anonymous_namespace{GraphicsDataCache.cpp} Namespace Reference

Functions
bool	IsSameSample (double sampleRate, double t0, double t1) noexcept
bool	IsSamePPS (double sampleRate, double lhs, double rhs)
bool	IsSameKey (double sampleRate, GraphicsDataCacheKey lhs, GraphicsDataCacheKey rhs)
bool	IsKeyLess (double sampleRate, GraphicsDataCacheKey lhs, GraphicsDataCacheKey rhs)
template<typename Container >
auto	GetPPSMatchRange (const Container &container, double pixelsPerSecond, double sampleRate)

Detailed Description

---

Audacity: A Digital Audio Editor

GraphicsDataCache.cpp

Dmitry Vedenko

Function Documentation

GetPPSMatchRange()

template<typename Container >

auto anonymous_namespace{GraphicsDataCache.cpp}::GetPPSMatchRange	(	const Container &	container,
		double	pixelsPerSecond,
		double	sampleRate
	)

Definition at line 57 of file GraphicsDataCache.cpp.

{
   return std::equal_range(
      container.begin(), container.end(), pixelsPerSecond,
      [sampleRate](auto lhs, auto rhs)
      {
         if constexpr (std::is_arithmetic_v<std::decay_t<decltype(lhs)>>)
            return !IsSamePPS(sampleRate, lhs, rhs.Key.PixelsPerSecond) &&
                   lhs < rhs.Key.PixelsPerSecond;
         else
            return !IsSamePPS(sampleRate, lhs.Key.PixelsPerSecond, rhs) &&
                   lhs.Key.PixelsPerSecond < rhs;
      });
}

References anonymous_namespace{ClipSegmentTest.cpp}::sampleRate.

Referenced by GraphicsDataCacheBase::PerformBaseLookup().

Here is the caller graph for this function:

IsKeyLess()

bool anonymous_namespace{GraphicsDataCache.cpp}::IsKeyLess	(	double	sampleRate,
		GraphicsDataCacheKey	lhs,
		GraphicsDataCacheKey	rhs
	)

Definition at line 47 of file GraphicsDataCache.cpp.

{
   if (IsSamePPS(sampleRate, lhs.PixelsPerSecond, rhs.PixelsPerSecond))
      return lhs.FirstSample < rhs.FirstSample;
   else
      return lhs.PixelsPerSecond < rhs.PixelsPerSecond;
}

References GraphicsDataCacheKey::FirstSample, IsSamePPS(), GraphicsDataCacheKey::PixelsPerSecond, and anonymous_namespace{ClipSegmentTest.cpp}::sampleRate.

Here is the call graph for this function:

IsSameKey()

bool anonymous_namespace{GraphicsDataCache.cpp}::IsSameKey	(	double	sampleRate,
		GraphicsDataCacheKey	lhs,
		GraphicsDataCacheKey	rhs
	)

Definition at line 40 of file GraphicsDataCache.cpp.

{
   return lhs.FirstSample == rhs.FirstSample &&
          IsSamePPS(sampleRate, lhs.PixelsPerSecond, rhs.PixelsPerSecond);
}

References GraphicsDataCacheKey::FirstSample, IsSamePPS(), GraphicsDataCacheKey::PixelsPerSecond, and anonymous_namespace{ClipSegmentTest.cpp}::sampleRate.

Here is the call graph for this function:

IsSamePPS()

bool anonymous_namespace{GraphicsDataCache.cpp}::IsSamePPS	(	double	sampleRate,
		double	lhs,
		double	rhs
	)

Definition at line 33 of file GraphicsDataCache.cpp.

{
   return std::abs(1.0 / lhs - 1.0 / rhs) *
             GraphicsDataCacheBase::CacheElementWidth <
          (1.0 / sampleRate);
}

References GraphicsDataCacheBase::CacheElementWidth, and anonymous_namespace{ClipSegmentTest.cpp}::sampleRate.

Referenced by IsKeyLess(), and IsSameKey().

Here is the caller graph for this function:

IsSameSample()

bool anonymous_namespace{GraphicsDataCache.cpp}::IsSameSample ( double  sampleRate, double  t0, double  t1  )

noexcept

Definition at line 25 of file GraphicsDataCache.cpp.

{
   const auto firstSample  = llrint(t0 * sampleRate);
   const auto secondSample = llrint(t1 * sampleRate);
 
   return firstSample == secondSample;
}

References anonymous_namespace{ClipSegmentTest.cpp}::sampleRate.

Referenced by GraphicsDataCacheBase::PerformBaseLookup().

Here is the caller graph for this function: