1 // Copyright (c) 2012 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/browser/renderer_host/pepper/pepper_gamepad_host.h"
8 #include "content/browser/gamepad/gamepad_service.h"
9 #include "content/public/browser/browser_ppapi_host.h"
10 #include "ppapi/c/pp_errors.h"
11 #include "ppapi/host/dispatch_host_message.h"
12 #include "ppapi/host/host_message_context.h"
13 #include "ppapi/host/ppapi_host.h"
14 #include "ppapi/proxy/ppapi_messages.h"
15 #include "ppapi/shared_impl/ppb_gamepad_shared.h"
19 PepperGamepadHost::PepperGamepadHost(BrowserPpapiHost
* host
,
22 : ResourceHost(host
->GetPpapiHost(), instance
, resource
),
23 browser_ppapi_host_(host
),
24 gamepad_service_(GamepadService::GetInstance()),
26 weak_factory_(this) {}
28 PepperGamepadHost::PepperGamepadHost(GamepadService
* gamepad_service
,
29 BrowserPpapiHost
* host
,
32 : ResourceHost(host
->GetPpapiHost(), instance
, resource
),
33 browser_ppapi_host_(host
),
34 gamepad_service_(gamepad_service
),
36 weak_factory_(this) {}
38 PepperGamepadHost::~PepperGamepadHost() {
40 gamepad_service_
->RemoveConsumer(this);
43 int32_t PepperGamepadHost::OnResourceMessageReceived(
44 const IPC::Message
& msg
,
45 ppapi::host::HostMessageContext
* context
) {
46 PPAPI_BEGIN_MESSAGE_MAP(PepperGamepadHost
, msg
)
47 PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Gamepad_RequestMemory
,
49 PPAPI_END_MESSAGE_MAP()
50 return PP_ERROR_FAILED
;
53 int32_t PepperGamepadHost::OnRequestMemory(
54 ppapi::host::HostMessageContext
* context
) {
56 return PP_ERROR_FAILED
;
58 gamepad_service_
->ConsumerBecameActive(this);
61 // Don't send the shared memory back until the user has interacted with the
62 // gamepad. This is to prevent fingerprinting and matches what the web
64 gamepad_service_
->RegisterForUserGesture(
65 base::Bind(&PepperGamepadHost::GotUserGesture
,
66 weak_factory_
.GetWeakPtr(),
67 context
->MakeReplyMessageContext()));
68 return PP_OK_COMPLETIONPENDING
;
71 void PepperGamepadHost::GotUserGesture(
72 const ppapi::host::ReplyMessageContext
& context
) {
73 base::SharedMemoryHandle handle
=
74 gamepad_service_
->GetSharedMemoryHandleForProcess(
75 browser_ppapi_host_
->GetPluginProcessHandle());
77 context
.params
.AppendHandle(ppapi::proxy::SerializedHandle(
78 handle
, sizeof(ppapi::ContentGamepadHardwareBuffer
)));
79 host()->SendReply(context
, PpapiPluginMsg_Gamepad_SendMemory());
82 } // namespace content