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/*
* Copyright 2015 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.
*/
#ifndef FLOWGRAPH_MULTI_TO_MONO_CONVERTER_H
#define FLOWGRAPH_MULTI_TO_MONO_CONVERTER_H
#include <unistd.h>
#include <sys/types.h>
#include "FlowGraphNode.h"
namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph {
/**
* Convert a multi-channel interleaved stream to a monophonic stream
* by extracting channel[0].
*/
class MultiToMonoConverter : public FlowGraphNode {
public:
explicit MultiToMonoConverter(int32_t inputChannelCount);
virtual ~MultiToMonoConverter();
int32_t onProcess(int32_t numFrames) override;
const char *getName() override {
return "MultiToMonoConverter";
}
FlowGraphPortFloatInput input;
FlowGraphPortFloatOutput output;
};
} /* namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph */
#endif //FLOWGRAPH_MULTI_TO_MONO_CONVERTER_H
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