Index: cc/surfaces/primary_begin_frame_source.h |
diff --git a/cc/surfaces/primary_begin_frame_source.h b/cc/surfaces/primary_begin_frame_source.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..555cf158ba67bd7ce4a1994b654df794eb34b2cc |
--- /dev/null |
+++ b/cc/surfaces/primary_begin_frame_source.h |
@@ -0,0 +1,62 @@ |
+// Copyright 2017 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 CC_SURFACES_PRIMARY_BEGIN_FRAME_SOURCE_H_ |
+#define CC_SURFACES_PRIMARY_BEGIN_FRAME_SOURCE_H_ |
+ |
+#include "cc/scheduler/begin_frame_source.h" |
+#include "cc/surfaces/frame_sink_observer.h" |
+ |
+namespace cc { |
+ |
+class FrameSinkManager; |
+ |
+// PrimaryBeginFrameSource echos the first BeginFrameSource in the system. |
+// If the first source goes away then it will echo the new first |
+// BeginFrameSource. |
+class PrimaryBeginFrameSource : public BeginFrameSource, |
+ public BeginFrameObserver, |
+ public ExternalBeginFrameSourceClient, |
+ public FrameSinkObserver { |
+ public: |
+ PrimaryBeginFrameSource(); |
+ ~PrimaryBeginFrameSource() override; |
+ |
+ void Init(FrameSinkManager* frame_sink_manager); |
+ |
+ // BeginFrameObserver implementation. |
+ void OnBeginFrame(const BeginFrameArgs& args) override; |
+ const BeginFrameArgs& LastUsedBeginFrameArgs() const override; |
+ void OnBeginFrameSourcePausedChanged(bool paused) override; |
+ |
+ // BeginFrameSource implementation. |
+ void DidFinishFrame(BeginFrameObserver* obs, |
+ const BeginFrameAck& ack) override; |
+ void AddObserver(BeginFrameObserver* obs) override; |
+ void RemoveObserver(BeginFrameObserver* obs) override; |
+ bool IsThrottled() const override; |
+ |
+ // ExternalBeginFrameSourceClient implementation. |
+ void OnNeedsBeginFrames(bool needs_begin_frames) override; |
+ |
+ // FrameSinkObserver implementation. |
+ void OnBeginFrameSourceAdded(BeginFrameSource* begin_frame_source) override; |
enne (OOO)
2017/05/24 17:55:17
This is a tiny design nit in this class, but I fee
Fady Samuel
2017/05/24 18:36:51
Done.
|
+ void OnBeginFrameSourceRemoved(BeginFrameSource* begin_frame_source) override; |
+ |
+ private: |
+ FrameSinkManager* frame_sink_manager_ = nullptr; |
+ std::unique_ptr<ExternalBeginFrameSource> begin_frame_source_; |
enne (OOO)
2017/05/24 17:55:17
Maybe just make this a member instead of a heap al
Fady Samuel
2017/05/24 18:36:51
Done.
|
+ BeginFrameSource* primary_begin_frame_source_ = nullptr; |
enne (OOO)
2017/05/24 17:55:17
There's a lot of "primary" verbage everywhere. Ma
Fady Samuel
2017/05/24 18:36:52
Done.
|
+ |
+ // The last begin frame args generated by the begin frame source. |
+ BeginFrameArgs last_begin_frame_args_; |
+ |
+ bool needs_begin_frames_ = false; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PrimaryBeginFrameSource); |
+}; |
+ |
+} // namespace cc |
+ |
+#endif // CC_SURFACES_PRIMARY_BEGIN_FRAME_SOURCE_H_ |