code.delx.au - pulseaudio/blob - polyp/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 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
  29 #include "packet.h"
  30 #include "xmalloc.h"
  31
  32 struct pa_packet* pa_packet_new(size_t length) {
  33     struct pa_packet *p;
  34     assert(length);
  35     p = pa_xmalloc(sizeof(struct pa_packet)+length);
  36     p->ref = 1;
  37     p->length = length;
  38     p->data = (uint8_t*) (p+1);
  39     p->type = PA_PACKET_APPENDED;
  40     return p;
  41 }
  42
  43 struct pa_packet* pa_packet_new_dynamic(uint8_t* data, size_t length) {
  44     struct pa_packet *p;
  45     assert(data && length);
  46     p = pa_xmalloc(sizeof(struct pa_packet));
  47     p->ref = 1;
  48     p->length = length;
  49     p->data = data;
  50     p->type = PA_PACKET_DYNAMIC;
  51     return p;
  52 }
  53
  54 struct pa_packet* pa_packet_ref(struct pa_packet *p) {
  55     assert(p && p->ref >= 1);
  56     p->ref++;
  57     return p;
  58 }
  59
  60 void pa_packet_unref(struct pa_packet *p) {
  61     assert(p && p->ref >= 1);
  62     p->ref--;
  63
  64     if (p->ref == 0) {
  65         if (p->type == PA_PACKET_DYNAMIC)
  66             pa_xfree(p->data);
  67         pa_xfree(p);
  68     }
  69 }