cablegates/pandora/archive/models.py
2011-06-01 18:55:30 +02:00

431 lines
15 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
import os.path
import re
import time
from django.db import models
from django.contrib.auth.models import User
from django.conf import settings
from django.db.models.signals import pre_delete
from ox.django import fields
import ox
from ox.normalize import canonicalTitle
import chardet
from item import utils
from item.models import Item
from person.models import get_name_sort
from annotation.models import Annotation, Layer
class File(models.Model):
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
verified = models.BooleanField(default=False)
oshash = models.CharField(max_length=16, unique=True)
item = models.ForeignKey(Item, related_name='files')
name = models.CharField(max_length=2048, default="") # canoncial path/file
folder = models.CharField(max_length=2048, default="") # canoncial path/file
sort_name = models.CharField(max_length=2048, default="") # sort name
type = models.CharField(default="", max_length=255)
part = models.IntegerField(null=True)
version = models.CharField(default="", max_length=255) # sort path/file name
language = models.CharField(default="", max_length=8)
season = models.IntegerField(default=-1)
episode = models.IntegerField(default=-1)
size = models.BigIntegerField(default=0)
duration = models.FloatField(null=True)
info = fields.DictField(default={})
video_codec = models.CharField(max_length=255)
pixel_format = models.CharField(max_length=255)
display_aspect_ratio = models.CharField(max_length=255)
width = models.IntegerField(default = 0)
height = models.IntegerField(default = 0)
framerate = models.CharField(max_length=255)
audio_codec = models.CharField(max_length=255)
channels = models.IntegerField(default=0)
samplerate = models.IntegerField(default=0)
bits_per_pixel = models.FloatField(default=-1)
pixels = models.BigIntegerField(default=0)
#This is true if derivative is available or subtitles where uploaded
available = models.BooleanField(default = False)
is_audio = models.BooleanField(default=False)
is_video = models.BooleanField(default=False)
is_extra = models.BooleanField(default=False)
is_main = models.BooleanField(default=False)
is_subtitle = models.BooleanField(default=False)
is_version = models.BooleanField(default=False)
def __unicode__(self):
return self.name
def save(self, *args, **kwargs):
instance = self.get_instance()
if instance:
if instance.name.lower().startswith('extras/'):
self.is_extra = True
self.is_main = False
elif instance.name.lower().startswith('versions/'):
self.is_version = True
self.is_main = False
else:
self.is_extra = False
self.is_main = True
else:
self.is_main = False
self.is_extra = False
self.is_version = False
self.name = self.get_name()
self.folder = self.get_folder()
self.sort_name = utils.sort_string(canonicalTitle(self.name))
if self.info:
for key in ('duration', 'size'):
setattr(self, key, self.info.get(key, 0))
if 'video' in self.info and self.info['video'] and \
'width' in self.info['video'][0]:
video = self.info['video'][0]
self.video_codec = video['codec']
self.width = video['width']
self.height = video['height']
self.framerate = video['framerate']
if 'display_aspect_ratio' in video:
self.display_aspect_ratio = video['display_aspect_ratio']
else:
self.display_aspect_ratio = "%s:%s" % (self.width, self.height)
self.is_video = True
self.is_audio = False
if self.name.endswith('.jpg') or \
self.name.endswith('.png') or \
self.duration == 0.04:
self.is_video = False
else:
self.is_video = False
self.display_aspect_ratio = "4:3"
self.width = '320'
self.height = '240'
if 'audio' in self.info and self.info['audio']:
audio = self.info['audio'][0]
self.audio_codec = audio['codec']
self.samplerate = audio.get('samplerate', 0)
self.channels = audio.get('channels', 0)
if not self.is_video:
self.is_audio = True
else:
self.is_audio = False
if self.framerate:
self.pixels = int(self.width * self.height * float(utils.parse_decimal(self.framerate)) * self.duration)
else:
self.is_video = os.path.splitext(self.name)[-1] in ('.avi', '.mkv', '.dv', '.ogv', '.mpeg', '.mov')
self.is_audio = os.path.splitext(self.name)[-1] in ('.mp3', '.wav', '.ogg', '.flac')
self.is_subtitle= os.path.splitext(self.name)[-1] in ('.srt', '.sub', '.idx')
if not self.is_audio and not self.is_video and self.name.endswith('.srt'):
self.is_subtitle = True
self.type = self.get_type()
self.language = self.get_language()
self.part = self.get_part()
if self.type not in ('audio', 'video'):
self.duration = None
super(File, self).save(*args, **kwargs)
#upload and data handling
video = models.FileField(null=True, blank=True,
upload_to=lambda f, x: f.path(settings.VIDEO_PROFILE))
data = models.FileField(null=True, blank=True,
upload_to=lambda f, x: f.path('data.bin'))
def path(self, name):
h = self.oshash
return os.path.join('files', h[:2], h[2:4], h[4:6], h[6:], name)
def contents(self):
if self.data != None:
self.data.seek(0)
return self.data.read()
return None
def srt(self, offset=0):
def _detectEncoding(fp):
bomDict={ # bytepattern : name
(0x00, 0x00, 0xFE, 0xFF): "utf_32_be",
(0xFF, 0xFE, 0x00, 0x00): "utf_32_le",
(0xFE, 0xFF, None, None): "utf_16_be",
(0xFF, 0xFE, None, None): "utf_16_le",
(0xEF, 0xBB, 0xBF, None): "utf_8",
}
# go to beginning of file and get the first 4 bytes
oldFP = fp.tell()
fp.seek(0)
(byte1, byte2, byte3, byte4) = tuple(map(ord, fp.read(4)))
# try bom detection using 4 bytes, 3 bytes, or 2 bytes
bomDetection = bomDict.get((byte1, byte2, byte3, byte4))
if not bomDetection:
bomDetection = bomDict.get((byte1, byte2, byte3, None))
if not bomDetection:
bomDetection = bomDict.get((byte1, byte2, None, None))
## if BOM detected, we're done :-)
fp.seek(oldFP)
if bomDetection:
return bomDetection
encoding = 'latin-1'
#more character detecting magick using http://chardet.feedparser.org/
fp.seek(0)
rawdata = fp.read()
encoding = chardet.detect(rawdata)['encoding']
fp.seek(oldFP)
return encoding
def parseTime(t):
return offset + ox.time2ms(t.replace(',', '.')) / 1000
srt = []
f = open(self.data.path)
encoding = _detectEncoding(f)
data = f.read()
f.close()
data = data.replace('\r\n', '\n')
try:
data = unicode(data, encoding)
except:
try:
data = unicode(data, 'latin-1')
except:
print "failed to detect encoding, giving up"
return srt
srts = re.compile('(\d\d:\d\d:\d\d[,.]\d\d\d)\s*-->\s*(\d\d:\d\d:\d\d[,.]\d\d\d)\s*(.+?)\n\n', re.DOTALL)
i = 0
for s in srts.findall(data):
_s = {'id': str(i),
'in': parseTime(s[0]), 'out': parseTime(s[1]), 'value': s[2].strip()}
srt.append(_s)
i += 1
return srt
def editable(self, user):
#FIXME: check that user has instance of this file
return True
def save_chunk(self, chunk, chunk_id=-1):
if not self.available:
if not self.video:
self.video.save(settings.VIDEO_PROFILE, chunk)
else:
f = open(self.video.path, 'a')
#FIXME: should check that chunk_id/offset is right
f.write(chunk.read())
f.close()
return True
return False
def json(self, keys=None, user=None):
resolution = (self.width, self.height)
if resolution == (0, 0):
resolution = None
duration = self.duration
if self.get_type() != 'video':
duration = None
data = {
'available': self.available,
'duration': duration,
'framerate': self.framerate,
'height': self.height,
'width': self.width,
'resolution': resolution,
'oshash': self.oshash,
'samplerate': self.samplerate,
'video_codec': self.video_codec,
'audio_codec': self.audio_codec,
'name': self.name,
'size': self.size,
'info': self.info,
'users': list(set([i.volume.user.username for i in self.instances.all()])),
'instances': [i.json() for i in self.instances.all()],
'folder': self.get_folder(),
'type': self.get_type(),
'is_main': self.is_main,
'part': self.get_part()
}
if keys:
for k in data.keys():
if k not in keys:
del data[k]
return data
def get_part(self):
if not self.is_extra:
files = list(self.item.files.filter(type=self.type, language=self.language,
is_main=self.is_main).order_by('sort_name'))
if self in files:
return files.index(self) + 1
return None
def get_type(self):
if self.is_video:
return 'video'
if self.is_audio:
return 'audio'
if self.is_subtitle or os.path.splitext(self.name)[-1] in ('.sub', '.idx'):
return 'subtitle'
return 'unknown'
def get_instance(self):
#FIXME: what about other instances?
if self.instances.all().count() > 0:
return self.instances.all()[0]
return None
def get_folder(self):
instance = self.get_instance()
if instance:
return instance.folder
name = os.path.splitext(self.get_name())[0]
name = name.replace('. ', '||').split('.')[0].replace('||', '. ')
if self.item:
if settings.USE_IMDB:
director = self.item.get('director', ['Unknown Director'])
director = map(get_name_sort, director)
director = u'; '.join(director)
director = re.sub(r'[:\\/]', '_', director)
name = os.path.join(director, name)
year = self.item.get('year')
if year:
name += u' (%s)' % year
name = os.path.join(name[0].upper(), name)
return name
return u''
def get_name(self):
instance = self.get_instance()
if instance:
return instance.name
if self.item:
name = self.item.get('title', 'Untitled')
name = re.sub(r'[:\\/]', '_', name)
if not name:
name = 'Untitled'
ext = '.unknown'
return name + ext
def get_language(self):
language = self.name.split('.')
if len(language) >= 3 and len(language[-2]) == 2:
return language[-2]
return ''
def delete_file(sender, **kwargs):
f = kwargs['instance']
if f.video:
f.video.delete()
if f.data:
f.data.delete()
pre_delete.connect(delete_file, sender=File)
class Volume(models.Model):
class Meta:
unique_together = ("user", "name")
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
user = models.ForeignKey(User, related_name='volumes')
name = models.CharField(max_length=1024)
def __unicode__(self):
return u"%s's %s"% (self.user, self.name)
class Instance(models.Model):
class Meta:
unique_together = ("name", "folder", "volume")
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
atime = models.IntegerField(default=lambda: int(time.time()), editable=False)
ctime = models.IntegerField(default=lambda: int(time.time()), editable=False)
mtime = models.IntegerField(default=lambda: int(time.time()), editable=False)
name = models.CharField(max_length=2048)
folder = models.CharField(max_length=2048)
file = models.ForeignKey(File, related_name='instances')
volume = models.ForeignKey(Volume, related_name='files')
def __unicode__(self):
return u"%s's %s <%s>"% (self.volume.user, self.name, self.file.oshash)
@property
def itemId(self):
return File.objects.get(oshash=self.oshash).itemId
def json(self):
return {
'user': self.volume.user.username,
'volume': self.volume.name,
'folder': self.folder,
'name': self.name
}
def frame_path(frame, name):
ext = os.path.splitext(name)[-1]
name = "%s%s" % (frame.position, ext)
return frame.file.path(name)
class Frame(models.Model):
class Meta:
unique_together = ("file", "position")
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
file = models.ForeignKey(File, related_name="frames")
position = models.FloatField()
frame = models.ImageField(default=None, null=True, upload_to=frame_path)
'''
def save(self, *args, **kwargs):
name = "%d.jpg" % self.position
if file.name != name:
#FIXME: frame path should be renamed on save to match current position
super(Frame, self).save(*args, **kwargs)
'''
def __unicode__(self):
return u'%s/%s' % (self.file, self.position)
def delete_frame(sender, **kwargs):
f = kwargs['instance']
if f.frame:
f.frame.delete()
pre_delete.connect(delete_frame, sender=Frame)