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, 111 insertions, 0 deletions

diff --git a/src/pulsecore/dynarray.c b/src/pulsecore/dynarray.c
new file mode 100644
index 00000000..8bdb46fa
--- /dev/null
+++ b/src/pulsecore/dynarray.c
@@ -0,0 +1,111 @@
+/* $Id$ */
+
+/***
+  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 <string.h>
+#include <stdlib.h>
+
+#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+
+#include "dynarray.h"
+
+/* If the array becomes to small, increase its size by 100 entries */
+#define INCREASE_BY 100
+
+struct pa_dynarray {
+    void **data;
+    unsigned n_allocated, n_entries;
+};
+
+pa_dynarray* pa_dynarray_new(void) {
+    pa_dynarray *a;
+    a = pa_xnew(pa_dynarray, 1);
+    a->data = NULL;
+    a->n_entries = 0;
+    a->n_allocated = 0;
+    return a;
+}
+
+void pa_dynarray_free(pa_dynarray* a, void (*func)(void *p, void *userdata), void *userdata) {
+    unsigned i;
+    pa_assert(a);
+
+    if (func)
+        for (i = 0; i < a->n_entries; i++)
+            if (a->data[i])
+                func(a->data[i], userdata);
+
+    pa_xfree(a->data);
+    pa_xfree(a);
+}
+
+void pa_dynarray_put(pa_dynarray*a, unsigned i, void *p) {
+    pa_assert(a);
+
+    if (i >= a->n_allocated) {
+        unsigned n;
+
+        if (!p)
+            return;
+
+        n = i+INCREASE_BY;
+        a->data = pa_xrealloc(a->data, sizeof(void*)*n);
+        memset(a->data+a->n_allocated, 0, sizeof(void*)*(n-a->n_allocated));
+        a->n_allocated = n;
+    }
+
+    a->data[i] = p;
+
+    if (i >= a->n_entries)
+        a->n_entries = i+1;
+}
+
+unsigned pa_dynarray_append(pa_dynarray*a, void *p) {
+    unsigned i;
+
+    pa_assert(a);
+
+    i = a->n_entries;
+    pa_dynarray_put(a, i, p);
+    return i;
+}
+
+void *pa_dynarray_get(pa_dynarray*a, unsigned i) {
+    pa_assert(a);
+
+    if (i >= a->n_entries)
+        return NULL;
+
+    pa_assert(a->data);
+    return a->data[i];
+}
+
+unsigned pa_dynarray_size(pa_dynarray*a) {
+    pa_assert(a);
+
+    return a->n_entries;
+}