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 #include "subscribe.h"
  13
  14 static void free_entry(struct pa_scache_entry *e) {
  15     assert(e);
  16     pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_REMOVE, e->index);
  17     pa_xfree(e->name);
  18     if (e->memchunk.memblock)
  19         pa_memblock_unref(e->memchunk.memblock);
  20     pa_xfree(e);
  21 }
  22
  23 void pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
  24     struct pa_scache_entry *e;
  25     int put;
  26     assert(c && name);
  27
  28     if (c->scache_hashmap && (e = pa_hashmap_get(c->scache_hashmap, name))) {
  29         put = 0;
  30         if (e->memchunk.memblock)
  31             pa_memblock_unref(e->memchunk.memblock);
  32         assert(e->core == c);
  33     } else {
  34         put = 1;
  35         e = pa_xmalloc(sizeof(struct pa_scache_entry));
  36         e->name = pa_xstrdup(name);
  37         e->core = c;
  38     }
  39
  40     e->volume = 0x100;
  41
  42     if (ss)
  43         e->sample_spec = *ss;
  44     else
  45         memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
  46
  47     if (chunk) {
  48         e->memchunk = *chunk;
  49         pa_memblock_ref(e->memchunk.memblock);
  50     } else {
  51         e->memchunk.memblock = NULL;
  52         e->memchunk.index = e->memchunk.length = 0;
  53     }
  54
  55     if (put) {
  56         if (!c->scache_hashmap) {
  57             c->scache_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  58             assert(c->scache_hashmap);
  59         }
  60
  61         if (!c->scache_idxset) {
  62             c->scache_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  63             assert(c->scache_idxset);
  64         }
  65
  66         pa_idxset_put(c->scache_idxset, e, &e->index);
  67         pa_hashmap_put(c->scache_hashmap, e->name, e);
  68
  69         pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE|PA_SUBSCRIPTION_EVENT_NEW, e->index);
  70     }
  71
  72     if (index)
  73         *index = e->index;
  74 }
  75
  76 int pa_scache_remove_item(struct pa_core *c, const char *name) {
  77     struct pa_scache_entry *e;
  78     assert(c && name);
  79
  80     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
  81         return -1;
  82
  83     pa_hashmap_remove(c->scache_hashmap, name);
  84     if (pa_idxset_remove_by_data(c->scache_idxset, e, NULL) != e)
  85         assert(0);
  86
  87     free_entry(e);
  88     return 0;
  89 }
  90
  91 static void free_cb(void *p, void *userdata) {
  92     struct pa_scache_entry *e = p;
  93     assert(e);
  94     free_entry(e);
  95 }
  96
  97 void pa_scache_free(struct pa_core *c) {
  98     assert(c);
  99
 100     if (c->scache_hashmap) {
 101         pa_hashmap_free(c->scache_hashmap, free_cb, NULL);
 102         c->scache_hashmap = NULL;
 103     }
 104
 105     if (c->scache_idxset) {
 106         pa_idxset_free(c->scache_idxset, NULL, NULL);
 107         c->scache_idxset = NULL;
 108     }
 109 }
 110
 111 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 112     struct pa_scache_entry *e;
 113     assert(c && name && sink);
 114
 115     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 116         return -1;
 117
 118     if (!e->memchunk.memblock)
 119         return -1;
 120
 121     if (pa_play_memchunk(sink, name, &e->sample_spec, &e->memchunk, pa_volume_multiply(volume, e->volume)) < 0)
 122         return -1;
 123
 124     return 0;
 125 }
 126
 127 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 128     struct pa_scache_entry *e;
 129     assert(c && id != PA_IDXSET_INVALID);
 130
 131     if (!c->scache_idxset || !(e = pa_idxset_get_by_index(c->scache_idxset, id)))
 132         return NULL;
 133
 134     return e->name;
 135
 136 }
 137
 138 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 139     struct pa_scache_entry *e;
 140     assert(c && name);
 141
 142     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 143         return PA_IDXSET_INVALID;
 144
 145     return e->index;
 146 }