Implement proxy for 3d-related interfaces

ppapi/proxy/ppb_surface_3d_proxy.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/proxy/ppb_surface_3d_proxy.h"
+
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/dev/ppb_surface_3d_dev.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/proxy/ppb_context_3d_proxy.h"
+
+namespace pp {
+namespace proxy {
+
+namespace {
+
+PP_Resource Create(PP_Instance instance,
+                   PP_Config3D_Dev config,
+                   const int32_t* attrib_list) {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_ERROR_BADARGUMENT;
+
+  std::vector<int32_t> attribs;
+  if (attrib_list) {
+    for (const int32_t* attr = attrib_list; attr; ++attr)
+      attribs.push_back(*attr);
+  } else {
+    attribs.push_back(0);
+  }
+
+  HostResource result;
+  dispatcher->Send(new PpapiHostMsg_PPBSurface3D_Create(
+      INTERFACE_ID_PPB_SURFACE_3D, instance, config, attribs, &result));
+
+  if (result.is_null())
+    return 0;
+  linked_ptr<Surface3D> surface_3d(new Surface3D(result));
+  PP_Resource resource =
+      PluginResourceTracker::GetInstance()->AddResource(surface_3d);
+  surface_3d->set_resource(resource);
+  return resource;
+}
+
+PP_Bool IsSurface3D(PP_Resource resource) {
+  Surface3D* object = PluginResource::GetAs<Surface3D>(resource);
+  return BoolToPPBool(!!object);
+}
+
+int32_t SetAttrib(PP_Resource surface_id,
+                  int32_t attribute,
+                  int32_t value) {
+  // TODO(alokp): Implement me.
+  return 0;
+}
+
+int32_t GetAttrib(PP_Resource surface_id,
+                  int32_t attribute,
+                  int32_t* value) {
+  // TODO(alokp): Implement me.
+  return 0;
+}
+
+int32_t SwapBuffers(PP_Resource surface_id,
+                    PP_CompletionCallback callback) {
+  Surface3D* object = PluginResource::GetAs<Surface3D>(surface_id);
+  if (!object)
+    return PP_ERROR_BADRESOURCE;
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(
+      object->instance());
+  if (!dispatcher)
+    return PP_ERROR_FAILED;
+
+  // For now, disallow blocking calls. We'll need to add support for other
+  // threads to this later.
+  if (!callback.func)
+    return PP_ERROR_BADARGUMENT;
+
+  if (object->is_flush_pending())
+    return PP_ERROR_INPROGRESS;  // Can't have >1 flush pending.
+
+  if (!object->context())
+    return PP_ERROR_FAILED;
+
+  object->set_current_flush_callback(callback);
+
+  IPC::Message* msg = new PpapiHostMsg_PPBSurface3D_SwapBuffers(
+      INTERFACE_ID_PPB_SURFACE_3D, object->host_resource());
+  msg->set_unblock(true);
+  dispatcher->Send(msg);
+
+  object->context()->gles2_impl()->SwapBuffers();
+
+  return PP_ERROR_WOULDBLOCK;
+}
+
+const PPB_Surface3D_Dev ppb_surface_3d = {
+  &Create,
+  &IsSurface3D,
+  &SetAttrib,
+  &GetAttrib,
+  &SwapBuffers
+};
+
+}  // namespace
+
+PPB_Surface3D_Proxy::PPB_Surface3D_Proxy(Dispatcher* dispatcher,
+                                         const void* target_interface)
+    : InterfaceProxy(dispatcher, target_interface),
+      callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+}
+
+PPB_Surface3D_Proxy::~PPB_Surface3D_Proxy() {
+}
+
+const void* PPB_Surface3D_Proxy::GetSourceInterface() const {
+  return &ppb_surface_3d;
+}
+
+InterfaceID PPB_Surface3D_Proxy::GetInterfaceId() const {
+  return INTERFACE_ID_PPB_SURFACE_3D;
+}
+
+bool PPB_Surface3D_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPB_Surface3D_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBSurface3D_Create,
+                        OnMsgCreate)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBSurface3D_SwapBuffers,
+                        OnMsgSwapBuffers)
+
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBSurface3D_SwapBuffersACK,
+                        OnMsgSwapBuffersACK)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  // FIXME(brettw) handle bad messages!
+  return handled;
+}
+
+void PPB_Surface3D_Proxy::OnMsgCreate(PP_Instance instance,
+                                      PP_Config3D_Dev config,
+                                      std::vector<int32_t> attribs,
+                                      HostResource* result) {
+  DCHECK(attribs.back() == 0);
+  PP_Resource resource =
+      ppb_surface_3d_target()->Create(instance, config, &attribs.front());
+  result->SetHostResource(instance, resource);
+}
+
+void PPB_Surface3D_Proxy::OnMsgSwapBuffers(const HostResource& surface_3d) {
+  CompletionCallback callback = callback_factory_.NewCallback(
+      &PPB_Surface3D_Proxy::SendSwapBuffersACKToPlugin, surface_3d);
+  int32_t result = ppb_surface_3d_target()->SwapBuffers(
+      surface_3d.host_resource(), callback.pp_completion_callback());
+  if (result != PP_ERROR_WOULDBLOCK) {
+    // There was some error, so we won't get a flush callback. We need to now
+    // issue the ACK to the plugin hears about the error. This will also clean
+    // up the data associated with the callback.
+    callback.Run(result);
+  }
+}
+
+void PPB_Surface3D_Proxy::OnMsgSwapBuffersACK(const HostResource& resource,
+                                              int32_t pp_error) {
+  PP_Resource plugin_resource =
+      PluginResourceTracker::GetInstance()->PluginResourceForHostResource(
+          resource);
+  if (!plugin_resource)
+    return;
+  Surface3D* object = PluginResource::GetAs<Surface3D>(plugin_resource);
+  if (!object) {
+    // The plugin has released the Surface3D object so don't issue the
+    // callback.
+    return;
+  }
+
+  // Be careful to make the callback NULL again before issuing the callback
+  // since the plugin might want to flush from within the callback.
+  PP_CompletionCallback callback = object->current_flush_callback();
+  object->set_current_flush_callback(PP_BlockUntilComplete());
+  PP_RunCompletionCallback(&callback, pp_error);
+}
+
+void PPB_Surface3D_Proxy::SendSwapBuffersACKToPlugin(
+    int32_t result,
+    const HostResource& surface_3d) {
+  dispatcher()->Send(new PpapiMsg_PPBSurface3D_SwapBuffersACK(
+      INTERFACE_ID_PPB_SURFACE_3D, surface_3d, result));
+}
+
+}  // namespace proxy
+}  // namespace pp