diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/AsynchronousMediaCodecAdapter.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/AsynchronousMediaCodecAdapter.java
index 18c7b1c201..6fb49f7cd4 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/AsynchronousMediaCodecAdapter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/AsynchronousMediaCodecAdapter.java
@@ -63,6 +63,18 @@ import com.google.android.exoplayer2.util.Assertions;
     codecStartRunnable.run();
   }
 
+  @Override
+  public void queueInputBuffer(
+      int index, int offset, int size, long presentationTimeUs, int flags) {
+    codec.queueInputBuffer(index, offset, size, presentationTimeUs, flags);
+  }
+
+  @Override
+  public void queueSecureInputBuffer(
+      int index, int offset, MediaCodec.CryptoInfo info, long presentationTimeUs, int flags) {
+    codec.queueSecureInputBuffer(index, offset, info, presentationTimeUs, flags);
+  }
+
   @Override
   public int dequeueInputBufferIndex() {
     if (flushing) {
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/DedicatedThreadAsyncMediaCodecAdapter.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/DedicatedThreadAsyncMediaCodecAdapter.java
index 5130b785d9..d231a247de 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/DedicatedThreadAsyncMediaCodecAdapter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/DedicatedThreadAsyncMediaCodecAdapter.java
@@ -33,8 +33,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
  * A {@link MediaCodecAdapter} that operates the underlying {@link MediaCodec} in asynchronous mode
  * and routes {@link MediaCodec.Callback} callbacks on a dedicated Thread that is managed
  * internally.
- *
- * <p>After creating an instance, you need to call {@link #start()} to start the internal Thread.
  */
 @RequiresApi(23)
 /* package */ final class DedicatedThreadAsyncMediaCodecAdapter extends MediaCodec.Callback
@@ -88,6 +86,22 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     state = STATE_STARTED;
   }
 
+  @Override
+  public void queueInputBuffer(
+      int index, int offset, int size, long presentationTimeUs, int flags) {
+    // This method does not need to be synchronized because it does not interact with the
+    // mediaCodecAsyncCallback.
+    codec.queueInputBuffer(index, offset, size, presentationTimeUs, flags);
+  }
+
+  @Override
+  public void queueSecureInputBuffer(
+      int index, int offset, MediaCodec.CryptoInfo info, long presentationTimeUs, int flags) {
+    // This method does not need to be synchronized because it does not interact with the
+    // mediaCodecAsyncCallback.
+    codec.queueSecureInputBuffer(index, offset, info, presentationTimeUs, flags);
+  }
+
   @Override
   public synchronized int dequeueInputBufferIndex() {
     if (isFlushing()) {
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecAdapter.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecAdapter.java
index 2f347de0ae..ce1ba41533 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecAdapter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecAdapter.java
@@ -65,6 +65,27 @@ import android.media.MediaFormat;
    */
   MediaFormat getOutputFormat();
 
+  /**
+   * Submit an input buffer for decoding.
+   *
+   * <p>The {@code index} must be an input buffer index that has been obtained from a previous call
+   * to {@link #dequeueInputBufferIndex()}.
+   *
+   * @see MediaCodec#queueInputBuffer
+   */
+  void queueInputBuffer(int index, int offset, int size, long presentationTimeUs, int flags);
+
+  /**
+   * Submit an input buffer that is potentially encrypted for decoding.
+   *
+   * <p>The {@code index} must be an input buffer index that has been obtained from a previous call
+   * to {@link #dequeueInputBufferIndex()}.
+   *
+   * @see MediaCodec#queueSecureInputBuffer
+   */
+  void queueSecureInputBuffer(
+      int index, int offset, MediaCodec.CryptoInfo info, long presentationTimeUs, int flags);
+
   /**
    * Flushes the {@code MediaCodecAdapter}.
    *
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
index 760195cfd8..ecb6bbf718 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
@@ -1136,7 +1136,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
         // Do nothing.
       } else {
         codecReceivedEos = true;
-        codec.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
+        codecAdapter.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
         resetInputBuffer();
       }
       codecDrainState = DRAIN_STATE_WAIT_END_OF_STREAM;
@@ -1146,7 +1146,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     if (codecNeedsAdaptationWorkaroundBuffer) {
       codecNeedsAdaptationWorkaroundBuffer = false;
       buffer.data.put(ADAPTATION_WORKAROUND_BUFFER);
-      codec.queueInputBuffer(inputIndex, 0, ADAPTATION_WORKAROUND_BUFFER.length, 0, 0);
+      codecAdapter.queueInputBuffer(inputIndex, 0, ADAPTATION_WORKAROUND_BUFFER.length, 0, 0);
       resetInputBuffer();
       codecReceivedBuffers = true;
       return true;
@@ -1210,7 +1210,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
           // Do nothing.
         } else {
           codecReceivedEos = true;
-          codec.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
+          codecAdapter.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
           resetInputBuffer();
         }
       } catch (CryptoException e) {
@@ -1261,9 +1261,9 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       if (bufferEncrypted) {
         MediaCodec.CryptoInfo cryptoInfo = getFrameworkCryptoInfo(buffer,
             adaptiveReconfigurationBytes);
-        codec.queueSecureInputBuffer(inputIndex, 0, cryptoInfo, presentationTimeUs, 0);
+        codecAdapter.queueSecureInputBuffer(inputIndex, 0, cryptoInfo, presentationTimeUs, 0);
       } else {
-        codec.queueInputBuffer(inputIndex, 0, buffer.data.limit(), presentationTimeUs, 0);
+        codecAdapter.queueInputBuffer(inputIndex, 0, buffer.data.limit(), presentationTimeUs, 0);
       }
       resetInputBuffer();
       codecReceivedBuffers = true;
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MultiLockAsyncMediaCodecAdapter.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MultiLockAsyncMediaCodecAdapter.java
index af26f532c6..d04b9ce1b6 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MultiLockAsyncMediaCodecAdapter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MultiLockAsyncMediaCodecAdapter.java
@@ -46,8 +46,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
  * MediaCodec.Callback} methods will be accessed by the internal Thread. This class is
  * <strong>NOT</strong> generally thread-safe in the sense that its public methods cannot be called
  * by any thread.
- *
- * <p>After creating an instance, you need to call {@link #start()} to start the internal Thread.
  */
 @RequiresApi(23)
 /* package */ final class MultiLockAsyncMediaCodecAdapter extends MediaCodec.Callback
@@ -161,6 +159,22 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     }
   }
 
+  @Override
+  public void queueInputBuffer(
+      int index, int offset, int size, long presentationTimeUs, int flags) {
+    // This method does not need to be synchronized because it is not interacting with
+    // MediaCodec.Callback and dequeueing buffers operations.
+    codec.queueInputBuffer(index, offset, size, presentationTimeUs, flags);
+  }
+
+  @Override
+  public void queueSecureInputBuffer(
+      int index, int offset, MediaCodec.CryptoInfo info, long presentationTimeUs, int flags) {
+    // This method does not need to be synchronized because it is not interacting with
+    // MediaCodec.Callback and dequeueing buffers operations.
+    codec.queueSecureInputBuffer(index, offset, info, presentationTimeUs, flags);
+  }
+
   @Override
   public void flush() {
     synchronized (objectStateLock) {
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/SynchronousMediaCodecAdapter.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/SynchronousMediaCodecAdapter.java
index ee9ab857cc..84d2ba1ba6 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/SynchronousMediaCodecAdapter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/SynchronousMediaCodecAdapter.java
@@ -50,6 +50,18 @@ import android.media.MediaFormat;
     return codec.getOutputFormat();
   }
 
+  @Override
+  public void queueInputBuffer(
+      int index, int offset, int size, long presentationTimeUs, int flags) {
+    codec.queueInputBuffer(index, offset, size, presentationTimeUs, flags);
+  }
+
+  @Override
+  public void queueSecureInputBuffer(
+      int index, int offset, MediaCodec.CryptoInfo info, long presentationTimeUs, int flags) {
+    codec.queueSecureInputBuffer(index, offset, info, presentationTimeUs, flags);
+  }
+
   @Override
   public void flush() {
     codec.flush();