mirror of https://github.com/ARMmbed/mbed-os.git
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2006-2012 ARM Limited
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef FIR_F32_H
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#define FIR_F32_H
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#include <stdint.h>
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#include "arm_math.h"
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namespace dsp {
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template<uint16_t num_taps, uint32_t block_size=32>
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class FIR_f32 {
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public:
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FIR_f32(const float32_t *coeff) {
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arm_fir_init_f32(&fir, num_taps, (float32_t*)coeff, fir_state, block_size);
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}
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void process(float32_t *sgn_in, float32_t *sgn_out) {
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arm_fir_f32(&fir, sgn_in, sgn_out, block_size);
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}
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void reset(void) {
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memset(fir_state, 0, sizeof(fir_state));
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}
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private:
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arm_fir_instance_f32 fir;
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float32_t fir_state[block_size + num_taps - 1];
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};
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}
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#endif
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