Format with google-java-format

Also amended Javadoc and added assertion to grow method

Author: tonihei

libraries/decoder/src/main/java/androidx/media3/decoder/SimpleDecoderOutputBuffer.java

@@ -51,14 +51,16 @@ public ByteBuffer init(long timeUs, int size) {
   }
 
   /**
-   * Reallocates the buffer with new size
-   * Existing data between beginning of the buffer and {@link ByteBuffer#limit} is copied to the new buffer,
-   * and {@link ByteBuffer#position} is preserved. {@link ByteBuffer#limit} is set to the new size.
-   * @param newSize New size of buffer.
+   * Grows the buffer with to a new size.
+   *
+   * <p>Existing data is copied to the new buffer, and {@link ByteBuffer#position} is preserved.
+   *
+   * @param newSize New size of the buffer.
    * @return The {@link #data} buffer, for convenience.
    */
   public ByteBuffer grow(int newSize) {
     Assertions.checkNotNull(data);
+    Assertions.checkArgument(newSize >= data.limit());
     final ByteBuffer newData = ByteBuffer.allocateDirect(newSize).order(ByteOrder.nativeOrder());
     final int restorePosition = data.position();
     data.position(0);

libraries/decoder_ffmpeg/src/main/java/androidx/media3/decoder/ffmpeg/FfmpegAudioDecoder.java

@@ -63,7 +63,8 @@ public FfmpegAudioDecoder(
     codecName = Assertions.checkNotNull(FfmpegLibrary.getCodecName(format.sampleMimeType));
     extraData = getExtraData(format.sampleMimeType, format.initializationData);
     encoding = outputFloat ? C.ENCODING_PCM_FLOAT : C.ENCODING_PCM_16BIT;
-    outputBufferSize = outputFloat ? INITIAL_OUTPUT_BUFFER_SIZE_32BIT : INITIAL_OUTPUT_BUFFER_SIZE_16BIT;
+    outputBufferSize =
+        outputFloat ? INITIAL_OUTPUT_BUFFER_SIZE_32BIT : INITIAL_OUTPUT_BUFFER_SIZE_16BIT;
     nativeContext =
         ffmpegInitialize(codecName, extraData, outputFloat, format.sampleRate, format.channelCount);
     if (nativeContext == 0) {
@@ -106,9 +107,10 @@ protected FfmpegDecoderException decode(
     }
     ByteBuffer inputData = Util.castNonNull(inputBuffer.data);
     int inputSize = inputData.limit();
-    outputBuffer.init(inputBuffer.timeUs, outputBufferSize);
-
-    int result = ffmpegDecode(nativeContext, inputData, inputSize, outputBuffer, outputBuffer.data, outputBufferSize);
+    ByteBuffer outputData = outputBuffer.init(inputBuffer.timeUs, outputBufferSize);
+    int result =
+        ffmpegDecode(
+            nativeContext, inputData, inputSize, outputBuffer, outputData, outputBufferSize);
     if (result == AUDIO_DECODER_ERROR_OTHER) {
       return new FfmpegDecoderException("Error decoding (see logcat).");
     } else if (result == AUDIO_DECODER_ERROR_INVALID_DATA) {
@@ -135,13 +137,15 @@ protected FfmpegDecoderException decode(
       }
       hasOutputFormat = true;
     }
-    outputBuffer.data.position(0);
-    outputBuffer.data.limit(result);
+    outputData.position(0);
+    outputData.limit(result);
     return null;
   }
 
   // Called from native code
-  /** @noinspection unused*/
+  /**
+   * @noinspection unused
+   */
   private ByteBuffer growOutputBuffer(SimpleDecoderOutputBuffer outputBuffer, int requiredSize) {
     // Use it for new buffer so that hopefully we won't need to reallocate again
     outputBufferSize = requiredSize;
@@ -229,7 +233,12 @@ private native long ffmpegInitialize(
       int rawChannelCount);
 
   private native int ffmpegDecode(
-      long context, ByteBuffer inputData, int inputSize, SimpleDecoderOutputBuffer decoderOutputBuffer, ByteBuffer outputData, int outputSize);
+      long context,
+      ByteBuffer inputData,
+      int inputSize,
+      SimpleDecoderOutputBuffer decoderOutputBuffer,
+      ByteBuffer outputData,
+      int outputSize);
 
   private native int ffmpegGetChannelCount(long context);