1 files changed, 98 insertions, 0 deletions
diff --git a/src/atom_mdhd.cpp b/src/atom_mdhd.cpp
new file mode 100644
index 0000000..9dfff27
--- /dev/null
+++ b/src/atom_mdhd.cpp
@@ -0,0 +1,98 @@
+/*
+ * 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 {
+
+///////////////////////////////////////////////////////////////////////////////
+
+MP4MdhdAtom::MP4MdhdAtom()
+        : MP4Atom("mdhd")
+{
+    AddVersionAndFlags();
+}
+
+void MP4MdhdAtom::AddProperties(uint8_t version)
+{
+    if (version == 1) {
+        AddProperty(
+            new MP4Integer64Property("creationTime"));
+        AddProperty(
+            new MP4Integer64Property("modificationTime"));
+    } else {
+        AddProperty(
+            new MP4Integer32Property("creationTime"));
+        AddProperty(
+            new MP4Integer32Property("modificationTime"));
+    }
+
+    AddProperty(
+        new MP4Integer32Property("timeScale"));
+
+    if (version == 1) {
+        AddProperty(
+            new MP4Integer64Property("duration"));
+    } else {
+        AddProperty(
+            new MP4Integer32Property("duration"));
+    }
+
+    AddProperty( new MP4LanguageCodeProperty( "language" ));
+    AddReserved("reserved", 2);
+}
+
+void MP4MdhdAtom::Generate()
+{
+    uint8_t version = m_pFile->Use64Bits(GetType()) ? 1 : 0;
+    SetVersion(version);
+    AddProperties(version);
+
+    MP4Atom::Generate();
+
+    // set creation and modification times
+    MP4Timestamp now = MP4GetAbsTimestamp();
+    if (version == 1) {
+        ((MP4Integer64Property*)m_pProperties[2])->SetValue(now);
+        ((MP4Integer64Property*)m_pProperties[3])->SetValue(now);
+    } else {
+        ((MP4Integer32Property*)m_pProperties[2])->SetValue(now);
+        ((MP4Integer32Property*)m_pProperties[3])->SetValue(now);
+    }
+}
+
+void MP4MdhdAtom::Read()
+{
+    /* read atom version */
+    ReadProperties(0, 1);
+
+    /* need to create the properties based on the atom version */
+    AddProperties(GetVersion());
+
+    /* now we can read the remaining properties */
+    ReadProperties(1);
+
+    Skip(); // to end of atom
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}} // namespace mp4v2::impl