playback: call the context-aware ReplayGain mode Auto

Rename the ReplayGainMode value, string resource and user-facing label from Dynamic to Auto. No behaviour change.

app/src/test/kotlin/com/subtracks/data/prefs/UserPreferencesTest.kt

@@ -225,8 +225,8 @@ class UserPreferencesTest {
             assertEquals(ReplayGainMode.Album, prefs.replayGainMode().first())
             assertEquals(3.5f, prefs.replayGainPreampDb().first(), 0f)
 
-            prefs.setReplayGainMode(ReplayGainMode.Dynamic)
-            assertEquals(ReplayGainMode.Dynamic, prefs.replayGainMode().first())
+            prefs.setReplayGainMode(ReplayGainMode.Auto)
+            assertEquals(ReplayGainMode.Auto, prefs.replayGainMode().first())
 
             prefs.setReplayGainPreampDb(99f)
             assertEquals(MAX_REPLAY_GAIN_PREAMP_DB, prefs.replayGainPreampDb().first(), 0f)

app/src/test/kotlin/com/subtracks/playback/ReplayGainControllerTest.kt

@@ -39,8 +39,8 @@ class ReplayGainControllerTest {
     }
 
     @Test
-    fun dynamicModeFollowsTheItemsGainContext() {
-        controller.setSettings(ReplayGainSettings(ReplayGainMode.Dynamic, 0f))
+    fun autoModeFollowsTheItemsGainContext() {
+        controller.setSettings(ReplayGainSettings(ReplayGainMode.Auto, 0f))
 
         controller.applyItem(item("a", trackGain = -6.0206f, albumGain = -1f))
         assertEquals(0.5f, applied.last(), TOLERANCE)

app/src/test/kotlin/com/subtracks/playback/ReplayGainTest.kt

@@ -54,12 +54,12 @@ class ReplayGainTest {
     }
 
     @Test
-    fun dynamicModeAppliesTheAlbumGainInAnAlbumContext() {
+    fun autoModeAppliesTheAlbumGainInAnAlbumContext() {
         assertEquals(
             0.5f,
             replayGainLinearGain(
                 ReplayGain(trackGain = -1f, albumGain = -6.0206f, trackPeak = 1f, albumPeak = 1f),
-                ReplayGainSettings(ReplayGainMode.Dynamic, 0f),
+                ReplayGainSettings(ReplayGainMode.Auto, 0f),
                 albumContext = true,
             ),
             TOLERANCE,
@@ -67,12 +67,12 @@ class ReplayGainTest {
     }
 
     @Test
-    fun dynamicModeAppliesTheTrackGainInAMixedContext() {
+    fun autoModeAppliesTheTrackGainInAMixedContext() {
         assertEquals(
             0.5f,
             replayGainLinearGain(
                 ReplayGain(trackGain = -6.0206f, albumGain = -1f, trackPeak = 1f, albumPeak = 1f),
-                ReplayGainSettings(ReplayGainMode.Dynamic, 0f),
+                ReplayGainSettings(ReplayGainMode.Auto, 0f),
                 albumContext = false,
             ),
             TOLERANCE,
@@ -80,8 +80,8 @@ class ReplayGainTest {
     }
 
     @Test
-    fun dynamicModeFallsBackInEitherContext() {
-        val settings = ReplayGainSettings(ReplayGainMode.Dynamic, 0f)
+    fun autoModeFallsBackInEitherContext() {
+        val settings = ReplayGainSettings(ReplayGainMode.Auto, 0f)
 
         assertEquals(0.5f, replayGainLinearGain(ReplayGain(trackGain = -6.0206f), settings, albumContext = true), TOLERANCE)
         assertEquals(0.5f, replayGainLinearGain(ReplayGain(albumGain = -6.0206f), settings, albumContext = false), TOLERANCE)

app/src/test/kotlin/com/subtracks/ui/settings/ReplayGainControlsTest.kt

@@ -19,7 +19,7 @@ class ReplayGainControlsTest {
         assertEquals("Off", replayGainModeLabel(resources, ReplayGainMode.Off))
         assertEquals("Track gain", replayGainModeLabel(resources, ReplayGainMode.Track))
         assertEquals("Album gain", replayGainModeLabel(resources, ReplayGainMode.Album))
-        assertEquals("Dynamic", replayGainModeLabel(resources, ReplayGainMode.Dynamic))
+        assertEquals("Auto", replayGainModeLabel(resources, ReplayGainMode.Auto))
     }
 
     @Test