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CMSIS-DSP/ComputeGraph/cg/static/nodes/cpp/OverlapAndAdd.h

82 lines
2.5 KiB
C++

/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: OverlapAndAdd.h
* Description: Overlap And Add
*
* $Date: 25 October 2022
* $Revision: V1.10.0
*
* Target Processor: Cortex-M and Cortex-A cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2022 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* 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
*
* 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 _OVERLAPANDADD_H_
#define _OVERLAPANDADD_H_
template<typename IN,int windowSize, int overlap>
class OverlapAdd: public GenericNode<IN,windowSize,IN,windowSize-overlap>
{
public:
OverlapAdd(FIFOBase<IN> &src,FIFOBase<IN> &dst):GenericNode<IN,windowSize,IN,overlap>(src,dst)
{
static_assert((windowSize-overlap)>0, "Overlap is too big");
memory.resize(overlap);
};
int run(){
int i;
IN *a=this->getReadBuffer();
IN *b=this->getWriteBuffer();
for(i=0;i<overlap;i++)
{
memory[i] = a[i] + memory[i];
}
if (2*overlap - windowSize > 0)
{
memcpy((void*)b,(void*)memory.data(),(windowSize-overlap)*sizeof(IN));
memmove(memory.data(),memory.data()+windowSize-overlap,(2*overlap - windowSize)*sizeof(IN));
memcpy(memory.data()+2*overlap - windowSize,a+overlap,(windowSize-overlap)*sizeof(IN));
}
else if (2*overlap - windowSize < 0)
{
memcpy((void*)b,(void*)memory.data(),overlap*sizeof(IN));
memcpy((void*)(b+overlap),(void*)(a+overlap),(windowSize - 2*overlap)*sizeof(IN));
memcpy((void*)memory.data(),(void*)(a+windowSize-overlap),overlap*sizeof(IN));
}
else
{
memcpy((void*)b,(void*)memory.data(),overlap*sizeof(IN));
memcpy((void*)memory.data(),(void*)(a+overlap),overlap*sizeof(IN));
}
return(0);
};
protected:
std::vector<IN> memory;
};
#endif