
+        qWarning() << "libheif error:" << err.get_message().c_str();
+        return false;
+    }
+
+    m_parseState = ParseHeicSuccess;
+    return true;
+}
+
+QImageIOPlugin::Capabilities HEIFPlugin::capabilities(QIODevice *device, const QByteArray &format) const
+{
+    if (format == "heif" || format == "heic") {
+        Capabilities format_cap;
+        if (heif_have_decoder_for_format(heif_compression_HEVC)) {
+            format_cap |= CanRead;
+        }
+        if (heif_have_encoder_for_format(heif_compression_HEVC)) {
+            format_cap |= CanWrite;
+        }
+        return format_cap;
+    }
+    if (!format.isEmpty()) {
+        return {};
+    }
+    if (!device->isOpen()) {
+        return {};
+    }
+
+    Capabilities cap;
+    if (device->isReadable() && HEIFHandler::canRead(device) && heif_have_decoder_for_format(heif_compression_HEVC)) {
+        cap |= CanRead;
+    }
+
+    if (device->isWritable() && heif_have_encoder_for_format(heif_compression_HEVC)) {
+        cap |= CanWrite;
+    }
+    return cap;
+}
+
+QImageIOHandler *HEIFPlugin::create(QIODevice *device, const QByteArray &format) const
+{
+    QImageIOHandler *handler = new HEIFHandler;
+    handler->setDevice(device);
+    handler->setFormat(format);
+    return handler;
+}

src/imageformats/heif.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Type=Service
+X-KDE-ServiceTypes=QImageIOPlugins
+X-KDE-ImageFormat=heif
+X-KDE-MimeType=image/heif
+X-KDE-Read=true
+X-KDE-Write=true

src/imageformats/heif.json

@@ -0,0 +1,4 @@
+{
+    "Keys": [ "heif", "heic" ],
+    "MimeTypes": [ "image/heif", "image/heif" ]
+}

src/imageformats/heif_p.h

@@ -0,0 +1,58 @@
+/*
+    High Efficiency Image File Format (HEIF) support for QImage.
+
+    SPDX-FileCopyrightText: 2020 Sirius Bakke <sirius@bakke.co>
+    SPDX-FileCopyrightText: 2021 Daniel Novomesky <dnovomesky@gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KIMG_HEIF_P_H
+#define KIMG_HEIF_P_H
+
+#include <QByteArray>
+#include <QImage>
+#include <QImageIOPlugin>
+
+class HEIFHandler : public QImageIOHandler
+{
+public:
+    HEIFHandler();
+
+    bool canRead() const override;
+    bool read(QImage *image) override;
+    bool write(const QImage &image) override;
+
+    static bool canRead(QIODevice *device);
+
+    QVariant option(ImageOption option) const override;
+    void setOption(ImageOption option, const QVariant &value) override;
+    bool supportsOption(ImageOption option) const override;
+
+private:
+    static bool isSupportedBMFFType(const QByteArray &header);
+    bool ensureParsed() const;
+    bool ensureDecoder();
+
+    enum ParseHeicState {
+        ParseHeicError = -1,
+        ParseHeicNotParsed = 0,
+        ParseHeicSuccess = 1,
+    };
+
+    ParseHeicState m_parseState;
+    int m_quality;
+    QImage m_current_image;
+};
+
+class HEIFPlugin : public QImageIOPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QImageIOHandlerFactoryInterface" FILE "heif.json")
+
+public:
+    Capabilities capabilities(QIODevice *device, const QByteArray &format) const override;
+    QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const override;
+};
+
+#endif // KIMG_HEIF_P_H