1 | //filter.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2012 |
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5 | * |
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6 | * This file is part of libroardsp a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroardsp is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | */ |
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25 | |
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26 | #include "libroardsp.h" |
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27 | |
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28 | static struct _roardsp_filterlist { |
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29 | int id; |
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30 | char * name; |
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31 | int (* init )(struct roardsp_filter * filter, struct roar_stream * stream, int id); |
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32 | int (*uninit )(struct roardsp_filter * filter); |
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33 | int (*ctl )(struct roardsp_filter * filter, int cmd, void * data); |
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34 | int (*reset )(struct roardsp_filter * filter, int what); |
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35 | int (*calc [5][3])(struct roardsp_filter * filter, void * data, size_t samples); |
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36 | } _roardsp_filterlist[] = { |
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37 | {ROARDSP_FILTER_AMP, "AMP", roardsp_amp_init, roardsp_amp_uninit, roardsp_amp_ctl, roardsp_amp_reset, { |
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38 | {NULL, NULL, NULL},{roardsp_amp_calc8, NULL, NULL},{roardsp_amp_calc16, NULL, NULL}, |
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39 | {NULL, NULL, NULL},{roardsp_amp_calc32, NULL, NULL}}}, |
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40 | {ROARDSP_FILTER_ADD, "Add", roardsp_amp_init, roardsp_amp_uninit, roardsp_amp_ctl, roardsp_add_reset, { |
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41 | {NULL, NULL, NULL},{roardsp_add_calc8, NULL, NULL},{roardsp_add_calc16, NULL, NULL}, |
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42 | {NULL, NULL, NULL},{roardsp_add_calc32, NULL, NULL}}}, |
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43 | #ifdef ROAR_HAVE_LIBM |
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44 | {ROARDSP_FILTER_LOWP, "Lowpass", roardsp_lowp_init, roardsp_lowp_uninit, roardsp_lowp_ctl, roardsp_lowp_reset, { |
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45 | {NULL, NULL, NULL},{roardsp_lowp_calc8, NULL, NULL},{roardsp_lowp_calc16, NULL, NULL}, |
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46 | {NULL, NULL, NULL},{roardsp_lowp_calc32, NULL, NULL}}}, |
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47 | {ROARDSP_FILTER_HIGHP, "Highpass", roardsp_highp_init, roardsp_highp_uninit, roardsp_highp_ctl, roardsp_highp_reset, { |
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48 | {NULL, NULL, NULL},{roardsp_highp_calc8, NULL, NULL},{roardsp_highp_calc16, NULL, NULL}, |
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49 | {NULL, NULL, NULL},{roardsp_highp_calc32, NULL, NULL}}}, |
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50 | #endif |
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51 | {ROARDSP_FILTER_QUANTIFY, "Quantifier", roardsp_quantify_init, NULL, roardsp_quantify_ctl, roardsp_quantify_reset, { |
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52 | {NULL, NULL, NULL},{roardsp_quantify_calc8, NULL, NULL},{roardsp_quantify_calc16, NULL, NULL}, |
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53 | {NULL, NULL, NULL},{roardsp_quantify_calc32, NULL, NULL}}}, |
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54 | {ROARDSP_FILTER_CLIP, "Clip", roardsp_clip_init, roardsp_clip_uninit, roardsp_clip_ctl, roardsp_clip_reset, { |
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55 | {NULL, NULL, NULL},{roardsp_clip_calc8, NULL, NULL},{roardsp_clip_calc16, NULL, NULL}, |
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56 | {NULL, NULL, NULL},{roardsp_clip_calc32, NULL, NULL}}}, |
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57 | {ROARDSP_FILTER_DOWNMIX, "downmix", roardsp_quantify_init, NULL, roardsp_downmix_ctl, roardsp_downmix_reset, { |
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58 | {NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, roardsp_downmix_calc162},{NULL, NULL, NULL},{NULL, NULL, NULL}}}, |
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59 | {ROARDSP_FILTER_DCBLOCK, "DCBlock", roardsp_dcblock_init, NULL, NULL, roardsp_dcblock_reset, { |
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60 | {NULL, NULL, NULL},{NULL, NULL, NULL},{roardsp_dcblock_calc16, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL}}}, |
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61 | {ROARDSP_FILTER_SWAP, "Swap", roardsp_swap_init, roardsp_swap_uninit, roardsp_swap_ctl, roardsp_swap_reset, { |
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62 | {NULL, NULL, NULL},{NULL, NULL, roardsp_swap_calc82},{NULL, NULL, roardsp_swap_calc162}, |
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63 | {NULL, NULL, NULL},{NULL, NULL, roardsp_swap_calc322}}}, |
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64 | {ROARDSP_FILTER_AGC, "AGC", roardsp_agc_init, roardsp_agc_uninit, roardsp_agc_ctl, roardsp_agc_reset, { |
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65 | {NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL}}}, |
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66 | #ifdef ROAR_HAVE_SPEEX_FILTER |
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67 | {ROARDSP_FILTER_SPEEX_PREP, "SpeexPrep", roardsp_speex_prep_init, roardsp_speex_prep_uninit, |
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68 | roardsp_speex_prep_ctl, roardsp_speex_prep_reset, { |
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69 | {NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, roardsp_speex_prep_calc161, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL}}}, |
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70 | #endif |
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71 | #ifdef ROAR_HAVE_LIBM |
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72 | {ROARDSP_FILTER_RESPONSE_CURVE, "ResponseCurve", roardsp_responsecurve_init, roardsp_responsecurve_uninit, |
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73 | roardsp_responsecurve_ctl, roardsp_responsecurve_reset, { |
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74 | {NULL, NULL, NULL},{roardsp_responsecurve_calc8, NULL, NULL},{roardsp_responsecurve_calc16, NULL, NULL}, |
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75 | {NULL, NULL, NULL},{roardsp_responsecurve_calc32, NULL, NULL} |
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76 | }}, |
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77 | {ROARDSP_FILTER_GOERTZEL, "Goertzel", roardsp_goertzel_init, roardsp_goertzel_uninit, |
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78 | roardsp_goertzel_ctl, roardsp_goertzel_reset, { |
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79 | {NULL, NULL, NULL},{roardsp_goertzel_calc8, NULL, NULL},{roardsp_goertzel_calc16, NULL, NULL}, |
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80 | {NULL, NULL, NULL},{roardsp_goertzel_calc32, NULL, NULL} |
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81 | }}, |
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82 | #endif |
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83 | {-1, NULL, NULL, NULL, NULL, NULL, { |
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84 | // ? 8Bit 16Bit 24Bit 32Bit |
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85 | // 0B:n 1 2 1B:n 1 2 2B:n 1 2 3B:n 1 2 4B:n 1 2 |
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86 | {NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL},{NULL, NULL, NULL}}} |
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87 | }; |
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88 | |
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89 | int roardsp_filter_str2id(const char * str) { |
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90 | struct _roardsp_filterlist * l = _roardsp_filterlist; |
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91 | |
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92 | while ( l->id != -1 ) { |
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93 | if ( strcasecmp(l->name, str) == 0 ) |
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94 | return l->id; |
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95 | l++; |
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96 | } |
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97 | |
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98 | roar_err_set(ROAR_ERROR_NOENT); |
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99 | return -1; |
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100 | } |
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101 | |
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102 | const char * roardsp_filter_id2str(const int id) { |
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103 | struct _roardsp_filterlist * l = _roardsp_filterlist; |
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104 | |
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105 | while ( l->id != -1 ) { |
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106 | if ( l->id == id ) |
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107 | return l->name; |
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108 | l++; |
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109 | } |
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110 | |
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111 | roar_err_set(ROAR_ERROR_NOENT); |
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112 | return NULL; |
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113 | } |
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114 | |
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115 | int roardsp_filter_new (struct roardsp_filter ** filter, struct roar_stream * stream, int id) { |
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116 | struct roardsp_filter * n; |
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117 | int ret; |
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118 | int error; |
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119 | |
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120 | if ( filter == NULL || stream == NULL ) { |
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121 | roar_err_set(ROAR_ERROR_FAULT); |
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122 | return -1; |
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123 | } |
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124 | |
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125 | *filter = NULL; // just to be sure |
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126 | |
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127 | n = roar_mm_malloc(sizeof(struct roardsp_filter)); |
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128 | |
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129 | if ( n == NULL ) |
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130 | return -1; |
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131 | |
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132 | if ( (ret = roardsp_filter_init(n, stream, id)) == -1 ) { |
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133 | error = roar_error; |
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134 | roar_mm_free(n); |
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135 | roar_err_set(error); |
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136 | return -1; |
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137 | } |
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138 | |
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139 | n->flags |= ROARDSP_FFLAG_FREE; |
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140 | |
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141 | *filter = n; |
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142 | |
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143 | return ret; |
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144 | } |
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145 | |
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146 | int roardsp_filter_init (struct roardsp_filter * filter, struct roar_stream * stream, int id) { |
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147 | struct _roardsp_filterlist * l = _roardsp_filterlist; |
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148 | int bytes; |
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149 | int (*calc)(struct roardsp_filter * filter, void * data, size_t samples) = NULL; |
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150 | |
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151 | if ( filter == NULL || stream == NULL ) { |
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152 | ROAR_DBG("roardsp_filter_init(*) = -1 // filter or stream is NULL"); |
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153 | roar_err_set(ROAR_ERROR_FAULT); |
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154 | return -1; |
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155 | } |
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156 | |
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157 | if ( id < 0 ) { |
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158 | roar_err_set(ROAR_ERROR_INVAL); |
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159 | return -1; |
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160 | } |
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161 | |
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162 | ROAR_DBG("roardsp_filter_init(filter=%p, stream=%p, id=%i) = ?", filter, stream, id); |
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163 | |
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164 | memset(filter, 0, sizeof(struct roardsp_filter)); |
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165 | |
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166 | filter->channels = stream->info.channels; |
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167 | filter->bits = stream->info.bits; |
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168 | filter->rate = stream->info.rate; |
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169 | |
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170 | bytes = stream->info.bits / 8; |
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171 | |
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172 | while ( l->id != id ) { |
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173 | if ( l->id == -1 ) { |
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174 | roar_err_set(ROAR_ERROR_NOENT); |
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175 | return -1; |
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176 | } |
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177 | l++; |
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178 | } |
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179 | |
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180 | filter->uninit = l->uninit; |
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181 | filter->ctl = l->ctl; |
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182 | filter->reset = l->reset; |
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183 | |
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184 | ROAR_DBG("roardsp_filter_init(filter=%p, stream=%p, id=%i): bytes=%i", filter, stream, id, bytes); |
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185 | |
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186 | if ( filter->channels < 3 ) |
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187 | calc = l->calc[bytes][filter->channels]; |
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188 | |
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189 | if ( calc == NULL ) |
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190 | calc = l->calc[bytes][0]; // for n channels |
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191 | |
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192 | if ( calc == NULL ) { |
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193 | ROAR_DBG("roardsp_filter_init(*) = -1 // no calc code"); |
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194 | roar_err_set(ROAR_ERROR_NOTSUP); |
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195 | return -1; |
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196 | } |
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197 | |
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198 | filter->calc = calc; |
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199 | |
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200 | if ( l->init != NULL ) { |
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201 | ROAR_DBG("roardsp_filter_init(*) = ? // execing init"); |
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202 | return l->init(filter, stream, id); |
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203 | } |
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204 | |
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205 | ROAR_DBG("roardsp_filter_init(*) = 0 // no init"); |
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206 | return 0; |
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207 | } |
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208 | |
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209 | int roardsp_filter_uninit(struct roardsp_filter * filter) { |
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210 | int ret = 0; |
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211 | |
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212 | if ( filter == NULL ) { |
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213 | roar_err_set(ROAR_ERROR_FAULT); |
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214 | return -1; |
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215 | } |
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216 | |
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217 | if ( filter->uninit != NULL ) |
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218 | ret = filter->uninit(filter); |
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219 | |
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220 | if ( filter->flags & ROARDSP_FFLAG_FREE ) { |
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221 | roar_mm_free(filter); |
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222 | } else { |
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223 | memset(filter, 0, sizeof(struct roardsp_filter)); |
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224 | } |
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225 | |
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226 | return ret; |
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227 | } |
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228 | |
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229 | int roardsp_filter_calc (struct roardsp_filter * filter, void * data, size_t len) { |
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230 | int ret = 0; |
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231 | |
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232 | if ( filter == NULL ) { |
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233 | roar_err_set(ROAR_ERROR_FAULT); |
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234 | return -1; |
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235 | } |
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236 | |
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237 | if ( data == NULL && len != 0 ) { |
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238 | roar_err_set(ROAR_ERROR_FAULT); |
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239 | return -1; |
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240 | } |
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241 | |
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242 | if ( filter->calc != NULL ) |
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243 | ret = filter->calc(filter, data, len); |
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244 | |
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245 | return ret; |
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246 | } |
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247 | |
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248 | int roardsp_filter_ctl (struct roardsp_filter * filter, int cmd, void * data) { |
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249 | if ( filter == NULL ) { |
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250 | roar_err_set(ROAR_ERROR_FAULT); |
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251 | return -1; |
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252 | } |
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253 | |
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254 | if ( filter->ctl != NULL ) |
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255 | return filter->ctl(filter, cmd, data); |
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256 | |
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257 | roar_err_set(ROAR_ERROR_NOSYS); |
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258 | return -1; |
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259 | } |
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260 | |
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261 | int roardsp_filter_reset (struct roardsp_filter * filter, int what) { |
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262 | if ( filter == NULL ) { |
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263 | roar_err_set(ROAR_ERROR_FAULT); |
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264 | return -1; |
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265 | } |
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266 | |
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267 | if ( filter->reset != NULL ) |
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268 | return filter->reset(filter, what); |
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269 | |
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270 | roar_err_set(ROAR_ERROR_NOSYS); |
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271 | return -1; |
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272 | } |
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273 | |
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274 | //ll |
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