Gecko [ biogenelab.eu ]

Name	Size	Permission
BdfFontFile.py	3.28 KB	-rw-r--r--
BdfFontFile.pyc	2.83 KB	-rw-r--r--
BmpImagePlugin.py	7.26 KB	-rw-r--r--
BmpImagePlugin.pyc	6.13 KB	-rw-r--r--
BufrStubImagePlugin.py	1.47 KB	-rw-r--r--
BufrStubImagePlugin.pyc	1.99 KB	-rw-r--r--
ContainerIO.py	2.54 KB	-rw-r--r--
ContainerIO.pyc	2.07 KB	-rw-r--r--
CurImagePlugin.py	1.9 KB	-rw-r--r--
CurImagePlugin.pyc	1.63 KB	-rw-r--r--
DcxImagePlugin.py	1.76 KB	-rw-r--r--
DcxImagePlugin.pyc	1.89 KB	-rw-r--r--
EpsImagePlugin.py	12.11 KB	-rw-r--r--
EpsImagePlugin.pyc	9.92 KB	-rw-r--r--
ExifTags.py	4.97 KB	-rw-r--r--
ExifTags.pyc	5.27 KB	-rw-r--r--
FitsStubImagePlugin.py	1.61 KB	-rw-r--r--
FitsStubImagePlugin.pyc	2 KB	-rw-r--r--
FliImagePlugin.py	3.38 KB	-rw-r--r--
FliImagePlugin.pyc	3.49 KB	-rw-r--r--
FontFile.py	2.76 KB	-rw-r--r--
FontFile.pyc	2.87 KB	-rw-r--r--
FpxImagePlugin.py	6.21 KB	-rw-r--r--
FpxImagePlugin.pyc	4.62 KB	-rw-r--r--
GbrImagePlugin.py	1.54 KB	-rw-r--r--
GbrImagePlugin.pyc	1.8 KB	-rw-r--r--
GdImageFile.py	2.13 KB	-rw-r--r--
GdImageFile.pyc	1.7 KB	-rw-r--r--
GifImagePlugin.py	16.47 KB	-rw-r--r--
GifImagePlugin.pyc	10.32 KB	-rw-r--r--
GimpGradientFile.py	3.26 KB	-rw-r--r--
GimpGradientFile.pyc	3.68 KB	-rw-r--r--
GimpPaletteFile.py	1.3 KB	-rw-r--r--
GimpPaletteFile.pyc	1.47 KB	-rw-r--r--
GribStubImagePlugin.py	1.47 KB	-rw-r--r--
GribStubImagePlugin.pyc	2 KB	-rw-r--r--
Hdf5StubImagePlugin.py	1.51 KB	-rw-r--r--
Hdf5StubImagePlugin.pyc	2 KB	-rw-r--r--
IcnsImagePlugin.py	8.99 KB	-rw-r--r--
IcnsImagePlugin.pyc	8.71 KB	-rw-r--r--
IcoImagePlugin.py	7.56 KB	-rw-r--r--
IcoImagePlugin.pyc	6.07 KB	-rw-r--r--
ImImagePlugin.py	9.87 KB	-rw-r--r--
ImImagePlugin.pyc	8.01 KB	-rw-r--r--
Image.py	78.54 KB	-rw-r--r--
Image.pyc	73.54 KB	-rw-r--r--
ImageChops.py	6.04 KB	-rw-r--r--
ImageChops.pyc	7.68 KB	-rw-r--r--
ImageCms.py	36.25 KB	-rw-r--r--
ImageCms.pyc	33.86 KB	-rw-r--r--
ImageColor.py	7.79 KB	-rw-r--r--
ImageColor.pyc	7.79 KB	-rw-r--r--
ImageDraw.py	11.39 KB	-rw-r--r--
ImageDraw.pyc	8.63 KB	-rw-r--r--
ImageDraw2.py	3.12 KB	-rw-r--r--
ImageDraw2.pyc	5.06 KB	-rw-r--r--
ImageEnhance.py	3.1 KB	-rw-r--r--
ImageEnhance.pyc	4.11 KB	-rw-r--r--
ImageFile.py	15.65 KB	-rw-r--r--
ImageFile.pyc	11.4 KB	-rw-r--r--
ImageFileIO.py	1022 B	-rw-r--r--
ImageFileIO.pyc	1.22 KB	-rw-r--r--
ImageFilter.py	6.29 KB	-rw-r--r--
ImageFilter.pyc	10.83 KB	-rw-r--r--
ImageFont.py	17.19 KB	-rw-r--r--
ImageFont.pyc	17.14 KB	-rw-r--r--
ImageGrab.py	1.19 KB	-rw-r--r--
ImageGrab.pyc	1.18 KB	-rw-r--r--
ImageMath.py	7.28 KB	-rw-r--r--
ImageMath.pyc	10.63 KB	-rw-r--r--
ImageMode.py	1.27 KB	-rw-r--r--
ImageMode.pyc	1.33 KB	-rw-r--r--
ImageMorph.py	7.78 KB	-rw-r--r--
ImageMorph.pyc	7.99 KB	-rw-r--r--
ImageOps.py	12.92 KB	-rw-r--r--
ImageOps.pyc	12.26 KB	-rw-r--r--
ImagePalette.py	6.25 KB	-rw-r--r--
ImagePalette.pyc	6.76 KB	-rw-r--r--
ImagePath.py	1.2 KB	-rw-r--r--
ImagePath.pyc	1.35 KB	-rw-r--r--
ImageQt.py	2.61 KB	-rw-r--r--
ImageQt.pyc	2.02 KB	-rw-r--r--
ImageSequence.py	939 B	-rw-r--r--
ImageSequence.pyc	1.19 KB	-rw-r--r--
ImageShow.py	4.67 KB	-rw-r--r--
ImageShow.pyc	5.36 KB	-rw-r--r--
ImageStat.py	3.74 KB	-rw-r--r--
ImageStat.pyc	4.53 KB	-rw-r--r--
ImageTransform.py	2.81 KB	-rw-r--r--
ImageTransform.pyc	1.85 KB	-rw-r--r--
ImageWin.py	7.49 KB	-rw-r--r--
ImageWin.pyc	9.69 KB	-rw-r--r--
ImtImagePlugin.py	2.17 KB	-rw-r--r--
ImtImagePlugin.pyc	1.56 KB	-rw-r--r--
IptcImagePlugin.py	6.8 KB	-rw-r--r--
IptcImagePlugin.pyc	5.76 KB	-rw-r--r--
Jpeg2KImagePlugin.py	7.57 KB	-rw-r--r--
Jpeg2KImagePlugin.pyc	6.49 KB	-rw-r--r--
JpegImagePlugin.py	24.43 KB	-rw-r--r--
JpegImagePlugin.pyc	19.47 KB	-rw-r--r--
JpegPresets.py	12.05 KB	-rw-r--r--
JpegPresets.pyc	6.3 KB	-rw-r--r--
McIdasImagePlugin.py	1.71 KB	-rw-r--r--
McIdasImagePlugin.pyc	1.66 KB	-rw-r--r--
MicImagePlugin.py	2.12 KB	-rw-r--r--
MicImagePlugin.pyc	2.08 KB	-rw-r--r--
MpegImagePlugin.py	1.77 KB	-rw-r--r--
MpegImagePlugin.pyc	2.47 KB	-rw-r--r--
MpoImagePlugin.py	2.73 KB	-rw-r--r--
MpoImagePlugin.pyc	2.48 KB	-rw-r--r--
MspImagePlugin.py	2.13 KB	-rw-r--r--
MspImagePlugin.pyc	2.38 KB	-rw-r--r--
OleFileIO-README.md	17.38 KB	-rw-r--r--
OleFileIO.py	87.39 KB	-rwxr-xr-x
OleFileIO.pyc	47.97 KB	-rw-r--r--
PSDraw.py	6.71 KB	-rw-r--r--
PSDraw.pyc	6.55 KB	-rw-r--r--
PaletteFile.py	1.08 KB	-rw-r--r--
PaletteFile.pyc	1.31 KB	-rw-r--r--
PalmImagePlugin.py	9.02 KB	-rw-r--r--
PalmImagePlugin.pyc	9.41 KB	-rw-r--r--
PcdImagePlugin.py	1.77 KB	-rw-r--r--
PcdImagePlugin.pyc	1.72 KB	-rw-r--r--
PcfFontFile.py	6.05 KB	-rw-r--r--
PcfFontFile.pyc	6.18 KB	-rw-r--r--
PcxImagePlugin.py	5.16 KB	-rw-r--r--
PcxImagePlugin.pyc	4.15 KB	-rw-r--r--
PdfImagePlugin.py	5.67 KB	-rw-r--r--
PdfImagePlugin.pyc	5.02 KB	-rw-r--r--
PixarImagePlugin.py	1.58 KB	-rw-r--r--
PixarImagePlugin.pyc	1.24 KB	-rw-r--r--
PngImagePlugin.py	22.14 KB	-rw-r--r--
PngImagePlugin.pyc	20.66 KB	-rw-r--r--
PpmImagePlugin.py	4.47 KB	-rw-r--r--
PpmImagePlugin.pyc	3.84 KB	-rw-r--r--
PsdImagePlugin.py	7.25 KB	-rw-r--r--
PsdImagePlugin.pyc	6.13 KB	-rw-r--r--
PyAccess.py	8.33 KB	-rw-r--r--
PyAccess.pyc	12.66 KB	-rw-r--r--
SgiImagePlugin.py	2.06 KB	-rw-r--r--
SgiImagePlugin.pyc	1.97 KB	-rw-r--r--
SpiderImagePlugin.py	8.99 KB	-rw-r--r--
SpiderImagePlugin.pyc	7.58 KB	-rw-r--r--
SunImagePlugin.py	1.9 KB	-rw-r--r--
SunImagePlugin.pyc	1.98 KB	-rw-r--r--
TarIO.py	1.19 KB	-rw-r--r--
TarIO.pyc	1.07 KB	-rw-r--r--
TgaImagePlugin.py	4.85 KB	-rw-r--r--
TgaImagePlugin.pyc	3.99 KB	-rw-r--r--
TiffImagePlugin.py	41.83 KB	-rw-r--r--
TiffImagePlugin.pyc	30.04 KB	-rw-r--r--
TiffTags.py	7.28 KB	-rw-r--r--
TiffTags.pyc	7.88 KB	-rw-r--r--
WalImageFile.py	5.41 KB	-rw-r--r--
WalImageFile.pyc	2.12 KB	-rw-r--r--
WebPImagePlugin.py	1.92 KB	-rw-r--r--
WebPImagePlugin.pyc	2.69 KB	-rw-r--r--
WmfImagePlugin.py	4.04 KB	-rw-r--r--
WmfImagePlugin.pyc	3.95 KB	-rw-r--r--
XVThumbImagePlugin.py	1.8 KB	-rw-r--r--
XVThumbImagePlugin.pyc	1.59 KB	-rw-r--r--
XbmImagePlugin.py	2.4 KB	-rw-r--r--
XbmImagePlugin.pyc	2.51 KB	-rw-r--r--
XpmImagePlugin.py	3.02 KB	-rw-r--r--
XpmImagePlugin.pyc	2.79 KB	-rw-r--r--
__init__.py	1.52 KB	-rw-r--r--
__init__.pyc	1.24 KB	-rw-r--r--
_binary.py	1.54 KB	-rw-r--r--
_binary.pyc	2.79 KB	-rw-r--r--
_imaging.x86_64-linux-gnu.so	308.97 KB	-rw-r--r--
_imagingcms.x86_64-linux-gnu.s...	16.02 KB	-rw-r--r--
_imagingft.x86_64-linux-gnu.so	20.64 KB	-rw-r--r--
_imagingmath.x86_64-linux-gnu....	18.17 KB	-rw-r--r--
_imagingmorph.x86_64-linux-gnu...	10.27 KB	-rw-r--r--
_util.py	553 B	-rw-r--r--
_util.pyc	1.58 KB	-rw-r--r--
_webp.x86_64-linux-gnu.so	10.35 KB	-rw-r--r--

Code Editor : GifImagePlugin.py

#
# The Python Imaging Library.
# $Id$
#
# GIF file handling
#
# History:
# 1995-09-01 fl   Created
# 1996-12-14 fl   Added interlace support
# 1996-12-30 fl   Added animation support
# 1997-01-05 fl   Added write support, fixed local colour map bug
# 1997-02-23 fl   Make sure to load raster data in getdata()
# 1997-07-05 fl   Support external decoder (0.4)
# 1998-07-09 fl   Handle all modes when saving (0.5)
# 1998-07-15 fl   Renamed offset attribute to avoid name clash
# 2001-04-16 fl   Added rewind support (seek to frame 0) (0.6)
# 2001-04-17 fl   Added palette optimization (0.7)
# 2002-06-06 fl   Added transparency support for save (0.8)
# 2004-02-24 fl   Disable interlacing for small images
#
# Copyright (c) 1997-2004 by Secret Labs AB
# Copyright (c) 1995-2004 by Fredrik Lundh
#
# See the README file for information on usage and redistribution.
#

__version__ = "0.9"

from PIL import Image, ImageFile, ImagePalette, _binary

# --------------------------------------------------------------------
# Helpers

i8 = _binary.i8
i16 = _binary.i16le
o8 = _binary.o8
o16 = _binary.o16le

# --------------------------------------------------------------------
# Identify/read GIF files

def _accept(prefix):
    return prefix[:6] in [b"GIF87a", b"GIF89a"]

##
# Image plugin for GIF images.  This plugin supports both GIF87 and
# GIF89 images.

class GifImageFile(ImageFile.ImageFile):

format = "GIF"
    format_description = "Compuserve GIF"
    global_palette = None

def data(self):
        s = self.fp.read(1)
        if s and i8(s):
            return self.fp.read(i8(s))
        return None

def _open(self):

# Screen
        s = self.fp.read(13)
        if s[:6] not in [b"GIF87a", b"GIF89a"]:
            raise SyntaxError("not a GIF file")

self.info["version"] = s[:6]
        self.size = i16(s[6:]), i16(s[8:])
        self.tile = []
        flags = i8(s[10])
        bits = (flags & 7) + 1

if flags & 128:
            # get global palette
            self.info["background"] = i8(s[11])
            # check if palette contains colour indices
            p = self.fp.read(3 << bits)
            for i in range(0, len(p), 3):
                if not (i//3 == i8(p[i]) == i8(p[i+1]) == i8(p[i+2])):
                    p = ImagePalette.raw("RGB", p)
                    self.global_palette = self.palette = p
                    break

self.__fp = self.fp  # FIXME: hack
        self.__rewind = self.fp.tell()
        self.seek(0)  # get ready to read first frame

def seek(self, frame):

if frame == 0:
            # rewind
            self.__offset = 0
            self.dispose = None
            self.dispose_extent = [0, 0, 0, 0]  # x0, y0, x1, y1
            self.__frame = -1
            self.__fp.seek(self.__rewind)
            self._prev_im = None
            self.disposal_method = 0
        else:
            # ensure that the previous frame was loaded
            if not self.im:
                self.load()

if frame != self.__frame + 1:
            raise ValueError("cannot seek to frame %d" % frame)
        self.__frame = frame

self.tile = []

self.fp = self.__fp
        if self.__offset:
            # backup to last frame
            self.fp.seek(self.__offset)
            while self.data():
                pass
            self.__offset = 0

if self.dispose:
            self.im.paste(self.dispose, self.dispose_extent)

from copy import copy
        self.palette = copy(self.global_palette)

while True:

s = self.fp.read(1)
            if not s or s == b";":
                break

elif s == b"!":
                #
                # extensions
                #
                s = self.fp.read(1)
                block = self.data()
                if i8(s) == 249:
                    #
                    # graphic control extension
                    #
                    flags = i8(block[0])
                    if flags & 1:
                        self.info["transparency"] = i8(block[3])
                    self.info["duration"] = i16(block[1:3]) * 10

# disposal method - find the value of bits 4 - 6
                    dispose_bits = 0b00011100 & flags
                    dispose_bits = dispose_bits >> 2
                    if dispose_bits:
                        # only set the dispose if it is not
                        # unspecified. I'm not sure if this is
                        # correct, but it seems to prevent the last
                        # frame from looking odd for some animations
                        self.disposal_method = dispose_bits
                elif i8(s) == 255:
                    #
                    # application extension
                    #
                    self.info["extension"] = block, self.fp.tell()
                    if block[:11] == b"NETSCAPE2.0":
                        block = self.data()
                        if len(block) >= 3 and i8(block[0]) == 1:
                            self.info["loop"] = i16(block[1:3])
                while self.data():
                    pass

elif s == b",":
                #
                # local image
                #
                s = self.fp.read(9)

# extent
                x0, y0 = i16(s[0:]), i16(s[2:])
                x1, y1 = x0 + i16(s[4:]), y0 + i16(s[6:])
                self.dispose_extent = x0, y0, x1, y1
                flags = i8(s[8])

interlace = (flags & 64) != 0

if flags & 128:
                    bits = (flags & 7) + 1
                    self.palette =\
                        ImagePalette.raw("RGB", self.fp.read(3 << bits))

# image data
                bits = i8(self.fp.read(1))
                self.__offset = self.fp.tell()
                self.tile = [("gif",
                             (x0, y0, x1, y1),
                             self.__offset,
                             (bits, interlace))]
                break

else:
                pass
                # raise IOError, "illegal GIF tag `%x`" % i8(s)

try:
            if self.disposal_method < 2:
                # do not dispose or none specified
                self.dispose = None
            elif self.disposal_method == 2:
                # replace with background colour
                self.dispose = Image.core.fill("P", self.size,
                                               self.info["background"])
            else:
                # replace with previous contents
                if self.im:
                    self.dispose = self.im.copy()

# only dispose the extent in this frame
            if self.dispose:
                self.dispose = self.dispose.crop(self.dispose_extent)
        except (AttributeError, KeyError):
            pass

if not self.tile:
            # self.__fp = None
            raise EOFError("no more images in GIF file")

self.mode = "L"
        if self.palette:
            self.mode = "P"

def tell(self):
        return self.__frame

def load_end(self):
        ImageFile.ImageFile.load_end(self)

# if the disposal method is 'do not dispose', transparent
        # pixels should show the content of the previous frame
        if self._prev_im and self.disposal_method == 1:
            # we do this by pasting the updated area onto the previous
            # frame which we then use as the current image content
            updated = self.im.crop(self.dispose_extent)
            self._prev_im.paste(updated, self.dispose_extent,
                                updated.convert('RGBA'))
            self.im = self._prev_im
        self._prev_im = self.im.copy()

# --------------------------------------------------------------------
# Write GIF files

try:
    import _imaging_gif
except ImportError:
    _imaging_gif = None

RAWMODE = {
    "1": "L",
    "L": "L",
    "P": "P",
}

def _save(im, fp, filename):

if _imaging_gif:
        # call external driver
        try:
            _imaging_gif.save(im, fp, filename)
            return
        except IOError:
            pass  # write uncompressed file

if im.mode in RAWMODE:
        imOut = im
    else:
        # convert on the fly (EXPERIMENTAL -- I'm not sure PIL
        # should automatically convert images on save...)
        if Image.getmodebase(im.mode) == "RGB":
            palette_size = 256
            if im.palette:
                palette_size = len(im.palette.getdata()[1]) // 3
            imOut = im.convert("P", palette=1, colors=palette_size)
        else:
            imOut = im.convert("L")

# header
    try:
        palette = im.encoderinfo["palette"]
    except KeyError:
        palette = None
        im.encoderinfo["optimize"] = im.encoderinfo.get("optimize", True)

header, usedPaletteColors = getheader(imOut, palette, im.encoderinfo)
    for s in header:
        fp.write(s)

flags = 0

try:
        interlace = im.encoderinfo["interlace"]
    except KeyError:
        interlace = 1

# workaround for @PIL153
    if min(im.size) < 16:
        interlace = 0

if interlace:
        flags = flags | 64

try:
        transparency = im.encoderinfo["transparency"]
    except KeyError:
        pass
    else:
        transparency = int(transparency)
        # optimize the block away if transparent color is not used
        transparentColorExists = True
        # adjust the transparency index after optimize
        if usedPaletteColors is not None and len(usedPaletteColors) < 256:
            for i in range(len(usedPaletteColors)):
                if usedPaletteColors[i] == transparency:
                    transparency = i
                    transparentColorExists = True
                    break
                else:
                    transparentColorExists = False

# transparency extension block
        if transparentColorExists:
            fp.write(b"!" +
                     o8(249) +              # extension intro
                     o8(4) +                # length
                     o8(1) +                # transparency info present
                     o16(0) +               # duration
                     o8(transparency)       # transparency index
                     + o8(0))

# local image header
    fp.write(b"," +
             o16(0) + o16(0) +          # bounding box
             o16(im.size[0]) +          # size
             o16(im.size[1]) +
             o8(flags) +                # flags
             o8(8))                     # bits

imOut.encoderconfig = (8, interlace)
    ImageFile._save(imOut, fp, [("gif", (0, 0)+im.size, 0,
                                RAWMODE[imOut.mode])])

fp.write(b"\0")  # end of image data

fp.write(b";")  # end of file

try:
        fp.flush()
    except:
        pass

def _save_netpbm(im, fp, filename):

#
    # If you need real GIF compression and/or RGB quantization, you
    # can use the external NETPBM/PBMPLUS utilities.  See comments
    # below for information on how to enable this.

import os
    from subprocess import Popen, check_call, PIPE, CalledProcessError
    import tempfile
    file = im._dump()

if im.mode != "RGB":
        with open(filename, 'wb') as f:
            stderr = tempfile.TemporaryFile()
            check_call(["ppmtogif", file], stdout=f, stderr=stderr)
    else:
        with open(filename, 'wb') as f:

# Pipe ppmquant output into ppmtogif
            # "ppmquant 256 %s | ppmtogif > %s" % (file, filename)
            quant_cmd = ["ppmquant", "256", file]
            togif_cmd = ["ppmtogif"]
            stderr = tempfile.TemporaryFile()
            quant_proc = Popen(quant_cmd, stdout=PIPE, stderr=stderr)
            stderr = tempfile.TemporaryFile()
            togif_proc = Popen(togif_cmd, stdin=quant_proc.stdout, stdout=f,
                               stderr=stderr)

# Allow ppmquant to receive SIGPIPE if ppmtogif exits
            quant_proc.stdout.close()

retcode = quant_proc.wait()
            if retcode:
                raise CalledProcessError(retcode, quant_cmd)

retcode = togif_proc.wait()
            if retcode:
                raise CalledProcessError(retcode, togif_cmd)

try:
        os.unlink(file)
    except:
        pass

# --------------------------------------------------------------------
# GIF utilities

def getheader(im, palette=None, info=None):
    """Return a list of strings representing a GIF header"""

optimize = info and info.get("optimize", 0)

# Header Block
    # http://www.matthewflickinger.com/lab/whatsinagif/bits_and_bytes.asp
    header = [
        b"GIF87a" +             # signature + version
        o16(im.size[0]) +       # canvas width
        o16(im.size[1])         # canvas height
    ]

if im.mode == "P":
        if palette and isinstance(palette, bytes):
            sourcePalette = palette[:768]
        else:
            sourcePalette = im.im.getpalette("RGB")[:768]
    else:  # L-mode
        if palette and isinstance(palette, bytes):
            sourcePalette = palette[:768]
        else:
            sourcePalette = bytearray([i//3 for i in range(768)])

usedPaletteColors = paletteBytes = None

if optimize:
        usedPaletteColors = []

# check which colors are used
        i = 0
        for count in im.histogram():
            if count:
                usedPaletteColors.append(i)
            i += 1

# create the new palette if not every color is used
        if len(usedPaletteColors) < 256:
            paletteBytes = b""
            newPositions = {}

i = 0
            # pick only the used colors from the palette
            for oldPosition in usedPaletteColors:
                paletteBytes += sourcePalette[oldPosition*3:oldPosition*3+3]
                newPositions[oldPosition] = i
                i += 1

# replace the palette color id of all pixel with the new id
            imageBytes = bytearray(im.tobytes())
            for i in range(len(imageBytes)):
                imageBytes[i] = newPositions[imageBytes[i]]
            im.frombytes(bytes(imageBytes))
            newPaletteBytes = (paletteBytes +
                               (768 - len(paletteBytes)) * b'\x00')
            im.putpalette(newPaletteBytes)
            im.palette = ImagePalette.ImagePalette("RGB", palette=paletteBytes,
                                                   size=len(paletteBytes))

if not paletteBytes:
        paletteBytes = sourcePalette

# Logical Screen Descriptor
    # calculate the palette size for the header
    import math
    colorTableSize = int(math.ceil(math.log(len(paletteBytes)//3, 2)))-1
    if colorTableSize < 0:
        colorTableSize = 0
    # size of global color table + global color table flag
    header.append(o8(colorTableSize + 128))
    # background + reserved/aspect
    header.append(o8(0) + o8(0))
    # end of Logical Screen Descriptor

# add the missing amount of bytes
    # the palette has to be 2<<n in size
    actualTargetSizeDiff = (2 << colorTableSize) - len(paletteBytes)//3
    if actualTargetSizeDiff > 0:
        paletteBytes += o8(0) * 3 * actualTargetSizeDiff

# Header + Logical Screen Descriptor + Global Color Table
    header.append(paletteBytes)
    return header, usedPaletteColors

def getdata(im, offset=(0, 0), **params):
    """Return a list of strings representing this image.
       The first string is a local image header, the rest contains
       encoded image data."""

class collector:
        data = []

def write(self, data):
            self.data.append(data)

im.load()  # make sure raster data is available

fp = collector()

try:
        im.encoderinfo = params

# local image header
        fp.write(b"," +
                 o16(offset[0]) +       # offset
                 o16(offset[1]) +
                 o16(im.size[0]) +      # size
                 o16(im.size[1]) +
                 o8(0) +                # flags
                 o8(8))                 # bits

ImageFile._save(im, fp, [("gif", (0, 0)+im.size, 0, RAWMODE[im.mode])])

fp.write(b"\0")  # end of image data

finally:
        del im.encoderinfo

return fp.data

# --------------------------------------------------------------------
# Registry

Image.register_open(GifImageFile.format, GifImageFile, _accept)
Image.register_save(GifImageFile.format, _save)
Image.register_extension(GifImageFile.format, ".gif")
Image.register_mime(GifImageFile.format, "image/gif")

#
# Uncomment the following line if you wish to use NETPBM/PBMPLUS
# instead of the built-in "uncompressed" GIF encoder

# Image.register_save(GifImageFile.format, _save_netpbm)

${this.title}

Code Editor : GifImagePlugin.py