content/renderer/media/webcontentdecryptionmodule_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 CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
   6 #define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/strings/string16.h"
  12 #include "third_party/WebKit/public/platform/WebContentDecryptionModule.h"
  13
  14 namespace media {
  15 class Decryptor;
  16 class MediaKeys;
  17 }
  18
  19 namespace content {
  20
  21 class WebContentDecryptionModuleSessionImpl;
  22 class SessionIdAdapter;
  23
  24 class WebContentDecryptionModuleImpl
  25     : public blink::WebContentDecryptionModule {
  26  public:
  27   static WebContentDecryptionModuleImpl* Create(
  28       const base::string16& key_system);
  29
  30   virtual ~WebContentDecryptionModuleImpl();
  31
  32   // Returns the Decryptor associated with this CDM. May be NULL if no
  33   // Decryptor associated with the MediaKeys object.
  34   // TODO(jrummell): Figure out lifetimes, as WMPI may still use the decryptor
  35   // after WebContentDecryptionModule is freed. http://crbug.com/330324
  36   media::Decryptor* GetDecryptor();
  37
  38   // blink::WebContentDecryptionModule implementation.
  39   virtual blink::WebContentDecryptionModuleSession* createSession(
  40       blink::WebContentDecryptionModuleSession::Client* client);
  41
  42  private:
  43   // Takes ownership of |media_keys| and |adapter|.
  44   WebContentDecryptionModuleImpl(scoped_ptr<media::MediaKeys> media_keys,
  45                                  scoped_ptr<SessionIdAdapter> adapter);
  46
  47   // Called when a WebContentDecryptionModuleSessionImpl is closed.
  48   void OnSessionClosed(uint32 session_id);
  49
  50   scoped_ptr<media::MediaKeys> media_keys_;
  51   scoped_ptr<SessionIdAdapter> adapter_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleImpl);
  54 };
  55
  56 // Allow typecasting from blink type as this is the only implementation.
  57 inline WebContentDecryptionModuleImpl* ToWebContentDecryptionModuleImpl(
  58     blink::WebContentDecryptionModule* cdm) {
  59   return static_cast<WebContentDecryptionModuleImpl*>(cdm);
  60 }
  61
  62 }  // namespace content
  63
  64 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_