code.delx.au - pulseaudio/blob - src/pulsecore/autoload.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include <pulse/xmalloc.h>
  33
  34 #include <pulsecore/module.h>
  35 #include <pulsecore/memchunk.h>
  36 #include <pulsecore/sound-file.h>
  37 #include <pulsecore/log.h>
  38 #include <pulsecore/macro.h>
  39 #include <pulsecore/core-scache.h>
  40 #include <pulsecore/core-subscribe.h>
  41
  42 #include "autoload.h"
  43
  44 static void entry_free(pa_autoload_entry *e) {
  45     pa_assert(e);
  46     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_REMOVE, PA_INVALID_INDEX);
  47     pa_xfree(e->name);
  48     pa_xfree(e->module);
  49     pa_xfree(e->argument);
  50     pa_xfree(e);
  51 }
  52
  53 static void entry_remove_and_free(pa_autoload_entry *e) {
  54     pa_assert(e);
  55     pa_assert(e->core);
  56
  57     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
  58     pa_hashmap_remove(e->core->autoload_hashmap, e->name);
  59     entry_free(e);
  60 }
  61
  62 static pa_autoload_entry* entry_new(pa_core *c, const char *name) {
  63     pa_autoload_entry *e = NULL;
  64
  65     pa_core_assert_ref(c);
  66     pa_assert(name);
  67
  68     if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
  69         return NULL;
  70
  71     e = pa_xnew(pa_autoload_entry, 1);
  72     e->core = c;
  73     e->name = pa_xstrdup(name);
  74     e->module = e->argument = NULL;
  75     e->in_action = 0;
  76
  77     if (!c->autoload_hashmap)
  78         c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  79     pa_assert(c->autoload_hashmap);
  80
  81     pa_hashmap_put(c->autoload_hashmap, e->name, e);
  82
  83     if (!c->autoload_idxset)
  84         c->autoload_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  85     pa_idxset_put(c->autoload_idxset, e, &e->index);
  86
  87     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  88
  89     return e;
  90 }
  91
  92 int pa_autoload_add(pa_core *c, const char*name, pa_namereg_type_t type, const char*module, const char *argument, uint32_t *idx) {
  93     pa_autoload_entry *e = NULL;
  94
  95     pa_assert(c);
  96     pa_assert(name);
  97     pa_assert(module);
  98     pa_assert(type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE);
  99
 100     if (!(e = entry_new(c, name)))
 101         return -1;
 102
 103     e->module = pa_xstrdup(module);
 104     e->argument = pa_xstrdup(argument);
 105     e->type = type;
 106
 107     if (idx)
 108         *idx = e->index;
 109
 110     return 0;
 111 }
 112
 113 int pa_autoload_remove_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
 114     pa_autoload_entry *e;
 115
 116     pa_assert(c);
 117     pa_assert(name);
 118     pa_assert(type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE);
 119
 120     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 121         return -1;
 122
 123     entry_remove_and_free(e);
 124     return 0;
 125 }
 126
 127 int pa_autoload_remove_by_index(pa_core *c, uint32_t idx) {
 128     pa_autoload_entry *e;
 129
 130     pa_assert(c);
 131     pa_assert(idx != PA_IDXSET_INVALID);
 132
 133     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
 134         return -1;
 135
 136     entry_remove_and_free(e);
 137     return 0;
 138 }
 139
 140 void pa_autoload_request(pa_core *c, const char *name, pa_namereg_type_t type) {
 141     pa_autoload_entry *e;
 142     pa_module *m;
 143
 144     pa_assert(c);
 145     pa_assert(name);
 146
 147     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || (e->type != type))
 148         return;
 149
 150     if (e->in_action)
 151         return;
 152
 153     e->in_action = 1;
 154
 155     if (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE) {
 156         if ((m = pa_module_load(c, e->module, e->argument)))
 157             m->auto_unload = 1;
 158     }
 159
 160     e->in_action = 0;
 161 }
 162
 163 static void free_func(void *p, PA_GCC_UNUSED void *userdata) {
 164     pa_autoload_entry *e = p;
 165     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
 166     entry_free(e);
 167 }
 168
 169 void pa_autoload_free(pa_core *c) {
 170
 171     if (c->autoload_hashmap) {
 172         pa_hashmap_free(c->autoload_hashmap, free_func, NULL);
 173         c->autoload_hashmap = NULL;
 174     }
 175
 176     if (c->autoload_idxset) {
 177         pa_idxset_free(c->autoload_idxset, NULL, NULL);
 178         c->autoload_idxset = NULL;
 179     }
 180 }
 181
 182 const pa_autoload_entry* pa_autoload_get_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
 183     pa_autoload_entry *e;
 184
 185     pa_core_assert_ref(c);
 186     pa_assert(name);
 187
 188     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 189         return NULL;
 190
 191     return e;
 192 }
 193
 194 const pa_autoload_entry* pa_autoload_get_by_index(pa_core *c, uint32_t idx) {
 195     pa_autoload_entry *e;
 196
 197     pa_core_assert_ref(c);
 198     pa_assert(idx != PA_IDXSET_INVALID);
 199
 200     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
 201         return NULL;
 202
 203     return e;
 204 }