code.delx.au - pulseaudio/blob - src/polypcore/packet.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 Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, 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   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License 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
  29 #include <polypcore/xmalloc.h>
  30
  31 #include "packet.h"
  32
  33 pa_packet* pa_packet_new(size_t length) {
  34     pa_packet *p;
  35     assert(length);
  36     p = pa_xmalloc(sizeof(pa_packet)+length);
  37     p->ref = 1;
  38     p->length = length;
  39     p->data = (uint8_t*) (p+1);
  40     p->type = PA_PACKET_APPENDED;
  41     return p;
  42 }
  43
  44 pa_packet* pa_packet_new_dynamic(uint8_t* data, size_t length) {
  45     pa_packet *p;
  46     assert(data && length);
  47     p = pa_xmalloc(sizeof(pa_packet));
  48     p->ref = 1;
  49     p->length = length;
  50     p->data = data;
  51     p->type = PA_PACKET_DYNAMIC;
  52     return p;
  53 }
  54
  55 pa_packet* pa_packet_ref(pa_packet *p) {
  56     assert(p && p->ref >= 1);
  57     p->ref++;
  58     return p;
  59 }
  60
  61 void pa_packet_unref(pa_packet *p) {
  62     assert(p && p->ref >= 1);
  63     p->ref--;
  64
  65     if (p->ref == 0) {
  66         if (p->type == PA_PACKET_DYNAMIC)
  67             pa_xfree(p->data);
  68         pa_xfree(p);
  69     }
  70 }