code.delx.au - pulseaudio/blob - polyp/source-output.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <assert.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include "source-output.h"
  31 #include "xmalloc.h"
  32 #include "subscribe.h"
  33
  34 struct pa_source_output* pa_source_output_new(struct pa_source *s, const char *name, const struct pa_sample_spec *spec) {
  35     struct pa_source_output *o;
  36     struct pa_resampler *resampler = NULL;
  37     int r;
  38     assert(s && spec);
  39
  40     if (!pa_sample_spec_equal(&s->sample_spec, spec))
  41         if (!(resampler = pa_resampler_new(&s->sample_spec, spec, s->core->memblock_stat)))
  42             return NULL;
  43
  44     o = pa_xmalloc(sizeof(struct pa_source_output));
  45     o->name = pa_xstrdup(name);
  46     o->client = NULL;
  47     o->owner = NULL;
  48     o->source = s;
  49     o->sample_spec = *spec;
  50
  51     o->push = NULL;
  52     o->kill = NULL;
  53     o->userdata = NULL;
  54     o->resampler = resampler;
  55
  56     assert(s->core);
  57     r = pa_idxset_put(s->core->source_outputs, o, &o->index);
  58     assert(r == 0 && o->index != PA_IDXSET_INVALID);
  59     r = pa_idxset_put(s->outputs, o, NULL);
  60     assert(r == 0);
  61
  62     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
  63
  64     return o;
  65 }
  66
  67 void pa_source_output_free(struct pa_source_output* o) {
  68     assert(o);
  69
  70     assert(o->source && o->source->core);
  71     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
  72     pa_idxset_remove_by_data(o->source->outputs, o, NULL);
  73
  74     if (o->resampler)
  75         pa_resampler_free(o->resampler);
  76
  77     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
  78
  79     pa_xfree(o->name);
  80     pa_xfree(o);
  81 }
  82
  83 void pa_source_output_kill(struct pa_source_output*i) {
  84     assert(i);
  85
  86     if (i->kill)
  87         i->kill(i);
  88 }
  89
  90 void pa_source_output_push(struct pa_source_output *o, const struct pa_memchunk *chunk) {
  91     struct pa_memchunk rchunk;
  92     assert(o && chunk && chunk->length && o->push);
  93
  94     if (!o->resampler) {
  95         o->push(o, chunk);
  96         return;
  97     }
  98
  99     pa_resampler_run(o->resampler, chunk, &rchunk);
 100     if (!rchunk.length)
 101         return;
 102
 103     assert(rchunk.memblock);
 104     o->push(o, &rchunk);
 105     pa_memblock_unref(rchunk.memblock);
 106 }