Index: gpu/ipc/service/gpu_vsync_provider_win.h |
diff --git a/gpu/ipc/service/gpu_vsync_provider_win.h b/gpu/ipc/service/gpu_vsync_provider_win.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b375e04ad789d791fa7be3daa79e6679b1346e53 |
--- /dev/null |
+++ b/gpu/ipc/service/gpu_vsync_provider_win.h |
@@ -0,0 +1,81 @@ |
+// Copyright (c) 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 GPU_IPC_SERVICE_GPU_VSYNC_PROVIDER_WIN_H_ |
+#define GPU_IPC_SERVICE_GPU_VSYNC_PROVIDER_WIN_H_ |
+ |
+#include <memory> |
+ |
+#include "base/callback.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/weak_ptr.h" |
+#include "base/synchronization/lock.h" |
+#include "base/time/time.h" |
+#include "gpu/gpu_export.h" |
+#include "gpu/ipc/common/surface_handle.h" |
+#include "gpu/ipc/service/image_transport_surface_delegate.h" |
+#include "ui/gfx/vsync_provider.h" |
+ |
+namespace gl { |
+class VSyncProviderWin; |
+} // namespace gl |
+ |
+namespace gpu { |
+ |
+class GpuVSyncWorker; |
+class GpuVSyncMessageFilter; |
+ |
+using VSyncCallback = base::Callback<void(base::TimeTicks timestamp)>; |
+ |
+// TODO: this should be WIN only |
stanisc
2017/02/02 22:01:23
Forgot to remove this comment. Will remove it late
|
+class GPU_EXPORT GpuVSyncProviderWin : public gfx::VSyncProvider { |
+ public: |
+ GpuVSyncProviderWin(base::WeakPtr<ImageTransportSurfaceDelegate> delegate, |
+ SurfaceHandle surface_handle); |
+ ~GpuVSyncProviderWin(); |
+ |
+ // This class ignores this method and updates VSync directly via a |
+ // worker thread IPC call. |
+ void GetVSyncParameters(const UpdateVSyncCallback& callback) override; |
+ |
+ private: |
+ void OnVSync(base::TimeTicks timestamp); |
+ void OnVSyncParametersUpdated(base::TimeTicks timestamp, |
+ base::TimeDelta interval); |
+ |
+ // VSync worker that waits for VSync events on worker thread. |
+ scoped_refptr<GpuVSyncWorker> vsync_worker_; |
+ // Message filter to send/receive IPC messages. |
+ scoped_refptr<GpuVSyncMessageFilter> message_filter_; |
+ |
+ // vsync_interval_ comes from the nested VSyncProvider called on the main |
+ // thread. |
+ // TODO(stanisc): Consider either merging VSyncProviderWin with this class or |
+ // calculating vsync interval from consecutive VSync timestamps. |
+ std::unique_ptr<gl::VSyncProviderWin> vsync_interval_provider_; |
+ base::TimeDelta vsync_interval_; |
+ base::Lock vsync_interval_lock_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(GpuVSyncProviderWin); |
+}; |
+ |
+// Implements waiting for VSync signal on background thread. |
+class GPU_EXPORT GpuVSyncProviderForTest { |
+ public: |
+ GpuVSyncProviderForTest(const VSyncCallback& callback, |
+ SurfaceHandle surface_handle); |
+ ~GpuVSyncProviderForTest(); |
+ |
+ // Start or stop VSync production. |
+ void SetNeedsVSync(bool needs_vsync); |
+ |
+ private: |
+ scoped_refptr<GpuVSyncWorker> vsync_worker_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(GpuVSyncProviderForTest); |
+}; |
+ |
+} // namespace gpu |
+ |
+#endif // GPU_IPC_SERVICE_GPU_VSYNC_PROVIDER_WIN_H_ |