mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-27 05:03:37 +00:00
353 lines
10 KiB
Python
353 lines
10 KiB
Python
"""
|
|
Gimp image parser (XCF file, ".xcf" extension).
|
|
|
|
You can find informations about XCF file in Gimp source code. URL to read
|
|
CVS online:
|
|
http://cvs.gnome.org/viewcvs/gimp/app/xcf/
|
|
files xcf-read.c and xcf-load.c
|
|
|
|
Author: Victor Stinner
|
|
"""
|
|
|
|
from hachoir.parser import Parser
|
|
from hachoir.field import (StaticFieldSet, FieldSet, ParserError,
|
|
UInt8, UInt32, Enum, Float32, String, PascalString32, RawBytes)
|
|
from hachoir.parser.image.common import RGBA
|
|
from hachoir.core.endian import NETWORK_ENDIAN
|
|
|
|
|
|
class XcfCompression(FieldSet):
|
|
static_size = 8
|
|
COMPRESSION_NAME = {
|
|
0: "None",
|
|
1: "RLE",
|
|
2: "Zlib",
|
|
3: "Fractal"
|
|
}
|
|
|
|
def createFields(self):
|
|
yield Enum(UInt8(self, "compression", "Compression method"), self.COMPRESSION_NAME)
|
|
|
|
|
|
class XcfResolution(StaticFieldSet):
|
|
format = (
|
|
(Float32, "xres", "X resolution in DPI"),
|
|
(Float32, "yres", "Y resolution in DPI")
|
|
)
|
|
|
|
|
|
class XcfTattoo(StaticFieldSet):
|
|
format = ((UInt32, "tattoo", "Tattoo"),)
|
|
|
|
|
|
class LayerOffsets(StaticFieldSet):
|
|
format = (
|
|
(UInt32, "ofst_x", "Offset X"),
|
|
(UInt32, "ofst_y", "Offset Y")
|
|
)
|
|
|
|
|
|
class LayerMode(FieldSet):
|
|
static_size = 32
|
|
MODE_NAME = {
|
|
0: "Normal",
|
|
1: "Dissolve",
|
|
2: "Behind",
|
|
3: "Multiply",
|
|
4: "Screen",
|
|
5: "Overlay",
|
|
6: "Difference",
|
|
7: "Addition",
|
|
8: "Subtract",
|
|
9: "Darken only",
|
|
10: "Lighten only",
|
|
11: "Hue",
|
|
12: "Saturation",
|
|
13: "Color",
|
|
14: "Value",
|
|
15: "Divide",
|
|
16: "Dodge",
|
|
17: "Burn",
|
|
18: "Hard light",
|
|
19: "Soft light",
|
|
20: "Grain extract",
|
|
21: "Grain merge",
|
|
22: "Color erase"
|
|
}
|
|
|
|
def createFields(self):
|
|
yield Enum(UInt32(self, "mode", "Layer mode"), self.MODE_NAME)
|
|
|
|
|
|
class GimpBoolean(UInt32):
|
|
|
|
def __init__(self, parent, name):
|
|
UInt32.__init__(self, parent, name)
|
|
|
|
def createValue(self):
|
|
return 1 == UInt32.createValue(self)
|
|
|
|
|
|
class XcfUnit(StaticFieldSet):
|
|
format = ((UInt32, "unit", "Unit"),)
|
|
|
|
|
|
class XcfParasiteEntry(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield PascalString32(self, "name", "Name", strip="\0", charset="UTF-8")
|
|
yield UInt32(self, "flags", "Flags")
|
|
yield PascalString32(self, "data", "Data", strip=" \0", charset="UTF-8")
|
|
|
|
|
|
class XcfLevel(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "width", "Width in pixel")
|
|
yield UInt32(self, "height", "Height in pixel")
|
|
yield UInt32(self, "offset", "Offset")
|
|
offset = self["offset"].value
|
|
if offset == 0:
|
|
return
|
|
data_offsets = []
|
|
while (self.absolute_address + self.current_size) // 8 < offset:
|
|
chunk = UInt32(self, "data_offset[]", "Data offset")
|
|
yield chunk
|
|
if chunk.value == 0:
|
|
break
|
|
data_offsets.append(chunk)
|
|
if (self.absolute_address + self.current_size) // 8 != offset:
|
|
raise ParserError("Problem with level offset.")
|
|
previous = offset
|
|
for chunk in data_offsets:
|
|
data_offset = chunk.value
|
|
size = data_offset - previous
|
|
yield RawBytes(self, "data[]", size, "Data content of %s" % chunk.name)
|
|
previous = data_offset
|
|
|
|
|
|
class XcfHierarchy(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "width", "Width")
|
|
yield UInt32(self, "height", "Height")
|
|
yield UInt32(self, "bpp", "Bits/pixel")
|
|
|
|
offsets = []
|
|
while True:
|
|
chunk = UInt32(self, "offset[]", "Level offset")
|
|
yield chunk
|
|
if chunk.value == 0:
|
|
break
|
|
offsets.append(chunk.value)
|
|
for offset in offsets:
|
|
padding = self.seekByte(offset, relative=False)
|
|
if padding is not None:
|
|
yield padding
|
|
yield XcfLevel(self, "level[]", "Level")
|
|
# yield XcfChannel(self, "channel[]", "Channel"))
|
|
|
|
|
|
class XcfChannel(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "width", "Channel width")
|
|
yield UInt32(self, "height", "Channel height")
|
|
yield PascalString32(self, "name", "Channel name", strip="\0", charset="UTF-8")
|
|
yield from readProperties(self)
|
|
yield UInt32(self, "hierarchy_ofs", "Hierarchy offset")
|
|
yield XcfHierarchy(self, "hierarchy", "Hierarchy")
|
|
|
|
def createDescription(self):
|
|
return 'Channel "%s"' % self["name"].value
|
|
|
|
|
|
class XcfLayer(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "width", "Layer width in pixels")
|
|
yield UInt32(self, "height", "Layer height in pixels")
|
|
yield Enum(UInt32(self, "type", "Layer type"), XcfFile.IMAGE_TYPE_NAME)
|
|
yield PascalString32(self, "name", "Layer name", strip="\0", charset="UTF-8")
|
|
for prop in readProperties(self):
|
|
yield prop
|
|
|
|
# --
|
|
# TODO: Hack for Gimp 1.2 files
|
|
# --
|
|
|
|
yield UInt32(self, "hierarchy_ofs", "Hierarchy offset")
|
|
yield UInt32(self, "mask_ofs", "Layer mask offset")
|
|
padding = self.seekByte(self["hierarchy_ofs"].value, relative=False)
|
|
if padding is not None:
|
|
yield padding
|
|
yield XcfHierarchy(self, "hierarchy", "Hierarchy")
|
|
# TODO: Read layer mask if needed: self["mask_ofs"].value != 0
|
|
|
|
def createDescription(self):
|
|
return 'Layer "%s"' % self["name"].value
|
|
|
|
|
|
class XcfParasites(FieldSet):
|
|
|
|
def createFields(self):
|
|
size = self["../size"].value * 8
|
|
while self.current_size < size:
|
|
yield XcfParasiteEntry(self, "parasite[]", "Parasite")
|
|
|
|
|
|
class XcfProperty(FieldSet):
|
|
PROP_COMPRESSION = 17
|
|
PROP_RESOLUTION = 19
|
|
PROP_PARASITES = 21
|
|
TYPE_NAME = {
|
|
0: "End",
|
|
1: "Colormap",
|
|
2: "Active layer",
|
|
3: "Active channel",
|
|
4: "Selection",
|
|
5: "Floating selection",
|
|
6: "Opacity",
|
|
7: "Mode",
|
|
8: "Visible",
|
|
9: "Linked",
|
|
10: "Lock alpha",
|
|
11: "Apply mask",
|
|
12: "Edit mask",
|
|
13: "Show mask",
|
|
14: "Show masked",
|
|
15: "Offsets",
|
|
16: "Color",
|
|
17: "Compression",
|
|
18: "Guides",
|
|
19: "Resolution",
|
|
20: "Tattoo",
|
|
21: "Parasites",
|
|
22: "Unit",
|
|
23: "Paths",
|
|
24: "User unit",
|
|
25: "Vectors",
|
|
26: "Text layer flags",
|
|
}
|
|
|
|
handler = {
|
|
6: RGBA,
|
|
7: LayerMode,
|
|
8: GimpBoolean,
|
|
9: GimpBoolean,
|
|
10: GimpBoolean,
|
|
11: GimpBoolean,
|
|
12: GimpBoolean,
|
|
13: GimpBoolean,
|
|
15: LayerOffsets,
|
|
17: XcfCompression,
|
|
19: XcfResolution,
|
|
20: XcfTattoo,
|
|
21: XcfParasites,
|
|
22: XcfUnit
|
|
}
|
|
|
|
def __init__(self, *args, **kw):
|
|
FieldSet.__init__(self, *args, **kw)
|
|
self._size = (8 + self["size"].value) * 8
|
|
|
|
def createFields(self):
|
|
yield Enum(UInt32(self, "type", "Property type"), self.TYPE_NAME)
|
|
yield UInt32(self, "size", "Property size")
|
|
|
|
size = self["size"].value
|
|
if 0 < size:
|
|
cls = self.handler.get(self["type"].value, None)
|
|
if cls:
|
|
yield cls(self, "data", size=size * 8)
|
|
else:
|
|
yield RawBytes(self, "data", size, "Data")
|
|
|
|
def createDescription(self):
|
|
return "Property: %s" % self["type"].display
|
|
|
|
|
|
def readProperties(parser):
|
|
while True:
|
|
prop = XcfProperty(parser, "property[]")
|
|
yield prop
|
|
if prop["type"].value == 0:
|
|
return
|
|
|
|
|
|
class XcfFile(Parser):
|
|
PARSER_TAGS = {
|
|
"id": "xcf",
|
|
"category": "image",
|
|
"file_ext": ("xcf",),
|
|
"mime": ("image/x-xcf", "application/x-gimp-image"),
|
|
# header+empty property+layer offset+channel offset
|
|
"min_size": (26 + 8 + 4 + 4) * 8,
|
|
"magic": (
|
|
(b'gimp xcf file\0', 0),
|
|
(b'gimp xcf v002\0', 0),
|
|
),
|
|
"description": "Gimp (XCF) picture"
|
|
}
|
|
endian = NETWORK_ENDIAN
|
|
IMAGE_TYPE_NAME = {
|
|
0: "RGB",
|
|
1: "Gray",
|
|
2: "Indexed"
|
|
}
|
|
|
|
def validate(self):
|
|
if self.stream.readBytes(0, 14) not in (b'gimp xcf file\0', b'gimp xcf v002\0'):
|
|
return "Wrong signature"
|
|
return True
|
|
|
|
def createFields(self):
|
|
# Read signature
|
|
yield String(self, "signature", 14, "Gimp picture signature (ends with nul byte)", charset="ASCII")
|
|
|
|
# Read image general informations (width, height, type)
|
|
yield UInt32(self, "width", "Image width")
|
|
yield UInt32(self, "height", "Image height")
|
|
yield Enum(UInt32(self, "type", "Image type"), self.IMAGE_TYPE_NAME)
|
|
for prop in readProperties(self):
|
|
yield prop
|
|
|
|
# Read layer offsets
|
|
layer_offsets = []
|
|
while True:
|
|
chunk = UInt32(self, "layer_offset[]", "Layer offset")
|
|
yield chunk
|
|
if chunk.value == 0:
|
|
break
|
|
layer_offsets.append(chunk.value)
|
|
|
|
# Read channel offsets
|
|
channel_offsets = []
|
|
while True:
|
|
chunk = UInt32(self, "channel_offset[]", "Channel offset")
|
|
yield chunk
|
|
if chunk.value == 0:
|
|
break
|
|
channel_offsets.append(chunk.value)
|
|
|
|
# Read layers
|
|
for index, offset in enumerate(layer_offsets):
|
|
if index + 1 < len(layer_offsets):
|
|
size = (layer_offsets[index + 1] - offset) * 8
|
|
else:
|
|
size = None
|
|
padding = self.seekByte(offset, relative=False)
|
|
if padding:
|
|
yield padding
|
|
yield XcfLayer(self, "layer[]", size=size)
|
|
|
|
# Read channels
|
|
for index, offset in enumerate(channel_offsets):
|
|
if index + 1 < len(channel_offsets):
|
|
size = (channel_offsets[index + 1] - offset) * 8
|
|
else:
|
|
size = None
|
|
padding = self.seekByte(offset, relative=False)
|
|
if padding is not None:
|
|
yield padding
|
|
yield XcfChannel(self, "channel[]", "Channel", size=size)
|