Move AudioMixer classes from transformer.audio to transformer package.

Transformer convention has been to avoid splitting into packages unless
necessary.

See https://jlbp.dev/JLBP-2: "Prefer fewer packages over more packages
to avoid unnecessarily publicizing internal details, since any
dependency across package boundaries needs to be public.

PiperOrigin-RevId: 503463294

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/AudioMixer.java → library/transformer/src/main/java/com/google/android/exoplayer2/transformer/AudioMixer.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import com.google.android.exoplayer2.audio.AudioProcessor.AudioFormat;
 import com.google.android.exoplayer2.audio.AudioProcessor.UnhandledAudioFormatException;

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/AudioMixerImpl.java → library/transformer/src/main/java/com/google/android/exoplayer2/transformer/AudioMixerImpl.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import static com.google.android.exoplayer2.util.Assertions.checkArgument;
 import static com.google.android.exoplayer2.util.Assertions.checkNotNull;

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/AudioMixingAlgorithm.java → library/transformer/src/main/java/com/google/android/exoplayer2/transformer/AudioMixingAlgorithm.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import android.annotation.SuppressLint;
 import com.google.android.exoplayer2.C;

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/ChannelMixingMatrix.java → library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ChannelMixingMatrix.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import static com.google.android.exoplayer2.util.Assertions.checkArgument;
 

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/FloatAudioMixingAlgorithm.java → library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FloatAudioMixingAlgorithm.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import static com.google.android.exoplayer2.util.Assertions.checkArgument;
 

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/audio/package-info.java

-/*
- * Copyright 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-@NonNullApi
-package com.google.android.exoplayer2.transformer.audio;
-
-import com.google.android.exoplayer2.util.NonNullApi;

library/transformer/src/test/java/com/google/android/exoplayer2/transformer/audio/AudioMixerImplTest.java → library/transformer/src/test/java/com/google/android/exoplayer2/transformer/AudioMixerImplTest.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import static com.google.common.truth.Truth.assertThat;
 

library/transformer/src/test/java/com/google/android/exoplayer2/transformer/audio/FloatAudioMixingAlgorithmTest.java → library/transformer/src/test/java/com/google/android/exoplayer2/transformer/FloatAudioMixingAlgorithmTest.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.transformer.audio;
+package com.google.android.exoplayer2.transformer;
 
 import static com.google.common.truth.Truth.assertThat;