1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_ 6 #define CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "base/containers/hash_tables.h" 13 #include "content/common/content_export.h" 14 #include "content/public/common/eme_codec.h" 15 16 // Definitions: 17 // * Key system 18 // https://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html#key-system 19 // * Concrete key system 20 // A key system string that can be instantiated, such as 21 // via the MediaKeys constructor. Examples include "org.w3.clearkey" and 22 // "com.widevine.alpha". 23 // * Abstract key system 24 // A key system string that cannot be instantiated like a concrete key system 25 // but is otherwise useful, such as in discovery using isTypeSupported(). 26 // * Parent key system 27 // A key system string that is one level up from the child key system. It may 28 // be an abstract key system. 29 // As an example, "com.example" is the parent of "com.example.foo". 30 31 namespace content { 32 33 // Contains information about an EME key system as well as how to instantiate 34 // the corresponding CDM. 35 struct CONTENT_EXPORT KeySystemInfo { 36 explicit KeySystemInfo(const std::string& key_system); 37 ~KeySystemInfo(); 38 39 std::string key_system; 40 41 // Specifies codecs supported by |key_system|. 42 SupportedCodecs supported_codecs; 43 44 // A hierarchical parent for |key_system|. This value can be used to check 45 // supported types but cannot be used to instantiate a MediaKeys object. 46 // Only one parent key system is currently supported per concrete key system. 47 std::string parent_key_system; 48 49 // The following indicate how the corresponding CDM should be instantiated. 50 bool use_aes_decryptor; 51 #if defined(ENABLE_PEPPER_CDMS) 52 std::string pepper_type; 53 #endif 54 }; 55 56 } // namespace content 57 58 #endif // CONTENT_PUBLIC_RENDERER_KEY_SYSTEM_INFO_H_ 59