Make ToInt16AudioProcessor available in `common.audio`.

PiperOrigin-RevId: 501575932

library/core/src/main/java/com/google/android/exoplayer2/audio/ResamplingAudioProcessor.java → library/common/src/main/java/com/google/android/exoplayer2/audio/ToInt16PcmAudioProcessor.java

@@ -34,7 +34,7 @@ import java.nio.ByteBuffer;
  *   <li>{@link C#ENCODING_PCM_FLOAT}
  * </ul>
  */
-/* package */ final class ResamplingAudioProcessor extends BaseAudioProcessor {
+public final class ToInt16PcmAudioProcessor extends BaseAudioProcessor {
 
   @Override
   @CanIgnoreReturnValue

library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

@@ -531,7 +531,7 @@ public final class DefaultAudioSink implements AudioSink {
     trimmingAudioProcessor = new TrimmingAudioProcessor();
     toIntPcmAvailableAudioProcessors =
         ImmutableList.of(
-            new ResamplingAudioProcessor(), channelMappingAudioProcessor, trimmingAudioProcessor);
+            new ToInt16PcmAudioProcessor(), channelMappingAudioProcessor, trimmingAudioProcessor);
     toFloatPcmAvailableAudioProcessors = ImmutableList.of(new FloatResamplingAudioProcessor());
     volume = 1f;
     audioAttributes = AudioAttributes.DEFAULT;