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mojo/services/gles2/command_buffer_driver.h

+// Copyright 2013 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 SERVICES_GLES2_COMMAND_BUFFER_DRIVER_H_
+#define SERVICES_GLES2_COMMAND_BUFFER_DRIVER_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/single_thread_task_runner.h"
+#include "base/timer/timer.h"
+#include "third_party/mojo_services/src/gpu/public/interfaces/command_buffer.mojom.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace gpu {
+class CommandBufferService;
+class GpuScheduler;
+class GpuControlService;
+class SyncPointManager;
+namespace gles2 {
+class GLES2Decoder;
+class MailboxManager;
+}
+}
+
+namespace gfx {
+class GLContext;
+class GLShareGroup;
+class GLSurface;
+}
+
+namespace gles2 {
+
+class CommandBufferDriver {
+ public:
+  class Client {
+   public:
+    virtual ~Client();
+    virtual void UpdateVSyncParameters(base::TimeTicks timebase,
+                                       base::TimeDelta interval) = 0;
+    virtual void DidLoseContext() = 0;
+  };
+  // Offscreen.
+  CommandBufferDriver(gfx::GLShareGroup* share_group,
+                      gpu::gles2::MailboxManager* mailbox_manager,
+                      gpu::SyncPointManager* sync_point_manager);
+  // Onscreen.
+  CommandBufferDriver(gfx::AcceleratedWidget widget,
+                      gfx::GLShareGroup* share_group,
+                      gpu::gles2::MailboxManager* mailbox_manager,
+                      gpu::SyncPointManager* sync_point_manager);
+  ~CommandBufferDriver();
+
+  void set_client(scoped_ptr<Client> client) { client_ = client.Pass(); }
+
+  void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
+                  mojo::CommandBufferLostContextObserverPtr loss_observer,
+                  mojo::ScopedSharedBufferHandle shared_state);
+  void SetGetBuffer(int32_t buffer);
+  void Flush(int32_t put_offset);
+  void MakeProgress(int32_t last_get_offset);
+  void RegisterTransferBuffer(int32_t id,
+                              mojo::ScopedSharedBufferHandle transfer_buffer,
+                              uint32_t size);
+  void DestroyTransferBuffer(int32_t id);
+  void Echo(const mojo::Callback<void()>& callback);
+
+ private:
+  bool DoInitialize(mojo::ScopedSharedBufferHandle shared_state);
+  void OnResize(gfx::Size size, float scale_factor);
+  bool OnWaitSyncPoint(uint32_t sync_point);
+  void OnSyncPointRetired();
+  void OnParseError();
+  void OnContextLost(uint32_t reason);
+  void OnUpdateVSyncParameters(const base::TimeTicks timebase,
+                               const base::TimeDelta interval);
+
+  scoped_ptr<Client> client_;
+  mojo::CommandBufferSyncClientPtr sync_client_;
+  mojo::CommandBufferLostContextObserverPtr loss_observer_;
+  gfx::AcceleratedWidget widget_;
+  scoped_ptr<gpu::CommandBufferService> command_buffer_;
+  scoped_ptr<gpu::gles2::GLES2Decoder> decoder_;
+  scoped_ptr<gpu::GpuScheduler> scheduler_;
+  scoped_refptr<gfx::GLContext> context_;
+  scoped_refptr<gfx::GLSurface> surface_;
+  scoped_refptr<gfx::GLShareGroup> share_group_;
+  scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
+  scoped_refptr<gpu::SyncPointManager> sync_point_manager_;
+
+  scoped_refptr<base::SingleThreadTaskRunner> context_lost_task_runner_;
+  base::Callback<void(int32_t)> context_lost_callback_;
+
+  base::WeakPtrFactory<CommandBufferDriver> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CommandBufferDriver);
+};
+
+}  // namespace gles2
+
+#endif  // SERVICES_GLES2_COMMAND_BUFFER_DRIVER_H_