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27 lines
958 B
C++
27 lines
958 B
C++
/*
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* @Author: DI JUNKUN
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* @Date: 2026-10-02
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* Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
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*/
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#ifndef _VIDEO_TIMING_H_
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#define _VIDEO_TIMING_H_
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#include <cstdint>
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namespace crossdesk::android_controller {
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inline double VideoLatencyMilliseconds(uint64_t captured_us,
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uint64_t received_us,
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int64_t submitted_us) {
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// MiniRTC calibrates capture time when the frame is reassembled. Validate
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// that mapping at reception, not after decoding/Surface waits: a real local
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// backlog over five seconds must remain visible in the latency measurement.
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if (!captured_us || received_us < captured_us || submitted_us <= 0 ||
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received_us > static_cast<uint64_t>(submitted_us) ||
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received_us - captured_us > 5'000'000)
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return -1;
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return (static_cast<uint64_t>(submitted_us) - captured_us) / 1000.0;
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}
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} // namespace crossdesk::android_controller
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#endif |