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https://github.com/PCSX2/pcsx2.git
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ab9bdb009b
Update it to the version found at https://github.com/Microsoft/Windows-classic-samples , which is in an MIT licensed repo, and add the LICENSE file (edited to remove the SIL Open Font LICENSE part since that doesn't apply). Some modifications have been made to reduce the diff/stop git complaining (not including any file that wasn't in the previous version and removing the related header includes in streams.h, and fixing some but not all of the whitespace issues).
116 lines
2.7 KiB
C++
116 lines
2.7 KiB
C++
//------------------------------------------------------------------------------
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// File: RefTime.h
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//
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// Desc: DirectShow base classes - defines CRefTime, a class that manages
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// reference times.
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//
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// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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//
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// CRefTime
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//
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// Manage reference times.
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// Shares same data layout as REFERENCE_TIME, but adds some (nonvirtual)
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// functions providing simple comparison, conversion and arithmetic.
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//
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// A reference time (at the moment) is a unit of seconds represented in
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// 100ns units as is used in the Win32 FILETIME structure. BUT the time
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// a REFERENCE_TIME represents is NOT the time elapsed since 1/1/1601 it
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// will either be stream time or reference time depending upon context
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//
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// This class provides simple arithmetic operations on reference times
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//
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// keep non-virtual otherwise the data layout will not be the same as
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// REFERENCE_TIME
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// -----
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// note that you are safe to cast a CRefTime* to a REFERENCE_TIME*, but
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// you will need to do so explicitly
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// -----
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#ifndef __REFTIME__
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#define __REFTIME__
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const LONGLONG MILLISECONDS = (1000); // 10 ^ 3
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const LONGLONG NANOSECONDS = (1000000000); // 10 ^ 9
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const LONGLONG UNITS = (NANOSECONDS / 100); // 10 ^ 7
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/* Unfortunately an inline function here generates a call to __allmul
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- even for constants!
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*/
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#define MILLISECONDS_TO_100NS_UNITS(lMs) \
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Int32x32To64((lMs), (UNITS / MILLISECONDS))
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class CRefTime
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{
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public:
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// *MUST* be the only data member so that this class is exactly
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// equivalent to a REFERENCE_TIME.
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// Also, must be *no virtual functions*
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REFERENCE_TIME m_time;
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inline CRefTime()
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{
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// default to 0 time
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m_time = 0;
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};
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inline CRefTime(LONG msecs)
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{
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m_time = MILLISECONDS_TO_100NS_UNITS(msecs);
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};
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inline CRefTime(REFERENCE_TIME rt)
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{
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m_time = rt;
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};
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inline operator REFERENCE_TIME() const
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{
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return m_time;
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};
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inline CRefTime& operator=(const CRefTime& rt)
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{
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m_time = rt.m_time;
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return *this;
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};
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inline CRefTime& operator=(const LONGLONG ll)
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{
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m_time = ll;
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return *this;
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};
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inline CRefTime& operator+=(const CRefTime& rt)
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{
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return (*this = *this + rt);
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};
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inline CRefTime& operator-=(const CRefTime& rt)
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{
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return (*this = *this - rt);
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};
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inline LONG Millisecs(void)
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{
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return (LONG)(m_time / (UNITS / MILLISECONDS));
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};
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inline LONGLONG GetUnits(void)
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{
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return m_time;
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};
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};
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const LONGLONG TimeZero = 0;
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#endif /* __REFTIME__ */
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