1 | //plugins.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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5 | * |
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6 | * This file is part of roard 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 | * RoarAudio 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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | */ |
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24 | |
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25 | #include "roard.h" |
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26 | |
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27 | #define MAX_PLUGINS 8 |
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28 | |
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29 | static struct _roard_plugin { |
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30 | struct roar_dl_lhandle * lhandle; |
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31 | struct roard_plugins_sched * sched; |
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32 | } g_plugins[MAX_PLUGINS]; |
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33 | static struct _roard_plugin * _pp = NULL; |
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34 | |
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35 | static struct _roard_plugin * _find_free(void) { |
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36 | int i; |
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37 | |
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38 | for (i = 0; i < MAX_PLUGINS; i++) { |
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39 | if ( g_plugins[i].lhandle == NULL ) { |
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40 | memset(&(g_plugins[i]), 0, sizeof(struct _roard_plugin)); |
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41 | return &(g_plugins[i]); |
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42 | } |
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43 | } |
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44 | |
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45 | return NULL; |
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46 | } |
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47 | |
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48 | int plugins_preinit (void) { |
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49 | memset(g_plugins, 0, sizeof(g_plugins)); |
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50 | |
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51 | return 0; |
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52 | } |
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53 | |
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54 | int plugins_init (void) { |
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55 | int i; |
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56 | |
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57 | for (i = 0; i < MAX_PLUGINS; i++) { |
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58 | if ( g_plugins[i].lhandle != NULL ) { |
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59 | _pp = &(g_plugins[i]); |
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60 | |
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61 | roar_dl_ra_init(g_plugins[i].lhandle, NULL); |
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62 | |
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63 | if ( g_plugins[i].sched->init != NULL ) |
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64 | g_plugins[i].sched->init(); |
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65 | |
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66 | _pp = NULL; |
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67 | } |
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68 | } |
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69 | |
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70 | return 0; |
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71 | } |
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72 | |
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73 | int plugins_free (void) { |
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74 | int i; |
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75 | |
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76 | for (i = 0; i < MAX_PLUGINS; i++) { |
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77 | if ( g_plugins[i].lhandle != NULL ) { |
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78 | if ( g_plugins[i].sched->free != NULL ) |
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79 | g_plugins[i].sched->free(); |
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80 | |
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81 | roar_dl_close(g_plugins[i].lhandle); |
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82 | } |
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83 | } |
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84 | |
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85 | return plugins_preinit(); |
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86 | } |
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87 | |
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88 | int plugins_update (void) { |
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89 | int ret = 0; |
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90 | int i; |
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91 | |
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92 | for (i = 0; i < MAX_PLUGINS; i++) |
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93 | if ( g_plugins[i].lhandle != NULL ) |
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94 | if ( g_plugins[i].sched->update != NULL ) |
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95 | if ( g_plugins[i].sched->update() == -1 ) |
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96 | ret = -1; |
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97 | |
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98 | return ret; |
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99 | } |
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100 | |
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101 | int plugins_load (const char * filename) { |
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102 | struct _roard_plugin * next = _find_free(); |
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103 | |
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104 | if ( next == NULL ) |
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105 | return -1; |
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106 | |
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107 | next->lhandle = roar_dl_open(filename, -1, 0 /* we delay this until plugins_init() */); |
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108 | if ( next->lhandle == NULL ) { |
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109 | ROAR_ERR("plugins_load(filename='%s'): can not load plugin: %s", filename, roar_dl_errstr(NULL)); |
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110 | return -1; |
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111 | } |
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112 | |
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113 | return 0; |
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114 | } |
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115 | |
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116 | int plugins_reg_sched(struct roard_plugins_sched * sched) { |
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117 | if ( _pp == NULL ) |
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118 | return -1; |
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119 | |
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120 | _pp->sched = sched; |
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121 | |
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122 | return 0; |
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123 | } |
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124 | |
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125 | //ll |
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