Implement plugin side of sync EnumerateVideoCaptureDevices

ppapi/proxy/flash_resource.cc

+// Copyright (c) 2012 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/flash_resource.h"
+
+#include "ipc/ipc_message.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/dispatch_reply_message.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/array_writer.h"
+#include "ppapi/thunk/enter.h"
+
+namespace ppapi {
+namespace proxy {
+
+FlashResource::FlashResource(Connection connection, PP_Instance instance)
+    : PluginResource(connection, instance) {
+  SendCreateToRenderer(PpapiHostMsg_Flash_Create());
+}
+
+FlashResource::~FlashResource() {
+}
+
+thunk::PPB_Flash_Functions_API* FlashResource::AsPPB_Flash_Functions_API() {
+  return this;
+}
+
+int32_t FlashResource::EnumerateVideoCaptureDevices(
+    PP_Instance instance,
+    PP_Resource video_capture,
+    const PP_ArrayOutput& devices) {
+  ArrayWriter output;
+  output.set_pp_array_output(devices);
+  if (!output.is_valid())
+    return PP_ERROR_BADARGUMENT;
+
+  thunk::EnterResource<thunk::PPB_VideoCapture_API> enter(video_capture, true);
+  if (enter.failed())
+    return PP_ERROR_NOINTERFACE;
+
+  IPC::Message reply;
+  std::vector<ppapi::DeviceRefData> device_ref_data;
+  int32_t result = CallRendererSync(
+      PpapiHostMsg_Flash_EnumerateVideoCaptureDevices(
+          enter.resource()->host_resource()), &reply);
+  if (result != PP_OK)
+    return result;
+  PpapiPluginMsg_Flash_EnumerateVideoCaptureDevicesReply::Schema::Param p;
+  if (!PpapiPluginMsg_Flash_EnumerateVideoCaptureDevicesReply::Read(&reply, &p))
+    return PP_ERROR_FAILED;
+  device_ref_data = p.a;
+
+  std::vector<scoped_refptr<Resource> > device_resources;
+  for (size_t i = 0; i < device_ref_data.size(); ++i) {
+    scoped_refptr<Resource> resource(new PPB_DeviceRef_Shared(
+        OBJECT_IS_PROXY, instance, device_ref_data[i]));
+    device_resources.push_back(resource);
+  }
+
+  if (!output.StoreResourceVector(device_resources))
+    return PP_ERROR_FAILED;
+
+  return PP_OK;
+}
+
+}  // namespace proxy
+}  // namespace ppapi