media/mojo/services/mojo_cdm_service.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_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
   6 #define MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
   7
   8 #include "base/callback.h"
   9 #include "base/macros.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "media/base/media_keys.h"
  13 #include "media/mojo/interfaces/content_decryption_module.mojom.h"
  14 #include "mojo/public/cpp/bindings/interface_impl.h"
  15
  16 namespace media {
  17
  18 // A mojo::ContentDecryptionModule implementation backed by a media::MediaKeys.
  19 class MojoCdmService
  20     : public mojo::InterfaceImpl<mojo::ContentDecryptionModule> {
  21  public:
  22   MojoCdmService(const mojo::String& key_system);
  23   ~MojoCdmService() final;
  24
  25   // mojo::ContentDecryptionModule implementation.
  26   void SetServerCertificate(
  27       mojo::Array<uint8_t> certificate_data,
  28       const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
  29   void CreateSessionAndGenerateRequest(
  30       mojo::ContentDecryptionModule::SessionType session_type,
  31       const mojo::String& init_data_type,
  32       mojo::Array<uint8_t> init_data,
  33       const mojo::Callback<void(mojo::CdmPromiseResultPtr, mojo::String)>&
  34           callback) final;
  35   void LoadSession(mojo::ContentDecryptionModule::SessionType session_type,
  36                    const mojo::String& session_id,
  37                    const mojo::Callback<void(mojo::CdmPromiseResultPtr,
  38                                              mojo::String)>& callback) final;
  39   void UpdateSession(
  40       const mojo::String& session_id,
  41       mojo::Array<uint8_t> response,
  42       const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
  43   void CloseSession(
  44       const mojo::String& session_id,
  45       const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
  46   void RemoveSession(
  47       const mojo::String& session_id,
  48       const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
  49   void GetCdmContext(int32_t cdm_id,
  50                      mojo::InterfaceRequest<mojo::Decryptor> decryptor) final;
  51
  52  private:
  53   // Callbacks for firing session events.
  54   void OnSessionMessage(const std::string& session_id,
  55                         MediaKeys::MessageType message_type,
  56                         const std::vector<uint8_t>& message,
  57                         const GURL& legacy_destination_url);
  58   void OnSessionKeysChange(const std::string& session_id,
  59                            bool has_additional_usable_key,
  60                            CdmKeysInfo keys_info);
  61   void OnSessionExpirationUpdate(const std::string& session_id,
  62                                  const base::Time& new_expiry_time);
  63   void OnSessionClosed(const std::string& session_id);
  64   void OnSessionError(const std::string& session_id,
  65                       MediaKeys::Exception exception,
  66                       uint32_t system_code,
  67                       const std::string& error_message);
  68
  69   scoped_ptr<MediaKeys> cdm_;
  70
  71   base::WeakPtrFactory<MojoCdmService> weak_factory_;
  72   base::WeakPtr<MojoCdmService> weak_this_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(MojoCdmService);
  75 };
  76
  77 }  // namespace media
  78
  79 #endif  // MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_