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 14namespace 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|. 22std::string GetUnprefixedKeySystemName(const std::string& key_system); 23 24// Gets the prefixed key system name for |key_system|. 25std::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. 33CONTENT_EXPORT bool IsConcreteSupportedKeySystem(const std::string& key_system); 34 35// Returns whether |key_sytem| supports the specified media type and codec(s). 36CONTENT_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. 42CONTENT_EXPORT std::string KeySystemNameForUMA(const std::string& key_system); 43 44// Returns whether AesDecryptor can be used for the given |concrete_key_system|. 45CONTENT_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. 50CONTENT_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. 56CONTENT_EXPORT void AddContainerMask(const std::string& container, uint32 mask); 57CONTENT_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