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author | Keshav Sharma <keshav7890@gmail.com> | 2011-07-03 11:22:14 (GMT) |
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committer | Keshav Sharma <keshav7890@gmail.com> | 2011-07-03 11:22:14 (GMT) |
commit | ca10d560496dc9f6edde8b422fe591c96c175a6d (patch) | |
tree | 5efdf45be57028217d8f742651301ec234824401 /PIL/PalmImagePlugin.py |
added activity folder
Diffstat (limited to 'PIL/PalmImagePlugin.py')
-rw-r--r-- | PIL/PalmImagePlugin.py | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/PIL/PalmImagePlugin.py b/PIL/PalmImagePlugin.py new file mode 100644 index 0000000..19f0c2f --- /dev/null +++ b/PIL/PalmImagePlugin.py @@ -0,0 +1,226 @@ +# +# The Python Imaging Library. +# $Id: PalmImagePlugin.py 2438 2005-05-25 21:09:48Z Fredrik $ +# + +## +# Image plugin for Palm pixmap images (output only). +## + +__version__ = "1.0" + +import Image, ImageFile +import StringIO + +_Palm8BitColormapValues = ( + ( 255, 255, 255 ), ( 255, 204, 255 ), ( 255, 153, 255 ), ( 255, 102, 255 ), + ( 255, 51, 255 ), ( 255, 0, 255 ), ( 255, 255, 204 ), ( 255, 204, 204 ), + ( 255, 153, 204 ), ( 255, 102, 204 ), ( 255, 51, 204 ), ( 255, 0, 204 ), + ( 255, 255, 153 ), ( 255, 204, 153 ), ( 255, 153, 153 ), ( 255, 102, 153 ), + ( 255, 51, 153 ), ( 255, 0, 153 ), ( 204, 255, 255 ), ( 204, 204, 255 ), + ( 204, 153, 255 ), ( 204, 102, 255 ), ( 204, 51, 255 ), ( 204, 0, 255 ), + ( 204, 255, 204 ), ( 204, 204, 204 ), ( 204, 153, 204 ), ( 204, 102, 204 ), + ( 204, 51, 204 ), ( 204, 0, 204 ), ( 204, 255, 153 ), ( 204, 204, 153 ), + ( 204, 153, 153 ), ( 204, 102, 153 ), ( 204, 51, 153 ), ( 204, 0, 153 ), + ( 153, 255, 255 ), ( 153, 204, 255 ), ( 153, 153, 255 ), ( 153, 102, 255 ), + ( 153, 51, 255 ), ( 153, 0, 255 ), ( 153, 255, 204 ), ( 153, 204, 204 ), + ( 153, 153, 204 ), ( 153, 102, 204 ), ( 153, 51, 204 ), ( 153, 0, 204 ), + ( 153, 255, 153 ), ( 153, 204, 153 ), ( 153, 153, 153 ), ( 153, 102, 153 ), + ( 153, 51, 153 ), ( 153, 0, 153 ), ( 102, 255, 255 ), ( 102, 204, 255 ), + ( 102, 153, 255 ), ( 102, 102, 255 ), ( 102, 51, 255 ), ( 102, 0, 255 ), + ( 102, 255, 204 ), ( 102, 204, 204 ), ( 102, 153, 204 ), ( 102, 102, 204 ), + ( 102, 51, 204 ), ( 102, 0, 204 ), ( 102, 255, 153 ), ( 102, 204, 153 ), + ( 102, 153, 153 ), ( 102, 102, 153 ), ( 102, 51, 153 ), ( 102, 0, 153 ), + ( 51, 255, 255 ), ( 51, 204, 255 ), ( 51, 153, 255 ), ( 51, 102, 255 ), + ( 51, 51, 255 ), ( 51, 0, 255 ), ( 51, 255, 204 ), ( 51, 204, 204 ), + ( 51, 153, 204 ), ( 51, 102, 204 ), ( 51, 51, 204 ), ( 51, 0, 204 ), + ( 51, 255, 153 ), ( 51, 204, 153 ), ( 51, 153, 153 ), ( 51, 102, 153 ), + ( 51, 51, 153 ), ( 51, 0, 153 ), ( 0, 255, 255 ), ( 0, 204, 255 ), + ( 0, 153, 255 ), ( 0, 102, 255 ), ( 0, 51, 255 ), ( 0, 0, 255 ), + ( 0, 255, 204 ), ( 0, 204, 204 ), ( 0, 153, 204 ), ( 0, 102, 204 ), + ( 0, 51, 204 ), ( 0, 0, 204 ), ( 0, 255, 153 ), ( 0, 204, 153 ), + ( 0, 153, 153 ), ( 0, 102, 153 ), ( 0, 51, 153 ), ( 0, 0, 153 ), + ( 255, 255, 102 ), ( 255, 204, 102 ), ( 255, 153, 102 ), ( 255, 102, 102 ), + ( 255, 51, 102 ), ( 255, 0, 102 ), ( 255, 255, 51 ), ( 255, 204, 51 ), + ( 255, 153, 51 ), ( 255, 102, 51 ), ( 255, 51, 51 ), ( 255, 0, 51 ), + ( 255, 255, 0 ), ( 255, 204, 0 ), ( 255, 153, 0 ), ( 255, 102, 0 ), + ( 255, 51, 0 ), ( 255, 0, 0 ), ( 204, 255, 102 ), ( 204, 204, 102 ), + ( 204, 153, 102 ), ( 204, 102, 102 ), ( 204, 51, 102 ), ( 204, 0, 102 ), + ( 204, 255, 51 ), ( 204, 204, 51 ), ( 204, 153, 51 ), ( 204, 102, 51 ), + ( 204, 51, 51 ), ( 204, 0, 51 ), ( 204, 255, 0 ), ( 204, 204, 0 ), + ( 204, 153, 0 ), ( 204, 102, 0 ), ( 204, 51, 0 ), ( 204, 0, 0 ), + ( 153, 255, 102 ), ( 153, 204, 102 ), ( 153, 153, 102 ), ( 153, 102, 102 ), + ( 153, 51, 102 ), ( 153, 0, 102 ), ( 153, 255, 51 ), ( 153, 204, 51 ), + ( 153, 153, 51 ), ( 153, 102, 51 ), ( 153, 51, 51 ), ( 153, 0, 51 ), + ( 153, 255, 0 ), ( 153, 204, 0 ), ( 153, 153, 0 ), ( 153, 102, 0 ), + ( 153, 51, 0 ), ( 153, 0, 0 ), ( 102, 255, 102 ), ( 102, 204, 102 ), + ( 102, 153, 102 ), ( 102, 102, 102 ), ( 102, 51, 102 ), ( 102, 0, 102 ), + ( 102, 255, 51 ), ( 102, 204, 51 ), ( 102, 153, 51 ), ( 102, 102, 51 ), + ( 102, 51, 51 ), ( 102, 0, 51 ), ( 102, 255, 0 ), ( 102, 204, 0 ), + ( 102, 153, 0 ), ( 102, 102, 0 ), ( 102, 51, 0 ), ( 102, 0, 0 ), + ( 51, 255, 102 ), ( 51, 204, 102 ), ( 51, 153, 102 ), ( 51, 102, 102 ), + ( 51, 51, 102 ), ( 51, 0, 102 ), ( 51, 255, 51 ), ( 51, 204, 51 ), + ( 51, 153, 51 ), ( 51, 102, 51 ), ( 51, 51, 51 ), ( 51, 0, 51 ), + ( 51, 255, 0 ), ( 51, 204, 0 ), ( 51, 153, 0 ), ( 51, 102, 0 ), + ( 51, 51, 0 ), ( 51, 0, 0 ), ( 0, 255, 102 ), ( 0, 204, 102 ), + ( 0, 153, 102 ), ( 0, 102, 102 ), ( 0, 51, 102 ), ( 0, 0, 102 ), + ( 0, 255, 51 ), ( 0, 204, 51 ), ( 0, 153, 51 ), ( 0, 102, 51 ), + ( 0, 51, 51 ), ( 0, 0, 51 ), ( 0, 255, 0 ), ( 0, 204, 0 ), + ( 0, 153, 0 ), ( 0, 102, 0 ), ( 0, 51, 0 ), ( 17, 17, 17 ), + ( 34, 34, 34 ), ( 68, 68, 68 ), ( 85, 85, 85 ), ( 119, 119, 119 ), + ( 136, 136, 136 ), ( 170, 170, 170 ), ( 187, 187, 187 ), ( 221, 221, 221 ), + ( 238, 238, 238 ), ( 192, 192, 192 ), ( 128, 0, 0 ), ( 128, 0, 128 ), + ( 0, 128, 0 ), ( 0, 128, 128 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), + ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 ), ( 0, 0, 0 )) + +# so build a prototype image to be used for palette resampling +def build_prototype_image(): + image = Image.new("L", (1,len(_Palm8BitColormapValues),)) + image.putdata(range(len(_Palm8BitColormapValues))) + palettedata = () + for i in range(len(_Palm8BitColormapValues)): + palettedata = palettedata + _Palm8BitColormapValues[i] + for i in range(256 - len(_Palm8BitColormapValues)): + palettedata = palettedata + (0, 0, 0) + image.putpalette(palettedata) + return image + +Palm8BitColormapImage = build_prototype_image() + +# OK, we now have in Palm8BitColormapImage, a "P"-mode image with the right palette +# +# -------------------------------------------------------------------- + +_FLAGS = { + "custom-colormap": 0x4000, + "is-compressed": 0x8000, + "has-transparent": 0x2000, + } + +_COMPRESSION_TYPES = { + "none": 0xFF, + "rle": 0x01, + "scanline": 0x00, + } + +def o16b(i): + return chr(i>>8&255) + chr(i&255) + +# +# -------------------------------------------------------------------- + +## +# (Internal) Image save plugin for the Palm format. + +def _save(im, fp, filename, check=0): + + if im.mode == "P": + + # we assume this is a color Palm image with the standard colormap, + # unless the "info" dict has a "custom-colormap" field + + rawmode = "P" + bpp = 8 + version = 1 + + elif im.mode == "L" and im.encoderinfo.has_key("bpp") and im.encoderinfo["bpp"] in (1, 2, 4): + + # this is 8-bit grayscale, so we shift it to get the high-order bits, and invert it because + # Palm does greyscale from white (0) to black (1) + bpp = im.encoderinfo["bpp"] + im = im.point(lambda x, shift=8-bpp, maxval=(1 << bpp)-1: maxval - (x >> shift)) + # we ignore the palette here + im.mode = "P" + rawmode = "P;" + str(bpp) + version = 1 + + elif im.mode == "L" and im.info.has_key("bpp") and im.info["bpp"] in (1, 2, 4): + + # here we assume that even though the inherent mode is 8-bit grayscale, only + # the lower bpp bits are significant. We invert them to match the Palm. + bpp = im.info["bpp"] + im = im.point(lambda x, maxval=(1 << bpp)-1: maxval - (x & maxval)) + # we ignore the palette here + im.mode = "P" + rawmode = "P;" + str(bpp) + version = 1 + + elif im.mode == "1": + + # monochrome -- write it inverted, as is the Palm standard + rawmode = "1;I" + bpp = 1 + version = 0 + + else: + + raise IOError, "cannot write mode %s as Palm" % im.mode + + if check: + return check + + # + # make sure image data is available + im.load() + + # write header + + cols = im.size[0] + rows = im.size[1] + + rowbytes = ((cols + (16/bpp - 1)) / (16 / bpp)) * 2; + transparent_index = 0 + compression_type = _COMPRESSION_TYPES["none"] + + flags = 0; + if im.mode == "P" and im.info.has_key("custom-colormap"): + flags = flags & _FLAGS["custom-colormap"] + colormapsize = 4 * 256 + 2; + colormapmode = im.palette.mode + colormap = im.getdata().getpalette() + else: + colormapsize = 0 + + if im.info.has_key("offset"): + offset = (rowbytes * rows + 16 + 3 + colormapsize) / 4; + else: + offset = 0 + + fp.write(o16b(cols) + o16b(rows) + o16b(rowbytes) + o16b(flags)) + fp.write(chr(bpp)) + fp.write(chr(version)) + fp.write(o16b(offset)) + fp.write(chr(transparent_index)) + fp.write(chr(compression_type)) + fp.write(o16b(0)) # reserved by Palm + + # now write colormap if necessary + + if colormapsize > 0: + fp.write(o16b(256)) + for i in range(256): + fp.write(chr(i)) + if colormapmode == 'RGB': + fp.write(chr(colormap[3 * i]) + chr(colormap[3 * i + 1]) + chr(colormap[3 * i + 2])) + elif colormapmode == 'RGBA': + fp.write(chr(colormap[4 * i]) + chr(colormap[4 * i + 1]) + chr(colormap[4 * i + 2])) + + # now convert data to raw form + ImageFile._save(im, fp, [("raw", (0,0)+im.size, 0, (rawmode, rowbytes, 1))]) + + fp.flush() + + +# +# -------------------------------------------------------------------- + +Image.register_save("Palm", _save) + +Image.register_extension("Palm", ".palm") + +Image.register_mime("Palm", "image/palm") |