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/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/strings/string16.h"
  13 #include "third_party/WebKit/public/platform/WebContentDecryptionModule.h"
  14
  15 namespace blink {
  16 #if defined(ENABLE_PEPPER_CDMS)
  17 class WebLocalFrame;
  18 #endif
  19 class WebSecurityOrigin;
  20 }
  21
  22 namespace media {
  23 class Decryptor;
  24 class MediaKeys;
  25 }
  26
  27 namespace content {
  28
  29 class CdmSessionAdapter;
  30 #if defined(ENABLE_BROWSER_CDMS)
  31 class RendererCdmManager;
  32 #endif
  33 class WebContentDecryptionModuleSessionImpl;
  34
  35 class WebContentDecryptionModuleImpl
  36     : public blink::WebContentDecryptionModule {
  37  public:
  38   static WebContentDecryptionModuleImpl* Create(
  39 #if defined(ENABLE_PEPPER_CDMS)
  40       blink::WebLocalFrame* frame,
  41 #elif defined(ENABLE_BROWSER_CDMS)
  42       RendererCdmManager* manager,
  43 #endif
  44       const blink::WebSecurityOrigin& security_origin,
  45       const base::string16& key_system);
  46
  47   virtual ~WebContentDecryptionModuleImpl();
  48
  49   // Returns the Decryptor associated with this CDM. May be NULL if no
  50   // Decryptor associated with the MediaKeys object.
  51   // TODO(jrummell): Figure out lifetimes, as WMPI may still use the decryptor
  52   // after WebContentDecryptionModule is freed. http://crbug.com/330324
  53   media::Decryptor* GetDecryptor();
  54
  55 #if defined(ENABLE_BROWSER_CDMS)
  56   // Returns the CDM ID associated with this object. May be kInvalidCdmId if no
  57   // CDM ID is associated, such as when Clear Key is used.
  58   int GetCdmId() const;
  59 #endif  // defined(ENABLE_BROWSER_CDMS)
  60
  61   // blink::WebContentDecryptionModule implementation.
  62   virtual blink::WebContentDecryptionModuleSession* createSession();
  63   // TODO(jrummell): Remove this method once blink updated.
  64   virtual blink::WebContentDecryptionModuleSession* createSession(
  65       blink::WebContentDecryptionModuleSession::Client* client);
  66
  67  private:
  68   // Takes reference to |adapter|.
  69   WebContentDecryptionModuleImpl(scoped_refptr<CdmSessionAdapter> adapter);
  70
  71   scoped_refptr<CdmSessionAdapter> adapter_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleImpl);
  74 };
  75
  76 // Allow typecasting from blink type as this is the only implementation.
  77 inline WebContentDecryptionModuleImpl* ToWebContentDecryptionModuleImpl(
  78     blink::WebContentDecryptionModule* cdm) {
  79   return static_cast<WebContentDecryptionModuleImpl*>(cdm);
  80 }
  81
  82 }  // namespace content
  83
  84 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULE_IMPL_H_