Impl mus::mojom::GpuService to enable using Chrome IPC version gpu CmdBuf in mus

components/mus/gpu/gpu_service_mus.cc

 // 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.
 
 #include "components/mus/gpu/gpu_service_mus.h"
 
+#include "base/memory/shared_memory.h"
+#include "base/memory/singleton.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "components/mus/gpu/gpu_memory_buffer_manager_mus_local.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
+#include "gpu/command_buffer/service/sync_point_manager.h"
+#include "gpu/config/gpu_info_collector.h"
+#include "gpu/config/gpu_switches.h"
+#include "gpu/config/gpu_util.h"
+#include "gpu/ipc/common/gpu_memory_buffer_support.h"
+#include "gpu/ipc/common/memory_stats.h"
 #include "gpu/ipc/common/surface_handle.h"
+#include "gpu/ipc/service/gpu_memory_buffer_factory.h"
+#include "ipc/ipc_channel_handle.h"
+#include "ipc/ipc_sync_message_filter.h"
+#include "media/gpu/ipc/service/gpu_jpeg_decode_accelerator.h"
+#include "media/gpu/ipc/service/gpu_video_decode_accelerator.h"
+#include "media/gpu/ipc/service/gpu_video_encode_accelerator.h"
+#include "media/gpu/ipc/service/media_service.h"
+#include "ui/gl/gl_implementation.h"
+#include "ui/gl/gl_switches.h"
+#include "ui/gl/gpu_switching_manager.h"
+#include "url/gurl.h"
 
 namespace mus {
+namespace {
 
-GpuServiceMus::GpuServiceMus() {}
-
-GpuServiceMus::~GpuServiceMus() {}
-
-void GpuServiceMus::EstablishGpuChannel(
-    bool prempts,
-    bool allow_view_command_buffers,
-    bool allow_real_time_streams,
-    const mojom::GpuService::EstablishGpuChannelCallback& callback) {
-  NOTIMPLEMENTED();
+const int kLocalGpuChannelClientId = 1;
+const uint64_t kLocalGpuChannelClientTracingId = 1;
 }
 
-void GpuServiceMus::CreateGpuMemoryBuffer(
-    mojom::GpuMemoryBufferIdPtr id,
-    mojo::SizePtr size,
-    mojom::BufferFormat format,
-    mojom::BufferUsage usage,
-    uint64_t surface_id,
-    const mojom::GpuService::CreateGpuMemoryBufferCallback& callback) {
-  NOTIMPLEMENTED();
+GpuServiceMus::GpuServiceMus()
+    : main_message_loop_(base::MessageLoop::current()),
+      shutdown_event_(true, false),
+      gpu_thread_("GpuThread"),
+      io_thread_("GpuIOThread"),
+      io_thread_local_("GpuIOThreadLocal") {
+  Initialize();
 }
 
-void GpuServiceMus::CreateGpuMemoryBufferFromHandle(
-    mojom::GpuMemoryBufferHandlePtr buffer_handle,
-    mojom::GpuMemoryBufferIdPtr id,
-    mojo::SizePtr size,
-    mojom::BufferFormat format,
-    const mojom::GpuService::CreateGpuMemoryBufferFromHandleCallback&
-        callback) {
-  NOTIMPLEMENTED();
+GpuServiceMus::~GpuServiceMus() {
+  // Signal this event before destroying the child process.  That way all
+  // background threads can cleanup.
+  // For example, in the renderer the RenderThread instances will be able to
+  // notice shutdown before the render process begins waiting for them to exit.
+  shutdown_event_.Signal();
+  io_thread_.Stop();
 }
 
-void GpuServiceMus::DestroyGpuMemoryBuffer(mojom::GpuMemoryBufferIdPtr id,
+IPC::ChannelHandle GpuServiceMus::EstablishGpuChannel(
+    int client_id,
+    uint64_t client_tracing_id,
+    bool preempts,
+    bool allow_view_command_buffers,
+    bool allow_real_time_streams) {
+  CHECK_GT(client_id, kLocalGpuChannelClientId);

[piman, 2016/05/24 22:46:54]

nit: DCHECK_GT

[Peng, 2016/05/25 19:42:55]

Done.

+
+  if (!gpu_channel_manager_)
+    return IPC::ChannelHandle();
+
+  IPC::ChannelHandle channel_handle;
+  bool manual_reset = true;
+  bool initially_signaled = false;
+  base::WaitableEvent event(manual_reset, initially_signaled);
+  gpu_thread_.task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&GpuServiceMus::EstablishGpuChannelOnGpuThread,
+                 base::Unretained(this), client_id, client_tracing_id, preempts,
+                 allow_view_command_buffers, allow_real_time_streams,
+                 &channel_handle, &event));
+  event.Wait();
+  return channel_handle;
+}
+
+gfx::GpuMemoryBufferHandle GpuServiceMus::CreateGpuMemoryBuffer(
+    gfx::GpuMemoryBufferId id,
+    const gfx::Size& size,
+    gfx::BufferFormat format,
+    gfx::BufferUsage usage,
+    int client_id,
+    int32_t surface_handle) {
+  return gpu_memory_buffer_factory_->CreateGpuMemoryBuffer(
+      id, size, format, usage, client_id,
+      static_cast<gpu::SurfaceHandle>(surface_handle));
+}
+
+gfx::GpuMemoryBufferHandle GpuServiceMus::CreateGpuMemoryBufferFromeHandle(
+    gfx::GpuMemoryBufferHandle buffer_handle,
+    gfx::GpuMemoryBufferId id,
+    const gfx::Size& size,
+    gfx::BufferFormat format,
+    int client_id) {
+  return gpu_memory_buffer_factory_->CreateGpuMemoryBufferFromHandle(
+      buffer_handle, id, size, format, client_id);
+}
+
+void GpuServiceMus::DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                                           int client_id,
                                            const gpu::SyncToken& sync_token) {
-  NOTIMPLEMENTED();
+  if (gpu_channel_manager_)
+    gpu_channel_manager_->DestroyGpuMemoryBuffer(id, client_id, sync_token);
 }
 
 void GpuServiceMus::DidCreateOffscreenContext(const GURL& active_url) {
   NOTIMPLEMENTED();
 }
 
 void GpuServiceMus::DidDestroyChannel(int client_id) {
+  media_service_->RemoveChannel(client_id);
   NOTIMPLEMENTED();
 }
 
 void GpuServiceMus::DidDestroyOffscreenContext(const GURL& active_url) {
   NOTIMPLEMENTED();
 }
 
 void GpuServiceMus::DidLoseContext(bool offscreen,
                                    gpu::error::ContextLostReason reason,
                                    const GURL& active_url) {
   NOTIMPLEMENTED();
 }
 
 void GpuServiceMus::GpuMemoryUmaStats(const gpu::GPUMemoryUmaStats& params) {
   NOTIMPLEMENTED();
 }
 
-void GpuServiceMus::StoreShaderToDisk(int32_t client_id,
+void GpuServiceMus::StoreShaderToDisk(int client_id,
                                       const std::string& key,
                                       const std::string& shader) {
   NOTIMPLEMENTED();
 }
 
 #if defined(OS_WIN)
 void GpuServiceMus::SendAcceleratedSurfaceCreatedChildWindow(
     gpu::SurfaceHandle parent_window,
     gpu::SurfaceHandle child_window) {
   NOTIMPLEMENTED();
 }
 #endif
 
 void GpuServiceMus::SetActiveURL(const GURL& url) {
   NOTIMPLEMENTED();
 }
 
+void GpuServiceMus::Initialize() {
+  base::Thread::Options thread_options(base::MessageLoop::TYPE_DEFAULT, 0);
+  thread_options.priority = base::ThreadPriority::NORMAL;
+  CHECK(gpu_thread_.StartWithOptions(thread_options));
+
+  thread_options = base::Thread::Options(base::MessageLoop::TYPE_IO, 0);
+  thread_options.priority = base::ThreadPriority::NORMAL;
+#if defined(OS_ANDROID)
+  // TODO(reveman): Remove this in favor of setting it explicitly for each type
+  // of process.
+  thread_options.priority = base::ThreadPriority::DISPLAY;
+#endif
+  CHECK(io_thread_.StartWithOptions(thread_options));
+  CHECK(io_thread_local_.StartWithOptions(thread_options));
+
+  IPC::ChannelHandle channel_handle;
+  bool manual_reset = true;
+  bool initially_signaled = false;
+  base::WaitableEvent event(manual_reset, initially_signaled);
+  gpu_thread_.task_runner()->PostTask(
+      FROM_HERE, base::Bind(&GpuServiceMus::InitializeOnGpuThread,
+                            base::Unretained(this), &channel_handle, &event));
+  event.Wait();
+
+  gpu_memory_buffer_manager_mus_local_.reset(new GpuMemoryBufferManagerMusLocal(
+      kLocalGpuChannelClientId, kLocalGpuChannelClientTracingId));
+  gpu_channel_local_ = gpu::GpuChannelHost::Create(
+      this, kLocalGpuChannelClientId, gpu_info_, channel_handle,
+      &shutdown_event_, gpu_memory_buffer_manager_mus_local_.get());
+}
+
+void GpuServiceMus::InitializeOnGpuThread(IPC::ChannelHandle* channel_handle,
+                                          base::WaitableEvent* event) {
+  gpu_info_.video_decode_accelerator_capabilities =
+      media::GpuVideoDecodeAccelerator::GetCapabilities(gpu_preferences_);
+  gpu_info_.video_encode_accelerator_supported_profiles =
+      media::GpuVideoEncodeAccelerator::GetSupportedProfiles(gpu_preferences_);
+  gpu_info_.jpeg_decode_accelerator_supported =
+      media::GpuJpegDecodeAccelerator::IsSupported();
+
+  if (gpu::GetNativeGpuMemoryBufferType() != gfx::EMPTY_BUFFER) {
+    gpu_memory_buffer_factory_ =
+        gpu::GpuMemoryBufferFactory::CreateNativeType();
+  }
+
+  if (!gfx::GLSurface::InitializeOneOff())
+    VLOG(1) << "gfx::GLSurface::InitializeOneOff failed";
+
+  DCHECK(!owned_sync_point_manager_);
+  owned_sync_point_manager_.reset(new gpu::SyncPointManager(false));

[Fady Samuel, 2016/05/25 17:06:47]

What's this false?

[Peng, 2016/05/25 19:42:55]

Done.

+
+  // Defer creation of the render thread. This is to prevent it from handling
+  // IPC messages before the sandbox has been enabled and all other necessary
+  // initialization has succeeded.
+  gpu::GpuWatchdog* watchdog = nullptr;

[Fady Samuel, 2016/05/25 17:06:47]

Add a TODO here please to implement a watchdog thread.

[Peng, 2016/05/25 19:42:55]

Done.

+  gpu_channel_manager_.reset(new gpu::GpuChannelManager(
+      gpu_preferences_, this, watchdog,
+      base::ThreadTaskRunnerHandle::Get().get(), io_thread_.task_runner().get(),
+      &shutdown_event_, owned_sync_point_manager_.get(),
+      gpu_memory_buffer_factory_.get()));
+
+  media_service_.reset(new media::MediaService(gpu_channel_manager_.get()));
+
+#if defined(USE_OZONE)
+  ui::OzonePlatform::GetInstance()
+      ->GetGpuPlatformSupport()
+      ->OnChannelEstablished(this);
+#endif
+  const bool preempts = true;
+  const bool allow_view_command_buffers = true;
+  const bool allow_real_time_streams = true;
+  EstablishGpuChannelOnGpuThread(
+      kLocalGpuChannelClientId, kLocalGpuChannelClientTracingId, preempts,
+      allow_view_command_buffers, allow_real_time_streams, channel_handle,
+      event);
+}
+
+void GpuServiceMus::EstablishGpuChannelOnGpuThread(
+    int client_id,
+    uint64_t client_tracing_id,
+    bool preempts,
+    bool allow_view_command_buffers,
+    bool allow_real_time_streams,
+    IPC::ChannelHandle* channel_handle,
+    base::WaitableEvent* event) {
+  if (gpu_channel_manager_) {
+    *channel_handle = gpu_channel_manager_->EstablishChannel(
+        client_id, client_tracing_id, preempts, allow_view_command_buffers,
+        allow_real_time_streams);
+    media_service_->AddChannel(client_id);
+  }
+  event->Signal();
+}
+
+bool GpuServiceMus::IsMainThread() {
+  return main_message_loop_ == base::MessageLoop::current();
+}
+
+scoped_refptr<base::SingleThreadTaskRunner>
+GpuServiceMus::GetIOThreadTaskRunner() {
+  return io_thread_local_.task_runner();
+}
+
+std::unique_ptr<base::SharedMemory> GpuServiceMus::AllocateSharedMemory(
+    size_t size) {
+  std::unique_ptr<base::SharedMemory> shm(new base::SharedMemory());
+  if (!shm->CreateAnonymous(size))
+    return std::unique_ptr<base::SharedMemory>();
+  return shm;
+}
+
+// static
+GpuServiceMus* GpuServiceMus::GetInstance() {
+  return base::Singleton<GpuServiceMus>::get();
+}
+
 }  // namespace mus