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/*
Copyright 2018 Google Inc. All Rights Reserved.
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.
*/
#ifndef RESONANCE_AUDIO_NODE_SINK_NODE_H_
#define RESONANCE_AUDIO_NODE_SINK_NODE_H_
#include <memory>
#include <vector>
#include "base/audio_buffer.h"
#include "node/publisher_node.h"
#include "node/subscriber_node.h"
namespace vraudio {
// Audio sink node that reads from multiple inputs.
class SinkNode : public Node, public SubscriberNode<const AudioBuffer*> {
public:
typedef PublisherNode<const AudioBuffer*> PublisherNodeType;
SinkNode();
// Polls for data on all inputs of the sink node.
//
// @return A vector of input data.
const std::vector<const AudioBuffer*>& ReadInputs();
// SubscriberNode<AudioBuffer> implementation.
void Connect(
const std::shared_ptr<PublisherNodeType>& publisher_node) override;
// Node implementation.
void Process() final;
bool CleanUp() final;
// Disable copy constructor.
SinkNode(const SinkNode& that) = delete;
private:
// Input stream to poll for incoming data.
Node::Input<const AudioBuffer*> input_stream_;
};
} // namespace vraudio
#endif // RESONANCE_AUDIO_NODE_SINK_NODE_H_
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