1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.google.android.exoplayer2.decoder;
17 
18 import androidx.annotation.Nullable;
19 import java.nio.ByteBuffer;
20 import java.nio.ByteOrder;
21 
22 /**
23  * Buffer for {@link SimpleDecoder} output.
24  */
25 public class SimpleOutputBuffer extends OutputBuffer {
26 
27   private final Owner<SimpleOutputBuffer> owner;
28 
29   @Nullable public ByteBuffer data;
30 
SimpleOutputBuffer(Owner<SimpleOutputBuffer> owner)31   public SimpleOutputBuffer(Owner<SimpleOutputBuffer> owner) {
32     this.owner = owner;
33   }
34 
35   /**
36    * Initializes the buffer.
37    *
38    * @param timeUs The presentation timestamp for the buffer, in microseconds.
39    * @param size An upper bound on the size of the data that will be written to the buffer.
40    * @return The {@link #data} buffer, for convenience.
41    */
init(long timeUs, int size)42   public ByteBuffer init(long timeUs, int size) {
43     this.timeUs = timeUs;
44     if (data == null || data.capacity() < size) {
45       data = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder());
46     }
47     data.position(0);
48     data.limit(size);
49     return data;
50   }
51 
52   @Override
clear()53   public void clear() {
54     super.clear();
55     if (data != null) {
56       data.clear();
57     }
58   }
59 
60   @Override
release()61   public void release() {
62     owner.releaseOutputBuffer(this);
63   }
64 
65 }
66