[3353] | 1 | //plugins.c: |
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| 2 | |
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| 3 | /* |
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[5381] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2012 |
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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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[5567] | 37 | static int _plugins_inited = 0; |
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| 38 | |
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[5576] | 39 | static int plugin_callback(enum roar_dl_fnreg_action action, int fn, int subtype, const void * object, size_t objectlen, int version, int options, void * userdata, struct roar_dl_lhandle * lhandle); |
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| 40 | static const struct roar_dl_fnreg _plugin_callbacks = { |
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| 41 | .fn = -1, |
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| 42 | .subtype = -1, |
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| 43 | .version = -1, |
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| 44 | .callback = plugin_callback, |
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| 45 | .userdata = NULL |
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| 46 | }; |
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| 47 | |
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[3362] | 48 | static struct _roard_plugin * _find_free(void) { |
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[3355] | 49 | int i; |
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| 50 | |
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| 51 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 52 | if ( g_plugins[i].lhandle == NULL ) { |
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| 53 | memset(&(g_plugins[i]), 0, sizeof(struct _roard_plugin)); |
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[3355] | 54 | return &(g_plugins[i]); |
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[3362] | 55 | } |
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[3355] | 56 | } |
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| 57 | |
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| 58 | return NULL; |
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| 59 | } |
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| 60 | |
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[3354] | 61 | int plugins_preinit (void) { |
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[3355] | 62 | memset(g_plugins, 0, sizeof(g_plugins)); |
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| 63 | |
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[3354] | 64 | return 0; |
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| 65 | } |
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| 66 | |
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[5275] | 67 | static void inline plugins_delete(struct _roard_plugin * plugin) { |
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| 68 | int i; |
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| 69 | |
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[5312] | 70 | if ( plugin->sched != NULL ) { |
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| 71 | if ( plugin->sched->free != NULL ) { |
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| 72 | roar_dl_context_restore(plugin->lhandle); |
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[5275] | 73 | plugin->sched->free(); |
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[5312] | 74 | roar_dl_context_store(plugin->lhandle); |
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| 75 | } |
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| 76 | } |
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[5275] | 77 | |
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[5319] | 78 | roar_dl_appsched_trigger(plugin->lhandle, ROAR_DL_APPSCHED_FREE); |
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| 79 | |
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[5275] | 80 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 81 | if ( plugin->protocols[i] != -1 ) { |
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| 82 | clients_unregister_proto(plugin->protocols[i]); |
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| 83 | } |
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| 84 | } |
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| 85 | |
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| 86 | roar_dl_close(plugin->lhandle); |
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| 87 | memset(plugin, 0, sizeof(struct _roard_plugin)); |
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| 88 | plugin->lhandle = NULL; |
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| 89 | } |
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| 90 | |
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[5567] | 91 | static int plugins_init_one(struct _roard_plugin * plugin) { |
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| 92 | if ( plugin == NULL ) |
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| 93 | return -1; |
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| 94 | |
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| 95 | _pp = plugin; |
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| 96 | _pp->sched = NULL; |
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| 97 | |
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| 98 | if ( roar_dl_ra_init(plugin->lhandle, NULL, NULL) == -1 ) { |
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| 99 | ROAR_WARN("plugins_init(void): Can not RA init lib at %p: %s", plugin->lhandle, roar_error2str(roar_error)); |
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| 100 | plugins_delete(plugin); |
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| 101 | return -1; |
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| 102 | } |
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| 103 | |
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| 104 | if ( plugin->sched != NULL ) { |
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| 105 | if ( plugin->sched->init != NULL ) { |
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| 106 | roar_dl_context_restore(plugin->lhandle); |
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| 107 | plugin->sched->init(); |
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| 108 | roar_dl_context_store(plugin->lhandle); |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | roar_dl_appsched_trigger(plugin->lhandle, ROAR_DL_APPSCHED_INIT); |
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| 113 | |
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| 114 | _pp = NULL; |
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| 115 | |
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| 116 | return 0; |
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| 117 | } |
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| 118 | |
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[3354] | 119 | int plugins_init (void) { |
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[5567] | 120 | size_t i; |
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| 121 | |
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| 122 | if ( _plugins_inited ) { |
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| 123 | roar_err_set(ROAR_ERROR_BUSY); |
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| 124 | return -1; |
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| 125 | } |
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[3355] | 126 | |
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[5576] | 127 | roar_dl_register_fn(ROAR_DL_HANDLE_APPLICATION, ROAR_DL_FN_REGFN, ROAR_DL_FNREG_SUBTYPE, &_plugin_callbacks, ROAR_DL_FNREG_SIZE, ROAR_DL_FNREG_VERSION, ROAR_DL_FNREG_OPT_NONE); |
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| 128 | |
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[3355] | 129 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 130 | if ( g_plugins[i].lhandle != NULL ) { |
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[5567] | 131 | plugins_init_one(&(g_plugins[i])); |
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[3355] | 132 | } |
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| 133 | } |
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| 134 | |
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[5567] | 135 | _plugins_inited = 1; |
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| 136 | |
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[3354] | 137 | return 0; |
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| 138 | } |
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[3353] | 139 | |
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[3354] | 140 | int plugins_free (void) { |
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[3355] | 141 | int i; |
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| 142 | |
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| 143 | for (i = 0; i < MAX_PLUGINS; i++) { |
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[3362] | 144 | if ( g_plugins[i].lhandle != NULL ) { |
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[5275] | 145 | plugins_delete(&(g_plugins[i])); |
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[3355] | 146 | } |
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| 147 | } |
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| 148 | |
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[3357] | 149 | return plugins_preinit(); |
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[3354] | 150 | } |
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| 151 | |
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[3362] | 152 | int plugins_update (void) { |
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| 153 | int ret = 0; |
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| 154 | int i; |
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| 155 | |
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[5312] | 156 | for (i = 0; i < MAX_PLUGINS; i++) { |
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| 157 | if ( g_plugins[i].lhandle != NULL ) { |
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| 158 | if ( g_plugins[i].sched != NULL ) { |
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| 159 | if ( g_plugins[i].sched->update != NULL ) { |
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| 160 | roar_dl_context_restore(g_plugins[i].lhandle); |
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[4682] | 161 | if ( g_plugins[i].sched->update() == -1 ) |
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| 162 | ret = -1; |
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[5312] | 163 | roar_dl_context_store(g_plugins[i].lhandle); |
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| 164 | } |
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| 165 | } |
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[5319] | 166 | if ( roar_dl_appsched_trigger(g_plugins[i].lhandle, ROAR_DL_APPSCHED_UPDATE) == -1 ) |
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| 167 | if ( roar_error != ROAR_ERROR_NOENT ) |
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| 168 | ret = -1; |
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[5312] | 169 | } |
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| 170 | } |
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[3362] | 171 | |
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| 172 | return ret; |
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| 173 | } |
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| 174 | |
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[5275] | 175 | int plugins_load (const char * filename, const char * args) { |
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[3362] | 176 | struct _roard_plugin * next = _find_free(); |
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[5275] | 177 | struct roar_dl_librarypara * para; |
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| 178 | int i; |
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[3355] | 179 | |
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| 180 | if ( next == NULL ) |
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| 181 | return -1; |
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| 182 | |
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[5275] | 183 | for (i = 0; i < MAX_PROTOS; i++) |
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| 184 | next->protocols[i] = -1; |
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| 185 | |
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| 186 | if ( (para = roar_dl_para_new(args, NULL, ROARD_DL_APPNAME, ROARD_DL_ABIVERSION)) == NULL ) { |
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| 187 | ROAR_WARN("Can not load plugin (allocate para set): %s: %s", filename, roar_error2str(roar_error)); |
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| 188 | return -1; |
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| 189 | } |
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| 190 | |
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[5427] | 191 | next->lhandle = roar_dl_open(filename, ROAR_DL_FLAG_PLUGIN, 0 /* we delay this until plugins_init() */, para); |
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[5275] | 192 | roar_dl_para_unref(para); |
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| 193 | |
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[3365] | 194 | if ( next->lhandle == NULL ) { |
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| 195 | ROAR_ERR("plugins_load(filename='%s'): can not load plugin: %s", filename, roar_dl_errstr(NULL)); |
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[3355] | 196 | return -1; |
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[3365] | 197 | } |
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[3355] | 198 | |
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[5567] | 199 | if ( _plugins_inited ) |
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| 200 | return plugins_init_one(next); |
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| 201 | |
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[3355] | 202 | return 0; |
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[3354] | 203 | } |
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[3353] | 204 | |
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[3362] | 205 | int plugins_reg_sched(struct roard_plugins_sched * sched) { |
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| 206 | if ( _pp == NULL ) |
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| 207 | return -1; |
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| 208 | |
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| 209 | _pp->sched = sched; |
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| 210 | |
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| 211 | return 0; |
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| 212 | } |
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| 213 | |
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[4680] | 214 | int plugins_reg_proto(struct roard_proto * proto) { |
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[5275] | 215 | int i; |
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| 216 | |
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[4680] | 217 | if ( _pp == NULL ) |
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| 218 | return -1; |
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| 219 | |
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[5275] | 220 | for (i = 0; i < MAX_PROTOS; i++) { |
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| 221 | if ( _pp->protocols[i] == -1 ) { |
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| 222 | _pp->protocols[i] = proto->proto; |
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| 223 | break; |
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| 224 | } |
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| 225 | } |
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| 226 | |
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| 227 | if ( i == MAX_PROTOS ) { |
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| 228 | roar_err_set(ROAR_ERROR_NOMEM); |
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| 229 | return -1; |
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| 230 | } |
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| 231 | |
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[5312] | 232 | return clients_register_proto(proto, _pp->lhandle); |
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[4680] | 233 | } |
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| 234 | |
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[5576] | 235 | static int plugin_callback(enum roar_dl_fnreg_action action, int fn, int subtype, const void * object, size_t objectlen, int version, int options, void * userdata, struct roar_dl_lhandle * lhandle) { |
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| 236 | |
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| 237 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = ?", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
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| 238 | |
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| 239 | switch (fn) { |
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| 240 | case ROAR_DL_FN_PROTO: |
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| 241 | if ( subtype != ROAR_DL_PROTO_SUBTYPE ) { |
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| 242 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=TYPEMM", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
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| 243 | |
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| 244 | roar_err_set(ROAR_ERROR_TYPEMM); |
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| 245 | return -1; |
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| 246 | } |
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| 247 | if ( objectlen != ROAR_DL_PROTO_SIZE ) { |
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| 248 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=BADLIB", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
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| 249 | roar_err_set(ROAR_ERROR_BADLIB); |
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| 250 | return -1; |
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| 251 | } |
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| 252 | if ( version != ROAR_DL_PROTO_VERSION ) { |
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| 253 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=BADVERSION", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
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| 254 | roar_err_set(ROAR_ERROR_BADVERSION); |
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| 255 | return -1; |
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| 256 | } |
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| 257 | switch (action) { |
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| 258 | case ROAR_DL_FNREG: |
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| 259 | return clients_register_proto_common(object, lhandle); |
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| 260 | break; |
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| 261 | case ROAR_DL_FNUNREG: |
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| 262 | return clients_unregister_proto(((const struct roard_proto *)object)->proto); |
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| 263 | break; |
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| 264 | } |
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| 265 | break; |
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| 266 | } |
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| 267 | |
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| 268 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=NOTSUP", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
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| 269 | roar_err_set(ROAR_ERROR_NOTSUP); |
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| 270 | return -1; |
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| 271 | } |
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| 272 | |
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[3353] | 273 | //ll |
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