ppb_testing_proxy.cc revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d 
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.
4
5#include "ppapi/proxy/ppb_testing_proxy.h"
6
7#include "base/message_loop.h"
8#include "ppapi/c/dev/ppb_testing_dev.h"
9#include "ppapi/proxy/enter_proxy.h"
10#include "ppapi/proxy/plugin_dispatcher.h"
11#include "ppapi/proxy/ppapi_messages.h"
12#include "ppapi/shared_impl/ppapi_globals.h"
13#include "ppapi/shared_impl/proxy_lock.h"
14#include "ppapi/shared_impl/resource.h"
15#include "ppapi/shared_impl/resource_tracker.h"
16#include "ppapi/thunk/enter.h"
17#include "ppapi/thunk/ppb_graphics_2d_api.h"
18#include "ppapi/thunk/ppb_input_event_api.h"
19
20using ppapi::thunk::EnterInstance;
21using ppapi::thunk::EnterResource;
22using ppapi::thunk::EnterResourceNoLock;
23using ppapi::thunk::PPB_Graphics2D_API;
24using ppapi::thunk::PPB_InputEvent_API;
25
26namespace ppapi {
27namespace proxy {
28
29namespace {
30
31PP_Bool ReadImageData(PP_Resource graphics_2d,
32                      PP_Resource image,
33                      const PP_Point* top_left) {
34  ProxyAutoLock lock;
35  Resource* image_object =
36      PpapiGlobals::Get()->GetResourceTracker()->GetResource(image);
37  if (!image_object)
38    return PP_FALSE;
39  Resource* graphics_2d_object =
40      PpapiGlobals::Get()->GetResourceTracker()->GetResource(graphics_2d);
41  if (!graphics_2d_object ||
42      image_object->pp_instance() != graphics_2d_object->pp_instance())
43    return PP_FALSE;
44
45  EnterResourceNoLock<PPB_Graphics2D_API> enter(graphics_2d, true);
46  if (enter.failed())
47    return PP_FALSE;
48  const HostResource& host_image = image_object->host_resource();
49  return enter.object()->ReadImageData(host_image.host_resource(), top_left) ?
50      PP_TRUE : PP_FALSE;
51}
52
53void RunMessageLoop(PP_Instance instance) {
54  base::MessageLoop::ScopedNestableTaskAllower allow(
55      base::MessageLoop::current());
56  CHECK(PpapiGlobals::Get()->GetMainThreadMessageLoop()->
57      BelongsToCurrentThread());
58  base::MessageLoop::current()->Run();
59}
60
61void QuitMessageLoop(PP_Instance instance) {
62  CHECK(PpapiGlobals::Get()->GetMainThreadMessageLoop()->
63            BelongsToCurrentThread());
64  base::MessageLoop::current()->QuitNow();
65}
66
67uint32_t GetLiveObjectsForInstance(PP_Instance instance_id) {
68  ProxyAutoLock lock;
69  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance_id);
70  if (!dispatcher)
71    return static_cast<uint32_t>(-1);
72
73  uint32_t result = 0;
74  dispatcher->Send(new PpapiHostMsg_PPBTesting_GetLiveObjectsForInstance(
75      API_ID_PPB_TESTING, instance_id, &result));
76  return result;
77}
78
79PP_Bool IsOutOfProcess() {
80  return PP_TRUE;
81}
82
83void SimulateInputEvent(PP_Instance instance_id, PP_Resource input_event) {
84  ProxyAutoLock lock;
85  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance_id);
86  if (!dispatcher)
87    return;
88  EnterResourceNoLock<PPB_InputEvent_API> enter(input_event, false);
89  if (enter.failed())
90    return;
91
92  const InputEventData& input_event_data = enter.object()->GetInputEventData();
93  dispatcher->Send(new PpapiHostMsg_PPBTesting_SimulateInputEvent(
94      API_ID_PPB_TESTING, instance_id, input_event_data));
95}
96
97PP_Var GetDocumentURL(PP_Instance instance, PP_URLComponents_Dev* components) {
98  EnterInstance enter(instance);
99  if (enter.failed())
100    return PP_MakeUndefined();
101  return enter.functions()->GetDocumentURL(instance, components);
102}
103
104// TODO(dmichael): Ideally we could get a way to check the number of vars in the
105// host-side tracker when running out-of-process, to make sure the proxy does
106// not leak host-side vars.
107uint32_t GetLiveVars(PP_Var live_vars[], uint32_t array_size) {
108  ProxyAutoLock lock;
109  std::vector<PP_Var> vars =
110      PpapiGlobals::Get()->GetVarTracker()->GetLiveVars();
111  for (size_t i = 0u;
112       i < std::min(static_cast<size_t>(array_size), vars.size());
113       ++i)
114    live_vars[i] = vars[i];
115  return vars.size();
116}
117
118void SetMinimumArrayBufferSizeForShmem(PP_Instance instance,
119                                       uint32_t threshold) {
120  ProxyAutoLock lock;
121  RawVarDataGraph::SetMinimumArrayBufferSizeForShmemForTest(threshold);
122  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
123  if (!dispatcher)
124    return;
125  dispatcher->Send(
126      new PpapiHostMsg_PPBTesting_SetMinimumArrayBufferSizeForShmem(
127          API_ID_PPB_TESTING, threshold));
128}
129
130const PPB_Testing_Dev testing_interface = {
131  &ReadImageData,
132  &RunMessageLoop,
133  &QuitMessageLoop,
134  &GetLiveObjectsForInstance,
135  &IsOutOfProcess,
136  &SimulateInputEvent,
137  &GetDocumentURL,
138  &GetLiveVars,
139  &SetMinimumArrayBufferSizeForShmem
140};
141
142InterfaceProxy* CreateTestingProxy(Dispatcher* dispatcher) {
143  return new PPB_Testing_Proxy(dispatcher);
144}
145
146}  // namespace
147
148PPB_Testing_Proxy::PPB_Testing_Proxy(Dispatcher* dispatcher)
149    : InterfaceProxy(dispatcher),
150      ppb_testing_impl_(NULL) {
151  if (!dispatcher->IsPlugin()) {
152    ppb_testing_impl_ = static_cast<const PPB_Testing_Dev*>(
153        dispatcher->local_get_interface()(PPB_TESTING_DEV_INTERFACE));
154  }
155}
156
157PPB_Testing_Proxy::~PPB_Testing_Proxy() {
158}
159
160// static
161const InterfaceProxy::Info* PPB_Testing_Proxy::GetInfo() {
162  static const Info info = {
163    &testing_interface,
164    PPB_TESTING_DEV_INTERFACE,
165    API_ID_PPB_TESTING,
166    false,
167    &CreateTestingProxy,
168  };
169  return &info;
170}
171
172bool PPB_Testing_Proxy::OnMessageReceived(const IPC::Message& msg) {
173  if (!dispatcher()->permissions().HasPermission(PERMISSION_TESTING))
174    return false;
175
176  bool handled = true;
177  IPC_BEGIN_MESSAGE_MAP(PPB_Testing_Proxy, msg)
178    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_ReadImageData,
179                        OnMsgReadImageData)
180    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_GetLiveObjectsForInstance,
181                        OnMsgGetLiveObjectsForInstance)
182    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_SimulateInputEvent,
183                        OnMsgSimulateInputEvent)
184    IPC_MESSAGE_HANDLER(
185        PpapiHostMsg_PPBTesting_SetMinimumArrayBufferSizeForShmem,
186        OnMsgSetMinimumArrayBufferSizeForShmem)
187    IPC_MESSAGE_UNHANDLED(handled = false)
188  IPC_END_MESSAGE_MAP()
189  return handled;
190}
191
192void PPB_Testing_Proxy::OnMsgReadImageData(
193    const HostResource& device_context_2d,
194    const HostResource& image,
195    const PP_Point& top_left,
196    PP_Bool* result) {
197  *result = ppb_testing_impl_->ReadImageData(
198      device_context_2d.host_resource(), image.host_resource(), &top_left);
199}
200
201void PPB_Testing_Proxy::OnMsgRunMessageLoop(PP_Instance instance) {
202  ppb_testing_impl_->RunMessageLoop(instance);
203}
204
205void PPB_Testing_Proxy::OnMsgQuitMessageLoop(PP_Instance instance) {
206  ppb_testing_impl_->QuitMessageLoop(instance);
207}
208
209void PPB_Testing_Proxy::OnMsgGetLiveObjectsForInstance(PP_Instance instance,
210                                                       uint32_t* result) {
211  *result = ppb_testing_impl_->GetLiveObjectsForInstance(instance);
212}
213
214void PPB_Testing_Proxy::OnMsgSimulateInputEvent(
215    PP_Instance instance,
216    const InputEventData& input_event) {
217  scoped_refptr<PPB_InputEvent_Shared> input_event_impl(
218      new PPB_InputEvent_Shared(OBJECT_IS_PROXY, instance, input_event));
219  ppb_testing_impl_->SimulateInputEvent(instance,
220                                        input_event_impl->pp_resource());
221}
222
223void PPB_Testing_Proxy::OnMsgSetMinimumArrayBufferSizeForShmem(
224    uint32_t threshold) {
225  RawVarDataGraph::SetMinimumArrayBufferSizeForShmemForTest(threshold);
226}
227
228}  // namespace proxy
229}  // namespace ppapi
230