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100 lines
2.3 KiB
C++
100 lines
2.3 KiB
C++
/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: FileSource.h
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* Description: Node for creating File sources
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*
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* $Date: 30 July 2021
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* $Revision: V1.10.0
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*
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* Target Processor: Cortex-M and Cortex-A cores
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* -------------------------------------------------------------------- */
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/*
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* Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* 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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* 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, WITHOUT
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* 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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#ifndef _FILESOURCE_H_
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#define _FILESOURCE_H_
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template<typename OUT,int outputSize> class FileSource;
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/*
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Real a list of floats from a file and pad with zeros indefinitely when end of
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file is reached.
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*/
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template<int outputSize>
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class FileSource<float32_t,outputSize>: public GenericSource<float32_t,outputSize>
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{
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public:
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FileSource(FIFOBase<float32_t> &dst,std::string name):GenericSource<float32_t,outputSize>(dst),
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input(name)
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{
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};
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int prepareForRunning() override
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{
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if (this->willOverflow()
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)
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{
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return(CG_SKIP_EXECUTION_ID_CODE); // Skip execution
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}
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return(0);
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};
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int run() override
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{
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string str;
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int i;
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float32_t *b=this->getWriteBuffer();
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if (input.eof())
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{
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for(i=0;i<outputSize;i++)
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{
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b[i] = 0;
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}
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}
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else
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{
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for(i=0;i<outputSize;i++)
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{
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if (!getline(input, str))
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{
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b[i] = 0;
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break;
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}
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b[i] = (float)atof(str.c_str());
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}
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for(;i<outputSize;i++)
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{
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b[i] = 0;
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}
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}
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return(0);
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};
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ifstream input;
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};
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#endif
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