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      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_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
      6 #define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/callback.h"
     13 #include "media/base/media_keys.h"
     14 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h"
     15 #include "third_party/WebKit/public/platform/WebString.h"
     16 
     17 namespace media {
     18 class MediaKeys;
     19 }
     20 
     21 namespace content {
     22 
     23 class WebContentDecryptionModuleSessionImpl
     24     : public blink::WebContentDecryptionModuleSession {
     25  public:
     26   typedef base::Callback<void(uint32 session_id)> SessionClosedCB;
     27 
     28   WebContentDecryptionModuleSessionImpl(
     29       uint32 session_id,
     30       media::MediaKeys* media_keys,
     31       Client* client,
     32       const SessionClosedCB& session_closed_cb);
     33   virtual ~WebContentDecryptionModuleSessionImpl();
     34 
     35   // blink::WebContentDecryptionModuleSession implementation.
     36   virtual blink::WebString sessionId() const OVERRIDE;
     37   virtual void generateKeyRequest(const blink::WebString& mime_type,
     38                                   const uint8* init_data,
     39                                   size_t init_data_length) OVERRIDE;
     40   virtual void update(const uint8* response, size_t response_length) OVERRIDE;
     41   virtual void close() OVERRIDE;
     42 
     43   // Callbacks.
     44   void OnSessionCreated(const std::string& web_session_id);
     45   void OnSessionMessage(const std::vector<uint8>& message,
     46                         const std::string& destination_url);
     47   void OnSessionReady();
     48   void OnSessionClosed();
     49   void OnSessionError(media::MediaKeys::KeyError error_code, int system_code);
     50 
     51  private:
     52   // Non-owned pointers.
     53   media::MediaKeys* media_keys_;
     54   Client* client_;
     55 
     56   SessionClosedCB session_closed_cb_;
     57 
     58   // Web session ID is the app visible ID for this session generated by the CDM.
     59   // This value is not set until the CDM calls OnSessionCreated().
     60   blink::WebString web_session_id_;
     61 
     62   // Session ID is used to uniquely track this object so that CDM callbacks
     63   // can get routed to the correct object.
     64   const uint32 session_id_;
     65 
     66   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
     67 };
     68 
     69 }  // namespace content
     70 
     71 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
     72