Merge branch 'main' into closed

CHANGES.rst

@@ -5,6 +5,18 @@ Changelog (Pillow)
 9.5.0 (unreleased)
 ------------------
 
+- Close OleFileIO instance when closing or exiting FPX or MIC #7005
+  [radarhere]
+
+- Added __int__ to IFDRational for Python >= 3.11 #6998
+  [radarhere]
+
+- Added memoryview support to Dib.frombytes() #6988
+  [radarhere, nulano]
+
+- Close file pointer copy in the libtiff encoder if still open #6986
+  [fcarron, radarhere]
+
 - Raise an error if ImageDraw co-ordinates are incorrectly ordered #6978
   [radarhere]
 

Tests/helper.py

@@ -20,7 +20,7 @@ logger = logging.getLogger(__name__)
 
 HAS_UPLOADER = False
 
-if os.environ.get("SHOW_ERRORS", None):
+if os.environ.get("SHOW_ERRORS"):
     # local img.show for errors.
     HAS_UPLOADER = True
 
@@ -271,7 +271,7 @@ def netpbm_available():
 
 def magick_command():
     if sys.platform == "win32":
-        magickhome = os.environ.get("MAGICK_HOME", "")
+        magickhome = os.environ.get("MAGICK_HOME")
         if magickhome:
             imagemagick = [os.path.join(magickhome, "convert.exe")]
             graphicsmagick = [os.path.join(magickhome, "gm.exe"), "convert"]

Tests/test_file_bufrstub.py

@@ -56,6 +56,7 @@ def test_handler(tmp_path):
 
         def load(self, im):
             self.loaded = True
+            im.fp.close()
             return Image.new("RGB", (1, 1))
 
         def save(self, im, fp, filename):

Tests/test_file_fits.py

@@ -60,6 +60,7 @@ def test_stub_deprecated():
 
         def load(self, im):
             self.loaded = True
+            im.fp.close()
             return Image.new("RGB", (1, 1))
 
     handler = Handler()

Tests/test_file_fpx.py

@@ -18,6 +18,16 @@ def test_sanity():
         assert_image_equal_tofile(im, "Tests/images/input_bw_one_band.png")
 
 
+def test_close():
+    with Image.open("Tests/images/input_bw_one_band.fpx") as im:
+        pass
+    assert im.ole.fp.closed
+
+    im = Image.open("Tests/images/input_bw_one_band.fpx")
+    im.close()
+    assert im.ole.fp.closed
+
+
 def test_invalid_file():
     # Test an invalid OLE file
     invalid_file = "Tests/images/flower.jpg"

Tests/test_file_gribstub.py

@@ -56,6 +56,7 @@ def test_handler(tmp_path):
 
         def load(self, im):
             self.loaded = True
+            im.fp.close()
             return Image.new("RGB", (1, 1))
 
         def save(self, im, fp, filename):

Tests/test_file_hdf5stub.py

@@ -57,6 +57,7 @@ def test_handler(tmp_path):
 
         def load(self, im):
             self.loaded = True
+            im.fp.close()
             return Image.new("RGB", (1, 1))
 
         def save(self, im, fp, filename):

Tests/test_file_libtiff.py

@@ -984,6 +984,36 @@ class TestFileLibTiff(LibTiffTestCase):
         ) as im:
             assert_image_equal_tofile(im, "Tests/images/old-style-jpeg-compression.png")
 
+    @pytest.mark.parametrize(
+        "file_name, mode, size, tile",
+        [
+            (
+                "tiff_wrong_bits_per_sample.tiff",
+                "RGBA",
+                (52, 53),
+                [("raw", (0, 0, 52, 53), 160, ("RGBA", 0, 1))],
+            ),
+            (
+                "tiff_wrong_bits_per_sample_2.tiff",
+                "RGB",
+                (16, 16),
+                [("raw", (0, 0, 16, 16), 8, ("RGB", 0, 1))],
+            ),
+            (
+                "tiff_wrong_bits_per_sample_3.tiff",
+                "RGBA",
+                (512, 256),
+                [("libtiff", (0, 0, 512, 256), 0, ("RGBA", "tiff_lzw", False, 48782))],
+            ),
+        ],
+    )
+    def test_wrong_bits_per_sample(self, file_name, mode, size, tile):
+        with Image.open("Tests/images/" + file_name) as im:
+            assert im.mode == mode
+            assert im.size == size
+            assert im.tile == tile
+            im.load()
+
     def test_no_rows_per_strip(self):
         # This image does not have a RowsPerStrip TIFF tag
         infile = "Tests/images/no_rows_per_strip.tif"
@@ -1071,3 +1101,21 @@ class TestFileLibTiff(LibTiffTestCase):
         out = str(tmp_path / "temp.tif")
         for _ in range(10000):
             im.save(out, compression="jpeg")
+
+    @pytest.mark.parametrize(
+        "path, sizes",
+        (
+            ("Tests/images/hopper.tif", ()),
+            ("Tests/images/child_ifd.tiff", (16, 8)),
+            ("Tests/images/child_ifd_jpeg.tiff", (20,)),
+        ),
+    )
+    def test_get_child_images(self, path, sizes):
+        with Image.open(path) as im:
+            ims = im.get_child_images()
+
+        assert len(ims) == len(sizes)
+        for i, im in enumerate(ims):
+            w = sizes[i]
+            expected = Image.new("RGB", (w, w), "#f00")
+            assert_image_similar(im, expected, 1)

Tests/test_file_mic.py

@@ -51,6 +51,16 @@ def test_seek():
         assert im.tell() == 0
 
 
+def test_close():
+    with Image.open(TEST_FILE) as im:
+        pass
+    assert im.ole.fp.closed
+
+    im = Image.open(TEST_FILE)
+    im.close()
+    assert im.ole.fp.closed
+
+
 def test_invalid_file():
     # Test an invalid OLE file
     invalid_file = "Tests/images/flower.jpg"

Tests/test_file_pdf.py

@@ -8,7 +8,7 @@ import pytest
 
 from PIL import Image, PdfParser, features
 
-from .helper import hopper, mark_if_feature_version
+from .helper import hopper, mark_if_feature_version, skip_unless_feature
 
 
 def helper_save_as_pdf(tmp_path, mode, **kwargs):
@@ -42,6 +42,11 @@ def test_save(tmp_path, mode):
     helper_save_as_pdf(tmp_path, mode)
 
 
+@skip_unless_feature("jpg_2000")
+def test_save_rgba(tmp_path):
+    helper_save_as_pdf(tmp_path, "RGBA")
+
+
 def test_monochrome(tmp_path):
     # Arrange
     mode = "1"

Tests/test_file_qoi.py

@@ -0,0 +1,28 @@
+import pytest
+
+from PIL import Image, QoiImagePlugin
+
+from .helper import assert_image_equal_tofile, assert_image_similar_tofile
+
+
+def test_sanity():
+    with Image.open("Tests/images/hopper.qoi") as im:
+        assert im.mode == "RGB"
+        assert im.size == (128, 128)
+        assert im.format == "QOI"
+
+        assert_image_equal_tofile(im, "Tests/images/hopper.png")
+
+    with Image.open("Tests/images/pil123rgba.qoi") as im:
+        assert im.mode == "RGBA"
+        assert im.size == (162, 150)
+        assert im.format == "QOI"
+
+        assert_image_similar_tofile(im, "Tests/images/pil123rgba.png", 0.03)
+
+
+def test_invalid_file():
+    invalid_file = "Tests/images/flower.jpg"
+
+    with pytest.raises(SyntaxError):
+        QoiImagePlugin.QoiImageFile(invalid_file)

Tests/test_file_tiff.py

@@ -84,24 +84,6 @@ class TestFileTiff:
             with Image.open("Tests/images/multipage.tiff") as im:
                 im.load()
 
-    @pytest.mark.parametrize(
-        "path, sizes",
-        (
-            ("Tests/images/hopper.tif", ()),
-            ("Tests/images/child_ifd.tiff", (16, 8)),
-            ("Tests/images/child_ifd_jpeg.tiff", (20,)),
-        ),
-    )
-    def test_get_child_images(self, path, sizes):
-        with Image.open(path) as im:
-            ims = im.get_child_images()
-
-        assert len(ims) == len(sizes)
-        for i, im in enumerate(ims):
-            w = sizes[i]
-            expected = Image.new("RGB", (w, w), "#f00")
-            assert_image_similar(im, expected, 1)
-
     def test_mac_tiff(self):
         # Read RGBa images from macOS [@PIL136]
 
@@ -118,36 +100,6 @@ class TestFileTiff:
         with Image.open("Tests/images/hopper_bigtiff.tif") as im:
             assert_image_equal_tofile(im, "Tests/images/hopper.tif")
 
-    @pytest.mark.parametrize(
-        "file_name,mode,size,tile",
-        [
-            (
-                "tiff_wrong_bits_per_sample.tiff",
-                "RGBA",
-                (52, 53),
-                [("raw", (0, 0, 52, 53), 160, ("RGBA", 0, 1))],
-            ),
-            (
-                "tiff_wrong_bits_per_sample_2.tiff",
-                "RGB",
-                (16, 16),
-                [("raw", (0, 0, 16, 16), 8, ("RGB", 0, 1))],
-            ),
-            (
-                "tiff_wrong_bits_per_sample_3.tiff",
-                "RGBA",
-                (512, 256),
-                [("libtiff", (0, 0, 512, 256), 0, ("RGBA", "tiff_lzw", False, 48782))],
-            ),
-        ],
-    )
-    def test_wrong_bits_per_sample(self, file_name, mode, size, tile):
-        with Image.open("Tests/images/" + file_name) as im:
-            assert im.mode == mode
-            assert im.size == size
-            assert im.tile == tile
-            im.load()
-
     def test_set_legacy_api(self):
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         with pytest.raises(Exception) as e:

Tests/test_image_convert.py

@@ -254,17 +254,6 @@ def test_p2pa_palette():
     assert im_pa.getpalette() == im.getpalette()
 
 
-@pytest.mark.parametrize("mode", ("RGB", "RGBA", "RGBX"))
-def test_rgb_lab(mode):
-    im = Image.new(mode, (1, 1))
-    converted_im = im.convert("LAB")
-    assert converted_im.getpixel((0, 0)) == (0, 128, 128)
-
-    im = Image.new("LAB", (1, 1), (255, 0, 0))
-    converted_im = im.convert(mode)
-    assert converted_im.getpixel((0, 0))[:3] == (0, 255, 255)
-
-
 def test_matrix_illegal_conversion():
     # Arrange
     im = hopper("CMYK")

Tests/test_imagecms.py

@@ -625,3 +625,14 @@ def test_constants_deprecation():
         for name in enum.__members__:
             with pytest.warns(DeprecationWarning):
                 assert getattr(ImageCms, prefix + name) == enum[name]
+
+
+@pytest.mark.parametrize("mode", ("RGB", "RGBA", "RGBX"))
+def test_rgb_lab(mode):
+    im = Image.new(mode, (1, 1))
+    converted_im = im.convert("LAB")
+    assert converted_im.getpixel((0, 0)) == (0, 128, 128)
+
+    im = Image.new("LAB", (1, 1), (255, 0, 0))
+    converted_im = im.convert(mode)
+    assert converted_im.getpixel((0, 0))[:3] == (0, 255, 255)

Tests/test_imageshow.py

@@ -55,8 +55,8 @@ def test_show_without_viewers():
     viewers = ImageShow._viewers
     ImageShow._viewers = []
 
-    im = hopper()
+    with hopper() as im:
-    assert not ImageShow.show(im)
+        assert not ImageShow.show(im)
 
     ImageShow._viewers = viewers
 

Tests/test_imagewin.py

@@ -100,8 +100,11 @@ class TestImageWinDib:
         # Act
         # Make one the same as the using tobytes()/frombytes()
         test_buffer = dib1.tobytes()
-        dib2.frombytes(test_buffer)
+        for datatype in ("bytes", "memoryview"):
+            if datatype == "memoryview":
+                test_buffer = memoryview(test_buffer)
+            dib2.frombytes(test_buffer)
 
-        # Assert
+            # Assert
-        # Confirm they're the same
+            # Confirm they're the same
-        assert dib1.tobytes() == dib2.tobytes()
+            assert dib1.tobytes() == dib2.tobytes()

depends/install_imagequant.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # install libimagequant
 
-archive=libimagequant-4.1.0
+archive=libimagequant-4.1.1
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 

docs/handbook/image-file-formats.rst

@@ -1457,8 +1457,13 @@ PDF
 ^^^
 
 Pillow can write PDF (Acrobat) images. Such images are written as binary PDF 1.4
-files, using either JPEG or HEX encoding depending on the image mode (and
+files. Different encoding methods are used, depending on the image mode.
-whether JPEG support is available or not).
+
+* 1 mode images are saved using TIFF encoding, or JPEG encoding if libtiff support is
+  unavailable
+* L, RGB and CMYK mode images use JPEG encoding
+* P mode images use HEX encoding
+* RGBA mode images use JPEG2000 encoding
 
 .. _pdf-saving:
 
@@ -1544,6 +1549,13 @@ The :py:meth:`~PIL.Image.Image.save` method can take the following keyword argum
 
     .. versionadded:: 5.3.0
 
+QOI
+^^^
+
+.. versionadded:: 9.5.0
+
+Pillow identifies and reads images in Quite OK Image format.
+
 XV Thumbnails
 ^^^^^^^^^^^^^
 

docs/installation.rst

@@ -169,7 +169,7 @@ Many of Pillow's features require external libraries:
 
 * **libimagequant** provides improved color quantization
 
-  * Pillow has been tested with libimagequant **2.6-4.1**
+  * Pillow has been tested with libimagequant **2.6-4.1.1**
   * Libimagequant is licensed GPLv3, which is more restrictive than
     the Pillow license, therefore we will not be distributing binaries
     with libimagequant support enabled.

docs/releasenotes/9.5.0.rst

@@ -28,6 +28,11 @@ TODO
 API Additions
 =============
 
+QOI file format
+^^^^^^^^^^^^^^^
+
+Pillow can now read images in Quite OK Image format.
+
 Added ``closed`` property to images
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -61,7 +66,7 @@ TODO
 Other Changes
 =============
 
-TODO
+Added support for saving PDFs in RGBA mode
-^^^^
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-TODO
+Using the JPXDecode filter, PDFs can now be saved in RGBA mode.

setup.py

@@ -242,7 +242,9 @@ def _find_include_dir(self, dirname, include):
             return subdir
 
 
-def _cmd_exists(cmd):
+def _cmd_exists(cmd: str) -> bool:
+    if "PATH" not in os.environ:
+        return False
     return any(
         os.access(os.path.join(path, cmd), os.X_OK)
         for path in os.environ["PATH"].split(os.pathsep)
@@ -570,9 +572,7 @@ class pil_build_ext(build_ext):
         ):
             for dirname in _find_library_dirs_ldconfig():
                 _add_directory(library_dirs, dirname)
-            if sys.platform.startswith("linux") and os.environ.get(
+            if sys.platform.startswith("linux") and os.environ.get("ANDROID_ROOT"):
-                "ANDROID_ROOT", None
-            ):
                 # termux support for android.
                 # system libraries (zlib) are installed in /system/lib
                 # headers are at $PREFIX/include

src/PIL/FpxImagePlugin.py

@@ -235,6 +235,14 @@ class FpxImageFile(ImageFile.ImageFile):
 
         return ImageFile.ImageFile.load(self)
 
+    def close(self):
+        self.ole.close()
+        super().close()
+
+    def __exit__(self, *args):
+        self.ole.close()
+        super().__exit__()
+
 
 #
 # --------------------------------------------------------------------

src/PIL/ImageFont.py

@@ -1012,7 +1012,7 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
             if windir:
                 dirs.append(os.path.join(windir, "fonts"))
         elif sys.platform in ("linux", "linux2"):
-            lindirs = os.environ.get("XDG_DATA_DIRS", "")
+            lindirs = os.environ.get("XDG_DATA_DIRS")
             if not lindirs:
                 # According to the freedesktop spec, XDG_DATA_DIRS should
                 # default to /usr/share

src/PIL/MicImagePlugin.py

@@ -89,6 +89,14 @@ class MicImageFile(TiffImagePlugin.TiffImageFile):
     def tell(self):
         return self.frame
 
+    def close(self):
+        self.ole.close()
+        super().close()
+
+    def __exit__(self, *args):
+        self.ole.close()
+        super().__exit__()
+
 
 #
 # --------------------------------------------------------------------

src/PIL/PdfImagePlugin.py

@@ -173,6 +173,10 @@ def _save(im, fp, filename, save_all=False):
                 filter = "DCTDecode"
                 colorspace = PdfParser.PdfName("DeviceRGB")
                 procset = "ImageC"  # color images
+            elif im.mode == "RGBA":
+                filter = "JPXDecode"
+                colorspace = PdfParser.PdfName("DeviceRGB")
+                procset = "ImageC"  # color images
             elif im.mode == "CMYK":
                 filter = "DCTDecode"
                 colorspace = PdfParser.PdfName("DeviceCMYK")
@@ -199,6 +203,8 @@ def _save(im, fp, filename, save_all=False):
                 )
             elif filter == "DCTDecode":
                 Image.SAVE["JPEG"](im, op, filename)
+            elif filter == "JPXDecode":
+                Image.SAVE["JPEG2000"](im, op, filename)
             elif filter == "FlateDecode":
                 ImageFile._save(im, op, [("zip", (0, 0) + im.size, 0, im.mode)])
             elif filter == "RunLengthDecode":

src/PIL/QoiImagePlugin.py

@@ -0,0 +1,105 @@
+#
+# The Python Imaging Library.
+#
+# QOI support for PIL
+#
+# See the README file for information on usage and redistribution.
+#
+
+import os
+
+from . import Image, ImageFile
+from ._binary import i32be as i32
+from ._binary import o8
+
+
+def _accept(prefix):
+    return prefix[:4] == b"qoif"
+
+
+class QoiImageFile(ImageFile.ImageFile):
+    format = "QOI"
+    format_description = "Quite OK Image"
+
+    def _open(self):
+        if not _accept(self.fp.read(4)):
+            msg = "not a QOI file"
+            raise SyntaxError(msg)
+
+        self._size = tuple(i32(self.fp.read(4)) for i in range(2))
+
+        channels = self.fp.read(1)[0]
+        self.mode = "RGB" if channels == 3 else "RGBA"
+
+        self.fp.seek(1, os.SEEK_CUR)  # colorspace
+        self.tile = [("qoi", (0, 0) + self._size, self.fp.tell(), None)]
+
+
+class QoiDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def _add_to_previous_pixels(self, value):
+        self._previous_pixel = value
+
+        r, g, b, a = value
+        hash_value = (r * 3 + g * 5 + b * 7 + a * 11) % 64
+        self._previously_seen_pixels[hash_value] = value
+
+    def decode(self, buffer):
+        self._previously_seen_pixels = {}
+        self._previous_pixel = None
+        self._add_to_previous_pixels(b"".join(o8(i) for i in (0, 0, 0, 255)))
+
+        data = bytearray()
+        bands = Image.getmodebands(self.mode)
+        while len(data) < self.state.xsize * self.state.ysize * bands:
+            byte = self.fd.read(1)[0]
+            if byte == 0b11111110:  # QOI_OP_RGB
+                value = self.fd.read(3) + o8(255)
+            elif byte == 0b11111111:  # QOI_OP_RGBA
+                value = self.fd.read(4)
+            else:
+                op = byte >> 6
+                if op == 0:  # QOI_OP_INDEX
+                    op_index = byte & 0b00111111
+                    value = self._previously_seen_pixels.get(op_index, (0, 0, 0, 0))
+                elif op == 1:  # QOI_OP_DIFF
+                    value = (
+                        (self._previous_pixel[0] + ((byte & 0b00110000) >> 4) - 2)
+                        % 256,
+                        (self._previous_pixel[1] + ((byte & 0b00001100) >> 2) - 2)
+                        % 256,
+                        (self._previous_pixel[2] + (byte & 0b00000011) - 2) % 256,
+                    )
+                    value += (self._previous_pixel[3],)
+                elif op == 2:  # QOI_OP_LUMA
+                    second_byte = self.fd.read(1)[0]
+                    diff_green = (byte & 0b00111111) - 32
+                    diff_red = ((second_byte & 0b11110000) >> 4) - 8
+                    diff_blue = (second_byte & 0b00001111) - 8
+
+                    value = tuple(
+                        (self._previous_pixel[i] + diff_green + diff) % 256
+                        for i, diff in enumerate((diff_red, 0, diff_blue))
+                    )
+                    value += (self._previous_pixel[3],)
+                elif op == 3:  # QOI_OP_RUN
+                    run_length = (byte & 0b00111111) + 1
+                    value = self._previous_pixel
+                    if bands == 3:
+                        value = value[:3]
+                    data += value * run_length
+                    continue
+                value = b"".join(o8(i) for i in value)
+            self._add_to_previous_pixels(value)
+
+            if bands == 3:
+                value = value[:3]
+            data += value
+        self.set_as_raw(bytes(data))
+        return -1, 0
+
+
+Image.register_open(QoiImageFile.format, QoiImageFile, _accept)
+Image.register_decoder("qoi", QoiDecoder)
+Image.register_extension(QoiImageFile.format, ".qoi")

src/PIL/TiffImagePlugin.py

@@ -425,6 +425,9 @@ class IFDRational(Rational):
     __ceil__ = _delegate("__ceil__")
     __floor__ = _delegate("__floor__")
     __round__ = _delegate("__round__")
+    # Python >= 3.11
+    if hasattr(Fraction, "__int__"):
+        __int__ = _delegate("__int__")
 
 
 class ImageFileDirectory_v2(MutableMapping):

src/PIL/__init__.py

@@ -59,6 +59,7 @@ _plugins = [
     "PngImagePlugin",
     "PpmImagePlugin",
     "PsdImagePlugin",
+    "QoiImagePlugin",
     "SgiImagePlugin",
     "SpiderImagePlugin",
     "SunImagePlugin",

src/_webp.c

@@ -955,6 +955,13 @@ addTransparencyFlagToModule(PyObject *m) {
 
 static int
 setup_module(PyObject *m) {
+#ifdef HAVE_WEBPANIM
+    /* Ready object types */
+    if (PyType_Ready(&WebPAnimDecoder_Type) < 0 ||
+        PyType_Ready(&WebPAnimEncoder_Type) < 0) {
+        return -1;
+    }
+#endif
     PyObject *d = PyModule_GetDict(m);
     addMuxFlagToModule(m);
     addAnimFlagToModule(m);
@@ -963,13 +970,6 @@ setup_module(PyObject *m) {
     PyDict_SetItemString(
         d, "webpdecoder_version", PyUnicode_FromString(WebPDecoderVersion_str()));
 
-#ifdef HAVE_WEBPANIM
-    /* Ready object types */
-    if (PyType_Ready(&WebPAnimDecoder_Type) < 0 ||
-        PyType_Ready(&WebPAnimEncoder_Type) < 0) {
-        return -1;
-    }
-#endif
     return 0;
 }
 

src/display.c

@@ -195,20 +195,21 @@ _releasedc(ImagingDisplayObject *display, PyObject *args) {
 
 static PyObject *
 _frombytes(ImagingDisplayObject *display, PyObject *args) {
-    char *ptr;
+    Py_buffer buffer;
-    Py_ssize_t bytes;
 
-    if (!PyArg_ParseTuple(args, "y#:frombytes", &ptr, &bytes)) {
+    if (!PyArg_ParseTuple(args, "y*:frombytes", &buffer)) {
         return NULL;
     }
 
-    if (display->dib->ysize * display->dib->linesize != bytes) {
+    if (display->dib->ysize * display->dib->linesize != buffer.len) {
+        PyBuffer_Release(&buffer);
         PyErr_SetString(PyExc_ValueError, "wrong size");
         return NULL;
     }
 
-    memcpy(display->dib->bits, ptr, bytes);
+    memcpy(display->dib->bits, buffer.buf, buffer.len);
 
+    PyBuffer_Release(&buffer);
     Py_INCREF(Py_None);
     return Py_None;
 }

src/libImaging/Jpeg2KEncode.c

@@ -487,6 +487,10 @@ j2k_encode_entry(Imaging im, ImagingCodecState state) {
         goto quick_exit;
     }
 
+    if (strcmp(im->mode, "RGBA") == 0) {
+        image->comps[3].alpha = 1;
+    }
+
     opj_set_error_handler(codec, j2k_error, context);
     opj_set_info_handler(codec, j2k_warn, context);
     opj_set_warning_handler(codec, j2k_warn, context);