webkit/media/crypto/key_systems.h

   1 // Copyright (c) 2012 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_H_
   6 #define WEBKIT_MEDIA_CRYPTO_KEY_SYSTEMS_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12
  13 namespace WebKit {
  14 class WebString;
  15 }
  16
  17 namespace webkit_media {
  18
  19 // Returns whether |key_sytem| is supported at all.
  20 // Call IsSupportedKeySystemWithMediaMimeType() to determine whether a
  21 // |key_system| supports a specific type of media.
  22 bool IsSupportedKeySystem(const WebKit::WebString& key_system);
  23
  24 // Returns whether |key_sytem| supports the specified media type and codec(s).
  25 bool IsSupportedKeySystemWithMediaMimeType(
  26     const std::string& mime_type,
  27     const std::vector<std::string>& codecs,
  28     const std::string& key_system);
  29
  30 // Returns a name for |key_system| suitable to UMA logging.
  31 std::string KeySystemNameForUMA(const std::string& key_system);
  32 std::string KeySystemNameForUMA(const WebKit::WebString& key_system);
  33
  34 // Returns whether AesDecryptor can be used for the given |key_system|.
  35 bool CanUseAesDecryptor(const std::string& key_system);
  36
  37 // Returns the plugin type given a |key_system|.
  38 // Returns an empty string if no plugin type is found for |key_system|.
  39 std::string GetPluginType(const std::string& key_system);
  40
  41 }  // namespace webkit_media
  42
  43 #endif  // WEBKIT_MEDIA_CRYPTO_KEY_SYSTEMS_H_