forked from 0x2620/pandora
195 lines
7.3 KiB
Python
195 lines
7.3 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from __future__ import division, with_statement
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from django.db import models
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from django.conf import settings
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import ox
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from archive import extract
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import managers
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class MetaClip:
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def update_calculated_values(self):
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start = self.start
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end = self.end
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if self.item.sort.duration:
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start = min(self.start, self.item.sort.duration)
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end = min(self.end, self.item.sort.duration)
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self.duration = end - start
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if int(end*25) - int(start*25) > 0:
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self.hue, self.saturation, self.lightness = extract.average_color(
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self.item.timeline_prefix, self.start, self.end)
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self.volume = extract.average_volume(self.item.timeline_prefix, self.start, self.end)
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else:
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self.hue = self.saturation = self.lightness = 0
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self.volume = 0
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def save(self, *args, **kwargs):
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if self.duration != self.end - self.start:
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self.update_calculated_values()
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if not self.aspect_ratio and self.item:
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streams = self.item.streams()
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if streams:
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self.aspect_ratio = streams[0].aspect_ratio
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if self.item:
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self.user = self.item.user and self.item.user.id
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self.sort = self.item.sort
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if self.id:
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sortvalue = ''
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if self.id:
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for l in settings.CONFIG.get('clipLayers', []):
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sortvalue += ''.join(filter(lambda s: s,
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[a.sortvalue
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for a in self.annotations.filter(layer=l).order_by('sortvalue')]))
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if sortvalue:
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self.sortvalue = sortvalue[:900]
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else:
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self.sortvalue = None
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self.findvalue = '\n'.join(filter(None, [a.findvalue for a in self.annotations.all()]))
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for l in settings.CONFIG['clipLayers']:
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setattr(self, l, self.annotations.filter(layer=l).count()>0)
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models.Model.save(self, *args, **kwargs)
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clip_keys = ('id', 'in', 'out', 'position', 'created', 'modified',
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'hue', 'saturation', 'lightness', 'volume', 'videoRatio')
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def json(self, keys=None, qs=None):
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j = {}
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for key in self.clip_keys:
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j[key] = getattr(self, {
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'id': 'public_id',
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'in': 'start',
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'out': 'end',
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'position': 'start',
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'videoRatio': 'aspect_ratio',
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}.get(key, key))
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if not j['videoRatio']:
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j['videoRatio'] = 4/3
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if keys:
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for key in j.keys():
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if key not in keys:
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del j[key]
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#needed here to make item find with clips work
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if 'annotations' in keys:
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annotations = self.annotations.filter(layer__in=settings.CONFIG['clipLayers'])
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if qs:
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annotations = annotations.filter(qs)
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j['annotations'] = [a.json(keys=['value', 'id', 'layer'])
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for a in annotations]
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if 'layers' in keys:
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j['layers'] = self.get_layers()
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if 'cuts' in keys:
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j['cuts'] = tuple([c for c in self.item.get('cuts') if c > self.start and c < self.end])
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for key in keys:
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if key not in self.clip_keys and key not in j:
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value = self.item.get(key) or self.item.json.get(key)
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if not value and hasattr(self.item.sort, key):
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value = getattr(self.item.sort, key)
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if value != None:
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j[key] = value
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return j
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def edit_json(self, user=None):
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data = {
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'id': ox.toAZ(self.id),
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}
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data['item'] = self.item.itemId
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data['in'] = self.start
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data['out'] = self.end
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data['parts'] = self.item.json['parts']
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data['durations'] = self.item.json['durations']
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for key in ('title', 'director', 'year', 'videoRatio'):
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value = self.item.json.get(key)
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if value:
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data[key] = value
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data['duration'] = data['out'] - data['in']
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data['cuts'] = tuple([c for c in self.item.get('cuts') if c > self.start and c < self.end])
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data['layers'] = self.get_layers(user)
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return data
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def get_layers(self, user=None):
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from annotation.models import Annotation
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start = self.start
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end = self.end
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item = self.item
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layers = {}
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for l in settings.CONFIG['layers']:
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name = l['id']
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ll = layers.setdefault(name, [])
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qs = Annotation.objects.filter(layer=name, item=item).order_by(
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'start', 'end', 'sortvalue')
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if name == 'subtitles':
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qs = qs.exclude(value='')
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qs = qs.filter(start__lt=end, end__gt=start)
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if l.get('private'):
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if user and user.is_anonymous():
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user = None
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qs = qs.filter(user=user)
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for a in qs.order_by('start'):
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ll.append(a.json(user=user))
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return layers
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@classmethod
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def get_or_create(cls, item, start, end):
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start = float(start)
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end = float(end)
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start = float('%0.03f' % start)
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end = float('%0.03f' % end)
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qs = cls.objects.filter(item=item, start=start, end=end)
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if qs.count() == 0:
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clip, created = cls.objects.get_or_create(item=item, start=start, end=end)
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clip.save()
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created = True
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else:
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clip = qs[0]
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created = False
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return clip, created
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@property
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def public_id(self):
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return u"%s/%0.03f-%0.03f" % (self.item.itemId, float(self.start), float(self.end))
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def __unicode__(self):
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return self.public_id
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class Meta:
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unique_together = ("item", "start", "end")
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attrs = {
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'__module__': 'clip.models',
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'Meta': Meta,
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'objects': managers.ClipManager(),
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'created': models.DateTimeField(auto_now_add=True),
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'modified': models.DateTimeField(auto_now=True),
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'aspect_ratio': models.FloatField(default=0),
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'item': models.ForeignKey('item.Item', related_name='clips'),
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'sort': models.ForeignKey('item.ItemSort', related_name='matching_clips'),
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'user': models.IntegerField(db_index=True, null=True),
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#seconds
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'start': models.FloatField(default=-1, db_index=True),
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'end': models.FloatField(default=-1),
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'duration': models.FloatField(default=0, db_index=True),
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#get from annotation
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'hue': models.FloatField(default=0, db_index=True),
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'saturation': models.FloatField(default=0, db_index=True),
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'lightness': models.FloatField(default=0, db_index=True),
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'volume': models.FloatField(default=0, null=True, db_index=True),
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'sortvalue': models.CharField(max_length=1000, null=True, db_index=True),
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'findvalue': models.TextField(null=True, db_index=settings.DB_GIN_TRGM),
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}
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for name in settings.CONFIG['clipLayers']:
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attrs[name] = models.BooleanField(default=False, db_index=True)
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Clip = type('Clip', (MetaClip,models.Model), attrs)
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class Random(models.Model):
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clip = models.ForeignKey(Clip, primary_key=True)
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random = models.BigIntegerField(db_index=True, null=True)
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