shithub: ft2-clone

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Fix XFade bug on 16-bit pingpong samples

This bug was accidentally ported over from the original FT2 code.

--- a/src/ft2_header.h

+++ b/src/ft2_header.h

@@ -12,7 +12,7 @@

 #endif

 #include "ft2_replayer.h"

-#define PROG_VER_STR "1.24"

+#define PROG_VER_STR "1.25"

 // do NOT change these! It will only mess things up...

--- a/src/ft2_sample_ed.c

+++ b/src/ft2_sample_ed.c

@@ -254,7 +254,7 @@

 	}

 }

-inline int16_t getSampleValueNr(int8_t *ptr, uint8_t typ, int32_t pos)

+inline int16_t getSampleValue(int8_t *ptr, uint8_t typ, int32_t pos)

 {

 	assert(pos >= 0);

 	if (ptr == NULL)

@@ -271,7 +271,7 @@

 	}

 }

-inline void putSampleValueNr(int8_t *ptr, uint8_t typ, int32_t pos, int16_t val)

+inline void putSampleValue(int8_t *ptr, uint8_t typ, int32_t pos, int16_t val)

 {

 	assert(pos >= 0);

 	if (ptr == NULL)

@@ -2178,7 +2178,7 @@

 			if (x2 <= y1 || x2 >= s->repS+s->repL)

 			{

-				okBox(0, "System message", "Not enough sample data outside loop!");

+				okBox(0, "System message", "Invalid range!");

 				return;

 			}

@@ -2189,21 +2189,25 @@

 			d2 = y1 - x1;

 			d3 = x2 - y1;

-			if (d1 < 1 || d2 < 1 || d3 < 1)

+			if (d1 < 2 || d2 < 2 || d3 < 2)

 			{

-				okBox(0, "System message", "Not enough sample data outside loop!");

+				okBox(0, "System message", "Invalid range!");

 				return;

 			}

 			if (y1-d1 < 0 || y1+d1 >= s->len)

 			{

-				okBox(0, "System message", "Invalid range!");

+				okBox(0, "System message", "Not enough sample data outside loop!");

 				return;

 			}

-			dist = 1;

 			if (is16Bit)

-				dist++;

+			{

+				y1 >>= 1;

+				d1 >>= 1;

+				d2 >>= 1;

+				d3 >>= 1;

+			}

 			pauseAudio();

 			restoreSample(s);

@@ -2211,8 +2215,8 @@

 			i = 0;

 			while (i < d1)

 			{

-				a = getSampleValueNr(s->pek, t, y1 + dist * (-i - 1));

-				b = getSampleValueNr(s->pek, t, y1 + dist * i);

+				a = getSampleValue(s->pek, t, (y1 - i - 1) << is16Bit);

+				b = getSampleValue(s->pek, t, (y1 + i) << is16Bit);

 				dS1 = 1.0 - i / (double)d2; dS2 = 2.0 - dS1;

 				dS3 = 1.0 - i / (double)d3; dS4 = 2.0 - dS3;

@@ -2223,10 +2227,10 @@

 				tmp32 = (int32_t)round((b * dS4 + a * dS3) / (dS3 + dS4));

 				d = (int16_t)tmp32;

-				if (i < d2) putSampleValueNr(s->pek, t, y1 + dist * (-i - 1), c);

-				if (i < d3) putSampleValueNr(s->pek, t, y1 + dist * i, d);

+				if (i < d2) putSampleValue(s->pek, t, (y1 - i - 1) << is16Bit, c);

+				if (i < d3) putSampleValue(s->pek, t, (y1 + i) << is16Bit, d);

-				i += dist;

+				i++;

 			}

 			fixSample(s);

@@ -2239,7 +2243,7 @@

 			y1 += s->repL;

 			if (x1 >= y1 || x2 <= y1 || x2 >= s->len)

 			{

-				okBox(0, "System message", "Not enough sample data outside loop!");

+				okBox(0, "System message", "Invalid range!");

 				return;

 			}

@@ -2250,19 +2254,25 @@

 			d2 = y1 - x1;

 			d3 = x2 - y1;

-			if (d1 < 1 || d2 < 1 || d3 < 1)

+			if (d1 < 2 || d2 < 2 || d3 < 2)

 			{

-				okBox(0, "System message", "Not enough sample data outside loop!");

+				okBox(0, "System message", "Invalid range!");

 				return;

 			}

 			if (y1-d1 < 0 || y1+d1 >= s->len)

 			{

-				okBox(0, "System message", "Invalid range!");

+				okBox(0, "System message", "Not enough sample data outside loop!");

 				return;

 			}

-			dist = is16Bit ? 2 : 1;

+			if (is16Bit)

+			{

+				y1 >>= 1;

+				d1 >>= 1;

+				d2 >>= 1;

+				d3 >>= 1;

+			}

 			pauseAudio();

 			restoreSample(s);

@@ -2270,8 +2280,8 @@

 			i = 0;

 			while (i < d1)

 			{

-				a = getSampleValueNr(s->pek, t, y1 - i - dist);

-				b = getSampleValueNr(s->pek, t, y1 + i);

+				a = getSampleValue(s->pek, t, (y1 - i - 1) << is16Bit);

+				b = getSampleValue(s->pek, t, (y1 + i) << is16Bit);

 				dS1 = 1.0 - i / (double)d2; dS2 = 2.0 - dS1;

 				dS3 = 1.0 - i / (double)d3; dS4 = 2.0 - dS3;

@@ -2282,10 +2292,10 @@

 				tmp32 = (int32_t)round((b * dS4 + a * dS3) / (dS3 + dS4));

 				d = (int16_t)tmp32;

-				if (i < d2) putSampleValueNr(s->pek, t, y1 - i - dist, c);

-				if (i < d3) putSampleValueNr(s->pek, t, y1 + i, d);

+				if (i < d2) putSampleValue(s->pek, t, (y1 - i - 1) << is16Bit, c);

+				if (i < d3) putSampleValue(s->pek, t, (y1 + i) << is16Bit, d);

-				i += dist;

+				i++;

 			}

 			fixSample(s);

@@ -2304,11 +2314,11 @@

 		if (x1 < 0 || x2 <= x1 || x2 >= s->len)

 		{

-			okBox(0, "System message", "Not enough sample data outside loop!");

+			okBox(0, "System message", "Invalid range!");

 			return;

 		}

-		i = (x2 - x1 + 1) / 2;

+		i = (x2 - x1 + 1) >> 1;

 		y1 = s->repS - i;

 		y2 = s->repS + s->repL - i;

@@ -2320,7 +2330,7 @@

 		if (y1 < 0 || y2+(x2-x1) >= s->len)

 		{

-			okBox(0, "System message", "Invalid range!");

+			okBox(0, "System message", "Not enough sample data outside loop!");

 			return;

 		}

@@ -2330,7 +2340,7 @@

 		if (y1+(x2-x1) <= s->repS || d1 == 0 || d3 == 0 || d1 > s->repL)

 		{

-			okBox(0, "System message", "Not enough sample data outside loop!");

+			okBox(0, "System message", "Invalid range!");

 			return;

 		}

@@ -2343,8 +2353,8 @@

 		i = 0;

 		while (i < x2-x1)

 		{

-			a = getSampleValueNr(s->pek, t, y1 + i);

-			b = getSampleValueNr(s->pek, t, y2 + i);

+			a = getSampleValue(s->pek, t, y1 + i);

+			b = getSampleValue(s->pek, t, y2 + i);

 			dS2 = i / (double)d1;

 			dS1 = 1.0 - dS2;

@@ -2372,8 +2382,8 @@

 				d = (int16_t)tmp32;

 			}

-			putSampleValueNr(s->pek, t, y1 + i, c);

-			putSampleValueNr(s->pek, t, y2 + i, d);

+			putSampleValue(s->pek, t, y1 + i, c);

+			putSampleValue(s->pek, t, y2 + i, d);

 			i += dist;

 		}

--- a/src/ft2_sample_ed.h

+++ b/src/ft2_sample_ed.h

@@ -48,8 +48,8 @@

 void sampRepeatDown(void);

 void sampReplenUp(void);

 void sampReplenDown(void);

-int16_t getSampleValueNr(int8_t *ptr, uint8_t typ, int32_t pos);

-void putSampleValueNr(int8_t *ptr, uint8_t typ, int32_t pos, int16_t val);

+int16_t getSampleValue(int8_t *ptr, uint8_t typ, int32_t pos);

+void putSampleValue(int8_t *ptr, uint8_t typ, int32_t pos, int16_t val);

 void writeSample(bool forceSmpRedraw);

 void handleSampleDataMouseDown(bool mouseButtonHeld);

 void updateSampleEditorSample(void);

--- a/src/ft2_sample_ed_features.c

+++ b/src/ft2_sample_ed_features.c

@@ -987,8 +987,8 @@

 	{

 		int32_t index16 = i << 1;

-		x1 = (i >= mix8Size) ? 0 : getSampleValueNr(mixPtr, mixTyp, src16Bits ? index16 : i);

-		x2 = (i >= dest8Size) ? 0 : getSampleValueNr(destPtr, destTyp, dst16Bits ? index16 : i);

+		x1 = (i >= mix8Size) ? 0 : getSampleValue(mixPtr, mixTyp, src16Bits ? index16 : i);

+		x2 = (i >= dest8Size) ? 0 : getSampleValue(destPtr, destTyp, dst16Bits ? index16 : i);

 		if (!src16Bits) x1 <<= 8;

 		if (!dst16Bits) x2 <<= 8;

@@ -999,7 +999,7 @@

 		if (!dst16Bits)

 			smp32 >>= 8;

-		putSampleValueNr(destPek, destTyp, dst16Bits ? index16 : i, (int16_t)smp32);

+		putSampleValue(destPek, destTyp, dst16Bits ? index16 : i, (int16_t)smp32);

 	}

 	if (instr[destIns]->samp[destSmp].origPek != NULL)