/usr/share/pyshared/kaa/metadata/image/tiff.py is in python-kaa-metadata 0.7.7+svn4596-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | # -*- coding: iso-8859-1 -*-
# -----------------------------------------------------------------------------
# tiff.py - tiff file parsing
# -----------------------------------------------------------------------------
# $Id: tiff.py 3647 2008-10-25 19:52:16Z hmeine $
#
# -----------------------------------------------------------------------------
# kaa-Metadata - Media Metadata for Python
# Copyright (C) 2003-2006 Thomas Schueppel, Dirk Meyer
#
# First Edition: Thomas Schueppel <stain@acm.org>
# Maintainer: Dirk Meyer <dischi@freevo.org>
#
# Please see the file AUTHORS for a complete list of authors.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MER-
# CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# -----------------------------------------------------------------------------
__all__ = ['Parser']
# python imports
import struct
import logging
# import kaa.metadata.image core
import core
import IPTC
# get logging object
log = logging.getLogger('metadata')
MOTOROLASIGNATURE = 'MM\x00\x2a'
INTELSIGNATURE = 'II\x2a\x00'
# http://partners.adobe.com/asn/developer/pdfs/tn/TIFF6.pdf
class TIFF(core.Image):
table_mapping = { 'IPTC': IPTC.mapping }
def __init__(self,file):
core.Image.__init__(self)
self.iptc = None
self.mime = 'image/tiff'
self.type = 'TIFF image'
self.intel = 0
iptc = {}
header = file.read(8)
if header[:4] == MOTOROLASIGNATURE:
self.intel = 0
(offset,) = struct.unpack(">I", header[4:8])
file.seek(offset)
(len,) = struct.unpack(">H", file.read(2))
app = file.read(len*12)
for i in range(len):
(tag, type, length, value, offset) = \
struct.unpack('>HHIHH', app[i*12:i*12+12])
if tag == 0x8649:
file.seek(offset,0)
iptc = IPTC.parseiptc(file.read(1000))
elif tag == 0x0100:
if value != 0:
self.width = value
else:
self.width = offset
elif tag == 0x0101:
if value != 0:
self.height = value
else:
self.height = offset
elif header[:4] == INTELSIGNATURE:
self.intel = 1
(offset,) = struct.unpack("<I", header[4:8])
file.seek(offset,0)
(len,) = struct.unpack("<H", file.read(2))
app = file.read(len*12)
for i in range(len):
(tag, type, length, offset, value) = \
struct.unpack('<HHIHH', app[i*12:i*12+12])
if tag == 0x8649:
file.seek(offset)
iptc = IPTC.parseiptc(file.read(1000))
elif tag == 0x0100:
if value != 0:
self.width = value
else:
self.width = offset
elif tag == 0x0101:
if value != 0:
self.height = value
else:
self.height = offset
else:
raise core.ParseError()
if iptc:
self._appendtable('IPTC', iptc)
Parser = TIFF
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