First commit to support ocr subprocess

apps/ocr/literals.py

@@ -0,0 +1,21 @@
+from django.utils.translation import ugettext_lazy as _
+
+
+DOCUMENTQUEUE_STATE_STOPPED = 's'
+DOCUMENTQUEUE_STATE_ACTIVE = 'a'
+
+DOCUMENTQUEUE_STATE_CHOICES = (
+    (DOCUMENTQUEUE_STATE_STOPPED, _(u'stopped')),
+    (DOCUMENTQUEUE_STATE_ACTIVE, _(u'active')),
+)
+
+
+QUEUEDOCUMENT_STATE_PENDING = 'p'
+QUEUEDOCUMENT_STATE_PROCESSING = 'i'
+QUEUEDOCUMENT_STATE_ERROR = 'e'
+
+QUEUEDOCUMENT_STATE_CHOICES = (
+    (QUEUEDOCUMENT_STATE_PENDING, _(u'pending')),
+    (QUEUEDOCUMENT_STATE_PROCESSING, _(u'processing')),
+    (QUEUEDOCUMENT_STATE_ERROR, _(u'error')),
+)