Support HLS MPEG2 TS with SAMPLE-AES encryption.

media/formats/mp2t/ts_section_cat.h

Index: media/formats/mp2t/ts_section_cat.h
diff --git a/media/formats/mp2t/ts_section_cat.h b/media/formats/mp2t/ts_section_cat.h
new file mode 100644
index 0000000000000000000000000000000000000000..dbeb505d577780bbaa1018e09a8ca1c673ea169b
--- /dev/null
+++ b/media/formats/mp2t/ts_section_cat.h
@@ -0,0 +1,38 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_FORMATS_MP2T_TS_SECTION_CAT_H_
+#define MEDIA_FORMATS_MP2T_TS_SECTION_CAT_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "media/formats/mp2t/ts_section_psi.h"
+
+namespace media {
+namespace mp2t {
+
+class TsSectionCat : public TsSectionPsi {
+ public:
+  // RegisterCencPidsCb::Run(int ca_pid, int pssh_pid);
+  using RegisterCencPidsCb = base::Callback<void(int, int)>;
+  explicit TsSectionCat(const RegisterCencPidsCb& register_cenc_ids_cb);
+  ~TsSectionCat() override;
+
+  // TsSectionPsi implementation.
+  bool ParsePsiSection(BitReader* bit_reader) override;
+  void ResetPsiSection() override;
+
+ private:
+  RegisterCencPidsCb register_cenc_ids_cb_;
+
+  // Parameters from the CAT.
+  int version_number_;
+
+  DISALLOW_COPY_AND_ASSIGN(TsSectionCat);
+};
+
+}  // namespace mp2t
+}  // namespace media
+
+#endif