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980e05cc99
Backported 400 revisions from rev 1de4961-8897c5b (2018-2014).
Move core/benchmark, core/cmd_line, core/memory, core/profiler and core/timeout to core/optional/*
Remove metadata/qt*
PORT: Version 2.0a3 (inline with 3.0a3 @ f80c7d5).
Basic Support for XMP Packets.
tga: improvements to adhere more closely to the spec.
pdf: slightly improved parsing.
rar: fix TypeError on unknown block types.
Add MacRoman win32 codepage.
tiff/exif: support SubIFDs and tiled images.
Add method to export metadata in dictionary.
mpeg_video: don't attempt to parse Stream past length.
mpeg_video: parse ESCR correctly, add SCR value.
Change centralise CustomFragments.
field: don't set parser class if class is None, to enable autodetect.
field: add value/display for CustomFragment.
parser: inline warning to enable tracebacks in debug mode.
Fix empty bytestrings in makePrintable.
Fix contentSize in jpeg.py to account for image_data blocks.
Fix the ELF parser.
Enhance the AR archive parser.
elf parser: fix wrong wrong fields order in parsing little endian section flags.
elf parser: add s390 as a machine type.
Flesh out mp4 parser.
PORT: Version 2.0a1 (inline with 3.0a1).
Major refactoring and PEP8.
Fix ResourceWarning warnings on files. Add a close() method and support for the context manager protocol ("with obj: ...") to parsers, input and output streams.
metadata: get comment from ZIP.
Support for InputIOStream.read(0).
Fix sizeGe when size is None.
Remove unused new_seekable_field_set file.
Remove parser Mapsforge .map.
Remove parser Parallel Realities Starfighter .pak files.
sevenzip: fix for newer archives.
java: update access flags and modifiers for Java 1.7 and update description text for most recent Java.
Support ustar prefix field in tar archives.
Remove file_system* parsers.
Remove misc parsers 3d0, 3ds, gnome_keyring, msoffice*, mstask, ole*, word*.
Remove program parsers macho, nds, prc.
Support non-8bit Character subclasses.
Python parser supports Python 3.7.
Enhance mpeg_ts parser to support MTS/M2TS.
Support for creation date in tiff.
Change don't hardcode errno constant.
PORT: 1.9.1
Internal Only: The following are legacy reference to upstream commit messages.
Relevant changes up to b0a115f8.
Use integer division.
Replace HACHOIR_ERRORS with Exception.
Fix metadata.Data: make it sortable.
Import fixes from e7de492.
PORT: Version 2.0a1 (inline with 3.0a1 @ e9f8fad).
Replace hachoir.core.field with hachoir.field
Replace hachoir.core.stream with hachoir.stream
Remove the compatibility module for PY1.5 to PY2.5.
metadata: support TIFF picture.
metadata: fix string normalization.
metadata: fix datetime regex Fix hachoir bug #57.
FileFromInputStream: fix comparison between None and an int.
InputIOStream: open the file in binary mode.
83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
"""
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TIFF image parser.
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Authors: Victor Stinner, Sebastien Ponce, Robert Xiao
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Creation date: 30 september 2006
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"""
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from hachoir.parser import Parser
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from hachoir.field import SeekableFieldSet, RootSeekableFieldSet, Bytes
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from hachoir.core.endian import LITTLE_ENDIAN, BIG_ENDIAN
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from hachoir.parser.image.exif import TIFF, IFD
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def getStrips(ifd):
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data = {}
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for i, entry in enumerate(ifd.array('entry')):
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data[entry['tag'].display] = entry
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# image data
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if "StripOffsets" in data and "StripByteCounts" in data:
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offs = ifd.getEntryValues(data["StripOffsets"])
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bytes = ifd.getEntryValues(data["StripByteCounts"])
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for off, byte in zip(offs, bytes):
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yield off.value, byte.value
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# image data
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if "TileOffsets" in data and "TileByteCounts" in data:
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offs = ifd.getEntryValues(data["TileOffsets"])
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bytes = ifd.getEntryValues(data["TileByteCounts"])
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for off, byte in zip(offs, bytes):
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yield off.value, byte.value
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class ImageFile(SeekableFieldSet):
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def __init__(self, parent, name, description, ifd):
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SeekableFieldSet.__init__(self, parent, name, description, None)
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self._ifd = ifd
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def createFields(self):
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for off, byte in getStrips(self._ifd):
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self.seekByte(off, relative=False)
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field = Bytes(self, "strip[]", byte)
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yield field
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class TiffFile(RootSeekableFieldSet, Parser):
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PARSER_TAGS = {
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"id": "tiff",
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"category": "image",
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"file_ext": ("tif", "tiff"),
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"mime": (u"image/tiff",),
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"min_size": 8 * 8,
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"magic": (("II\x2A\0", 0), ("MM\0\x2A", 0)),
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"description": "TIFF picture"
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}
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# Correct endian is set in constructor
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endian = LITTLE_ENDIAN
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def __init__(self, stream, **args):
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RootSeekableFieldSet.__init__(self, None, "root", stream, None, stream.askSize(self))
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if self.stream.readBytes(0, 2) == "MM":
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self.endian = BIG_ENDIAN
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Parser.__init__(self, stream, **args)
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def validate(self):
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endian = self.stream.readBytes(0, 2)
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if endian not in ("MM", "II"):
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return "Invalid endian (%r)" % endian
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if self["version"].value != 42:
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return "Unknown TIFF version"
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return True
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def createFields(self):
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for field in TIFF(self):
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yield field
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for ifd in self:
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if not isinstance(ifd, IFD):
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continue
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offs = (off for off, byte in getStrips(ifd))
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self.seekByte(min(offs), relative=False)
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image = ImageFile(self, "image[]", "Image File", ifd)
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yield image
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