1 | /* |
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2 | Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org> |
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3 | |
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4 | This file is part of aubio. |
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5 | |
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6 | aubio is free software: you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation, either version 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |
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11 | aubio is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with aubio. If not, see <http://www.gnu.org/licenses/>. |
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18 | |
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19 | */ |
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20 | |
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21 | |
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22 | #include "config.h" |
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23 | #include "aubio_priv.h" |
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24 | #include "fvec.h" |
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25 | #include "fmat.h" |
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26 | #include "io/source.h" |
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27 | #include "synth/sampler.h" |
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28 | |
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29 | struct _aubio_sampler_t { |
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30 | uint_t samplerate; |
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31 | uint_t blocksize; |
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32 | aubio_source_t *source; |
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33 | fvec_t *source_output; |
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34 | fmat_t *source_output_multi; |
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35 | char_t *uri; |
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36 | uint_t playing; |
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37 | }; |
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38 | |
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39 | aubio_sampler_t *new_aubio_sampler(uint_t samplerate, uint_t blocksize) |
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40 | { |
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41 | aubio_sampler_t *s = AUBIO_NEW(aubio_sampler_t); |
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42 | if ((sint_t)blocksize < 1) { |
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43 | AUBIO_ERR("sampler: got blocksize %d, but can not be < 1\n", blocksize); |
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44 | goto beach; |
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45 | } |
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46 | s->samplerate = samplerate; |
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47 | s->blocksize = blocksize; |
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48 | s->source_output = new_fvec(blocksize); |
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49 | s->source_output_multi = new_fmat(4, blocksize); |
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50 | s->source = NULL; |
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51 | s->playing = 0; |
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52 | return s; |
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53 | beach: |
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54 | AUBIO_FREE(s); |
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55 | return NULL; |
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56 | } |
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57 | |
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58 | uint_t aubio_sampler_load( aubio_sampler_t * o, const char_t * uri ) |
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59 | { |
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60 | if (o->source) del_aubio_source(o->source); |
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61 | |
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62 | if (o->uri) AUBIO_FREE(o->uri); |
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63 | o->uri = AUBIO_ARRAY(char_t, strnlen(uri, PATH_MAX)); |
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64 | strncpy(o->uri, uri, strnlen(uri, PATH_MAX)); |
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65 | |
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66 | o->source = new_aubio_source(uri, o->samplerate, o->blocksize); |
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67 | if (o->source) return 0; |
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68 | AUBIO_ERR("sampler: failed loading %s", uri); |
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69 | return 1; |
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70 | } |
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71 | |
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72 | void aubio_sampler_do ( aubio_sampler_t * o, const fvec_t * input, fvec_t * output) |
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73 | { |
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74 | uint_t read = 0, i; |
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75 | if (o->playing) { |
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76 | aubio_source_do (o->source, o->source_output, &read); |
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77 | for (i = 0; i < output->length; i++) { |
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78 | output->data[i] += o->source_output->data[i]; |
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79 | } |
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80 | if (read < o->blocksize) o->playing = 0; |
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81 | } |
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82 | if (input && input != output) { |
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83 | for (i = 0; i < output->length; i++) { |
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84 | output->data[i] += input->data[i]; |
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85 | } |
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86 | } |
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87 | } |
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88 | |
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89 | void aubio_sampler_do_multi ( aubio_sampler_t * o, const fmat_t * input, fmat_t * output) |
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90 | { |
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91 | uint_t read = 0, i, j; |
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92 | if (o->playing) { |
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93 | aubio_source_do_multi (o->source, o->source_output_multi, &read); |
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94 | for (i = 0; i < output->height; i++) { |
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95 | for (j = 0; j < output->length; j++) { |
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96 | output->data[i][j] += o->source_output_multi->data[i][j]; |
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97 | } |
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98 | } |
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99 | if ( read < o->blocksize ) o->playing = 0; |
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100 | } |
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101 | if (input && input != output) { |
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102 | for (i = 0; i < output->height; i++) { |
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103 | for (j = 0; j < output->length; j++) { |
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104 | output->data[i][j] += input->data[i][j]; |
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105 | } |
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106 | } |
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107 | } |
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108 | } |
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109 | |
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110 | uint_t aubio_sampler_get_playing ( const aubio_sampler_t * o ) |
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111 | { |
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112 | return o->playing; |
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113 | } |
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114 | |
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115 | uint_t aubio_sampler_set_playing ( aubio_sampler_t * o, uint_t playing ) |
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116 | { |
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117 | o->playing = (playing == 1) ? 1 : 0; |
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118 | return 0; |
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119 | } |
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120 | |
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121 | uint_t aubio_sampler_play ( aubio_sampler_t * o ) |
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122 | { |
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123 | aubio_source_seek (o->source, 0); |
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124 | return aubio_sampler_set_playing (o, 1); |
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125 | } |
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126 | |
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127 | uint_t aubio_sampler_stop ( aubio_sampler_t * o ) |
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128 | { |
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129 | return aubio_sampler_set_playing (o, 0); |
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130 | } |
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131 | |
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132 | void del_aubio_sampler( aubio_sampler_t * o ) |
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133 | { |
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134 | if (o->source) { |
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135 | del_aubio_source(o->source); |
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136 | } |
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137 | if (o->uri) AUBIO_FREE(o->uri); |
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138 | del_fvec(o->source_output); |
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139 | del_fmat(o->source_output_multi); |
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140 | AUBIO_FREE(o); |
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141 | } |
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