content/browser/media/android/media_drm_credential_manager.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_BROWSER_MEDIA_ANDROID_MEDIA_DRM_CREDENTIAL_MANAGER_H_
   6 #define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_DRM_CREDENTIAL_MANAGER_H_
   7
   8 #include <jni.h>
   9 #include <string>
  10
  11 #include "base/callback.h"
  12 #include "base/memory/singleton.h"
  13 #include "media/base/android/media_drm_bridge.h"
  14
  15 namespace content {
  16
  17 // This class manages the media DRM credentials on Android.
  18 class MediaDrmCredentialManager {
  19  public:
  20   static MediaDrmCredentialManager* GetInstance();
  21
  22   typedef base::Callback<void(bool)> ResetCredentialsCB;
  23
  24   // Called to reset the DRM credentials. (for Java)
  25   // Only clears credentials for Widevine.
  26   // TODO(ddorwin): This should accept a key system parameter so that this is
  27   // clear to the caller, which can call it repeatedly as necessary.
  28   // http://crbug.com/459400
  29   static void ResetCredentials(JNIEnv* env, jclass clazz, jobject callback);
  30
  31   // Called to reset the DRM credentials. The result is returned in the
  32   // |reset_credentials_cb|.
  33   void ResetCredentials(const ResetCredentialsCB& reset_credentials_cb);
  34
  35   static bool RegisterMediaDrmCredentialManager(JNIEnv* env);
  36
  37  private:
  38   friend struct DefaultSingletonTraits<MediaDrmCredentialManager>;
  39   friend class Singleton<MediaDrmCredentialManager>;
  40   typedef media::MediaDrmBridge::SecurityLevel SecurityLevel;
  41
  42   MediaDrmCredentialManager();
  43   ~MediaDrmCredentialManager();
  44
  45   // Callback function passed to MediaDrmBridge. It is called when credentials
  46   // reset is completed.
  47   void OnResetCredentialsCompleted(SecurityLevel security_level, bool success);
  48
  49   // Resets DRM credentials for a particular |security_level|. Returns false if
  50   // we fail to create the MediaDrmBridge at all, in which case we cannot reset
  51   // the credentials. Otherwise, the result is returned asynchronously in
  52   // OnResetCredentialsCompleted() function.
  53   bool ResetCredentialsInternal(SecurityLevel security_level);
  54
  55   // The MediaDrmBridge object used to perform the credential reset.
  56   scoped_ptr<media::MediaDrmBridge> media_drm_bridge_;
  57
  58   // The callback provided by the caller.
  59   ResetCredentialsCB reset_credentials_cb_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(MediaDrmCredentialManager);
  62 };
  63
  64 }  // namespace content
  65
  66 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_DRM_CREDENTIAL_MANAGER_H_