/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera.async;
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import javax.annotation.Nonnull;
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/**
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* An output stream of objects which can be closed from either the producer or
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* the consumer.
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*/
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public interface BufferQueueController<T> extends Updatable<T>, SafeCloseable {
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/**
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* Adds the given element to the stream. Streams must support calling this
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* even after closed.
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*
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* @param element The element to add.
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*/
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@Override
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public void update(@Nonnull T element);
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/**
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* Closes the stream. Implementations must tolerate multiple calls to close.
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*/
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@Override
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public void close();
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/**
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* @return Whether the stream is closed.
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*/
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public boolean isClosed();
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}
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