def __parseIFDs(self, base, start, end, IFD=""):
assert IFD != ""
log("Enter", "[%s]"%(IFD), "add")
if not self._file:
assert False
entries = getBytes2(self._file, self._orderAPP1)
log("Number of entries = %d"%(entries))
for idx in xrange(entries):
tag = getBytes2(self._file, self._orderAPP1)
dataFormat = getBytes2(self._file, self._orderAPP1)
numOfComps = getBytes4(self._file, self._orderAPP1)
posBeforeDataOffset = nowAt(self._file)
dataOffset = getBytes4(self._file, self._orderAPP1)
posAfterDataOffset = nowAt(self._file)
if 0 == dataFormat or dataFormat >= len(EXIF_TIFF_DATAFORMAT_LIST):
assert False, "dataformat incorrect = %d"%(dataFormat)
continue
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[dataFormat]
dataSize = bytesPerComp * numOfComps
if dataSize > 4:
targetOffset = base + dataOffset
if targetOffset <= start or targetOffset >= end:
continue
else:
seekTo(self._file, targetOffset)
else:
seekTo(self._file, posBeforeDataOffset)
entry = self.__getDataFromFormat(tag, dataFormat, dataSize)
seekTo(self._file, posAfterDataOffset)
log("Leave", "[%s]"%(IFD), "remove")
def __parseIFDs(self, base, start, end, IFD=""):
assert IFD != ""
log("Enter", "[%s]" % (IFD), "add")
if not self._file:
assert False
entries = getBytes2(self._file, self._orderAPP1)
log("Number of entries = %d" % (entries))
for idx in xrange(entries):
tag = getBytes2(self._file, self._orderAPP1)
dataFormat = getBytes2(self._file, self._orderAPP1)
numOfComps = getBytes4(self._file, self._orderAPP1)
posBeforeDataOffset = nowAt(self._file)
dataOffset = getBytes4(self._file, self._orderAPP1)
posAfterDataOffset = nowAt(self._file)
if 0 == dataFormat or dataFormat >= len(EXIF_TIFF_DATAFORMAT_LIST):
assert False, "dataformat incorrect = %d" % (dataFormat)
continue
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[dataFormat]
dataSize = bytesPerComp * numOfComps
if dataSize > 4:
targetOffset = base + dataOffset
if targetOffset <= start or targetOffset >= end:
continue
else:
seekTo(self._file, targetOffset)
else:
seekTo(self._file, posBeforeDataOffset)
entry = self.__getDataFromFormat(tag, dataFormat, dataSize)
seekTo(self._file, posAfterDataOffset)
log("Leave", "[%s]" % (IFD), "remove")
def GetCurveHelper(_fd, sig):
reserved = getBytes4(_fd)
assert reserved == 0
count = getBytes4(_fd)
exp = None
tblLookUp = []
if count in [0, 1]:
first = 1.0 if count == 0 else getCharToOrd(_fd)
second = 0.0 if count == 0 else getCharToOrd(_fd)
exp = first + float(second/256.0)
log(" count = %d / exp(%f)"%(count, exp))
else:
for _ in xrange(count):
first, second = getCharToOrd(_fd), getCharToOrd(_fd)
v = first + float(second/256.0)
tblLookUp.append(v)
log(" count = %d "%(count))
sigDescObj = Curve(sig, exp, tblLookUp)
return sigDescObj
def parseTagTable():
log("Enter", "[ICCProfileTagTable]", "add")
tagCount = getBytes4(self._fd)
log("Tag count = %d"%(tagCount))
for idx in xrange(tagCount):
tagStartPos = nowAt(self._fd)
sig = ''.join(getChar(self._fd) for _ in xrange(4))
offset = getBytes4(self._fd)
size = getBytes4(self._fd)
seekTo(self._fd, basePos+offset)
log("Tag sig(%s) / offset(%d) / size(%d) / basePos(%d) / tagSigPos(%d) / tagTypePos(%d) "%(sig, offset, size, basePos, tagStartPos, basePos+offset))
typeDesc = ''.join(getChar(self._fd) for _ in xrange(4))
log("Type Desc(%s)"%(typeDesc))
sigDescObj = GetSigObject(sig, typeDesc, self._fd, size, basePos+offset)
assert sig not in self.__dicSig2TagInfo, "Check this file, two same sig !"
self.__dicSig2TagInfo[sig] = sigDescObj
seekTo(self._fd, tagStartPos+12)
log("Leave", "[ICCProfileTagTable]", "remove")
pprint.pprint(self.__dicSig2TagInfo)
pass
def __parseAPP1(self, base, start, end):
if not self._file:
assert False
seekTo(self._file, base)
self._orderAPP1 = getBytes2(self._file)
log("order = %s" % (hex(self._orderAPP1)))
if self._orderAPP1 not in [BYTE_ALIGN_MOTOROLA, BYTE_ALIGN_INTEL]:
log("order incorrect")
assert False
check = getBytes2(self._file, self._orderAPP1)
if check != 0x002a:
assert False
offsetToNextIFD = getBytes4(self._file, self._orderAPP1)
log("offsetToNextIFD = %s" % (hex(offsetToNextIFD)))
while offsetToNextIFD:
seekTo(self._file, base + offsetToNextIFD)
self.__parseBasicIFD(base, start, end)
offsetToNextIFD = getBytes4(self._file, self._orderAPP1)
log("offsetToNextIFD = %s" % (hex(offsetToNextIFD)))
def __parseAPP1(self, base, start, end):
if not self._file:
assert False
seekTo(self._file, base)
self._orderAPP1 = getBytes2(self._file)
log("order = %s"%(hex(self._orderAPP1)))
if self._orderAPP1 not in [BYTE_ALIGN_MOTOROLA, BYTE_ALIGN_INTEL]:
log("order incorrect")
assert False
check = getBytes2(self._file, self._orderAPP1)
if check != 0x002a:
assert False
offsetToNextIFD = getBytes4(self._file, self._orderAPP1)
log("offsetToNextIFD = %s"%(hex(offsetToNextIFD)))
while offsetToNextIFD:
seekTo(self._file, base+offsetToNextIFD)
self.__parseBasicIFD(base, start, end)
offsetToNextIFD = getBytes4(self._file, self._orderAPP1)
log("offsetToNextIFD = %s"%(hex(offsetToNextIFD)))
def GetMlucHelper(_fd, sig, tagStartPos):
reserved = getBytes4(_fd)
assert reserved == 0
numOfRecords = getBytes4(_fd)
recordSize = getBytes4(_fd)
log(" numOfRecords = %d / recordSize = %s"%(numOfRecords, recordSize))
sigDescObj = MultiLocalizedUnicode(sig)
for _ in xrange(numOfRecords):
langCode = ''.join(getChar(_fd) for i in xrange(2))
langCountryCode = ''.join(getChar(_fd) for i in xrange(2))
lenRecordString = getBytes4(_fd)
offsetRecordString = getBytes4(_fd)
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offsetRecordString)
uniBytes = getChar(_fd, lenRecordString)
# TODO : Think a better way to store these special unicode glyph
uniChar = unicode(uniBytes, errors='replace')
log(" uniChar = %s"%(uniChar))
sigDescObj.add(langCode, langCountryCode, uniChar)
seekTo(_fd, here)
return sigDescObj
def GetMultiFunctionTableHelper(_fd, sig, tagStartPos):
reserved = getBytes4(_fd)
assert reserved == 0
numOfInputChannel = getCharToOrd(_fd)
numOfOutputChannel = getCharToOrd(_fd)
numOfCLUTGridPoints = getCharToOrd(_fd)
padding = getCharToOrd(_fd)
assert padding == 0
encodedParas = []
for _ in xrange(9):
encodedParas.append(GetS15Fixed16Number(_fd))
numOfInputTableEntries = getBytes2(_fd)
numOfOutputTableEntries = getBytes2(_fd)
log(" InChannels(%d) / OutChannels(%d) / GridPts(%d) / EncodedPars(%s)"\
%(numOfInputChannel, numOfOutputChannel, numOfCLUTGridPoints,\
str(encodedParas)))
log(" InTableEntries(%d) / OutTableEntries(%d)"\
%(numOfInputTableEntries, numOfOutputTableEntries))
inputTables = []
for _ in xrange(numOfInputChannel):
tmp = []
for __ in xrange(numOfInputTableEntries):
tmp.append(getBytes2(_fd))
inputTables.append(tmp)
clut = []
for _ in xrange(numOfCLUTGridPoints ** numOfInputChannel):
tmp = []
for __ in xrange(numOfOutputChannel):
tmp.append(getBytes2(_fd))
clut.append(tmp)
outputTables = []
for _ in xrange(numOfOutputChannel):
tmp = []
for __ in xrange(numOfOutputTableEntries):
tmp.append(getBytes2(_fd))
outputTables.append(tmp)
return Lut16(sig, encodedParas, inputTables, clut, outputTables)
def GetParaCurveHelper(_fd, sig):
reserved = getBytes4(_fd)
assert reserved == 0
funcType = getBytes2(_fd)
reserved2 = getBytes2(_fd)
assert reserved2 == 0
para_g = para_a = para_b = para_c = para_d = para_e = para_f = None
if funcType == 0:
para_g = GetS15Fixed16Number(_fd)
elif funcType == 1:
para_g = GetS15Fixed16Number(_fd)
para_a = GetS15Fixed16Number(_fd)
para_b = GetS15Fixed16Number(_fd)
elif funcType == 2:
para_g = GetS15Fixed16Number(_fd)
para_a = GetS15Fixed16Number(_fd)
para_b = GetS15Fixed16Number(_fd)
para_c = GetS15Fixed16Number(_fd)
elif funcType == 3:
para_g = GetS15Fixed16Number(_fd)
para_a = GetS15Fixed16Number(_fd)
para_b = GetS15Fixed16Number(_fd)
para_c = GetS15Fixed16Number(_fd)
para_d = GetS15Fixed16Number(_fd)
elif funcType == 4:
para_g = GetS15Fixed16Number(_fd)
para_a = GetS15Fixed16Number(_fd)
para_b = GetS15Fixed16Number(_fd)
para_c = GetS15Fixed16Number(_fd)
para_d = GetS15Fixed16Number(_fd)
para_e = GetS15Fixed16Number(_fd)
para_f = GetS15Fixed16Number(_fd)
sigDescObj = ParaCurve(sig, para_g, para_a, para_b, para_c, para_d,\
para_e, para_f)
log(" ParaCurve - g(%s), a(%s), b(%s), c(%s), d(%s), e(%s), f(%s)"%(\
str(para_g), str(para_a), str(para_b), str(para_c), str(para_d),\
str(para_e), str(para_f)))
return sigDescObj
def __parseBasicIFD(self, base, start, end):
log("Enter", "[BasicIFD]", "add")
if not self._file:
assert False
entries = getBytes2(self._file, self._orderAPP1)
log("Number of entries = %d" % (entries))
for idx in xrange(entries):
tag = getBytes2(self._file, self._orderAPP1)
dataFormat = getBytes2(self._file, self._orderAPP1)
numOfComps = getBytes4(self._file, self._orderAPP1)
posBeforeDataOffset = nowAt(self._file)
dataOffset = getBytes4(self._file, self._orderAPP1)
posAfterDataOffset = nowAt(self._file)
if 0 == dataFormat or dataFormat >= len(EXIF_TIFF_DATAFORMAT_LIST):
assert False, "dataformat incorrect = %d" % (dataFormat)
continue
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[dataFormat]
dataSize = bytesPerComp * numOfComps
if dataSize > 4:
targetOffset = base + dataOffset
if targetOffset <= start or targetOffset >= end:
continue
else:
seekTo(self._file, targetOffset)
else:
seekTo(self._file, posBeforeDataOffset)
entry = self.__getDataFromFormat(tag, dataFormat, dataSize)
if entry.getTag() == TAGID_ExifIFD:
ifdOffset = entry.getValue()
seekTo(self._file, base + ifdOffset)
self.__parseIFDs(base, start, end, "ExifIFD")
elif entry.getTag() == TAGID_SubIFDs:
log("SubIFDs")
elif entry.getTag() == TAGID_GPSIFD:
ifdOffset = entry.getValue()
seekTo(self._file, base + ifdOffset)
self.__parseIFDs(base, start, end, IFD="GPSIFD")
pass
elif entry.getTag() == TAGID_IPTC:
log("IPTC")
pass
elif entry.getTag() == TAGID_XMP:
log("XMP")
pass
elif entry.getTag() == TAGID_Photoshop:
log("Photoshop")
pass
elif entry.getTag() == TAGID_ICCProfile:
log("ICCProfile")
pass
elif entry.getTag() == TAGID_DNGPrivateData:
log("DNGPrivateData")
pass
seekTo(self._file, posAfterDataOffset)
log("Leave", "[BasicIFD]", "remove")
def __getDataFromFormat(self, tag, format, size):
from array import array
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[format]
entry = IFDEntry(tag, bytesPerComp)
#print 'format(%d)/Size(%d)'%(format, size)
lstValue = []
if format in [1, 6, 7]:
# unsigned byte / # signed byte / # undefined
data = array('b', getChar(self._file, size))
pass
elif format == 2:
# ascii string
data = array('c', getChar(self._file, size))
pass
elif format in [3, 8]:
# unsigned short / # signed short
while size > 0:
v = getBytes2(self._file, self._orderAPP1)
lstValue.append(v)
size -= 2
encode = 'H' if format == 3 else 'h'
data = array('H', lstValue)
pass
elif format in [4, 9]:
# unsigned long / # signed long
while size > 0:
v = getBytes4(self._file, self._orderAPP1)
lstValue.append(v)
size -= 4
encode = 'L' if format == 4 else 'l'
data = array('L', lstValue)
pass
elif format in [5, 10]:
# unsigned rational / # signed rational
while size > 0:
numerator = getBytes4(self._file, self._orderAPP1)
denominator = getBytes4(self._file, self._orderAPP1)
size -= 8
lstValue.append(float(numerator) / float(denominator))
data = array('d', lstValue)
pass
elif format == 11:
# signed float
while size > 0:
v = getBytes4(self._file, self._orderAPP1)
lstValue.append(v)
size -= 4
data = array('f', lstValue)
pass
elif format == 12:
# double float
while size > 0:
numerator = getBytes4(self._file, self._orderAPP1)
denominator = getBytes4(self._file, self._orderAPP1)
size -= 8
lstValue.append(float(numerator) / float(denominator))
data = array('d', lstValue)
pass
entry.setData(data)
log(" --- tag(%s), %s" % (getTagStringByValue(tag), str(data)))
return entry
def __parseBasicIFD(self, base, start, end):
log("Enter", "[BasicIFD]", "add")
if not self._file:
assert False
entries = getBytes2(self._file, self._orderAPP1)
log("Number of entries = %d"%(entries))
for idx in xrange(entries):
tag = getBytes2(self._file, self._orderAPP1)
dataFormat = getBytes2(self._file, self._orderAPP1)
numOfComps = getBytes4(self._file, self._orderAPP1)
posBeforeDataOffset = nowAt(self._file)
dataOffset = getBytes4(self._file, self._orderAPP1)
posAfterDataOffset = nowAt(self._file)
if 0 == dataFormat or dataFormat >= len(EXIF_TIFF_DATAFORMAT_LIST):
assert False, "dataformat incorrect = %d"%(dataFormat)
continue
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[dataFormat]
dataSize = bytesPerComp * numOfComps
if dataSize > 4:
targetOffset = base + dataOffset
if targetOffset <= start or targetOffset >= end:
continue
else:
seekTo(self._file, targetOffset)
else:
seekTo(self._file, posBeforeDataOffset)
entry = self.__getDataFromFormat(tag, dataFormat, dataSize)
if entry.getTag() == TAGID_ExifIFD:
ifdOffset = entry.getValue()
seekTo(self._file, base+ifdOffset)
self.__parseIFDs(base, start, end, "ExifIFD")
elif entry.getTag() == TAGID_SubIFDs:
log("SubIFDs")
elif entry.getTag() == TAGID_GPSIFD:
ifdOffset = entry.getValue()
seekTo(self._file, base+ifdOffset)
self.__parseIFDs(base, start, end, IFD="GPSIFD")
pass
elif entry.getTag() == TAGID_IPTC:
log("IPTC")
pass
elif entry.getTag() == TAGID_XMP:
log("XMP")
pass
elif entry.getTag() == TAGID_Photoshop:
log("Photoshop")
pass
elif entry.getTag() == TAGID_ICCProfile:
log("ICCProfile")
pass
elif entry.getTag() == TAGID_DNGPrivateData:
log("DNGPrivateData")
pass
seekTo(self._file, posAfterDataOffset)
log("Leave", "[BasicIFD]", "remove")
def __getDataFromFormat(self, tag, format, size):
from array import array
bytesPerComp = EXIF_TIFF_DATAFORMAT_LIST[format]
entry = IFDEntry(tag, bytesPerComp)
#print 'format(%d)/Size(%d)'%(format, size)
lstValue = []
if format in [1, 6, 7]:
# unsigned byte / # signed byte / # undefined
data = array('b', getChar(self._file, size))
pass
elif format == 2:
# ascii string
data = array('c', getChar(self._file, size))
pass
elif format in [3, 8]:
# unsigned short / # signed short
while size > 0:
v = getBytes2(self._file, self._orderAPP1)
lstValue.append(v)
size -= 2
encode = 'H' if format == 3 else 'h'
data = array('H', lstValue)
pass
elif format in [4, 9]:
# unsigned long / # signed long
while size > 0:
v = getBytes4(self._file, self._orderAPP1)
lstValue.append(v)
size -= 4
encode = 'L' if format == 4 else 'l'
data = array('L', lstValue)
pass
elif format in [5, 10]:
# unsigned rational / # signed rational
while size > 0:
numerator = getBytes4(self._file, self._orderAPP1)
denominator = getBytes4(self._file, self._orderAPP1)
size -= 8
lstValue.append(float(numerator) / float(denominator))
data = array('d', lstValue)
pass
elif format == 11:
# signed float
while size > 0:
v = getBytes4(self._file, self._orderAPP1)
lstValue.append(v)
size -= 4
data = array('f', lstValue)
pass
elif format == 12:
# double float
while size > 0:
numerator = getBytes4(self._file, self._orderAPP1)
denominator = getBytes4(self._file, self._orderAPP1)
size -= 8
lstValue.append(float(numerator) / float(denominator))
data = array('d', lstValue)
pass
entry.setData(data)
log(" --- tag(%s), %s"%(getTagStringByValue(tag), str(data)))
return entry
def parseHeader():
log("Enter", "[ICCProfileHeader]", "add")
profileSize = getBytes4(self._fd)
cmmType = ''.join(getChar(self._fd) for _ in xrange(4))
lstVer = [str(getCharToOrd(self._fd)) for _ in xrange(4)]
self.__dicHeaderInfo[H_CMM_TYPE] = cmmType
self.__dicHeaderInfo[H_VERSION] = lstVer[0] + "." + lstVer[1]
deviceClass = ''.join(getChar(self._fd) for _ in xrange(4))
colorSpaceOfData = ''.join(getChar(self._fd) for _ in xrange(4))
pcs = ''.join(getChar(self._fd) for _ in xrange(4))
self.__dicHeaderInfo[H_DEVICE_CLASS] = dicDevCls2Name.get(deviceClass, "Not found")
self.__dicHeaderInfo[H_COLOR_SPACE] = colorSpaceOfData.strip()
self.__dicHeaderInfo[H_PROFILE_CONNECTION_SPACE] = pcs.strip()
lstDatetime = [getBytes2(self._fd) for _ in xrange(6)]
signature = ''.join(getChar(self._fd) for _ in xrange(4))
assert signature == "acsp", "Not a standard ICC Profile !!"
primaryPlatform = ''.join(getChar(self._fd) for _ in xrange(4))
def getBitsList(numBytes):
lstBits = []
for _ in xrange(numBytes):
bits_short = bin(getCharToOrd(self._fd))[2:]
bits_full = '00000000'[len(bits_short):] + bits_short
lstBits.extend([int(b) for b in bits_full])
return lstBits
lstProfileFlags = getBitsList(4)
self.__dicHeaderInfo[H_CREATE_DATETIME] = "Datatime = %d/%d/%d-%d:%d:%d"%tuple(lstDatetime)
self.__dicHeaderInfo[H_SIGNATURE] = signature
self.__dicHeaderInfo[H_PLATFORM] = dicPlatformSig2Desc.get(primaryPlatform, "Not found")
self.__dicHeaderInfo[H_IS_EMBEDED] = True if lstProfileFlags[0] == 1 else False
self.__dicHeaderInfo[H_USED_INDENDENTLY] = False if lstProfileFlags[1] == 1 else True
deviceManufacturer = ''.join(getChar(self._fd) for _ in xrange(4))
deviceModel = ''.join(getChar(self._fd) for _ in xrange(4))
lstDeviceAttributes = getBitsList(8)
renderingIntent, zeroPadding = getBytes2(self._fd), getBytes2(self._fd)
self.__dicHeaderInfo[H_DEVICE_MANUFACTURER] = deviceManufacturer
self.__dicHeaderInfo[H_DEVICE_MODEL] = deviceModel
self.__dicHeaderInfo[H_ATTR_T_R] = "Transparency" if lstDeviceAttributes[0] == 1 else "Reflective"
self.__dicHeaderInfo[H_ATTR_M_G] = "Matte" if lstDeviceAttributes[1] == 1 else "Glossy"
self.__dicHeaderInfo[H_RENDERING_INTENT] = dicRenderingIntent2Desc.get(renderingIntent, "Not found")
intX, intY, intZ = getBytes4(self._fd), getBytes4(self._fd), getBytes4(self._fd)
X = struct.unpack('f', struct.pack('i', intX))
Y = struct.unpack('f', struct.pack('i', intY))
Z = struct.unpack('f', struct.pack('i', intZ))
CIEXYZ_X = X[0] / Y[0]
CIEXYZ_Y = Y[0] / Y[0]
CIEXYZ_Z = Z[0] / Y[0]
profileCreator = ''.join(getChar(self._fd) for _ in xrange(4))
profileID = [hex(getCharToOrd(self._fd)) for _ in xrange(16)]
reserved = [hex(getCharToOrd(self._fd)) for _ in xrange(28)]
self.__dicHeaderInfo[H_PROFILE_CREATOR] = profileCreator
self.__dicHeaderInfo[H_PROFILE_D50_XYZ] = "(%f, %f, %f)"%(CIEXYZ_X, CIEXYZ_Y, CIEXYZ_Z)
log("Header Information : \n%s "%(pprint.pformat(self.__dicHeaderInfo, indent=2)))
log("Leave", "[ICCProfileHeader]", "remove")
def GetSigObject(sig, type, _fd, size, tagStartPos=None):
# _fd is already seeked to starting point of data
# 4bytes type(description) is included in size
sigDescObj = None
if sig == "A2B0":
if type == "mAB ":
sigDescObj = GetAToBHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
pass
elif sig == "A2B1":
if type == "mAB ":
sigDescObj = GetAToBHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
pass
elif sig == "A2B2":
if type == "mAB ":
sigDescObj = GetAToBHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
pass
elif sig in ["bXYZ", "gXYZ", "rXYZ", "bkpt", "wtpt", "lumi"]:
reserved = getBytes4(_fd)
assert reserved == 0
assert size == 20
X, Y, Z = GetXYZHelper(_fd)
log(" XYZ = (%f, %f, %f)"%(X, Y, Z))
sigDescObj = XYZ(sig, X, Y, Z)
elif sig == "B2A0":
if type == "mBA ":
sigDescObj = GetBToAHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
elif sig == "B2A1":
if type == "mBA ":
sigDescObj = GetBToAHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
elif sig == "B2A2":
if type == "mBA ":
sigDescObj = GetBToAHelper(_fd, sig, tagStartPos)
elif type == "mft2":
sigDescObj = GetMultiFunctionTableHelper(_fd, sig, tagStartPos)
elif sig == "calt":
pass
elif sig == "ciis":
content = ''.join(getChar(_fd) for _ in xrange(size-4)).strip('\0x00')
log(" ciis content = %s "%(dicColorimetricIntentImageState2Desc.get(content, "Unknown")))
sigDescObj = Signature(sig, content)
elif sig == "targ":
pass
elif sig == "cprt":
if type == "mluc":
sigDescObj = GetMlucHelper(_fd, sig, tagStartPos)
else:
content = ''.join(getChar(_fd) for _ in xrange(size-4))
log(" cpry content = %s"%(content))
sigDescObj = Text(sig, content)
pass
elif sig == "chad":
reserved = getBytes4(_fd)
assert reserved == 0
assert size == 44
mat = []
for _ in xrange(9):
intUnsigned = getBytes2(_fd)
intSigned = intUnsigned - 65536 if intUnsigned >= 32768 else intUnsigned
fracPart = getBytes2(_fd)
v = intSigned + float(fracPart) / 65536
mat.append(v)
log(" chad = %s"%(str(mat)))
sigDescObj = S15Fixed16Array(sig, mat)
pass
elif sig == "gamt":
pass
elif sig == "kTRC":
pass
elif sig == "meas":
reserved = getBytes4(_fd)
assert reserved == 0
assert size == 36
obs = dicStdObserver2Desc.get(hex(getBytes4(_fd)), dicStdObserver2Desc[hex(0)])
tristimulusXYZ = GetXYZHelper(_fd)
geo = dicGeometry2Desc.get(hex(getBytes4(_fd)), dicGeometry2Desc[hex(0)])
flareInt, flareFractional = getBytes2(_fd), getBytes2(_fd)
flare = flareInt + float(flareFractional) / 65536
illuminantType = dicIlluminantType2Desc.get(hex(getBytes4(_fd)), dicIlluminantType2Desc[hex(0)])
log(" obs(%s) / triXYZ(%s) / geo(%s) / flare(%f) / illu(%s)"%(obs, str(tristimulusXYZ),\
geo, flare, illuminantType))
sigDescObj = Measurement(sig, obs, tristimulusXYZ, geo, flare, illuminantType)
elif sig == "ncol":
pass
elif sig == "ncl2":
pass
elif sig == "pre0":
pass
elif sig == "pre1":
pass
elif sig == "pre2":
pass
elif sig in ["dscm"]:
if type == "mluc":
sigDescObj = GetMlucHelper(_fd, sig, tagStartPos)
elif sig in ["desc", "dmdd", "dmnd", "scrd", "vued"]:
if type == "mluc":
sigDescObj = GetMlucHelper(_fd, sig, tagStartPos)
else:
reserved = getBytes4(_fd)
assert reserved == 0
asciiCount = getBytes4(_fd)
log(" asciiCount = %d"%(asciiCount))
asciiInvariantDesc = getChar(_fd, asciiCount)
log(" asciiInvariantDesc = %s"%(asciiInvariantDesc))
uniLangCode = getBytes4(_fd)
uniCount = getBytes4(_fd)
log(" uniLangCode, uniCount = %d, %d"%(uniLangCode, uniCount))
uniLocalizableDesc = None
if uniCount != 0:
uniLocalizableDesc = u""
for _ in xrange(uniCount):
uniLocalizableDesc.join(getBytes2(_fd).decode("utf-8", "ignore"))
log(" uniLocalizableDesc = %s"%(uniLocalizableDesc))
scriptCode = getBytes2(_fd)
scriptCount = getCharToOrd(_fd)
log(" scriptCode, scriptCount = %d, %d"%(scriptCode, scriptCount))
localMacintoshDesc = None
if scriptCount != 0:
localMacintoshDesc = getChar(_fd, min(67,scriptCount))
log(" localMacintoshDesc = %s"%(localMacintoshDesc))
sigDescObj = TextDescription(sig, asciiInvariantDesc,\
uniLocalizableDesc, localMacintoshDesc)
pass
elif sig == "pseq":
pass
elif sig == "psd0":
pass
elif sig == "psd1":
pass
elif sig == "psd2":
pass
elif sig == "psd3":
pass
elif sig == "ps2s":
pass
elif sig == "ps2i":
pass
elif sig == "rig0":
content = ''.join(getChar(_fd) for _ in xrange(size-4)).strip('\0x00')
log(" rig0 content = %s "%(content))
sigDescObj = Signature(sig, content)
elif sig in ["rTRC", "gTRC", "bTRC"]:
sigDescObj = GetCurveHelper(_fd, sig)
elif sig == "scrn":
pass
elif sig == "tech":
content = ''.join(getChar(_fd) for _ in xrange(size-4)).strip('\0x00')
log(" tech content = %s "%(dicTechType2Desc.get(content, 'None')))
sigDescObj = Signature(sig, content)
pass
elif sig == "bfd ":
pass
elif sig == "vued":
pass
elif sig == "view":
reserved = getBytes4(_fd)
assert reserved == 0
illuminantXYZ = GetXYZHelper(_fd)
surroundXYZ = GetXYZHelper(_fd)
log(" illXYZ = (%f, %f, %f)"%(illuminantXYZ))
log(" surXYZ = (%f, %f, %f)"%(surroundXYZ))
illuminantType = dicIlluminantType2Desc.get(hex(getBytes4(_fd)), dicIlluminantType2Desc[hex(0)])
sigDescObj = ViewingConditions(sig, illuminantXYZ, surroundXYZ, illuminantType)
log(" illuminantType = %s"%illuminantType)
return sigDescObj
def GetAToBHelper(_fd, sig, tagStartPos, reverse=False):
reserved = getBytes4(_fd)
assert reserved == 0
numOfInputChannel = getCharToOrd(_fd)
numOfOutputChannel = getCharToOrd(_fd)
padding = getBytes2(_fd)
log(" Input(%d) , Output(%d), padding(%d)"%(numOfInputChannel, numOfOutputChannel, padding))
assert padding == 0
sigDescObj = None
lstBCurve = []
mMat = None
lstMCurve = []
clut = []
lstACurve = []
offset2BCurve = getBytes4(_fd)
if offset2BCurve != 0:
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offset2BCurve)
for _ in xrange(numOfOutputChannel):
subType = getChar(_fd, 4)
log(" B Curve subtype = %s"%(subType))
if subType == "para":
sigSubDescObj = GetParaCurveHelper(_fd, sig)
lstBCurve.append(sigSubDescObj)
elif subType == "curv":
sigSubDescObj = GetCurveHelper(_fd, sig)
lstBCurve.append(sigSubDescObj)
seekTo(_fd, here)
assert len(lstBCurve) == numOfOutputChannel
offset2Matrix = getBytes4(_fd)
if offset2Matrix != 0:
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offset2Matrix)
mat = []
for _ in xrange(12):
intUnsigned = getBytes2(_fd)
intSigned = intUnsigned - 65536 if intUnsigned >= 32768 else intUnsigned
fracPart = getBytes2(_fd)
v = intSigned + float(fracPart) / 65536
mat.append(v)
log(" Matrix = %s"%(str(mat)))
mMat = S15Fixed16Array(sig, mat)
seekTo(_fd, here)
offset2MCurve = getBytes4(_fd)
if offset2MCurve != 0:
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offset2MCurve)
for _ in xrange(numOfOutputChannel):
subType = getChar(_fd, 4)
log(" M Curve subtype = %s"%(subType))
if subType == "para":
sigSubDescObj = GetParaCurveHelper(_fd, sig)
lstMCurve.append(sigSubDescObj)
elif subType == "curv":
sigSubDescObj = GetCurveHelper(_fd, sig)
lstMCurve.append(sigSubDescObj)
seekTo(_fd, here)
assert len(lstMCurve) == numOfOutputChannel
offset2CLUT = getBytes4(_fd)
if offset2CLUT != 0:
# TODO : Check the implementation correctness
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offset2CLUT)
lstGridPoints = []
for _ in xrange(16):
gridPts = getCharToOrd(_fd)
if _ >= numOfInputChannel:
assert gridPts == 0
lstGridPoints.append(gridPts)
precision = getCharToOrd(_fd)
padding = getBytes3(_fd)
log(" >>> lstGridPoints : %s"%(str(lstGridPoints)))
log(" >>> precision : %s / padding %s "%(str(precision), str(padding)))
assert padding == 0
getDataPoint = getBytes2 if precision == 2 else getCharToOrd
def fn(x, y):
return x * y if y != 0 else x
totalCLUTPts = reduce(fn, lstGridPoints)
for _ in xrange(totalCLUTPts):
tmp = []
for __ in xrange(numOfOutputChannel):
tmp.append(getDataPoint(_fd))
clut.append(tmp)
seekTo(_fd, here)
offset2ACurve = getBytes4(_fd)
if offset2ACurve != 0:
here = nowAt(_fd)
seekTo(_fd, tagStartPos + offset2ACurve)
for _ in xrange(numOfOutputChannel):
subType = getChar(_fd, 4)
log(" A Curve subtype = %s"%(subType))
if subType == "para":
sigSubDescObj = GetParaCurveHelper(_fd, sig)
lstACurve.append(sigSubDescObj)
elif subType == "curv":
sigSubDescObj = GetCurveHelper(_fd, sig)
lstACurve.append(sigSubDescObj)
seekTo(_fd, here)
assert len(lstACurve) == numOfOutputChannel
log(" O2B(%d) / O2mat(%d) / O2M(%d) / O2CLUT(%d) / O2A(%d)"%(offset2BCurve,\
offset2Matrix, offset2MCurve, offset2CLUT, offset2ACurve))
if reverse:
sigDescObj = LutBToA(sig, lstBCurve, mMat, lstMCurve, clut, lstACurve)
else:
sigDescObj = LutAToB(sig, lstBCurve, mMat, lstMCurve, clut, lstACurve)
return sigDescObj
