mbed-os 6.10 versione
Diff: dsp/FIR_f32.h
- Revision:
- 1:fdd22bb7aa52
diff -r 83d0537c7d84 -r fdd22bb7aa52 dsp/FIR_f32.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dsp/FIR_f32.h Wed Nov 28 12:30:09 2012 +0000 @@ -0,0 +1,51 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2012 ARM Limited + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef FIR_F32_H +#define FIR_F32_H + +#include <stdint.h> +#include "arm_math.h" + +namespace dsp { + +template<uint16_t num_taps, uint32_t block_size=32> +class FIR_f32 { +public: + FIR_f32(const float32_t *coeff) { + arm_fir_init_f32(&fir, num_taps, (float32_t*)coeff, fir_state, block_size); + } + + void process(float32_t *sgn_in, float32_t *sgn_out) { + arm_fir_f32(&fir, sgn_in, sgn_out, block_size); + } + + void reset(void) { + memset(fir_state, 0, sizeof(fir_state)); + } + +private: + arm_fir_instance_f32 fir; + float32_t fir_state[block_size + num_taps - 1]; +}; + +} +#endif