1 // Copyright 2014 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 #if defined(ENABLE_PEPPER_CDMS)
6 #include "content/renderer/media/crypto/pepper_cdm_wrapper_impl.h"
7
8 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
9 #include "content/renderer/pepper/pepper_webplugin_impl.h"
10 #include "third_party/WebKit/public/platform/WebString.h"
11 #include "third_party/WebKit/public/web/WebDocument.h"
12 #include "third_party/WebKit/public/web/WebElement.h"
13 #include "third_party/WebKit/public/web/WebFrame.h"
14 #include "third_party/WebKit/public/web/WebHelperPlugin.h"
15 #include "third_party/WebKit/public/web/WebPlugin.h"
16 #include "third_party/WebKit/public/web/WebPluginContainer.h"
17 #include "third_party/WebKit/public/web/WebView.h"
18
19 namespace content {
20
operator ()(blink::WebHelperPlugin * plugin) const21 void WebHelperPluginDeleter::operator()(blink::WebHelperPlugin* plugin) const {
22 plugin->destroy();
23 }
24
Create(blink::WebLocalFrame * frame,const std::string & pluginType,const GURL & security_origin)25 scoped_ptr<PepperCdmWrapper> PepperCdmWrapperImpl::Create(
26 blink::WebLocalFrame* frame,
27 const std::string& pluginType,
28 const GURL& security_origin) {
29 DCHECK(frame);
30 ScopedHelperPlugin helper_plugin(blink::WebHelperPlugin::create(
31 blink::WebString::fromUTF8(pluginType), frame));
32 if (!helper_plugin)
33 return scoped_ptr<PepperCdmWrapper>();
34
35 blink::WebPlugin* plugin = helper_plugin->getPlugin();
36 DCHECK(!plugin->isPlaceholder()); // Prevented by Blink.
37
38 // Only Pepper plugins are supported, so it must ultimately be a ppapi object.
39 PepperWebPluginImpl* ppapi_plugin = static_cast<PepperWebPluginImpl*>(plugin);
40 scoped_refptr<PepperPluginInstanceImpl> plugin_instance =
41 ppapi_plugin->instance();
42 if (!plugin_instance.get())
43 return scoped_ptr<PepperCdmWrapper>();
44
45 GURL url(plugin_instance->container()->element().document().url());
46 CHECK_EQ(security_origin.GetOrigin(), url.GetOrigin())
47 << "Pepper instance has a different origin than the EME call.";
48
49 if (!plugin_instance->GetContentDecryptorDelegate())
50 return scoped_ptr<PepperCdmWrapper>();
51
52 return scoped_ptr<PepperCdmWrapper>(
53 new PepperCdmWrapperImpl(helper_plugin.Pass(), plugin_instance));
54 }
55
PepperCdmWrapperImpl(ScopedHelperPlugin helper_plugin,const scoped_refptr<PepperPluginInstanceImpl> & plugin_instance)56 PepperCdmWrapperImpl::PepperCdmWrapperImpl(
57 ScopedHelperPlugin helper_plugin,
58 const scoped_refptr<PepperPluginInstanceImpl>& plugin_instance)
59 : helper_plugin_(helper_plugin.Pass()),
60 plugin_instance_(plugin_instance) {
61 DCHECK(helper_plugin_);
62 DCHECK(plugin_instance_.get());
63 // Plugin must be a CDM.
64 DCHECK(plugin_instance_->GetContentDecryptorDelegate());
65 }
66
~PepperCdmWrapperImpl()67 PepperCdmWrapperImpl::~PepperCdmWrapperImpl() {
68 // Destroy the nested objects in reverse order.
69 plugin_instance_ = NULL;
70 helper_plugin_.reset();
71 }
72
GetCdmDelegate()73 ContentDecryptorDelegate* PepperCdmWrapperImpl::GetCdmDelegate() {
74 return plugin_instance_->GetContentDecryptorDelegate();
75 }
76
77 } // namespace content
78
79 #endif // defined(ENABLE_PEPPER_CDMS)
80