add SAASound as an alternate SAA1099 core

DOES NOT WORK YET

extern/SAASound/src/SAASndC.cpp

@@ -0,0 +1,95 @@
+// Part of SAASound copyright 1998-2018 Dave Hooper <dave@beermex.com>
+//
+// Thanks to this file (and associated header file) you can now
+// use CSAASound from within a standard 'C' program
+//
+//////////////////////////////////////////////////////////////////////
+
+#include "SAASound.h"
+#include "types.h"
+#include "SAAEnv.h"
+#include "SAANoise.h"
+#include "SAAFreq.h"
+#include "SAAAmp.h"
+#include "SAASound.h"
+#include "SAAImpl.h"
+
+SAASND SAAAPI newSAASND(void)
+{
+	return (SAASND)(new CSAASoundInternal());
+}
+
+void SAAAPI deleteSAASND(SAASND object)
+{
+	delete (LPCSAASOUND)(object);
+}
+
+void SAAAPI SAASNDSetClockRate(SAASND object, unsigned int nClockRate)
+{
+	((LPCSAASOUND)(object))->SetClockRate(nClockRate);
+}
+
+void SAAAPI SAASNDSetSoundParameters(SAASND object, SAAPARAM uParam)
+{
+	((LPCSAASOUND)(object))->SetSoundParameters(uParam);
+}
+
+void SAAAPI SAASNDWriteAddress(SAASND object, BYTE nReg)
+{
+	((LPCSAASOUND)(object))->WriteAddress(nReg);
+}
+
+void SAAAPI SAASNDWriteData(SAASND object, BYTE nData)
+{
+	((LPCSAASOUND)(object))->WriteData(nData);
+}
+
+void SAAAPI SAASNDWriteAddressData(SAASND object, BYTE nReg, BYTE nData)
+{
+	((LPCSAASOUND)(object))->WriteAddressData(nReg, nData);
+}
+
+void SAAAPI SAASNDClear(SAASND object)
+{
+	((LPCSAASOUND)(object))->Clear();
+}
+
+SAAPARAM SAAAPI SAASNDGetCurrentSoundParameters(SAASND object)
+{
+	return ((LPCSAASOUND)(object))->GetCurrentSoundParameters();
+}
+
+unsigned short SAAAPI SAASNDGetCurrentBytesPerSample(SAASND object)
+{
+	return ((LPCSAASOUND)(object))->GetCurrentBytesPerSample();
+}
+
+unsigned short SAAAPI SAASNDGetBytesPerSample(SAAPARAM uParam)
+{
+	return CSAASound::GetBytesPerSample(uParam);
+}
+
+unsigned long SAAAPI SAASNDGetCurrentSampleRate(SAASND object)
+{
+	return ((LPCSAASOUND)(object))->GetCurrentSampleRate();
+}
+
+unsigned long SAAAPI SAASNDGetSampleRate(SAAPARAM uParam)
+{
+	return CSAASound::GetSampleRate(uParam);
+}
+
+void SAAAPI SAASNDGenerateMany(SAASND object, BYTE * pBuffer, unsigned long nSamples)
+{
+	((LPCSAASOUND)(object))->GenerateMany(pBuffer, nSamples);
+}
+
+void SAAAPI SAASNDSetSampleRate(SAASND object, unsigned int nSampleRate)
+{
+	return ((LPCSAASOUND)(object))->SetSampleRate(nSampleRate);
+}
+
+void SAAAPI SAASNDSetOversample(SAASND object, unsigned int nOversample)
+{
+	return ((LPCSAASOUND)(object))->SetOversample(nOversample);
+}