[3353] | 1 | //plugins.c: |
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| 2 | |
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| 3 | /* |
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[4708] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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[3353] | 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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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[3353] | 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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[3355] | 28 | #define MAX_PLUGINS 8 |
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| 29 | |
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[3362] | 30 | static struct _roard_plugin { |
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| 31 | struct roar_dl_lhandle * lhandle; |
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| 32 | struct roard_plugins_sched * sched; |
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[5275] | 33 | int protocols[MAX_PROTOS]; |
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[3362] | 34 | } g_plugins[MAX_PLUGINS]; |
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| 35 | static struct _roard_plugin * _pp = NULL; |
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[3355] | 36 | |
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[3362] | 37 | static struct _roard_plugin * _find_free(void) { |
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[3355] | 38 | int i; |
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| 39 | |
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| 40 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 41 | if ( g_plugins[i].lhandle == NULL ) { |
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| 42 | memset(&(g_plugins[i]), 0, sizeof(struct _roard_plugin)); |
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[3355] | 43 | return &(g_plugins[i]); |
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[3362] | 44 | } |
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[3355] | 45 | } |
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| 46 | |
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| 47 | return NULL; |
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| 48 | } |
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| 49 | |
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[3354] | 50 | int plugins_preinit (void) { |
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[3355] | 51 | memset(g_plugins, 0, sizeof(g_plugins)); |
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| 52 | |
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[3354] | 53 | return 0; |
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| 54 | } |
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| 55 | |
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[5275] | 56 | static void inline plugins_delete(struct _roard_plugin * plugin) { |
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| 57 | int i; |
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| 58 | |
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| 59 | if ( plugin->sched != NULL ) |
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| 60 | if ( plugin->sched->free != NULL ) |
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| 61 | plugin->sched->free(); |
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| 62 | |
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| 63 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 64 | if ( plugin->protocols[i] != -1 ) { |
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| 65 | clients_unregister_proto(plugin->protocols[i]); |
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| 66 | } |
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| 67 | } |
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| 68 | |
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| 69 | roar_dl_close(plugin->lhandle); |
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| 70 | memset(plugin, 0, sizeof(struct _roard_plugin)); |
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| 71 | plugin->lhandle = NULL; |
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| 72 | } |
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| 73 | |
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[3354] | 74 | int plugins_init (void) { |
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[3355] | 75 | int i; |
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| 76 | |
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| 77 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 78 | if ( g_plugins[i].lhandle != NULL ) { |
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| 79 | _pp = &(g_plugins[i]); |
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| 80 | |
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[4682] | 81 | _pp->sched = NULL; |
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| 82 | |
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[5275] | 83 | if ( roar_dl_ra_init(g_plugins[i].lhandle, NULL, NULL) == -1 ) { |
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| 84 | ROAR_WARN("plugins_init(void): Can not RA init lib at %p: %s", g_plugins[i].lhandle, roar_error2str(roar_error)); |
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| 85 | plugins_delete(&(g_plugins[i])); |
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| 86 | continue; |
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| 87 | } |
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[3362] | 88 | |
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[4682] | 89 | if ( g_plugins[i].sched != NULL ) |
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| 90 | if ( g_plugins[i].sched->init != NULL ) |
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| 91 | g_plugins[i].sched->init(); |
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[3362] | 92 | |
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| 93 | _pp = NULL; |
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[3355] | 94 | } |
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| 95 | } |
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| 96 | |
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[3354] | 97 | return 0; |
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| 98 | } |
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[3353] | 99 | |
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[3354] | 100 | int plugins_free (void) { |
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[3355] | 101 | int i; |
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| 102 | |
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| 103 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 104 | if ( g_plugins[i].lhandle != NULL ) { |
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[5275] | 105 | plugins_delete(&(g_plugins[i])); |
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[3355] | 106 | } |
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| 107 | } |
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| 108 | |
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[3357] | 109 | return plugins_preinit(); |
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[3354] | 110 | } |
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| 111 | |
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[3362] | 112 | int plugins_update (void) { |
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| 113 | int ret = 0; |
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| 114 | int i; |
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| 115 | |
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| 116 | for (i = 0; i < MAX_PLUGINS; i++) |
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| 117 | if ( g_plugins[i].lhandle != NULL ) |
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[4682] | 118 | if ( g_plugins[i].sched != NULL ) |
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| 119 | if ( g_plugins[i].sched->update != NULL ) |
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| 120 | if ( g_plugins[i].sched->update() == -1 ) |
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| 121 | ret = -1; |
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[3362] | 122 | |
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| 123 | return ret; |
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| 124 | } |
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| 125 | |
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[5275] | 126 | int plugins_load (const char * filename, const char * args) { |
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[3362] | 127 | struct _roard_plugin * next = _find_free(); |
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[5275] | 128 | struct roar_dl_librarypara * para; |
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| 129 | int i; |
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[3355] | 130 | |
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| 131 | if ( next == NULL ) |
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| 132 | return -1; |
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| 133 | |
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[5275] | 134 | for (i = 0; i < MAX_PROTOS; i++) |
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| 135 | next->protocols[i] = -1; |
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| 136 | |
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| 137 | if ( (para = roar_dl_para_new(args, NULL, ROARD_DL_APPNAME, ROARD_DL_ABIVERSION)) == NULL ) { |
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| 138 | ROAR_WARN("Can not load plugin (allocate para set): %s: %s", filename, roar_error2str(roar_error)); |
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| 139 | return -1; |
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| 140 | } |
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| 141 | |
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| 142 | next->lhandle = roar_dl_open(filename, ROAR_DL_FLAG_DEFAUTS, 0 /* we delay this until plugins_init() */, para); |
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| 143 | roar_dl_para_unref(para); |
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| 144 | |
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[3365] | 145 | if ( next->lhandle == NULL ) { |
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| 146 | ROAR_ERR("plugins_load(filename='%s'): can not load plugin: %s", filename, roar_dl_errstr(NULL)); |
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[3355] | 147 | return -1; |
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[3365] | 148 | } |
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[3355] | 149 | |
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| 150 | return 0; |
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[3354] | 151 | } |
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[3353] | 152 | |
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[3362] | 153 | int plugins_reg_sched(struct roard_plugins_sched * sched) { |
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| 154 | if ( _pp == NULL ) |
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| 155 | return -1; |
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| 156 | |
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| 157 | _pp->sched = sched; |
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| 158 | |
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| 159 | return 0; |
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| 160 | } |
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| 161 | |
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[4680] | 162 | int plugins_reg_proto(struct roard_proto * proto) { |
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[5275] | 163 | int i; |
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| 164 | |
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[4680] | 165 | if ( _pp == NULL ) |
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| 166 | return -1; |
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| 167 | |
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[5275] | 168 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 169 | if ( _pp->protocols[i] == -1 ) { |
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| 170 | _pp->protocols[i] = proto->proto; |
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| 171 | break; |
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| 172 | } |
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| 173 | } |
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| 174 | |
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| 175 | if ( i == MAX_PROTOS ) { |
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| 176 | roar_err_set(ROAR_ERROR_NOMEM); |
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| 177 | return -1; |
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| 178 | } |
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| 179 | |
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[4680] | 180 | return clients_register_proto(proto); |
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| 181 | } |
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| 182 | |
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[3353] | 183 | //ll |
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