feat(seekbar): use MPV playtime-remaining for speed-scaled remaining timer (#323)

Author: okhex

app/src/main/java/live/mehiz/mpvkt/ui/player/controls/PlayerControls.kt

@@ -408,10 +408,12 @@ fun PlayerControls(
         ) {
           val invertDuration by playerPreferences.invertDuration.collectAsState()
           val readAhead by MPVLib.propFloat["demuxer-cache-time"].collectAsState()
+          val remaining by MPVLib.propFloat["playtime-remaining"].collectAsState()
           val preciseSeeking by playerPreferences.preciseSeeking.collectAsState()
           SeekbarWithTimers(
             position = position?.toFloat() ?: 0f,
             duration = duration?.toFloat() ?: 0f,
+            remaining = remaining?.toFloat() ?: 0f,
             readAheadValue = readAhead ?: 0f,
             onValueChange = {
               isSeeking = true

app/src/main/java/live/mehiz/mpvkt/ui/player/controls/components/Seekbar.kt

@@ -32,6 +32,7 @@ import live.mehiz.mpvkt.ui.theme.spacing
 fun SeekbarWithTimers(
   position: Float,
   duration: Float,
+  remaining: Float,
   readAheadValue: Float,
   onValueChange: (Float) -> Unit,
   onValueChangeFinished: () -> Unit,
@@ -74,7 +75,7 @@ fun SeekbarWithTimers(
       ),
     )
     VideoTimer(
-      value = if (timersInverted.second) position - duration else duration,
+      value = if (timersInverted.second) -remaining else duration,
       isInverted = timersInverted.second,
       onClick = {
         clickEvent()
@@ -114,6 +115,7 @@ private fun PreviewSeekBar() {
   SeekbarWithTimers(
     5f,
     20f,
+    15f,
     4f,
     {},
     {},