1 /* SPDX-License-Identifier: BSD-3-Clause 2 * 3 * Copyright(c) 2018 Intel Corporation. All rights reserved. 4 * 5 * Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> 6 */ 7 8 /* PDM decimation FIR filters */ 9 10 #ifndef __SOF_AUDIO_COEFFICIENTS_PDM_DECIM_PDM_DECIM_TABLE_H__ 11 #define __SOF_AUDIO_COEFFICIENTS_PDM_DECIM_PDM_DECIM_TABLE_H__ 12 13 #include "pdm_decim_fir.h" 14 15 #include <stddef.h> 16 17 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_2 18 #include "pdm_decim_int32_02_4323_5100_010_095.h" 19 #include "pdm_decim_int32_02_4375_5100_010_095.h" 20 #endif 21 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_3 22 #include "pdm_decim_int32_03_4375_5100_010_095.h" 23 #endif 24 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_4 25 #include "pdm_decim_int32_04_4318_5100_010_095.h" 26 #endif 27 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_5 28 #include "pdm_decim_int32_05_4325_5100_010_095.h" 29 #endif 30 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_6 31 #include "pdm_decim_int32_06_4172_5100_010_095.h" 32 #endif 33 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_8 34 #include "pdm_decim_int32_08_4156_5301_010_090.h" 35 #endif 36 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_10 37 #include "pdm_decim_int32_10_4156_5345_010_090.h" 38 #endif 39 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_12 40 #include "pdm_decim_int32_12_4156_5345_010_090.h" 41 #endif 42 43 /* Note 1: Higher spec filter must be before lower spec filter 44 * if there are multiple filters for a decimation factor. The first 45 * filter is skipped if the length is too much vs. overrun limit. If 46 * other order the better filter would be never selected. 47 * 48 * Note 2: The introduction order of FIR decimation factors is the selection 49 * preference order. The decimation factor 5 and 10 (2*5) cause a often less 50 * compatible output sample rate for CIC so they are not used if there other 51 * suitable nearby values. 52 * 53 * The naming scheme of coefficients set is: 54 * <type>_<decim factor>_<rel passband>_<rel stopband>_<ripple>_<attenuation> 55 */ 56 struct pdm_decim *fir_list[] = { 57 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_2 58 &pdm_decim_int32_02_4375_5100_010_095, 59 &pdm_decim_int32_02_4323_5100_010_095, 60 #endif 61 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_3 62 &pdm_decim_int32_03_4375_5100_010_095, 63 #endif 64 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_4 65 &pdm_decim_int32_04_4318_5100_010_095, 66 #endif 67 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_6 68 &pdm_decim_int32_06_4172_5100_010_095, 69 #endif 70 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_5 71 &pdm_decim_int32_05_4325_5100_010_095, 72 #endif 73 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_8 74 &pdm_decim_int32_08_4156_5301_010_090, 75 #endif 76 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_12 77 &pdm_decim_int32_12_4156_5345_010_090, 78 #endif 79 #if CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_10 80 &pdm_decim_int32_10_4156_5345_010_090, 81 #endif 82 NULL, /* This marks the end of coefficients */ 83 }; 84 85 #endif /* __SOF_AUDIO_COEFFICIENTS_PDM_DECIM_PDM_DECIM_TABLE_H__ */ 86
