Address comments.

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

@@ -137,7 +137,7 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
   }
 
   @Override
-  public void setOperatingRate(float operatingRate) {
+  public final void setOperatingRate(float operatingRate) {
     onOperatingRateChanged(operatingRate);
   }
 

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

@@ -23,7 +23,6 @@ import android.media.MediaCodec;
 import android.media.MediaCrypto;
 import android.media.MediaFormat;
 import android.media.audiofx.Virtualizer;
-import android.os.Bundle;
 import android.os.Handler;
 import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
@@ -318,12 +317,12 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
 
   @Override
   protected void configureCodec(MediaCodecInfo codecInfo, MediaCodec codec, Format format,
-      MediaCrypto crypto) {
+                                MediaCrypto crypto, float codecOperatingRate) {
     codecMaxInputSize = getCodecMaxInputSize(codecInfo, format, getStreamFormats());
     codecNeedsDiscardChannelsWorkaround = codecNeedsDiscardChannelsWorkaround(codecInfo.name);
     passthroughEnabled = codecInfo.passthrough;
     String codecMimeType = codecInfo.mimeType == null ? MimeTypes.AUDIO_RAW : codecInfo.mimeType;
-    MediaFormat mediaFormat = getMediaFormat(format, codecMimeType, codecMaxInputSize);
+    MediaFormat mediaFormat = getMediaFormat(format, codecMimeType, codecMaxInputSize, codecOperatingRate);
     codec.configure(mediaFormat, /* surface= */ null, crypto, /* flags= */ 0);
     if (passthroughEnabled) {
       // Store the input MIME type if we're using the passthrough codec.
@@ -351,19 +350,6 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
     return this;
   }
 
-  @TargetApi(23)
-  @Override
-  protected void updateCodecOperatingRate(Format format) {
-    if (format.sampleRate == Format.NO_VALUE) {
-      return;
-    }
-    MediaCodec codec = getCodec();
-    float codecOperatingRate = getCodecOperatingRate();
-    Bundle codecParameters = new Bundle();
-    codecParameters.putFloat(MediaFormat.KEY_OPERATING_RATE, format.sampleRate * codecOperatingRate);
-    codec.setParameters(codecParameters);
-  }
-
   @Override
   protected void onCodecInitialized(String name, long initializedTimestampMs,
       long initializationDurationMs) {
@@ -647,10 +633,12 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
    * @param format The format of the media.
    * @param codecMimeType The MIME type handled by the codec.
    * @param codecMaxInputSize The maximum input size supported by the codec.
+   * @param codecOperatingRate
    * @return The framework media format.
    */
   @SuppressLint("InlinedApi")
-  protected MediaFormat getMediaFormat(Format format, String codecMimeType, int codecMaxInputSize) {
+  protected MediaFormat getMediaFormat(Format format, String codecMimeType, int codecMaxInputSize,
+                                       float codecOperatingRate) {
     MediaFormat mediaFormat = new MediaFormat();
     // Set format parameters that should always be set.
     mediaFormat.setString(MediaFormat.KEY_MIME, codecMimeType);
@@ -663,7 +651,6 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
     if (Util.SDK_INT >= 23) {
       mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */);
       if (format.sampleRate != Format.NO_VALUE) {
-        float codecOperatingRate = getCodecOperatingRate();
         mediaFormat.setFloat(
             MediaFormat.KEY_OPERATING_RATE, codecOperatingRate * format.sampleRate);
       }

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java

@@ -274,7 +274,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   private DrmSession<FrameworkMediaCrypto> drmSession;
   private DrmSession<FrameworkMediaCrypto> pendingDrmSession;
   private MediaCodec codec;
-  private float codecOperatingRate = 1;
+  private float codecOperatingRate = 1.0f;
   private @Nullable ArrayDeque<MediaCodecInfo> availableCodecInfos;
   private @Nullable DecoderInitializationException preferredDecoderInitializationException;
   private @Nullable MediaCodecInfo codecInfo;
@@ -386,10 +386,13 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
    * @param codec The {@link MediaCodec} to configure.
    * @param format The format for which the codec is being configured.
    * @param crypto For drm protected playbacks, a {@link MediaCrypto} to use for decryption.
+   * @param codecOperatingRate The {@link MediaFormat#KEY_OPERATING_RATE} to use for configuration.
    * @throws DecoderQueryException If an error occurs querying {@code codecInfo}.
    */
-  protected abstract void configureCodec(MediaCodecInfo codecInfo, MediaCodec codec, Format format,
-      MediaCrypto crypto) throws DecoderQueryException;
+  protected abstract void configureCodec(MediaCodecInfo codecInfo,
+                                         MediaCodec codec, Format format,
+                                         MediaCrypto crypto,
+                                         float codecOperatingRate) throws DecoderQueryException;
 
   protected final void maybeInitCodec() throws ExoPlaybackException {
     if (codec != null || format == null) {
@@ -466,8 +469,6 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     return codecInfo;
   }
 
-  protected final float getCodecOperatingRate() { return codecOperatingRate; }
-
   @Override
   protected void onEnabled(boolean joining) throws ExoPlaybackException {
     decoderCounters = new DecoderCounters();
@@ -485,8 +486,8 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   @Override
   protected void onOperatingRateChanged(float operatingRate) {
     codecOperatingRate = operatingRate;
-    if (codec != null && format != null) {
-      updateCodecOperatingRate(format);
+    if (format != null) {
+      updateCodecOperatingRate(codec, format, operatingRate);
     }
   }
 
@@ -734,7 +735,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       codec = MediaCodec.createByCodecName(name);
       TraceUtil.endSection();
       TraceUtil.beginSection("configureCodec");
-      configureCodec(codecInfo, codec, format, crypto);
+      configureCodec(codecInfo, codec, format, crypto, codecOperatingRate);
       TraceUtil.endSection();
       TraceUtil.beginSection("startCodec");
       codec.start();
@@ -1038,7 +1039,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       }
     } else {
       if (Util.SDK_INT >= 23) {
-        updateCodecOperatingRate(format);
+        updateCodecOperatingRate(codec, format, codecOperatingRate);
       }
     }
   }
@@ -1048,7 +1049,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
    * <p>
    * The default implementation is a no-op.
    */
-  protected void updateCodecOperatingRate(Format format) {
+  protected void updateCodecOperatingRate(MediaCodec codec, Format format, float codecOperatingRate) {
     // Do nothing.
   }
 

library/core/src/main/java/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java

@@ -443,11 +443,14 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
   }
 
   @Override
-  protected void configureCodec(MediaCodecInfo codecInfo, MediaCodec codec, Format format,
-      MediaCrypto crypto) throws DecoderQueryException {
+  protected void configureCodec(MediaCodecInfo codecInfo,
+                                MediaCodec codec,
+                                Format format,
+                                MediaCrypto crypto,
+                                float codecOperatingRate) throws DecoderQueryException {
     codecMaxValues = getCodecMaxValues(codecInfo, format, getStreamFormats());
     MediaFormat mediaFormat = getMediaFormat(format, codecMaxValues, deviceNeedsAutoFrcWorkaround,
-        tunnelingAudioSessionId);
+        tunnelingAudioSessionId, codecOperatingRate);
     if (surface == null) {
       Assertions.checkState(shouldUseDummySurface(codecInfo));
       if (dummySurface == null) {
@@ -501,12 +504,10 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
 
   @TargetApi(23)
   @Override
-  protected void updateCodecOperatingRate(Format format) {
+  protected void updateCodecOperatingRate(MediaCodec codec, Format format, float codecOperatingRate) {
     if (format.frameRate == Format.NO_VALUE) {
       return;
     }
-    MediaCodec codec = getCodec();
-    float codecOperatingRate = getCodecOperatingRate();
     Bundle codecParameters = new Bundle();
     codecParameters.putFloat(MediaFormat.KEY_OPERATING_RATE, format.frameRate * codecOperatingRate);
     codec.setParameters(codecParameters);
@@ -951,6 +952,7 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
    *     logic that negatively impacts ExoPlayer.
    * @param tunnelingAudioSessionId The audio session id to use for tunneling, or {@link
    *     C#AUDIO_SESSION_ID_UNSET} if tunneling should not be enabled.
+   * @param codecOperatingRate
    * @return The framework {@link MediaFormat} that should be used to configure the decoder.
    */
   @SuppressLint("InlinedApi")
@@ -958,7 +960,8 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
       Format format,
       CodecMaxValues codecMaxValues,
       boolean deviceNeedsAutoFrcWorkaround,
-      int tunnelingAudioSessionId) {
+      int tunnelingAudioSessionId,
+      float codecOperatingRate) {
     MediaFormat mediaFormat = new MediaFormat();
     // Set format parameters that should always be set.
     mediaFormat.setString(MediaFormat.KEY_MIME, format.sampleMimeType);
@@ -978,7 +981,6 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
     if (Util.SDK_INT >= 23) {
       mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */);
       if (format.frameRate != Format.NO_VALUE) {
-        float codecOperatingRate = getCodecOperatingRate();
         mediaFormat.setFloat(MediaFormat.KEY_OPERATING_RATE, codecOperatingRate * format.frameRate);
       }
     }

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

@@ -82,14 +82,14 @@ public class DebugRenderersFactory extends DefaultRenderersFactory {
 
     @Override
     protected void configureCodec(MediaCodecInfo codecInfo, MediaCodec codec, Format format,
-        MediaCrypto crypto) throws DecoderQueryException {
+                                  MediaCrypto crypto, float codecOperatingRate) throws DecoderQueryException {
       // If the codec is being initialized whilst the renderer is started, default behavior is to
       // render the first frame (i.e. the keyframe before the current position), then drop frames up
       // to the current playback position. For test runs that place a maximum limit on the number of
       // dropped frames allowed, this is not desired behavior. Hence we skip (rather than drop)
       // frames up to the current playback position [Internal: b/66494991].
       skipToPositionBeforeRenderingFirstFrame = getState() == Renderer.STATE_STARTED;
-      super.configureCodec(codecInfo, codec, format, crypto);
+      super.configureCodec(codecInfo, codec, format, crypto, codecOperatingRate);
     }
 
     @Override