Get decoder buffers into the right place

PiperOrigin-RevId: 404876228

extensions/av1/proguard-rules.txt

@@ -6,6 +6,6 @@
 }
 
 # Some members of this class are being accessed from native methods. Keep them unobfuscated.
--keep class com.google.android.exoplayer2.video.VideoDecoderOutputBuffer {
+-keep class com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer {
   *;
 }

extensions/av1/src/main/java/com/google/android/exoplayer2/ext/av1/Gav1Decoder.java

@@ -24,15 +24,14 @@ import androidx.annotation.VisibleForTesting;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Util;
-import com.google.android.exoplayer2.video.VideoDecoderInputBuffer;
-import com.google.android.exoplayer2.video.VideoDecoderOutputBuffer;
 import java.nio.ByteBuffer;
 
 /** Gav1 decoder. */
 @VisibleForTesting(otherwise = PACKAGE_PRIVATE)
 public final class Gav1Decoder
-    extends SimpleDecoder<VideoDecoderInputBuffer, VideoDecoderOutputBuffer, Gav1DecoderException> {
+    extends SimpleDecoder<DecoderInputBuffer, VideoDecoderOutputBuffer, Gav1DecoderException> {
 
   private static final int GAV1_ERROR = 0;
   private static final int GAV1_OK = 1;
@@ -56,9 +55,7 @@ public final class Gav1Decoder
   public Gav1Decoder(
       int numInputBuffers, int numOutputBuffers, int initialInputBufferSize, int threads)
       throws Gav1DecoderException {
-    super(
-        new VideoDecoderInputBuffer[numInputBuffers],
-        new VideoDecoderOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new VideoDecoderOutputBuffer[numOutputBuffers]);
     if (!Gav1Library.isAvailable()) {
       throw new Gav1DecoderException("Failed to load decoder native library.");
     }
@@ -86,8 +83,8 @@ public final class Gav1Decoder
   }
 
   @Override
-  protected VideoDecoderInputBuffer createInputBuffer() {
-    return new VideoDecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
+  protected DecoderInputBuffer createInputBuffer() {
+    return new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
   }
 
   @Override
@@ -98,7 +95,7 @@ public final class Gav1Decoder
   @Override
   @Nullable
   protected Gav1DecoderException decode(
-      VideoDecoderInputBuffer inputBuffer, VideoDecoderOutputBuffer outputBuffer, boolean reset) {
+      DecoderInputBuffer inputBuffer, VideoDecoderOutputBuffer outputBuffer, boolean reset) {
     ByteBuffer inputData = Util.castNonNull(inputBuffer.data);
     int inputSize = inputData.limit();
     if (gav1Decode(gav1DecoderContext, inputData, inputSize) == GAV1_ERROR) {

extensions/av1/src/main/java/com/google/android/exoplayer2/ext/av1/Libgav1VideoRenderer.java

@@ -25,11 +25,11 @@ import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.RendererCapabilities;
 import com.google.android.exoplayer2.decoder.CryptoConfig;
 import com.google.android.exoplayer2.decoder.DecoderReuseEvaluation;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.TraceUtil;
 import com.google.android.exoplayer2.util.Util;
 import com.google.android.exoplayer2.video.DecoderVideoRenderer;
-import com.google.android.exoplayer2.video.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.video.VideoRendererEventListener;
 
 /** Decodes and renders video using libgav1 decoder. */

extensions/av1/src/main/jni/gav1_jni.cc

@@ -537,7 +537,7 @@ DECODER_FUNC(jlong, gav1Init, jint threads) {
 
   // Populate JNI References.
   const jclass outputBufferClass = env->FindClass(
-      "com/google/android/exoplayer2/video/VideoDecoderOutputBuffer");
+      "com/google/android/exoplayer2/decoder/VideoDecoderOutputBuffer");
   context->decoder_private_field =
       env->GetFieldID(outputBufferClass, "decoderPrivate", "I");
   context->output_mode_field = env->GetFieldID(outputBufferClass, "mode", "I");

extensions/ffmpeg/src/main/java/com/google/android/exoplayer2/ext/ffmpeg/FfmpegAudioDecoder.java

@@ -20,7 +20,7 @@ import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
-import com.google.android.exoplayer2.decoder.SimpleOutputBuffer;
+import com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.ParsableByteArray;
@@ -30,7 +30,7 @@ import java.util.List;
 
 /** FFmpeg audio decoder. */
 /* package */ final class FfmpegAudioDecoder
-    extends SimpleDecoder<DecoderInputBuffer, SimpleOutputBuffer, FfmpegDecoderException> {
+    extends SimpleDecoder<DecoderInputBuffer, SimpleDecoderOutputBuffer, FfmpegDecoderException> {
 
   // Output buffer sizes when decoding PCM mu-law streams, which is the maximum FFmpeg outputs.
   private static final int OUTPUT_BUFFER_SIZE_16BIT = 65536;
@@ -56,7 +56,7 @@ import java.util.List;
       int initialInputBufferSize,
       boolean outputFloat)
       throws FfmpegDecoderException {
-    super(new DecoderInputBuffer[numInputBuffers], new SimpleOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new SimpleDecoderOutputBuffer[numOutputBuffers]);
     if (!FfmpegLibrary.isAvailable()) {
       throw new FfmpegDecoderException("Failed to load decoder native libraries.");
     }
@@ -86,8 +86,8 @@ import java.util.List;
   }
 
   @Override
-  protected SimpleOutputBuffer createOutputBuffer() {
-    return new SimpleOutputBuffer(this::releaseOutputBuffer);
+  protected SimpleDecoderOutputBuffer createOutputBuffer() {
+    return new SimpleDecoderOutputBuffer(this::releaseOutputBuffer);
   }
 
   @Override
@@ -98,7 +98,7 @@ import java.util.List;
   @Override
   @Nullable
   protected FfmpegDecoderException decode(
-      DecoderInputBuffer inputBuffer, SimpleOutputBuffer outputBuffer, boolean reset) {
+      DecoderInputBuffer inputBuffer, SimpleDecoderOutputBuffer outputBuffer, boolean reset) {
     if (reset) {
       nativeContext = ffmpegReset(nativeContext, extraData);
       if (nativeContext == 0) {

extensions/ffmpeg/src/main/java/com/google/android/exoplayer2/ext/ffmpeg/FfmpegVideoRenderer.java

@@ -27,12 +27,12 @@ import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.RendererCapabilities;
 import com.google.android.exoplayer2.decoder.CryptoConfig;
 import com.google.android.exoplayer2.decoder.Decoder;
+import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.DecoderReuseEvaluation;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.TraceUtil;
 import com.google.android.exoplayer2.util.Util;
 import com.google.android.exoplayer2.video.DecoderVideoRenderer;
-import com.google.android.exoplayer2.video.VideoDecoderInputBuffer;
-import com.google.android.exoplayer2.video.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.video.VideoRendererEventListener;
 
 // TODO: Remove the NOTE below.
@@ -94,7 +94,7 @@ public final class FfmpegVideoRenderer extends DecoderVideoRenderer {
 
   @SuppressWarnings("nullness:return")
   @Override
-  protected Decoder<VideoDecoderInputBuffer, VideoDecoderOutputBuffer, FfmpegDecoderException>
+  protected Decoder<DecoderInputBuffer, VideoDecoderOutputBuffer, FfmpegDecoderException>
       createDecoder(Format format, @Nullable CryptoConfig cryptoConfig)
           throws FfmpegDecoderException {
     TraceUtil.beginSection("createFfmpegVideoDecoder");

extensions/flac/src/main/java/com/google/android/exoplayer2/ext/flac/FlacDecoder.java

@@ -23,7 +23,7 @@ import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.ParserException;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
-import com.google.android.exoplayer2.decoder.SimpleOutputBuffer;
+import com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer;
 import com.google.android.exoplayer2.extractor.FlacStreamMetadata;
 import com.google.android.exoplayer2.util.Util;
 import java.io.IOException;
@@ -33,7 +33,7 @@ import java.util.List;
 /** Flac decoder. */
 @VisibleForTesting(otherwise = PACKAGE_PRIVATE)
 public final class FlacDecoder
-    extends SimpleDecoder<DecoderInputBuffer, SimpleOutputBuffer, FlacDecoderException> {
+    extends SimpleDecoder<DecoderInputBuffer, SimpleDecoderOutputBuffer, FlacDecoderException> {
 
   private final FlacStreamMetadata streamMetadata;
   private final FlacDecoderJni decoderJni;
@@ -55,7 +55,7 @@ public final class FlacDecoder
       int maxInputBufferSize,
       List<byte[]> initializationData)
       throws FlacDecoderException {
-    super(new DecoderInputBuffer[numInputBuffers], new SimpleOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new SimpleDecoderOutputBuffer[numOutputBuffers]);
     if (initializationData.size() != 1) {
       throw new FlacDecoderException("Initialization data must be of length 1");
     }
@@ -86,8 +86,8 @@ public final class FlacDecoder
   }
 
   @Override
-  protected SimpleOutputBuffer createOutputBuffer() {
-    return new SimpleOutputBuffer(this::releaseOutputBuffer);
+  protected SimpleDecoderOutputBuffer createOutputBuffer() {
+    return new SimpleDecoderOutputBuffer(this::releaseOutputBuffer);
   }
 
   @Override
@@ -98,7 +98,7 @@ public final class FlacDecoder
   @Override
   @Nullable
   protected FlacDecoderException decode(
-      DecoderInputBuffer inputBuffer, SimpleOutputBuffer outputBuffer, boolean reset) {
+      DecoderInputBuffer inputBuffer, SimpleDecoderOutputBuffer outputBuffer, boolean reset) {
     if (reset) {
       decoderJni.flush();
     }

extensions/opus/proguard-rules.txt

@@ -6,6 +6,6 @@
 }
 
 # Some members of this class are being accessed from native methods. Keep them unobfuscated.
--keep class com.google.android.exoplayer2.decoder.SimpleOutputBuffer {
+-keep class com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer {
     *;
 }

extensions/opus/src/main/java/com/google/android/exoplayer2/ext/opus/OpusDecoder.java

@@ -26,7 +26,7 @@ import com.google.android.exoplayer2.decoder.CryptoException;
 import com.google.android.exoplayer2.decoder.CryptoInfo;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
-import com.google.android.exoplayer2.decoder.SimpleOutputBuffer;
+import com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Util;
 import java.nio.ByteBuffer;
@@ -35,7 +35,7 @@ import java.util.List;
 /** Opus decoder. */
 @VisibleForTesting(otherwise = PACKAGE_PRIVATE)
 public final class OpusDecoder
-    extends SimpleDecoder<DecoderInputBuffer, SimpleOutputBuffer, OpusDecoderException> {
+    extends SimpleDecoder<DecoderInputBuffer, SimpleDecoderOutputBuffer, OpusDecoderException> {
 
   private static final int NO_ERROR = 0;
   private static final int DECODE_ERROR = -1;
@@ -73,7 +73,7 @@ public final class OpusDecoder
       @Nullable CryptoConfig cryptoConfig,
       boolean outputFloat)
       throws OpusDecoderException {
-    super(new DecoderInputBuffer[numInputBuffers], new SimpleOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new SimpleDecoderOutputBuffer[numOutputBuffers]);
     if (!OpusLibrary.isAvailable()) {
       throw new OpusDecoderException("Failed to load decoder native libraries");
     }
@@ -147,8 +147,8 @@ public final class OpusDecoder
   }
 
   @Override
-  protected SimpleOutputBuffer createOutputBuffer() {
-    return new SimpleOutputBuffer(this::releaseOutputBuffer);
+  protected SimpleDecoderOutputBuffer createOutputBuffer() {
+    return new SimpleDecoderOutputBuffer(this::releaseOutputBuffer);
   }
 
   @Override
@@ -159,7 +159,7 @@ public final class OpusDecoder
   @Override
   @Nullable
   protected OpusDecoderException decode(
-      DecoderInputBuffer inputBuffer, SimpleOutputBuffer outputBuffer, boolean reset) {
+      DecoderInputBuffer inputBuffer, SimpleDecoderOutputBuffer outputBuffer, boolean reset) {
     if (reset) {
       opusReset(nativeDecoderContext);
       // When seeking to 0, skip number of samples as specified in opus header. When seeking to
@@ -239,14 +239,14 @@ public final class OpusDecoder
       long timeUs,
       ByteBuffer inputBuffer,
       int inputSize,
-      SimpleOutputBuffer outputBuffer);
+      SimpleDecoderOutputBuffer outputBuffer);
 
   private native int opusSecureDecode(
       long decoder,
       long timeUs,
       ByteBuffer inputBuffer,
       int inputSize,
-      SimpleOutputBuffer outputBuffer,
+      SimpleDecoderOutputBuffer outputBuffer,
       int sampleRate,
       @Nullable CryptoConfig mediaCrypto,
       int inputMode,

extensions/opus/src/main/jni/opus_jni.cc

@@ -87,7 +87,7 @@ DECODER_FUNC(jlong, opusInit, jint sampleRate, jint channelCount,
 
   // Populate JNI References.
   const jclass outputBufferClass = env->FindClass(
-      "com/google/android/exoplayer2/decoder/SimpleOutputBuffer");
+      "com/google/android/exoplayer2/decoder/SimpleDecoderOutputBuffer");
   outputBufferInit =
       env->GetMethodID(outputBufferClass, "init", "(JI)Ljava/nio/ByteBuffer;");
 

extensions/vp9/proguard-rules.txt

@@ -6,7 +6,7 @@
 }
 
 # Some members of this class are being accessed from native methods. Keep them unobfuscated.
--keep class com.google.android.exoplayer2.video.VideoDecoderOutputBuffer {
+-keep class com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer {
     *;
 }
 

extensions/vp9/src/main/java/com/google/android/exoplayer2/ext/vp9/LibvpxVideoRenderer.java

@@ -26,10 +26,10 @@ import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.RendererCapabilities;
 import com.google.android.exoplayer2.decoder.CryptoConfig;
 import com.google.android.exoplayer2.decoder.DecoderReuseEvaluation;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.TraceUtil;
 import com.google.android.exoplayer2.video.DecoderVideoRenderer;
-import com.google.android.exoplayer2.video.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.video.VideoRendererEventListener;
 
 /** Decodes and renders video using the native VP9 decoder. */

extensions/vp9/src/main/java/com/google/android/exoplayer2/ext/vp9/VpxDecoder.java

@@ -26,16 +26,15 @@ import com.google.android.exoplayer2.decoder.CryptoException;
 import com.google.android.exoplayer2.decoder.CryptoInfo;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Util;
-import com.google.android.exoplayer2.video.VideoDecoderInputBuffer;
-import com.google.android.exoplayer2.video.VideoDecoderOutputBuffer;
 import java.nio.ByteBuffer;
 
 /** Vpx decoder. */
 @VisibleForTesting(otherwise = PACKAGE_PRIVATE)
 public final class VpxDecoder
-    extends SimpleDecoder<VideoDecoderInputBuffer, VideoDecoderOutputBuffer, VpxDecoderException> {
+    extends SimpleDecoder<DecoderInputBuffer, VideoDecoderOutputBuffer, VpxDecoderException> {
 
   // These constants should match the codes returned from vpxDecode and vpxSecureDecode functions in
   // https://github.com/google/ExoPlayer/blob/release-v2/extensions/vp9/src/main/jni/vpx_jni.cc.
@@ -68,9 +67,7 @@ public final class VpxDecoder
       @Nullable CryptoConfig cryptoConfig,
       int threads)
       throws VpxDecoderException {
-    super(
-        new VideoDecoderInputBuffer[numInputBuffers],
-        new VideoDecoderOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new VideoDecoderOutputBuffer[numOutputBuffers]);
     if (!VpxLibrary.isAvailable()) {
       throw new VpxDecoderException("Failed to load decoder native libraries.");
     }
@@ -92,8 +89,8 @@ public final class VpxDecoder
   }
 
   @Override
-  protected VideoDecoderInputBuffer createInputBuffer() {
-    return new VideoDecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
+  protected DecoderInputBuffer createInputBuffer() {
+    return new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
   }
 
   @Override
@@ -119,7 +116,7 @@ public final class VpxDecoder
   @Override
   @Nullable
   protected VpxDecoderException decode(
-      VideoDecoderInputBuffer inputBuffer, VideoDecoderOutputBuffer outputBuffer, boolean reset) {
+      DecoderInputBuffer inputBuffer, VideoDecoderOutputBuffer outputBuffer, boolean reset) {
     if (reset && lastSupplementalData != null) {
       // Don't propagate supplemental data across calls to flush the decoder.
       lastSupplementalData.clear();

extensions/vp9/src/main/jni/vpx_jni.cc

@@ -479,7 +479,7 @@ DECODER_FUNC(jlong, vpxInit, jboolean disableLoopFilter,
 
   // Populate JNI References.
   const jclass outputBufferClass = env->FindClass(
-      "com/google/android/exoplayer2/video/VideoDecoderOutputBuffer");
+      "com/google/android/exoplayer2/decoder/VideoDecoderOutputBuffer");
   initForYuvFrame =
       env->GetMethodID(outputBufferClass, "initForYuvFrame", "(IIIII)Z");
   initForPrivateFrame =

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

@@ -44,7 +44,7 @@ import com.google.android.exoplayer2.decoder.DecoderCounters;
 import com.google.android.exoplayer2.decoder.DecoderException;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.DecoderReuseEvaluation;
-import com.google.android.exoplayer2.decoder.SimpleOutputBuffer;
+import com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer;
 import com.google.android.exoplayer2.drm.DrmSession;
 import com.google.android.exoplayer2.drm.DrmSession.DrmSessionException;
 import com.google.android.exoplayer2.source.SampleStream.ReadDataResult;
@@ -82,7 +82,10 @@ import java.lang.annotation.RetentionPolicy;
  */
 public abstract class DecoderAudioRenderer<
         T extends
-            Decoder<DecoderInputBuffer, ? extends SimpleOutputBuffer, ? extends DecoderException>>
+            Decoder<
+                    DecoderInputBuffer,
+                    ? extends SimpleDecoderOutputBuffer,
+                    ? extends DecoderException>>
     extends BaseRenderer implements MediaClock {
 
   private static final String TAG = "DecoderAudioRenderer";
@@ -124,7 +127,7 @@ public abstract class DecoderAudioRenderer<
   @Nullable private T decoder;
 
   @Nullable private DecoderInputBuffer inputBuffer;
-  @Nullable private SimpleOutputBuffer outputBuffer;
+  @Nullable private SimpleDecoderOutputBuffer outputBuffer;
   @Nullable private DrmSession decoderDrmSession;
   @Nullable private DrmSession sourceDrmSession;
 
@@ -456,6 +459,7 @@ public abstract class DecoderAudioRenderer<
           return false;
         }
         inputBuffer.flip();
+        inputBuffer.format = inputFormat;
         onQueueInputBuffer(inputBuffer);
         decoder.queueInputBuffer(inputBuffer);
         decoderReceivedBuffers = true;

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

@@ -42,6 +42,7 @@ import com.google.android.exoplayer2.decoder.DecoderCounters;
 import com.google.android.exoplayer2.decoder.DecoderException;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.DecoderReuseEvaluation;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.drm.DrmSession;
 import com.google.android.exoplayer2.drm.DrmSession.DrmSessionException;
 import com.google.android.exoplayer2.source.SampleStream.ReadDataResult;
@@ -108,10 +109,10 @@ public abstract class DecoderVideoRenderer extends BaseRenderer {
 
   @Nullable
   private Decoder<
-          VideoDecoderInputBuffer, ? extends VideoDecoderOutputBuffer, ? extends DecoderException>
+          DecoderInputBuffer, ? extends VideoDecoderOutputBuffer, ? extends DecoderException>
       decoder;
 
-  private VideoDecoderInputBuffer inputBuffer;
+  private DecoderInputBuffer inputBuffer;
   private VideoDecoderOutputBuffer outputBuffer;
   @VideoOutputMode private int outputMode;
   @Nullable private Object output;
@@ -415,7 +416,7 @@ public abstract class DecoderVideoRenderer extends BaseRenderer {
    *
    * @param buffer The buffer that will be queued.
    */
-  protected void onQueueInputBuffer(VideoDecoderInputBuffer buffer) {
+  protected void onQueueInputBuffer(DecoderInputBuffer buffer) {
     // Do nothing.
   }
 
@@ -536,7 +537,7 @@ public abstract class DecoderVideoRenderer extends BaseRenderer {
    * @throws DecoderException If an error occurred creating a suitable decoder.
    */
   protected abstract Decoder<
-          VideoDecoderInputBuffer, ? extends VideoDecoderOutputBuffer, ? extends DecoderException>
+          DecoderInputBuffer, ? extends VideoDecoderOutputBuffer, ? extends DecoderException>
       createDecoder(Format format, @Nullable CryptoConfig cryptoConfig) throws DecoderException;
 
   /**

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

@@ -20,6 +20,7 @@ import android.opengl.GLES20;
 import android.opengl.GLSurfaceView;
 import android.util.AttributeSet;
 import androidx.annotation.Nullable;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.GlUtil;
 import java.nio.ByteBuffer;

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

-/*
- * Copyright (C) 2019 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.
- */
-package com.google.android.exoplayer2.video;
-
-import androidx.annotation.Nullable;
-import com.google.android.exoplayer2.Format;
-import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
-
-/** Input buffer to a video decoder. */
-public class VideoDecoderInputBuffer extends DecoderInputBuffer {
-
-  @Nullable public Format format;
-
-  /**
-   * Creates a new instance.
-   *
-   * @param bufferReplacementMode Determines the behavior of {@link #ensureSpaceForWrite(int)}. One
-   *     of {@link #BUFFER_REPLACEMENT_MODE_DISABLED}, {@link #BUFFER_REPLACEMENT_MODE_NORMAL} and
-   *     {@link #BUFFER_REPLACEMENT_MODE_DIRECT}.
-   */
-  public VideoDecoderInputBuffer(@BufferReplacementMode int bufferReplacementMode) {
-    super(bufferReplacementMode);
-  }
-
-  /**
-   * Creates a new instance.
-   *
-   * @param bufferReplacementMode Determines the behavior of {@link #ensureSpaceForWrite(int)}. One
-   *     of {@link #BUFFER_REPLACEMENT_MODE_DISABLED}, {@link #BUFFER_REPLACEMENT_MODE_NORMAL} and
-   *     {@link #BUFFER_REPLACEMENT_MODE_DIRECT}.
-   * @param paddingSize If non-zero, {@link #ensureSpaceForWrite(int)} will ensure that the buffer
-   *     is this number of bytes larger than the requested length. This can be useful for decoders
-   *     that consume data in fixed size blocks, for efficiency. Setting the padding size to the
-   *     decoder's fixed read size is necessary to prevent such a decoder from trying to read beyond
-   *     the end of the buffer.
-   */
-  public VideoDecoderInputBuffer(
-      @BufferReplacementMode int bufferReplacementMode, int paddingSize) {
-    super(bufferReplacementMode, paddingSize);
-  }
-}

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

@@ -15,6 +15,8 @@
  */
 package com.google.android.exoplayer2.video;
 
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
+
 /** Renders the {@link VideoDecoderOutputBuffer}. */
 public interface VideoDecoderOutputBufferRenderer {
 

library/core/src/test/java/com/google/android/exoplayer2/audio/DecoderAudioRendererTest.java

@@ -34,7 +34,7 @@ import com.google.android.exoplayer2.decoder.CryptoConfig;
 import com.google.android.exoplayer2.decoder.DecoderException;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
-import com.google.android.exoplayer2.decoder.SimpleOutputBuffer;
+import com.google.android.exoplayer2.decoder.SimpleDecoderOutputBuffer;
 import com.google.android.exoplayer2.drm.DrmSessionEventListener;
 import com.google.android.exoplayer2.drm.DrmSessionManager;
 import com.google.android.exoplayer2.testutil.FakeSampleStream;
@@ -133,10 +133,10 @@ public class DecoderAudioRendererTest {
   }
 
   private static final class FakeDecoder
-      extends SimpleDecoder<DecoderInputBuffer, SimpleOutputBuffer, DecoderException> {
+      extends SimpleDecoder<DecoderInputBuffer, SimpleDecoderOutputBuffer, DecoderException> {
 
     public FakeDecoder() {
-      super(new DecoderInputBuffer[1], new SimpleOutputBuffer[1]);
+      super(new DecoderInputBuffer[1], new SimpleDecoderOutputBuffer[1]);
     }
 
     @Override
@@ -150,8 +150,8 @@ public class DecoderAudioRendererTest {
     }
 
     @Override
-    protected SimpleOutputBuffer createOutputBuffer() {
-      return new SimpleOutputBuffer(this::releaseOutputBuffer);
+    protected SimpleDecoderOutputBuffer createOutputBuffer() {
+      return new SimpleDecoderOutputBuffer(this::releaseOutputBuffer);
     }
 
     @Override
@@ -161,7 +161,7 @@ public class DecoderAudioRendererTest {
 
     @Override
     protected DecoderException decode(
-        DecoderInputBuffer inputBuffer, SimpleOutputBuffer outputBuffer, boolean reset) {
+        DecoderInputBuffer inputBuffer, SimpleDecoderOutputBuffer outputBuffer, boolean reset) {
       if (inputBuffer.isEndOfStream()) {
         outputBuffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM);
       }

library/core/src/test/java/com/google/android/exoplayer2/video/DecoderVideoRendererTest.java

@@ -38,6 +38,7 @@ import com.google.android.exoplayer2.decoder.CryptoConfig;
 import com.google.android.exoplayer2.decoder.DecoderException;
 import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.decoder.SimpleDecoder;
+import com.google.android.exoplayer2.decoder.VideoDecoderOutputBuffer;
 import com.google.android.exoplayer2.drm.DrmSessionEventListener;
 import com.google.android.exoplayer2.drm.DrmSessionManager;
 import com.google.android.exoplayer2.testutil.FakeSampleStream;
@@ -108,7 +109,7 @@ public final class DecoderVideoRendererTest {
           }
 
           @Override
-          protected void onQueueInputBuffer(VideoDecoderInputBuffer buffer) {
+          protected void onQueueInputBuffer(DecoderInputBuffer buffer) {
             // Decoding is done on a background thread we have no control about from the test.
             // Ensure the background calls are predictably serialized by waiting for them to finish:
             //  1. Register queued input buffers here.
@@ -125,17 +126,16 @@ public final class DecoderVideoRendererTest {
 
           @Override
           protected SimpleDecoder<
-                  VideoDecoderInputBuffer,
+                  DecoderInputBuffer,
                   ? extends VideoDecoderOutputBuffer,
                   ? extends DecoderException>
               createDecoder(Format format, @Nullable CryptoConfig cryptoConfig) {
             return new SimpleDecoder<
-                VideoDecoderInputBuffer, VideoDecoderOutputBuffer, DecoderException>(
-                new VideoDecoderInputBuffer[10], new VideoDecoderOutputBuffer[10]) {
+                DecoderInputBuffer, VideoDecoderOutputBuffer, DecoderException>(
+                new DecoderInputBuffer[10], new VideoDecoderOutputBuffer[10]) {
               @Override
-              protected VideoDecoderInputBuffer createInputBuffer() {
-                return new VideoDecoderInputBuffer(
-                    DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT) {
+              protected DecoderInputBuffer createInputBuffer() {
+                return new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT) {
                   @Override
                   public void clear() {
                     super.clear();
@@ -157,7 +157,7 @@ public final class DecoderVideoRendererTest {
               @Nullable
               @Override
               protected DecoderException decode(
-                  VideoDecoderInputBuffer inputBuffer,
+                  DecoderInputBuffer inputBuffer,
                   VideoDecoderOutputBuffer outputBuffer,
                   boolean reset) {
                 outputBuffer.init(inputBuffer.timeUs, outputMode, /* supplementalData= */ null);

library/decoder/src/main/java/com/google/android/exoplayer2/decoder/DecoderInputBuffer.java

@@ -18,6 +18,7 @@ package com.google.android.exoplayer2.decoder;
 import androidx.annotation.IntDef;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.Format;
 import java.lang.annotation.Documented;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -73,6 +74,9 @@ public class DecoderInputBuffer extends Buffer {
   /** Allows buffer replacement using {@link ByteBuffer#allocateDirect(int)}. */
   public static final int BUFFER_REPLACEMENT_MODE_DIRECT = 2;
 
+  /** The {@link Format}. */
+  @Nullable public Format format;
+
   /** {@link CryptoInfo} for encrypted data. */
   public final CryptoInfo cryptoInfo;
 

library/decoder/src/main/java/com/google/android/exoplayer2/decoder/OutputBuffer.java → library/decoder/src/main/java/com/google/android/exoplayer2/decoder/DecoderOutputBuffer.java

@@ -16,10 +16,10 @@
 package com.google.android.exoplayer2.decoder;
 
 /** Output buffer decoded by a {@link Decoder}. */
-public abstract class OutputBuffer extends Buffer {
+public abstract class DecoderOutputBuffer extends Buffer {
 
   /** Buffer owner. */
-  public interface Owner<S extends OutputBuffer> {
+  public interface Owner<S extends DecoderOutputBuffer> {
 
     /**
      * Releases the buffer.

library/decoder/src/main/java/com/google/android/exoplayer2/decoder/SimpleDecoder.java

@@ -27,7 +27,7 @@ import java.util.ArrayDeque;
  */
 @SuppressWarnings("UngroupedOverloads")
 public abstract class SimpleDecoder<
-        I extends DecoderInputBuffer, O extends OutputBuffer, E extends DecoderException>
+        I extends DecoderInputBuffer, O extends DecoderOutputBuffer, E extends DecoderException>
     implements Decoder<I, O, E> {
 
   private final Thread decodeThread;

library/decoder/src/main/java/com/google/android/exoplayer2/decoder/SimpleOutputBuffer.java → library/decoder/src/main/java/com/google/android/exoplayer2/decoder/SimpleDecoderOutputBuffer.java

@@ -20,13 +20,13 @@ import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 
 /** Buffer for {@link SimpleDecoder} output. */
-public class SimpleOutputBuffer extends OutputBuffer {
+public class SimpleDecoderOutputBuffer extends DecoderOutputBuffer {
 
-  private final Owner<SimpleOutputBuffer> owner;
+  private final Owner<SimpleDecoderOutputBuffer> owner;
 
   @Nullable public ByteBuffer data;
 
-  public SimpleOutputBuffer(Owner<SimpleOutputBuffer> owner) {
+  public SimpleDecoderOutputBuffer(Owner<SimpleDecoderOutputBuffer> owner) {
     this.owner = owner;
   }
 

library/core/src/main/java/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java → library/decoder/src/main/java/com/google/android/exoplayer2/decoder/VideoDecoderOutputBuffer.java

@@ -13,16 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.video;
+package com.google.android.exoplayer2.decoder;
 
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
-import com.google.android.exoplayer2.decoder.OutputBuffer;
 import java.nio.ByteBuffer;
 
 /** Video decoder output buffer containing video frame data. */
-public class VideoDecoderOutputBuffer extends OutputBuffer {
+public class VideoDecoderOutputBuffer extends DecoderOutputBuffer {
 
   public static final int COLORSPACE_UNKNOWN = 0;
   public static final int COLORSPACE_BT601 = 1;

library/extractor/src/main/java/com/google/android/exoplayer2/text/SubtitleOutputBuffer.java

@@ -17,12 +17,12 @@ package com.google.android.exoplayer2.text;
 
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.Format;
-import com.google.android.exoplayer2.decoder.OutputBuffer;
+import com.google.android.exoplayer2.decoder.DecoderOutputBuffer;
 import com.google.android.exoplayer2.util.Assertions;
 import java.util.List;
 
 /** Base class for {@link SubtitleDecoder} output buffers. */
-public abstract class SubtitleOutputBuffer extends OutputBuffer implements Subtitle {
+public abstract class SubtitleOutputBuffer extends DecoderOutputBuffer implements Subtitle {
 
   @Nullable private Subtitle subtitle;
   private long subsampleOffsetUs;