Make WDL resampler initial buffer size optional

Source/PS_Source/StretchSource.cpp

@@ -30,7 +30,7 @@ StretchAudioSource::StretchAudioSource(int initialnumoutchans,
 	AudioFormatManager* afm,
 	std::array<AudioParameterBool*,9>& enab_pars) : m_afm(afm)
 {
-	m_resampler = std::make_unique<WDL_Resampler>();
+	m_resampler = std::make_unique<WDL_Resampler>(4*65536);
 	m_resampler_outbuf.resize(1024*1024);
 	m_inputfile = std::make_unique<AInputS>(m_afm);
 	for (int i = 0; i < enab_pars.size(); ++i)

Source/WDL/resample.cpp

@@ -185,7 +185,7 @@ void inline WDL_Resampler::SincSample2(WDL_ResampleSample *outptr, const WDL_Res
 
 
 
-WDL_Resampler::WDL_Resampler()
+WDL_Resampler::WDL_Resampler(int initialinputbuffersize)
 {
   m_filterq=0.707f;
   m_filterpos=0.693f; // .792 ?
@@ -203,7 +203,8 @@ WDL_Resampler::WDL_Resampler()
   m_ratio=1.0; 
   m_filter_ratio=-1.0; 
   m_iirfilter=0;
-  m_rsinbuf.Resize(4 * 65536);
+  if (initialinputbuffersize>0)
+	m_rsinbuf.Resize(initialinputbuffersize);
   Reset(); 
 }
 

Source/WDL/resample.h

@@ -57,7 +57,7 @@ typedef double WDL_ResampleSample;
 class WDL_Resampler
 {
 public:
-  WDL_Resampler();
+  WDL_Resampler(int initialinputbuffersize=0);
   ~WDL_Resampler();
   // if sinc set, it overrides interp or filtercnt
   void SetMode(bool interp, int filtercnt, bool sinc, int sinc_size=64, int sinc_interpsize=32);