Implement TransferableResource StructTraits

cc/ipc/transferable_resource_struct_traits.h

+// Copyright 2016 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.
+
+#ifndef CC_IPC_TRANSFERABLE_RESOURCE_STRUCT_TRAITS_H_
+#define CC_IPC_TRANSFERABLE_RESOURCE_STRUCT_TRAITS_H_
+
+#include "cc/ipc/transferable_resource.mojom.h"
+#include "cc/resources/transferable_resource.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<cc::mojom::TransferableResource, cc::TransferableResource> {
+  static uint32_t id(const cc::TransferableResource& resource) {
+    return resource.id;
+  }
+
+  static cc::mojom::ResourceFormat format(
+      const cc::TransferableResource& resource) {
+    return static_cast<cc::mojom::ResourceFormat>(resource.format);
+  }
+
+  static uint32_t filter(const cc::TransferableResource& resource) {
+    return resource.filter;
+  }
+
+  static gfx::Size size(const cc::TransferableResource& resource) {
+    return resource.size;
+  }
+
+  static gpu::MailboxHolder mailbox_holder(
+      const cc::TransferableResource& resource) {
+    return resource.mailbox_holder;
+  }
+
+  static bool read_lock_fences_enabled(
+      const cc::TransferableResource& resource) {
+    return resource.read_lock_fences_enabled;
+  }
+
+  static bool is_software(const cc::TransferableResource& resource) {
+    return resource.is_software;
+  }
+
+  static int32_t gpu_memory_buffer_id(
+      const cc::TransferableResource& resource) {
+    return resource.gpu_memory_buffer_id.id;
+  }
+
+  static bool is_overlay_candidate(const cc::TransferableResource& resource) {
+    return resource.is_overlay_candidate;
+  }
+
+  static bool Read(cc::mojom::TransferableResourceDataView data,
+                   cc::TransferableResource* out) {
+    gfx::Size size;
+    gpu::MailboxHolder holder;
+    if (!data.ReadSize(&size) || !data.ReadMailboxHolder(&holder))
+      return false;
+    out->id = data.id();
+    out->format = static_cast<cc::ResourceFormat>(data.format());
+    out->filter = data.filter();
+    out->size = size;
+    out->mailbox_holder = holder;
+    out->read_lock_fences_enabled = data.read_lock_fences_enabled();
+    out->is_software = data.is_software();
+    out->gpu_memory_buffer_id.id = data.gpu_memory_buffer_id();
+    out->is_overlay_candidate = data.is_overlay_candidate();
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // CC_IPC_TRANSFERABLE_RESOURCE_STRUCT_TRAITS_H_