code.delx.au - pulseaudio/blob - src/polypcore/core-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
  36 #ifdef HAVE_GLOB_H
  37 #include <glob.h>
  38 #endif
  39
  40 #ifdef HAVE_WINDOWS_H
  41 #include <windows.h>
  42 #endif
  43
  44 #include "core-scache.h"
  45 #include "sink-input.h"
  46 #include <polyp/mainloop.h>
  47 #include "sample-util.h"
  48 #include "play-memchunk.h"
  49 #include "xmalloc.h"
  50 #include "core-subscribe.h"
  51 #include "namereg.h"
  52 #include "sound-file.h"
  53 #include "util.h"
  54 #include "log.h"
  55 #include <polyp/channelmap.h>
  56 #include <polyp/volume.h>
  57
  58 #define UNLOAD_POLL_TIME 2
  59
  60 static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
  61     pa_core *c = userdata;
  62     struct timeval ntv;
  63     assert(c && c->mainloop == m && c->scache_auto_unload_event == e);
  64
  65     pa_scache_unload_unused(c);
  66
  67     pa_gettimeofday(&ntv);
  68     ntv.tv_sec += UNLOAD_POLL_TIME;
  69     m->time_restart(e, &ntv);
  70 }
  71
  72 static void free_entry(pa_scache_entry *e) {
  73     assert(e);
  74     pa_namereg_unregister(e->core, e->name);
  75     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  76     pa_xfree(e->name);
  77     pa_xfree(e->filename);
  78     if (e->memchunk.memblock)
  79         pa_memblock_unref(e->memchunk.memblock);
  80     pa_xfree(e);
  81 }
  82
  83 static pa_scache_entry* scache_add_item(pa_core *c, const char *name) {
  84     pa_scache_entry *e;
  85     assert(c && name);
  86
  87     if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
  88         if (e->memchunk.memblock)
  89             pa_memblock_unref(e->memchunk.memblock);
  90
  91         pa_xfree(e->filename);
  92
  93         assert(e->core == c);
  94
  95         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
  96     } else {
  97         e = pa_xmalloc(sizeof(pa_scache_entry));
  98
  99         if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
 100             pa_xfree(e);
 101             return NULL;
 102         }
 103
 104         e->name = pa_xstrdup(name);
 105         e->core = c;
 106
 107         if (!c->scache) {
 108             c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 109             assert(c->scache);
 110         }
 111
 112         pa_idxset_put(c->scache, e, &e->index);
 113
 114         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
 115     }
 116
 117     pa_cvolume_reset(&e->volume, PA_CHANNELS_MAX);
 118     e->last_used_time = 0;
 119     e->memchunk.memblock = NULL;
 120     e->memchunk.index = e->memchunk.length = 0;
 121     e->filename = NULL;
 122     e->lazy = 0;
 123     e->last_used_time = 0;
 124
 125     memset(&e->sample_spec, 0, sizeof(pa_sample_spec));
 126
 127     return e;
 128 }
 129
 130 int pa_scache_add_item(pa_core *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map, const pa_memchunk *chunk, uint32_t *idx) {
 131     pa_scache_entry *e;
 132     assert(c && name);
 133
 134     if (!(e = scache_add_item(c, name)))
 135         return -1;
 136
 137     if (ss) {
 138         e->sample_spec = *ss;
 139         pa_channel_map_init_auto(&e->channel_map, ss->channels);
 140     }
 141
 142     if (map)
 143         e->channel_map = *map;
 144
 145     if (chunk) {
 146         e->memchunk = *chunk;
 147         pa_memblock_ref(e->memchunk.memblock);
 148     }
 149
 150     if (idx)
 151         *idx = e->index;
 152
 153     return 0;
 154 }
 155
 156 int pa_scache_add_file(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 157     pa_sample_spec ss;
 158     pa_memchunk chunk;
 159     int r;
 160
 161 #ifdef OS_IS_WIN32
 162     char buf[MAX_PATH];
 163
 164     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 165         filename = buf;
 166 #endif
 167
 168     if (pa_sound_file_load(filename, &ss, &chunk, c->memblock_stat) < 0)
 169         return -1;
 170
 171     r = pa_scache_add_item(c, name, &ss, NULL, &chunk, idx);
 172     pa_memblock_unref(chunk.memblock);
 173
 174     return r;
 175 }
 176
 177 int pa_scache_add_file_lazy(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 178     pa_scache_entry *e;
 179
 180 #ifdef OS_IS_WIN32
 181     char buf[MAX_PATH];
 182
 183     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 184         filename = buf;
 185 #endif
 186
 187     assert(c && name);
 188
 189     if (!(e = scache_add_item(c, name)))
 190         return -1;
 191
 192     e->lazy = 1;
 193     e->filename = pa_xstrdup(filename);
 194
 195     if (!c->scache_auto_unload_event) {
 196         struct timeval ntv;
 197         pa_gettimeofday(&ntv);
 198         ntv.tv_sec += UNLOAD_POLL_TIME;
 199         c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
 200     }
 201
 202     if (idx)
 203         *idx = e->index;
 204
 205     return 0;
 206 }
 207
 208 int pa_scache_remove_item(pa_core *c, const char *name) {
 209     pa_scache_entry *e;
 210     assert(c && name);
 211
 212     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 213         return -1;
 214
 215     if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
 216         assert(0);
 217
 218     free_entry(e);
 219     return 0;
 220 }
 221
 222 static void free_cb(void *p, PA_GCC_UNUSED void *userdata) {
 223     pa_scache_entry *e = p;
 224     assert(e);
 225     free_entry(e);
 226 }
 227
 228 void pa_scache_free(pa_core *c) {
 229     assert(c);
 230
 231     if (c->scache) {
 232         pa_idxset_free(c->scache, free_cb, NULL);
 233         c->scache = NULL;
 234     }
 235
 236     if (c->scache_auto_unload_event)
 237         c->mainloop->time_free(c->scache_auto_unload_event);
 238 }
 239
 240 int pa_scache_play_item(pa_core *c, const char *name, pa_sink *sink, const pa_cvolume *volume) {
 241     pa_scache_entry *e;
 242     char *t;
 243     pa_cvolume r;
 244     assert(c && name && sink);
 245
 246     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
 247         return -1;
 248
 249     if (e->lazy && !e->memchunk.memblock) {
 250         if (pa_sound_file_load(e->filename, &e->sample_spec, &e->memchunk, c->memblock_stat) < 0)
 251             return -1;
 252
 253         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 254     }
 255
 256     if (!e->memchunk.memblock)
 257         return -1;
 258
 259     t = pa_sprintf_malloc("sample:%s", name);
 260
 261     if (pa_play_memchunk(sink, t, &e->sample_spec, &e->channel_map, &e->memchunk, pa_sw_cvolume_multiply(&r, volume, &e->volume)) < 0) {
 262         free(t);
 263         return -1;
 264     }
 265
 266     free(t);
 267
 268     if (e->lazy)
 269         time(&e->last_used_time);
 270
 271     return 0;
 272 }
 273
 274 const char * pa_scache_get_name_by_id(pa_core *c, uint32_t id) {
 275     pa_scache_entry *e;
 276     assert(c && id != PA_IDXSET_INVALID);
 277
 278     if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
 279         return NULL;
 280
 281     return e->name;
 282 }
 283
 284 uint32_t pa_scache_get_id_by_name(pa_core *c, const char *name) {
 285     pa_scache_entry *e;
 286     assert(c && name);
 287
 288     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 289         return PA_IDXSET_INVALID;
 290
 291     return e->index;
 292 }
 293
 294 uint32_t pa_scache_total_size(pa_core *c) {
 295     pa_scache_entry *e;
 296     uint32_t idx, sum = 0;
 297     assert(c);
 298
 299     if (!c->scache || !pa_idxset_size(c->scache))
 300         return 0;
 301
 302     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx))
 303         if (e->memchunk.memblock)
 304             sum += e->memchunk.length;
 305
 306     return sum;
 307 }
 308
 309 void pa_scache_unload_unused(pa_core *c) {
 310     pa_scache_entry *e;
 311     time_t now;
 312     uint32_t idx;
 313     assert(c);
 314
 315     if (!c->scache || !pa_idxset_size(c->scache))
 316         return;
 317
 318     time(&now);
 319
 320     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx)) {
 321
 322         if (!e->lazy || !e->memchunk.memblock)
 323             continue;
 324
 325         if (e->last_used_time + c->scache_idle_time > now)
 326             continue;
 327
 328         pa_memblock_unref(e->memchunk.memblock);
 329         e->memchunk.memblock = NULL;
 330         e->memchunk.index = e->memchunk.length = 0;
 331
 332         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 333     }
 334 }
 335
 336 static void add_file(pa_core *c, const char *pathname) {
 337     struct stat st;
 338     const char *e;
 339
 340     e = pa_path_get_filename(pathname);
 341
 342     if (stat(pathname, &st) < 0) {
 343         pa_log(__FILE__": stat('%s') failed: %s\n", pathname, strerror(errno));
 344         return;
 345     }
 346
 347 #if defined(S_ISREG) && defined(S_ISLNK)
 348     if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 349 #endif
 350         pa_scache_add_file_lazy(c, e, pathname, NULL);
 351 }
 352
 353 int pa_scache_add_directory_lazy(pa_core *c, const char *pathname) {
 354     DIR *dir;
 355     assert(c && pathname);
 356
 357     /* First try to open this as directory */
 358     if (!(dir = opendir(pathname))) {
 359 #ifdef HAVE_GLOB_H
 360         glob_t p;
 361         unsigned int i;
 362         /* If that fails, try to open it as shell glob */
 363
 364         if (glob(pathname, GLOB_ERR|GLOB_NOSORT, NULL, &p) < 0) {
 365             pa_log(__FILE__": Failed to open directory: %s\n", strerror(errno));
 366             return -1;
 367         }
 368
 369         for (i = 0; i < p.gl_pathc; i++)
 370             add_file(c, p.gl_pathv[i]);
 371
 372         globfree(&p);
 373 #else
 374         return -1;
 375 #endif
 376     } else {
 377         struct dirent *e;
 378
 379         while ((e = readdir(dir))) {
 380             char p[PATH_MAX];
 381
 382             if (e->d_name[0] == '.')
 383                 continue;
 384
 385             snprintf(p, sizeof(p), "%s/%s", pathname, e->d_name);
 386             add_file(c, p);
 387         }
 388     }
 389
 390     closedir(dir);
 391     return 0;
 392 }