Widevine MediaCas client code that works with Android R

plugin/include/cas_media_id.h

@@ -0,0 +1,24 @@
+#ifndef CAS_MEDIA_ID_H
+#define CAS_MEDIA_ID_H
+
+namespace wvcas {
+
+class CasMediaId {
+ protected:
+  CasMediaId() {}
+
+ public:
+  CasMediaId(const CasMediaId&) = delete;
+  CasMediaId& operator=(const CasMediaId&) = delete;
+  virtual ~CasMediaId() {}
+  static std::unique_ptr<CasMediaId> create();
+  virtual CasStatus initialize(const std::string& init_data) = 0;
+  virtual const std::string content_id() = 0;
+  virtual const std::string provider_id() = 0;
+  virtual const int group_ids_size() = 0;
+  virtual const std::string group_id() = 0;
+};
+
+}  // namespace wvcas
+
+#endif  // CAS_MEDIA_ID_H