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
  10 static void free_entry(struct pa_scache_entry *e) {
  11     assert(e);
  12     free(e->name);
  13     if (e->memchunk.memblock)
  14         pa_memblock_unref(e->memchunk.memblock);
  15     free(e);
  16 }
  17
  18 void pa_scache_add_item(struct pa_core *c, const char *name, struct pa_sample_spec *ss, struct pa_memchunk *chunk, uint32_t *index) {
  19     struct pa_scache_entry *e;
  20     int put;
  21     assert(c && name);
  22
  23     if (c->scache_hashmap && (e = pa_hashmap_get(c->scache_hashmap, name))) {
  24         put = 0;
  25         if (e->memchunk.memblock)
  26             pa_memblock_unref(e->memchunk.memblock);
  27     } else {
  28         put = 1;
  29         e = malloc(sizeof(struct pa_scache_entry));
  30         assert(e);
  31         e->name = strdup(name);
  32         assert(e->name);
  33     }
  34
  35     if (ss)
  36         e->sample_spec = *ss;
  37     else
  38         memset(&e->sample_spec, 0, sizeof(struct pa_sample_spec));
  39
  40     if (chunk) {
  41         e->memchunk = *chunk;
  42         pa_memblock_ref(e->memchunk.memblock);
  43     } else {
  44         e->memchunk.memblock = NULL;
  45         e->memchunk.index = e->memchunk.length = 0;
  46     }
  47
  48     if (put) {
  49         if (!c->scache_hashmap) {
  50             c->scache_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  51             assert(c->scache_hashmap);
  52         }
  53
  54         if (!c->scache_idxset) {
  55             c->scache_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
  56             assert(c->scache_idxset);
  57         }
  58
  59         pa_idxset_put(c->scache_idxset, e, &e->index);
  60         pa_hashmap_put(c->scache_hashmap, e->name, e);
  61     }
  62
  63     if (index)
  64         *index = e->index;
  65 }
  66
  67 int pa_scache_remove_item(struct pa_core *c, const char *name) {
  68     struct pa_scache_entry *e;
  69     assert(c && name);
  70
  71     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
  72         return -1;
  73
  74     pa_hashmap_remove(c->scache_hashmap, name);
  75     if (pa_idxset_remove_by_data(c->scache_idxset, e, NULL) != e)
  76         assert(0);
  77     free_entry(e);
  78     return 0;
  79 }
  80
  81 static void free_cb(void *p, void *userdata) {
  82     struct pa_scache_entry *e = p;
  83     assert(e);
  84     free_entry(e);
  85 }
  86
  87 void pa_scache_free(struct pa_core *c) {
  88     assert(c);
  89
  90     if (c->scache_hashmap) {
  91         pa_hashmap_free(c->scache_hashmap, free_cb, NULL);
  92         c->scache_hashmap = NULL;
  93     }
  94
  95     if (c->scache_idxset) {
  96         pa_idxset_free(c->scache_idxset, NULL, NULL);
  97         c->scache_idxset = NULL;
  98     }
  99 }
 100
 101 static void sink_input_kill(struct pa_sink_input *i) {
 102     struct pa_memchunk *c;
 103     assert(i && i->userdata);
 104     c = i->userdata;
 105
 106     pa_memblock_unref(c->memblock);
 107     free(c);
 108     pa_sink_input_free(i);
 109 }
 110
 111 static int sink_input_peek(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 112     struct pa_memchunk *c;
 113     assert(i && chunk && i->userdata);
 114     c = i->userdata;
 115
 116     assert(c->length && c->memblock && c->memblock->length);
 117     *chunk = *c;
 118     pa_memblock_ref(c->memblock);
 119
 120     return 0;
 121 }
 122
 123 static void si_kill(void *i) {
 124     sink_input_kill(i);
 125 }
 126
 127 static void sink_input_drop(struct pa_sink_input *i, size_t length) {
 128     struct pa_memchunk *c;
 129     assert(i && length && i->userdata);
 130     c = i->userdata;
 131
 132     assert(length <= c->length);
 133
 134     c->length -= length;
 135     c->index += length;
 136
 137     if (c->length <= 0)
 138         pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
 139 }
 140
 141 int pa_scache_play_item(struct pa_core *c, const char *name, struct pa_sink *sink, uint32_t volume) {
 142     struct pa_sink_input *si;
 143     struct pa_scache_entry *e;
 144     struct pa_memchunk *chunk;
 145     assert(c && name && sink);
 146
 147     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 148         return -1;
 149
 150     if (!e->memchunk.memblock)
 151         return -1;
 152
 153     if (!(si = pa_sink_input_new(sink, name, &e->sample_spec)))
 154         return -1;
 155
 156     si->volume = volume;
 157
 158     si->peek = sink_input_peek;
 159     si->drop = sink_input_drop;
 160     si->kill = sink_input_kill;
 161     si->userdata = chunk = malloc(sizeof(struct pa_memchunk));
 162     assert(chunk);
 163     *chunk = e->memchunk;
 164     pa_memblock_ref(chunk->memblock);
 165
 166     return 0;
 167 }
 168
 169 const char * pa_scache_get_name_by_id(struct pa_core *c, uint32_t id) {
 170     struct pa_scache_entry *e;
 171     assert(c && id != PA_IDXSET_INVALID);
 172
 173     if (!c->scache_idxset || !(e = pa_idxset_get_by_index(c->scache_idxset, id)))
 174         return NULL;
 175
 176     return e->name;
 177
 178 }
 179
 180 uint32_t pa_scache_get_id_by_name(struct pa_core *c, const char *name) {
 181     struct pa_scache_entry *e;
 182     assert(c && name);
 183
 184     if (!c->scache_hashmap || !(e = pa_hashmap_get(c->scache_hashmap, name)))
 185         return PA_IDXSET_INVALID;
 186
 187     return e->index;
 188 }