media/blink/webcontentdecryptionmoduleaccess_impl.cc

   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 #include "webcontentdecryptionmoduleaccess_impl.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/bind.h"
   9 #include "base/location.h"
  10 #include "base/message_loop/message_loop_proxy.h"
  11 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
  12 #include "webcontentdecryptionmodule_impl.h"
  13
  14 namespace media {
  15
  16 // The caller owns the created cdm (passed back using |result|).
  17 static void CreateCdm(CdmFactory* cdm_factory,
  18                       blink::WebSecurityOrigin security_origin,
  19                       blink::WebString key_system,
  20                       blink::WebContentDecryptionModuleResult result) {
  21   WebContentDecryptionModuleImpl::Create(cdm_factory, security_origin,
  22                                          key_system, result);
  23 }
  24
  25 WebContentDecryptionModuleAccessImpl*
  26 WebContentDecryptionModuleAccessImpl::Create(
  27     const blink::WebString& key_system,
  28     const blink::WebSecurityOrigin& security_origin,
  29     CdmFactory* cdm_factory) {
  30   return new WebContentDecryptionModuleAccessImpl(key_system, security_origin,
  31                                                   cdm_factory);
  32 }
  33
  34 WebContentDecryptionModuleAccessImpl::WebContentDecryptionModuleAccessImpl(
  35     const blink::WebString& key_system,
  36     const blink::WebSecurityOrigin& security_origin,
  37     CdmFactory* cdm_factory)
  38     : key_system_(key_system),
  39       security_origin_(security_origin),
  40       cdm_factory_(cdm_factory) {
  41 }
  42
  43 WebContentDecryptionModuleAccessImpl::~WebContentDecryptionModuleAccessImpl() {
  44 }
  45
  46 void WebContentDecryptionModuleAccessImpl::createContentDecryptionModule(
  47     blink::WebContentDecryptionModuleResult result) {
  48   // This method needs to run asynchronously, as it may need to load the CDM.
  49   // As this object's lifetime is controlled by MediaKeySystemAccess on the
  50   // blink side, copy all values needed by CreateCdm() in case the blink object
  51   // gets garbage-collected.
  52   base::MessageLoopProxy::current()->PostTask(
  53       FROM_HERE, base::Bind(&CreateCdm, cdm_factory_, security_origin_,
  54                             key_system_, result));
  55 }
  56
  57 }  // namespace media