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Diffstat (limited to 'PIL/FpxImagePlugin.py')
| -rw-r--r-- | PIL/FpxImagePlugin.py | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/PIL/FpxImagePlugin.py b/PIL/FpxImagePlugin.py deleted file mode 100644 index d4a1aef..0000000 --- a/PIL/FpxImagePlugin.py +++ /dev/null @@ -1,226 +0,0 @@ -# -# THIS IS WORK IN PROGRESS -# -# The Python Imaging Library. -# $Id: FpxImagePlugin.py 2134 2004-10-06 08:55:20Z fredrik $ -# -# FlashPix support for PIL -# -# History: -# 97-01-25 fl Created (reads uncompressed RGB images only) -# -# Copyright (c) Secret Labs AB 1997. -# Copyright (c) Fredrik Lundh 1997. -# -# See the README file for information on usage and redistribution. -# - - -__version__ = "0.1" - - -import string - -import Image, ImageFile -from OleFileIO import * - - -# we map from colour field tuples to (mode, rawmode) descriptors -MODES = { - # opacity - (0x00007ffe): ("A", "L"), - # monochrome - (0x00010000,): ("L", "L"), - (0x00018000, 0x00017ffe): ("RGBA", "LA"), - # photo YCC - (0x00020000, 0x00020001, 0x00020002): ("RGB", "YCC;P"), - (0x00028000, 0x00028001, 0x00028002, 0x00027ffe): ("RGBA", "YCCA;P"), - # standard RGB (NIFRGB) - (0x00030000, 0x00030001, 0x00030002): ("RGB","RGB"), - (0x00038000, 0x00038001, 0x00038002, 0x00037ffe): ("RGBA","RGBA"), -} - -# -# -------------------------------------------------------------------- - -def _accept(prefix): - return prefix[:8] == MAGIC - -## -# Image plugin for the FlashPix images. - -class FpxImageFile(ImageFile.ImageFile): - - format = "FPX" - format_description = "FlashPix" - - def _open(self): - # - # read the OLE directory and see if this is a likely - # to be a FlashPix file - - try: - self.ole = OleFileIO(self.fp) - except IOError: - raise SyntaxError, "not an FPX file; invalid OLE file" - - if self.ole.root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B": - raise SyntaxError, "not an FPX file; bad root CLSID" - - self._open_index(1) - - def _open_index(self, index = 1): - # - # get the Image Contents Property Set - - prop = self.ole.getproperties([ - "Data Object Store %06d" % index, - "\005Image Contents" - ]) - - # size (highest resolution) - - self.size = prop[0x1000002], prop[0x1000003] - - size = max(self.size) - i = 1 - while size > 64: - size = size / 2 - i = i + 1 - self.maxid = i - 1 - - # mode. instead of using a single field for this, flashpix - # requires you to specify the mode for each channel in each - # resolution subimage, and leaves it to the decoder to make - # sure that they all match. for now, we'll cheat and assume - # that this is always the case. - - id = self.maxid << 16 - - s = prop[0x2000002|id] - - colors = [] - for i in range(i32(s, 4)): - # note: for now, we ignore the "uncalibrated" flag - colors.append(i32(s, 8+i*4) & 0x7fffffff) - - self.mode, self.rawmode = MODES[tuple(colors)] - - # load JPEG tables, if any - self.jpeg = {} - for i in range(256): - id = 0x3000001|(i << 16) - if prop.has_key(id): - self.jpeg[i] = prop[id] - - # print len(self.jpeg), "tables loaded" - - self._open_subimage(1, self.maxid) - - def _open_subimage(self, index = 1, subimage = 0): - # - # setup tile descriptors for a given subimage - - stream = [ - "Data Object Store %06d" % index, - "Resolution %04d" % subimage, - "Subimage 0000 Header" - ] - - fp = self.ole.openstream(stream) - - # skip prefix - p = fp.read(28) - - # header stream - s = fp.read(36) - - size = i32(s, 4), i32(s, 8) - tilecount = i32(s, 12) - tilesize = i32(s, 16), i32(s, 20) - channels = i32(s, 24) - offset = i32(s, 28) - length = i32(s, 32) - - # print size, self.mode, self.rawmode - - if size != self.size: - raise IOError, "subimage mismatch" - - # get tile descriptors - fp.seek(28 + offset) - s = fp.read(i32(s, 12) * length) - - x = y = 0 - xsize, ysize = size - xtile, ytile = tilesize - self.tile = [] - - for i in range(0, len(s), length): - - compression = i32(s, i+8) - - if compression == 0: - self.tile.append(("raw", (x,y,x+xtile,y+ytile), - i32(s, i) + 28, (self.rawmode))) - - elif compression == 1: - - # FIXME: the fill decoder is not implemented - self.tile.append(("fill", (x,y,x+xtile,y+ytile), - i32(s, i) + 28, (self.rawmode, s[12:16]))) - - elif compression == 2: - - internal_color_conversion = ord(s[14]) - jpeg_tables = ord(s[15]) - rawmode = self.rawmode - - if internal_color_conversion: - # The image is stored as usual (usually YCbCr). - if rawmode == "RGBA": - # For "RGBA", data is stored as YCbCrA based on - # negative RGB. The following trick works around - # this problem : - jpegmode, rawmode = "YCbCrK", "CMYK" - else: - jpegmode = None # let the decoder decide - - else: - # The image is stored as defined by rawmode - jpegmode = rawmode - - self.tile.append(("jpeg", (x,y,x+xtile,y+ytile), - i32(s, i) + 28, (rawmode, jpegmode))) - - # FIXME: jpeg tables are tile dependent; the prefix - # data must be placed in the tile descriptor itself! - - if jpeg_tables: - self.tile_prefix = self.jpeg[jpeg_tables] - - else: - raise IOError, "unknown/invalid compression" - - x = x + xtile - if x >= xsize: - x, y = 0, y + ytile - if y >= ysize: - break # isn't really required - - self.stream = stream - self.fp = None - - def load(self): - - if not self.fp: - self.fp = self.ole.openstream(self.stream[:2] + ["Subimage 0000 Data"]) - - ImageFile.ImageFile.load(self) - -# -# -------------------------------------------------------------------- - -Image.register_open("FPX", FpxImageFile, _accept) - -Image.register_extension("FPX", ".fpx") |