Sample code: IPC Transport object for GPU

content/gpu/gpu_memory_buffer_service.cc

+// Copyright 2015 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/gpu/gpu_memory_buffer_service.h"
+
+#include "content/common/gpu/create_gpu_memory_buffer_from_handle_params.h"
+#include "content/common/gpu/create_gpu_memory_buffer_params.h"
+#include "content/common/gpu/gpu_memory_buffer_factory.h"
+#include "content/gpu/chrome_gpu_memory_buffer_service_ipc_transport.h"
+
+namespace content {
+
+GpuMemoryBufferService::GpuMemoryBufferService(
+    GpuMemoryBufferFactory* gpu_memory_buffer_factory)
+    : gpu_memory_buffer_factory_(gpu_memory_buffer_factory) {
+  transport_ = ChromeGpuMemoryBufferServiceIPCTransport::Create();
+  transport_->SetClient(this);
+}
+
+GpuMemoryBufferService::~GpuMemoryBufferService() {}
+
+void GpuMemoryBufferService::OnConnectionClosed() {
+  delete this;
+}
+
+void GpuMemoryBufferService::OnCreateGpuMemoryBuffer(
+    const CreateGpuMemoryBufferParams& params) {
+  TRACE_EVENT2("gpu", "GpuMemoryBufferService::OnCreateGpuMemoryBuffer", "id",
+               params.id.id, "client_id", params.client_id);
+
+  DCHECK(gpu_memory_buffer_factory_);
+  transport_->GpuMemoryBufferCreated(
+      gpu_memory_buffer_factory_->CreateGpuMemoryBuffer(
+          params.id, params.size, params.format, params.usage, params.client_id,
+          params.surface_handle));
+}
+
+void GpuMemoryBufferService::OnCreateGpuMemoryBufferFromHandle(
+    const CreateGpuMemoryBufferFromHandleParams& params) {
+  TRACE_EVENT2("gpu",
+               "GpuMemoryBufferService::OnCreateGpuMemoryBufferFromHandle",
+               "id", params.id.id, "client_id", params.client_id);
+  transport_->GpuMemoryBufferCreated(
+      gpu_memory_buffer_factory_->CreateGpuMemoryBufferFromHandle(
+          params.handle, params.id, params.size, params.format,
+          params.client_id));
+}
+
+}  // namespace content