add video and audio stream IDs for getStats().switchHistory (#846)

Closes #785, #823

Author: russitto

CONTRIBUTORS

@@ -40,6 +40,7 @@ Jonas Birmé <jonas.birme@eyevinn.se>
 Jono Ward <jonoward@gmail.com>
 Jozef Chúťka <jozefchutka@gmail.com>
 Lucas Gabriel Sánchez <unkiwii@gmail.com>
+Matias Russitto <russitto@gmail.com>
 Mattias Wadman <mattias.wadman@gmail.com>
 Natalie Harris <natalieharris@google.com>
 Nick Desaulniers <nick@mozilla.com>

externs/shaka/player.js

@@ -140,7 +140,9 @@ shakaExtern.Stats;
  *   audioCodec: ?string,
  *   videoCodec: ?string,
  *   primary: boolean,
- *   roles: !Array.<string>
+ *   roles: !Array.<string>,
+ *   videoId: ?number,
+ *   audioId: ?number
  * }}
  *
  * @description
@@ -190,6 +192,10 @@ shakaExtern.Stats;
  *   cannot be satisfied.
  * @property {!Array.<string>} roles
  *   The roles of the track, e.g. 'main', 'caption', or 'commentary'.
+ * @property {?number} videoId
+ *   (only for variant tracks) The video stream id.
+ * @property {?number} audioId
+ *   (only for variant tracks) The audio stream id.
  * @exportDoc
  */
 shakaExtern.Track;

lib/util/stream_utils.js

@@ -268,7 +268,9 @@ shaka.util.StreamUtils.getVariantTracks =
       audioCodec: audioCodec,
       videoCodec: videoCodec,
       primary: variant.primary,
-      roles: roles
+      roles: roles,
+      videoId: variant.video ? variant.video.id : null,
+      audioId: variant.audio ? variant.audio.id : null
     };
   });
 

test/offline/storage_unit.js

@@ -145,7 +145,9 @@ describe('Storage', function() {
         codecs: 'avc1.4d401f, vorbis',
         audioCodec: 'vorbis',
         videoCodec: 'avc1.4d401f',
-        roles: []
+        roles: [],
+        videoId: 0,
+        audioId: 1
       }
     ];
     Promise

test/player_unit.js

@@ -803,7 +803,9 @@ describe('Player', function() {
           audioCodec: 'mp4a.40.2',
           videoCodec: 'avc1.4d401f',
           primary: false,
-          roles: []
+          roles: [],
+          videoId: 4,
+          audioId: 1
         },
         {
           id: 2,
@@ -821,7 +823,9 @@ describe('Player', function() {
           audioCodec: 'mp4a.40.2',
           videoCodec: 'avc1.4d401f',
           primary: false,
-          roles: []
+          roles: [],
+          videoId: 5,
+          audioId: 1
         },
         {
           id: 3,
@@ -839,7 +843,9 @@ describe('Player', function() {
           audioCodec: 'mp4a.40.2',
           videoCodec: 'avc1.4d401f',
           primary: false,
-          roles: []
+          roles: [],
+          videoId: 4,
+          audioId: 2
         },
         {
           id: 4,
@@ -857,7 +863,9 @@ describe('Player', function() {
           audioCodec: 'mp4a.40.2',
           videoCodec: 'avc1.4d401f',
           primary: false,
-          roles: []
+          roles: [],
+          videoId: 5,
+          audioId: 2
         },
         {
           id: 5,
@@ -875,7 +883,9 @@ describe('Player', function() {
           audioCodec: 'mp4a.40.2',
           videoCodec: 'avc1.4d401f',
           primary: false,
-          roles: []
+          roles: [],
+          videoId: 5,
+          audioId: 8
         }
       ];