From f3be755857fc95d763f201742016d596eb7d19d7 Mon Sep 17 00:00:00 2001 From: glondu Date: Sun, 9 Dec 2007 16:32:26 +0100 Subject: [PATCH] Macro Gallery du wiki darcs-hash:20071209153226-d0547-cb4042d5bacaef59768fd65d3911d814d4b005bc.gz --- wiki/macro/Gallery.py | 89 ++- wiki/parser/EXIF.py | 1289 +++++++++++++++++++++++++++++++++++++---- 2 files changed, 1257 insertions(+), 121 deletions(-) diff --git a/wiki/macro/Gallery.py b/wiki/macro/Gallery.py index d1e1ea50..a686afec 100644 --- a/wiki/macro/Gallery.py +++ b/wiki/macro/Gallery.py @@ -2,7 +2,7 @@ """ Gallery.py Version 0.87 This macro creates dynamic tabulated displays based on attachment contents - + @copyright: 2004,2005 by Simon Ryan smartblackbox.com> http://smartblackbox.com/simon @license: GPL @@ -50,7 +50,7 @@ """ __author__ = "Simon D. Ryan" -__version__ = "0.86" +__version__ = "0.87" from MoinMoin import config, wikiutil import string, cStringIO, os @@ -118,7 +118,8 @@ def navibar(target,querystring): # Returns a navigational bar with PREV,THUMBS,NEXT positions=Globs.originals.keys() positions.sort() - thumbs='THUMBS' + # Append the action to the end of the URLS. This allows us to keep modes such as action=print + thumbs='THUMBS' index=positions.index(target) back,forward='','' if not index==0: @@ -133,9 +134,10 @@ def toolbar(target,naillevel): if Globs.admin: rotateleft='' rotateright='' + deleteitem='' htarget='' compat='' - return '
'+rotateleft+''+rotateright+'
\n'+htarget+compat+'
' + return '
'+rotateleft+''+rotateright+''+deleteitem+'
\n'+htarget+compat+'
' else: return '' @@ -250,6 +252,44 @@ def buildnails(items): open(Globs.attachmentdir+'/delete.me.to.regenerate.thumbnails.and.webnails','w').close() +def deletefromdisk(target): + # Rotate the images + # Don't go further if there is a lock in place + if os.path.isfile(Globs.attachmentdir+'/tmp.lock'): + message("I'm currently busy generating thumbnails and webnails. Please try your delete request again later.",0) + return '' + # Ok do the actual delete + if 1: + # Delete first the temp dir webnail and thumbnail + try: + os.unlink(Globs.gallerytempdir+'/tmp.webnail.'+target+'.jpg') + except: + pass + try: + os.unlink(Globs.gallerytempdir+'/tmp.thumbnail.'+target+'.jpg') + except: + pass + try: + os.unlink(Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg') + except: + pass + + # Now delete the original (except we actually just move it to /tmp) + # TODO: insert a random number in the destination filename to cope with deleting files with same name + origfn=Globs.originals[target] + try: + #shutil.copy(Globs.attachmentdir+'/'+origfn,'/tmp/deleted.'+origfn) + shutil.copy(Globs.attachmentdir+'/'+origfn,'/tmp/'+origfn) + os.unlink(Globs.attachmentdir+'/'+origfn) + except: + pass + try: + #shutil.copy(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt','/tmp/deleted.tmp.annotation.'+target+'.txt') + shutil.copy(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt','/tmp/tmp.annotation.'+target+'.txt') + os.unlink(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt') + except: + pass + def rotate(target,direction): # Rotate the images # Don't go further if there is a lock in place @@ -278,11 +318,12 @@ def rotate(target,direction): if not Globs.convertbin == 'Image': convout=commands.getoutput(Globs.convertbin+' -rotate '+degs+' "'+Globs.gallerytempdir+'/tmp.webnail.'+target+'.jpg"') convout=commands.getoutput(Globs.convertbin+' -rotate '+degs+' "'+Globs.gallerytempdir+'/tmp.thumbnail.'+target+'.jpg"') - if not os.path.isfile(Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg'): - # Generate from original - pathtooriginal=Globs.attachmentdir+'/'+Globs.originals[target] - shutil.copy(pathtooriginal,Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg') - convout=commands.getoutput(Globs.convertbin+' -rotate '+degs+' "'+Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg"') + # Don't bother rotating the original. Since we don't want to reduce its quality incase it is used for printing + #if not os.path.isfile(Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg'): + # # Generate from original + # pathtooriginal=Globs.attachmentdir+'/'+Globs.originals[target] + # shutil.copy(pathtooriginal,Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg') + #convout=commands.getoutput(Globs.convertbin+' -rotate '+degs+' "'+Globs.gallerytempdir+'/tmp.rotated.'+target+'.jpg"') else: # Use PIL (strip off the "") if direction=='rotate right': @@ -308,7 +349,10 @@ def getannotation(target): # Annotations are stored as a file for now (later to be stored in images) atext='' if Globs.annotated.has_key(target): - atext=open(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt').readline() + try: + atext=open(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt').readline() + except: + atext='' message('was annotated') else: message('was not annotated') @@ -405,8 +449,6 @@ def execute(macro, args): tleft='
' tmidd='
' trigh='
\n' - # Add this to the end of each URL to keep some versions of moinmoin happy - Globs.bcomp='&action=show' # Process any form items into a dictionary (values become unique) for item in macro.form.items(): @@ -418,6 +460,16 @@ def execute(macro, args): except AttributeError: pass + # Add this to the end of each URL to keep some versions of moinmoin happy + if formvals.has_key('action'): + if formvals['action']=='content': + # translate content action to print action for now + Globs.bcomp='&action=print' + else: + Globs.bcomp='&action='+formvals['action'] + else: + Globs.bcomp='&action=show' + # Figure out if we have delete privs try: # If a user can delete the page containing the Gallery, then they are considered a Gallery administrator @@ -445,7 +497,11 @@ def execute(macro, args): for component in spagename: compbit=compbit+'/'+component try: - os.mkdir(Globs.gallerytempdirroot+compbit) + # The following line stops an exception being raised when trying + # to create a directory that already exists (thanks Magnus Wahrenberg) + if not os.access(Globs.gallerytempdirroot+compbit, os.F_OK): + os.mkdir(Globs.gallerytempdirroot+compbit) + except: message('Please check permissions on temp dir:'+Globs.gallerytempdirroot,0) return macro.formatter.rawHTML( @@ -540,7 +596,6 @@ def execute(macro, args): target=formvals['target'] # Write an annotation file atext=string.replace(formvals['annotate'],'"','"') - target=formvals['target'] ouf=open(Globs.attachmentdir+'/tmp.annotation.'+target+'.txt','w') ouf.write(atext) ouf.close() @@ -556,11 +611,15 @@ def execute(macro, args): rotend='' if Globs.originals.has_key(target): out.write(navibar(target,'webnail')) + out.write(toolbar(target,'webnail')) if formvals.has_key('rotate'): direction=formvals['rotate'] message(direction) rotate(target,direction) rotend=Globs.galleryrotchar+'rot='+repr(randint(1,10000)) + if formvals.has_key('delete'): + message('Deleted '+target+'',0) + deletefromdisk(target) # Put things in a table out.write(tleft) # Lets build up an image tag @@ -582,7 +641,7 @@ def execute(macro, args): else: out.write(atext) out.write(trigh) - out.write(toolbar(target,'webnail')) + #out.write(toolbar(target,'webnail')) else: message('I do not have file: '+target,0) diff --git a/wiki/parser/EXIF.py b/wiki/parser/EXIF.py index ab6d65b2..154499f0 100644 --- a/wiki/parser/EXIF.py +++ b/wiki/parser/EXIF.py @@ -1,120 +1,1197 @@ -# -*- coding: iso-8859-1 -*- -""" - MoinMoin - Portail parser +# Library to extract EXIF information in digital camera image files +# +# To use this library call with: +# f=open(path_name, 'rb') +# tags=EXIF.process_file(f) +# tags will now be a dictionary mapping names of EXIF tags to their +# values in the file named by path_name. You can process the tags +# as you wish. In particular, you can iterate through all the tags with: +# for tag in tags.keys(): +# if tag not in ('JPEGThumbnail', 'TIFFThumbnail', 'Filename', +# 'EXIF MakerNote'): +# print "Key: %s, value %s" % (tag, tags[tag]) +# (This code uses the if statement to avoid printing out a few of the +# tags that tend to be long or boring.) +# +# The tags dictionary will include keys for all of the usual EXIF +# tags, and will also include keys for Makernotes used by some +# cameras, for which we have a good specification. +# +# Contains code from "exifdump.py" originally written by Thierry Bousch +# and released into the public domain. +# +# Updated and turned into general-purpose library by Gene Cash +# +# This copyright license is intended to be similar to the FreeBSD license. +# +# Copyright 2002 Gene Cash All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the +# distribution. +# +# THIS SOFTWARE IS PROVIDED BY GENE CASH ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +# DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR +# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# This means you may do anything you want with this code, except claim you +# wrote it. Also, if it breaks you get to keep both pieces. +# +# Patch Contributors: +# * Simon J. Gerraty +# s2n fix & orientation decode +# * John T. Riedl +# Added support for newer Nikon type 3 Makernote format for D70 and some +# other Nikon cameras. +# * Joerg Schaefer +# Fixed subtle bug when faking an EXIF header, which affected maker notes +# using relative offsets, and a fix for Nikon D100. +# +# 21-AUG-99 TB Last update by Thierry Bousch to his code. +# 17-JAN-02 CEC Discovered code on web. +# Commented everything. +# Made small code improvements. +# Reformatted for readability. +# 19-JAN-02 CEC Added ability to read TIFFs and JFIF-format JPEGs. +# Added ability to extract JPEG formatted thumbnail. +# Added ability to read GPS IFD (not tested). +# Converted IFD data structure to dictionaries indexed by +# tag name. +# Factored into library returning dictionary of IFDs plus +# thumbnail, if any. +# 20-JAN-02 CEC Added MakerNote processing logic. +# Added Olympus MakerNote. +# Converted data structure to single-level dictionary, avoiding +# tag name collisions by prefixing with IFD name. This makes +# it much easier to use. +# 23-JAN-02 CEC Trimmed nulls from end of string values. +# 25-JAN-02 CEC Discovered JPEG thumbnail in Olympus TIFF MakerNote. +# 26-JAN-02 CEC Added ability to extract TIFF thumbnails. +# Added Nikon, Fujifilm, Casio MakerNotes. +# 30-NOV-03 CEC Fixed problem with canon_decode_tag() not creating an +# IFD_Tag() object. +# 15-FEB-04 CEC Finally fixed bit shift warning by converting Y to 0L. +# - PURPOSE: - une boite jolie +# field type descriptions as (length, abbreviation, full name) tuples +FIELD_TYPES=( + (0, 'X', 'Proprietary'), # no such type + (1, 'B', 'Byte'), + (1, 'A', 'ASCII'), + (2, 'S', 'Short'), + (4, 'L', 'Long'), + (8, 'R', 'Ratio'), + (1, 'SB', 'Signed Byte'), + (1, 'U', 'Undefined'), + (2, 'SS', 'Signed Short'), + (4, 'SL', 'Signed Long'), + (8, 'SR', 'Signed Ratio') + ) - CALLING SEQUENCE: - {{{ - #!Box titre - blablabla - - tables, images.... - }}} +# dictionary of main EXIF tag names +# first element of tuple is tag name, optional second element is +# another dictionary giving names to values +EXIF_TAGS={ + 0x0100: ('ImageWidth', ), + 0x0101: ('ImageLength', ), + 0x0102: ('BitsPerSample', ), + 0x0103: ('Compression', + {1: 'Uncompressed TIFF', + 6: 'JPEG Compressed'}), + 0x0106: ('PhotometricInterpretation', ), + 0x010A: ('FillOrder', ), + 0x010D: ('DocumentName', ), + 0x010E: ('ImageDescription', ), + 0x010F: ('Make', ), + 0x0110: ('Model', ), + 0x0111: ('StripOffsets', ), + 0x0112: ('Orientation', + {1: 'Horizontal (normal)', + 2: 'Mirrored horizontal', + 3: 'Rotated 180', + 4: 'Mirrored vertical', + 5: 'Mirrored horizontal then rotated 90 CCW', + 6: 'Rotated 90 CW', + 7: 'Mirrored horizontal then rotated 90 CW', + 8: 'Rotated 90 CCW'}), + 0x0115: ('SamplesPerPixel', ), + 0x0116: ('RowsPerStrip', ), + 0x0117: ('StripByteCounts', ), + 0x011A: ('XResolution', ), + 0x011B: ('YResolution', ), + 0x011C: ('PlanarConfiguration', ), + 0x0128: ('ResolutionUnit', + {1: 'Not Absolute', + 2: 'Pixels/Inch', + 3: 'Pixels/Centimeter'}), + 0x012D: ('TransferFunction', ), + 0x0131: ('Software', ), + 0x0132: ('DateTime', ), + 0x013B: ('Artist', ), + 0x013E: ('WhitePoint', ), + 0x013F: ('PrimaryChromaticities', ), + 0x0156: ('TransferRange', ), + 0x0200: ('JPEGProc', ), + 0x0201: ('JPEGInterchangeFormat', ), + 0x0202: ('JPEGInterchangeFormatLength', ), + 0x0211: ('YCbCrCoefficients', ), + 0x0212: ('YCbCrSubSampling', ), + 0x0213: ('YCbCrPositioning', ), + 0x0214: ('ReferenceBlackWhite', ), + 0x828D: ('CFARepeatPatternDim', ), + 0x828E: ('CFAPattern', ), + 0x828F: ('BatteryLevel', ), + 0x8298: ('Copyright', ), + 0x829A: ('ExposureTime', ), + 0x829D: ('FNumber', ), + 0x83BB: ('IPTC/NAA', ), + 0x8769: ('ExifOffset', ), + 0x8773: ('InterColorProfile', ), + 0x8822: ('ExposureProgram', + {0: 'Unidentified', + 1: 'Manual', + 2: 'Program Normal', + 3: 'Aperture Priority', + 4: 'Shutter Priority', + 5: 'Program Creative', + 6: 'Program Action', + 7: 'Portrait Mode', + 8: 'Landscape Mode'}), + 0x8824: ('SpectralSensitivity', ), + 0x8825: ('GPSInfo', ), + 0x8827: ('ISOSpeedRatings', ), + 0x8828: ('OECF', ), + # print as string + #0x9000: ('ExifVersion', lambda x: ''.join(map(chr, x))), + 0x9003: ('DateTimeOriginal', ), + 0x9004: ('DateTimeDigitized', ), + 0x9101: ('ComponentsConfiguration', + {0: '', + 1: 'Y', + 2: 'Cb', + 3: 'Cr', + 4: 'Red', + 5: 'Green', + 6: 'Blue'}), + 0x9102: ('CompressedBitsPerPixel', ), + 0x9201: ('ShutterSpeedValue', ), + 0x9202: ('ApertureValue', ), + 0x9203: ('BrightnessValue', ), + 0x9204: ('ExposureBiasValue', ), + 0x9205: ('MaxApertureValue', ), + 0x9206: ('SubjectDistance', ), + 0x9207: ('MeteringMode', + {0: 'Unidentified', + 1: 'Average', + 2: 'CenterWeightedAverage', + 3: 'Spot', + 4: 'MultiSpot'}), + 0x9208: ('LightSource', + {0: 'Unknown', + 1: 'Daylight', + 2: 'Fluorescent', + 3: 'Tungsten', + 10: 'Flash', + 17: 'Standard Light A', + 18: 'Standard Light B', + 19: 'Standard Light C', + 20: 'D55', + 21: 'D65', + 22: 'D75', + 255: 'Other'}), + 0x9209: ('Flash', {0: 'No', + 1: 'Fired', + 5: 'Fired (?)', # no return sensed + 7: 'Fired (!)', # return sensed + 9: 'Fill Fired', + 13: 'Fill Fired (?)', + 15: 'Fill Fired (!)', + 16: 'Off', + 24: 'Auto Off', + 25: 'Auto Fired', + 29: 'Auto Fired (?)', + 31: 'Auto Fired (!)', + 32: 'Not Available'}), + 0x920A: ('FocalLength', ), + 0x927C: ('MakerNote', ), + # print as string + #0x9286: ('UserComment', lambda x: ''.join(map(chr, x))), + 0x9290: ('SubSecTime', ), + 0x9291: ('SubSecTimeOriginal', ), + 0x9292: ('SubSecTimeDigitized', ), + # print as string + #0xA000: ('FlashPixVersion', lambda x: ''.join(map(chr, x))), + 0xA001: ('ColorSpace', ), + 0xA002: ('ExifImageWidth', ), + 0xA003: ('ExifImageLength', ), + 0xA005: ('InteroperabilityOffset', ), + 0xA20B: ('FlashEnergy', ), # 0x920B in TIFF/EP + 0xA20C: ('SpatialFrequencyResponse', ), # 0x920C - - + 0xA20E: ('FocalPlaneXResolution', ), # 0x920E - - + 0xA20F: ('FocalPlaneYResolution', ), # 0x920F - - + 0xA210: ('FocalPlaneResolutionUnit', ), # 0x9210 - - + 0xA214: ('SubjectLocation', ), # 0x9214 - - + 0xA215: ('ExposureIndex', ), # 0x9215 - - + 0xA217: ('SensingMethod', ), # 0x9217 - - + 0xA300: ('FileSource', + {3: 'Digital Camera'}), + 0xA301: ('SceneType', + {1: 'Directly Photographed'}), + 0xA302: ('CVAPattern',), + } -""" -from MoinMoin.parser import wiki -import os,string,re,StringIO -from MoinMoin.action import AttachFile +# interoperability tags +INTR_TAGS={ + 0x0001: ('InteroperabilityIndex', ), + 0x0002: ('InteroperabilityVersion', ), + 0x1000: ('RelatedImageFileFormat', ), + 0x1001: ('RelatedImageWidth', ), + 0x1002: ('RelatedImageLength', ), + } -color_list = ['orange', 'black', 'red', 'green', 'blue', 'gray'] +# GPS tags (not used yet, haven't seen camera with GPS) +GPS_TAGS={ + 0x0000: ('GPSVersionID', ), + 0x0001: ('GPSLatitudeRef', ), + 0x0002: ('GPSLatitude', ), + 0x0003: ('GPSLongitudeRef', ), + 0x0004: ('GPSLongitude', ), + 0x0005: ('GPSAltitudeRef', ), + 0x0006: ('GPSAltitude', ), + 0x0007: ('GPSTimeStamp', ), + 0x0008: ('GPSSatellites', ), + 0x0009: ('GPSStatus', ), + 0x000A: ('GPSMeasureMode', ), + 0x000B: ('GPSDOP', ), + 0x000C: ('GPSSpeedRef', ), + 0x000D: ('GPSSpeed', ), + 0x000E: ('GPSTrackRef', ), + 0x000F: ('GPSTrack', ), + 0x0010: ('GPSImgDirectionRef', ), + 0x0011: ('GPSImgDirection', ), + 0x0012: ('GPSMapDatum', ), + 0x0013: ('GPSDestLatitudeRef', ), + 0x0014: ('GPSDestLatitude', ), + 0x0015: ('GPSDestLongitudeRef', ), + 0x0016: ('GPSDestLongitude', ), + 0x0017: ('GPSDestBearingRef', ), + 0x0018: ('GPSDestBearing', ), + 0x0019: ('GPSDestDistanceRef', ), + 0x001A: ('GPSDestDistance', ) + } +# Nikon E99x MakerNote Tags +# http://members.tripod.com/~tawba/990exif.htm +MAKERNOTE_NIKON_NEWER_TAGS={ + 0x0002: ('ISOSetting', ), + 0x0003: ('ColorMode', ), + 0x0004: ('Quality', ), + 0x0005: ('Whitebalance', ), + 0x0006: ('ImageSharpening', ), + 0x0007: ('FocusMode', ), + 0x0008: ('FlashSetting', ), + 0x0009: ('AutoFlashMode', ), + 0x000B: ('WhiteBalanceBias', ), + 0x000C: ('WhiteBalanceRBCoeff', ), + 0x000F: ('ISOSelection', ), + 0x0012: ('FlashCompensation', ), + 0x0013: ('ISOSpeedRequested', ), + 0x0016: ('PhotoCornerCoordinates', ), + 0x0018: ('FlashBracketCompensationApplied', ), + 0x0019: ('AEBracketCompensationApplied', ), + 0x0080: ('ImageAdjustment', ), + 0x0081: ('ToneCompensation', ), + 0x0082: ('AuxiliaryLens', ), + 0x0083: ('LensType', ), + 0x0084: ('LensMinMaxFocalMaxAperture', ), + 0x0085: ('ManualFocusDistance', ), + 0x0086: ('DigitalZoomFactor', ), + 0x0088: ('AFFocusPosition', + {0x0000: 'Center', + 0x0100: 'Top', + 0x0200: 'Bottom', + 0x0300: 'Left', + 0x0400: 'Right'}), + 0x0089: ('BracketingMode', + {0x00: 'Single frame, no bracketing', + 0x01: 'Continuous, no bracketing', + 0x02: 'Timer, no bracketing', + 0x10: 'Single frame, exposure bracketing', + 0x11: 'Continuous, exposure bracketing', + 0x12: 'Timer, exposure bracketing', + 0x40: 'Single frame, white balance bracketing', + 0x41: 'Continuous, white balance bracketing', + 0x42: 'Timer, white balance bracketing'}), + 0x008D: ('ColorMode', ), + 0x008F: ('SceneMode?', ), + 0x0090: ('LightingType', ), + 0x0092: ('HueAdjustment', ), + 0x0094: ('Saturation', + {-3: 'B&W', + -2: '-2', + -1: '-1', + 0: '0', + 1: '1', + 2: '2'}), + 0x0095: ('NoiseReduction', ), + 0x00A7: ('TotalShutterReleases', ), + 0x00A9: ('ImageOptimization', ), + 0x00AA: ('Saturation', ), + 0x00AB: ('DigitalVariProgram', ), + 0x0010: ('DataDump', ) + } -##################################################################### -# Fonctions # -##################################################################### -# to_wikiname : transfome la chaine text avec le parser wiki -# classique et le formateur formatter -# (je sais pas a quoi sert request, mais faut pas -# l'enlever !) -####### +MAKERNOTE_NIKON_OLDER_TAGS={ + 0x0003: ('Quality', + {1: 'VGA Basic', + 2: 'VGA Normal', + 3: 'VGA Fine', + 4: 'SXGA Basic', + 5: 'SXGA Normal', + 6: 'SXGA Fine'}), + 0x0004: ('ColorMode', + {1: 'Color', + 2: 'Monochrome'}), + 0x0005: ('ImageAdjustment', + {0: 'Normal', + 1: 'Bright+', + 2: 'Bright-', + 3: 'Contrast+', + 4: 'Contrast-'}), + 0x0006: ('CCDSpeed', + {0: 'ISO 80', + 2: 'ISO 160', + 4: 'ISO 320', + 5: 'ISO 100'}), + 0x0007: ('WhiteBalance', + {0: 'Auto', + 1: 'Preset', + 2: 'Daylight', + 3: 'Incandescent', + 4: 'Fluorescent', + 5: 'Cloudy', + 6: 'Speed Light'}) + } -def to_wikiname(request,formatter,text): - ##taken from MiniPage - out=StringIO.StringIO() - request.redirect(out) - wikiizer = wiki.Parser(text,request) - wikiizer.format(formatter) - result=out.getvalue() - request.redirect() - del out - - return result.strip() - -##################################################################### -# BoxFormatter : creer le code html -####### -class BoxFormatter: - - def __init__(self, request, formatter): - self.formatter = formatter - self.request = request - self.counter = 0 +# decode Olympus SpecialMode tag in MakerNote +def olympus_special_mode(v): + a={ + 0: 'Normal', + 1: 'Unknown', + 2: 'Fast', + 3: 'Panorama'} + b={ + 0: 'Non-panoramic', + 1: 'Left to right', + 2: 'Right to left', + 3: 'Bottom to top', + 4: 'Top to bottom'} + return '%s - sequence %d - %s' % (a[v[0]], v[1], b[v[2]]) - def make(self, title, body_html, color=None): - if color==None: - css_color_class=u"" - else: - css_color_class = u" %s_box" % color - html = [ - self.formatter.rawHTML(u'
' % css_color_class), - self.formatter.rawHTML(u'
'), - self.formatter.heading(1,3), - title, - self.formatter.heading(0,3), - self.formatter.rawHTML(u'
'), - self.formatter.rawHTML(u'
'), - self.formatter.rawHTML(u'
'), - body_html, - self.formatter.rawHTML(u'
'), - self.formatter.rawHTML(u'
'), - self.formatter.rawHTML(u'
'), - ] - self.request.write(u'\n'.join(html)) +MAKERNOTE_OLYMPUS_TAGS={ + # ah HAH! those sneeeeeaky bastids! this is how they get past the fact + # that a JPEG thumbnail is not allowed in an uncompressed TIFF file + 0x0100: ('JPEGThumbnail', ), + 0x0200: ('SpecialMode', olympus_special_mode), + 0x0201: ('JPEGQual', + {1: 'SQ', + 2: 'HQ', + 3: 'SHQ'}), + 0x0202: ('Macro', + {0: 'Normal', + 1: 'Macro'}), + 0x0204: ('DigitalZoom', ), + 0x0207: ('SoftwareRelease', ), + 0x0208: ('PictureInfo', ), + # print as string + 0x0209: ('CameraID', lambda x: ''.join(map(chr, x))), + 0x0F00: ('DataDump', ) + } -##################################################################### -# Parser : classe principale, c'est elle qui parse -####### -class Parser: +MAKERNOTE_CASIO_TAGS={ + 0x0001: ('RecordingMode', + {1: 'Single Shutter', + 2: 'Panorama', + 3: 'Night Scene', + 4: 'Portrait', + 5: 'Landscape'}), + 0x0002: ('Quality', + {1: 'Economy', + 2: 'Normal', + 3: 'Fine'}), + 0x0003: ('FocusingMode', + {2: 'Macro', + 3: 'Auto Focus', + 4: 'Manual Focus', + 5: 'Infinity'}), + 0x0004: ('FlashMode', + {1: 'Auto', + 2: 'On', + 3: 'Off', + 4: 'Red Eye Reduction'}), + 0x0005: ('FlashIntensity', + {11: 'Weak', + 13: 'Normal', + 15: 'Strong'}), + 0x0006: ('Object Distance', ), + 0x0007: ('WhiteBalance', + {1: 'Auto', + 2: 'Tungsten', + 3: 'Daylight', + 4: 'Fluorescent', + 5: 'Shade', + 129: 'Manual'}), + 0x000B: ('Sharpness', + {0: 'Normal', + 1: 'Soft', + 2: 'Hard'}), + 0x000C: ('Contrast', + {0: 'Normal', + 1: 'Low', + 2: 'High'}), + 0x000D: ('Saturation', + {0: 'Normal', + 1: 'Low', + 2: 'High'}), + 0x0014: ('CCDSpeed', + {64: 'Normal', + 80: 'Normal', + 100: 'High', + 125: '+1.0', + 244: '+3.0', + 250: '+2.0',}) + } + +MAKERNOTE_FUJIFILM_TAGS={ + 0x0000: ('NoteVersion', lambda x: ''.join(map(chr, x))), + 0x1000: ('Quality', ), + 0x1001: ('Sharpness', + {1: 'Soft', + 2: 'Soft', + 3: 'Normal', + 4: 'Hard', + 5: 'Hard'}), + 0x1002: ('WhiteBalance', + {0: 'Auto', + 256: 'Daylight', + 512: 'Cloudy', + 768: 'DaylightColor-Fluorescent', + 769: 'DaywhiteColor-Fluorescent', + 770: 'White-Fluorescent', + 1024: 'Incandescent', + 3840: 'Custom'}), + 0x1003: ('Color', + {0: 'Normal', + 256: 'High', + 512: 'Low'}), + 0x1004: ('Tone', + {0: 'Normal', + 256: 'High', + 512: 'Low'}), + 0x1010: ('FlashMode', + {0: 'Auto', + 1: 'On', + 2: 'Off', + 3: 'Red Eye Reduction'}), + 0x1011: ('FlashStrength', ), + 0x1020: ('Macro', + {0: 'Off', + 1: 'On'}), + 0x1021: ('FocusMode', + {0: 'Auto', + 1: 'Manual'}), + 0x1030: ('SlowSync', + {0: 'Off', + 1: 'On'}), + 0x1031: ('PictureMode', + {0: 'Auto', + 1: 'Portrait', + 2: 'Landscape', + 4: 'Sports', + 5: 'Night', + 6: 'Program AE', + 256: 'Aperture Priority AE', + 512: 'Shutter Priority AE', + 768: 'Manual Exposure'}), + 0x1100: ('MotorOrBracket', + {0: 'Off', + 1: 'On'}), + 0x1300: ('BlurWarning', + {0: 'Off', + 1: 'On'}), + 0x1301: ('FocusWarning', + {0: 'Off', + 1: 'On'}), + 0x1302: ('AEWarning', + {0: 'Off', + 1: 'On'}) + } + +MAKERNOTE_CANON_TAGS={ + 0x0006: ('ImageType', ), + 0x0007: ('FirmwareVersion', ), + 0x0008: ('ImageNumber', ), + 0x0009: ('OwnerName', ) + } + +# see http://www.burren.cx/david/canon.html by David Burren +# this is in element offset, name, optional value dictionary format +MAKERNOTE_CANON_TAG_0x001={ + 1: ('Macromode', + {1: 'Macro', + 2: 'Normal'}), + 2: ('SelfTimer', ), + 3: ('Quality', + {2: 'Normal', + 3: 'Fine', + 5: 'Superfine'}), + 4: ('FlashMode', + {0: 'Flash Not Fired', + 1: 'Auto', + 2: 'On', + 3: 'Red-Eye Reduction', + 4: 'Slow Synchro', + 5: 'Auto + Red-Eye Reduction', + 6: 'On + Red-Eye Reduction', + 16: 'external flash'}), + 5: ('ContinuousDriveMode', + {0: 'Single Or Timer', + 1: 'Continuous'}), + 7: ('FocusMode', + {0: 'One-Shot', + 1: 'AI Servo', + 2: 'AI Focus', + 3: 'MF', + 4: 'Single', + 5: 'Continuous', + 6: 'MF'}), + 10: ('ImageSize', + {0: 'Large', + 1: 'Medium', + 2: 'Small'}), + 11: ('EasyShootingMode', + {0: 'Full Auto', + 1: 'Manual', + 2: 'Landscape', + 3: 'Fast Shutter', + 4: 'Slow Shutter', + 5: 'Night', + 6: 'B&W', + 7: 'Sepia', + 8: 'Portrait', + 9: 'Sports', + 10: 'Macro/Close-Up', + 11: 'Pan Focus'}), + 12: ('DigitalZoom', + {0: 'None', + 1: '2x', + 2: '4x'}), + 13: ('Contrast', + {0xFFFF: 'Low', + 0: 'Normal', + 1: 'High'}), + 14: ('Saturation', + {0xFFFF: 'Low', + 0: 'Normal', + 1: 'High'}), + 15: ('Sharpness', + {0xFFFF: 'Low', + 0: 'Normal', + 1: 'High'}), + 16: ('ISO', + {0: 'See ISOSpeedRatings Tag', + 15: 'Auto', + 16: '50', + 17: '100', + 18: '200', + 19: '400'}), + 17: ('MeteringMode', + {3: 'Evaluative', + 4: 'Partial', + 5: 'Center-weighted'}), + 18: ('FocusType', + {0: 'Manual', + 1: 'Auto', + 3: 'Close-Up (Macro)', + 8: 'Locked (Pan Mode)'}), + 19: ('AFPointSelected', + {0x3000: 'None (MF)', + 0x3001: 'Auto-Selected', + 0x3002: 'Right', + 0x3003: 'Center', + 0x3004: 'Left'}), + 20: ('ExposureMode', + {0: 'Easy Shooting', + 1: 'Program', + 2: 'Tv-priority', + 3: 'Av-priority', + 4: 'Manual', + 5: 'A-DEP'}), + 23: ('LongFocalLengthOfLensInFocalUnits', ), + 24: ('ShortFocalLengthOfLensInFocalUnits', ), + 25: ('FocalUnitsPerMM', ), + 28: ('FlashActivity', + {0: 'Did Not Fire', + 1: 'Fired'}), + 29: ('FlashDetails', + {14: 'External E-TTL', + 13: 'Internal Flash', + 11: 'FP Sync Used', + 7: '2nd("Rear")-Curtain Sync Used', + 4: 'FP Sync Enabled'}), + 32: ('FocusMode', + {0: 'Single', + 1: 'Continuous'}) + } + +MAKERNOTE_CANON_TAG_0x004={ + 7: ('WhiteBalance', + {0: 'Auto', + 1: 'Sunny', + 2: 'Cloudy', + 3: 'Tungsten', + 4: 'Fluorescent', + 5: 'Flash', + 6: 'Custom'}), + 9: ('SequenceNumber', ), + 14: ('AFPointUsed', ), + 15: ('FlashBias', + {0XFFC0: '-2 EV', + 0XFFCC: '-1.67 EV', + 0XFFD0: '-1.50 EV', + 0XFFD4: '-1.33 EV', + 0XFFE0: '-1 EV', + 0XFFEC: '-0.67 EV', + 0XFFF0: '-0.50 EV', + 0XFFF4: '-0.33 EV', + 0X0000: '0 EV', + 0X000C: '0.33 EV', + 0X0010: '0.50 EV', + 0X0014: '0.67 EV', + 0X0020: '1 EV', + 0X002C: '1.33 EV', + 0X0030: '1.50 EV', + 0X0034: '1.67 EV', + 0X0040: '2 EV'}), + 19: ('SubjectDistance', ) + } + +# extract multibyte integer in Motorola format (little endian) +def s2n_motorola(str): + x=0 + for c in str: + x=(x << 8) | ord(c) + return x + +# extract multibyte integer in Intel format (big endian) +def s2n_intel(str): + x=0 + y=0L + for c in str: + x=x | (ord(c) << y) + y=y+8 + return x + +# ratio object that eventually will be able to reduce itself to lowest +# common denominator for printing +def gcd(a, b): + if b == 0: + return a + else: + return gcd(b, a % b) + +class Ratio: + def __init__(self, num, den): + self.num=num + self.den=den + + def __repr__(self): + self.reduce() + if self.den == 1: + return str(self.num) + return '%d/%d' % (self.num, self.den) + + def reduce(self): + div=gcd(self.num, self.den) + if div > 1: + self.num=self.num/div + self.den=self.den/div + +# for ease of dealing with tags +class IFD_Tag: + def __init__(self, printable, tag, field_type, values, field_offset, + field_length): + # printable version of data + self.printable=printable + # tag ID number + self.tag=tag + # field type as index into FIELD_TYPES + self.field_type=field_type + # offset of start of field in bytes from beginning of IFD + self.field_offset=field_offset + # length of data field in bytes + self.field_length=field_length + # either a string or array of data items + self.values=values + + def __str__(self): + return self.printable - def __init__(self, raw, request, **kw): - self.request = request - self.raw = raw - self.settings={'title': u'|'.join([u" ".join(kw.keys()), u" ".join(kw.values())])} - self.settings = self.parseArgs(kw["format_args"]) + def __repr__(self): + return '(0x%04X) %s=%s @ %d' % (self.tag, + FIELD_TYPES[self.field_type][2], + self.printable, + self.field_offset) - def getRandomColor(self): - nb_of_colors = color_list.__len__() - from random import randint - colorNum = randint(0, nb_of_colors - 1) - return color_list[colorNum] +# class that handles an EXIF header +class EXIF_header: + def __init__(self, file, endian, offset, fake_exif, debug=0): + self.file=file + self.endian=endian + self.offset=offset + self.fake_exif=fake_exif + self.debug=debug + self.tags={} - def parseArgs(self, argsString): - argList = argsString.split(u',') - settings = {} - for anArg in argList: - anArg = anArg.strip(u' ') - if anArg.find(u'color=')!=-1: - theColor = anArg.split(u'=')[1].lower() - if theColor == 'random': - theColor = self.getRandomColor() - settings['color'] = theColor + # convert slice to integer, based on sign and endian flags + # usually this offset is assumed to be relative to the beginning of the + # start of the EXIF information. For some cameras that use relative tags, + # this offset may be relative to some other starting point. + def s2n(self, offset, length, signed=0): + self.file.seek(self.offset+offset) + slice=self.file.read(length) + if self.endian == 'I': + val=s2n_intel(slice) + else: + val=s2n_motorola(slice) + # Sign extension ? + if signed: + msb=1L << (8*length-1) + if val & msb: + val=val-(msb << 1) + return val + + # convert offset to string + def n2s(self, offset, length): + s='' + for i in range(length): + if self.endian == 'I': + s=s+chr(offset & 0xFF) else: - settings['title'] = anArg - return settings - - def format(self, formatter): - quotes = self.raw - - # on utilise la classe qui va fabriquer le code html - boite = BoxFormatter(self.request, formatter) - title = self.settings['title'] - content = to_wikiname(self.request, formatter, quotes) - try: - color = self.settings['color'] - except: - color=None - boite.make(title, content, color) - return + s=chr(offset & 0xFF)+s + offset=offset >> 8 + return s + + # return first IFD + def first_IFD(self): + return self.s2n(4, 4) + # return pointer to next IFD + def next_IFD(self, ifd): + entries=self.s2n(ifd, 2) + return self.s2n(ifd+2+12*entries, 4) + + # return list of IFDs in header + def list_IFDs(self): + i=self.first_IFD() + a=[] + while i: + a.append(i) + i=self.next_IFD(i) + return a + + # return list of entries in this IFD + def dump_IFD(self, ifd, ifd_name, dict=EXIF_TAGS, relative=0): + entries=self.s2n(ifd, 2) + for i in range(entries): + # entry is index of start of this IFD in the file + entry=ifd+2+12*i + tag=self.s2n(entry, 2) + # get tag name. We do it early to make debugging easier + tag_entry=dict.get(tag) + if tag_entry: + tag_name=tag_entry[0] + else: + tag_name='Tag 0x%04X' % tag + field_type=self.s2n(entry+2, 2) + if not 0 < field_type < len(FIELD_TYPES): + # unknown field type + raise ValueError, \ + 'unknown type %d in tag 0x%04X' % (field_type, tag) + typelen=FIELD_TYPES[field_type][0] + count=self.s2n(entry+4, 4) + offset=entry+8 + if count*typelen > 4: + # offset is not the value; it's a pointer to the value + # if relative we set things up so s2n will seek to the right + # place when it adds self.offset. Note that this 'relative' + # is for the Nikon type 3 makernote. Other cameras may use + # other relative offsets, which would have to be computed here + # slightly differently. + if relative: + tmp_offset=self.s2n(offset, 4) + offset=tmp_offset+ifd-self.offset+4 + if self.fake_exif: + offset=offset+18 + else: + offset=self.s2n(offset, 4) + field_offset=offset + if field_type == 2: + # special case: null-terminated ASCII string + if count != 0: + self.file.seek(self.offset+offset) + values=self.file.read(count) + values=values.strip().replace('\x00','') + else: + values='' + else: + values=[] + signed=(field_type in [6, 8, 9, 10]) + for j in range(count): + if field_type in (5, 10): + # a ratio + value_j=Ratio(self.s2n(offset, 4, signed), + self.s2n(offset+4, 4, signed)) + else: + value_j=self.s2n(offset, typelen, signed) + values.append(value_j) + offset=offset+typelen + # now "values" is either a string or an array + if count == 1 and field_type != 2: + printable=str(values[0]) + else: + printable=str(values) + # compute printable version of values + if tag_entry: + if len(tag_entry) != 1: + # optional 2nd tag element is present + if callable(tag_entry[1]): + # call mapping function + printable=tag_entry[1](values) + else: + printable='' + for i in values: + # use lookup table for this tag + printable+=tag_entry[1].get(i, repr(i)) + self.tags[ifd_name+' '+tag_name]=IFD_Tag(printable, tag, + field_type, + values, field_offset, + count*typelen) + if self.debug: + print ' debug: %s: %s' % (tag_name, + repr(self.tags[ifd_name+' '+tag_name])) + + # extract uncompressed TIFF thumbnail (like pulling teeth) + # we take advantage of the pre-existing layout in the thumbnail IFD as + # much as possible + def extract_TIFF_thumbnail(self, thumb_ifd): + entries=self.s2n(thumb_ifd, 2) + # this is header plus offset to IFD ... + if self.endian == 'M': + tiff='MM\x00*\x00\x00\x00\x08' + else: + tiff='II*\x00\x08\x00\x00\x00' + # ... plus thumbnail IFD data plus a null "next IFD" pointer + self.file.seek(self.offset+thumb_ifd) + tiff+=self.file.read(entries*12+2)+'\x00\x00\x00\x00' + + # fix up large value offset pointers into data area + for i in range(entries): + entry=thumb_ifd+2+12*i + tag=self.s2n(entry, 2) + field_type=self.s2n(entry+2, 2) + typelen=FIELD_TYPES[field_type][0] + count=self.s2n(entry+4, 4) + oldoff=self.s2n(entry+8, 4) + # start of the 4-byte pointer area in entry + ptr=i*12+18 + # remember strip offsets location + if tag == 0x0111: + strip_off=ptr + strip_len=count*typelen + # is it in the data area? + if count*typelen > 4: + # update offset pointer (nasty "strings are immutable" crap) + # should be able to say "tiff[ptr:ptr+4]=newoff" + newoff=len(tiff) + tiff=tiff[:ptr]+self.n2s(newoff, 4)+tiff[ptr+4:] + # remember strip offsets location + if tag == 0x0111: + strip_off=newoff + strip_len=4 + # get original data and store it + self.file.seek(self.offset+oldoff) + tiff+=self.file.read(count*typelen) + + # add pixel strips and update strip offset info + old_offsets=self.tags['Thumbnail StripOffsets'].values + old_counts=self.tags['Thumbnail StripByteCounts'].values + for i in range(len(old_offsets)): + # update offset pointer (more nasty "strings are immutable" crap) + offset=self.n2s(len(tiff), strip_len) + tiff=tiff[:strip_off]+offset+tiff[strip_off+strip_len:] + strip_off+=strip_len + # add pixel strip to end + self.file.seek(self.offset+old_offsets[i]) + tiff+=self.file.read(old_counts[i]) + + self.tags['TIFFThumbnail']=tiff + + # decode all the camera-specific MakerNote formats + + # Note is the data that comprises this MakerNote. The MakerNote will + # likely have pointers in it that point to other parts of the file. We'll + # use self.offset as the starting point for most of those pointers, since + # they are relative to the beginning of the file. + # + # If the MakerNote is in a newer format, it may use relative addressing + # within the MakerNote. In that case we'll use relative addresses for the + # pointers. + # + # As an aside: it's not just to be annoying that the manufacturers use + # relative offsets. It's so that if the makernote has to be moved by the + # picture software all of the offsets don't have to be adjusted. Overall, + # this is probably the right strategy for makernotes, though the spec is + # ambiguous. (The spec does not appear to imagine that makernotes would + # follow EXIF format internally. Once they did, it's ambiguous whether + # the offsets should be from the header at the start of all the EXIF info, + # or from the header at the start of the makernote.) + def decode_maker_note(self): + note=self.tags['EXIF MakerNote'] + make=self.tags['Image Make'].printable + model=self.tags['Image Model'].printable + + # Nikon + # The maker note usually starts with the word Nikon, followed by the + # type of the makernote (1 or 2, as a short). If the word Nikon is + # not at the start of the makernote, it's probably type 2, since some + # cameras work that way. + if make in ('NIKON', 'NIKON CORPORATION'): + if note.values[0:7] == [78, 105, 107, 111, 110, 00, 01]: + if self.debug: + print "Looks like a type 1 Nikon MakerNote." + self.dump_IFD(note.field_offset+8, 'MakerNote', + dict=MAKERNOTE_NIKON_OLDER_TAGS) + elif note.values[0:7] == [78, 105, 107, 111, 110, 00, 02]: + if self.debug: + print "Looks like a labeled type 2 Nikon MakerNote" + if note.values[12:14] != [0, 42] and note.values[12:14] != [42L, 0L]: + raise ValueError, "Missing marker tag '42' in MakerNote." + # skip the Makernote label and the TIFF header + self.dump_IFD(note.field_offset+10+8, 'MakerNote', + dict=MAKERNOTE_NIKON_NEWER_TAGS, relative=1) + else: + # E99x or D1 + if self.debug: + print "Looks like an unlabeled type 2 Nikon MakerNote" + self.dump_IFD(note.field_offset, 'MakerNote', + dict=MAKERNOTE_NIKON_NEWER_TAGS) + return + + # Olympus + if make[:7] == 'OLYMPUS': + self.dump_IFD(note.field_offset+8, 'MakerNote', + dict=MAKERNOTE_OLYMPUS_TAGS) + return + + # Casio + if make == 'Casio': + self.dump_IFD(note.field_offset, 'MakerNote', + dict=MAKERNOTE_CASIO_TAGS) + return + + # Fujifilm + if make == 'FUJIFILM': + # bug: everything else is "Motorola" endian, but the MakerNote + # is "Intel" endian + endian=self.endian + self.endian='I' + # bug: IFD offsets are from beginning of MakerNote, not + # beginning of file header + offset=self.offset + self.offset+=note.field_offset + # process note with bogus values (note is actually at offset 12) + self.dump_IFD(12, 'MakerNote', dict=MAKERNOTE_FUJIFILM_TAGS) + # reset to correct values + self.endian=endian + self.offset=offset + return + + # Canon + if make == 'Canon': + self.dump_IFD(note.field_offset, 'MakerNote', + dict=MAKERNOTE_CANON_TAGS) + for i in (('MakerNote Tag 0x0001', MAKERNOTE_CANON_TAG_0x001), + ('MakerNote Tag 0x0004', MAKERNOTE_CANON_TAG_0x004)): + self.canon_decode_tag(self.tags[i[0]].values, i[1]) + return + + # decode Canon MakerNote tag based on offset within tag + # see http://www.burren.cx/david/canon.html by David Burren + def canon_decode_tag(self, value, dict): + for i in range(1, len(value)): + x=dict.get(i, ('Unknown', )) + if self.debug: + print i, x + name=x[0] + if len(x) > 1: + val=x[1].get(value[i], 'Unknown') + else: + val=value[i] + # it's not a real IFD Tag but we fake one to make everybody + # happy. this will have a "proprietary" type + self.tags['MakerNote '+name]=IFD_Tag(str(val), None, 0, None, + None, None) + +# process an image file (expects an open file object) +# this is the function that has to deal with all the arbitrary nasty bits +# of the EXIF standard +def process_file(file, debug=0): + # determine whether it's a JPEG or TIFF + data=file.read(12) + if data[0:4] in ['II*\x00', 'MM\x00*']: + # it's a TIFF file + file.seek(0) + endian=file.read(1) + file.read(1) + offset=0 + elif data[0:2] == '\xFF\xD8': + # it's a JPEG file + # skip JFIF style header(s) + fake_exif=0 + while data[2] == '\xFF' and data[6:10] in ('JFIF', 'JFXX', 'OLYM'): + length=ord(data[4])*256+ord(data[5]) + file.read(length-8) + # fake an EXIF beginning of file + data='\xFF\x00'+file.read(10) + fake_exif=1 + if data[2] == '\xFF' and data[6:10] == 'Exif': + # detected EXIF header + offset=file.tell() + endian=file.read(1) + else: + # no EXIF information + return {} + else: + # file format not recognized + return {} + + # deal with the EXIF info we found + if debug: + print {'I': 'Intel', 'M': 'Motorola'}[endian], 'format' + hdr=EXIF_header(file, endian, offset, fake_exif, debug) + ifd_list=hdr.list_IFDs() + ctr=0 + for i in ifd_list: + if ctr == 0: + IFD_name='Image' + elif ctr == 1: + IFD_name='Thumbnail' + thumb_ifd=i + else: + IFD_name='IFD %d' % ctr + if debug: + print ' IFD %d (%s) at offset %d:' % (ctr, IFD_name, i) + hdr.dump_IFD(i, IFD_name) + # EXIF IFD + exif_off=hdr.tags.get(IFD_name+' ExifOffset') + if exif_off: + if debug: + print ' EXIF SubIFD at offset %d:' % exif_off.values[0] + hdr.dump_IFD(exif_off.values[0], 'EXIF') + # Interoperability IFD contained in EXIF IFD + intr_off=hdr.tags.get('EXIF SubIFD InteroperabilityOffset') + if intr_off: + if debug: + print ' EXIF Interoperability SubSubIFD at offset %d:' \ + % intr_off.values[0] + hdr.dump_IFD(intr_off.values[0], 'EXIF Interoperability', + dict=INTR_TAGS) + # GPS IFD + gps_off=hdr.tags.get(IFD_name+' GPSInfo') + if gps_off: + if debug: + print ' GPS SubIFD at offset %d:' % gps_off.values[0] + hdr.dump_IFD(gps_off.values[0], 'GPS', dict=GPS_TAGS) + ctr+=1 + + # extract uncompressed TIFF thumbnail + thumb=hdr.tags.get('Thumbnail Compression') + if thumb and thumb.printable == 'Uncompressed TIFF': + hdr.extract_TIFF_thumbnail(thumb_ifd) + + # JPEG thumbnail (thankfully the JPEG data is stored as a unit) + thumb_off=hdr.tags.get('Thumbnail JPEGInterchangeFormat') + if thumb_off: + file.seek(offset+thumb_off.values[0]) + size=hdr.tags['Thumbnail JPEGInterchangeFormatLength'].values[0] + hdr.tags['JPEGThumbnail']=file.read(size) + + # deal with MakerNote contained in EXIF IFD + if hdr.tags.has_key('EXIF MakerNote'): + hdr.decode_maker_note() + + # Sometimes in a TIFF file, a JPEG thumbnail is hidden in the MakerNote + # since it's not allowed in a uncompressed TIFF IFD + if not hdr.tags.has_key('JPEGThumbnail'): + thumb_off=hdr.tags.get('MakerNote JPEGThumbnail') + if thumb_off: + file.seek(offset+thumb_off.values[0]) + hdr.tags['JPEGThumbnail']=file.read(thumb_off.field_length) + + return hdr.tags + +# library test/debug function (dump given files) +if __name__ == '__main__': + import sys + + if len(sys.argv) < 2: + print 'Usage: %s files...\n' % sys.argv[0] + sys.exit(0) + + for filename in sys.argv[1:]: + try: + file=open(filename, 'rb') + except: + print filename, 'unreadable' + print + continue + print filename+':' + # data=process_file(file, 1) # with debug info + data=process_file(file) + if not data: + print 'No EXIF information found' + continue + + x=data.keys() + x.sort() + for i in x: + if i in ('JPEGThumbnail', 'TIFFThumbnail'): + continue + try: + print ' %s (%s): %s' % \ + (i, FIELD_TYPES[data[i].field_type][2], data[i].printable) + except: + print 'error', i, '"', data[i], '"' + if data.has_key('JPEGThumbnail'): + print 'File has JPEG thumbnail' + print + + +class Parser: + pass