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Diffstat (limited to 'PIL/PcxImagePlugin.py')
| -rw-r--r-- | PIL/PcxImagePlugin.py | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/PIL/PcxImagePlugin.py b/PIL/PcxImagePlugin.py deleted file mode 100644 index 8c0cd11..0000000 --- a/PIL/PcxImagePlugin.py +++ /dev/null @@ -1,167 +0,0 @@ -# -# The Python Imaging Library. -# $Id: PcxImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $ -# -# PCX file handling -# -# This format was originally used by ZSoft's popular PaintBrush -# program for the IBM PC. It is also supported by many MS-DOS and -# Windows applications, including the Windows PaintBrush program in -# Windows 3. -# -# history: -# 1995-09-01 fl Created -# 1996-05-20 fl Fixed RGB support -# 1997-01-03 fl Fixed 2-bit and 4-bit support -# 1999-02-03 fl Fixed 8-bit support (broken in 1.0b1) -# 1999-02-07 fl Added write support -# 2002-06-09 fl Made 2-bit and 4-bit support a bit more robust -# 2002-07-30 fl Seek from to current position, not beginning of file -# 2003-06-03 fl Extract DPI settings (info["dpi"]) -# -# Copyright (c) 1997-2003 by Secret Labs AB. -# Copyright (c) 1995-2003 by Fredrik Lundh. -# -# See the README file for information on usage and redistribution. -# - -__version__ = "0.6" - -import Image, ImageFile, ImagePalette - -def i16(c,o): - return ord(c[o]) + (ord(c[o+1])<<8) - -def _accept(prefix): - return ord(prefix[0]) == 10 and ord(prefix[1]) in [0, 2, 3, 5] - -## -# Image plugin for Paintbrush images. - -class PcxImageFile(ImageFile.ImageFile): - - format = "PCX" - format_description = "Paintbrush" - - def _open(self): - - # header - s = self.fp.read(128) - if not _accept(s): - raise SyntaxError, "not a PCX file" - - # image - bbox = i16(s,4), i16(s,6), i16(s,8)+1, i16(s,10)+1 - if bbox[2] <= bbox[0] or bbox[3] <= bbox[1]: - raise SyntaxError, "bad PCX image size" - - # format - version = ord(s[1]) - bits = ord(s[3]) - planes = ord(s[65]) - stride = i16(s,66) - - self.info["dpi"] = i16(s,12), i16(s,14) - - if bits == 1 and planes == 1: - mode = rawmode = "1" - - elif bits == 1 and planes in (2, 4): - mode = "P" - rawmode = "P;%dL" % planes - self.palette = ImagePalette.raw("RGB", s[16:64]) - - elif version == 5 and bits == 8 and planes == 1: - mode = rawmode = "L" - # FIXME: hey, this doesn't work with the incremental loader !!! - self.fp.seek(-769, 2) - s = self.fp.read(769) - if len(s) == 769 and ord(s[0]) == 12: - # check if the palette is linear greyscale - for i in range(256): - if s[i*3+1:i*3+4] != chr(i)*3: - mode = rawmode = "P" - break - if mode == "P": - self.palette = ImagePalette.raw("RGB", s[1:]) - self.fp.seek(128) - - elif version == 5 and bits == 8 and planes == 3: - mode = "RGB" - rawmode = "RGB;L" - - else: - raise IOError, "unknown PCX mode" - - self.mode = mode - self.size = bbox[2]-bbox[0], bbox[3]-bbox[1] - - bbox = (0, 0) + self.size - - self.tile = [("pcx", bbox, self.fp.tell(), (rawmode, planes * stride))] - -# -------------------------------------------------------------------- -# save PCX files - -SAVE = { - # mode: (version, bits, planes, raw mode) - "1": (2, 1, 1, "1"), - "L": (5, 8, 1, "L"), - "P": (5, 8, 1, "P"), - "RGB": (5, 8, 3, "RGB;L"), -} - -def o16(i): - return chr(i&255) + chr(i>>8&255) - -def _save(im, fp, filename, check=0): - - try: - version, bits, planes, rawmode = SAVE[im.mode] - except KeyError: - raise ValueError, "Cannot save %s images as PCX" % im.mode - - if check: - return check - - # bytes per plane - stride = (im.size[0] * bits + 7) / 8 - - # under windows, we could determine the current screen size with - # "Image.core.display_mode()[1]", but I think that's overkill... - - screen = im.size - - dpi = 100, 100 - - # PCX header - fp.write( - chr(10) + chr(version) + chr(1) + chr(bits) + o16(0) + - o16(0) + o16(im.size[0]-1) + o16(im.size[1]-1) + o16(dpi[0]) + - o16(dpi[1]) + chr(0)*24 + chr(255)*24 + chr(0) + chr(planes) + - o16(stride) + o16(1) + o16(screen[0]) + o16(screen[1]) + - chr(0)*54 - ) - - assert fp.tell() == 128 - - ImageFile._save(im, fp, [("pcx", (0,0)+im.size, 0, - (rawmode, bits*planes))]) - - if im.mode == "P": - # colour palette - fp.write(chr(12)) - fp.write(im.im.getpalette("RGB", "RGB")) # 768 bytes - elif im.mode == "L": - # greyscale palette - fp.write(chr(12)) - for i in range(256): - fp.write(chr(i)*3) - -# -------------------------------------------------------------------- -# registry - -Image.register_open("PCX", PcxImageFile, _accept) -Image.register_save("PCX", _save) - -Image.register_extension("PCX", ".pcx") |