1 | //filter_add.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2014 |
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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 | #define _calcX(bits) \ |
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29 | int roardsp_add_calc##bits (struct roardsp_filter * filter, void * data, size_t samples) { \ |
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30 | struct roardsp_amp * self = (struct roardsp_amp *) filter->inst; \ |
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31 | int##bits##_t * samp = (int##bits##_t *) data; \ |
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32 | size_t i; \ |
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33 | \ |
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34 | for (i = 0; i < samples; i++) { \ |
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35 | samp[i] += self->mul / self->div; \ |
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36 | }; \ |
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37 | \ |
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38 | return 0; \ |
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39 | } |
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40 | |
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41 | _calcX(8) |
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42 | _calcX(16) |
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43 | _calcX(32) |
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44 | |
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45 | int roardsp_add_reset (struct roardsp_filter * filter, int what) { |
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46 | struct roardsp_amp * self; |
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47 | |
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48 | if ( filter == NULL ) |
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49 | return -1; |
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50 | |
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51 | if ( filter->inst == NULL ) |
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52 | return -1; |
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53 | |
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54 | self = filter->inst; |
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55 | |
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56 | switch (what) { |
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57 | case ROARDSP_RESET_NONE: |
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58 | case ROARDSP_RESET_STATE: |
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59 | return 0; |
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60 | break; |
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61 | case ROARDSP_RESET_FULL: |
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62 | self->mul = 0; |
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63 | self->div = 1; |
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64 | return 0; |
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65 | break; |
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66 | default: |
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67 | return -1; |
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68 | } |
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69 | |
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70 | return -1; |
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71 | } |
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72 | |
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73 | //ll |
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