Improve commands Javadoc

PiperOrigin-RevId: 364600438

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

@@ -1083,13 +1083,13 @@ public interface Player {
   int COMMAND_PLAY_PAUSE = 1;
   int COMMAND_PLAY_PAUSE = 1;
   /** Command to prepare the player, stop playback or release the player. */
   /** Command to prepare the player, stop playback or release the player. */
   int COMMAND_PREPARE_STOP_RELEASE = 2;
   int COMMAND_PREPARE_STOP_RELEASE = 2;
-  /** Command to seek into the current {@link MediaItem}. */
+  /** Command to seek into the current window. */
   int COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM = 3;
   int COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM = 3;
-  /** Command to seek to the next {@link MediaItem} in the playlist. */
+  /** Command to seek to the default position of the next window. */
   int COMMAND_SEEK_TO_NEXT_MEDIA_ITEM = 4;
   int COMMAND_SEEK_TO_NEXT_MEDIA_ITEM = 4;
-  /** Command to seek to the previous {@link MediaItem} in the playlist. */
+  /** Command to seek to the default position of the previous window. */
   int COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM = 5;
   int COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM = 5;
-  /** Command to seek to a {@link MediaItem} in the playlist. */
+  /** Command to seek anywhere in any window. */
   int COMMAND_SEEK_TO_MEDIA_ITEM = 6;
   int COMMAND_SEEK_TO_MEDIA_ITEM = 6;
   /** Command to set the playback speed and pitch. */
   /** Command to set the playback speed and pitch. */
   int COMMAND_SET_SPEED_AND_PITCH = 7;
   int COMMAND_SET_SPEED_AND_PITCH = 7;
@@ -1097,9 +1097,9 @@ public interface Player {
   int COMMAND_SET_SHUFFLE_MODE = 8;
   int COMMAND_SET_SHUFFLE_MODE = 8;
   /** Command to set the repeat mode. */
   /** Command to set the repeat mode. */
   int COMMAND_SET_REPEAT_MODE = 9;
   int COMMAND_SET_REPEAT_MODE = 9;
-  /** Command to get the current {@link MediaItem}. */
+  /** Command to get the {@link MediaItem} of the current window. */
   int COMMAND_GET_CURRENT_MEDIA_ITEM = 10;
   int COMMAND_GET_CURRENT_MEDIA_ITEM = 10;
-  /** Command to get the {@link MediaItem MediaItems} in the playlist. */
+  /** Command to get the current timeline and its {@link MediaItem MediaItems}. */
   int COMMAND_GET_MEDIA_ITEMS = 11;
   int COMMAND_GET_MEDIA_ITEMS = 11;
   /** Command to get the {@link MediaItem MediaItems} metadata. */
   /** Command to get the {@link MediaItem MediaItems} metadata. */
   int COMMAND_GET_MEDIA_ITEMS_METADATA = 12;
   int COMMAND_GET_MEDIA_ITEMS_METADATA = 12;
@@ -1107,15 +1107,15 @@ public interface Player {
   int COMMAND_CHANGE_MEDIA_ITEMS = 13;
   int COMMAND_CHANGE_MEDIA_ITEMS = 13;
   /** Command to get the player volume. */
   /** Command to get the player volume. */
   int COMMAND_GET_VOLUME = 14;
   int COMMAND_GET_VOLUME = 14;
-  /** Command to get the device volume. */
+  /** Command to get the device volume and whether it is muted. */
   int COMMAND_GET_DEVICE_VOLUME = 15;
   int COMMAND_GET_DEVICE_VOLUME = 15;
   /** Command to set the player volume. */
   /** Command to set the player volume. */
   int COMMAND_SET_VOLUME = 16;
   int COMMAND_SET_VOLUME = 16;
-  /** Command to set the device volume. */
+  /** Command to set the device volume and mute it. */
   int COMMAND_SET_DEVICE_VOLUME = 17;
   int COMMAND_SET_DEVICE_VOLUME = 17;
-  /** Command to increment or decrement the device volume. */
+  /** Command to increase and decrease the device volume and mute it. */
   int COMMAND_ADJUST_DEVICE_VOLUME = 18;
   int COMMAND_ADJUST_DEVICE_VOLUME = 18;
-  /** Command to set the surface on which to render the video. */
+  /** Command to set and clear the surface on which to render the video. */
   int COMMAND_SET_VIDEO_SURFACE = 19;
   int COMMAND_SET_VIDEO_SURFACE = 19;
   /** Command to get the text that should currently be displayed by the player. */
   /** Command to get the text that should currently be displayed by the player. */
   int COMMAND_GET_TEXT = 20;
   int COMMAND_GET_TEXT = 20;
@@ -1323,6 +1323,9 @@ public interface Player {
    * <p>Executing a command that is not available (for example, calling {@link #next()} if {@link
    * <p>Executing a command that is not available (for example, calling {@link #next()} if {@link
    * #COMMAND_SEEK_TO_NEXT_MEDIA_ITEM} is unavailable) is a no-op.
    * #COMMAND_SEEK_TO_NEXT_MEDIA_ITEM} is unavailable) is a no-op.
    *
    *
+   * <p>{@link #COMMAND_SEEK_TO_NEXT_MEDIA_ITEM} and {@link #COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM}
+   * are unavailable if there is no such {@link MediaItem}.
+   *
    * @param command A {@link Command}.
    * @param command A {@link Command}.
    * @return Whether the {@link Command} is available.
    * @return Whether the {@link Command} is available.
    * @see EventListener#onAvailableCommandsChanged(Commands)
    * @see EventListener#onAvailableCommandsChanged(Commands)