1 files changed, 67 insertions, 0 deletions
diff --git a/src/atom_dref.cpp b/src/atom_dref.cpp
new file mode 100644
index 0000000..9d04f6d
--- /dev/null
+++ b/src/atom_dref.cpp
@@ -0,0 +1,67 @@
+/*
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is MPEG4IP.
+ *
+ * The Initial Developer of the Original Code is Cisco Systems Inc.
+ * Portions created by Cisco Systems Inc. are
+ * Copyright (C) Cisco Systems Inc. 2001.  All Rights Reserved.
+ *
+ * Contributor(s):
+ *      Dave Mackie     dmackie@cisco.com
+ */
+
+#include "src/impl.h"
+
+namespace mp4v2 {
+namespace impl {
+
+///////////////////////////////////////////////////////////////////////////////
+
+MP4DrefAtom::MP4DrefAtom()
+        : MP4Atom("dref")
+{
+    AddVersionAndFlags();
+
+    MP4Integer32Property* pCount =
+        new MP4Integer32Property("entryCount");
+    pCount->SetReadOnly();
+    AddProperty(pCount);
+
+    ExpectChildAtom("url ", Optional, Many);
+    ExpectChildAtom("urn ", Optional, Many);
+    ExpectChildAtom("alis", Optional, Many);
+}
+
+void MP4DrefAtom::Read()
+{
+    /* do the usual read */
+    MP4Atom::Read();
+
+    // check that number of children == entryCount
+    MP4Integer32Property* pCount =
+        (MP4Integer32Property*)m_pProperties[2];
+
+    if (m_pChildAtoms.Size() != pCount->GetValue()) {
+        VERBOSE_READ(GetVerbosity(),
+                     MP4Printf("Warning: dref inconsistency with number of entries"));
+
+        /* fix it */
+        pCount->SetReadOnly(false);
+        pCount->SetValue(m_pChildAtoms.Size());
+        pCount->SetReadOnly(true);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}
+} // namespace mp4v2::impl