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https://github.com/ZLMediaKit/ZLMediaKit.git
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防止时间戳回滚
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@@ -33,18 +33,33 @@ using namespace toolkit;
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namespace mediakit {
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//该类解决时间戳回环、回退问题
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//计算相对时间戳或者产生平滑时间戳
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class Stamp {
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class DeltaStamp{
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public:
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Stamp() = default;
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~Stamp() = default;
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DeltaStamp() = default;
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~DeltaStamp() = default;
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/**
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* 设置回放模式,回放模式时间戳可以回退
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* 计算时间戳增量
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* @param stamp 绝对时间戳
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* @return 时间戳增量
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*/
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int64_t deltaStamp(int64_t stamp);
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/**
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* 设置是否为回放模式,回放模式运行时间戳回退
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* @param playback 是否为回放模式
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*/
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void setPlayBack(bool playback = true);
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private:
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int64_t _last_stamp = 0;
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bool _playback = false;
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};
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//该类解决时间戳回环、回退问题
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//计算相对时间戳或者产生平滑时间戳
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class Stamp : public DeltaStamp{
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public:
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Stamp() = default;
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~Stamp() = default;
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/**
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* 修正时间戳
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@@ -53,12 +68,21 @@ public:
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* @param dts_out 输出dts
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* @param pts_out 输出pts
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*/
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void revise(uint32_t dts, uint32_t pts, int64_t &dts_out, int64_t &pts_out);
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void revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out);
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/**
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* 再设置相对时间戳,用于seek用
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* @param relativeStamp 相对时间戳
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*/
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void setRelativeStamp(int64_t relativeStamp);
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/**
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* 获取当前相对时间戳
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* @return
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*/
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int64_t getRelativeStamp() const ;
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private:
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bool _playback = false;
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int64_t _start_dts = 0;
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int64_t _dts_inc = 0;
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bool _first = true;
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int64_t _relativeStamp = 0;
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SmoothTicker _ticker;
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};
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