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 <assert.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/module.h>
  36 #include <pulsecore/memchunk.h>
  37 #include <pulsecore/sound-file.h>
  38 #include <pulsecore/log.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     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     assert(e && e->core);
  55
  56     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
  57     pa_hashmap_remove(e->core->autoload_hashmap, e->name);
  58     entry_free(e);
  59 }
  60
  61 static pa_autoload_entry* entry_new(pa_core *c, const char *name) {
  62     pa_autoload_entry *e = NULL;
  63     assert(c && name);
  64
  65     if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
  66         return NULL;
  67
  68     e = pa_xmalloc(sizeof(pa_autoload_entry));
  69     e->core = c;
  70     e->name = pa_xstrdup(name);
  71     e->module = e->argument = NULL;
  72     e->in_action = 0;
  73
  74     if (!c->autoload_hashmap)
  75         c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  76     assert(c->autoload_hashmap);
  77
  78     pa_hashmap_put(c->autoload_hashmap, e->name, e);
  79
  80     if (!c->autoload_idxset)
  81         c->autoload_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  82     pa_idxset_put(c->autoload_idxset, e, &e->index);
  83
  84     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  85
  86     return e;
  87 }
  88
  89 int pa_autoload_add(pa_core *c, const char*name, pa_namereg_type_t type, const char*module, const char *argument, uint32_t *idx) {
  90     pa_autoload_entry *e = NULL;
  91     assert(c && name && module && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
  92
  93     if (!(e = entry_new(c, name)))
  94         return -1;
  95
  96     e->module = pa_xstrdup(module);
  97     e->argument = pa_xstrdup(argument);
  98     e->type = type;
  99
 100     if (idx)
 101         *idx = e->index;
 102
 103     return 0;
 104 }
 105
 106 int pa_autoload_remove_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
 107     pa_autoload_entry *e;
 108     assert(c && name && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
 109
 110     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 111         return -1;
 112
 113     entry_remove_and_free(e);
 114     return 0;
 115 }
 116
 117 int pa_autoload_remove_by_index(pa_core *c, uint32_t idx) {
 118     pa_autoload_entry *e;
 119     assert(c && idx != PA_IDXSET_INVALID);
 120
 121     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
 122         return -1;
 123
 124     entry_remove_and_free(e);
 125     return 0;
 126 }
 127
 128 void pa_autoload_request(pa_core *c, const char *name, pa_namereg_type_t type) {
 129     pa_autoload_entry *e;
 130     pa_module *m;
 131     assert(c && name);
 132
 133     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || (e->type != type))
 134         return;
 135
 136     if (e->in_action)
 137         return;
 138
 139     e->in_action = 1;
 140
 141     if (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE) {
 142         if ((m = pa_module_load(c, e->module, e->argument)))
 143             m->auto_unload = 1;
 144     }
 145
 146     e->in_action = 0;
 147 }
 148
 149 static void free_func(void *p, PA_GCC_UNUSED void *userdata) {
 150     pa_autoload_entry *e = p;
 151     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
 152     entry_free(e);
 153 }
 154
 155 void pa_autoload_free(pa_core *c) {
 156     if (c->autoload_hashmap) {
 157         pa_hashmap_free(c->autoload_hashmap, free_func, NULL);
 158         c->autoload_hashmap = NULL;
 159     }
 160
 161     if (c->autoload_idxset) {
 162         pa_idxset_free(c->autoload_idxset, NULL, NULL);
 163         c->autoload_idxset = NULL;
 164     }
 165 }
 166
 167 const pa_autoload_entry* pa_autoload_get_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
 168     pa_autoload_entry *e;
 169     assert(c && name);
 170
 171     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 172         return NULL;
 173
 174     return e;
 175 }
 176
 177 const pa_autoload_entry* pa_autoload_get_by_index(pa_core *c, uint32_t idx) {
 178     pa_autoload_entry *e;
 179     assert(c && idx != PA_IDXSET_INVALID);
 180
 181     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
 182         return NULL;
 183
 184     return e;
 185 }