Update dependency version to 6.24.0

Previously there was no limit for uncompressed metadata,
but when compressed metadata required buffer larger than 4MB,
image decoding stopped.

Now the plugin discards/skips metadata boxes larger than 8MB
without stopping image decoding.
If size of compressed box is above 8MB,
we do not attempt to decompress it.
File with compressed metadata could be rejected only in rare cases
when the decompression buffer grows above 32MB (four times 8M).

CMakeLists.txt

@@ -1,11 +1,11 @@
-cmake_minimum_required(VERSION 3.16)
+cmake_minimum_required(VERSION 3.27)
 
-set(KF_VERSION "6.22.0") # handled by release scripts
-set(KF_DEP_VERSION "6.22.0") # handled by release scripts
+set(KF_VERSION "6.24.0") # handled by release scripts
+set(KF_DEP_VERSION "6.24.0") # handled by release scripts
 project(KImageFormats VERSION ${KF_VERSION})
 
 include(FeatureSummary)
-find_package(ECM 6.22.0  NO_MODULE)
+find_package(ECM 6.24.0  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)
 
@@ -106,7 +106,7 @@ add_feature_info(LibJXR LibJXR_FOUND "required for the QImage plugin for JPEG XR
 
 ecm_set_disabled_deprecation_versions(
     QT 6.11.0
-    KF 6.21.0
+    KF 6.23.0
 )
 
 add_subdirectory(src)

README.md

@@ -357,9 +357,16 @@ The plugin supports the following image data:
   type 4.
 - FORM PBM: PBM is a chunky version of IFF pictures. It supports 8-bit images 
   with color map only.
+- FORM IMAG (Compact Disc-Interactive): It supports CLut4, CLut7, CLut8, Rle7
+  and DYuv formats.
+- FORM RGFX: It supports uncompressed images only.
 - FOR4 CIMG (Maya Image File Format): It supports 24/48-bit RGB and 32/64-bit 
   RGBA images.
 
+> [!note]
+> The plugin only supports the IFF, ILBM, and LBM file extensions. You'll 
+> need to rename files with different extensions to open them.
+
 ### The JP2 plugin
 
 **This plugin can be disabled by setting `KIMAGEFORMATS_JP2` to `OFF` 

autotests/anitest.cpp

@@ -48,7 +48,7 @@ private Q_SLOTS:
         QCOMPARE(reader.text(QStringLiteral("Author")), QStringLiteral("KDE Community"));
     }
 
-    void textRead()
+    void testRead()
     {
         QImageReader reader(QFINDTESTDATA("ani/test.ani"));
         QVERIFY(reader.canRead());

autotests/ossfuzz/build_fuzzers.sh

@@ -18,6 +18,11 @@
 # limitations under the License.
 #
 ################################################################################
+LDFLAGS=""
+if [[ $FUZZING_ENGINE == "afl" ]]; then
+    LDFLAGS="-fuse-ld=lld"
+fi
+export LDFLAGS
 
 # build zstd
 cd $SRC/zstd
@@ -185,7 +190,7 @@ echo "$HANDLER_TYPES" | while read class format; do
   /usr/libexec/moc $SRC/kimageformats/src/imageformats/$format.cpp -o $format.moc
   header=`ls $SRC/kimageformats/src/imageformats/$format*.h`
   /usr/libexec/moc $header -o moc_`basename $header .h`.cpp
-  $CXX $CXXFLAGS -fPIC -DHANDLER=$class -std=c++17 autotests/ossfuzz/kimgio_fuzzer.cc $SRC/kimageformats/src/imageformats/$format.cpp $SRC/kimageformats/src/imageformats/scanlineconverter.cpp $SRC/kimageformats/src/imageformats/microexif.cpp $SRC/kimageformats/src/imageformats/chunks.cpp -o $OUT/$fuzz_target_name -DJXL_STATIC_DEFINE -DJXL_THREADS_STATIC_DEFINE -DJXL_CMS_STATIC_DEFINE -DINITGUID -I $SRC/kimageformats/src/imageformats/ -I $SRC/libavif/include/ -I $SRC/libjxl/build/lib/include/ -I $SRC/libjxl/lib/include/ -I /usr/local/include/OpenEXR/ -I /usr/local/include/KF6/KArchive/ -I /usr/local/include/openjpeg-2.5 -I /usr/local/include/Imath -I $SRC/jxrlib/common/include -I $SRC/jxrlib/jxrgluelib -I $SRC/jxrlib/image/sys -I /usr/include/QtCore/ -I /usr/include/QtGui/ -I . $SRC/libavif/build/libavif.a /usr/local/lib/libheif.a /usr/local/lib/libde265.a /usr/local/lib/libopenh264.a $SRC/aom/build.libavif/libaom.a $SRC/libjxl/build/lib/libjxl_threads.a $SRC/libjxl/build/lib/libjxl.a $SRC/libjxl/build/lib/libjxl_cms.a $SRC/libjxl/build/third_party/highway/libhwy.a $SRC/libjxl/build/third_party/brotli/libbrotlidec.a $SRC/libjxl/build/third_party/brotli/libbrotlienc.a $SRC/libjxl/build/third_party/brotli/libbrotlicommon.a -lQt6Gui -lQt6Core -lQt6BundledLibpng -lQt6BundledHarfbuzz -lm -lQt6BundledPcre2 -ldl -lpthread $LIB_FUZZING_ENGINE /usr/local/lib/libz.a -lKF6Archive /usr/local/lib/libz.a /usr/local/lib/libraw.a /usr/local/lib/libOpenEXR-3_3.a /usr/local/lib/libIex-3_3.a /usr/local/lib/libImath-3_1.a /usr/local/lib/libIlmThread-3_3.a /usr/local/lib/libOpenEXRCore-3_3.a /usr/local/lib/libOpenEXRUtil-3_3.a /usr/local/lib/libopenjp2.a /usr/local/lib/libzstd.a $SRC/jxrlib/build/libjxrglue.a $SRC/jxrlib/build/libjpegxr.a -llzma /usr/local/lib/libbz2.a -lclang_rt.builtins
+  $CXX $CXXFLAGS $LDFLAGS -fPIC -DHANDLER=$class -std=c++17 autotests/ossfuzz/kimgio_fuzzer.cc $SRC/kimageformats/src/imageformats/$format.cpp $SRC/kimageformats/src/imageformats/scanlineconverter.cpp $SRC/kimageformats/src/imageformats/microexif.cpp $SRC/kimageformats/src/imageformats/chunks.cpp -o $OUT/$fuzz_target_name -DJXL_STATIC_DEFINE -DJXL_THREADS_STATIC_DEFINE -DJXL_CMS_STATIC_DEFINE -DINITGUID -I $SRC/kimageformats/src/imageformats/ -I $SRC/libavif/include/ -I $SRC/libjxl/build/lib/include/ -I $SRC/libjxl/lib/include/ -I /usr/local/include/OpenEXR/ -I /usr/local/include/KF6/KArchive/ -I /usr/local/include/openjpeg-2.5 -I /usr/local/include/Imath -I $SRC/jxrlib/common/include -I $SRC/jxrlib/jxrgluelib -I $SRC/jxrlib/image/sys -I /usr/include/QtCore/ -I /usr/include/QtGui/ -I . $SRC/libavif/build/libavif.a /usr/local/lib/libheif.a /usr/local/lib/libde265.a /usr/local/lib/libopenh264.a $SRC/aom/build.libavif/libaom.a $SRC/libjxl/build/lib/libjxl_threads.a $SRC/libjxl/build/lib/libjxl.a $SRC/libjxl/build/lib/libjxl_cms.a $SRC/libjxl/build/third_party/highway/libhwy.a $SRC/libjxl/build/third_party/brotli/libbrotlidec.a $SRC/libjxl/build/third_party/brotli/libbrotlienc.a $SRC/libjxl/build/third_party/brotli/libbrotlicommon.a -lQt6Gui -lQt6Core -lQt6BundledLibpng -lQt6BundledHarfbuzz -lm -lQt6BundledPcre2 -ldl -lpthread $LIB_FUZZING_ENGINE /usr/local/lib/libz.a /usr/local/lib/x86_64-linux-gnu/libKF6Archive.a /usr/local/lib/libz.a /usr/local/lib/libraw.a /usr/local/lib/libOpenEXR-3_3.a /usr/local/lib/libIex-3_3.a /usr/local/lib/libImath-3_1.a /usr/local/lib/libIlmThread-3_3.a /usr/local/lib/libOpenEXRCore-3_3.a /usr/local/lib/libOpenEXRUtil-3_3.a /usr/local/lib/libopenjp2.a /usr/local/lib/libzstd.a $SRC/jxrlib/build/libjxrglue.a $SRC/jxrlib/build/libjpegxr.a /usr/local/lib/liblzma.a /usr/local/lib/libbz2.a -lclang_rt.builtins
 
   # -lclang_rt.builtins in the previous line is a temporary workaround to avoid a linker error "undefined reference to __truncsfhf2". Investigate why this is needed here, but not anywhere else, and possibly remove it.
 

autotests/ossfuzz/prepare_build.sh

@@ -33,10 +33,10 @@ git clone --depth 1 -b master https://invent.kde.org/frameworks/extra-cmake-modu
 git clone --depth 1 --branch=dev git://code.qt.io/qt/qtbase.git
 git clone --depth 1 --branch=dev git://code.qt.io/qt/qttools.git
 git clone --depth 1 -b master https://invent.kde.org/frameworks/karchive.git
-git clone --depth 1 -b v3.12.0 https://aomedia.googlesource.com/aom
-git clone --depth 1 -b v1.2.1 https://github.com/AOMediaCodec/libavif.git
+git clone --depth 1 -b v3.13.1 https://aomedia.googlesource.com/aom
+git clone --depth 1 -b v1.3.0 https://github.com/AOMediaCodec/libavif.git
 git clone --depth 1 https://github.com/strukturag/libde265.git
-git clone --depth 1 -b v2.5.3 https://github.com/uclouvain/openjpeg.git
+git clone --depth 1 -b v2.5.4 https://github.com/uclouvain/openjpeg.git
 git clone --depth 1 https://github.com/strukturag/libheif.git
 git clone --depth=1 --recursive --shallow-submodules https://github.com/libjxl/libjxl.git
 git clone --depth 1 https://github.com/LibRaw/LibRaw

autotests/read/avif/profile_gray.avif.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "profile_gray.png",
+        "colorSpace" : {
+            "colorModel" : "Gray",
+            "primaries" : "Custom",
+            "transferFunction" : "SRgb",
+            "gamma" : 2.31
+        }
+    }
+]

autotests/read/avif/profile_gray_gamma22.avif.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "profile_gray_gamma22.png",
+        "colorSpace" : {
+            "colorModel" : "Gray",
+            "primaries" : "Custom",
+            "transferFunction" : "Gamma",
+            "gamma" : 2.2
+        }
+    }
+]

autotests/read/avif/profile_gray_gamma28.avif.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "profile_gray_gamma28.png",
+        "colorSpace" : {
+            "colorModel" : "Gray",
+            "primaries" : "Custom",
+            "transferFunction" : "Gamma",
+            "gamma" : 2.8
+        }
+    }
+]

autotests/read/avif/profile_gray_linear.avif.json

@@ -0,0 +1,11 @@
+[
+    {
+        "fileName" : "profile_gray_linear.png",
+        "colorSpace" : {
+            "colorModel" : "Gray",
+            "primaries" : "Custom",
+            "transferFunction" : "Linear",
+            "gamma" : 1
+        }
+    }
+]

autotests/read/avif/profile_gray_prophoto.avif.json

@@ -0,0 +1,12 @@
+[
+    {
+        "fileName" : "profile_gray_prophoto.png",
+        "colorSpace" : {
+            "description" : "grayscale D50 with ProPhoto TRC",
+            "colorModel" : "Gray",
+            "primaries" : "Custom",
+            "transferFunction" : "Custom",
+            "gamma" : 0
+        }
+    }
+]

autotests/read/iff/cdi_dyuv_each.iff.json

@@ -0,0 +1,9 @@
+[
+    {
+        "fileName" : "cdi_dyuv_each.iff",
+        "resolution" : {
+            "dotsPerMeterX" : 3937,
+            "dotsPerMeterY" : 5249
+        }
+    }
+]

autotests/read/iff/sv5_rgba32_rgx.iff.json

@@ -0,0 +1,37 @@
+[
+    {
+        "fileName" : "sv5_rgba32_rgx.png",
+        "colorSpace" : {
+            "description" : "TIFF ICC Profile",
+            "primaries" : "SRgb",
+            "transferFunction" : "SRgb",
+            "gamma" : 0
+        },
+        "metadata" : [
+            {
+                "key" : "Author",
+                "value" : "KDE Project"
+            },
+            {
+                "key" : "Copyright",
+                "value" : "@2025 KDE Project"
+            },
+            {
+                "key" : "CreationDate",
+                "value" : "2025-01-14T10:34:51"
+            },
+            {
+                "key" : "Description",
+                "value" : "TV broadcast test image."
+            },
+            {
+                "key" : "Title",
+                "value" : "Test Card"
+            }
+        ],
+        "resolution" : {
+            "dotsPerMeterX" : 2835,
+            "dotsPerMeterY" : 2835
+        }
+    }
+]

autotests/read/jxl/gray_linear_lossy.jxl.json

@@ -0,0 +1,14 @@
+[
+    {
+        "fileName" : "gray_linear_lossy.png",
+        "fuzziness" : 1,
+        "description" : "Minimum fuzziness value to pass the test on all architectures.",
+        "colorSpace" : {
+            "description" : "Gra_D65_Rel_SRG",
+            "primaries" : "Custom",
+            "transferFunction" : "SRgb",
+            "gamma" : 0,
+            "colorModel" : "Gray"
+        }
+    }
+]

src/imageformats/ani.cpp

@@ -5,6 +5,7 @@
 */
 
 #include "ani_p.h"
+#include "util_p.h"
 
 #include <QImage>
 #include <QLoggingCategory>
@@ -101,7 +102,7 @@ bool ANIHandler::read(QImage *outImage)
     }
 
     const auto frameSize = *(reinterpret_cast<const quint32_le *>(frameSizeData.data()));
-    if (!frameSize) {
+    if (!frameSize || frameSize > quint32(kMaxQVectorSize)) {
         return false;
     }
 
@@ -417,6 +418,9 @@ bool ANIHandler::ensureScanned() const
             // 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") {
+            if (chunkSize > kMaxQVectorSize) {
+                return false;
+            }
             const QByteArray value = device()->read(chunkSize);
 
             if (static_cast<quint32_le>(value.size()) != chunkSize) {

src/imageformats/avif.cpp

@@ -388,6 +388,9 @@ bool QAVIFHandler::decode_one_frame()
                 case 2: /* AVIF_COLOR_PRIMARIES_UNSPECIFIED */
                     colorspace = QColorSpace(QColorSpace::Primaries::SRgb, q_trc, q_trc_gamma);
                     break;
+                case 9:
+                    colorspace = QColorSpace(QColorSpace::Primaries::Bt2020, q_trc, q_trc_gamma);
+                    break;
                 /* AVIF_COLOR_PRIMARIES_SMPTE432 */
                 case 12:
                     colorspace = QColorSpace(QColorSpace::Primaries::DciP3D65, q_trc, q_trc_gamma);
@@ -740,6 +743,15 @@ bool QAVIFHandler::write(const QImage &image)
                 /* AVIF_TRANSFER_CHARACTERISTICS_LINEAR */
                 avif->transferCharacteristics = (avifTransferCharacteristics)8;
                 break;
+            case QColorSpace::TransferFunction::Gamma:
+                if (qAbs(tmpgrayimage.colorSpace().gamma() - 2.2f) < 0.1f) {
+                    /* AVIF_TRANSFER_CHARACTERISTICS_BT470M */
+                    avif->transferCharacteristics = (avifTransferCharacteristics)4;
+                } else if (qAbs(tmpgrayimage.colorSpace().gamma() - 2.8f) < 0.1f) {
+                    /* AVIF_TRANSFER_CHARACTERISTICS_BT470BG */
+                    avif->transferCharacteristics = (avifTransferCharacteristics)5;
+                }
+                break;
             case QColorSpace::TransferFunction::SRgb:
                 /* AVIF_TRANSFER_CHARACTERISTICS_SRGB */
                 avif->transferCharacteristics = (avifTransferCharacteristics)13;
@@ -754,6 +766,42 @@ bool QAVIFHandler::write(const QImage &image)
                 /* AVIF_TRANSFER_CHARACTERISTICS_UNSPECIFIED */
                 break;
             }
+
+            if (avif->transferCharacteristics == 2) { // in case TransferFunction was not identified yet
+                if (tmpgrayimage.colorSpace().colorModel() == QColorSpace::ColorModel::Gray && lossless) {
+                    avif->colorPrimaries = (avifColorPrimaries)2;
+                    avif->matrixCoefficients = (avifMatrixCoefficients)6;
+
+                    QByteArray iccprofile_gray = tmpgrayimage.colorSpace().iccProfile();
+
+                    if (iccprofile_gray.size() > 0) {
+#if AVIF_VERSION >= 1000000
+                        res = avifImageSetProfileICC(avif, reinterpret_cast<const uint8_t *>(iccprofile_gray.constData()), iccprofile_gray.size());
+                        if (res != AVIF_RESULT_OK) {
+                            qCWarning(LOG_AVIFPLUGIN, "ERROR in avifImageSetProfileICC: %s", avifResultToString(res));
+                            return false;
+                        }
+#else
+                        avifImageSetProfileICC(avif, reinterpret_cast<const uint8_t *>(iccprofile_gray.constData()), iccprofile_gray.size());
+#endif
+                    }
+                } else { // convert to grayscale with SRgb
+                    tmpgrayimage.convertToColorSpace(QColorSpace(QPointF(0.3127f, 0.329f), QColorSpace::TransferFunction::SRgb), QImage::Format_Grayscale16);
+                    switch (tmpgrayimage.format()) {
+                    case QImage::Format_Grayscale8:
+                        save_depth = 8;
+                        break;
+                    case QImage::Format_Grayscale16:
+                        save_depth = 10;
+                        avif->transferCharacteristics = (avifTransferCharacteristics)13;
+                        break;
+                    default:
+                        qCWarning(LOG_AVIFPLUGIN, "Error saving Gray image");
+                        return false;
+                        break;
+                    }
+                }
+            }
         }
 
         if (save_depth > 8) { // QImage::Format_Grayscale16
@@ -838,6 +886,10 @@ bool QAVIFHandler::write(const QImage &image)
                 /* AVIF_MATRIX_COEFFICIENTS_CHROMA_DERIVED_NCL */
                 matrix_to_save = (avifMatrixCoefficients)12;
                 break;
+            case QColorSpace::Primaries::Bt2020:
+                primaries_to_save = (avifColorPrimaries)9;
+                matrix_to_save = (avifMatrixCoefficients)12;
+                break;
             default:
                 /* AVIF_TRANSFER_CHARACTERISTICS_UNSPECIFIED */
                 primaries_to_save = (avifColorPrimaries)2;

src/imageformats/chunks_p.h

@@ -1,6 +1,6 @@
 /*
     This file is part of the KDE project
-    SPDX-FileCopyrightText: 2025 Mirco Miranda <mircomir@outlook.com>
+    SPDX-FileCopyrightText: 2025-2026 Mirco Miranda <mircomir@outlook.com>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
@@ -10,6 +10,7 @@
  * - https://wiki.amigaos.net/wiki/IFF_FORM_and_Chunk_Registry
  * - https://www.fileformat.info/format/iff/egff.htm
  * - https://download.autodesk.com/us/maya/2010help/index.html (Developer resources -> File formats -> Maya IFF)
+ * - https://aminet.net/package/dev/misc/IFF-RGFX
  */
 
 #ifndef KIMG_CHUNKS_P_H
@@ -55,7 +56,17 @@ Q_DECLARE_LOGGING_CATEGORY(LOG_IFFPLUGIN)
 #define CMAP_CHUNK QByteArray("CMAP")
 #define CMYK_CHUNK QByteArray("CMYK") // https://wiki.amigaos.net/wiki/ILBM_IFF_Interleaved_Bitmap#ILBM.CMYK
 #define DPI__CHUNK QByteArray("DPI ")
+#define IDAT_CHUNK QByteArray("IDAT")
+#define IHDR_CHUNK QByteArray("IHDR")
+#define IPAR_CHUNK QByteArray("IPAR")
+#define PLTE_CHUNK QByteArray("PLTE")
+#define RBOD_CHUNK QByteArray("RBOD")
+#define RCOL_CHUNK QByteArray("RCOL")
+#define RFLG_CHUNK QByteArray("RFLG")
+#define RGHD_CHUNK QByteArray("RGHD")
+#define RSCM_CHUNK QByteArray("RSCM")
 #define XBMI_CHUNK QByteArray("XBMI")
+#define YUVS_CHUNK QByteArray("YUVS")
 
 // Different palette for scanline
 #define BEAM_CHUNK QByteArray("BEAM")
@@ -79,14 +90,18 @@ Q_DECLARE_LOGGING_CATEGORY(LOG_IFFPLUGIN)
 #define FVER_CHUNK QByteArray("FVER")
 #define HIST_CHUNK QByteArray("HIST")
 #define NAME_CHUNK QByteArray("NAME")
+#define VDAT_CHUNK QByteArray("VDAT")
 #define VERS_CHUNK QByteArray("VERS")
 #define XMP0_CHUNK QByteArray("XMP0") // https://aminet.net/package/docs/misc/IFF-metadata
 
+// FORM types
 #define ACBM_FORM_TYPE QByteArray("ACBM")
 #define ILBM_FORM_TYPE QByteArray("ILBM")
+#define IMAG_FORM_TYPE QByteArray("IMAG")
 #define PBM__FORM_TYPE QByteArray("PBM ")
 #define RGB8_FORM_TYPE QByteArray("RGB8")
 #define RGBN_FORM_TYPE QByteArray("RGBN")
+#define RGFX_FORM_TYPE QByteArray("RGFX")
 
 #define CIMG_FOR4_TYPE QByteArray("CIMG")
 #define TBMP_FOR4_TYPE QByteArray("TBMP")
@@ -424,7 +439,8 @@ public:
     enum Compression {
         Uncompressed = 0, /**< Image data are uncompressed. */
         Rle = 1, /**< Image data are RLE compressed. */
-        RgbN8 = 4 /**< RGB8/RGBN compresson. */
+        Vdat = 2, /**< Image data are VDAT compressed. */
+        RgbN8 = 4 /**< Image data are RGB8/RGBN compressed. */
     };
     enum Masking {
         None = 0, /**< Designates an opaque rectangular image. */
@@ -756,10 +772,11 @@ public:
     /*!
      * \brief readStride
      * \param d The device.
-     * \param header The bitmap header.
      * \param y The current scanline.
+     * \param header The bitmap header.
      * \param camg The CAMG chunk (optional)
      * \param cmap The CMAP chunk (optional)
+     * \param ipal The per-line palette chunk (optional)
      * \param formType The type of the current form chunk.
      * \return The scanline as requested for QImage.
      * \warning Call resetStrideRead() once before this one.
@@ -776,8 +793,6 @@ public:
      * \brief resetStrideRead
      * Reset the stride read set the position at the beginning of the data and reset all buffers.
      * \param d The device.
-     * \param header The BMHDChunk chunk (mandatory)
-     * \param camg The CAMG chunk (optional)
      * \return True on success, otherwise false.
      * \sa strideRead
      * \note Must be called once before strideRead().
@@ -788,6 +803,7 @@ public:
      * \brief safeModeId
      * \param header The header.
      * \param camg The CAMG chunk.
+     * \param cmap The CMAP chunk.
      * \return The most likely ModeId if not explicitly specified.
      */
     static CAMGChunk::ModeIds safeModeId(const BMHDChunk *header, const CAMGChunk *camg, const CMAPChunk *cmap = nullptr);
@@ -808,6 +824,8 @@ protected:
 
     QByteArray rgbN(const QByteArray &planes, qint32 y, const BMHDChunk *header, const CAMGChunk *camg = nullptr, const CMAPChunk *cmap = nullptr, const IPALChunk *ipal = nullptr) const;
 
+    virtual bool innerReadStructure(QIODevice *d) override;
+
 private:
     mutable QByteArray _readBuffer;
 };
@@ -921,6 +939,13 @@ public:
 
 protected:
     virtual bool innerReadStructure(QIODevice *d) override;
+
+private:
+    QImage::Format iffFormat() const;
+
+    QImage::Format cdiFormat() const;
+
+    QImage::Format rgfxFormat() const;
 };
 
 
@@ -1357,6 +1382,32 @@ protected:
     virtual bool innerReadStructure(QIODevice *d) override;
 };
 
+
+/*!
+ * \brief The VDATChunk class
+ */
+class VDATChunk : public IFFChunk
+{
+public:
+    virtual ~VDATChunk() override;
+    VDATChunk();
+    VDATChunk(const VDATChunk& other) = default;
+    VDATChunk& operator =(const VDATChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    CHUNKID_DEFINE(VDAT_CHUNK)
+
+    const QByteArray &uncompressedData(const BMHDChunk *header) const;
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+
+private:
+    mutable QByteArray uncompressed;
+};
+
+
 /*!
  * \brief The VERSChunk class
  */
@@ -1400,6 +1451,500 @@ protected:
     virtual bool innerReadStructure(QIODevice *d) override;
 };
 
+/*!
+ * *** I-CD IFF CHUNKS ***
+ */
+
+/*!
+ * \brief The IHDRChunk class
+ * Image Header
+ */
+class IHDRChunk: public IFFChunk
+{
+public:
+    enum Model {
+        Invalid = 0, /**< Invalid model. */
+        Rgb888 = 1, /**< red, green, blue - 8 bits per color. */
+        Rgb555 = 2, /**< Green Book absolute RGB. */
+        DYuv = 3, /**< Green Book Delta YUV. */
+        CLut8 = 4, /**< Green Book 8 bit CLUT. */
+        CLut7 = 5, /**< Green Book 7 bit CLUT. */
+        CLut4 = 6, /**< Green Book 4 bit CLUT. */
+        CLut3 = 7, /**< Green Book 3 bit CLUT. */
+        Rle7 = 8, /**< Green Book runlength coded 7 bit CLUT. */
+        Rle3 = 9, /**< Green Book runlength coded 3 bit CLUT. */
+        PaletteOnly = 10 /**< color palette only. */
+    };
+
+    enum DYuvKind {
+        One = 0,
+        Each = 1
+    };
+
+    struct Yuv {
+        Yuv(quint8 y0 = 0, quint8 u0 = 0, quint8 v0 = 0) : y(y0), u(u0), v(v0) {}
+        quint8 y;
+        quint8 u;
+        quint8 v;
+    };
+
+    virtual ~IHDRChunk() override;
+
+    IHDRChunk();
+    IHDRChunk(const IHDRChunk& other) = default;
+    IHDRChunk& operator =(const IHDRChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    /*!
+     * \brief width
+     * \return Width of the bitmap in pixels.
+     */
+    qint32 width() const;
+
+    /*!
+     * \brief height
+     * \return Height of the bitmap in pixels.
+     */
+    qint32 height() const;
+
+    /*!
+     * \brief size
+     * \return Size in pixels.
+     */
+    QSize size() const;
+
+    /*!
+     * \brief lineSize
+     * Physical width of image (number of bytes in each scan line, including any data required at
+     * the end of each scan line for padding [see description of each model’s IDAT chunk for padding
+     * rules]) This field is not used when model() = Rle7 or Rle3.
+     * When model() = Rgb555, this field defines the size of one scan line of the upper
+     * or lower portion of the pixel data, but not the size of them both together.
+     */
+    qint32 lineSize() const;
+
+    /*!
+     * \brief model
+     * Image model (coding method)
+     */
+    Model model() const;
+
+    /*!
+     * \brief depth
+     * Physical size of pixel (number of bits per pixel used in storing image data) When
+     * model() = Rle7 or Rle3, this value only represents the size of a
+     * single pixel; the size of a run of pixels is indeterminate.
+     */
+    quint16 depth() const;
+
+    /*!
+     * \brief yuvKind
+     * if model() = DYuv, indicates whether there is one DYUV start value for all
+     * scan lines (in yuvStart()), or whether each scan line has its own start value in the
+     * YUVS chunk which follows.
+     */
+    DYuvKind yuvKind() const;
+
+    /*!
+     * \brief yuvStart
+     * Start values for DYUV image if model() = DYuv and dYuvKind() = One
+     */
+    Yuv yuvStart() const;
+
+    CHUNKID_DEFINE(IHDR_CHUNK)
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The IHDRChunk class
+ */
+class IPARChunk: public IFFChunk
+{
+public:
+    struct Rgb {
+        Rgb(quint8 r0 = 0, quint8 g0 = 0, quint8 b0 = 0) : r(r0), g(g0), b(b0) {}
+        quint8 r;
+        quint8 g;
+        quint8 b;
+    };
+
+    virtual ~IPARChunk() override;
+
+    IPARChunk();
+    IPARChunk(const IPARChunk& other) = default;
+    IPARChunk& operator =(const IPARChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    /*!
+     * \brief xOffset
+     * X offset of origin in source image [0 < xOffset() < xPage()]
+     */
+    qint32 xOffset() const;
+
+    /*!
+     * \brief yOffset
+     * \returnX offset of origin in source image [0 < yOffset() < yPage()]
+     */
+    qint32 yOffset() const;
+
+    /*!
+     * \brief aspectRatio
+     * Aspect ratio of pixels in source image.
+     */
+    double aspectRatio() const;
+
+    /*!
+     * \brief xPage
+     * X size of source image.
+     */
+    qint32 xPage() const;
+
+    /*!
+     * \brief yPage
+     * Y size of source image.
+     */
+    qint32 yPage() const;
+
+    /*!
+     * \brief xGrub
+     * X location of hot spot within image.
+     */
+    qint32 xGrub() const;
+
+    /*!
+     * \brief yGrub
+     * Y location of hot spot within image.
+     */
+    qint32 yGrub() const;
+
+    /*!
+     * \brief transparency
+     * Transparent color.
+     */
+    Rgb transparency() const;
+
+    /*!
+     * \brief mask
+     * Mask color.
+     */
+    Rgb mask() const;
+
+    CHUNKID_DEFINE(IPAR_CHUNK)
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The PLTEChunk class
+ */
+class PLTEChunk : public CMAPChunk
+{
+public:
+    virtual ~PLTEChunk() override;
+    PLTEChunk();
+    PLTEChunk(const PLTEChunk& other) = default;
+    PLTEChunk& operator =(const PLTEChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    /*!
+     * \brief count
+     * \return The number of color in the palette.
+     */
+    virtual qint32 count() const override;
+
+    CHUNKID_DEFINE(PLTE_CHUNK)
+
+protected:
+    qint32 offset() const;
+
+    qint32 total() const;
+
+    virtual QList<QRgb> innerPalette() const override;
+};
+
+
+/*!
+ * \brief The YUVSChunk class
+ */
+class YUVSChunk : public IFFChunk
+{
+public:
+    virtual ~YUVSChunk() override;
+    YUVSChunk();
+    YUVSChunk(const YUVSChunk& other) = default;
+    YUVSChunk& operator =(const YUVSChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    qint32 count() const;
+
+    IHDRChunk::Yuv yuvStart(qint32 y) const;
+
+    CHUNKID_DEFINE(YUVS_CHUNK)
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The IDATChunk class
+ */
+class IDATChunk : public IFFChunk
+{
+public:
+    virtual ~IDATChunk() override;
+    IDATChunk();
+    IDATChunk(const IDATChunk& other) = default;
+    IDATChunk& operator =(const IDATChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    CHUNKID_DEFINE(IDAT_CHUNK)
+
+    /*!
+     * \brief readStride
+     * \param d The device.
+     * \param y The current scanline.
+     * \param header The bitmap header.
+     * \param params The additional parameters (optional)
+     * \return The scanline as requested for QImage.
+     * \warning Call resetStrideRead() once before this one.
+     */
+    QByteArray strideRead(QIODevice *d,
+                          qint32 y,
+                          const IHDRChunk *header,
+                          const IPARChunk *params = nullptr,
+                          const YUVSChunk *yuvs = nullptr) const;
+
+    /*!
+     * \brief resetStrideRead
+     * Reset the stride read set the position at the beginning of the data and reset all buffers.
+     * \param d The device.
+     * \return True on success, otherwise false.
+     * \sa strideRead
+     * \note Must be called once before strideRead().
+     */
+    bool resetStrideRead(QIODevice *d) const;
+
+protected:
+    quint32 strideSize(const IHDRChunk *header) const;
+};
+
+
+/*!
+ * *** RGFX IFF CHUNKS ***
+ */
+
+/*!
+ * \brief The RGHDChunk class
+ */
+class RGHDChunk : public IFFChunk
+{
+public:
+    enum Compression {
+        Uncompressed = 0,
+        Xpk = 1, /**< any XPK-packer */
+        Zip = 2 /**< libzip (LZ77/ZIP) compression */
+    };
+
+    enum BitmapType {
+        Planar8 = 0x0000, /**<  unaligned planar 8 bit bitmap */
+        Chunky8 = 0x0001, /**<  unaligned chunky 8 bit bitmap */
+        Rgb24 = 0x0002, /**<  3-byte 24  bit  RGB triples */
+        Rgb32 = 0x0004, /**<  4-byte 32  bit ARGB quadruples */
+        Rgb15 = 0x0010, /**<  2-byte 15  bit  RGB (x+3x5 bit integer) */
+        Rgb16 = 0x0020, /**<  2-byte 16  bit ARGB (1+3x5 bit integer) */
+        Rgb48 = 0x0040, /**<  6-byte 48  bit  RGB (3x 16 bit integer) */
+        Rgb64 = 0x0080, /**<  8-byte 64  bit ARGB (4x 16 bit integer) */
+        Rgb96 = 0x0100, /**< 12-byte 96  bit  RGB (3x 32 bit float) */
+        Rgb128 = 0x0200, /**< 16-byte 128 bit ARGB (4x 32 bit float) */
+
+        HasAlpha = (1 << 30), /**< set if A is meaningful */
+        HasInvAlpha = (1 << 31) /**< set if A is meaningful but inversed (A = 255 - alpha) */
+    };
+    Q_DECLARE_FLAGS(BitmapTypes, BitmapType)
+
+    virtual ~RGHDChunk() override;
+    RGHDChunk();
+    RGHDChunk(const RGHDChunk&) = default;
+    RGHDChunk& operator=(const RGHDChunk&) = default;
+
+    CHUNKID_DEFINE(RGHD_CHUNK)
+
+    virtual bool isValid() const override;
+
+    QSize size() const;
+
+    qint32 leftEdge() const;
+
+    qint32 topEdge() const;
+
+    qint32 width() const;
+
+    qint32 height() const;
+
+    qint32 pageWidth() const;
+
+    qint32 pageHeight() const;
+
+    quint32 depth() const;
+
+    quint32 pixelBits() const;
+
+    quint32 bytesPerLine() const;
+
+    Compression compression() const;
+
+    quint32 xAspect() const;
+
+    quint32 yAspect() const;
+
+    BitmapTypes bitmapType() const;
+
+    double aspectRatio() const;
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The RCOLChunk class
+ */
+class RCOLChunk : public CMAPChunk
+{
+public:
+    virtual ~RCOLChunk() override;
+    RCOLChunk();
+    RCOLChunk(const RCOLChunk& other) = default;
+    RCOLChunk& operator =(const RCOLChunk& other) = default;
+
+    virtual bool isValid() const override;
+
+    virtual qint32 count() const override;
+
+    CHUNKID_DEFINE(RCOL_CHUNK)
+
+protected:
+    virtual QList<QRgb> innerPalette() const override;
+};
+
+
+/*!
+ * \brief The RFLGChunk class
+ */
+class RFLGChunk : public IFFChunk
+{
+public:
+    enum class Flag : quint32 {
+        FromGray = 0x08, /**< created from 8/16 bit gray source so R==G==B */
+        From8Bit = 0x10, /**< created from 8 bit source, so (R,G,B)&0xFF00 == ... & 0x00FF */
+        From4Bit = 0x20, /**< created from 4 bit source, so (R,G,B)&0xF0 == ... & 0x0F */
+        From8BitAlpha = 0x40, /**< 16/32 bit alpha created from 8 bit alpha source */
+        From16BitAlpha = 0x80 /**< 32 bit alpha created from 16 bit alpha source */
+    };
+    Q_DECLARE_FLAGS(Flags, Flag)
+
+    virtual ~RFLGChunk() override;
+    RFLGChunk();
+    RFLGChunk(const RFLGChunk&) = default;
+    RFLGChunk& operator=(const RFLGChunk&) = default;
+
+    CHUNKID_DEFINE(RFLG_CHUNK)
+
+    virtual bool isValid() const override;
+
+    Flags flags() const;
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The RSCMChunk class
+ */
+class RSCMChunk : public IFFChunk
+{
+public:
+    virtual ~RSCMChunk() override;
+    RSCMChunk();
+    RSCMChunk(const RSCMChunk&) = default;
+    RSCMChunk& operator=(const RSCMChunk&) = default;
+
+    CHUNKID_DEFINE(RSCM_CHUNK)
+
+    virtual bool isValid() const override;
+
+    /*!
+     * \brief viewMode Default screenmode
+     *
+     * Since HAM modes only can be identified by their ID (or DIPF) you have to make sure,
+     * that rcsm_ViewMode is OR'ed with HAM_KEY for these (same for EHB and EXTRAHALFBRITE_KEY).
+     *
+     * Specific RTG ViewModes will lose their meaning, as soon as graphics are transferred between
+     * different systems, which is why the two LocalVM entries are considered obsolete.
+     *
+     * Always set the obsolete entries to 0xFFFFFFFF and avoid interpreting them.
+     * \return default screenmode
+     */
+    quint32 viewMode() const;
+
+    /*!
+     * \brief localVM0
+     * \obsolete obsolete local RTG
+     */
+    quint32 localVM0() const;
+
+    /*!
+     * \brief localVM1
+     * \obsolete obsolete local RTG
+     */
+    quint32 localVM1() const;
+
+protected:
+    virtual bool innerReadStructure(QIODevice *d) override;
+};
+
+
+/*!
+ * \brief The RBODChunk class
+ */
+class RBODChunk : public IFFChunk
+{
+public:
+    virtual ~RBODChunk() override;
+    RBODChunk();
+    RBODChunk(const RBODChunk&) = default;
+    RBODChunk& operator=(const RBODChunk&) = default;
+
+    CHUNKID_DEFINE(RBOD_CHUNK)
+
+    virtual bool isValid() const override;
+
+    QByteArray strideRead(QIODevice *d,
+                          qint32 y,
+                          const RGHDChunk *header,
+                          const RSCMChunk *rcsm = nullptr,
+                          const RCOLChunk *rcol = nullptr) const;
+
+    bool resetStrideRead(QIODevice *d) const;
+
+private:
+    QByteArray deinterleave(const QByteArray &planes, qint32 y, const RGHDChunk *header, const RSCMChunk *rcsm = nullptr, const RCOLChunk *rcol = nullptr) const;
+
+    quint32 strideSize(const RGHDChunk *header) const;
+};
+
 
 /*!
  * *** UNDOCUMENTED CHUNKS ***

src/imageformats/iff.cpp

@@ -262,14 +262,26 @@ static void addMetadata(QImage &img, const IFOR_Chunk *form)
 
     // if no explicit resolution was found, apply the aspect ratio to the default one
     if (!resChanged) {
-        auto headers = IFFChunk::searchT<BMHDChunk>(form);
-        if (!headers.isEmpty()) {
-            auto xr = headers.first()->xAspectRatio();
-            auto yr = headers.first()->yAspectRatio();
-            if (xr > 0 && yr > 0 && xr > yr) {
-                img.setDotsPerMeterX(img.dotsPerMeterX() * yr / xr);
-            } else if (xr > 0 && yr > 0 && xr < yr) {
-                img.setDotsPerMeterY(img.dotsPerMeterY() * xr / yr);
+        if (form->formType() == IMAG_FORM_TYPE) {
+            auto params = IFFChunk::searchT<IPARChunk>(form);
+            if (!params.isEmpty()) {
+                img.setDotsPerMeterY(img.dotsPerMeterY() * params.first()->aspectRatio());
+            }
+        } else if (form->formType() == RGFX_FORM_TYPE) {
+            auto headers = IFFChunk::searchT<RGHDChunk>(form);
+            if (!headers.isEmpty()) {
+                img.setDotsPerMeterY(img.dotsPerMeterY() * headers.first()->aspectRatio());
+            }
+        } else {
+            auto headers = IFFChunk::searchT<BMHDChunk>(form);
+            if (!headers.isEmpty()) {
+                auto xr = headers.first()->xAspectRatio();
+                auto yr = headers.first()->yAspectRatio();
+                if (xr > 0 && yr > 0 && xr > yr) {
+                    img.setDotsPerMeterX(img.dotsPerMeterX() * yr / xr);
+                } else if (xr > 0 && yr > 0 && xr < yr) {
+                    img.setDotsPerMeterY(img.dotsPerMeterY() * xr / yr);
+                }
             }
         }
     }
@@ -327,7 +339,6 @@ bool IFFHandler::readStandardImage(QImage *image)
     // show the first one (I don't have a sample with many images)
     auto headers = IFFChunk::searchT<BMHDChunk>(form);
     if (headers.isEmpty()) {
-        qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readStandardImage(): no supported image found";
         return false;
     }
 
@@ -426,7 +437,6 @@ bool IFFHandler::readMayaImage(QImage *image)
     // show the first one (I don't have a sample with many images)
     auto headers = IFFChunk::searchT<TBHDChunk>(form);
     if (headers.isEmpty()) {
-        qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readMayaImage(): no supported image found";
         return false;
     }
 
@@ -475,6 +485,132 @@ bool IFFHandler::readMayaImage(QImage *image)
     return true;
 }
 
+bool IFFHandler::readCDIImage(QImage *image)
+{
+    auto forms = d->searchForms<FORMChunk>();
+    if (forms.isEmpty()) {
+        return false;
+    }
+    auto cin = qBound(0, currentImageNumber(), int(forms.size() - 1));
+    auto &&form = forms.at(cin);
+
+    // show the first one (I don't have a sample with many images)
+    auto headers = IFFChunk::searchT<IHDRChunk>(form);
+    if (headers.isEmpty()) {
+        return false;
+    }
+
+    // create the image
+    auto &&header = headers.first();
+    auto img = imageAlloc(header->size(), form->format());
+    if (img.isNull()) {
+        qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readCDIImage(): error while allocating the image";
+        return false;
+    }
+
+    // set the palette
+    if (img.format() == QImage::Format_Indexed8) {
+        auto pltes = IFFChunk::searchT<PLTEChunk>(form);
+        if (!pltes.isEmpty()) {
+            img.setColorTable(pltes.first()->palette());
+        }
+    }
+
+    // decoding the image
+    auto bodies = IFFChunk::searchT<IDATChunk>(form);
+    if (bodies.isEmpty()) {
+        img.fill(0);
+    } else {
+        auto &&body = bodies.first();
+        if (!body->resetStrideRead(device())) {
+            qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readCDIImage(): error while reading image data";
+            return false;
+        }
+        auto pars = IFFChunk::searchT<IPARChunk>(form);
+        auto yuvs = IFFChunk::searchT<YUVSChunk>(form);
+        for (auto y = 0, h = img.height(); y < h; ++y) {
+            auto line = reinterpret_cast<char*>(img.scanLine(y));
+            auto ba = body->strideRead(device(), y, header,
+                                       pars.isEmpty() ? nullptr : pars.first(),
+                                       yuvs.isEmpty() ? nullptr : yuvs.first());
+            if (ba.isEmpty()) {
+                qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readCDIImage(): error while reading image scanline";
+                return false;
+            }
+            memcpy(line, ba.constData(), std::min(img.bytesPerLine(), ba.size()));
+        }
+    }
+
+    // set metadata (including image resolution)
+    addMetadata(img, form);
+
+    *image = img;
+    return true;
+}
+
+bool IFFHandler::readRGFXImage(QImage *image)
+{
+    auto forms = d->searchForms<FORMChunk>();
+    if (forms.isEmpty()) {
+        return false;
+    }
+    auto cin = qBound(0, currentImageNumber(), int(forms.size() - 1));
+    auto &&form = forms.at(cin);
+
+    // show the first one (I don't have a sample with many images)
+    auto headers = IFFChunk::searchT<RGHDChunk>(form);
+    if (headers.isEmpty()) {
+        return false;
+    }
+
+    // create the image
+    auto &&header = headers.first();
+    auto img = imageAlloc(header->size(), form->format());
+    if (img.isNull()) {
+        qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readRGFXImage(): error while allocating the image";
+        return false;
+    }
+
+    // set the palette
+    if (img.format() == QImage::Format_Indexed8) {
+        auto pltes = IFFChunk::searchT<RCOLChunk>(form);
+        if (!pltes.isEmpty()) {
+            img.setColorTable(pltes.first()->palette());
+        }
+    }
+
+    // decoding the image
+    auto bodies = IFFChunk::searchT<RBODChunk>(form);
+    if (bodies.isEmpty()) {
+        img.fill(0);
+    } else {
+        auto &&body = bodies.first();
+        if (!body->resetStrideRead(device())) {
+            qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readRGFXImage(): error while reading image data";
+            return false;
+        }
+        auto rcsms = IFFChunk::searchT<RSCMChunk>(form);
+        auto rcols = IFFChunk::searchT<RCOLChunk>(form);
+        for (auto y = 0, h = img.height(); y < h; ++y) {
+            auto line = reinterpret_cast<char*>(img.scanLine(y));
+            auto ba = body->strideRead(device(), y, header,
+                                       rcsms.isEmpty() ? nullptr : rcsms.first(),
+                                       rcols.isEmpty() ? nullptr : rcols.first());
+            if (ba.isEmpty()) {
+                qCWarning(LOG_IFFPLUGIN) << "IFFHandler::readRGFXImage(): error while reading image scanline";
+                return false;
+            }
+            memcpy(line, ba.constData(), std::min(img.bytesPerLine(), ba.size()));
+        }
+    }
+
+    // set metadata (including image resolution)
+    addMetadata(img, form);
+
+    *image = img;
+    return true;
+}
+
 bool IFFHandler::read(QImage *image)
 {
     if (!d->readStructure(device())) {
@@ -490,6 +626,14 @@ bool IFFHandler::read(QImage *image)
         return true;
     }
 
+    if (readCDIImage(image)) {
+        return true;
+    }
+
+    if (readRGFXImage(image)) {
+        return true;
+    }
+
     qCWarning(LOG_IFFPLUGIN) << "IFFHandler::read(): no supported image found";
     return false;
 }

src/imageformats/iff_p.h

@@ -35,6 +35,10 @@ private:
 
     bool readMayaImage(QImage *image);
 
+    bool readCDIImage(QImage *image);
+
+    bool readRGFXImage(QImage *image);
+
 private:
     const QScopedPointer<IFFHandlerPrivate> d;
 };

src/imageformats/jp2.cpp

@@ -253,20 +253,27 @@ public:
     bool jp2ToImage(QImage *img) const
     {
         Q_ASSERT(img->depth() == 8 * sizeof(T) || img->depth() == 32 * sizeof(T));
-        for (qint32 c = 0, cc = m_jp2_image->numcomps; c < cc; ++c) {
-            auto cs = cc == 1 ? 1 : 4;
+        if (img->width() < 1 || img->height() < 1) {
+            return false;
+        }
+        auto maxChannels = qint32(img->bytesPerLine() / sizeof(T) / img->width());
+        for (qint32 c = 0, cc = std::min(qint32(m_jp2_image->numcomps), maxChannels); c < cc; ++c) {
+            auto cs = std::min(cc == 1 ? 1 : 4, maxChannels);
             auto &&jc = m_jp2_image->comps[c];
-            if (jc.data == nullptr)
+            if (jc.data == nullptr) {
                 return false;
-            if (qint32(jc.w) != img->width() || qint32(jc.h) != img->height())
+            }
+            if (qint32(jc.w) != img->width() || qint32(jc.h) != img->height()) {
                 return false;
+            }
 
             // discriminate between int and float (avoid complicating things by creating classes with template specializations)
             if (std::numeric_limits<T>::is_integer) {
-                auto divisor = 1;
-                if (jc.prec > sizeof(T) * 8) {
+                auto divisor = 1ull;
+                auto prec = std::min(size_t(jc.prec), sizeof(*jc.data) * 8);
+                if (prec > sizeof(T) * 8 && prec < 64) {
                     // convert to the wanted precision (e.g. 16-bit -> 8-bit: divisor = 65535 / 255 = 257)
-                    divisor = std::max(1, int(((1ll << jc.prec) - 1) / ((1ll << (sizeof(T) * 8)) - 1)));
+                    divisor = std::max(1ull, (((1ull << prec) - 1) / ((1ull << (sizeof(T) * 8)) - 1)));
                 }
                 for (qint32 y = 0, h = img->height(); y < h; ++y) {
                     auto ptr = reinterpret_cast<T *>(img->scanLine(y));

src/imageformats/jxl.cpp

@@ -258,14 +258,16 @@ bool QJpegXLHandler::countALLFrames()
     bool is_gray = m_basicinfo.num_color_channels == 1 && m_basicinfo.alpha_bits == 0;
     JxlColorEncoding color_encoding;
     if (m_basicinfo.uses_original_profile == JXL_FALSE && m_basicinfo.have_animation == JXL_FALSE) {
-        const JxlCmsInterface *jxlcms = JxlGetDefaultCms();
-        if (jxlcms) {
-            status = JxlDecoderSetCms(m_decoder, *jxlcms);
-            if (status != JXL_DEC_SUCCESS) {
-                qCWarning(LOG_JXLPLUGIN, "JxlDecoderSetCms ERROR");
+        if (!is_gray) {
+            const JxlCmsInterface *jxlcms = JxlGetDefaultCms();
+            if (jxlcms) {
+                status = JxlDecoderSetCms(m_decoder, *jxlcms);
+                if (status != JXL_DEC_SUCCESS) {
+                    qCWarning(LOG_JXLPLUGIN, "JxlDecoderSetCms ERROR");
+                }
+            } else {
+                qCWarning(LOG_JXLPLUGIN, "No JPEG XL CMS Interface");
             }
-        } else {
-            qCWarning(LOG_JXLPLUGIN, "No JPEG XL CMS Interface");
         }
 
         JxlColorEncodingSetToSRGB(&color_encoding, is_gray ? JXL_TRUE : JXL_FALSE);
@@ -853,7 +855,11 @@ bool QJpegXLHandler::write(const QImage &image)
 
     size_t pixel_count = size_t(image.width()) * image.height();
     if (MAX_IMAGE_PIXELS && pixel_count > MAX_IMAGE_PIXELS) {
-        qCWarning(LOG_JXLPLUGIN, "Image (%dx%d) will not be saved because it has more than %d megapixels!", image.width(), image.height(), MAX_IMAGE_PIXELS / 1024 / 1024);
+        qCWarning(LOG_JXLPLUGIN,
+                  "Image (%dx%d) will not be saved because it has more than %d megapixels!",
+                  image.width(),
+                  image.height(),
+                  MAX_IMAGE_PIXELS / 1024 / 1024);
         return false;
     }
 
@@ -1838,17 +1844,20 @@ bool QJpegXLHandler::rewind()
             return false;
         }
 
-        const JxlCmsInterface *jxlcms = JxlGetDefaultCms();
-        if (jxlcms) {
-            status = JxlDecoderSetCms(m_decoder, *jxlcms);
-            if (status != JXL_DEC_SUCCESS) {
-                qCWarning(LOG_JXLPLUGIN, "JxlDecoderSetCms ERROR");
+        bool is_gray = m_basicinfo.num_color_channels == 1 && m_basicinfo.alpha_bits == 0;
+
+        if (!is_gray) {
+            const JxlCmsInterface *jxlcms = JxlGetDefaultCms();
+            if (jxlcms) {
+                status = JxlDecoderSetCms(m_decoder, *jxlcms);
+                if (status != JXL_DEC_SUCCESS) {
+                    qCWarning(LOG_JXLPLUGIN, "JxlDecoderSetCms ERROR");
+                }
+            } else {
+                qCWarning(LOG_JXLPLUGIN, "No JPEG XL CMS Interface");
             }
-        } else {
-            qCWarning(LOG_JXLPLUGIN, "No JPEG XL CMS Interface");
         }
 
-        bool is_gray = m_basicinfo.num_color_channels == 1 && m_basicinfo.alpha_bits == 0;
         JxlColorEncoding color_encoding;
         JxlColorEncodingSetToSRGB(&color_encoding, is_gray ? JXL_TRUE : JXL_FALSE);
         JxlDecoderSetPreferredColorProfile(m_decoder, &color_encoding);
@@ -1999,6 +2008,11 @@ bool QJpegXLHandler::extractBox(QByteArray &output, size_t container_size)
         return false;
     }
 
+    if (rawboxsize > 8388608) { // 8MB limit
+        qCWarning(LOG_JXLPLUGIN, "Skipped decoding of big JXL metadata box");
+        return true;
+    }
+
     output.resize(rawboxsize);
     status = JxlDecoderSetBoxBuffer(m_decoder, reinterpret_cast<uint8_t *>(output.data()), output.size());
     if (status != JXL_DEC_SUCCESS) {
@@ -2012,7 +2026,7 @@ bool QJpegXLHandler::extractBox(QByteArray &output, size_t container_size)
         if (status == JXL_DEC_BOX_NEED_MORE_OUTPUT) {
             size_t bytes_remains = JxlDecoderReleaseBoxBuffer(m_decoder);
 
-            if (output.size() > 4194304) { // approx. 4MB limit for decompressed metadata box
+            if (output.size() > 33554432) { // approx. 32MB (4*8) limit for decompressed metadata box
                 qCWarning(LOG_JXLPLUGIN, "JXL metadata box is too large");
                 m_parseState = ParseJpegXLError;
                 return false;

src/imageformats/psd.cpp

@@ -1017,7 +1017,7 @@ inline void rawChannelCopy(uchar *target, qint32 targetChannels, qint32 targetCh
 
 
 template<class T>
-inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
+inline bool cmykToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
 {
     auto s = reinterpret_cast<const T*>(source);
     auto t = reinterpret_cast<T*>(target);
@@ -1026,7 +1026,7 @@ inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source,
 
     if (sourceChannels < 2) {
         qCDebug(LOG_PSDPLUGIN) << "cmykToRgb: image is not a valid MCH/CMYK!";
-        return;
+        return false;
     }
 
     for (qint32 w = 0; w < width; ++w) {
@@ -1047,6 +1047,7 @@ inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source,
                 *(pt + 3) = std::numeric_limits<T>::max();
         }
     }
+    return true;
 }
 
 inline double finv(double v)
@@ -1066,7 +1067,7 @@ inline double gammaCorrection(double linear)
 }
 
 template<class T>
-inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
+inline bool labToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
 {
     auto s = reinterpret_cast<const T*>(source);
     auto t = reinterpret_cast<T*>(target);
@@ -1075,7 +1076,7 @@ inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, q
 
     if (sourceChannels < 3) {
         qCDebug(LOG_PSDPLUGIN) << "labToRgb: image is not a valid LAB!";
-        return;
+        return false;
     }
 
     for (qint32 w = 0; w < width; ++w) {
@@ -1110,6 +1111,7 @@ inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, q
                 *(pt + 3) = std::numeric_limits<T>::max();
         }
     }
+    return true;
 }
 
 bool readChannel(QByteArray &target, QDataStream &stream, quint32 compressedSize, quint16 compression)
@@ -1450,10 +1452,13 @@ bool PSDHandler::read(QImage *image)
             // Conversion to RGB
             if (header.color_mode == CM_CMYK || header.color_mode == CM_MULTICHANNEL) {
                 if (tmpCmyk.isNull()) {
-                    if (header.depth == 8)
-                        cmykToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
-                    else if (header.depth == 16)
-                        cmykToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
+                    if (header.depth == 8) {
+                        if (!cmykToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
+                            return false;
+                    } else if (header.depth == 16) {
+                        if (!cmykToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
+                            return false;
+                    }
                 } else if (header.depth == 8) {
                     rawChannelsCopyToCMYK<quint8>(tmpCmyk.bits(), 4, psdScanline.data(), header.channel_count, header.width);
                     if (auto rgbPtr = iccConv.convertedScanLine(tmpCmyk, 0))
@@ -1469,10 +1474,13 @@ bool PSDHandler::read(QImage *image)
                 }
             }
             if (header.color_mode == CM_LABCOLOR) {
-                if (header.depth == 8)
-                    labToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
-                else if (header.depth == 16)
-                    labToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
+                if (header.depth == 8) {
+                    if (!labToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
+                        return false;
+                } else if (header.depth == 16) {
+                    if (!labToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
+                        return false;
+                }
             }
             if (header.color_mode == CM_RGB) {
                 if (header.depth == 8)

src/imageformats/rgb.cpp

@@ -319,7 +319,10 @@ bool SGIImagePrivate::readImage(QImage &img)
 
     if (_rle) {
         uint l;
-        _starttab = new quint32[_numrows];
+        _starttab = new (std::nothrow) quint32[_numrows];
+        if (_starttab == nullptr) {
+            return false;
+        }
         for (l = 0; !_stream.atEnd() && l < _numrows; l++) {
             _stream >> _starttab[l];
             _starttab[l] -= 512 + _numrows * 2 * sizeof(quint32);
@@ -331,7 +334,10 @@ bool SGIImagePrivate::readImage(QImage &img)
             _starttab[l] = 0;
         }
 
-        _lengthtab = new quint32[_numrows];
+        _lengthtab = new (std::nothrow) quint32[_numrows];
+        if (_lengthtab == nullptr) {
+            return false;
+        }
         for (l = 0; !_stream.atEnd() && l < _numrows; l++) {
             _stream >> _lengthtab[l];
             if (_stream.status() != QDataStream::Ok) {
@@ -794,7 +800,10 @@ bool SGIImagePrivate::writeImage(const QImage &image)
     _pixmax = 0;
     _colormap = NORMAL;
     _numrows = _ysize * _zsize;
-    _starttab = new quint32[_numrows];
+    _starttab = new (std::nothrow) quint32[_numrows];
+    if (_starttab == nullptr) {
+        return false;
+    }
     _rlemap.setBaseOffset(512 + _numrows * 2 * sizeof(quint32));
 
     if (!scanData(image, tfmt, tcs)) {

src/imageformats/tga.cpp

@@ -731,7 +731,7 @@ static bool LoadTGA(QIODevice *dev, const TgaHeader &tga, QImage &img)
                 if (div == 0)
                     hasAlpha = false;
                 for (int x = x_start; x != x_end; x += x_step) {
-                    const int alpha = hasAlpha ? int((src[3]) << (8 - numAlphaBits)) * 255 / div : 255;
+                    const int alpha = hasAlpha ? int(quint8(src[3]) << (8 - numAlphaBits)) * 255 / div : 255;
                     scanline[x] = qRgba(src[2], src[1], src[0], alpha);
                     src += 4;
                 }