Add layer of indirection for drawables

This allows easy overriding of the resources by app developers

Issue: #6709
PiperOrigin-RevId: 283306121

RELEASENOTES.md

@@ -102,6 +102,9 @@
   * Make showing and hiding player controls accessible to TalkBack in
     `PlayerView`.
   * Rename `spherical_view` surface type to `spherical_gl_surface_view`.
+  * Make it easier to override the shuffle, repeat, fullscreen, VR and small
+    notification icon assets
+    ([#6709](https://github.com/google/ExoPlayer/issues/6709)).
 * Analytics:
   * Remove `AnalyticsCollector.Factory`. Instances should be created directly,
     and the `Player` should be set by calling `AnalyticsCollector.setPlayer`.

library/ui/src/main/res/values/drawables.xml

@@ -20,6 +20,14 @@
   <drawable name="exo_controls_previous">@drawable/exo_icon_previous</drawable>
   <drawable name="exo_controls_fastforward">@drawable/exo_icon_fastforward</drawable>
   <drawable name="exo_controls_rewind">@drawable/exo_icon_rewind</drawable>
+  <drawable name="exo_controls_repeat_all">@drawable/exo_icon_repeat_all</drawable>
+  <drawable name="exo_controls_repeat_off">@drawable/exo_icon_repeat_off</drawable>
+  <drawable name="exo_controls_repeat_one">@drawable/exo_icon_repeat_one</drawable>
+  <drawable name="exo_controls_shuffle_off">@drawable/exo_icon_shuffle_off</drawable>
+  <drawable name="exo_controls_shuffle_on">@drawable/exo_icon_shuffle_on</drawable>
+  <drawable name="exo_controls_fullscreen_enter">@drawable/exo_icon_fullscreen_enter</drawable>
+  <drawable name="exo_controls_fullscreen_exit">@drawable/exo_icon_fullscreen_exit</drawable>
+  <drawable name="exo_controls_vr">@drawable/exo_icon_vr</drawable>
   <drawable name="exo_notification_play">@drawable/exo_icon_play</drawable>
   <drawable name="exo_notification_pause">@drawable/exo_icon_pause</drawable>
   <drawable name="exo_notification_next">@drawable/exo_icon_next</drawable>
@@ -27,4 +35,5 @@
   <drawable name="exo_notification_fastforward">@drawable/exo_icon_fastforward</drawable>
   <drawable name="exo_notification_rewind">@drawable/exo_icon_rewind</drawable>
   <drawable name="exo_notification_stop">@drawable/exo_icon_stop</drawable>
+  <drawable name="exo_notification_small_icon">@drawable/exo_icon_circular_play</drawable>
 </resources>

library/ui/src/main/res/values/styles.xml

@@ -52,7 +52,7 @@
   </style>
 
   <style name="ExoMediaButton.VR">
-    <item name="android:src">@drawable/exo_icon_vr</item>
+    <item name="android:src">@drawable/exo_controls_vr</item>
     <item name="android:contentDescription">@string/exo_controls_vr_description</item>
   </style>