2 Copyright (c) 2005, John Hurst
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27 /*! \file Timecode.cpp
29 \brief Miscellaneous timecode functions
34 // constants for 30fps drop-frame timecode
35 const ui32_t DF_FRM_IN_1 = 1798UL; // number of frames in 1 min of DF code
36 const ui32_t DF_FRM_IN_10 = 17982UL; // number of frames in 10 mins of DF code
37 const ui32_t DF_FRM_HOUR = 107892UL; // number of frames in 1 hour of DF code
40 // convert hh:mm:ss:ff at fps to frame count
42 ASDCP::tc_to_frames(ui16_t fps, ui16_t hh, ui16_t mm, ui16_t ss, ui16_t ff, bool df)
48 DefaultLogSink().Error("Drop Frame Timecode is not supported at %hu fps\n", fps);
52 return ( (hh * DF_FRM_HOUR)
53 + ((mm / 10) * DF_FRM_IN_10)
54 + ((mm % 10) * DF_FRM_IN_1)
60 return ((((((hh * 60UL) + mm) * 60UL) + ss ) * fps ) + ff);