Initial community commit

1 files changed, 91 insertions, 0 deletions

diff --git a/Src/external_dependencies/libmp4v2/atom_mdhd.cpp b/Src/external_dependencies/libmp4v2/atom_mdhd.cpp
new file mode 100644
index 00000000..87894bb5
--- /dev/null
+++ b/Src/external_dependencies/libmp4v2/atom_mdhd.cpp
@@ -0,0 +1,91 @@
+/*
+ * 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 "mp4common.h"
+
+MP4MdhdAtom::MP4MdhdAtom() 
+	: MP4Atom("mdhd") 
+{
+	AddVersionAndFlags();
+}
+
+void MP4MdhdAtom::AddProperties(u_int8_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 MP4Integer16Property("language"));
+	AddReserved("reserved", 2);
+}
+
+void MP4MdhdAtom::Generate() 
+{
+	u_int8_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
+}