1 files changed, 56 insertions, 0 deletions
diff --git a/dom/media/mp4/SinfParser.h b/dom/media/mp4/SinfParser.h
new file mode 100644
index 0000000000..084892854c
--- /dev/null
+++ b/dom/media/mp4/SinfParser.h
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SINF_PARSER_H_
+#define SINF_PARSER_H_
+
+#include "mozilla/ResultExtensions.h"
+#include "Atom.h"
+#include "AtomType.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+class Box;
+
+class Sinf : public Atom {
+ public:
+  Sinf()
+      : mDefaultIVSize(0),
+        mDefaultEncryptionType(),
+        mDefaultCryptByteBlock(0),
+        mDefaultSkipByteBlock(0) {}
+  explicit Sinf(Box& aBox);
+
+  bool IsValid() override {
+    return !!mDefaultEncryptionType &&  // Should have an encryption scheme
+           (mDefaultIVSize > 0 ||       // and either a default IV size
+            mDefaultConstantIV.Length() > 0);  // or a constant IV.
+  }
+
+  uint8_t mDefaultIVSize;
+  AtomType mDefaultEncryptionType;
+  uint8_t mDefaultKeyID[16];
+  uint8_t mDefaultCryptByteBlock;
+  uint8_t mDefaultSkipByteBlock;
+  CopyableTArray<uint8_t> mDefaultConstantIV;
+};
+
+class SinfParser {
+ public:
+  explicit SinfParser(Box& aBox);
+
+  Sinf& GetSinf() { return mSinf; }
+
+ private:
+  Result<Ok, nsresult> ParseSchm(Box& aBox);
+  Result<Ok, nsresult> ParseSchi(Box& aBox);
+  Result<Ok, nsresult> ParseTenc(Box& aBox);
+
+  Sinf mSinf;
+};
+
+}  // namespace mozilla
+
+#endif  // SINF_PARSER_H_