code.delx.au - pulseaudio/blob - polyp/autoload.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU 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   polypaudio 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 General Public License
  17   along with polypaudio; 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 "autoload.h"
  31 #include "module.h"
  32 #include "xmalloc.h"
  33 #include "memchunk.h"
  34 #include "sound-file.h"
  35 #include "log.h"
  36 #include "scache.h"
  37 #include "subscribe.h"
  38
  39 static void entry_free(struct pa_autoload_entry *e) {
  40     assert(e);
  41     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_REMOVE, PA_INVALID_INDEX);
  42     pa_xfree(e->name);
  43     pa_xfree(e->module);
  44     pa_xfree(e->argument);
  45     pa_xfree(e);
  46 }
  47
  48 static struct pa_autoload_entry* entry_new(struct pa_core *c, const char *name) {
  49     struct pa_autoload_entry *e = NULL;
  50     assert(c && name);
  51
  52     if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
  53         return NULL;
  54
  55     e = pa_xmalloc(sizeof(struct pa_autoload_entry));
  56     e->core = c;
  57     e->name = pa_xstrdup(name);
  58     e->module = e->argument = NULL;
  59     e->in_action = 0;
  60
  61     if (!c->autoload_hashmap)
  62         c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  63     assert(c->autoload_hashmap);
  64
  65     pa_hashmap_put(c->autoload_hashmap, e->name, e);
  66
  67     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, PA_INVALID_INDEX);
  68
  69     return e;
  70 }
  71
  72 int pa_autoload_add(struct pa_core *c, const char*name, enum pa_namereg_type type, const char*module, const char *argument) {
  73     struct pa_autoload_entry *e = NULL;
  74     assert(c && name && module && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
  75
  76     if (!(e = entry_new(c, name)))
  77         return -1;
  78
  79     e->module = pa_xstrdup(module);
  80     e->argument = pa_xstrdup(argument);
  81     e->type = type;
  82     return 0;
  83 }
  84
  85 int pa_autoload_remove(struct pa_core *c, const char*name, enum pa_namereg_type type) {
  86     struct pa_autoload_entry *e;
  87     assert(c && name && type);
  88
  89     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)))
  90         return -1;
  91
  92     pa_hashmap_remove(c->autoload_hashmap, e->name);
  93     entry_free(e);
  94     return 0;
  95 }
  96
  97 void pa_autoload_request(struct pa_core *c, const char *name, enum pa_namereg_type type) {
  98     struct pa_autoload_entry *e;
  99     struct pa_module *m;
 100     assert(c && name);
 101
 102     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || (e->type != type))
 103         return;
 104
 105     if (e->in_action)
 106         return;
 107
 108     e->in_action = 1;
 109
 110     if (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE) {
 111         if ((m = pa_module_load(c, e->module, e->argument)))
 112             m->auto_unload = 1;
 113     }
 114
 115     e->in_action = 0;
 116 }
 117
 118 static void free_func(void *p, void *userdata) {
 119     struct pa_autoload_entry *e = p;
 120     entry_free(e);
 121 }
 122
 123 void pa_autoload_free(struct pa_core *c) {
 124     if (!c->autoload_hashmap)
 125         return;
 126
 127     pa_hashmap_free(c->autoload_hashmap, free_func, NULL);
 128 }