media/blink/webencryptedmediaclient_impl.h

   1 // Copyright 2014 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 MEDIA_BLINK_WEBENCRYPTEDMEDIACLIENT_IMPL_H_
   6 #define MEDIA_BLINK_WEBENCRYPTEDMEDIACLIENT_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/containers/scoped_ptr_hash_map.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "media/base/media_export.h"
  14 #include "media/blink/key_system_config_selector.h"
  15 #include "third_party/WebKit/public/platform/WebEncryptedMediaClient.h"
  16
  17 namespace blink {
  18
  19 class WebContentDecryptionModuleResult;
  20 struct WebMediaKeySystemConfiguration;
  21 class WebSecurityOrigin;
  22
  23 }  // namespace blink
  24
  25 namespace media {
  26
  27 class CdmFactory;
  28 class KeySystems;
  29 class MediaPermission;
  30
  31 class MEDIA_EXPORT WebEncryptedMediaClientImpl
  32     : public blink::WebEncryptedMediaClient {
  33  public:
  34   WebEncryptedMediaClientImpl(CdmFactory* cdm_factory,
  35                               MediaPermission* media_permission);
  36   virtual ~WebEncryptedMediaClientImpl();
  37
  38   // WebEncryptedMediaClient implementation.
  39   virtual void requestMediaKeySystemAccess(
  40       blink::WebEncryptedMediaRequest request);
  41
  42   // Create the CDM for |key_system| and |security_origin|. The caller owns
  43   // the created cdm (passed back using |result|).
  44   void CreateCdm(const blink::WebString& key_system,
  45                  bool allow_distinctive_identifier,
  46                  bool allow_persistent_state,
  47                  const blink::WebSecurityOrigin& security_origin,
  48                  blink::WebContentDecryptionModuleResult result);
  49
  50  private:
  51   // Report usage of key system to UMA. There are 2 different counts logged:
  52   // 1. The key system is requested.
  53   // 2. The requested key system and options are supported.
  54   // Each stat is only reported once per renderer frame per key system.
  55   class Reporter;
  56
  57   // Complete a requestMediaKeySystemAccess() request with a supported
  58   // accumulated configuration.
  59   void OnRequestSucceeded(
  60       blink::WebEncryptedMediaRequest request,
  61       const blink::WebMediaKeySystemConfiguration& accumulated_configuration);
  62
  63   // Complete a requestMediaKeySystemAccess() request with an error message.
  64   void OnRequestNotSupported(blink::WebEncryptedMediaRequest request,
  65                              const blink::WebString& error_message);
  66
  67   // Gets the Reporter for |key_system|. If it doesn't already exist,
  68   // create one.
  69   Reporter* GetReporter(const blink::WebString& key_system);
  70
  71   // Reporter singletons.
  72   base::ScopedPtrHashMap<std::string, Reporter> reporters_;
  73
  74   CdmFactory* cdm_factory_;
  75   KeySystemConfigSelector key_system_config_selector_;
  76   base::WeakPtrFactory<WebEncryptedMediaClientImpl> weak_factory_;
  77 };
  78
  79 }  // namespace media
  80
  81 #endif  // MEDIA_BLINK_WEBENCRYPTEDMEDIACLIENT_IMPL_H_