| // Copyright 2020 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_METRICS_DROPPED_FRAME_COUNTER_H_ |
| #define CC_METRICS_DROPPED_FRAME_COUNTER_H_ |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| |
| #include "base/containers/ring_buffer.h" |
| #include "cc/cc_export.h" |
| |
| namespace cc { |
| |
| class TotalFrameCounter; |
| struct UkmSmoothnessDataShared; |
| |
| // This class maintains a counter for produced/dropped frames, and can be used |
| // to estimate the recent throughput. |
| class CC_EXPORT DroppedFrameCounter { |
| public: |
| enum FrameState { |
| kFrameStateDropped, |
| kFrameStatePartial, |
| kFrameStateComplete |
| }; |
| |
| DroppedFrameCounter(); |
| |
| DroppedFrameCounter(const DroppedFrameCounter&) = delete; |
| DroppedFrameCounter& operator=(const DroppedFrameCounter&) = delete; |
| |
| size_t frame_history_size() const { return ring_buffer_.BufferSize(); } |
| size_t total_frames() const { return total_frames_; } |
| size_t total_compositor_dropped() const { return total_dropped_; } |
| size_t total_main_dropped() const { return total_partial_; } |
| size_t total_smoothness_dropped() const { return total_smoothness_dropped_; } |
| |
| uint32_t GetAverageThroughput() const; |
| |
| typedef base::RingBuffer<FrameState, 180> RingBufferType; |
| RingBufferType::Iterator begin() const { return ring_buffer_.Begin(); } |
| RingBufferType::Iterator end() const { return ring_buffer_.End(); } |
| |
| void AddGoodFrame(); |
| void AddPartialFrame(); |
| void AddDroppedFrame(); |
| |
| void AddDroppedFrameAffectingSmoothness(); |
| void ReportFrames(); |
| |
| void SetUkmSmoothnessDestination(UkmSmoothnessDataShared* smoothness_data); |
| |
| void Reset(); |
| void OnFcpReceived(); |
| |
| void set_total_counter(TotalFrameCounter* total_counter) { |
| total_counter_ = total_counter; |
| } |
| |
| private: |
| RingBufferType ring_buffer_; |
| size_t total_frames_ = 0; |
| size_t total_partial_ = 0; |
| size_t total_dropped_ = 0; |
| size_t total_smoothness_dropped_ = 0; |
| bool fcp_received_ = false; |
| |
| UkmSmoothnessDataShared* ukm_smoothness_data_ = nullptr; |
| |
| TotalFrameCounter* total_counter_ = nullptr; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_METRICS_DROPPED_FRAME_COUNTER_H_ |