src/pulsecore/packet.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5
   6   PulseAudio 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   PulseAudio 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 PulseAudio; 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 <stdlib.h>
  27
  28 #include <pulse/xmalloc.h>
  29 #include <pulsecore/macro.h>
  30
  31 #include "packet.h"
  32
  33 pa_packet* pa_packet_new(size_t length) {
  34     pa_packet *p;
  35
  36     pa_assert(length > 0);
  37
  38     p = pa_xmalloc(PA_ALIGN(sizeof(pa_packet)) + length);
  39     PA_REFCNT_INIT(p);
  40     p->length = length;
  41     p->data = (uint8_t*) p + PA_ALIGN(sizeof(pa_packet));
  42     p->type = PA_PACKET_APPENDED;
  43
  44     return p;
  45 }
  46
  47 pa_packet* pa_packet_new_dynamic(void* data, size_t length) {
  48     pa_packet *p;
  49
  50     pa_assert(data);
  51     pa_assert(length > 0);
  52
  53     p = pa_xnew(pa_packet, 1);
  54     PA_REFCNT_INIT(p);
  55     p->length = length;
  56     p->data = data;
  57     p->type = PA_PACKET_DYNAMIC;
  58
  59     return p;
  60 }
  61
  62 pa_packet* pa_packet_ref(pa_packet *p) {
  63     pa_assert(p);
  64     pa_assert(PA_REFCNT_VALUE(p) >= 1);
  65
  66     PA_REFCNT_INC(p);
  67     return p;
  68 }
  69
  70 void pa_packet_unref(pa_packet *p) {
  71     pa_assert(p);
  72     pa_assert(PA_REFCNT_VALUE(p) >= 1);
  73
  74     if (PA_REFCNT_DEC(p) <= 0) {
  75         if (p->type == PA_PACKET_DYNAMIC)
  76             pa_xfree(p->data);
  77         pa_xfree(p);
  78     }
  79 }