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/cdm_factory.h"
  14 #include "media/base/media_export.h"
  15 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
  16 #include "third_party/WebKit/public/platform/WebEncryptedMediaClient.h"
  17 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  18
  19 namespace media {
  20
  21 class MediaPermission;
  22
  23 class MEDIA_EXPORT WebEncryptedMediaClientImpl
  24     : public blink::WebEncryptedMediaClient {
  25  public:
  26   WebEncryptedMediaClientImpl(scoped_ptr<CdmFactory> cdm_factory,
  27                               MediaPermission* media_permission);
  28   virtual ~WebEncryptedMediaClientImpl();
  29
  30   // WebEncryptedMediaClient implementation.
  31   virtual void requestMediaKeySystemAccess(
  32       blink::WebEncryptedMediaRequest request);
  33
  34   // Create the CDM for |key_system| and |security_origin|. The caller owns
  35   // the created cdm (passed back using |result|).
  36   void CreateCdm(const blink::WebString& key_system,
  37                  const blink::WebSecurityOrigin& security_origin,
  38                  blink::WebContentDecryptionModuleResult result);
  39
  40  private:
  41   // Pick a supported configuration if possible, and complete the request. This
  42   // method may asynchronously invoke itself after prompting for permissions.
  43   void SelectSupportedConfiguration(blink::WebEncryptedMediaRequest request,
  44                                     bool was_permission_requested,
  45                                     bool is_permission_granted);
  46
  47   // Report usage of key system to UMA. There are 2 different counts logged:
  48   // 1. The key system is requested.
  49   // 2. The requested key system and options are supported.
  50   // Each stat is only reported once per renderer frame per key system.
  51   class Reporter;
  52
  53   // Gets the Reporter for |key_system|. If it doesn't already exist,
  54   // create one.
  55   Reporter* GetReporter(const std::string& key_system);
  56
  57   // Key system <-> Reporter map.
  58   typedef base::ScopedPtrHashMap<std::string, Reporter> Reporters;
  59   Reporters reporters_;
  60
  61   scoped_ptr<CdmFactory> cdm_factory_;
  62   MediaPermission* media_permission_;
  63
  64   base::WeakPtrFactory<WebEncryptedMediaClientImpl> weak_factory_;
  65 };
  66
  67 }  // namespace media
  68
  69 #endif  // MEDIA_BLINK_WEBENCRYPTEDMEDIACLIENT_IMPL_H_