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
   7 struct pa_source_output* pa_source_output_new(struct pa_source *s, const char *name, const struct pa_sample_spec *spec) {
   8     struct pa_source_output *o;
   9     struct pa_resampler *resampler = NULL;
  10     int r;
  11     assert(s && spec);
  12
  13     if (!pa_sample_spec_equal(&s->sample_spec, spec))
  14         if (!(resampler = pa_resampler_new(&s->sample_spec, spec)))
  15             return NULL;
  16
  17     o = malloc(sizeof(struct pa_source_output));
  18     assert(o);
  19     o->name = name ? strdup(name) : NULL;
  20     o->client = NULL;
  21     o->owner = NULL;
  22     o->source = s;
  23     o->sample_spec = *spec;
  24
  25     o->push = NULL;
  26     o->kill = NULL;
  27     o->userdata = NULL;
  28     o->resampler = resampler;
  29
  30     assert(s->core);
  31     r = pa_idxset_put(s->core->source_outputs, o, &o->index);
  32     assert(r == 0 && o->index != PA_IDXSET_INVALID);
  33     r = pa_idxset_put(s->outputs, o, NULL);
  34     assert(r == 0);
  35
  36     return o;
  37 }
  38
  39 void pa_source_output_free(struct pa_source_output* o) {
  40     assert(o);
  41
  42     assert(o->source && o->source->core);
  43     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
  44     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
  45
  46     if (o->resampler)
  47         pa_resampler_free(o->resampler);
  48
  49     free(o->name);
  50     free(o);
  51 }
  52
  53 void pa_source_output_kill(struct pa_source_output*i) {
  54     assert(i);
  55
  56     if (i->kill)
  57         i->kill(i);
  58 }
  59
  60 void pa_source_output_push(struct pa_source_output *o, const struct pa_memchunk *chunk) {
  61     struct pa_memchunk rchunk;
  62     assert(o && chunk && chunk->length && o->push);
  63
  64     if (!o->resampler) {
  65         o->push(o, chunk);
  66         return;
  67     }
  68
  69     pa_resampler_run(o->resampler, chunk, &rchunk);
  70     if (!rchunk.length)
  71         return;
  72
  73     assert(rchunk.memblock);
  74     o->push(o, &rchunk);
  75     pa_memblock_unref(rchunk.memblock);
  76 }