code.delx.au - pulseaudio/blob - polyp/scache.c

   1 #include <assert.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5
   6 #include "scache.h"
   7 #include "sink-input.h"
   8 #include "mainloop.h"
   9 #include "sample-util.h"
  10 #include "play-memchunk.h"
  11 #include "xmalloc.h"
  12
  13 static void free_entry(struct pa_scache_entry *e) {
  14     assert(e);
  15     pa_xfree(e->name);
  16     if (e->memchunk.memblock)
  17         pa_memblock_unref(e->memchunk.memblock);
  18     pa_xfree(e);
  19 }
  20
  21 void pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
  22     struct pa_scache_entry *e;
  23     int put;
  24     assert(c && name);
  25
  26     if (c->scache_hashmap && (e = pa_hashmap_get(c->scache_hashmap, name))) {
  27         put = 0;
  28         if (e->memchunk.memblock)
  29             pa_memblock_unref(e->memchunk.memblock);
  30     } else {
  31         put = 1;
  32         e = pa_xmalloc(sizeof(struct pa_scache_entry));
  33         e->name = pa_xstrdup(name);
  34     }
  35
  36     e->volume = 0x100;
  37
  38     if (ss)
  39         e->sample_spec = *ss;
  40     else
  41         memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
  42
  43     if (chunk) {
  44         e->memchunk = *chunk;
  45         pa_memblock_ref(e->memchunk.memblock);
  46     } else {
  47         e->memchunk.memblock = NULL;
  48         e->memchunk.index = e->memchunk.length = 0;
  49     }
  50
  51     if (put) {
  52         if (!c->scache_hashmap) {
  53             c->scache_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  54             assert(c->scache_hashmap);
  55         }
  56
  57         if (!c->scache_idxset) {
  58             c->scache_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  59             assert(c->scache_idxset);
  60         }
  61
  62         pa_idxset_put(c->scache_idxset, e, &e->index);
  63         pa_hashmap_put(c->scache_hashmap, e->name, e);
  64     }
  65
  66     if (index)
  67         *index = e->index;
  68 }
  69
  70 int pa_scache_remove_item(struct pa_core *c, const char *name) {
  71     struct pa_scache_entry *e;
  72     assert(c && name);
  73
  74     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
  75         return -1;
  76
  77     pa_hashmap_remove(c->scache_hashmap, name);
  78     if (pa_idxset_remove_by_data(c->scache_idxset, e, NULL) != e)
  79         assert(0);
  80     free_entry(e);
  81     return 0;
  82 }
  83
  84 static void free_cb(void *p, void *userdata) {
  85     struct pa_scache_entry *e = p;
  86     assert(e);
  87     free_entry(e);
  88 }
  89
  90 void pa_scache_free(struct pa_core *c) {
  91     assert(c);
  92
  93     if (c->scache_hashmap) {
  94         pa_hashmap_free(c->scache_hashmap, free_cb, NULL);
  95         c->scache_hashmap = NULL;
  96     }
  97
  98     if (c->scache_idxset) {
  99         pa_idxset_free(c->scache_idxset, NULL, NULL);
 100         c->scache_idxset = NULL;
 101     }
 102 }
 103
 104 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 105     struct pa_scache_entry *e;
 106     assert(c && name && sink);
 107
 108     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 109         return -1;
 110
 111     if (!e->memchunk.memblock)
 112         return -1;
 113
 114     if (pa_play_memchunk(sink, name, &e->sample_spec, &e->memchunk, pa_volume_multiply(volume, e->volume)) < 0)
 115         return -1;
 116
 117     return 0;
 118 }
 119
 120 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 121     struct pa_scache_entry *e;
 122     assert(c && id != PA_IDXSET_INVALID);
 123
 124     if (!c->scache_idxset || !(e = pa_idxset_get_by_index(c->scache_idxset, id)))
 125         return NULL;
 126
 127     return e->name;
 128
 129 }
 130
 131 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 132     struct pa_scache_entry *e;
 133     assert(c && name);
 134
 135     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 136         return PA_IDXSET_INVALID;
 137
 138     return e->index;
 139 }