| /* |
| * Copyright (c) 2018, Intel Corporation |
| * All rights reserved. |
| * |
| * Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> |
| * Sathish Kuttan <sathish.k.kuttan@intel.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef __PDM_DECIM_FIR__H__ |
| #define __PDM_DECIM_FIR__H__ |
| |
| #define DMIC_FIR_LIST_LENGTH 8 |
| |
| /* Format for generated coefficients tables */ |
| |
| struct pdm_decim { |
| int decim_factor; |
| int length; |
| int shift; |
| int relative_passband; |
| int relative_stopband; |
| int passband_ripple; |
| int stopband_ripple; |
| const int32_t *coef; |
| }; |
| |
| struct pdm_decim **pdm_decim_get_fir_list(void); |
| |
| #endif /* __PDM_DECIM_FIR__H__ */ |
