code.delx.au - pulseaudio/blob - src/source.c

   1 #include <stdio.h>
   2 #include <assert.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "source.h"
   7 #include "sourceoutput.h"
   8 #include "strbuf.h"
   9
  10 struct source* source_new(struct core *core, const char *name, const struct sample_spec *spec) {
  11     struct source *s;
  12     int r;
  13     assert(core && spec);
  14
  15     s = malloc(sizeof(struct source));
  16     assert(s);
  17
  18     s->name = name ? strdup(name) : NULL;
  19     s->core = core;
  20     s->sample_spec = *spec;
  21     s->outputs = idxset_new(NULL, NULL);
  22
  23     s->notify = NULL;
  24     s->userdata = NULL;
  25
  26     r = idxset_put(core->sources, s, &s->index);
  27     assert(s->index != IDXSET_INVALID && r >= 0);
  28
  29     fprintf(stderr, "source: created %u \"%s\"\n", s->index, s->name);
  30
  31     return s;
  32 }
  33
  34 void source_free(struct source *s) {
  35     struct source_output *o, *j = NULL;
  36     assert(s);
  37
  38     while ((o = idxset_first(s->outputs, NULL))) {
  39         assert(o != j);
  40         source_output_kill(o);
  41         j = o;
  42     }
  43     idxset_free(s->outputs, NULL, NULL);
  44
  45     idxset_remove_by_data(s->core->sources, s, NULL);
  46
  47     fprintf(stderr, "source: freed %u \"%s\"\n", s->index, s->name);
  48
  49     free(s->name);
  50     free(s);
  51 }
  52
  53 void source_notify(struct source*s) {
  54     assert(s);
  55
  56     if (s->notify)
  57         s->notify(s);
  58 }
  59
  60 static int do_post(void *p, uint32_t index, int *del, void*userdata) {
  61     struct memchunk *chunk = userdata;
  62     struct source_output *o = p;
  63     assert(o && o->push && del && chunk);
  64
  65     o->push(o, chunk);
  66     return 0;
  67 }
  68
  69 void source_post(struct source*s, struct memchunk *chunk) {
  70     assert(s && chunk);
  71
  72     idxset_foreach(s->outputs, do_post, chunk);
  73 }
  74
  75 struct source* source_get_default(struct core *c) {
  76     struct source *source;
  77     assert(c);
  78
  79     if ((source = idxset_get_by_index(c->sources, c->default_source_index)))
  80         return source;
  81
  82     if (!(source = idxset_first(c->sources, &c->default_source_index)))
  83         return NULL;
  84
  85     fprintf(stderr, "core: default source vanished, setting to %u.\n", source->index);
  86     return source;
  87 }
  88
  89 char *source_list_to_string(struct core *c) {
  90     struct strbuf *s;
  91     struct source *source, *default_source;
  92     uint32_t index = IDXSET_INVALID;
  93     assert(c);
  94
  95     s = strbuf_new();
  96     assert(s);
  97
  98     strbuf_printf(s, "%u source(s) available.\n", idxset_ncontents(c->sources));
  99
 100     default_source = source_get_default(c);
 101
 102     for (source = idxset_first(c->sources, &index); source; source = idxset_next(c->sources, &index))
 103         strbuf_printf(s, "  %c index: %u, name: <%s>\n", source == default_source ? '*' : ' ', source->index, source->name);
 104
 105     return strbuf_tostring_free(s);
 106 }
 107