Reorganised the source tree. We now have src/ with a couple of subdirs:

* daemon/ - Contains the files specific to the polypaudio daemon.
 * modules/ - All loadable modules.
 * polyp/ - Files that are part of the public, application interface or
   are only used in libpolyp.
 * polypcore/ - All other shared files.
 * tests/ - Test programs.
 * utils/ - Utility programs.


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/polypcore/memchunk.c

@@ -0,0 +1,58 @@
+/* $Id$ */
+
+/***
+  This file is part of polypaudio.
+ 
+  polypaudio 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.
+ 
+  polypaudio 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 polypaudio; 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 <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+#include "memchunk.h"
+#include "xmalloc.h"
+
+void pa_memchunk_make_writable(pa_memchunk *c, pa_memblock_stat *s, size_t min) {
+    pa_memblock *n;
+    size_t l;
+    assert(c && c->memblock && c->memblock->ref >= 1);
+
+    if (c->memblock->ref == 1 && !c->memblock->read_only && c->memblock->length >= c->index+min)
+        return;
+
+    l = c->length;
+    if (l < min)
+        l = min;
+    
+    n = pa_memblock_new(l, s);
+    memcpy(n->data, (uint8_t*) c->memblock->data + c->index, c->length);
+    pa_memblock_unref(c->memblock);
+    c->memblock = n;
+    c->index = 0;
+}
+
+void pa_memchunk_reset(pa_memchunk *c) {
+    assert(c);
+
+    c->memblock = NULL;
+    c->length = c->index = 0;
+}