def ooyala_thubmnail(embed_code, resolution='320x240', indicies="0-25", cache=True):
""" Grab one of the custom thumbnail images - ooyala may return bigger
images than requested at a higher compression rate so they should be also
force-sized in your CSS. Indicies will return a number of thumbs, ones
in the middle tend to be "better" suited to display """
thumb = None
try:
if cache:
video = OoyalaItem.objects.get(embed_code=embed_code)
thumb = video.thumbnail
if not thumb:
thumbs = OoyalaThumbnail(embed_code=embed_code, resolution=resolution, indicies=indicies).process()
thumbs_data = thumbs.getElementsByTagName('thumbnail')
idx = len(thumbs_data)/2
thumb = thumbs_data[idx].firstChild.nodeValue
if cache:
video.thumbnail = thumb
video.save()
return thumb
except (IndexError, AttributeError):
return NO_THUMB
def enlarge_thumbnail(oitem, desired_size='278x175'):
"""
Basic issue: we cache a thumbnail but don't record the size.
So a small thumbnail can be cached sometimes.
"""
desired_x = int(desired_size.split('x')[0])
small_url = oitem.thumbnail
if not small_url:
print 'no thumb in place, TODO: get a random new one'
return None
img_data = urllib.urlopen(small_url).read()
f = StringIO(img_data)
size = Image.open(f).size
if size[0] > desired_x:
print 'already have a bigger image: %s > %s' % (size, desired_size)
if '#' not in oitem.thumbnail:
oitem.thumbnail += FIXED_THUMB_SYMBOL
oitem.save()
return None
res = '%sx%s' % size
small_thumbs = OoyalaThumbnail(embed_code=oitem.embed_code, resolution=res, indicies='0-25').process()
if isinstance(small_thumbs, str):
print 'OoyalaThumbnail error:', small_thumbs
return None
if oitem.thumbnail not in small_thumbs.toprettyxml():
print 'existing thumb not found in xml'
return None
res = re.findall(r'index="(\d+)".*\n.*%s' % oitem.thumbnail, small_thumbs.toprettyxml())
if res and res[0] and res[0].isdigit:
idx = int(res[0])
else:
print 'regex not matched:', repr(res)
if 'promo' in oitem.thumbnail:
print 'promo image', oitem.thumbnail
return None
thumbs_data = small_thumbs.getElementsByTagName('thumbnail')
big_thumbs = OoyalaThumbnail(embed_code=oitem.embed_code, resolution=desired_size, indicies='0-25').process()
thumbs_data = big_thumbs.getElementsByTagName('thumbnail')
big_url = thumbs_data[idx].firstChild.nodeValue
# mark enlarged thumbs with a hash
oitem.thumbnail = big_url + FIXED_THUMB_SYMBOL
oitem.save()
return big_url
