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 load(const blink::WebString& session_id,
  42                     blink::WebContentDecryptionModuleResult result);
  43   virtual void update(const uint8* response,
  44                       size_t response_length,
  45                       blink::WebContentDecryptionModuleResult result);
  46   virtual void close(blink::WebContentDecryptionModuleResult result);
  47   virtual void remove(blink::WebContentDecryptionModuleResult result);
  48
  49   // Callbacks.
  50   void OnSessionMessage(MediaKeys::MessageType message_type,
  51                         const std::vector<uint8>& message);
  52   void OnSessionKeysChange(bool has_additional_usable_key,
  53                            CdmKeysInfo keys_info);
  54   void OnSessionExpirationUpdate(const base::Time& new_expiry_time);
  55   void OnSessionClosed();
  56
  57  private:
  58   // Called when a new session is created.
  59   blink::WebContentDecryptionModuleResult::SessionStatus OnSessionInitialized(
  60       const std::string& session_id);
  61
  62   scoped_refptr<CdmSessionAdapter> adapter_;
  63
  64   // Non-owned pointer.
  65   Client* client_;
  66
  67   // Session ID is the app visible ID for this session generated by the CDM.
  68   // This value is not set until the CDM resolves the initializeNewSession()
  69   // promise.
  70   std::string session_id_;
  71
  72   // Don't pass more than 1 close() event to blink::
  73   // TODO(jrummell): Remove this once blink tests handle close() promise and
  74   // closed() event.
  75   bool is_closed_;
  76
  77   // Since promises will live until they are fired, use a weak reference when
  78   // creating a promise in case this class disappears before the promise
  79   // actually fires.
  80   base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
  83 };
  84
  85 }  // namespace media
  86
  87 #endif  // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_