├── .gitignore ├── psdparse ├── __init__.py └── psdparser.py ├── README.txt ├── setup.py ├── bin └── psdparser.py └── LICENSE.txt /.gitignore: -------------------------------------------------------------------------------- 1 | *.pyc 2 | build/ 3 | -------------------------------------------------------------------------------- /psdparse/__init__.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | 3 | # This file is part of psdparser. 4 | # 5 | # Psdparser is free software: you can redistribute it and/or modify 6 | # it under the terms of the GNU General Public License as published by 7 | # the Free Software Foundation, either version 3 of the License, or 8 | # (at your option) any later version. 9 | # 10 | # Psdparser is distributed in the hope that it will be useful, 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 | # GNU General Public License for more details. 14 | # 15 | # You should have received a copy of the GNU General Public License 16 | # along with Psdparser. If not, see . 17 | 18 | from psdparser import * 19 | -------------------------------------------------------------------------------- /README.txt: -------------------------------------------------------------------------------- 1 | Original name: psdparse 2 | Original author: Copyright (C) 2004-6 Toby Thain, toby@telegraphics.com.au 3 | 4 | Forked in pure Python with the name of "psdparser" 5 | Copyright (C) 2008-10 Jérémy Bethmont, jeremy.bethmont@gmail.com 6 | 7 | This utility parses and prints a description of various structures 8 | inside an Adobe Photoshop(TM) PSD format file. 9 | It can optionally extract raster layers and spot/alpha channels to PNG files. 10 | 11 | A reasonable amount of integrity checking is performed. Corrupt images may 12 | still cause the program to give up, but it is usually much more robust 13 | than Photoshop when dealing with damaged files: It is unlikely to crash, 14 | and it recovers a more complete image. 15 | 16 | Tested with PSDs created by PS 3.0, 5.5, 7.0, CS and CS2, 17 | in Bitmap, Indexed, Grey Scale, CMYK and RGB Colour modes 18 | and 8/16 bit depths, with up to 53 alpha channels. 19 | 20 | This software uses zlib which is (C) Jean-loup Gailly and Mark Adler. -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | from distutils.core import setup 3 | 4 | setup( 5 | name = 'psdparser', 6 | version = '0.1', 7 | author = 'Jeremy Bethmont', 8 | author_email = 'jeremy.bethmont@gmail.com', 9 | url = 'https://github.com/jerem/psdparse', 10 | 11 | description = 'PSD parser', 12 | long_description = open('README.txt').read(), 13 | 14 | license = 'GPLv2', 15 | packages = ['psdparse'], 16 | scripts=['bin/psdparser.py'], 17 | requires=['PyYAML', 'PIL'], 18 | 19 | classifiers=[ 20 | 'Development Status :: 3 - Alpha', 21 | 'Intended Audience :: Developers', 22 | 'License :: OSI Approved :: GNU General Public License v2 (GPLv2)', 23 | 'Programming Language :: Python', 24 | 'Programming Language :: Python :: 2', 25 | 'Programming Language :: Python :: 2.5', 26 | 'Programming Language :: Python :: 2.6', 27 | 'Programming Language :: Python :: 2.7', 28 | 'Topic :: Multimedia :: Graphics', 29 | 'Topic :: Multimedia :: Graphics :: Viewers', 30 | 'Topic :: Multimedia :: Graphics :: Graphics Conversion', 31 | 'Topic :: Software Development :: Libraries :: Python Modules', 32 | ], 33 | ) 34 | -------------------------------------------------------------------------------- /bin/psdparser.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | from __future__ import absolute_import 4 | import sys 5 | import logging 6 | from psdparse import psdparser 7 | 8 | if __name__ == '__main__': 9 | """ 10 | Let's get started! 11 | """ 12 | 13 | from optparse import OptionParser 14 | parser = OptionParser(usage = "usage: %prog [OPTS] PSDFILE.psd") 15 | po = parser.add_option 16 | 17 | # Verbosity 18 | po('-v', '--verbose', default=False, action='store_true') 19 | po('-q', '--quiet', default=False, action='store_true') 20 | 21 | (OPTS, args) = parser.parse_args() 22 | 23 | # The global holder for all the information we really care about 24 | info = {} 25 | 26 | # Set the logger 27 | level = logging.INFO 28 | if OPTS.verbose: 29 | level = logging.DEBUG 30 | if OPTS.quiet: 31 | level = logging.WARNING 32 | 33 | handler = logging.StreamHandler() 34 | handler.setFormatter(logging.Formatter('[DEBUG] %(message)s')) 35 | psdparser.logger.addHandler(handler) 36 | psdparser.logger.setLevel(level) 37 | 38 | # Run 39 | if len(args) == 1: 40 | psd = psdparser.PSDParser(args[0]) 41 | psd.parse() 42 | 43 | import yaml 44 | print "# YAML automatically generated by psdparser\n" 45 | print yaml.dump({'header': psd.header, 'ressources': psd.ressources, 'layers': psd.layers}, indent=2) 46 | 47 | else: 48 | parser.print_help() 49 | sys.exit(1) 50 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /psdparse/psdparser.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | 3 | # This file is part of psdparser. 4 | # 5 | # Psdparser is free software: you can redistribute it and/or modify 6 | # it under the terms of the GNU General Public License as published by 7 | # the Free Software Foundation, either version 3 of the License, or 8 | # (at your option) any later version. 9 | # 10 | # Psdparser is distributed in the hope that it will be useful, 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 | # GNU General Public License for more details. 14 | # 15 | # You should have received a copy of the GNU General Public License 16 | # along with Psdparser. If not, see . 17 | 18 | import logging 19 | import sys 20 | from struct import unpack, calcsize 21 | from PIL import Image 22 | 23 | logger = logging.getLogger(__name__) 24 | 25 | """ 26 | Header mode field meanings 27 | """ 28 | CHANNEL_SUFFIXES = { 29 | -2: 'layer mask', 30 | -1: 'A', 31 | 0: 'R', 32 | 1: 'G', 33 | 2: 'B', 34 | 3: 'RGB', 35 | 4: 'CMYK', 5: 'HSL', 6: 'HSB', 36 | 9: 'Lab', 11: 'RGB', 37 | 12: 'Lab', 13: 'CMYK', 38 | } 39 | 40 | """ 41 | Resource id descriptions 42 | """ 43 | RESOURCE_DESCRIPTIONS = { 44 | 1000: 'PS2.0 mode data', 45 | 1001: 'Macintosh print record', 46 | 1003: 'PS2.0 indexed color table', 47 | 1005: 'ResolutionInfo', 48 | 1006: 'Names of the alpha channels', 49 | 1007: 'DisplayInfo', 50 | 1008: 'Caption', 51 | 1009: 'Border information', 52 | 1010: 'Background color', 53 | 1011: 'Print flags', 54 | 1012: 'Grayscale/multichannel halftoning info', 55 | 1013: 'Color halftoning info', 56 | 1014: 'Duotone halftoning info', 57 | 1015: 'Grayscale/multichannel transfer function', 58 | 1016: 'Color transfer functions', 59 | 1017: 'Duotone transfer functions', 60 | 1018: 'Duotone image info', 61 | 1019: 'B&W values for the dot range', 62 | 1021: 'EPS options', 63 | 1022: 'Quick Mask info', 64 | 1024: 'Layer state info', 65 | 1025: 'Working path', 66 | 1026: 'Layers group info', 67 | 1028: 'IPTC-NAA record (File Info)', 68 | 1029: 'Image mode for raw format files', 69 | 1030: 'JPEG quality', 70 | 1032: 'Grid and guides info', 71 | 1033: 'Thumbnail resource', 72 | 1034: 'Copyright flag', 73 | 1035: 'URL', 74 | 1036: 'Thumbnail resource', 75 | 1037: 'Global Angle', 76 | 1038: 'Color samplers resource', 77 | 1039: 'ICC Profile', 78 | 1040: 'Watermark', 79 | 1041: 'ICC Untagged', 80 | 1042: 'Effects visible', 81 | 1043: 'Spot Halftone', 82 | 1044: 'Document specific IDs', 83 | 1045: 'Unicode Alpha Names', 84 | 1046: 'Indexed Color Table Count', 85 | 1047: 'Transparent Index', 86 | 1049: 'Global Altitude', 87 | 1050: 'Slices', 88 | 1051: 'Workflow URL', 89 | 1052: 'Jump To XPEP', 90 | 1053: 'Alpha Identifiers', 91 | 1054: 'URL List', 92 | 1057: 'Version Info', 93 | 2999: 'Name of clipping path', 94 | 10000: 'Print flags info', 95 | } 96 | 97 | MODES = { 98 | 0: 'Bitmap', 99 | 1: 'GrayScale', 100 | 2: 'IndexedColor', 101 | 3: 'RGBColor', 102 | 4: 'CMYKColor', 103 | 5: 'HSLColor', 104 | 6: 'HSBColor', 105 | 7: 'Multichannel', 106 | 8: 'Duotone', 107 | 9: 'LabColor', 108 | 10: 'Gray16', 109 | 11: 'RGB48', 110 | 12: 'Lab48', 111 | 13: 'CMYK64', 112 | 14: 'DeepMultichannel', 113 | 15: 'Duotone16', 114 | } 115 | 116 | COMPRESSIONS = { 117 | 0: 'Raw', 118 | 1: 'RLE', 119 | 2: 'ZIP', 120 | 3: 'ZIPPrediction', 121 | } 122 | 123 | BLENDINGS = { 124 | 'norm': 'normal', 125 | 'dark': 'darken', 126 | 'mul ': 'multiply', 127 | 'lite': 'lighten', 128 | 'scrn': 'screen', 129 | 'over': 'overlay', 130 | 'sLit': 'soft-light', 131 | 'hLit': 'hard-light', 132 | 'lLit': 'linear-light', 133 | 'diff': 'difference', 134 | 'smud': 'exclusion', 135 | } 136 | 137 | PIL_BANDS = { 138 | 'R': 0, 139 | 'G': 1, 140 | 'B': 2, 141 | 'A': 3, 142 | 'L': 0, 143 | } 144 | 145 | def INDENT_OUTPUT(depth, msg): 146 | return ''.join([' ' for i in range(0, depth)]) + msg 147 | 148 | class PSDParser(object): 149 | 150 | header = None 151 | ressources = None 152 | num_layers = 0 153 | layers = None 154 | images = None 155 | merged_image = None 156 | 157 | def __init__(self, filename): 158 | self.filename = filename 159 | 160 | def _pad2(self, i): 161 | """same or next even""" 162 | return (i + 1) / 2 * 2 163 | 164 | def _pad4(self, i): 165 | """same or next multiple of 4""" 166 | return (i + 3) / 4 * 4 167 | 168 | def _readf(self, format): 169 | """read a strct from file structure according to format""" 170 | return unpack(format, self.fd.read(calcsize(format))) 171 | 172 | def _skip_block(self, desc, indent=0, new_line=False): 173 | (n,) = self._readf('>L') # (n,) is a 1-tuple. 174 | if n: 175 | self.fd.seek(n, 1) # 1: relative 176 | 177 | if new_line: 178 | logger.debug('') 179 | logger.debug(INDENT_OUTPUT(indent, 'Skipped %s with %s bytes' % (desc, n))) 180 | 181 | def parse(self): 182 | logger.debug("Opening '%s'" % self.filename) 183 | 184 | self.fd = open(self.filename, 'rb') 185 | try: 186 | self.parse_header() 187 | self.parse_image_resources() 188 | self.parse_layers_and_masks() 189 | self.parse_image_data() 190 | finally: 191 | self.fd.close() 192 | 193 | logger.debug("") 194 | logger.debug("DONE") 195 | 196 | def parse_header(self): 197 | logger.debug("") 198 | logger.debug("# Header #") 199 | 200 | self.header = {} 201 | 202 | C_PSD_HEADER = ">4sH 6B HLLHH" 203 | ( 204 | self.header['sig'], 205 | self.header['version'], 206 | self.header['r0'], 207 | self.header['r1'], 208 | self.header['r2'], 209 | self.header['r3'], 210 | self.header['r4'], 211 | self.header['r5'], 212 | self.header['channels'], 213 | self.header['rows'], 214 | self.header['cols'], 215 | self.header['depth'], 216 | self.header['mode'] 217 | ) = self._readf(C_PSD_HEADER) 218 | 219 | self.size = [self.header['rows'], self.header['cols']] 220 | 221 | if self.header['sig'] != "8BPS": 222 | raise ValueError("Not a PSD signature: '%s'" % self.header['sig']) 223 | if self.header['version'] != 1: 224 | raise ValueError("Can not handle PSD version:%d" % self.header['version']) 225 | self.header['modename'] = MODES[self.header['mode']] if 0 <= self.header['mode'] < 16 else "(%s)" % self.header['mode'] 226 | 227 | logger.debug(INDENT_OUTPUT(1, "channels:%(channels)d, rows:%(rows)d, cols:%(cols)d, depth:%(depth)d, mode:%(mode)d [%(modename)s]" % self.header)) 228 | logger.debug(INDENT_OUTPUT(1, "%s" % self.header)) 229 | 230 | # Remember position 231 | self.header['colormodepos'] = self.fd.tell() 232 | self._skip_block("color mode data", 1) 233 | 234 | def parse_image_resources(self): 235 | def parse_irb(): 236 | """return total bytes in block""" 237 | r = {} 238 | r['at'] = self.fd.tell() 239 | (r['type'], r['id'], r['namelen']) = self._readf(">4s H B") 240 | n = self._pad2(r['namelen'] + 1) - 1 241 | (r['name'],) = self._readf(">%ds" % n) 242 | r['name'] = r['name'][:-1] # skim off trailing 0byte 243 | r['short'] = r['name'][:20] 244 | (r['size'],) = self._readf(">L") 245 | self.fd.seek(self._pad2(r['size']), 1) # 1: relative 246 | r['rdesc'] = "[%s]" % RESOURCE_DESCRIPTIONS.get(r['id'], "?") 247 | logger.debug(INDENT_OUTPUT(1, "Resource: %s" % r)) 248 | logger.debug(INDENT_OUTPUT(1, "0x%(at)06x| type:%(type)s, id:%(id)5d, size:0x%(size)04x %(rdesc)s '%(short)s'" % r)) 249 | self.ressources.append(r) 250 | return 4 + 2 + self._pad2(1 + r['namelen']) + 4 + self._pad2(r['size']) 251 | 252 | logger.debug("") 253 | logger.debug("# Ressources #") 254 | self.ressources = [] 255 | (n,) = self._readf(">L") # (n,) is a 1-tuple. 256 | while n > 0: 257 | n -= parse_irb() 258 | if n != 0: 259 | logger.debug("Image resources overran expected size by %d bytes" % (-n)) 260 | 261 | def parse_image(self, li, is_layer=True): 262 | def parse_channel(li, idx, count, rows, cols, depth): 263 | """params: 264 | li -- layer info struct 265 | idx -- channel number 266 | count -- number of channels to process ??? 267 | rows, cols -- dimensions 268 | depth -- bits 269 | """ 270 | chlen = li['chlengths'][idx] 271 | if chlen is not None and chlen < 2: 272 | raise ValueError("Not enough channel data: %s" % chlen) 273 | if li['chids'][idx] == -2: 274 | rows, cols = li['mask']['rows'], li['mask']['cols'] 275 | 276 | rb = (cols * depth + 7) / 8 # round to next byte 277 | 278 | # channel header 279 | chpos = self.fd.tell() 280 | (comp,) = self._readf(">H") 281 | 282 | if chlen: 283 | chlen -= 2 284 | 285 | pos = self.fd.tell() 286 | 287 | # If empty layer 288 | if cols * rows == 0: 289 | logger.debug(INDENT_OUTPUT(1, "Empty channel, skiping")) 290 | return 291 | 292 | if COMPRESSIONS.get(comp) == 'RLE': 293 | logger.debug(INDENT_OUTPUT(1, "Handling RLE compressed data")) 294 | rlecounts = 2 * count * rows 295 | if chlen and chlen < rlecounts: 296 | raise ValueError("Channel too short for RLE row counts (need %d bytes, have %d bytes)" % (rlecounts,chlen)) 297 | pos += rlecounts # image data starts after RLE counts 298 | rlecounts_data = self._readf(">%dH" % (count * rows)) 299 | for ch in range(count): 300 | rlelen_for_channel = sum(rlecounts_data[ch * rows:(ch + 1) * rows]) 301 | data = self.fd.read(rlelen_for_channel) 302 | channel_name = CHANNEL_SUFFIXES[li['chids'][idx]] 303 | if li['channels'] == 2 and channel_name == 'B': channel_name = 'L' 304 | p = Image.fromstring("L", (cols, rows), data, "packbits", "L" ) 305 | if is_layer: 306 | if channel_name in PIL_BANDS: 307 | self.images[li['idx']][PIL_BANDS[channel_name]] = p 308 | else: 309 | self.merged_image.append(p) 310 | 311 | elif COMPRESSIONS.get(comp) == 'Raw': 312 | logger.debug(INDENT_OUTPUT(1, "Handling Raw compressed data")) 313 | 314 | for ch in range(count): 315 | data = self.fd.read(cols * rows) 316 | channel_name = CHANNEL_SUFFIXES[li['chids'][idx]] 317 | if li['channels'] == 2 and channel_name == 'B': channel_name = 'L' 318 | p = Image.fromstring("L", (cols, rows), data, "raw", "L") 319 | if is_layer: 320 | if channel_name in PIL_BANDS: 321 | self.images[li['idx']][PIL_BANDS[channel_name]] = p 322 | else: 323 | self.merged_image.append(p) 324 | 325 | else: 326 | # TODO: maybe just skip channel...: 327 | # f.seek(chlen, SEEK_CUR) 328 | # return 329 | raise ValueError("Unsupported compression type: %s" % COMPRESSIONS.get(comp, comp)) 330 | 331 | if (chlen is not None) and (self.fd.tell() != chpos + 2 + chlen): 332 | logger.debug("currentpos:%d should be:%d!" % (f.tell(), chpos + 2 + chlen)) 333 | self.fd.seek(chpos + 2 + chlen, 0) # 0: SEEK_SET 334 | 335 | return 336 | 337 | if not self.header: 338 | self.parse_header() 339 | if not self.ressources: 340 | self._skip_block("image resources", new_line=True) 341 | self.ressources = 'not parsed' 342 | 343 | logger.debug("") 344 | logger.debug("# Image: %s/%d #" % (li['name'], li['channels'])) 345 | 346 | # channels 347 | if is_layer: 348 | for ch in range(li['channels']): 349 | parse_channel(li, ch, 1, li['rows'], li['cols'], self.header['depth']) 350 | else: 351 | parse_channel(li, 0, li['channels'], li['rows'], li['cols'], self.header['depth']) 352 | return 353 | 354 | def _read_descriptor(self): 355 | # Descriptor 356 | def _unicode_string(): 357 | len = self._readf(">L")[0] 358 | result = u'' 359 | for count in range(len): 360 | val = self._readf(">H")[0] 361 | if val: 362 | result += unichr(val) 363 | return result 364 | 365 | def _string_or_key(): 366 | len = self._readf(">L")[0] 367 | if not len: 368 | len = 4 369 | return self._readf(">%ds" % len)[0] 370 | 371 | def _desc_TEXT(): 372 | return _unicode_string() 373 | 374 | def _desc_enum(): 375 | return { 'typeID' : _string_or_key(), 376 | 'enum' : _string_or_key(), 377 | } 378 | 379 | def _desc_long(): 380 | return self._readf(">l")[0] 381 | 382 | def _desc_bool(): 383 | return self._readf(">?")[0] 384 | 385 | def _desc_doub(): 386 | return self._readf(">d")[0] 387 | 388 | def _desc_tdta(): 389 | # Apparently it is pdf data? 390 | # http://telegraphics.com.au/svn/psdparse 391 | # descriptor.c pdf.c 392 | 393 | len = self._readf(">L")[0] 394 | pdf_data = self.fd.read(len) 395 | return pdf_data 396 | 397 | _desc_item_factory = { 398 | 'TEXT' : _desc_TEXT, 399 | 'enum' : _desc_enum, 400 | 'long' : _desc_long, 401 | 'bool' : _desc_bool, 402 | 'doub' : _desc_doub, 403 | 'tdta' : _desc_tdta, 404 | } 405 | 406 | class_id_name = _unicode_string() 407 | class_id = _string_or_key() 408 | logger.debug(INDENT_OUTPUT(4, u"name='%s' clsid='%s'" % (class_id_name, class_id))) 409 | 410 | item_count = self._readf(">L")[0] 411 | #logger.debug(INDENT_OUTPUT(4, "item_count=%d" % (item_count))) 412 | items = {} 413 | for item_index in range(item_count): 414 | item_key = _string_or_key() 415 | item_type = self._readf(">4s")[0] 416 | if not item_type in _desc_item_factory: 417 | logger.debug(INDENT_OUTPUT(4, "unknown descriptor item '%s', skipping ahead." % item_type)) 418 | break 419 | 420 | items[item_key] = _desc_item_factory[item_type]() 421 | #logger.debug(INDENT_OUTPUT(4, "item['%s']='%r'" % (item_key,items[item_key]))) 422 | #print items[item_key] 423 | return items 424 | 425 | def parse_layers_and_masks(self): 426 | 427 | if not self.header: 428 | self.parse_header() 429 | if not self.ressources: 430 | self._skip_block('image resources', new_line=True) 431 | self.ressources = 'not parsed' 432 | 433 | logger.debug("") 434 | logger.debug("# Layers & Masks #") 435 | 436 | self.layers = [] 437 | self.images = [] 438 | self.header['mergedalpha'] = False 439 | (misclen,) = self._readf(">L") 440 | if misclen: 441 | miscstart = self.fd.tell() 442 | # process layer info section 443 | (layerlen,) = self._readf(">L") 444 | if layerlen: 445 | # layers structure 446 | (self.num_layers,) = self._readf(">h") 447 | if self.num_layers < 0: 448 | self.num_layers = -self.num_layers 449 | logger.debug(INDENT_OUTPUT(1, "First alpha is transparency for merged image")) 450 | self.header['mergedalpha'] = True 451 | logger.debug(INDENT_OUTPUT(1, "Layer info for %d layers:" % self.num_layers)) 452 | 453 | if self.num_layers * (18 + 6 * self.header['channels']) > layerlen: 454 | raise ValueError("Unlikely number of %s layers for %s channels with %s layerlen. Giving up." % (self.num_layers, self.header['channels'], layerlen)) 455 | 456 | linfo = [] # collect header infos here 457 | 458 | for i in range(self.num_layers): 459 | l = {} 460 | l['idx'] = i 461 | 462 | # 463 | # Layer Info 464 | # 465 | (l['top'], l['left'], l['bottom'], l['right'], l['channels']) = self._readf(">llllH") 466 | (l['rows'], l['cols']) = (l['bottom'] - l['top'], l['right'] - l['left']) 467 | logger.debug(INDENT_OUTPUT(1, "layer %(idx)d: (%(left)4d,%(top)4d,%(right)4d,%(bottom)4d), %(channels)d channels (%(cols)4d cols x %(rows)4d rows)" % l)) 468 | 469 | # Sanity check 470 | if l['bottom'] < l['top'] or l['right'] < l['left'] or l['channels'] > 64: 471 | logger.debug(INDENT_OUTPUT(2, "Something's not right about that, trying to skip layer.")) 472 | self.fd.seek(6 * l['channels'] + 12, 1) # 1: SEEK_CUR 473 | self._skip_block("layer info: extra data", 2) 474 | continue # next layer 475 | 476 | # Read channel infos 477 | l['chlengths'] = [] 478 | l['chids'] = [] 479 | # - 'hackish': addressing with -1 and -2 will wrap around to the two extra channels 480 | l['chindex'] = [ -1 ] * (l['channels'] + 2) 481 | for j in range(l['channels']): 482 | chid, chlen = self._readf(">hL") 483 | l['chids'].append(chid) 484 | l['chlengths'].append(chlen) 485 | logger.debug(INDENT_OUTPUT(3, "Channel %2d: id=%2d, %5d bytes" % (j, chid, chlen))) 486 | if -2 <= chid < l['channels']: 487 | # pythons negative list-indexs: [ 0, 1, 2, 3, ... -2, -1] 488 | l['chindex'][chid] = j 489 | else: 490 | logger.debug(INDENT_OUTPUT(3, "Unexpected channel id %d" % chid)) 491 | l['chidstr'] = CHANNEL_SUFFIXES.get(chid, "?") 492 | 493 | # put channel info into connection 494 | linfo.append(l) 495 | 496 | # 497 | # Blend mode 498 | # 499 | bm = {} 500 | 501 | (bm['sig'], bm['key'], bm['opacity'], bm['clipping'], bm['flags'], bm['filler'], 502 | ) = self._readf(">4s4sBBBB") 503 | bm['opacp'] = (bm['opacity'] * 100 + 127) / 255 504 | bm['clipname'] = bm['clipping'] and "non-base" or "base" 505 | bm['blending'] = BLENDINGS.get(bm['key']) 506 | l['blend_mode'] = bm 507 | 508 | logger.debug(INDENT_OUTPUT(3, "Blending mode: sig=%(sig)s key=%(key)s opacity=%(opacity)d(%(opacp)d%%) clipping=%(clipping)d(%(clipname)s) flags=%(flags)x" % bm)) 509 | 510 | # remember position for skipping unrecognized data 511 | (extralen,) = self._readf(">L") 512 | extrastart = self.fd.tell() 513 | 514 | # 515 | # Layer mask data 516 | # 517 | m = {} 518 | (m['size'],) = self._readf(">L") 519 | if m['size']: 520 | (m['top'], m['left'], m['bottom'], m['right'], m['default_color'], m['flags'], 521 | ) = self._readf(">llllBB") 522 | # skip remainder 523 | self.fd.seek(m['size'] - 18, 1) # 1: SEEK_CUR 524 | m['rows'], m['cols'] = m['bottom'] - m['top'], m['right'] - m['left'] 525 | l['mask'] = m 526 | 527 | self._skip_block("layer blending ranges", 3) 528 | 529 | # 530 | # Layer name 531 | # 532 | name_start = self.fd.tell() 533 | (l['namelen'],) = self._readf(">B") 534 | addl_layer_data_start = name_start + self._pad4(l['namelen'] + 1) 535 | # - "-1": one byte traling 0byte. "-1": one byte garble. 536 | # (l['name'],) = readf(f, ">%ds" % (self._pad4(1+l['namelen'])-2)) 537 | (l['name'],) = self._readf(">%ds" % (l['namelen'])) 538 | 539 | logger.debug(INDENT_OUTPUT(3, "Name: '%s'" % l['name'])) 540 | 541 | self.fd.seek(addl_layer_data_start, 0) 542 | 543 | 544 | # 545 | # Read add'l Layer Information 546 | # 547 | while self.fd.tell() < extrastart + extralen: 548 | (signature, key, size, ) = self._readf(">4s4sL") # (n,) is a 1-tuple. 549 | logger.debug(INDENT_OUTPUT(3, "Addl info: sig='%s' key='%s' size='%d'" % 550 | (signature, key, size))) 551 | next_addl_offset = self.fd.tell() + self._pad2(size) 552 | 553 | if key == 'luni': 554 | namelen = self._readf(">L")[0] 555 | l['name'] = u'' 556 | for count in range(0, namelen): 557 | l['name'] += unichr(self._readf(">H")[0]) 558 | 559 | logger.debug(INDENT_OUTPUT(4, u"Unicode Name: '%s'" % l['name'])) 560 | elif key == 'TySh': 561 | version = self._readf(">H")[0] 562 | (xx, xy, yx, yy, tx, ty,) = self._readf(">dddddd") #transform 563 | text_version = self._readf(">H")[0] 564 | text_desc_version = self._readf(">L")[0] 565 | text_desc = self._read_descriptor() 566 | warp_version = self._readf(">H")[0] 567 | warp_desc_version = self._readf(">L")[0] 568 | warp_desc = self._read_descriptor() 569 | (left,top,right,bottom,) = self._readf(">llll") 570 | 571 | logger.debug(INDENT_OUTPUT(4, "ver=%d tver=%d dver=%d" 572 | % (version, text_version, text_desc_version))) 573 | logger.debug(INDENT_OUTPUT(4, "%f %f %f %f %f %f" % (xx, xy, yx, yy, tx, ty,))) 574 | logger.debug(INDENT_OUTPUT(4, "l=%f t=%f r=%f b=%f" 575 | % (left, top, right, bottom))) 576 | 577 | l['text_layer'] = {} 578 | l['text_layer']['text_desc'] = text_desc 579 | l['text_layer']['text_transform'] = (xx, xy, yx, yy, tx, ty,) 580 | l['text_layer']['left'] = left 581 | l['text_layer']['top'] = top 582 | l['text_layer']['right'] = right 583 | l['text_layer']['bottom'] = bottom 584 | 585 | self.fd.seek(next_addl_offset, 0) 586 | 587 | # Skip over any extra data 588 | self.fd.seek(extrastart + extralen, 0) # 0: SEEK_SET 589 | 590 | self.layers.append(l) 591 | 592 | for i in range(self.num_layers): 593 | # Empty layer 594 | if linfo[i]['rows'] * linfo[i]['cols'] == 0: 595 | self.images.append(None) 596 | self.parse_image(linfo[i], is_layer=True) 597 | continue 598 | 599 | self.images.append([0, 0, 0, 0]) 600 | self.parse_image(linfo[i], is_layer=True) 601 | if linfo[i]['channels'] == 2: 602 | l = self.images[i][0] 603 | a = self.images[i][3] 604 | self.images[i] = Image.merge('LA', [l, a]) 605 | else: 606 | # is there an alpha channel? 607 | if type(self.images[i][3]) is int: 608 | self.images[i] = Image.merge('RGB', self.images[i][0:3]) 609 | else: 610 | self.images[i] = Image.merge('RGBA', self.images[i]) 611 | 612 | else: 613 | logger.debug(INDENT_OUTPUT(1, "Layer info section is empty")) 614 | 615 | skip = miscstart + misclen - self.fd.tell() 616 | if skip: 617 | logger.debug("") 618 | logger.debug("Skipped %d bytes at end of misc data?" % skip) 619 | self.fd.seek(skip, 1) # 1: SEEK_CUR 620 | else: 621 | logger.debug(INDENT_OUTPUT(1, "Misc info section is empty")) 622 | 623 | def parse_image_data(self): 624 | 625 | if not self.header: 626 | self.parse_header() 627 | if not self.ressources: 628 | self._skip_block("image resources", new_line=True) 629 | self.ressources = 'not parsed' 630 | if not self.layers: 631 | self._skip_block("image layers", new_line=True) 632 | self.layers = 'not parsed' 633 | 634 | self.merged_image = [] 635 | li = {} 636 | li['chids'] = range(self.header['channels']) 637 | li['chlengths'] = [ None ] * self.header['channels'] # dummy data 638 | (li['name'], li['channels'], li['rows'], li['cols']) = ('merged', self.header['channels'], self.header['rows'], self.header['cols']) 639 | li['layernum'] = -1 640 | self.parse_image(li, is_layer=False) 641 | if li['channels'] == 1: 642 | self.merged_image = self.merged_image[0] 643 | elif li['channels'] == 3: 644 | self.merged_image = Image.merge('RGB', self.merged_image) 645 | elif li['channels'] >= 4 and self.header['mode'] == 3: 646 | self.merged_image = Image.merge('RGBA', self.merged_image[:4]) 647 | else: 648 | raise ValueError('Unsupported mode or number of channels') 649 | 650 | --------------------------------------------------------------------------------