/*
* Copyright (C) 2014 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.exoplayer;
import java.nio.ByteBuffer;
/**
* Holds sample data and corresponding metadata.
*/
public final class SampleHolder {
/**
* Disallows buffer replacement.
*/
public static final int BUFFER_REPLACEMENT_MODE_DISABLED = 0;
/**
* Allows buffer replacement using {@link ByteBuffer#allocate(int)}.
*/
public static final int BUFFER_REPLACEMENT_MODE_NORMAL = 1;
/**
* Allows buffer replacement using {@link ByteBuffer#allocateDirect(int)}.
*/
public static final int BUFFER_REPLACEMENT_MODE_DIRECT = 2;
public final CryptoInfo cryptoInfo;
/**
* A buffer holding the sample data.
*/
public ByteBuffer data;
/**
* The size of the sample in bytes.
*/
public int size;
/**
* Flags that accompany the sample. A combination of
* {@link android.media.MediaExtractor#SAMPLE_FLAG_SYNC} and
* {@link android.media.MediaExtractor#SAMPLE_FLAG_ENCRYPTED}
*/
public int flags;
/**
* The time at which the sample should be presented.
*/
public long timeUs;
/**
* If true then the sample should be decoded, but should not be presented.
*/
public boolean decodeOnly;
private final int bufferReplacementMode;
/**
* @param bufferReplacementMode Determines the behavior of {@link #replaceBuffer(int)}. One of
* {@link #BUFFER_REPLACEMENT_MODE_DISABLED}, {@link #BUFFER_REPLACEMENT_MODE_NORMAL} and
* {@link #BUFFER_REPLACEMENT_MODE_DIRECT}.
*/
public SampleHolder(int bufferReplacementMode) {
this.cryptoInfo = new CryptoInfo();
this.bufferReplacementMode = bufferReplacementMode;
}
/**
* Attempts to replace {@link #data} with a {@link ByteBuffer} of the specified capacity.
*
* @param capacity The capacity of the replacement buffer, in bytes.
* @return True if the buffer was replaced. False otherwise.
*/
public boolean replaceBuffer(int capacity) {
switch (bufferReplacementMode) {
case BUFFER_REPLACEMENT_MODE_NORMAL:
data = ByteBuffer.allocate(capacity);
return true;
case BUFFER_REPLACEMENT_MODE_DIRECT:
data = ByteBuffer.allocateDirect(capacity);
return true;
}
return false;
}
/**
* Clears {@link #data}. Does nothing if {@link #data} is null.
*/
public void clearData() {
if (data != null) {
data.clear();
}
}
}