code.delx.au - pulseaudio/blob - src/pulsecore/core-scache.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <stdio.h>
  32 #include <sys/types.h>
  33 #include <dirent.h>
  34 #include <sys/stat.h>
  35 #include <errno.h>
  36 #include <limits.h>
  37
  38 #ifdef HAVE_GLOB_H
  39 #include <glob.h>
  40 #endif
  41
  42 #ifdef HAVE_WINDOWS_H
  43 #include <windows.h>
  44 #endif
  45
  46 #include <pulse/mainloop.h>
  47 #include <pulse/channelmap.h>
  48 #include <pulse/timeval.h>
  49 #include <pulse/util.h>
  50 #include <pulse/volume.h>
  51 #include <pulse/xmalloc.h>
  52
  53 #include <pulsecore/sink-input.h>
  54 #include <pulsecore/sample-util.h>
  55 #include <pulsecore/play-memchunk.h>
  56 #include <pulsecore/core-subscribe.h>
  57 #include <pulsecore/namereg.h>
  58 #include <pulsecore/sound-file.h>
  59 #include <pulsecore/core-util.h>
  60 #include <pulsecore/log.h>
  61 #include <pulsecore/core-error.h>
  62 #include <pulsecore/macro.h>
  63
  64 #include "core-scache.h"
  65
  66 #define UNLOAD_POLL_TIME 2
  67
  68 static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
  69     pa_core *c = userdata;
  70     struct timeval ntv;
  71
  72     pa_assert(c);
  73     pa_assert(c->mainloop == m);
  74     pa_assert(c->scache_auto_unload_event == e);
  75
  76     pa_scache_unload_unused(c);
  77
  78     pa_gettimeofday(&ntv);
  79     ntv.tv_sec += UNLOAD_POLL_TIME;
  80     m->time_restart(e, &ntv);
  81 }
  82
  83 static void free_entry(pa_scache_entry *e) {
  84     pa_assert(e);
  85
  86     pa_namereg_unregister(e->core, e->name);
  87     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  88     pa_xfree(e->name);
  89     pa_xfree(e->filename);
  90     if (e->memchunk.memblock)
  91         pa_memblock_unref(e->memchunk.memblock);
  92     pa_xfree(e);
  93 }
  94
  95 static pa_scache_entry* scache_add_item(pa_core *c, const char *name) {
  96     pa_scache_entry *e;
  97
  98     pa_assert(c);
  99     pa_assert(name);
 100
 101     if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
 102         if (e->memchunk.memblock)
 103             pa_memblock_unref(e->memchunk.memblock);
 104
 105         pa_xfree(e->filename);
 106
 107         pa_assert(e->core == c);
 108
 109         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 110     } else {
 111         e = pa_xnew(pa_scache_entry, 1);
 112
 113         if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
 114             pa_xfree(e);
 115             return NULL;
 116         }
 117
 118         e->name = pa_xstrdup(name);
 119         e->core = c;
 120
 121         if (!c->scache) {
 122             c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 123             pa_assert(c->scache);
 124         }
 125
 126         pa_idxset_put(c->scache, e, &e->index);
 127
 128         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
 129     }
 130
 131     e->last_used_time = 0;
 132     e->memchunk.memblock = NULL;
 133     e->memchunk.index = e->memchunk.length = 0;
 134     e->filename = NULL;
 135     e->lazy = 0;
 136     e->last_used_time = 0;
 137
 138     memset(&e->sample_spec, 0, sizeof(e->sample_spec));
 139     pa_channel_map_init(&e->channel_map);
 140     pa_cvolume_reset(&e->volume, PA_CHANNELS_MAX);
 141
 142     return e;
 143 }
 144
 145 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) {
 146     pa_scache_entry *e;
 147     char st[PA_SAMPLE_SPEC_SNPRINT_MAX];
 148
 149     pa_assert(c);
 150     pa_assert(name);
 151
 152     if (chunk && chunk->length > PA_SCACHE_ENTRY_SIZE_MAX)
 153         return -1;
 154
 155     if (!(e = scache_add_item(c, name)))
 156         return -1;
 157
 158     if (ss) {
 159         e->sample_spec = *ss;
 160         pa_channel_map_init_auto(&e->channel_map, ss->channels, PA_CHANNEL_MAP_DEFAULT);
 161         e->volume.channels = e->sample_spec.channels;
 162     }
 163
 164     if (map)
 165         e->channel_map = *map;
 166
 167     if (chunk) {
 168         e->memchunk = *chunk;
 169         pa_memblock_ref(e->memchunk.memblock);
 170     }
 171
 172     if (idx)
 173         *idx = e->index;
 174
 175     pa_log_debug("Created sample \"%s\" (#%d), %lu bytes with sample spec %s",
 176                  name, e->index, (unsigned long) e->memchunk.length,
 177                  pa_sample_spec_snprint(st, sizeof(st), &e->sample_spec));
 178
 179     return 0;
 180 }
 181
 182 int pa_scache_add_file(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 183     pa_sample_spec ss;
 184     pa_channel_map map;
 185     pa_memchunk chunk;
 186     int r;
 187
 188 #ifdef OS_IS_WIN32
 189     char buf[MAX_PATH];
 190
 191     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 192         filename = buf;
 193 #endif
 194
 195     pa_assert(c);
 196     pa_assert(name);
 197     pa_assert(filename);
 198
 199     if (pa_sound_file_load(c->mempool, filename, &ss, &map, &chunk) < 0)
 200         return -1;
 201
 202     r = pa_scache_add_item(c, name, &ss, &map, &chunk, idx);
 203     pa_memblock_unref(chunk.memblock);
 204
 205     return r;
 206 }
 207
 208 int pa_scache_add_file_lazy(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 209     pa_scache_entry *e;
 210
 211 #ifdef OS_IS_WIN32
 212     char buf[MAX_PATH];
 213
 214     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 215         filename = buf;
 216 #endif
 217
 218     pa_assert(c);
 219     pa_assert(name);
 220     pa_assert(filename);
 221
 222     if (!(e = scache_add_item(c, name)))
 223         return -1;
 224
 225     e->lazy = 1;
 226     e->filename = pa_xstrdup(filename);
 227
 228     if (!c->scache_auto_unload_event) {
 229         struct timeval ntv;
 230         pa_gettimeofday(&ntv);
 231         ntv.tv_sec += UNLOAD_POLL_TIME;
 232         c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
 233     }
 234
 235     if (idx)
 236         *idx = e->index;
 237
 238     return 0;
 239 }
 240
 241 int pa_scache_remove_item(pa_core *c, const char *name) {
 242     pa_scache_entry *e;
 243
 244     pa_assert(c);
 245     pa_assert(name);
 246
 247     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 248         return -1;
 249
 250     if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
 251         pa_assert(0);
 252
 253     pa_log_debug("Removed sample \"%s\"", name);
 254
 255     free_entry(e);
 256
 257     return 0;
 258 }
 259
 260 static void free_cb(void *p, PA_GCC_UNUSED void *userdata) {
 261     pa_scache_entry *e = p;
 262     pa_assert(e);
 263
 264     free_entry(e);
 265 }
 266
 267 void pa_scache_free(pa_core *c) {
 268     pa_assert(c);
 269
 270     if (c->scache) {
 271         pa_idxset_free(c->scache, free_cb, NULL);
 272         c->scache = NULL;
 273     }
 274
 275     if (c->scache_auto_unload_event)
 276         c->mainloop->time_free(c->scache_auto_unload_event);
 277 }
 278
 279 int pa_scache_play_item(pa_core *c, const char *name, pa_sink *sink, pa_volume_t volume) {
 280     pa_scache_entry *e;
 281     char *t;
 282     pa_cvolume r;
 283
 284     pa_assert(c);
 285     pa_assert(name);
 286     pa_assert(sink);
 287
 288     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
 289         return -1;
 290
 291     if (e->lazy && !e->memchunk.memblock) {
 292         if (pa_sound_file_load(c->mempool, e->filename, &e->sample_spec, &e->channel_map, &e->memchunk) < 0)
 293             return -1;
 294
 295         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 296
 297         if (e->volume.channels > e->sample_spec.channels)
 298             e->volume.channels = e->sample_spec.channels;
 299     }
 300
 301     if (!e->memchunk.memblock)
 302         return -1;
 303
 304     pa_log_debug("Playing sample \"%s\" on \"%s\"", name, sink->name);
 305
 306     t = pa_sprintf_malloc("sample:%s", name);
 307
 308     pa_cvolume_set(&r, e->volume.channels, volume);
 309     pa_sw_cvolume_multiply(&r, &r, &e->volume);
 310
 311     if (pa_play_memchunk(sink, t, &e->sample_spec, &e->channel_map, &e->memchunk, &r) < 0) {
 312         pa_xfree(t);
 313         return -1;
 314     }
 315
 316     pa_xfree(t);
 317
 318     if (e->lazy)
 319         time(&e->last_used_time);
 320
 321     return 0;
 322 }
 323
 324 int pa_scache_play_item_by_name(pa_core *c, const char *name, const char*sink_name, pa_volume_t volume, int autoload) {
 325     pa_sink *sink;
 326
 327     pa_assert(c);
 328     pa_assert(name);
 329
 330     if (!(sink = pa_namereg_get(c, sink_name, PA_NAMEREG_SINK, autoload)))
 331         return -1;
 332
 333     return pa_scache_play_item(c, name, sink, volume);
 334 }
 335
 336 const char * pa_scache_get_name_by_id(pa_core *c, uint32_t id) {
 337     pa_scache_entry *e;
 338
 339     pa_assert(c);
 340     pa_assert(id != PA_IDXSET_INVALID);
 341
 342     if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
 343         return NULL;
 344
 345     return e->name;
 346 }
 347
 348 uint32_t pa_scache_get_id_by_name(pa_core *c, const char *name) {
 349     pa_scache_entry *e;
 350
 351     pa_assert(c);
 352     pa_assert(name);
 353
 354     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 355         return PA_IDXSET_INVALID;
 356
 357     return e->index;
 358 }
 359
 360 uint32_t pa_scache_total_size(pa_core *c) {
 361     pa_scache_entry *e;
 362     uint32_t idx, sum = 0;
 363
 364     pa_assert(c);
 365
 366     if (!c->scache || !pa_idxset_size(c->scache))
 367         return 0;
 368
 369     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx))
 370         if (e->memchunk.memblock)
 371             sum += e->memchunk.length;
 372
 373     return sum;
 374 }
 375
 376 void pa_scache_unload_unused(pa_core *c) {
 377     pa_scache_entry *e;
 378     time_t now;
 379     uint32_t idx;
 380
 381     pa_assert(c);
 382
 383     if (!c->scache || !pa_idxset_size(c->scache))
 384         return;
 385
 386     time(&now);
 387
 388     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx)) {
 389
 390         if (!e->lazy || !e->memchunk.memblock)
 391             continue;
 392
 393         if (e->last_used_time + c->scache_idle_time > now)
 394             continue;
 395
 396         pa_memblock_unref(e->memchunk.memblock);
 397         e->memchunk.memblock = NULL;
 398         e->memchunk.index = e->memchunk.length = 0;
 399
 400         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 401     }
 402 }
 403
 404 static void add_file(pa_core *c, const char *pathname) {
 405     struct stat st;
 406     const char *e;
 407
 408     pa_core_assert_ref(c);
 409     pa_assert(pathname);
 410
 411     e = pa_path_get_filename(pathname);
 412
 413     if (stat(pathname, &st) < 0) {
 414         pa_log("stat('%s'): %s", pathname, pa_cstrerror(errno));
 415         return;
 416     }
 417
 418 #if defined(S_ISREG) && defined(S_ISLNK)
 419     if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 420 #endif
 421         pa_scache_add_file_lazy(c, e, pathname, NULL);
 422 }
 423
 424 int pa_scache_add_directory_lazy(pa_core *c, const char *pathname) {
 425     DIR *dir;
 426
 427     pa_core_assert_ref(c);
 428     pa_assert(pathname);
 429
 430     /* First try to open this as directory */
 431     if (!(dir = opendir(pathname))) {
 432 #ifdef HAVE_GLOB_H
 433         glob_t p;
 434         unsigned int i;
 435         /* If that fails, try to open it as shell glob */
 436
 437         if (glob(pathname, GLOB_ERR|GLOB_NOSORT, NULL, &p) < 0) {
 438             pa_log("failed to open directory '%s': %s", pathname, pa_cstrerror(errno));
 439             return -1;
 440         }
 441
 442         for (i = 0; i < p.gl_pathc; i++)
 443             add_file(c, p.gl_pathv[i]);
 444
 445         globfree(&p);
 446 #else
 447         return -1;
 448 #endif
 449     } else {
 450         struct dirent *e;
 451
 452         while ((e = readdir(dir))) {
 453             char p[PATH_MAX];
 454
 455             if (e->d_name[0] == '.')
 456                 continue;
 457
 458             pa_snprintf(p, sizeof(p), "%s/%s", pathname, e->d_name);
 459             add_file(c, p);
 460         }
 461     }
 462
 463     closedir(dir);
 464     return 0;
 465 }