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cache stream aspect ratio in clips table. speedup clips view

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j 2011-10-29 12:01:41 +02:00
parent 50e15ad3b0
commit d3fdb4f578
2 changed files with 15 additions and 10 deletions
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20
pandora/clip/models.py
View file

@ -22,6 +22,7 @@ class Clip(models.Model):
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
public_id = models.CharField(max_length=128, unique=True)
aspect_ratio = models.FloatField(default=0)
item = models.ForeignKey('item.Item', related_name='clips')
@ -37,8 +38,8 @@ class Clip(models.Model):
lightness = models.FloatField(default=0, db_index=True)
volume = models.FloatField(default=0, null=True, db_index=True)
director = models.CharField(max_length=1000)
title = models.CharField(max_length=1000)
director = models.CharField(max_length=1000, db_index=True)
title = models.CharField(max_length=1000, db_index=True)
def update_calculated_values(self):
self.duration = self.end - self.start
@ -51,41 +52,44 @@ class Clip(models.Model):
self.volume = 0
self.director = self.item.sort.director
self.title = self.item.sort.title
def save(self, *args, **kwargs):
self.public_id = u"%s/%s-%s" %(self.item.itemId, float(self.start), float(self.end))
if self.duration != self.end - self.start:
self.update_calculated_values()
if not self.aspect_ratio and self.item:
streams = self.item.streams()
if streams:
self.aspect_ratio = streams[0].aspect_ratio
super(Clip, self).save(*args, **kwargs)
def json(self, keys=None):
j = {}
clip_keys = ('id', 'in', 'out', 'position', 'created', 'modified',
'hue', 'saturation', 'lightness', 'volume')
'hue', 'saturation', 'lightness', 'volume', 'videoRatio')
for key in clip_keys:
j[key] = getattr(self, {
'id': 'public_id',
'in': 'start',
'out': 'end',
'position': 'start',
'videoRatio': 'aspect_ratio',
}.get(key, key))
if keys:
for key in j.keys():
if key not in keys:
del j[key]
if 'videoRatio' in keys:
streams = self.item.streams()
if streams:
j['videoRatio'] = streams[0].aspect_ratio
public_layers = [l['id']
for l in filter(lambda l: not l.get('private', False),
settings.CONFIG['layers'])]
if 'annotations' in keys:
j['annotations'] = [a.json(keys=['value', 'id', 'layer'])
for a in self.annotations.filter(layer__name__in=public_layers).select_related()]
for layer in filter(lambda l: l in keys, public_layers):
j[layer] = [a.json(keys=['id', 'value'])
for a in self.annotations.filter(layer__name=layer)]
for key in keys:
if key not in clip_keys and key not in j:
value = self.item.get(key)

5
pandora/clip/views.py
View file

@ -32,7 +32,7 @@ def order_query(qs, sort):
if operator != '-':
operator = ''
clip_keys = ('public_id', 'start', 'end', 'hue', 'saturation', 'lightness', 'volume',
'annotations__value',
'annotations__value', 'videoRatio',
'director', 'title')
key = {
'id': 'public_id',
@ -40,6 +40,7 @@ def order_query(qs, sort):
'out': 'end',
'position': 'start',
'text': 'annotations__value',
'videoRatio': 'aspect_ratio',
}.get(e['key'], e['key'])
if key.startswith('clip:'):
key = e['key'][len('clip:'):]
@ -76,8 +77,8 @@ def findClips(request):
query = parse_query(data, request.user)
qs = order_query(query['qs'], query['sort'])
if 'keys' in data:
qs = qs.select_related()
qs = qs[query['range'][0]:query['range'][1]]
qs = qs.select_related()
response['data']['items'] = [p.json(keys=data['keys']) for p in qs]
elif 'position' in query:
ids = [i.public_id for i in qs]