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SPU2-X: Stretcher: fixed a bug which may be triggered by some compiler optimizations (floating point comparisons, doesn't happen with current VS2010 project). Thanks to pseudonym for tracking it down, reading tons of asm code, and learning x87 while at it... 

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@4872 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
avihal 2011-08-15 16:55:23 +00:00
parent e0bbc1b814
commit 9bfbbf0a0c
1 changed files with 9 additions and 13 deletions
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22
plugins/spu2-x/src/Timestretcher.cpp
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@ -118,10 +118,9 @@ float addToAvg(float val){
}
template <class T>
T clamp(T val, T min, T max){
if( val > max ) return max;
if( val < min ) return min;
return val;
bool IsInRange(const T& val, const T& min, const T& max)
{
return ( min <= val && val <= max );
}
//actual stretch algorithm implementation
@ -162,26 +161,23 @@ void SndBuffer::UpdateTempoChangeSoundTouch2()
//Algorithm params: (threshold params (hysteresis), etc)
const float hys_ok_factor=1.04;
int hys_min_ok_count=clamp((int)(50.0 *(float)targetIPS/750.0), 2, 100); //consecutive iterations within hys_ok before going to 1:1 mode
int hys_min_ok_count = GetClamped((int)(50.0 *(float)targetIPS/750.0), 2, 100); //consecutive iterations within hys_ok before going to 1:1 mode
const float hys_bad_factor=1.2;
int compensationDivider=clamp((int)(100.0 *(float)targetIPS/750), 15, 150);
int compensationDivider = GetClamped((int)(100.0 *(float)targetIPS/750), 15, 150);
float tempoAdjust=bufferFullness/dynamicTargetFullness;
float avgerage = addToAvg(tempoAdjust);
tempoAdjust = avgerage;
tempoAdjust = clamp( tempoAdjust, 0.05f, 10.0f);
tempoAdjust = GetClamped( tempoAdjust, 0.05f, 10.0f);
dynamicTargetFullness += (baseTargetFullness/tempoAdjust - dynamicTargetFullness)/(double)compensationDivider;
if(
tempoAdjust == clamp(tempoAdjust, 0.9f, 1.1f)
&& dynamicTargetFullness == clamp( dynamicTargetFullness, baseTargetFullness*0.9f, baseTargetFullness*1.1f)
)
if( IsInRange(tempoAdjust, 0.9f, 1.1f) && IsInRange( dynamicTargetFullness, baseTargetFullness*0.9f, baseTargetFullness*1.1f) )
dynamicTargetFullness=baseTargetFullness;
if( !inside_hysteresis )
{
if( tempoAdjust == clamp( tempoAdjust, 1.0f/hys_ok_factor, hys_ok_factor ) )
if( IsInRange( tempoAdjust, 1.0f/hys_ok_factor, hys_ok_factor ) )
hys_ok_count++;
else
hys_ok_count=0;
@ -192,7 +188,7 @@ void SndBuffer::UpdateTempoChangeSoundTouch2()
}
}
else if( tempoAdjust != clamp( tempoAdjust, 1.0f/hys_bad_factor, hys_bad_factor ) ){
else if( !IsInRange( tempoAdjust, 1.0f/hys_bad_factor, hys_bad_factor ) ){
if(MsgOverruns()) ConLog("~~~~~~> stretch: Dynamic\n");
inside_hysteresis=false;
hys_ok_count=0;