content/renderer/media/crypto/key_systems.h

   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 blink {
  15 class WebString;
  16 }
  17
  18 namespace content {
  19
  20 // Returns whether |key_system| is a real supported key system that can be
  21 // instantiated.
  22 // Abstract parent |key_system| strings will return false.
  23 // Call IsSupportedKeySystemWithMediaMimeType() to determine whether a
  24 // |key_system| supports a specific type of media or to check parent key
  25 // systems.
  26 CONTENT_EXPORT bool IsConcreteSupportedKeySystem(
  27     const blink::WebString& key_system);
  28
  29 // Returns whether |key_sytem| supports the specified media type and codec(s).
  30 CONTENT_EXPORT bool IsSupportedKeySystemWithMediaMimeType(
  31     const std::string& mime_type,
  32     const std::vector<std::string>& codecs,
  33     const std::string& key_system);
  34
  35 // Returns a name for |key_system| suitable to UMA logging.
  36 CONTENT_EXPORT std::string KeySystemNameForUMA(
  37     const blink::WebString& key_system);
  38 CONTENT_EXPORT std::string KeySystemNameForUMA(const std::string& key_system);
  39
  40 // Returns whether AesDecryptor can be used for the given |concrete_key_system|.
  41 CONTENT_EXPORT bool CanUseAesDecryptor(const std::string& concrete_key_system);
  42
  43 #if defined(ENABLE_PEPPER_CDMS)
  44 // Returns the Pepper MIME type for |concrete_key_system|.
  45 // Returns empty string if |concrete_key_system| is unknown or not Pepper-based.
  46 CONTENT_EXPORT std::string GetPepperType(
  47     const std::string& concrete_key_system);
  48 #elif defined(OS_ANDROID)
  49 // Convert |concrete_key_system| to 16-byte Android UUID.
  50 CONTENT_EXPORT std::vector<uint8> GetUUID(
  51     const std::string& concrete_key_system);
  52 #endif
  53
  54 }  // namespace content
  55
  56 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_KEY_SYSTEMS_H_