really create glitch-free branch

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2120 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 81 insertions, 0 deletions

diff --git a/src/pulsecore/packet.c b/src/pulsecore/packet.c
new file mode 100644
index 00000000..2706efea
--- /dev/null
+++ b/src/pulsecore/packet.c
@@ -0,0 +1,81 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+
+#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+
+#include "packet.h"
+
+pa_packet* pa_packet_new(size_t length) {
+    pa_packet *p;
+
+    pa_assert(length > 0);
+
+    p = pa_xmalloc(PA_ALIGN(sizeof(pa_packet)) + length);
+    PA_REFCNT_INIT(p);
+    p->length = length;
+    p->data = (uint8_t*) p + PA_ALIGN(sizeof(pa_packet));
+    p->type = PA_PACKET_APPENDED;
+
+    return p;
+}
+
+pa_packet* pa_packet_new_dynamic(void* data, size_t length) {
+    pa_packet *p;
+
+    pa_assert(data);
+    pa_assert(length > 0);
+
+    p = pa_xnew(pa_packet, 1);
+    PA_REFCNT_INIT(p);
+    p->length = length;
+    p->data = data;
+    p->type = PA_PACKET_DYNAMIC;
+
+    return p;
+}
+
+pa_packet* pa_packet_ref(pa_packet *p) {
+    pa_assert(p);
+    pa_assert(PA_REFCNT_VALUE(p) >= 1);
+
+    PA_REFCNT_INC(p);
+    return p;
+}
+
+void pa_packet_unref(pa_packet *p) {
+    pa_assert(p);
+    pa_assert(PA_REFCNT_VALUE(p) >= 1);
+
+    if (PA_REFCNT_DEC(p) <= 0) {
+        if (p->type == PA_PACKET_DYNAMIC)
+            pa_xfree(p->data);
+        pa_xfree(p);
+    }
+}