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

   1 #include <assert.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "sourceoutput.h"
   6 #include "strbuf.h"
   7
   8 struct pa_source_output* pa_source_output_new(struct pa_source *s, const char *name, const struct pa_sample_spec *spec) {
   9     struct pa_source_output *o;
  10     struct pa_resampler *resampler = NULL;
  11     int r;
  12     assert(s && spec);
  13
  14     if (!pa_sample_spec_equal(&s->sample_spec, spec))
  15         if (!(resampler = pa_resampler_new(&s->sample_spec, spec)))
  16             return NULL;
  17
  18     o = malloc(sizeof(struct pa_source_output));
  19     assert(o);
  20     o->name = name ? strdup(name) : NULL;
  21     o->client = NULL;
  22     o->owner = NULL;
  23     o->source = s;
  24     o->sample_spec = *spec;
  25
  26     o->push = NULL;
  27     o->kill = NULL;
  28     o->userdata = NULL;
  29     o->resampler = resampler;
  30
  31     assert(s->core);
  32     r = pa_idxset_put(s->core->source_outputs, o, &o->index);
  33     assert(r == 0 && o->index != PA_IDXSET_INVALID);
  34     r = pa_idxset_put(s->outputs, o, NULL);
  35     assert(r == 0);
  36
  37     return o;
  38 }
  39
  40 void pa_source_output_free(struct pa_source_output* o) {
  41     assert(o);
  42
  43     assert(o->source && o->source->core);
  44     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
  45     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
  46
  47     if (o->resampler)
  48         pa_resampler_free(o->resampler);
  49
  50     free(o->name);
  51     free(o);
  52 }
  53
  54 void pa_source_output_kill(struct pa_source_output*i) {
  55     assert(i);
  56
  57     if (i->kill)
  58         i->kill(i);
  59 }
  60
  61 char *pa_source_output_list_to_string(struct pa_core *c) {
  62     struct pa_strbuf *s;
  63     struct pa_source_output *o;
  64     uint32_t index = PA_IDXSET_INVALID;
  65     assert(c);
  66
  67     s = pa_strbuf_new();
  68     assert(s);
  69
  70     pa_strbuf_printf(s, "%u source outputs(s) available.\n", pa_idxset_ncontents(c->source_outputs));
  71
  72     for (o = pa_idxset_first(c->source_outputs, &index); o; o = pa_idxset_next(c->source_outputs, &index)) {
  73         char ss[PA_SAMPLE_SNPRINT_MAX_LENGTH];
  74         pa_sample_snprint(ss, sizeof(ss), &o->sample_spec);
  75         assert(o->source);
  76         pa_strbuf_printf(
  77             s, "  index: %u\n\tname: <%s>\n\tsource: <%u>\n\tsample_spec: <%s>\n",
  78             o->index,
  79             o->name,
  80             o->source->index,
  81             ss);
  82         if (o->owner)
  83             pa_strbuf_printf(s, "\towner module: <%u>\n", o->owner->index);
  84         if (o->client)
  85             pa_strbuf_printf(s, "\tclient: <%u>\n", o->client->index);
  86     }
  87
  88     return pa_strbuf_tostring_free(s);
  89 }
  90
  91 void pa_source_output_push(struct pa_source_output *o, const struct pa_memchunk *chunk) {
  92     struct pa_memchunk rchunk;
  93     assert(o && chunk && chunk->length && o->push);
  94
  95     if (!o->resampler) {
  96         o->push(o, chunk);
  97         return;
  98     }
  99
 100     pa_resampler_run(o->resampler, chunk, &rchunk);
 101     if (!rchunk.length)
 102         return;
 103
 104     assert(rchunk.memblock);
 105     o->push(o, &rchunk);
 106     pa_memblock_unref(rchunk.memblock);
 107 }