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 Lesser 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 Lesser 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 #include <sys/types.h>
  31 #include <dirent.h>
  32 #include <sys/stat.h>
  33 #include <errno.h>
  34 #include <limits.h>
  35 #include <glob.h>
  36
  37 #include "scache.h"
  38 #include "sink-input.h"
  39 #include "mainloop.h"
  40 #include "sample-util.h"
  41 #include "play-memchunk.h"
  42 #include "xmalloc.h"
  43 #include "subscribe.h"
  44 #include "namereg.h"
  45 #include "sound-file.h"
  46 #include "util.h"
  47 #include "log.h"
  48
  49 #define UNLOAD_POLL_TIME 2
  50
  51 static void timeout_callback(struct pa_mainloop_api *m, struct pa_time_event*e, const struct timeval *tv, void *userdata) {
  52     struct pa_core *c = userdata;
  53     struct timeval ntv;
  54     assert(c && c->mainloop == m && c->scache_auto_unload_event == e);
  55
  56     pa_scache_unload_unused(c);
  57
  58     gettimeofday(&ntv, NULL);
  59     ntv.tv_sec += UNLOAD_POLL_TIME;
  60     m->time_restart(e, &ntv);
  61 }
  62
  63 static void free_entry(struct pa_scache_entry *e) {
  64     assert(e);
  65     pa_namereg_unregister(e->core, e->name);
  66     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  67     pa_xfree(e->name);
  68     pa_xfree(e->filename);
  69     if (e->memchunk.memblock)
  70         pa_memblock_unref(e->memchunk.memblock);
  71     pa_xfree(e);
  72 }
  73
  74 static struct pa_scache_entry* scache_add_item(struct pa_core *c, const char *name) {
  75     struct pa_scache_entry *e;
  76     assert(c && name);
  77
  78     if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
  79         if (e->memchunk.memblock)
  80             pa_memblock_unref(e->memchunk.memblock);
  81
  82         pa_xfree(e->filename);
  83
  84         assert(e->core == c);
  85
  86         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
  87     } else {
  88         e = pa_xmalloc(sizeof(struct pa_scache_entry));
  89
  90         if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
  91             pa_xfree(e);
  92             return NULL;
  93         }
  94
  95         e->name = pa_xstrdup(name);
  96         e->core = c;
  97
  98         if (!c->scache) {
  99             c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 100             assert(c->scache);
 101         }
 102
 103         pa_idxset_put(c->scache, e, &e->index);
 104
 105         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
 106     }
 107
 108     e->volume = PA_VOLUME_NORM;
 109     e->last_used_time = 0;
 110     e->memchunk.memblock = NULL;
 111     e->memchunk.index = e->memchunk.length = 0;
 112     e->filename = NULL;
 113     e->lazy = 0;
 114     e->last_used_time = 0;
 115
 116     memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
 117
 118     return e;
 119 }
 120
 121 int pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
 122     struct pa_scache_entry *e;
 123     assert(c && name);
 124
 125     if (!(e = scache_add_item(c, name)))
 126         return -1;
 127
 128     if (ss)
 129         e->sample_spec = *ss;
 130
 131     if (chunk) {
 132         e->memchunk = *chunk;
 133         pa_memblock_ref(e->memchunk.memblock);
 134     }
 135
 136     if (index)
 137         *index = e->index;
 138
 139     return 0;
 140 }
 141
 142 int pa_scache_add_file(struct pa_core *c, const char *name, const char *filename, uint32_t *index) {
 143     struct pa_sample_spec ss;
 144     struct pa_memchunk chunk;
 145     int r;
 146
 147     if (pa_sound_file_load(filename, &ss, &chunk, c->memblock_stat) < 0)
 148         return -1;
 149
 150     r = pa_scache_add_item(c, name, &ss, &chunk, index);
 151     pa_memblock_unref(chunk.memblock);
 152
 153     return r;
 154 }
 155
 156 int pa_scache_add_file_lazy(struct pa_core *c, const char *name, const char *filename, uint32_t *index) {
 157     struct pa_scache_entry *e;
 158     assert(c && name);
 159
 160     if (!(e = scache_add_item(c, name)))
 161         return -1;
 162
 163     e->lazy = 1;
 164     e->filename = pa_xstrdup(filename);
 165
 166     if (!c->scache_auto_unload_event) {
 167         struct timeval ntv;
 168         gettimeofday(&ntv, NULL);
 169         ntv.tv_sec += UNLOAD_POLL_TIME;
 170         c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
 171     }
 172
 173     return 0;
 174 }
 175
 176 int pa_scache_remove_item(struct pa_core *c, const char *name) {
 177     struct pa_scache_entry *e;
 178     assert(c && name);
 179
 180     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 181         return -1;
 182
 183     if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
 184         assert(0);
 185
 186     free_entry(e);
 187     return 0;
 188 }
 189
 190 static void free_cb(void *p, void *userdata) {
 191     struct pa_scache_entry *e = p;
 192     assert(e);
 193     free_entry(e);
 194 }
 195
 196 void pa_scache_free(struct pa_core *c) {
 197     assert(c);
 198
 199     if (c->scache) {
 200         pa_idxset_free(c->scache, free_cb, NULL);
 201         c->scache = NULL;
 202     }
 203
 204     if (c->scache_auto_unload_event)
 205         c->mainloop->time_free(c->scache_auto_unload_event);
 206 }
 207
 208 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 209     struct pa_scache_entry *e;
 210     char *t;
 211     assert(c && name && sink);
 212
 213     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
 214         return -1;
 215
 216     if (e->lazy && !e->memchunk.memblock) {
 217         if (pa_sound_file_load(e->filename, &e->sample_spec, &e->memchunk, c->memblock_stat) < 0)
 218             return -1;
 219
 220         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 221     }
 222
 223     if (!e->memchunk.memblock)
 224         return -1;
 225
 226     t = pa_sprintf_malloc("sample:%s", name);
 227     if (pa_play_memchunk(sink, t, &e->sample_spec, &e->memchunk, pa_volume_multiply(volume, e->volume)) < 0) {
 228         free(t);
 229         return -1;
 230     }
 231
 232     free(t);
 233
 234     if (e->lazy)
 235         time(&e->last_used_time);
 236
 237     return 0;
 238 }
 239
 240 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 241     struct pa_scache_entry *e;
 242     assert(c && id != PA_IDXSET_INVALID);
 243
 244     if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
 245         return NULL;
 246
 247     return e->name;
 248 }
 249
 250 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 251     struct pa_scache_entry *e;
 252     assert(c && name);
 253
 254     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 255         return PA_IDXSET_INVALID;
 256
 257     return e->index;
 258 }
 259
 260 uint32_t pa_scache_total_size(struct pa_core *c) {
 261     struct pa_scache_entry *e;
 262     uint32_t index, sum = 0;
 263     assert(c);
 264
 265     if (!c->scache || !pa_idxset_ncontents(c->scache))
 266         return 0;
 267
 268     for (e = pa_idxset_first(c->scache, &index); e; e = pa_idxset_next(c->scache, &index))
 269         if (e->memchunk.memblock)
 270             sum += e->memchunk.length;
 271
 272     return sum;
 273 }
 274
 275 void pa_scache_unload_unused(struct pa_core *c) {
 276     struct pa_scache_entry *e;
 277     time_t now;
 278     uint32_t index;
 279     assert(c);
 280
 281     if (!c->scache || !pa_idxset_ncontents(c->scache))
 282         return;
 283
 284     time(&now);
 285
 286     for (e = pa_idxset_first(c->scache, &index); e; e = pa_idxset_next(c->scache, &index)) {
 287
 288         if (!e->lazy || !e->memchunk.memblock)
 289             continue;
 290
 291         if (e->last_used_time + c->scache_idle_time > now)
 292             continue;
 293
 294         pa_memblock_unref(e->memchunk.memblock);
 295         e->memchunk.memblock = NULL;
 296         e->memchunk.index = e->memchunk.length = 0;
 297
 298         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 299     }
 300 }
 301
 302 static void add_file(struct pa_core *c, const char *pathname) {
 303     struct stat st;
 304     const char *e;
 305
 306     if (!(e = strrchr(pathname, '/')))
 307         e = pathname;
 308     else
 309         e++;
 310
 311     if (stat(pathname, &st) < 0) {
 312         pa_log(__FILE__": stat('%s') failed: %s\n", pathname, strerror(errno));
 313         return;
 314     }
 315
 316     if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 317         pa_scache_add_file_lazy(c, e, pathname, NULL);
 318 }
 319
 320 int pa_scache_add_directory_lazy(struct pa_core *c, const char *pathname) {
 321     DIR *dir;
 322     assert(c && pathname);
 323
 324     /* First try to open this as directory */
 325     if (!(dir = opendir(pathname))) {
 326         glob_t p;
 327         unsigned int i;
 328         /* If that fails, try to open it as shell glob */
 329
 330         if (glob(pathname, GLOB_ERR|GLOB_NOSORT, NULL, &p) < 0) {
 331             pa_log(__FILE__": Failed to open directory: %s\n", strerror(errno));
 332             return -1;
 333         }
 334
 335         for (i = 0; i < p.gl_pathc; i++)
 336             add_file(c, p.gl_pathv[i]);
 337
 338         globfree(&p);
 339     } else {
 340         struct dirent *e;
 341
 342         while ((e = readdir(dir))) {
 343             char p[PATH_MAX];
 344
 345             if (e->d_name[0] == '.')
 346                 continue;
 347
 348             snprintf(p, sizeof(p), "%s/%s", pathname, e->d_name);
 349             add_file(c, p);
 350         }
 351     }
 352
 353     closedir(dir);
 354     return 0;
 355 }