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_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_H_ 6 #define CONTENT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "base/memory/scoped_ptr.h" 12 #include "content/common/content_export.h" 13 14 namespace content { 15 16 // Prefixed EME API only supports prefixed (webkit-) key system name for 17 // certain key systems. But internally only unprefixed key systems are 18 // supported. The following two functions help convert between prefixed and 19 // unprefixed key system names. 20 21 // Gets the unprefixed key system name for |key_system|. 22 std::string GetUnprefixedKeySystemName(const std::string& key_system); 23 24 // Gets the prefixed key system name for |key_system|. 25 std::string GetPrefixedKeySystemName(const std::string& key_system); 26 27 // Returns whether |key_system| is a real supported key system that can be 28 // instantiated. 29 // Abstract parent |key_system| strings will return false. 30 // Call IsSupportedKeySystemWithMediaMimeType() to determine whether a 31 // |key_system| supports a specific type of media or to check parent key 32 // systems. 33 CONTENT_EXPORT bool IsConcreteSupportedKeySystem(const std::string& key_system); 34 35 // Returns whether |key_sytem| supports the specified media type and codec(s). 36 CONTENT_EXPORT bool IsSupportedKeySystemWithMediaMimeType( 37 const std::string& mime_type, 38 const std::vector<std::string>& codecs, 39 const std::string& key_system); 40 41 // Returns a name for |key_system| suitable to UMA logging. 42 CONTENT_EXPORT std::string KeySystemNameForUMA(const std::string& key_system); 43 44 // Returns whether AesDecryptor can be used for the given |concrete_key_system|. 45 CONTENT_EXPORT bool CanUseAesDecryptor(const std::string& concrete_key_system); 46 47 #if defined(ENABLE_PEPPER_CDMS) 48 // Returns the Pepper MIME type for |concrete_key_system|. 49 // Returns empty string if |concrete_key_system| is unknown or not Pepper-based. 50 CONTENT_EXPORT std::string GetPepperType( 51 const std::string& concrete_key_system); 52 #endif 53 54 #if defined(UNIT_TEST) 55 // Helper functions to add container/codec types for testing purposes. 56 CONTENT_EXPORT void AddContainerMask(const std::string& container, uint32 mask); 57 CONTENT_EXPORT void AddCodecMask(const std::string& codec, uint32 mask); 58 #endif // defined(UNIT_TEST) 59 60 } // namespace content 61 62 #endif // CONTENT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_H_ 63
