Support HLS MPEG2 TS with SAMPLE-AES encryption.

media/formats/mp2t/ts_section_cets_ecm.h

Index: media/formats/mp2t/ts_section_cets_ecm.h
diff --git a/media/formats/mp2t/ts_section_cets_ecm.h b/media/formats/mp2t/ts_section_cets_ecm.h
new file mode 100644
index 0000000000000000000000000000000000000000..baf0f6e12d64756ba71817e58f87632b0a566194
--- /dev/null
+++ b/media/formats/mp2t/ts_section_cets_ecm.h
@@ -0,0 +1,47 @@
+// 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_CETS_ECM_H_
+#define MEDIA_FORMATS_MP2T_TS_SECTION_CETS_ECM_H_
+
+#include <stdint.h>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "media/base/byte_queue.h"
+#include "media/formats/mp2t/ts_section.h"
+
+namespace media {
+
+class BitReader;
+class DecryptConfig;
+
+namespace mp2t {
+
+class TsSectionCetsEcm : public TsSection {
+ public:
+  // RegisterDecryptConfigCb::Run(const DecryptConfig& decrypt_config);
+  using RegisterDecryptConfigCb =
+      base::Callback<void(const DecryptConfig& decrypt_config)>;
+  explicit TsSectionCetsEcm(
+      const RegisterDecryptConfigCb& register_decrypt_config_cb);
+  ~TsSectionCetsEcm() override;
+
+  // TsSection implementation.
+  bool Parse(bool payload_unit_start_indicator,
+             const uint8_t* buf,
+             int size) override;
+  void Flush() override;
+  void Reset() override;
+
+ private:
+  RegisterDecryptConfigCb register_decrypt_config_cb_;
+
+  DISALLOW_COPY_AND_ASSIGN(TsSectionCetsEcm);
+};
+
+}  // namespace mp2t
+}  // namespace media
+
+#endif