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 <polyp/mainloop.h>
  45 #include <polyp/channelmap.h>
  46 #include <polyp/volume.h>
  47 #include <polypcore/sink-input.h>
  48 #include <polypcore/sample-util.h>
  49 #include <polypcore/play-memchunk.h>
  50 #include <polypcore/xmalloc.h>
  51 #include <polypcore/core-subscribe.h>
  52 #include <polypcore/namereg.h>
  53 #include <polypcore/sound-file.h>
  54 #include <polypcore/util.h>
  55 #include <polypcore/log.h>
  56
  57 #include "core-scache.h"
  58
  59 #define UNLOAD_POLL_TIME 2
  60
  61 static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
  62     pa_core *c = userdata;
  63     struct timeval ntv;
  64     assert(c && c->mainloop == m && c->scache_auto_unload_event == e);
  65
  66     pa_scache_unload_unused(c);
  67
  68     pa_gettimeofday(&ntv);
  69     ntv.tv_sec += UNLOAD_POLL_TIME;
  70     m->time_restart(e, &ntv);
  71 }
  72
  73 static void free_entry(pa_scache_entry *e) {
  74     assert(e);
  75     pa_namereg_unregister(e->core, e->name);
  76     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  77     pa_xfree(e->name);
  78     pa_xfree(e->filename);
  79     if (e->memchunk.memblock)
  80         pa_memblock_unref(e->memchunk.memblock);
  81     pa_xfree(e);
  82 }
  83
  84 static pa_scache_entry* scache_add_item(pa_core *c, const char *name) {
  85     pa_scache_entry *e;
  86     assert(c && name);
  87
  88     if ((e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0))) {
  89         if (e->memchunk.memblock)
  90             pa_memblock_unref(e->memchunk.memblock);
  91
  92         pa_xfree(e->filename);
  93
  94         assert(e->core == c);
  95
  96         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
  97     } else {
  98         e = pa_xmalloc(sizeof(pa_scache_entry));
  99
 100         if (!pa_namereg_register(c, name, PA_NAMEREG_SAMPLE, e, 1)) {
 101             pa_xfree(e);
 102             return NULL;
 103         }
 104
 105         e->name = pa_xstrdup(name);
 106         e->core = c;
 107
 108         if (!c->scache) {
 109             c->scache = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 110             assert(c->scache);
 111         }
 112
 113         pa_idxset_put(c->scache, e, &e->index);
 114
 115         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
 116     }
 117
 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     pa_cvolume_reset(&e->volume, PA_CHANNELS_MAX);
 127
 128     return e;
 129 }
 130
 131 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) {
 132     pa_scache_entry *e;
 133     assert(c && name);
 134
 135     if (!(e = scache_add_item(c, name)))
 136         return -1;
 137
 138     if (ss) {
 139         e->sample_spec = *ss;
 140         pa_channel_map_init_auto(&e->channel_map, ss->channels);
 141         e->volume.channels = e->sample_spec.channels;
 142     }
 143
 144     if (map)
 145         e->channel_map = *map;
 146
 147     if (chunk) {
 148         e->memchunk = *chunk;
 149         pa_memblock_ref(e->memchunk.memblock);
 150     }
 151
 152     if (idx)
 153         *idx = e->index;
 154
 155     return 0;
 156 }
 157
 158 int pa_scache_add_file(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 159     pa_sample_spec ss;
 160     pa_memchunk chunk;
 161     int r;
 162
 163 #ifdef OS_IS_WIN32
 164     char buf[MAX_PATH];
 165
 166     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 167         filename = buf;
 168 #endif
 169
 170     if (pa_sound_file_load(filename, &ss, &chunk, c->memblock_stat) < 0)
 171         return -1;
 172
 173     r = pa_scache_add_item(c, name, &ss, NULL, &chunk, idx);
 174     pa_memblock_unref(chunk.memblock);
 175
 176     return r;
 177 }
 178
 179 int pa_scache_add_file_lazy(pa_core *c, const char *name, const char *filename, uint32_t *idx) {
 180     pa_scache_entry *e;
 181
 182 #ifdef OS_IS_WIN32
 183     char buf[MAX_PATH];
 184
 185     if (ExpandEnvironmentStrings(filename, buf, MAX_PATH))
 186         filename = buf;
 187 #endif
 188
 189     assert(c && name);
 190
 191     if (!(e = scache_add_item(c, name)))
 192         return -1;
 193
 194     e->lazy = 1;
 195     e->filename = pa_xstrdup(filename);
 196
 197     if (!c->scache_auto_unload_event) {
 198         struct timeval ntv;
 199         pa_gettimeofday(&ntv);
 200         ntv.tv_sec += UNLOAD_POLL_TIME;
 201         c->scache_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
 202     }
 203
 204     if (idx)
 205         *idx = e->index;
 206
 207     return 0;
 208 }
 209
 210 int pa_scache_remove_item(pa_core *c, const char *name) {
 211     pa_scache_entry *e;
 212     assert(c && name);
 213
 214     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 215         return -1;
 216
 217     if (pa_idxset_remove_by_data(c->scache, e, NULL) != e)
 218         assert(0);
 219
 220     free_entry(e);
 221     return 0;
 222 }
 223
 224 static void free_cb(void *p, PA_GCC_UNUSED void *userdata) {
 225     pa_scache_entry *e = p;
 226     assert(e);
 227     free_entry(e);
 228 }
 229
 230 void pa_scache_free(pa_core *c) {
 231     assert(c);
 232
 233     if (c->scache) {
 234         pa_idxset_free(c->scache, free_cb, NULL);
 235         c->scache = NULL;
 236     }
 237
 238     if (c->scache_auto_unload_event)
 239         c->mainloop->time_free(c->scache_auto_unload_event);
 240 }
 241
 242 int pa_scache_play_item(pa_core *c, const char *name, pa_sink *sink, const pa_cvolume *volume) {
 243     pa_scache_entry *e;
 244     char *t;
 245     pa_cvolume r;
 246
 247     assert(c);
 248     assert(name);
 249     assert(sink);
 250
 251     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 1)))
 252         return -1;
 253
 254     if (e->lazy && !e->memchunk.memblock) {
 255         if (pa_sound_file_load(e->filename, &e->sample_spec, &e->memchunk, c->memblock_stat) < 0)
 256             return -1;
 257
 258         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 259         e->volume.channels = e->sample_spec.channels;
 260     }
 261
 262     if (!e->memchunk.memblock)
 263         return -1;
 264
 265     t = pa_sprintf_malloc("sample:%s", name);
 266
 267     if (volume) {
 268         r = *volume;
 269         r.channels = e->volume.channels;
 270         pa_sw_cvolume_multiply(&r, &r, &e->volume);
 271     } else
 272         r = e->volume;
 273
 274     if (pa_play_memchunk(sink, t, &e->sample_spec, &e->channel_map, &e->memchunk, &r) < 0) {
 275         pa_xfree(t);
 276         return -1;
 277     }
 278
 279     pa_xfree(t);
 280
 281     if (e->lazy)
 282         time(&e->last_used_time);
 283
 284     return 0;
 285 }
 286
 287 const char * pa_scache_get_name_by_id(pa_core *c, uint32_t id) {
 288     pa_scache_entry *e;
 289     assert(c && id != PA_IDXSET_INVALID);
 290
 291     if (!c->scache || !(e = pa_idxset_get_by_index(c->scache, id)))
 292         return NULL;
 293
 294     return e->name;
 295 }
 296
 297 uint32_t pa_scache_get_id_by_name(pa_core *c, const char *name) {
 298     pa_scache_entry *e;
 299     assert(c && name);
 300
 301     if (!(e = pa_namereg_get(c, name, PA_NAMEREG_SAMPLE, 0)))
 302         return PA_IDXSET_INVALID;
 303
 304     return e->index;
 305 }
 306
 307 uint32_t pa_scache_total_size(pa_core *c) {
 308     pa_scache_entry *e;
 309     uint32_t idx, sum = 0;
 310     assert(c);
 311
 312     if (!c->scache || !pa_idxset_size(c->scache))
 313         return 0;
 314
 315     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx))
 316         if (e->memchunk.memblock)
 317             sum += e->memchunk.length;
 318
 319     return sum;
 320 }
 321
 322 void pa_scache_unload_unused(pa_core *c) {
 323     pa_scache_entry *e;
 324     time_t now;
 325     uint32_t idx;
 326     assert(c);
 327
 328     if (!c->scache || !pa_idxset_size(c->scache))
 329         return;
 330
 331     time(&now);
 332
 333     for (e = pa_idxset_first(c->scache, &idx); e; e = pa_idxset_next(c->scache, &idx)) {
 334
 335         if (!e->lazy || !e->memchunk.memblock)
 336             continue;
 337
 338         if (e->last_used_time + c->scache_idle_time > now)
 339             continue;
 340
 341         pa_memblock_unref(e->memchunk.memblock);
 342         e->memchunk.memblock = NULL;
 343         e->memchunk.index = e->memchunk.length = 0;
 344
 345         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_CHANGE, e->index);
 346     }
 347 }
 348
 349 static void add_file(pa_core *c, const char *pathname) {
 350     struct stat st;
 351     const char *e;
 352
 353     e = pa_path_get_filename(pathname);
 354
 355     if (stat(pathname, &st) < 0) {
 356         pa_log(__FILE__": stat('%s') failed: %s", pathname, strerror(errno));
 357         return;
 358     }
 359
 360 #if defined(S_ISREG) && defined(S_ISLNK)
 361     if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 362 #endif
 363         pa_scache_add_file_lazy(c, e, pathname, NULL);
 364 }
 365
 366 int pa_scache_add_directory_lazy(pa_core *c, const char *pathname) {
 367     DIR *dir;
 368     assert(c && pathname);
 369
 370     /* First try to open this as directory */
 371     if (!(dir = opendir(pathname))) {
 372 #ifdef HAVE_GLOB_H
 373         glob_t p;
 374         unsigned int i;
 375         /* If that fails, try to open it as shell glob */
 376
 377         if (glob(pathname, GLOB_ERR|GLOB_NOSORT, NULL, &p) < 0) {
 378             pa_log(__FILE__": Failed to open directory: %s", strerror(errno));
 379             return -1;
 380         }
 381
 382         for (i = 0; i < p.gl_pathc; i++)
 383             add_file(c, p.gl_pathv[i]);
 384
 385         globfree(&p);
 386 #else
 387         return -1;
 388 #endif
 389     } else {
 390         struct dirent *e;
 391
 392         while ((e = readdir(dir))) {
 393             char p[PATH_MAX];
 394
 395             if (e->d_name[0] == '.')
 396                 continue;
 397
 398             snprintf(p, sizeof(p), "%s/%s", pathname, e->d_name);
 399             add_file(c, p);
 400         }
 401     }
 402
 403     closedir(dir);
 404     return 0;
 405 }