mk_player api 增加seek和获取进度以相对开始时间的接口以适应按时间轴方式回放的需求

src/Common/Stamp.cpp

@@ -52,7 +52,10 @@ void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out,
         //这是点播
         dts_out = dts;
         pts_out = pts;
-        _relativeStamp = dts_out;
+        _last_dts = dts;
+        if (_dts_base == -1)
+            _dts_base = dts;
+        _relativeStamp = _npt_base + dts - _dts_base;
         return;
     }
 
@@ -84,6 +87,8 @@ void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out,
 }
 
 void Stamp::setRelativeStamp(int64_t relativeStamp) {
+    _dts_base = _last_dts;
+    _npt_base = relativeStamp;
     _relativeStamp = relativeStamp;
 }
 

src/Common/Stamp.h

@@ -71,6 +71,9 @@ private:
     int64_t _last_dts = -1;
     SmoothTicker _ticker;
     bool _playback = false;
+
+    int64_t _dts_base = 0;
+    int64_t _npt_base = 0;
 };
 
 

src/Player/PlayerBase.h

@@ -93,12 +93,24 @@ public:
      */
     virtual float getProgress() const { return 0;}
 
+    /**
+     * 获取播放进度pos，取值 相对开始时间增量 单位秒
+     * @return
+     */
+    virtual uint32_t getProgressPos() const { return 0; }
+
     /**
      * 拖动进度条
      * @param fProgress 进度，取值 0.0 ~ 1.0
      */
     virtual void seekTo(float fProgress) {}
 
+    /**
+     * 拖动进度条
+     * @param seekPos 进度，取值 相对于开始时间的增量 单位秒
+     */
+    virtual void seekTo(uint32_t seekPos) {}
+
     /**
      * 设置一个MediaSource，直接生产rtsp/rtmp代理
      * @param src
@@ -174,6 +186,12 @@ public:
         }
         return Parent::getProgress();
     }
+    uint32_t getProgressPos() const override {
+        if (_delegate) {
+            return _delegate->getProgressPos();
+        }
+        return Parent::getProgressPos();
+    }
     void seekTo(float fProgress) override{
         if (_delegate) {
             return _delegate->seekTo(fProgress);
@@ -181,6 +199,13 @@ public:
         return Parent::seekTo(fProgress);
     }
 
+    void seekTo(uint32_t seekPos) override {
+        if (_delegate) {
+            return _delegate->seekTo(seekPos);
+        }
+        return Parent::seekTo(seekPos);
+    }
+
     void setMediaSouce(const MediaSource::Ptr & src) override {
         if (_delegate) {
             _delegate->setMediaSouce(src);