mirror of
https://github.com/moparisthebest/SickRage
synced 2024-12-12 11:02:21 -05:00
0d9fbc1ad7
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer. Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer. Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk! Enjoy!
269 lines
8.9 KiB
Python
269 lines
8.9 KiB
Python
"""
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PNG picture file parser.
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Documents:
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- RFC 2083
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http://www.faqs.org/rfcs/rfc2083.html
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Author: Victor Stinner
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"""
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from lib.hachoir_parser import Parser
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from lib.hachoir_core.field import (FieldSet, Fragment,
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ParserError, MissingField,
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UInt8, UInt16, UInt32,
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String, CString,
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Bytes, RawBytes,
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Bit, NullBits,
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Enum, CompressedField)
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from lib.hachoir_parser.image.common import RGB
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from lib.hachoir_core.text_handler import textHandler, hexadecimal
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from lib.hachoir_core.endian import NETWORK_ENDIAN
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from lib.hachoir_core.tools import humanFilesize
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from datetime import datetime
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MAX_FILESIZE = 500 * 1024 * 1024
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try:
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from zlib import decompressobj
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class Gunzip:
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def __init__(self, stream):
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self.gzip = decompressobj()
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def __call__(self, size, data=None):
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if data is None:
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data = self.gzip.unconsumed_tail
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return self.gzip.decompress(data, size)
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has_deflate = True
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except ImportError:
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has_deflate = False
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UNIT_NAME = {1: "Meter"}
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COMPRESSION_NAME = {
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0: u"deflate" # with 32K sliding window
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}
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MAX_CHUNK_SIZE = 500 * 1024 # Maximum chunk size (500 KB)
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def headerParse(parent):
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yield UInt32(parent, "width", "Width (pixels)")
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yield UInt32(parent, "height", "Height (pixels)")
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yield UInt8(parent, "bit_depth", "Bit depth")
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yield NullBits(parent, "reserved", 5)
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yield Bit(parent, "has_alpha", "Has alpha channel?")
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yield Bit(parent, "color", "Color used?")
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yield Bit(parent, "has_palette", "Has a color palette?")
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yield Enum(UInt8(parent, "compression", "Compression method"), COMPRESSION_NAME)
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yield UInt8(parent, "filter", "Filter method")
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yield UInt8(parent, "interlace", "Interlace method")
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def headerDescription(parent):
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return "Header: %ux%u pixels and %u bits/pixel" % \
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(parent["width"].value, parent["height"].value, getBitsPerPixel(parent))
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def paletteParse(parent):
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size = parent["size"].value
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if (size % 3) != 0:
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raise ParserError("Palette have invalid size (%s), should be 3*n!" % size)
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nb_colors = size // 3
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for index in xrange(nb_colors):
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yield RGB(parent, "color[]")
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def paletteDescription(parent):
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return "Palette: %u colors" % (parent["size"].value // 3)
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def gammaParse(parent):
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yield UInt32(parent, "gamma", "Gamma (x100,000)")
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def gammaValue(parent):
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return float(parent["gamma"].value) / 100000
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def gammaDescription(parent):
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return "Gamma: %.3f" % parent.value
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def textParse(parent):
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yield CString(parent, "keyword", "Keyword", charset="ISO-8859-1")
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length = parent["size"].value - parent["keyword"].size/8
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if length:
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yield String(parent, "text", length, "Text", charset="ISO-8859-1")
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def textDescription(parent):
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if "text" in parent:
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return u'Text: %s' % parent["text"].display
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else:
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return u'Text'
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def timestampParse(parent):
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yield UInt16(parent, "year", "Year")
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yield UInt8(parent, "month", "Month")
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yield UInt8(parent, "day", "Day")
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yield UInt8(parent, "hour", "Hour")
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yield UInt8(parent, "minute", "Minute")
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yield UInt8(parent, "second", "Second")
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def timestampValue(parent):
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value = datetime(
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parent["year"].value, parent["month"].value, parent["day"].value,
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parent["hour"].value, parent["minute"].value, parent["second"].value)
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return value
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def physicalParse(parent):
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yield UInt32(parent, "pixel_per_unit_x", "Pixel per unit, X axis")
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yield UInt32(parent, "pixel_per_unit_y", "Pixel per unit, Y axis")
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yield Enum(UInt8(parent, "unit", "Unit type"), UNIT_NAME)
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def physicalDescription(parent):
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x = parent["pixel_per_unit_x"].value
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y = parent["pixel_per_unit_y"].value
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desc = "Physical: %ux%u pixels" % (x,y)
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if parent["unit"].value == 1:
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desc += " per meter"
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return desc
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def parseBackgroundColor(parent):
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yield UInt16(parent, "red")
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yield UInt16(parent, "green")
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yield UInt16(parent, "blue")
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def backgroundColorDesc(parent):
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rgb = parent["red"].value, parent["green"].value, parent["blue"].value
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name = RGB.color_name.get(rgb)
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if not name:
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name = "#%02X%02X%02X" % rgb
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return "Background color: %s" % name
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class ImageData(Fragment):
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def __init__(self, parent, name="compressed_data"):
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Fragment.__init__(self, parent, name, None, 8*parent["size"].value)
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data = parent.name.split('[')
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data, next = "../%s[%%u]" % data[0], int(data[1][:-1]) + 1
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first = parent.getField(data % 0)
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if first is parent:
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first = None
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if has_deflate:
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CompressedField(self, Gunzip)
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else:
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first = first[name]
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try:
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_next = parent[data % next]
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next = lambda: _next[name]
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except MissingField:
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next = None
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self.setLinks(first, next)
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def parseTransparency(parent):
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for i in range(parent["size"].value):
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yield UInt8(parent, "alpha_value[]", "Alpha value for palette entry %i"%i)
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def getBitsPerPixel(header):
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nr_component = 1
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if header["has_alpha"].value:
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nr_component += 1
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if header["color"].value and not header["has_palette"].value:
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nr_component += 2
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return nr_component * header["bit_depth"].value
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class Chunk(FieldSet):
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TAG_INFO = {
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"tIME": ("time", timestampParse, "Timestamp", timestampValue),
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"pHYs": ("physical", physicalParse, physicalDescription, None),
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"IHDR": ("header", headerParse, headerDescription, None),
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"PLTE": ("palette", paletteParse, paletteDescription, None),
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"gAMA": ("gamma", gammaParse, gammaDescription, gammaValue),
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"tEXt": ("text[]", textParse, textDescription, None),
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"tRNS": ("transparency", parseTransparency, "Transparency Info", None),
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"bKGD": ("background", parseBackgroundColor, backgroundColorDesc, None),
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"IDAT": ("data[]", lambda parent: (ImageData(parent),), "Image data", None),
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"iTXt": ("utf8_text[]", None, "International text (encoded in UTF-8)", None),
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"zTXt": ("comp_text[]", None, "Compressed text", None),
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"IEND": ("end", None, "End", None)
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}
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def createValueFunc(self):
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return self.value_func(self)
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def __init__(self, parent, name, description=None):
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FieldSet.__init__(self, parent, name, description)
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self._size = (self["size"].value + 3*4) * 8
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if MAX_CHUNK_SIZE < (self._size//8):
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raise ParserError("PNG: Chunk is too big (%s)"
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% humanFilesize(self._size//8))
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tag = self["tag"].value
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self.desc_func = None
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self.value_func = None
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if tag in self.TAG_INFO:
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self._name, self.parse_func, desc, value_func = self.TAG_INFO[tag]
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if value_func:
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self.value_func = value_func
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self.createValue = self.createValueFunc
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if desc:
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if isinstance(desc, str):
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self._description = desc
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else:
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self.desc_func = desc
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else:
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self._description = ""
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self.parse_func = None
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def createFields(self):
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yield UInt32(self, "size", "Size")
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yield String(self, "tag", 4, "Tag", charset="ASCII")
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size = self["size"].value
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if size != 0:
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if self.parse_func:
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for field in self.parse_func(self):
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yield field
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else:
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yield RawBytes(self, "content", size, "Data")
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yield textHandler(UInt32(self, "crc32", "CRC32"), hexadecimal)
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def createDescription(self):
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if self.desc_func:
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return self.desc_func(self)
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else:
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return "Chunk: %s" % self["tag"].display
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class PngFile(Parser):
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PARSER_TAGS = {
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"id": "png",
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"category": "image",
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"file_ext": ("png",),
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"mime": (u"image/png", u"image/x-png"),
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"min_size": 8*8, # just the identifier
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"magic": [('\x89PNG\r\n\x1A\n', 0)],
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"description": "Portable Network Graphics (PNG) picture"
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}
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endian = NETWORK_ENDIAN
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def validate(self):
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if self["id"].value != '\x89PNG\r\n\x1A\n':
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return "Invalid signature"
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if self[1].name != "header":
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return "First chunk is not header"
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return True
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def createFields(self):
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yield Bytes(self, "id", 8, r"PNG identifier ('\x89PNG\r\n\x1A\n')")
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while not self.eof:
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yield Chunk(self, "chunk[]")
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def createDescription(self):
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header = self["header"]
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desc = "PNG picture: %ux%ux%u" % (
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header["width"].value, header["height"].value, getBitsPerPixel(header))
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if header["has_alpha"].value:
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desc += " (alpha layer)"
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return desc
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def createContentSize(self):
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field = self["header"]
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start = field.absolute_address + field.size
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end = MAX_FILESIZE * 8
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pos = self.stream.searchBytes("\0\0\0\0IEND\xae\x42\x60\x82", start, end)
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if pos is not None:
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return pos + 12*8
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return None
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