1 files changed, 79 insertions, 0 deletions
diff --git a/src/atom_stsz.cpp b/src/atom_stsz.cpp
new file mode 100644
index 0000000..a4e4a62
--- /dev/null
+++ b/src/atom_stsz.cpp
@@ -0,0 +1,79 @@
+/*
+ * 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 {
+
+///////////////////////////////////////////////////////////////////////////////
+
+MP4StszAtom::MP4StszAtom()
+        : MP4Atom("stsz")
+{
+    AddVersionAndFlags(); /* 0, 1 */
+
+    AddProperty( /* 2 */
+        new MP4Integer32Property("sampleSize"));
+
+    MP4Integer32Property* pCount =
+        new MP4Integer32Property("sampleCount");
+    AddProperty(pCount); /* 3 */
+
+    MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
+    AddProperty(pTable); /* 4 */
+
+    pTable->AddProperty( /* 4/0 */
+        new MP4Integer32Property("entrySize"));
+}
+
+void MP4StszAtom::Read()
+{
+    ReadProperties(0, 4);
+
+    uint32_t sampleSize =
+        ((MP4Integer32Property*)m_pProperties[2])->GetValue();
+
+    // only attempt to read entries table if sampleSize is zero
+    // i.e sample size is not constant
+    m_pProperties[4]->SetImplicit(sampleSize != 0);
+
+    ReadProperties(4);
+
+    Skip(); // to end of atom
+}
+
+void MP4StszAtom::Write()
+{
+    uint32_t sampleSize =
+        ((MP4Integer32Property*)m_pProperties[2])->GetValue();
+
+    // only attempt to write entries table if sampleSize is zero
+    // i.e sample size is not constant
+    m_pProperties[4]->SetImplicit(sampleSize != 0);
+
+    MP4Atom::Write();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}
+} // namespace mp4v2::impl