1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_ 6 #define UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_ 7 8 #include "ipc/ipc_listener.h" 9 #include "ipc/ipc_sender.h" 10 #include "ui/ozone/ozone_base_export.h" 11 12 namespace ui { 13 14 // Platform-specific object to support a GPU process host. 15 // 16 // ChromeOS on bare hardware will do display configuration and cursor 17 // movement from the GPU process. This provides a conduit for the 18 // messages needed to make this work. 19 // 20 // Under X11, we don't need any GPU messages for display configuration. 21 // That's why there's no real functionality here: it's purely mechanism 22 // to support additional messages needed by specific platforms. 23 class OZONE_BASE_EXPORT GpuPlatformSupportHost : public IPC::Listener { 24 public: 25 GpuPlatformSupportHost(); 26 virtual ~GpuPlatformSupportHost(); 27 28 // Called when the GPU process is spun up & channel established. 29 virtual void OnChannelEstablished(int host_id, IPC::Sender* sender) = 0; 30 31 // Called when the GPU process is destroyed. 32 virtual void OnChannelDestroyed(int host_id) = 0; 33 }; 34 35 // create a stub implementation. 36 OZONE_BASE_EXPORT GpuPlatformSupportHost* CreateStubGpuPlatformSupportHost(); 37 38 } // namespace ui 39 40 #endif // UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_ 41