Rename audioVolume parameter to volume

The new name is consistent with the corresponding parameters to `onVolumeChanged`, `setDeviceVolume` and `onDeviceVolumeChanged`.

PiperOrigin-RevId: 395705288

extensions/cast/src/main/java/com/google/android/exoplayer2/ext/cast/CastPlayer.java

@@ -678,7 +678,7 @@ public final class CastPlayer extends BasePlayer {
 
   /** This method is not supported and does nothing. */
   @Override
-  public void setVolume(float audioVolume) {}
+  public void setVolume(float volume) {}
 
   /** This method is not supported and returns 1. */
   @Override

library/common/src/main/java/com/google/android/exoplayer2/ForwardingPlayer.java

@@ -525,8 +525,8 @@ public class ForwardingPlayer implements Player {
   }
 
   @Override
-  public void setVolume(float audioVolume) {
-    player.setVolume(audioVolume);
+  public void setVolume(float volume) {
+    player.setVolume(volume);
   }
 
   @Override

library/common/src/main/java/com/google/android/exoplayer2/Player.java

@@ -2210,9 +2210,9 @@ public interface Player {
   /**
    * Sets the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).
    *
-   * @param audioVolume Linear output gain to apply to all audio channels.
+   * @param volume Linear output gain to apply to all audio channels.
    */
-  void setVolume(@FloatRange(from = 0) float audioVolume);
+  void setVolume(@FloatRange(from = 0) float volume);
 
   /**
    * Returns the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImpl.java

@@ -1010,7 +1010,7 @@ import java.util.concurrent.CopyOnWriteArraySet;
 
   /** This method is not supported and does nothing. */
   @Override
-  public void setVolume(float audioVolume) {}
+  public void setVolume(float volume) {}
 
   /** This method is not supported and returns 1. */
   @Override

library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java

@@ -452,7 +452,7 @@ public class SimpleExoPlayer extends BasePlayer
   @Nullable private DecoderCounters audioDecoderCounters;
   private int audioSessionId;
   private AudioAttributes audioAttributes;
-  private float audioVolume;
+  private float volume;
   private boolean skipSilenceEnabled;
   private List<Cue> currentCues;
   @Nullable private VideoFrameMetadataListener videoFrameMetadataListener;
@@ -517,7 +517,7 @@ public class SimpleExoPlayer extends BasePlayer
               componentListener);
 
       // Set initial values.
-      audioVolume = 1;
+      volume = 1;
       if (Util.SDK_INT < 21) {
         audioSessionId = initializeKeepSessionIdAudioTrack(C.AUDIO_SESSION_ID_UNSET);
       } else {
@@ -870,24 +870,24 @@ public class SimpleExoPlayer extends BasePlayer
   }
 
   @Override
-  public void setVolume(float audioVolume) {
+  public void setVolume(float volume) {
     verifyApplicationThread();
-    audioVolume = Util.constrainValue(audioVolume, /* min= */ 0, /* max= */ 1);
-    if (this.audioVolume == audioVolume) {
+    volume = Util.constrainValue(volume, /* min= */ 0, /* max= */ 1);
+    if (this.volume == volume) {
       return;
     }
-    this.audioVolume = audioVolume;
+    this.volume = volume;
     sendVolumeToRenderers();
-    analyticsCollector.onVolumeChanged(audioVolume);
+    analyticsCollector.onVolumeChanged(volume);
     // TODO(internal b/187152483): Events should be dispatched via ListenerSet
     for (Listener listener : listeners) {
-      listener.onVolumeChanged(audioVolume);
+      listener.onVolumeChanged(volume);
     }
   }
 
   @Override
   public float getVolume() {
-    return audioVolume;
+    return volume;
   }
 
   @Override
@@ -1772,7 +1772,7 @@ public class SimpleExoPlayer extends BasePlayer
   }
 
   private void sendVolumeToRenderers() {
-    float scaledVolume = audioVolume * audioFocusManager.getVolumeMultiplier();
+    float scaledVolume = volume * audioFocusManager.getVolumeMultiplier();
     sendRendererMessage(TRACK_TYPE_AUDIO, MSG_SET_VOLUME, scaledVolume);
   }
 

testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java

@@ -543,7 +543,7 @@ public class StubExoPlayer extends BasePlayer implements ExoPlayer {
   }
 
   @Override
-  public void setVolume(float audioVolume) {
+  public void setVolume(float volume) {
     throw new UnsupportedOperationException();
   }