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/callback.h"
  11 #include "base/containers/scoped_ptr_hash_map.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "media/base/media_export.h"
  15 #include "media/blink/key_system_config_selector.h"
  16 #include "third_party/WebKit/public/platform/WebEncryptedMediaClient.h"
  17
  18 namespace blink {
  19
  20 class WebContentDecryptionModuleResult;
  21 struct WebMediaKeySystemConfiguration;
  22 class WebSecurityOrigin;
  23
  24 }  // namespace blink
  25
  26 namespace media {
  27
  28 struct CdmConfig;
  29 class CdmFactory;
  30 class KeySystems;
  31 class MediaPermission;
  32
  33 class MEDIA_EXPORT WebEncryptedMediaClientImpl
  34     : public blink::WebEncryptedMediaClient {
  35  public:
  36   WebEncryptedMediaClientImpl(
  37       base::Callback<bool(void)> are_secure_codecs_supported_cb,
  38       CdmFactory* cdm_factory,
  39       MediaPermission* media_permission);
  40   virtual ~WebEncryptedMediaClientImpl();
  41
  42   // WebEncryptedMediaClient implementation.
  43   virtual void requestMediaKeySystemAccess(
  44       blink::WebEncryptedMediaRequest request);
  45
  46   // Create the CDM for |key_system| and |security_origin|. The caller owns
  47   // the created cdm (passed back using |result|).
  48   void CreateCdm(const blink::WebString& key_system,
  49                  const blink::WebSecurityOrigin& security_origin,
  50                  const CdmConfig& cdm_config,
  51                  blink::WebContentDecryptionModuleResult result);
  52
  53  private:
  54   // Report usage of key system to UMA. There are 2 different counts logged:
  55   // 1. The key system is requested.
  56   // 2. The requested key system and options are supported.
  57   // Each stat is only reported once per renderer frame per key system.
  58   class Reporter;
  59
  60   // Complete a requestMediaKeySystemAccess() request with a supported
  61   // accumulated configuration.
  62   void OnRequestSucceeded(
  63       blink::WebEncryptedMediaRequest request,
  64       const blink::WebMediaKeySystemConfiguration& accumulated_configuration,
  65       const CdmConfig& cdm_config);
  66
  67   // Complete a requestMediaKeySystemAccess() request with an error message.
  68   void OnRequestNotSupported(blink::WebEncryptedMediaRequest request,
  69                              const blink::WebString& error_message);
  70
  71   // Gets the Reporter for |key_system|. If it doesn't already exist,
  72   // create one.
  73   Reporter* GetReporter(const blink::WebString& key_system);
  74
  75   // Reporter singletons.
  76   base::ScopedPtrHashMap<std::string, scoped_ptr<Reporter>> reporters_;
  77
  78   base::Callback<bool(void)> are_secure_codecs_supported_cb_;
  79   CdmFactory* cdm_factory_;
  80   KeySystemConfigSelector key_system_config_selector_;
  81   base::WeakPtrFactory<WebEncryptedMediaClientImpl> weak_factory_;
  82 };
  83
  84 }  // namespace media
  85
  86 #endif  // MEDIA_BLINK_WEBENCRYPTEDMEDIACLIENT_IMPL_H_