36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
#pragma once
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#include "VideoIOTypes.h"
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#include "VideoPlayoutPolicy.h"
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#include <cstdint>
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class VideoPlayoutScheduler
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{
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public:
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void Configure(int64_t frameDuration, int64_t timeScale);
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void Configure(int64_t frameDuration, int64_t timeScale, const VideoPlayoutPolicy& policy);
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void Reset();
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VideoIOScheduleTime NextScheduleTime();
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void AlignNextScheduleTimeToPlayback(int64_t streamTime, uint64_t leadFrames);
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VideoPlayoutRecoveryDecision AccountForCompletionResult(VideoIOCompletionResult result, uint64_t readyQueueDepth = 0);
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double FrameBudgetMilliseconds() const;
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uint64_t ScheduledFrameIndex() const { return mScheduledFrameIndex; }
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uint64_t CompletedFrameIndex() const { return mCompletedFrameIndex; }
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uint64_t LateStreak() const { return mLateStreak; }
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uint64_t DropStreak() const { return mDropStreak; }
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int64_t TimeScale() const { return mTimeScale; }
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const VideoPlayoutPolicy& Policy() const { return mPolicy; }
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private:
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uint64_t MeasureLag(VideoIOCompletionResult result, uint64_t readyQueueDepth) const;
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int64_t mFrameDuration = 0;
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int64_t mTimeScale = 0;
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uint64_t mScheduledFrameIndex = 0;
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uint64_t mCompletedFrameIndex = 0;
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uint64_t mLateStreak = 0;
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uint64_t mDropStreak = 0;
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VideoPlayoutPolicy mPolicy;
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};
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