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.
5 #include "content/renderer/pepper/resource_converter.h"
8 #include "base/message_loop/message_loop.h"
9 #include "content/public/renderer/renderer_ppapi_host.h"
10 #include "content/renderer/pepper/pepper_file_system_host.h"
11 #include "content/renderer/pepper/pepper_media_stream_audio_track_host.h"
12 #include "content/renderer/pepper/pepper_media_stream_video_track_host.h"
13 #include "ipc/ipc_message.h"
14 #include "ppapi/host/ppapi_host.h"
15 #include "ppapi/host/resource_host.h"
16 #include "ppapi/proxy/ppapi_messages.h"
17 #include "ppapi/shared_impl/resource_var.h"
18 #include "ppapi/shared_impl/scoped_pp_var.h"
19 #include "third_party/WebKit/public/platform/WebFileSystem.h"
20 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
21 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
22 #include "third_party/WebKit/public/web/WebDOMFileSystem.h"
23 #include "third_party/WebKit/public/web/WebDOMMediaStreamTrack.h"
24 #include "third_party/WebKit/public/web/WebLocalFrame.h"
25 #include "webkit/common/fileapi/file_system_util.h"
27 using ppapi::ResourceVar;
33 const base::Callback<void(bool)>& callback,
34 const std::vector<scoped_refptr<content::HostResourceVar> >& browser_vars,
35 const std::vector<int>& pending_host_ids) {
36 CHECK(browser_vars.size() == pending_host_ids.size());
37 for (size_t i = 0; i < browser_vars.size(); ++i) {
38 browser_vars[i]->set_pending_browser_host_id(pending_host_ids[i]);
43 // Converts a blink::WebFileSystem::Type to a PP_FileSystemType.
44 PP_FileSystemType WebFileSystemTypeToPPAPI(blink::WebFileSystem::Type type) {
46 case blink::WebFileSystem::TypeTemporary:
47 return PP_FILESYSTEMTYPE_LOCALTEMPORARY;
48 case blink::WebFileSystem::TypePersistent:
49 return PP_FILESYSTEMTYPE_LOCALPERSISTENT;
50 case blink::WebFileSystem::TypeIsolated:
51 return PP_FILESYSTEMTYPE_ISOLATED;
52 case blink::WebFileSystem::TypeExternal:
53 return PP_FILESYSTEMTYPE_EXTERNAL;
56 return PP_FILESYSTEMTYPE_LOCALTEMPORARY;
60 // Converts a fileapi::FileSystemType to a blink::WebFileSystemType.
61 // Returns true on success, false if |type| does not correspond to a
63 bool FileApiFileSystemTypeToWebFileSystemType(
64 fileapi::FileSystemType type,
65 blink::WebFileSystemType* result_type) {
67 case fileapi::kFileSystemTypeTemporary:
68 *result_type = blink::WebFileSystemTypeTemporary;
70 case fileapi::kFileSystemTypePersistent:
71 *result_type = blink::WebFileSystemTypePersistent;
73 case fileapi::kFileSystemTypeIsolated:
74 *result_type = blink::WebFileSystemTypeIsolated;
76 case fileapi::kFileSystemTypeExternal:
77 *result_type = blink::WebFileSystemTypeExternal;
84 // Given a V8 value containing a DOMFileSystem, creates a resource host and
85 // returns the resource information for serialization.
87 bool DOMFileSystemToResource(
89 RendererPpapiHost* host,
90 const blink::WebDOMFileSystem& dom_file_system,
91 int* pending_renderer_id,
92 scoped_ptr<IPC::Message>* create_message,
93 scoped_ptr<IPC::Message>* browser_host_create_message) {
94 DCHECK(!dom_file_system.isNull());
96 PP_FileSystemType file_system_type =
97 WebFileSystemTypeToPPAPI(dom_file_system.type());
98 GURL root_url = dom_file_system.rootURL();
100 // Raw external file system access is not allowed, but external file system
101 // access through fileapi is allowed. (Without this check, there would be a
102 // CHECK failure in FileRefResource.)
103 if ((file_system_type == PP_FILESYSTEMTYPE_EXTERNAL) &&
104 (!root_url.is_valid())) {
108 *pending_renderer_id = host->GetPpapiHost()->AddPendingResourceHost(
109 scoped_ptr<ppapi::host::ResourceHost>(new PepperFileSystemHost(
110 host, instance, 0, root_url, file_system_type)));
111 if (*pending_renderer_id == 0)
114 create_message->reset(
115 new PpapiPluginMsg_FileSystem_CreateFromPendingHost(file_system_type));
117 browser_host_create_message->reset(
118 new PpapiHostMsg_FileSystem_CreateFromRenderer(root_url.spec(),
123 bool ResourceHostToDOMFileSystem(
124 content::PepperFileSystemHost* file_system_host,
125 v8::Handle<v8::Context> context,
126 v8::Handle<v8::Value>* dom_file_system) {
127 GURL root_url = file_system_host->GetRootUrl();
129 fileapi::FileSystemType type;
130 base::FilePath virtual_path;
131 fileapi::ParseFileSystemSchemeURL(root_url, &origin, &type, &virtual_path);
133 std::string name = fileapi::GetFileSystemName(origin, type);
134 blink::WebFileSystemType blink_type;
135 if (!FileApiFileSystemTypeToWebFileSystemType(type, &blink_type))
137 blink::WebLocalFrame* frame = blink::WebLocalFrame::frameForContext(context);
138 blink::WebDOMFileSystem web_dom_file_system = blink::WebDOMFileSystem::create(
141 blink::WebString::fromUTF8(name),
143 blink::WebDOMFileSystem::SerializableTypeSerializable);
144 *dom_file_system = web_dom_file_system.toV8Value();
148 bool ResourceHostToDOMMediaStreamVideoTrack(
149 content::PepperMediaStreamVideoTrackHost* host,
150 v8::Handle<v8::Context> context,
151 v8::Handle<v8::Value>* dom_video_track) {
152 // TODO(ronghuawu): Implement this once crbug/352219 is resolved.
153 // blink::WebMediaStreamTrack track = host->track();
154 // *dom_video_track = track.toV8Value();
158 bool DOMMediaStreamTrackToResource(
159 PP_Instance instance,
160 RendererPpapiHost* host,
161 const blink::WebDOMMediaStreamTrack& dom_media_stream_track,
162 int* pending_renderer_id,
163 scoped_ptr<IPC::Message>* create_message) {
164 DCHECK(!dom_media_stream_track.isNull());
165 *pending_renderer_id = 0;
166 #if defined(ENABLE_WEBRTC)
167 const blink::WebMediaStreamTrack track = dom_media_stream_track.component();
168 const std::string id = track.source().id().utf8();
170 if (track.source().type() == blink::WebMediaStreamSource::TypeVideo) {
171 *pending_renderer_id = host->GetPpapiHost()->AddPendingResourceHost(
172 scoped_ptr<ppapi::host::ResourceHost>(
173 new PepperMediaStreamVideoTrackHost(host, instance, 0, track)));
174 if (*pending_renderer_id == 0)
177 create_message->reset(
178 new PpapiPluginMsg_MediaStreamVideoTrack_CreateFromPendingHost(id));
180 } else if (track.source().type() == blink::WebMediaStreamSource::TypeAudio) {
181 *pending_renderer_id = host->GetPpapiHost()->AddPendingResourceHost(
182 scoped_ptr<ppapi::host::ResourceHost>(
183 new PepperMediaStreamAudioTrackHost(host, instance, 0, track)));
184 if (*pending_renderer_id == 0)
187 create_message->reset(
188 new PpapiPluginMsg_MediaStreamAudioTrack_CreateFromPendingHost(id));
197 ResourceConverter::~ResourceConverter() {}
199 ResourceConverterImpl::ResourceConverterImpl(PP_Instance instance,
200 RendererPpapiHost* host)
201 : instance_(instance), host_(host) {}
203 ResourceConverterImpl::~ResourceConverterImpl() {
204 // Verify Flush() was called.
205 DCHECK(browser_host_create_messages_.empty());
206 DCHECK(browser_vars.empty());
209 bool ResourceConverterImpl::FromV8Value(v8::Handle<v8::Object> val,
210 v8::Handle<v8::Context> context,
212 bool* was_resource) {
213 v8::Context::Scope context_scope(context);
214 v8::HandleScope handle_scope(context->GetIsolate());
216 *was_resource = false;
218 blink::WebDOMFileSystem dom_file_system =
219 blink::WebDOMFileSystem::fromV8Value(val);
220 if (!dom_file_system.isNull()) {
221 int pending_renderer_id;
222 scoped_ptr<IPC::Message> create_message;
223 scoped_ptr<IPC::Message> browser_host_create_message;
224 if (!DOMFileSystemToResource(instance_,
227 &pending_renderer_id,
229 &browser_host_create_message)) {
232 DCHECK(create_message);
233 DCHECK(browser_host_create_message);
234 scoped_refptr<HostResourceVar> result_var =
235 CreateResourceVarWithBrowserHost(
236 pending_renderer_id, *create_message, *browser_host_create_message);
237 *result = result_var->GetPPVar();
238 *was_resource = true;
242 blink::WebDOMMediaStreamTrack dom_media_stream_track =
243 blink::WebDOMMediaStreamTrack::fromV8Value(val);
244 if (!dom_media_stream_track.isNull()) {
245 int pending_renderer_id;
246 scoped_ptr<IPC::Message> create_message;
247 if (!DOMMediaStreamTrackToResource(instance_,
249 dom_media_stream_track,
250 &pending_renderer_id,
254 DCHECK(create_message);
255 scoped_refptr<HostResourceVar> result_var =
256 CreateResourceVar(pending_renderer_id, *create_message);
257 *result = result_var->GetPPVar();
258 *was_resource = true;
262 // The value was not convertible to a resource. Return true with
263 // |was_resource| set to false. As per the interface of FromV8Value, |result|
264 // may be left unmodified in this case.
268 void ResourceConverterImpl::Flush(const base::Callback<void(bool)>& callback) {
269 host_->CreateBrowserResourceHosts(
271 browser_host_create_messages_,
272 base::Bind(&FlushComplete, callback, browser_vars));
273 browser_host_create_messages_.clear();
274 browser_vars.clear();
277 bool ResourceConverterImpl::ToV8Value(const PP_Var& var,
278 v8::Handle<v8::Context> context,
279 v8::Handle<v8::Value>* result) {
280 DCHECK(var.type == PP_VARTYPE_RESOURCE);
282 ResourceVar* resource = ResourceVar::FromPPVar(var);
287 PP_Resource resource_id = resource->GetPPResource();
289 // Get the renderer-side resource host for this resource.
290 content::RendererPpapiHost* renderer_ppapi_host =
291 content::RendererPpapiHost::GetForPPInstance(instance_);
292 if (!renderer_ppapi_host) {
293 // This should never happen: the RendererPpapiHost is owned by the module
294 // and should outlive instances associated with it. However, if it doesn't
295 // for some reason, we do not want to crash.
299 ::ppapi::host::PpapiHost* ppapi_host = renderer_ppapi_host->GetPpapiHost();
300 ::ppapi::host::ResourceHost* resource_host =
301 ppapi_host->GetResourceHost(resource_id);
302 if (resource_host == NULL) {
303 LOG(ERROR) << "No resource host for resource #" << resource_id;
307 // Convert to the appropriate type of resource host.
308 if (resource_host->IsFileSystemHost()) {
309 return ResourceHostToDOMFileSystem(
310 static_cast<content::PepperFileSystemHost*>(resource_host),
313 } else if (resource_host->IsMediaStreamVideoTrackHost()) {
314 return ResourceHostToDOMMediaStreamVideoTrack(
315 static_cast<content::PepperMediaStreamVideoTrackHost*>(resource_host),
319 LOG(ERROR) << "The type of resource #" << resource_id
320 << " cannot be converted to a JavaScript object.";
325 scoped_refptr<HostResourceVar> ResourceConverterImpl::CreateResourceVar(
326 int pending_renderer_id,
327 const IPC::Message& create_message) {
328 return new HostResourceVar(pending_renderer_id, create_message);
331 scoped_refptr<HostResourceVar>
332 ResourceConverterImpl::CreateResourceVarWithBrowserHost(
333 int pending_renderer_id,
334 const IPC::Message& create_message,
335 const IPC::Message& browser_host_create_message) {
336 scoped_refptr<HostResourceVar> result =
337 CreateResourceVar(pending_renderer_id, create_message);
338 browser_host_create_messages_.push_back(browser_host_create_message);
339 browser_vars.push_back(result);
343 } // namespace content