webkit/media/crypto/key_systems_info.h

   1 // Copyright (c) 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 WEBKIT_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_
   6 #define WEBKIT_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_
   7
   8 #include <string>
   9
  10 namespace webkit_media {
  11
  12 struct MediaFormatAndKeySystem {
  13   const char* mime_type;
  14   const char* codecs_list;
  15   const char* key_system;
  16 };
  17
  18 struct KeySystemPluginTypePair {
  19   const char* key_system;
  20   const char* plugin_type;
  21 };
  22
  23 // Specifies the container and codec combinations supported by individual
  24 // key systems. Each line is a container-codecs combination and the key system
  25 // that supports it. Multiple codecs can be listed. In all cases, the container
  26 // without a codec is also supported.
  27 // This list is converted at runtime into individual container-codec-key system
  28 // entries in KeySystems::key_system_map_.
  29 extern const MediaFormatAndKeySystem kSupportedFormatKeySystemCombinations[];
  30 extern const int kNumSupportedFormatKeySystemCombinations;
  31
  32 // There should be one entry for each key system.
  33 extern const KeySystemPluginTypePair kKeySystemToPluginTypeMapping[];
  34 extern const int kNumKeySystemToPluginTypeMapping;
  35
  36 // Returns whether |key_system| is compatible with the user's system.
  37 bool IsSystemCompatible(const std::string& key_system);
  38
  39 // Returns the name that UMA will use for the given |key_system|.
  40 // This function can be called frequently. Hence this function should be
  41 // implemented not to impact performance.
  42 std::string KeySystemNameForUMAGeneric(const std::string& key_system);
  43
  44 // Returns whether built-in AesDecryptor can be used for the given |key_system|.
  45 bool CanUseBuiltInAesDecryptor(const std::string& key_system);
  46
  47 }  // namespace webkit_media
  48
  49 #endif  // WEBKIT_MEDIA_CRYPTO_KEY_SYSTEMS_INFO_H_