serve frames and videos with X-Sendfile header

README

@@ -30,3 +30,7 @@ Development:
     we are using django, http://docs.djangoproject.com/en/dev/
     communication between webserver and background tasks is done via rabbitmq
     http://github.com/ask/carrot/ for more info on the lib used to communicate
+
+
+Apache setup:
+    sudo apt-get install libapache2-mod-wsgi libapache2-mod-xsendfile

apache/vhost.conf.in

@@ -8,16 +8,21 @@
         Allow from all
     </Directory>
 
-    Alias /.bzr        /oxdb/.bzr
-    Alias /static      __PREFIX__/oxdb/static
-    Alias /favicon.ico __PREFIX__/oxdb/static/favicon.ico
-    Alias /media       __PREFIX__/oxdb/media
+    <Location />
+        XSendFile on
+        XSendFileAllowAbove on
+    </Location>
+
+    Alias /.bzr        __PREFIX__/.bzr
+    Alias /static      __PREFIX__/pandora/static
+    Alias /favicon.ico __PREFIX__/pandora/static/favicon.ico
+    Alias /media       __PREFIX__/pandora/media
     Alias /admin/media __PREFIX__/src/django/django/contrib/admin/media
     Alias /static/js/jquery.js __PREFIX__/src/django/django/contrib/admin/media/js/jquery.min.js
     WSGIScriptAlias / __PREFIX__/wsgi/django.wsgi
 
-    WSGIDaemonProcess oxdb user=oxdb group=oxdb threads=25 python-path=__PREFIX__/lib/python2.6/site-packages/
-    WSGIProcessGroup oxdb
+    WSGIDaemonProcess pandora user=pandora group=pandora threads=25 python-path=__PREFIX__/lib/python2.6/site-packages/
+    WSGIProcessGroup pandora
 
     ServerSignature Off
 </VirtualHost>

pandora/backend/models.py

@@ -10,6 +10,7 @@ from django.db.models import Q
 from django.contrib.auth.models import User
 from django.core.files.base import ContentFile
 from django.utils import simplejson as json
+from django.conf import settings
 
 from oxdjango import fields
 import oxlib
@@ -430,6 +431,11 @@ class Movie(models.Model):
                           self.get('series_title', ''), self.get('episode_title', ''),
                           self.get('season', ''), self.get('episode', ''))
 
+    def frame(self, position, width=128):
+        #FIXME: compute offset and so on
+        f = self.files.all()[0]
+        return f.frame(position, width)
+
     def updateFind(self):
         try:
             f = self.find
@@ -1155,7 +1161,9 @@ class File(models.Model):
     def frame(self, position, width=128):
         videoFile = getattr(self, 'stream_%s'%settings.VIDEO_PROFILE).path
         frameFolder = os.path.join(os.path.dirname(videoFile), 'frames')
-        extract.frame(videoFile, position, frameFolder, width)
+        if position<= self.duration:
+            return extract.frame(videoFile, position, frameFolder, width)
+        return None
 
     def editable(self, user):
         '''

pandora/backend/urls.py

@@ -6,6 +6,8 @@ from django.conf.urls.defaults import *
 
 urlpatterns = patterns("backend.views",
     (r'^upload/$', 'firefogg_upload'),
+    (r'^frame/(?P<id>.*)/(?P<position>.*)\.(?P<size>\d+).jpg$', 'frame'),
+    (r'^stream/(?P<id>.*).(?P<quality>.*).ogv$', 'video'),
     (r'^$', 'api'),
 )
 

pandora/backend/views.py

@@ -1,17 +1,19 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division
 import os.path
 import re
 from datetime import datetime
 from urllib2 import unquote
 import json
+import mimetypes
 
 from django import forms
 from django.core.paginator import Paginator
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import User
 from django.db.models import Q, Avg, Count
-from django.http import HttpResponse
+from django.http import HttpResponse, Http404
 from django.shortcuts import render_to_response, get_object_or_404, get_list_or_404
 from django.template import RequestContext
 from django.conf import settings
@@ -23,6 +25,8 @@ except ImportError:
 
 from oxdjango.decorators import login_required_json
 from oxdjango.shortcuts import render_to_json_response, get_object_or_404_json, json_response
+from oxdjango.http import HttpFileResponse
+import oxlib
 
 import models
 import utils
@@ -631,6 +635,24 @@ def api_subtitles(request):
         response['data']['languages'] = [f['language'] for f in l]
         return render_to_json_response(response)
     
+def video(request, id, quality):
+    movie = get_object_or_404(models.Movie, movieId=id)
+    if quality not in settings.VIDEO_ENCODING:
+        raise Http404
+    stream = getattr(movie, 'stream_'+quality)
+    response = HttpFileResponse(stream.path, content_type='video/ogg')
+    #FIXME: movie needs duration field
+    #response['Content-Duration'] = movie.duration
+    return response
+
+def frame(request, id, position, size):
+    movie = get_object_or_404(models.Movie, movieId=id)
+    position = oxlib.time2ms(position)/1000
+    frame = movie.frame(position, int(size))
+    if not frame:
+        raise Http404
+    return HttpFileResponse(frame, content_type='image/jpeg')
+
 '''
 GET list
     > {

pandora/settings.py

@@ -13,6 +13,8 @@ DEBUG = True
 TEMPLATE_DEBUG = DEBUG
 JSON_DEBUG = False
 
+XSENDFILE = False
+
 ADMINS = (
      ('j', 'j@mailb.org'),
 )