media/blink/webcontentdecryptionmodulesession_impl.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 MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
   6 #define MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "media/base/media_keys.h"
  16 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h"
  17 #include "third_party/WebKit/public/platform/WebString.h"
  18
  19 namespace media {
  20
  21 class CdmSessionAdapter;
  22 class MediaKeys;
  23
  24 class WebContentDecryptionModuleSessionImpl
  25     : public blink::WebContentDecryptionModuleSession {
  26  public:
  27   WebContentDecryptionModuleSessionImpl(
  28       const scoped_refptr<CdmSessionAdapter>& adapter);
  29   virtual ~WebContentDecryptionModuleSessionImpl();
  30
  31   // blink::WebContentDecryptionModuleSession implementation.
  32   virtual void setClientInterface(Client* client);
  33   virtual blink::WebString sessionId() const;
  34
  35   virtual void initializeNewSession(
  36       blink::WebEncryptedMediaInitDataType init_data_type,
  37       const unsigned char* initData,
  38       size_t initDataLength,
  39       blink::WebEncryptedMediaSessionType session_type,
  40       blink::WebContentDecryptionModuleResult result);
  41   virtual void initializeNewSession(
  42       const blink::WebString& init_data_type,
  43       const uint8* init_data,
  44       size_t init_data_length,
  45       const blink::WebString& session_type,
  46       blink::WebContentDecryptionModuleResult result);
  47   virtual void load(const blink::WebString& session_id,
  48                     blink::WebContentDecryptionModuleResult result);
  49   virtual void update(const uint8* response,
  50                       size_t response_length,
  51                       blink::WebContentDecryptionModuleResult result);
  52   virtual void close(blink::WebContentDecryptionModuleResult result);
  53   virtual void remove(blink::WebContentDecryptionModuleResult result);
  54
  55   // Callbacks.
  56   void OnSessionMessage(MediaKeys::MessageType message_type,
  57                         const std::vector<uint8>& message);
  58   void OnSessionKeysChange(bool has_additional_usable_key,
  59                            CdmKeysInfo keys_info);
  60   void OnSessionExpirationUpdate(const base::Time& new_expiry_time);
  61   void OnSessionClosed();
  62
  63  private:
  64   // Called when a new session is created.
  65   blink::WebContentDecryptionModuleResult::SessionStatus OnSessionInitialized(
  66       const std::string& session_id);
  67
  68   scoped_refptr<CdmSessionAdapter> adapter_;
  69
  70   // Non-owned pointer.
  71   Client* client_;
  72
  73   // Session ID is the app visible ID for this session generated by the CDM.
  74   // This value is not set until the CDM resolves the initializeNewSession()
  75   // promise.
  76   std::string session_id_;
  77
  78   // Don't pass more than 1 close() event to blink::
  79   // TODO(jrummell): Remove this once blink tests handle close() promise and
  80   // closed() event.
  81   bool is_closed_;
  82
  83   // Since promises will live until they are fired, use a weak reference when
  84   // creating a promise in case this class disappears before the promise
  85   // actually fires.
  86   base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
  87
  88   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
  89 };
  90
  91 }  // namespace media
  92
  93 #endif  // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_