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 #include "namereg.h"
  10
  11 struct pa_source* pa_source_new(struct pa_core *core, const char *name, int fail, const struct pa_sample_spec *spec) {
  12     struct pa_source *s;
  13     char st[256];
  14     int r;
  15     assert(core && spec && name);
  16
  17     s = malloc(sizeof(struct pa_source));
  18     assert(s);
  19
  20     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
  21         free(s);
  22         return NULL;
  23     }
  24
  25     s->name = strdup(name);
  26     s->description = NULL;
  27
  28     s->owner = NULL;
  29     s->core = core;
  30     s->sample_spec = *spec;
  31     s->outputs = pa_idxset_new(NULL, NULL);
  32     s->monitor_of = NULL;
  33
  34     s->notify = NULL;
  35     s->userdata = NULL;
  36
  37     r = pa_idxset_put(core->sources, s, &s->index);
  38     assert(s->index != PA_IDXSET_INVALID && r >= 0);
  39
  40     pa_sample_snprint(st, sizeof(st), spec);
  41     fprintf(stderr, "source: created %u \"%s\" with sample spec \"%s\"\n", s->index, s->name, st);
  42
  43     return s;
  44 }
  45
  46 void pa_source_free(struct pa_source *s) {
  47     struct pa_source_output *o, *j = NULL;
  48     assert(s);
  49
  50     pa_namereg_unregister(s->core, s->name);
  51
  52     while ((o = pa_idxset_first(s->outputs, NULL))) {
  53         assert(o != j);
  54         pa_source_output_kill(o);
  55         j = o;
  56     }
  57     pa_idxset_free(s->outputs, NULL, NULL);
  58
  59     pa_idxset_remove_by_data(s->core->sources, s, NULL);
  60
  61     fprintf(stderr, "source: freed %u \"%s\"\n", s->index, s->name);
  62
  63     free(s->name);
  64     free(s->description);
  65     free(s);
  66 }
  67
  68 void pa_source_notify(struct pa_source*s) {
  69     assert(s);
  70
  71     if (s->notify)
  72         s->notify(s);
  73 }
  74
  75 static int do_post(void *p, uint32_t index, int *del, void*userdata) {
  76     struct pa_memchunk *chunk = userdata;
  77     struct pa_source_output *o = p;
  78     assert(o && o->push && del && chunk);
  79
  80     pa_source_output_push(o, chunk);
  81     return 0;
  82 }
  83
  84 void pa_source_post(struct pa_source*s, struct pa_memchunk *chunk) {
  85     assert(s && chunk);
  86
  87     pa_idxset_foreach(s->outputs, do_post, chunk);
  88 }
  89
  90 struct pa_source* pa_source_get_default(struct pa_core *c) {
  91     struct pa_source *source;
  92     assert(c);
  93
  94     if ((source = pa_idxset_get_by_index(c->sources, c->default_source_index)))
  95         return source;
  96
  97     if (!(source = pa_idxset_first(c->sources, &c->default_source_index)))
  98         return NULL;
  99
 100     fprintf(stderr, "core: default source vanished, setting to %u.\n", source->index);
 101     return source;
 102 }
 103
 104 char *pa_source_list_to_string(struct pa_core *c) {
 105     struct pa_strbuf *s;
 106     struct pa_source *source, *default_source;
 107     uint32_t index = PA_IDXSET_INVALID;
 108     assert(c);
 109
 110     s = pa_strbuf_new();
 111     assert(s);
 112
 113     pa_strbuf_printf(s, "%u source(s) available.\n", pa_idxset_ncontents(c->sources));
 114
 115     default_source = pa_source_get_default(c);
 116
 117     for (source = pa_idxset_first(c->sources, &index); source; source = pa_idxset_next(c->sources, &index)) {
 118         char ss[PA_SAMPLE_SNPRINT_MAX_LENGTH];
 119         pa_sample_snprint(ss, sizeof(ss), &source->sample_spec);
 120         pa_strbuf_printf(s, "  %c index: %u\n\tname: <%s>\n\tsample_spec: <%s>\n", source == default_source ? '*' : ' ', source->index, source->name, ss);
 121
 122         if (source->monitor_of)
 123             pa_strbuf_printf(s, "\tmonitor_of: <%u>\n", source->monitor_of->index);
 124         if (source->owner)
 125             pa_strbuf_printf(s, "\towner module: <%u>\n", source->owner->index);
 126         if (source->description)
 127             pa_strbuf_printf(s, "\tdescription: <%s>\n", source->description);
 128     }
 129
 130     return pa_strbuf_tostring_free(s);
 131 }
 132
 133 void pa_source_set_owner(struct pa_source *s, struct pa_module *m) {
 134     assert(s);
 135     s->owner = m;
 136 }