From 0fb2a37c6f96e49a7f50f4bbe2f94a660feca983 Mon Sep 17 00:00:00 2001
From: Tommy Ingulfsen <tommyi@stanford.edu>
Date: Thu, 9 Mar 2017 15:33:15 -0800
Subject: [PATCH] Add m4a extension.

---
 config/settings.yml                        | 8 ++++++++
 lib/embed/stacks_media_stream.rb           | 6 +-----
 spec/lib/embed/stacks_media_stream_spec.rb | 4 ++++
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/config/settings.yml b/config/settings.yml
index e87ffd774..e3555feba 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -56,3 +56,11 @@ stream:
     - mpeg
   audio:
     - mp3
+    - m4a
+# Mapping from file extensions to Wowza streaming prefixes
+streaming_prefix:
+  mov: 'mp4'
+  mp4: 'mp4'
+  mpeg: 'mp4'
+  m4a: 'mp4'
+  mp3: 'mp3'
diff --git a/lib/embed/stacks_media_stream.rb b/lib/embed/stacks_media_stream.rb
index 8dc7a611f..a63cfa81c 100644
--- a/lib/embed/stacks_media_stream.rb
+++ b/lib/embed/stacks_media_stream.rb
@@ -44,11 +44,7 @@ def streaming_url_delimiter(type)
     end
 
     def streaming_file_prefix
-      if video?
-        'mp4'
-      elsif audio?
-        'mp3'
-      end
+      Settings.streaming_prefix[file_extension]
     end
 
     def video?
diff --git a/spec/lib/embed/stacks_media_stream_spec.rb b/spec/lib/embed/stacks_media_stream_spec.rb
index 561b09ae6..0cc9aa6a8 100644
--- a/spec/lib/embed/stacks_media_stream_spec.rb
+++ b/spec/lib/embed/stacks_media_stream_spec.rb
@@ -39,6 +39,10 @@
       sms = described_class.new(druid: 'ab012cd3456', file_name: 'def.mp3')
       expect(sms.to_manifest_url).to eq "https://#{streaming_base_url}/ab/012/cd/3456/mp3:def.mp3/manifest.mpd"
     end
+    it 'audio - m4a' do
+      sms = described_class.new(druid: 'ab012cd3456', file_name: 'def.m4a')
+      expect(sms.to_manifest_url).to eq "https://#{streaming_base_url}/ab/012/cd/3456/mp4:def.m4a/manifest.mpd"
+    end
     it 'unknown' do
       sms = described_class.new(druid: 'ab012cd3456', file_name: 'def.xxx')
       expect(sms.to_manifest_url).to be_nil