feat(player): Add a setting to adjust player seek duration

Create a seekOffset dropdown setting defaulting to 10 seconds.
Update the fastForwardTick method  of the GestureControlView to take the
seekOffset setting into account and update the view accordingly.

app/src/main/java/com/futo/platformplayer/Settings.kt

@@ -486,6 +486,22 @@ class Settings : FragmentedStorageFileJson() {
 
         @FormField(R.string.delete_watchlist_on_finish, FieldForm.TOGGLE, R.string.delete_watchlist_on_finish_description, 22)
         var deleteFromWatchLaterAuto: Boolean = true;
+
+        @FormField(R.string.seek_offset, FieldForm.DROPDOWN, R.string.seek_offset_description, 23)
+        @DropdownFieldOptionsId(R.array.seek_offset_duration)
+        var seekOffset: Int = 2;
+
+        fun getSeekOffset(): Long {
+          return when(seekOffset) {
+            0 -> 3_000L;
+            1 -> 5_000L;
+            2 -> 10_000L;
+            3 -> 20_000L;
+            4 -> 30_000L;
+            5 -> 60_000L;
+            else -> 10_000L;
+          }
+        }
     }
 
     @FormField(R.string.comments, "group", R.string.comments_description, 6)

app/src/main/java/com/futo/platformplayer/views/behavior/GestureControlView.kt

@@ -628,12 +628,12 @@ class GestureControlView : LinearLayout {
     private fun fastForwardTick() {
         _fastForwardCounter++;
 
-        val seekOffset: Long = 10000;
+        val seekOffset: Long = Settings.instance.playback.getSeekOffset();
         if (_rewinding) {
-            _textRewind.text = "${_fastForwardCounter * 10} " + context.getString(R.string.seconds);
+            _textRewind.text = "${_fastForwardCounter * seekOffset / 1_000} " + context.getString(R.string.seconds);
             onSeek.emit(-seekOffset);
         } else {
-            _textFastForward.text = "${_fastForwardCounter * 10} " + context.getString(R.string.seconds);
+            _textFastForward.text = "${_fastForwardCounter * seekOffset / 1_000} " + context.getString(R.string.seconds);
             onSeek.emit(seekOffset);
         }
     }

app/src/main/res/values-fr/strings.xml

@@ -688,6 +688,14 @@
         <item>Continuer la lecture</item>
         <item>Superposition du lecteur</item>
     </string-array>
+    <string-array name="seek_offset_duration">
+        <item>3 secondes</item>
+        <item>5 secondes</item>
+        <item>10 secondes</item>
+        <item>20 secondes</item>
+        <item>30 secondes</item>
+        <item>60 secondes</item>
+    </string-array>
     <string-array name="resume_after_preview">
         <item>Reprendre depuis le début</item>
         <item>Reprendre après 10s</item>

app/src/main/res/values/strings.xml

@@ -403,6 +403,8 @@
     <string name="allow_full_screen_portrait">Allow full-screen portrait when watching horizontal videos</string>
     <string name="delete_watchlist_on_finish">Delete from WatchLater when watched</string>
     <string name="delete_watchlist_on_finish_description">After you leave a video that you mostly watched, it will be removed from watch later.</string>
+    <string name="seek_offset">Seek duration</string>
+    <string name="seek_offset_description">Fast-Forward / Fast-Rewind duration</string>
     <string name="background_switch_audio">Switch to Audio in Background</string>
     <string name="background_switch_audio_description">Optimize bandwidth usage by switching to audio-only stream in background if available, may cause stutter</string>
     <string name="subscription_group_menu">Groups</string>
@@ -1026,6 +1028,14 @@
         <item>Within 30 seconds of loss</item>
         <item>Always</item>
     </string-array>
+    <string-array name="seek_offset_duration">
+        <item>3 seconds</item>
+        <item>5 seconds</item>
+        <item>10 seconds</item>
+        <item>20 seconds</item>
+        <item>30 seconds</item>
+        <item>60 seconds</item>
+    </string-array>
     <string-array name="rotation_zone">
         <item>15</item>
         <item>30</item>