Implement host side of sync EnumerateVideoCaptureDevices

content/renderer/pepper/pepper_flash_host.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 "content/renderer/pepper/pepper_flash_host.h"
+
+#include <vector>
+
+#include "content/public/renderer/renderer_ppapi_host.h"
+#include "ipc/ipc_message_macros.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/host/dispatch_host_message.h"
+#include "ppapi/host/ppapi_host.h"
+#include "ppapi/proxy/enter_proxy.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/proxy/resource_message_params.h"
+#include "ppapi/thunk/ppb_video_capture_api.h"
+
+using ppapi::proxy::EnterHostFromHostResource;
+using ppapi::proxy::EnterHostFromHostResourceForceCallback;
+using ppapi::thunk::PPB_VideoCapture_API;
+
+namespace content {
+
+PepperFlashHost::PepperFlashHost(
+    RendererPpapiHost* host,
+    PP_Instance instance,
+    PP_Resource resource)
+    : ResourceHost(host->GetPpapiHost(), instance, resource),
+      callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+}
+
+PepperFlashHost::~PepperFlashHost() {
+}
+
+int32_t PepperFlashHost::OnResourceMessageReceived(
+    const IPC::Message& msg,
+    ppapi::host::HostMessageContext* context) {
+  IPC_BEGIN_MESSAGE_MAP(PepperFlashHost, msg)
+    PPAPI_DISPATCH_HOST_RESOURCE_CALL(
+        PpapiHostMsg_Flash_EnumerateVideoDevicesSync,
+        OnMsgEnumerateVideoDevicesSync)
+  IPC_END_MESSAGE_MAP()
+  return PP_ERROR_FAILED;
+}
+
+int32_t PepperFlashHost::OnMsgEnumerateVideoDevicesSync(
+    ppapi::host::HostMessageContext* host_context,
+    const ppapi::HostResource& host_resource) {
+  EnterHostFromHostResourceForceCallback<PPB_VideoCapture_API> enter(
+      host_resource, callback_factory_,
+      &PepperFlashHost::OnEnumerateVideoDevicesComplete,
+      host_context->MakeReplyMessageContext(),
+      host_resource);
+  if (enter.succeeded()) {
+    // We don't want the output to go into a PP_ResourceArray (which is
+    // deprecated), so just pass in NULL. We'll grab the DeviceRefData vector
+    // in the callback and convert it to a PP_ArrayOutput in the plugin.
+    enter.SetResult(enter.object()->EnumerateDevices(NULL, enter.callback()));
+  }
+  return PP_OK_COMPLETIONPENDING;
+}
+
+void PepperFlashHost::OnEnumerateVideoDevicesComplete(
+      int32_t result,
+      ppapi::host::ReplyMessageContext reply_message_context,

[yzshen1, 2012/10/10 18:17:39]

wrong indent.

[raymes, 2012/10/11 18:39:26]

Done.

+      const ppapi::HostResource& host_resource) {
+  std::vector<ppapi::DeviceRefData> devices;
+  if (result == PP_OK) {
+    EnterHostFromHostResource<PPB_VideoCapture_API> enter(host_resource);
+    if (enter.succeeded())
+      devices = enter.object()->GetDeviceRefData();

[yzshen1, 2012/10/10 18:17:39]

nit, optional: it seems nice to avoid this copy.

[raymes, 2012/10/11 18:39:26]

Done.

+    else
+      result = PP_ERROR_FAILED;
+  }
+  reply_message_context.params.set_result(result);
+  host()->SendReply(reply_message_context,
+      PpapiPluginMsg_Flash_EnumerateVideoDevicesSyncReply(devices));
+}
+
+}  // namespace content
+