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 void entry_remove_and_free(struct pa_autoload_entry *e) {
  49     assert(e && e->core);
  50
  51     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
  52     pa_hashmap_remove(e->core->autoload_hashmap, e->name);
  53     entry_free(e);
  54 }
  55
  56 static struct pa_autoload_entry* entry_new(struct pa_core *c, const char *name) {
  57     struct pa_autoload_entry *e = NULL;
  58     assert(c && name);
  59
  60     if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
  61         return NULL;
  62
  63     e = pa_xmalloc(sizeof(struct pa_autoload_entry));
  64     e->core = c;
  65     e->name = pa_xstrdup(name);
  66     e->module = e->argument = NULL;
  67     e->in_action = 0;
  68
  69     if (!c->autoload_hashmap)
  70         c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  71     assert(c->autoload_hashmap);
  72
  73     pa_hashmap_put(c->autoload_hashmap, e->name, e);
  74
  75     if (!c->autoload_idxset)
  76         c->autoload_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  77     pa_idxset_put(c->autoload_idxset, e, &e->index);
  78
  79     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  80
  81     return e;
  82 }
  83
  84 int pa_autoload_add(struct pa_core *c, const char*name, enum pa_namereg_type type, const char*module, const char *argument, uint32_t *index) {
  85     struct pa_autoload_entry *e = NULL;
  86     assert(c && name && module && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
  87
  88     if (!(e = entry_new(c, name)))
  89         return -1;
  90
  91     e->module = pa_xstrdup(module);
  92     e->argument = pa_xstrdup(argument);
  93     e->type = type;
  94
  95     if (index)
  96         *index = e->index;
  97
  98     return 0;
  99 }
 100
 101 int pa_autoload_remove_by_name(struct pa_core *c, const char*name, enum pa_namereg_type type) {
 102     struct pa_autoload_entry *e;
 103     assert(c && name && type);
 104
 105     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 106         return -1;
 107
 108     entry_remove_and_free(e);
 109     return 0;
 110 }
 111
 112 int pa_autoload_remove_by_index(struct pa_core *c, uint32_t index) {
 113     struct pa_autoload_entry *e;
 114     assert(c && index != PA_IDXSET_INVALID);
 115
 116     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, index)))
 117         return -1;
 118
 119     entry_remove_and_free(e);
 120     return 0;
 121 }
 122
 123 void pa_autoload_request(struct pa_core *c, const char *name, enum pa_namereg_type type) {
 124     struct pa_autoload_entry *e;
 125     struct pa_module *m;
 126     assert(c && name);
 127
 128     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || (e->type != type))
 129         return;
 130
 131     if (e->in_action)
 132         return;
 133
 134     e->in_action = 1;
 135
 136     if (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE) {
 137         if ((m = pa_module_load(c, e->module, e->argument)))
 138             m->auto_unload = 1;
 139     }
 140
 141     e->in_action = 0;
 142 }
 143
 144 static void free_func(void *p, void *userdata) {
 145     struct pa_autoload_entry *e = p;
 146     pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
 147     entry_free(e);
 148 }
 149
 150 void pa_autoload_free(struct pa_core *c) {
 151     if (c->autoload_hashmap) {
 152         pa_hashmap_free(c->autoload_hashmap, free_func, NULL);
 153         c->autoload_hashmap = NULL;
 154     }
 155
 156     if (c->autoload_idxset) {
 157         pa_idxset_free(c->autoload_idxset, NULL, NULL);
 158         c->autoload_idxset = NULL;
 159     }
 160 }
 161
 162 const struct pa_autoload_entry* pa_autoload_get_by_name(struct pa_core *c, const char*name, enum pa_namereg_type type) {
 163     struct pa_autoload_entry *e;
 164     assert(c && name);
 165
 166     if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
 167         return NULL;
 168
 169     return e;
 170 }
 171
 172 const struct pa_autoload_entry* pa_autoload_get_by_index(struct pa_core *c, uint32_t index) {
 173     struct pa_autoload_entry *e;
 174     assert(c && index != PA_IDXSET_INVALID);
 175
 176     if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, index)))
 177         return NULL;
 178
 179     return e;
 180 }