id card generator

1 files changed, 230 insertions, 0 deletions

diff --git a/env/lib/python3.10/site-packages/PIL/SgiImagePlugin.py b/env/lib/python3.10/site-packages/PIL/SgiImagePlugin.py
new file mode 100644
index 0000000..f0207bb
--- /dev/null
+++ b/env/lib/python3.10/site-packages/PIL/SgiImagePlugin.py
@@ -0,0 +1,230 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# SGI image file handling
+#
+# See "The SGI Image File Format (Draft version 0.97)", Paul Haeberli.
+# <ftp://ftp.sgi.com/graphics/SGIIMAGESPEC>
+#
+#
+# History:
+# 2017-22-07 mb   Add RLE decompression
+# 2016-16-10 mb   Add save method without compression
+# 1995-09-10 fl   Created
+#
+# Copyright (c) 2016 by Mickael Bonfill.
+# Copyright (c) 2008 by Karsten Hiddemann.
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1995 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import os
+import struct
+
+from . import Image, ImageFile
+from ._binary import i16be as i16
+from ._binary import o8
+
+
+def _accept(prefix):
+    return len(prefix) >= 2 and i16(prefix) == 474
+
+
+MODES = {
+    (1, 1, 1): "L",
+    (1, 2, 1): "L",
+    (2, 1, 1): "L;16B",
+    (2, 2, 1): "L;16B",
+    (1, 3, 3): "RGB",
+    (2, 3, 3): "RGB;16B",
+    (1, 3, 4): "RGBA",
+    (2, 3, 4): "RGBA;16B",
+}
+
+
+##
+# Image plugin for SGI images.
+class SgiImageFile(ImageFile.ImageFile):
+
+    format = "SGI"
+    format_description = "SGI Image File Format"
+
+    def _open(self):
+
+        # HEAD
+        headlen = 512
+        s = self.fp.read(headlen)
+
+        if not _accept(s):
+            raise ValueError("Not an SGI image file")
+
+        # compression : verbatim or RLE
+        compression = s[2]
+
+        # bpc : 1 or 2 bytes (8bits or 16bits)
+        bpc = s[3]
+
+        # dimension : 1, 2 or 3 (depending on xsize, ysize and zsize)
+        dimension = i16(s, 4)
+
+        # xsize : width
+        xsize = i16(s, 6)
+
+        # ysize : height
+        ysize = i16(s, 8)
+
+        # zsize : channels count
+        zsize = i16(s, 10)
+
+        # layout
+        layout = bpc, dimension, zsize
+
+        # determine mode from bits/zsize
+        rawmode = ""
+        try:
+            rawmode = MODES[layout]
+        except KeyError:
+            pass
+
+        if rawmode == "":
+            raise ValueError("Unsupported SGI image mode")
+
+        self._size = xsize, ysize
+        self.mode = rawmode.split(";")[0]
+        if self.mode == "RGB":
+            self.custom_mimetype = "image/rgb"
+
+        # orientation -1 : scanlines begins at the bottom-left corner
+        orientation = -1
+
+        # decoder info
+        if compression == 0:
+            pagesize = xsize * ysize * bpc
+            if bpc == 2:
+                self.tile = [
+                    ("SGI16", (0, 0) + self.size, headlen, (self.mode, 0, orientation))
+                ]
+            else:
+                self.tile = []
+                offset = headlen
+                for layer in self.mode:
+                    self.tile.append(
+                        ("raw", (0, 0) + self.size, offset, (layer, 0, orientation))
+                    )
+                    offset += pagesize
+        elif compression == 1:
+            self.tile = [
+                ("sgi_rle", (0, 0) + self.size, headlen, (rawmode, orientation, bpc))
+            ]
+
+
+def _save(im, fp, filename):
+    if im.mode != "RGB" and im.mode != "RGBA" and im.mode != "L":
+        raise ValueError("Unsupported SGI image mode")
+
+    # Get the keyword arguments
+    info = im.encoderinfo
+
+    # Byte-per-pixel precision, 1 = 8bits per pixel
+    bpc = info.get("bpc", 1)
+
+    if bpc not in (1, 2):
+        raise ValueError("Unsupported number of bytes per pixel")
+
+    # Flip the image, since the origin of SGI file is the bottom-left corner
+    orientation = -1
+    # Define the file as SGI File Format
+    magic_number = 474
+    # Run-Length Encoding Compression - Unsupported at this time
+    rle = 0
+
+    # Number of dimensions (x,y,z)
+    dim = 3
+    # X Dimension = width / Y Dimension = height
+    x, y = im.size
+    if im.mode == "L" and y == 1:
+        dim = 1
+    elif im.mode == "L":
+        dim = 2
+    # Z Dimension: Number of channels
+    z = len(im.mode)
+
+    if dim == 1 or dim == 2:
+        z = 1
+
+    # assert we've got the right number of bands.
+    if len(im.getbands()) != z:
+        raise ValueError(
+            f"incorrect number of bands in SGI write: {z} vs {len(im.getbands())}"
+        )
+
+    # Minimum Byte value
+    pinmin = 0
+    # Maximum Byte value (255 = 8bits per pixel)
+    pinmax = 255
+    # Image name (79 characters max, truncated below in write)
+    img_name = os.path.splitext(os.path.basename(filename))[0]
+    img_name = img_name.encode("ascii", "ignore")
+    # Standard representation of pixel in the file
+    colormap = 0
+    fp.write(struct.pack(">h", magic_number))
+    fp.write(o8(rle))
+    fp.write(o8(bpc))
+    fp.write(struct.pack(">H", dim))
+    fp.write(struct.pack(">H", x))
+    fp.write(struct.pack(">H", y))
+    fp.write(struct.pack(">H", z))
+    fp.write(struct.pack(">l", pinmin))
+    fp.write(struct.pack(">l", pinmax))
+    fp.write(struct.pack("4s", b""))  # dummy
+    fp.write(struct.pack("79s", img_name))  # truncates to 79 chars
+    fp.write(struct.pack("s", b""))  # force null byte after img_name
+    fp.write(struct.pack(">l", colormap))
+    fp.write(struct.pack("404s", b""))  # dummy
+
+    rawmode = "L"
+    if bpc == 2:
+        rawmode = "L;16B"
+
+    for channel in im.split():
+        fp.write(channel.tobytes("raw", rawmode, 0, orientation))
+
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+class SGI16Decoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        rawmode, stride, orientation = self.args
+        pagesize = self.state.xsize * self.state.ysize
+        zsize = len(self.mode)
+        self.fd.seek(512)
+
+        for band in range(zsize):
+            channel = Image.new("L", (self.state.xsize, self.state.ysize))
+            channel.frombytes(
+                self.fd.read(2 * pagesize), "raw", "L;16B", stride, orientation
+            )
+            self.im.putband(channel.im, band)
+
+        return -1, 0
+
+
+#
+# registry
+
+
+Image.register_decoder("SGI16", SGI16Decoder)
+Image.register_open(SgiImageFile.format, SgiImageFile, _accept)
+Image.register_save(SgiImageFile.format, _save)
+Image.register_mime(SgiImageFile.format, "image/sgi")
+
+Image.register_extensions(SgiImageFile.format, [".bw", ".rgb", ".rgba", ".sgi"])
+
+# End of file