Implement PPB_DeviceRef_Dev.

This is part of the work to suppport enumeration of multiple audio/video capture devices.

Relevant changes:
The thread that discussed interface design - http://codereview.chromium.org/8981009/
PPB_ResourceArray_Dev (committed) - http://codereview.chromium.org/9111008/

BUG=None
TEST=None


Review URL: http://codereview.chromium.org/9192019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@118611 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 46 insertions, 0 deletions

diff --git a/ppapi/thunk/ppb_device_ref_thunk.cc b/ppapi/thunk/ppb_device_ref_thunk.cc
new file mode 100644
index 0000000..7424ca4
--- /dev/null
+++ b/ppapi/thunk/ppb_device_ref_thunk.cc
@@ -0,0 +1,46 @@
+// 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/thunk/enter.h"
+#include "ppapi/thunk/ppb_device_ref_api.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+PP_Bool IsDeviceRef(PP_Resource resource) {
+  EnterResource<PPB_DeviceRef_API> enter(resource, false);
+  return enter.succeeded() ? PP_TRUE : PP_FALSE;
+}
+
+PP_DeviceType_Dev GetType(PP_Resource device_ref) {
+  EnterResource<PPB_DeviceRef_API> enter(device_ref, true);
+  if (enter.failed())
+    return PP_DEVICETYPE_DEV_INVALID;
+  return enter.object()->GetType();
+}
+
+PP_Var GetName(PP_Resource device_ref) {
+  EnterResource<PPB_DeviceRef_API> enter(device_ref, true);
+  if (enter.failed())
+    return PP_MakeUndefined();
+  return enter.object()->GetName();
+}
+
+const PPB_DeviceRef_Dev g_ppb_device_ref_thunk = {
+  &IsDeviceRef,
+  &GetType,
+  &GetName
+};
+
+}  // namespace
+
+const PPB_DeviceRef_Dev_0_1* GetPPB_DeviceRef_Dev_0_1_Thunk() {
+  return &g_ppb_device_ref_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi