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mirror of https://github.com/moparisthebest/SickRage synced 2024-11-16 22:35:03 -05:00
SickRage/lib/hachoir_parser/image/exif.py
echel0n 0d9fbc1ad7 Welcome to our SickBeard-TVRage Edition ...
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!
2014-03-09 22:39:12 -07:00

362 lines
12 KiB
Python

"""
EXIF metadata parser (can be found in a JPEG picture for example)
Author: Victor Stinner
"""
from lib.hachoir_core.field import (FieldSet, ParserError,
UInt8, UInt16, UInt32,
Int32, Enum, String,
Bytes, SubFile,
NullBytes, createPaddingField)
from lib.hachoir_core.endian import LITTLE_ENDIAN, BIG_ENDIAN, NETWORK_ENDIAN
from lib.hachoir_core.text_handler import textHandler, hexadecimal
from lib.hachoir_core.tools import createDict
MAX_COUNT = 1000
def rationalFactory(class_name, size, field_class):
class Rational(FieldSet):
static_size = size
def createFields(self):
yield field_class(self, "numerator")
yield field_class(self, "denominator")
def createValue(self):
return float(self["numerator"].value) / self["denominator"].value
cls = Rational
cls.__name__ = class_name
return cls
RationalInt32 = rationalFactory("RationalInt32", 64, Int32)
RationalUInt32 = rationalFactory("RationalUInt32", 64, UInt32)
class BasicIFDEntry(FieldSet):
TYPE_BYTE = 0
TYPE_UNDEFINED = 7
TYPE_RATIONAL = 5
TYPE_SIGNED_RATIONAL = 10
TYPE_INFO = {
1: (UInt8, "BYTE (8 bits)"),
2: (String, "ASCII (8 bits)"),
3: (UInt16, "SHORT (16 bits)"),
4: (UInt32, "LONG (32 bits)"),
5: (RationalUInt32, "RATIONAL (2x LONG, 64 bits)"),
7: (Bytes, "UNDEFINED (8 bits)"),
9: (Int32, "SIGNED LONG (32 bits)"),
10: (RationalInt32, "SRATIONAL (2x SIGNED LONGs, 64 bits)"),
}
ENTRY_FORMAT = createDict(TYPE_INFO, 0)
TYPE_NAME = createDict(TYPE_INFO, 1)
def createFields(self):
yield Enum(textHandler(UInt16(self, "tag", "Tag"), hexadecimal), self.TAG_NAME)
yield Enum(textHandler(UInt16(self, "type", "Type"), hexadecimal), self.TYPE_NAME)
yield UInt32(self, "count", "Count")
if self["type"].value not in (self.TYPE_BYTE, self.TYPE_UNDEFINED) \
and MAX_COUNT < self["count"].value:
raise ParserError("EXIF: Invalid count value (%s)" % self["count"].value)
value_size, array_size = self.getSizes()
# Get offset/value
if not value_size:
yield NullBytes(self, "padding", 4)
elif value_size <= 32:
if 1 < array_size:
name = "value[]"
else:
name = "value"
kw = {}
cls = self.value_cls
if cls is String:
args = (self, name, value_size/8, "Value")
kw["strip"] = " \0"
kw["charset"] = "ISO-8859-1"
elif cls is Bytes:
args = (self, name, value_size/8, "Value")
else:
args = (self, name, "Value")
for index in xrange(array_size):
yield cls(*args, **kw)
size = array_size * value_size
if size < 32:
yield NullBytes(self, "padding", (32-size)//8)
else:
yield UInt32(self, "offset", "Value offset")
def getSizes(self):
"""
Returns (value_size, array_size): value_size in bits and
array_size in number of items.
"""
# Create format
self.value_cls = self.ENTRY_FORMAT.get(self["type"].value, Bytes)
# Set size
count = self["count"].value
if self.value_cls in (String, Bytes):
return 8 * count, 1
else:
return self.value_cls.static_size * count, count
class ExifEntry(BasicIFDEntry):
OFFSET_JPEG_SOI = 0x0201
EXIF_IFD_POINTER = 0x8769
TAG_WIDTH = 0xA002
TAG_HEIGHT = 0xA003
TAG_GPS_LATITUDE_REF = 0x0001
TAG_GPS_LATITUDE = 0x0002
TAG_GPS_LONGITUDE_REF = 0x0003
TAG_GPS_LONGITUDE = 0x0004
TAG_GPS_ALTITUDE_REF = 0x0005
TAG_GPS_ALTITUDE = 0x0006
TAG_GPS_TIMESTAMP = 0x0007
TAG_GPS_DATESTAMP = 0x001d
TAG_IMG_TITLE = 0x010e
TAG_FILE_TIMESTAMP = 0x0132
TAG_SOFTWARE = 0x0131
TAG_CAMERA_MODEL = 0x0110
TAG_CAMERA_MANUFACTURER = 0x010f
TAG_ORIENTATION = 0x0112
TAG_EXPOSURE = 0x829A
TAG_FOCAL = 0x829D
TAG_BRIGHTNESS = 0x9203
TAG_APERTURE = 0x9205
TAG_USER_COMMENT = 0x9286
TAG_NAME = {
# GPS
0x0000: "GPS version ID",
0x0001: "GPS latitude ref",
0x0002: "GPS latitude",
0x0003: "GPS longitude ref",
0x0004: "GPS longitude",
0x0005: "GPS altitude ref",
0x0006: "GPS altitude",
0x0007: "GPS timestamp",
0x0008: "GPS satellites",
0x0009: "GPS status",
0x000a: "GPS measure mode",
0x000b: "GPS DOP",
0x000c: "GPS speed ref",
0x000d: "GPS speed",
0x000e: "GPS track ref",
0x000f: "GPS track",
0x0010: "GPS img direction ref",
0x0011: "GPS img direction",
0x0012: "GPS map datum",
0x0013: "GPS dest latitude ref",
0x0014: "GPS dest latitude",
0x0015: "GPS dest longitude ref",
0x0016: "GPS dest longitude",
0x0017: "GPS dest bearing ref",
0x0018: "GPS dest bearing",
0x0019: "GPS dest distance ref",
0x001a: "GPS dest distance",
0x001b: "GPS processing method",
0x001c: "GPS area information",
0x001d: "GPS datestamp",
0x001e: "GPS differential",
0x0100: "Image width",
0x0101: "Image height",
0x0102: "Number of bits per component",
0x0103: "Compression scheme",
0x0106: "Pixel composition",
TAG_ORIENTATION: "Orientation of image",
0x0115: "Number of components",
0x011C: "Image data arrangement",
0x0212: "Subsampling ratio Y to C",
0x0213: "Y and C positioning",
0x011A: "Image resolution width direction",
0x011B: "Image resolution in height direction",
0x0128: "Unit of X and Y resolution",
0x0111: "Image data location",
0x0116: "Number of rows per strip",
0x0117: "Bytes per compressed strip",
0x0201: "Offset to JPEG SOI",
0x0202: "Bytes of JPEG data",
0x012D: "Transfer function",
0x013E: "White point chromaticity",
0x013F: "Chromaticities of primaries",
0x0211: "Color space transformation matrix coefficients",
0x0214: "Pair of blank and white reference values",
TAG_FILE_TIMESTAMP: "File change date and time",
TAG_IMG_TITLE: "Image title",
TAG_CAMERA_MANUFACTURER: "Camera (Image input equipment) manufacturer",
TAG_CAMERA_MODEL: "Camera (Input input equipment) model",
TAG_SOFTWARE: "Software",
0x013B: "File change date and time",
0x8298: "Copyright holder",
0x8769: "Exif IFD Pointer",
TAG_EXPOSURE: "Exposure time",
TAG_FOCAL: "F number",
0x8822: "Exposure program",
0x8824: "Spectral sensitivity",
0x8827: "ISO speed rating",
0x8828: "Optoelectric conversion factor OECF",
0x9201: "Shutter speed",
0x9202: "Aperture",
TAG_BRIGHTNESS: "Brightness",
0x9204: "Exposure bias",
TAG_APERTURE: "Maximum lens aperture",
0x9206: "Subject distance",
0x9207: "Metering mode",
0x9208: "Light source",
0x9209: "Flash",
0x920A: "Lens focal length",
0x9214: "Subject area",
0xA20B: "Flash energy",
0xA20C: "Spatial frequency response",
0xA20E: "Focal plane X resolution",
0xA20F: "Focal plane Y resolution",
0xA210: "Focal plane resolution unit",
0xA214: "Subject location",
0xA215: "Exposure index",
0xA217: "Sensing method",
0xA300: "File source",
0xA301: "Scene type",
0xA302: "CFA pattern",
0xA401: "Custom image processing",
0xA402: "Exposure mode",
0xA403: "White balance",
0xA404: "Digital zoom ratio",
0xA405: "Focal length in 35 mm film",
0xA406: "Scene capture type",
0xA407: "Gain control",
0xA408: "Contrast",
0x9000: "Exif version",
0xA000: "Supported Flashpix version",
0xA001: "Color space information",
0x9101: "Meaning of each component",
0x9102: "Image compression mode",
TAG_WIDTH: "Valid image width",
TAG_HEIGHT: "Valid image height",
0x927C: "Manufacturer notes",
TAG_USER_COMMENT: "User comments",
0xA004: "Related audio file",
0x9003: "Date and time of original data generation",
0x9004: "Date and time of digital data generation",
0x9290: "DateTime subseconds",
0x9291: "DateTimeOriginal subseconds",
0x9292: "DateTimeDigitized subseconds",
0xA420: "Unique image ID",
0xA005: "Interoperability IFD Pointer"
}
def createDescription(self):
return "Entry: %s" % self["tag"].display
def sortExifEntry(a,b):
return int( a["offset"].value - b["offset"].value )
class ExifIFD(FieldSet):
def seek(self, offset):
"""
Seek to byte address relative to parent address.
"""
padding = offset - (self.address + self.current_size)/8
if 0 < padding:
return createPaddingField(self, padding*8)
else:
return None
def createFields(self):
offset_diff = 6
yield UInt16(self, "count", "Number of entries")
entries = []
next_chunk_offset = None
count = self["count"].value
if not count:
return
while count:
addr = self.absolute_address + self.current_size
next = self.stream.readBits(addr, 32, NETWORK_ENDIAN)
if next in (0, 0xF0000000):
break
entry = ExifEntry(self, "entry[]")
yield entry
if entry["tag"].value in (ExifEntry.EXIF_IFD_POINTER, ExifEntry.OFFSET_JPEG_SOI):
next_chunk_offset = entry["value"].value + offset_diff
if 32 < entry.getSizes()[0]:
entries.append(entry)
count -= 1
yield UInt32(self, "next", "Next IFD offset")
try:
entries.sort( sortExifEntry )
except TypeError:
raise ParserError("Unable to sort entries!")
value_index = 0
for entry in entries:
padding = self.seek(entry["offset"].value + offset_diff)
if padding is not None:
yield padding
value_size, array_size = entry.getSizes()
if not array_size:
continue
cls = entry.value_cls
if 1 < array_size:
name = "value_%s[]" % entry.name
else:
name = "value_%s" % entry.name
desc = "Value of \"%s\"" % entry["tag"].display
if cls is String:
for index in xrange(array_size):
yield cls(self, name, value_size/8, desc, strip=" \0", charset="ISO-8859-1")
elif cls is Bytes:
for index in xrange(array_size):
yield cls(self, name, value_size/8, desc)
else:
for index in xrange(array_size):
yield cls(self, name, desc)
value_index += 1
if next_chunk_offset is not None:
padding = self.seek(next_chunk_offset)
if padding is not None:
yield padding
def createDescription(self):
return "Exif IFD (id %s)" % self["id"].value
class Exif(FieldSet):
def createFields(self):
# Headers
yield String(self, "header", 6, "Header (Exif\\0\\0)", charset="ASCII")
if self["header"].value != "Exif\0\0":
raise ParserError("Invalid EXIF signature!")
yield String(self, "byte_order", 2, "Byte order", charset="ASCII")
if self["byte_order"].value not in ("II", "MM"):
raise ParserError("Invalid endian!")
if self["byte_order"].value == "II":
self.endian = LITTLE_ENDIAN
else:
self.endian = BIG_ENDIAN
yield UInt16(self, "version", "TIFF version number")
yield UInt32(self, "img_dir_ofs", "Next image directory offset")
while not self.eof:
addr = self.absolute_address + self.current_size
tag = self.stream.readBits(addr, 16, NETWORK_ENDIAN)
if tag == 0xFFD8:
size = (self._size - self.current_size) // 8
yield SubFile(self, "thumbnail", size, "Thumbnail (JPEG file)", mime_type="image/jpeg")
break
elif tag == 0xFFFF:
break
yield ExifIFD(self, "ifd[]", "IFD")
padding = self.seekBit(self._size)
if padding is not None:
yield padding