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/*
* Copyright (C) 2016 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 org.mozilla.thirdparty.com.google.android.exoplayer2.decoder;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
/**
* Base class for buffers with flags.
*/
public abstract class Buffer {
@C.BufferFlags
private int flags;
/**
* Clears the buffer.
*/
public void clear() {
flags = 0;
}
/**
* Returns whether the {@link C#BUFFER_FLAG_DECODE_ONLY} flag is set.
*/
public final boolean isDecodeOnly() {
return getFlag(C.BUFFER_FLAG_DECODE_ONLY);
}
/**
* Returns whether the {@link C#BUFFER_FLAG_END_OF_STREAM} flag is set.
*/
public final boolean isEndOfStream() {
return getFlag(C.BUFFER_FLAG_END_OF_STREAM);
}
/**
* Returns whether the {@link C#BUFFER_FLAG_KEY_FRAME} flag is set.
*/
public final boolean isKeyFrame() {
return getFlag(C.BUFFER_FLAG_KEY_FRAME);
}
/** Returns whether the {@link C#BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA} flag is set. */
public final boolean hasSupplementalData() {
return getFlag(C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA);
}
/**
* Replaces this buffer's flags with {@code flags}.
*
* @param flags The flags to set, which should be a combination of the {@code C.BUFFER_FLAG_*}
* constants.
*/
public final void setFlags(@C.BufferFlags int flags) {
this.flags = flags;
}
/**
* Adds the {@code flag} to this buffer's flags.
*
* @param flag The flag to add to this buffer's flags, which should be one of the
* {@code C.BUFFER_FLAG_*} constants.
*/
public final void addFlag(@C.BufferFlags int flag) {
flags |= flag;
}
/**
* Removes the {@code flag} from this buffer's flags, if it is set.
*
* @param flag The flag to remove.
*/
public final void clearFlag(@C.BufferFlags int flag) {
flags &= ~flag;
}
/**
* Returns whether the specified flag has been set on this buffer.
*
* @param flag The flag to check.
* @return Whether the flag is set.
*/
protected final boolean getFlag(@C.BufferFlags int flag) {
return (flags & flag) == flag;
}
}
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