--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst-libs/gst/rtsp/gstrtspbase64.c	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,150 @@
+/* GStreamer
+ * Copyright (C) <2007> Mike Smith <msmith@xiph.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:gstrtspbase64
+ * @short_description: Helper functions to handle Base64
+ *
+ * Last reviewed on 2007-07-24 (0.10.14)
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstrtspbase64.h"
+
+static char base64table[64] = {
+  'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
+  'P',
+  'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e',
+  'f',
+  'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
+  'v',
+  'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
+};
+
+/**
+ * gst_rtsp_base64_encode:
+ * @data: the binary data to encode
+ * @len: the length of @data
+ *
+ * Encode a sequence of binary data into its Base-64 stringified representation.
+ *
+ * Returns: a newly allocated, zero-terminated Base-64 encoded string
+ * representing @data.
+ */
+/* This isn't efficient, but it doesn't need to be */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+gchar *
+gst_rtsp_base64_encode (const gchar * data, gsize len)
+{
+  gchar *out = g_malloc (len * 4 / 3 + 4);
+  gchar *result = out;
+  int chunk;
+
+  while (len > 0) {
+    chunk = (len > 3) ? 3 : len;
+    *out++ = base64table[(*data & 0xFC) >> 2];
+    *out++ = base64table[((*data & 0x03) << 4) | ((*(data + 1) & 0xF0) >> 4)];
+    switch (chunk) {
+      case 3:
+        *out++ =
+            base64table[((*(data + 1) & 0x0F) << 2) | ((*(data +
+                        2) & 0xC0) >> 6)];
+        *out++ = base64table[(*(data + 2)) & 0x3F];
+        break;
+      case 2:
+        *out++ = base64table[((*(data + 1) & 0x0F) << 2)];
+        *out++ = '=';
+        break;
+      case 1:
+        *out++ = '=';
+        *out++ = '=';
+        break;
+    }
+    data += chunk;
+    len -= chunk;
+  }
+  *out = 0;
+
+  return result;
+}
+
+/**
+ * gst_rtsp_base64_decode_ip:
+ * @data: the base64 encoded data
+ * @len: location for output length or NULL
+ *
+ * Decode the base64 string pointed to by @data in-place. When @len is not #NULL
+ * it will contain the length of the decoded data.
+ */
+void
+gst_rtsp_base64_decode_ip (gchar * data, gsize * len)
+{
+  char dtable[256];
+  int i, j, k = 0, n = strlen (data);
+
+  for (i = 0; i < 255; i++)
+    dtable[i] = 0x80;
+  for (i = 'A'; i <= 'Z'; i++)
+    dtable[i] = 0 + (i - 'A');
+  for (i = 'a'; i <= 'z'; i++)
+    dtable[i] = 26 + (i - 'a');
+  for (i = '0'; i <= '9'; i++)
+    dtable[i] = 52 + (i - '0');
+  dtable['+'] = 62;
+  dtable['/'] = 63;
+  dtable['='] = 0;
+
+  for (j = 0; j < n; j += 4) {
+    char a[4], b[4];
+
+    for (i = 0; i < 4; i++) {
+      int c = data[i + j];
+
+      if (dtable[c] & 0x80) {
+        if (len)
+          *len = 0;
+        return;
+      }
+      a[i] = (char) c;
+      b[i] = (char) dtable[c];
+    }
+    data[k++] = (b[0] << 2) | (b[1] >> 4);
+    data[k++] = (b[1] << 4) | (b[2] >> 2);
+    data[k++] = (b[2] << 6) | b[3];
+    i = a[2] == '=' ? 1 : (a[3] == '=' ? 2 : 3);
+    if (i < 3) {
+      data[k] = 0;
+      if (len)
+        *len = k;
+      return;
+    }
+  }
+  data[k] = 0;
+  if (len)
+    *len = k;
+  return;
+}