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

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