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

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