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 #include "namereg.h"
  39 #include "sound-file.h"
  40 #include "util.h"
  41
  42 #define UNLOAD_POLL_TIME 2
  43
  44 static void timeout_callback(struct pa_mainloop_api *m, struct pa_time_event*e, const struct timeval *tv, void *userdata) {
  45     struct pa_core *c = userdata;
  46     struct timeval ntv;
  47     assert(c && c->mainloop == m && c->scache_auto_unload_event == e);
  48
  49     pa_scache_unload_unused(c);
  50
  51     gettimeofday(&ntv, NULL);
  52     ntv.tv_sec += UNLOAD_POLL_TIME;
  53     m->time_restart(e, &ntv);
  54 }
  55
  56 static void free_entry(struct pa_scache_entry *e) {
  57     assert(e);
  58     pa_namereg_unregister(e->core, e->name);
  59     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  60     pa_xfree(e->name);
  61     pa_xfree(e->filename);
  62     if (e->memchunk.memblock)
  63         pa_memblock_unref(e->memchunk.memblock);
  64     pa_xfree(e);
  65 }
  66
  67 static struct pa_scache_entry* scache_add_item(struct pa_core *c, const char *name) {
  68     struct pa_scache_entry *e;
  69     assert(c && name);
  70
  71     if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
  72         if (e->memchunk.memblock)
  73             pa_memblock_unref(e->memchunk.memblock);
  74
  75         pa_xfree(e->filename);
  76
  77         assert(e->core == c);
  78
  79         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
  80     } else {
  81         e = pa_xmalloc(sizeof(struct pa_scache_entry));
  82
  83         if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
  84             pa_xfree(e);
  85             return NULL;
  86         }
  87
  88         e->name = pa_xstrdup(name);
  89         e->core = c;
  90
  91         if (!c->scache) {
  92             c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  93             assert(c->scache);
  94         }
  95
  96         pa_idxset_put(c->scache, e, &e->index);
  97
  98         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  99     }
 100
 101     e->volume = PA_VOLUME_NORM;
 102     e->last_used_time = 0;
 103     e->memchunk.memblock = NULL;
 104     e->memchunk.index = e->memchunk.length = 0;
 105     e->filename = NULL;
 106     e->lazy = 0;
 107     e->last_used_time = 0;
 108
 109     memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
 110
 111     return e;
 112 }
 113
 114 int pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
 115     struct pa_scache_entry *e;
 116     assert(c && name);
 117
 118     if (!(e = scache_add_item(c, name)))
 119         return -1;
 120
 121     if (ss)
 122         e->sample_spec = *ss;
 123
 124     if (chunk) {
 125         e->memchunk = *chunk;
 126         pa_memblock_ref(e->memchunk.memblock);
 127     }
 128
 129     if (index)
 130         *index = e->index;
 131
 132     return 0;
 133 }
 134
 135 int pa_scache_add_file(struct pa_core *c, const char *name, const char *filename, uint32_t *index) {
 136     struct pa_sample_spec ss;
 137     struct pa_memchunk chunk;
 138     int r;
 139
 140     if (pa_sound_file_load(filename, &ss, &chunk, c->memblock_stat) < 0)
 141         return -1;
 142
 143     r = pa_scache_add_item(c, name, &ss, &chunk, index);
 144     pa_memblock_unref(chunk.memblock);
 145
 146     return r;
 147 }
 148
 149 int pa_scache_add_file_lazy(struct pa_core *c, const char *name, const char *filename, uint32_t *index) {
 150     struct pa_scache_entry *e;
 151     assert(c && name);
 152
 153     if (!(e = scache_add_item(c, name)))
 154         return -1;
 155
 156     e->lazy = 1;
 157     e->filename = pa_xstrdup(filename);
 158
 159     if (!c->scache_auto_unload_event) {
 160         struct timeval ntv;
 161         gettimeofday(&ntv, NULL);
 162         ntv.tv_sec += UNLOAD_POLL_TIME;
 163         c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
 164     }
 165
 166     return 0;
 167 }
 168
 169 int pa_scache_remove_item(struct pa_core *c, const char *name) {
 170     struct pa_scache_entry *e;
 171     assert(c && name);
 172
 173     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 174         return -1;
 175
 176     if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
 177         assert(0);
 178
 179     free_entry(e);
 180     return 0;
 181 }
 182
 183 static void free_cb(void *p, void *userdata) {
 184     struct pa_scache_entry *e = p;
 185     assert(e);
 186     free_entry(e);
 187 }
 188
 189 void pa_scache_free(struct pa_core *c) {
 190     assert(c);
 191
 192     if (c->scache) {
 193         pa_idxset_free(c->scache, free_cb, NULL);
 194         c->scache = NULL;
 195     }
 196
 197     if (c->scache_auto_unload_event)
 198         c->mainloop->time_free(c->scache_auto_unload_event);
 199 }
 200
 201 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 202     struct pa_scache_entry *e;
 203     char *t;
 204     assert(c && name && sink);
 205
 206     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
 207         return -1;
 208
 209     if (e->lazy && !e->memchunk.memblock) {
 210         if (pa_sound_file_load(e->filename, &e->sample_spec, &e->memchunk, c->memblock_stat) < 0)
 211             return -1;
 212
 213         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 214     }
 215
 216     if (!e->memchunk.memblock)
 217         return -1;
 218
 219     t = pa_sprintf_malloc("sample:%s", name);
 220     if (pa_play_memchunk(sink, t, &e->sample_spec, &e->memchunk, pa_volume_multiply(volume, e->volume)) < 0) {
 221         free(t);
 222         return -1;
 223     }
 224
 225     free(t);
 226
 227     if (e->lazy)
 228         time(&e->last_used_time);
 229
 230     return 0;
 231 }
 232
 233 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 234     struct pa_scache_entry *e;
 235     assert(c && id != PA_IDXSET_INVALID);
 236
 237     if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
 238         return NULL;
 239
 240     return e->name;
 241 }
 242
 243 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 244     struct pa_scache_entry *e;
 245     assert(c && name);
 246
 247     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 248         return PA_IDXSET_INVALID;
 249
 250     return e->index;
 251 }
 252
 253 uint32_t pa_scache_total_size(struct pa_core *c) {
 254     struct pa_scache_entry *e;
 255     uint32_t index, sum = 0;
 256     assert(c);
 257
 258     if (!c->scache || !pa_idxset_ncontents(c->scache))
 259         return 0;
 260
 261     for (e = pa_idxset_first(c->scache, &index); e; e = pa_idxset_next(c->scache, &index))
 262         if (e->memchunk.memblock)
 263             sum += e->memchunk.length;
 264
 265     return sum;
 266 }
 267
 268 void pa_scache_unload_unused(struct pa_core *c) {
 269     struct pa_scache_entry *e;
 270     time_t now;
 271     uint32_t index;
 272     assert(c);
 273
 274     if (!c->scache || !pa_idxset_ncontents(c->scache))
 275         return;
 276
 277     time(&now);
 278
 279     for (e = pa_idxset_first(c->scache, &index); e; e = pa_idxset_next(c->scache, &index)) {
 280
 281         if (!e->lazy || !e->memchunk.memblock)
 282             continue;
 283
 284         if (e->last_used_time + c->scache_idle_time > now)
 285             continue;
 286
 287         pa_memblock_unref(e->memchunk.memblock);
 288         e->memchunk.memblock = NULL;
 289         e->memchunk.index = e->memchunk.length = 0;
 290
 291         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 292     }
 293 }