code.delx.au - pulseaudio/blob - polyp/scache.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 #include <stdio.h>
  30
  31 #include "scache.h"
  32 #include "sink-input.h"
  33 #include "mainloop.h"
  34 #include "sample-util.h"
  35 #include "play-memchunk.h"
  36 #include "xmalloc.h"
  37 #include "subscribe.h"
  38
  39 static void free_entry(struct pa_scache_entry *e) {
  40     assert(e);
  41     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  42     pa_xfree(e->name);
  43     if (e->memchunk.memblock)
  44         pa_memblock_unref(e->memchunk.memblock);
  45     pa_xfree(e);
  46 }
  47
  48 void pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
  49     struct pa_scache_entry *e;
  50     int put;
  51     assert(c && name);
  52
  53     if (c->scache_hashmap && (e = pa_hashmap_get(c->scache_hashmap, name))) {
  54         put = 0;
  55         if (e->memchunk.memblock)
  56             pa_memblock_unref(e->memchunk.memblock);
  57         assert(e->core == c);
  58     } else {
  59         put = 1;
  60         e = pa_xmalloc(sizeof(struct pa_scache_entry));
  61         e->name = pa_xstrdup(name);
  62         e->core = c;
  63     }
  64
  65     e->volume = 0x100;
  66
  67     if (ss)
  68         e->sample_spec = *ss;
  69     else
  70         memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
  71
  72     if (chunk) {
  73         e->memchunk = *chunk;
  74         pa_memblock_ref(e->memchunk.memblock);
  75     } else {
  76         e->memchunk.memblock = NULL;
  77         e->memchunk.index = e->memchunk.length = 0;
  78     }
  79
  80     if (put) {
  81         if (!c->scache_hashmap) {
  82             c->scache_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  83             assert(c->scache_hashmap);
  84         }
  85
  86         if (!c->scache_idxset) {
  87             c->scache_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  88             assert(c->scache_idxset);
  89         }
  90
  91         pa_idxset_put(c->scache_idxset, e, &e->index);
  92         pa_hashmap_put(c->scache_hashmap, e->name, e);
  93
  94         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  95     }
  96
  97     if (index)
  98         *index = e->index;
  99 }
 100
 101 int pa_scache_remove_item(struct pa_core *c, const char *name) {
 102     struct pa_scache_entry *e;
 103     assert(c && name);
 104
 105     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 106         return -1;
 107
 108     pa_hashmap_remove(c->scache_hashmap, name);
 109     if (pa_idxset_remove_by_data(c->scache_idxset, e, NULL) != e)
 110         assert(0);
 111
 112     free_entry(e);
 113     return 0;
 114 }
 115
 116 static void free_cb(void *p, void *userdata) {
 117     struct pa_scache_entry *e = p;
 118     assert(e);
 119     free_entry(e);
 120 }
 121
 122 void pa_scache_free(struct pa_core *c) {
 123     assert(c);
 124
 125     if (c->scache_hashmap) {
 126         pa_hashmap_free(c->scache_hashmap, free_cb, NULL);
 127         c->scache_hashmap = NULL;
 128     }
 129
 130     if (c->scache_idxset) {
 131         pa_idxset_free(c->scache_idxset, NULL, NULL);
 132         c->scache_idxset = NULL;
 133     }
 134 }
 135
 136 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 137     struct pa_scache_entry *e;
 138     assert(c && name && sink);
 139
 140     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 141         return -1;
 142
 143     if (!e->memchunk.memblock)
 144         return -1;
 145
 146     if (pa_play_memchunk(sink, name, &e->sample_spec, &e->memchunk, pa_volume_multiply(volume, e->volume)) < 0)
 147         return -1;
 148
 149     return 0;
 150 }
 151
 152 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 153     struct pa_scache_entry *e;
 154     assert(c && id != PA_IDXSET_INVALID);
 155
 156     if (!c->scache_idxset || !(e = pa_idxset_get_by_index(c->scache_idxset, id)))
 157         return NULL;
 158
 159     return e->name;
 160
 161 }
 162
 163 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 164     struct pa_scache_entry *e;
 165     assert(c && name);
 166
 167     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 168         return PA_IDXSET_INVALID;
 169
 170     return e->index;
 171 }