mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-23 19:23:37 +00:00
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
"""
|
|
PCX picture filter.
|
|
"""
|
|
|
|
from hachoir.parser import Parser
|
|
from hachoir.field import (
|
|
UInt8, UInt16,
|
|
PaddingBytes, RawBytes,
|
|
Enum)
|
|
from hachoir.parser.image.common import PaletteRGB
|
|
from hachoir.core.endian import LITTLE_ENDIAN
|
|
|
|
|
|
class PcxFile(Parser):
|
|
endian = LITTLE_ENDIAN
|
|
PARSER_TAGS = {
|
|
"id": "pcx",
|
|
"category": "image",
|
|
"file_ext": ("pcx",),
|
|
"mime": ("image/x-pcx",),
|
|
"min_size": 128 * 8,
|
|
"description": "PC Paintbrush (PCX) picture"
|
|
}
|
|
compression_name = {1: "Run-length encoding (RLE)"}
|
|
version_name = {
|
|
0: "Version 2.5 of PC Paintbrush",
|
|
2: "Version 2.8 with palette information",
|
|
3: "Version 2.8 without palette information",
|
|
4: "PC Paintbrush for Windows",
|
|
5: "Version 3.0 (or greater) of PC Paintbrush"
|
|
}
|
|
|
|
def validate(self):
|
|
if self["id"].value != 10:
|
|
return "Wrong signature"
|
|
if self["version"].value not in self.version_name:
|
|
return "Unknown format version"
|
|
if self["bpp"].value not in (1, 2, 4, 8, 24, 32):
|
|
return "Unknown bits/pixel"
|
|
if self["reserved[0]"].value != b"\0":
|
|
return "Invalid reserved value"
|
|
return True
|
|
|
|
def createFields(self):
|
|
yield UInt8(self, "id", "PCX identifier (10)")
|
|
yield Enum(UInt8(self, "version", "PCX version"), self.version_name)
|
|
yield Enum(UInt8(self, "compression", "Compression method"), self.compression_name)
|
|
yield UInt8(self, "bpp", "Bits / pixel")
|
|
yield UInt16(self, "xmin", "Minimum X")
|
|
yield UInt16(self, "ymin", "Minimum Y")
|
|
yield UInt16(self, "xmax", "Width minus one") # value + 1
|
|
yield UInt16(self, "ymax", "Height minus one") # value + 1
|
|
yield UInt16(self, "horiz_dpi", "Horizontal DPI")
|
|
yield UInt16(self, "vert_dpi", "Vertical DPI")
|
|
yield PaletteRGB(self, "palette_4bits", 16, "Palette (4 bits)")
|
|
yield PaddingBytes(self, "reserved[]", 1)
|
|
yield UInt8(self, "nb_color_plan", "Number of color plans")
|
|
yield UInt16(self, "bytes_per_line", "Bytes per line")
|
|
yield UInt16(self, "color_mode", "Color mode")
|
|
yield PaddingBytes(self, "reserved[]", 58)
|
|
|
|
if self._size is None: # TODO: is it possible to handle piped input?
|
|
raise NotImplementedError
|
|
|
|
nb_colors = 256
|
|
size = (self._size - self.current_size) // 8
|
|
has_palette = self["bpp"].value == 8
|
|
if has_palette:
|
|
size -= nb_colors * 3
|
|
yield RawBytes(self, "image_data", size, "Image data")
|
|
|
|
if has_palette:
|
|
yield PaletteRGB(self, "palette_8bits", nb_colors, "Palette (8 bit)")
|