clean up warnings

src/util/canvas.cpp

@@ -368,7 +368,7 @@ void DrawPoint(sCanvas* canvas, int x, int y, u8 col)
 	case CANVAS_8:
 		canvas->img[x + y*canvas->wb] = col;
 		break;
-	
+
 	// 4-bit pixels
 	case CANVAS_4:
 		{
@@ -1151,9 +1151,9 @@ void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s = src->img + xs/4 + ys*wbs;
 			u8* d0;
 			u8* s0;
-			u8 b, b2, ms, md;
+			u8 b, b2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			// faster mode
 			if (((xs & 0x03) == 0) && ((xd & 0x03) == 0) && ((w & 0x03) == 0))
 			{
@@ -1219,9 +1219,9 @@ void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s = src->img + xs/8 + ys*wbs;
 			u8* d0;
 			u8* s0;
-			u8 b, b2, ms, md;
+			u8 b, b2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			// faster mode
 			if (((xs & 0x07) == 0) && ((xd & 0x07) == 0) && ((w & 0x07) == 0))
 			{
@@ -1291,9 +1291,9 @@ void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* d02;
 			u8* s0;
 			u8* s02;
-			u8 b, b2, bb, bb2, ms, md;
+			u8 b, b2, bb, bb2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			// faster mode
 			if (((xs & 0x07) == 0) && ((xd & 0x07) == 0) && ((w & 0x07) == 0))
 			{
@@ -1385,9 +1385,9 @@ void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s0;
 			u8* d02;
 			u8* s02;
-			u8 b, b2, bb, ms, md;
+			u8 b, b2, bb;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			// faster mode
 			if (((xs & 0x07) == 0) && ((xd & 0x07) == 0) && ((w & 0x07) == 0))
 			{
@@ -1396,7 +1396,7 @@ void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 				for (; h > 0; h--)
 				{
 					memcpy(d, s, w);
-					if (i) 
+					if (i)
 					{
 						memcpy(d2, s2, w);
 						i = False;
@@ -1555,9 +1555,9 @@ void DrawBlit(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s = src->img + xs/2 + ys*wbs;
 			u8* d0;
 			u8* s0;
-			u8 b, b1, b2, ms, md;
+			u8 b, b1, b2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			for (; h > 0; h--)
 			{
 				d0 = d;
@@ -1611,9 +1611,9 @@ void DrawBlit(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s = src->img + xs/4 + ys*wbs;
 			u8* d0;
 			u8* s0;
-			u8 b, b1, b2, ms, md;
+			u8 b, b1, b2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			for (; h > 0; h--)
 			{
 				d0 = d;
@@ -1667,9 +1667,9 @@ void DrawBlit(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* s = src->img + xs/8 + ys*wbs;
 			u8* d0;
 			u8* s0;
-			u8 b, b1, b2, ms, md;
+			u8 b, b1, b2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			for (; h > 0; h--)
 			{
 				d0 = d;
@@ -1727,9 +1727,9 @@ void DrawBlit(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int
 			u8* d02;
 			u8* s0;
 			u8* s02;
-			u8 b, b1, b12, b2, bb, bb2, ms, md;
+			u8 b, b1, b12, b2, bb, bb2;
-			int i, rs, rd, xs2, xd2;
+			int i, rs, rd;
-			
+
 			for (; h > 0; h--)
 			{
 				d0 = d;
@@ -1890,7 +1890,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 			{
 				*d++ = *(u8*)interp0->pop[2];
 			}
-	
+
 			y0++;
 			d += wbd;
 		}
@@ -1905,7 +1905,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 		{
 			xy0m = x0*m11 + y0*m12 + m13;
 			yy0m = x0*m21 + y0*m22 + m23;
-		
+
 			for (i = w; i > 0; i--)
 			{
 				x2 = (xy0m>>FRACT) & xmask;
@@ -1953,14 +1953,14 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 	else if (mode == DRAWIMG_CLAMP)
 	{
 		// source image dimension
-		u32 ww = src->w - 1;
+		int ww = src->w - 1;
-		u32 hh = src->h - 1;
+		int hh = src->h - 1;
 
 		for (; h > 0; h--)
 		{
 			xy0m = x0*m11 + y0*m12 + m13;
 			yy0m = x0*m21 + y0*m22 + m23;
-		
+
 			for (i = w; i > 0; i--)
 			{
 				x2 = xy0m>>FRACT;
@@ -1989,7 +1989,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 		{
 			xy0m = x0*m11 + y0*m12 + m13;
 			yy0m = x0*m21 + y0*m22 + m23;
-		
+
 			for (i = w; i > 0; i--)
 			{
 				x2 = xy0m>>FRACT;
@@ -2018,7 +2018,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 		{
 			xy0m = x0*m11 + y0*m12 + m13;
 			yy0m = x0*m21 + y0*m22 + m23;
-		
+
 			for (i = w; i > 0; i--)
 			{
 				x2 = xy0m>>FRACT;
@@ -2081,7 +2081,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 			{
 				*d++ = *(u8*)interp0->pop[2];
 			}
-	
+
 			y0++;
 			d += wbd;
 		}
@@ -2102,7 +2102,7 @@ void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
 
 			xy0m = x0*m11b + y0*m12b + m13;
 			yy0m = x0*m21b + y0*m22b + m23;
-		
+
 			for (i = w; i > 0; i--)
 			{
 				x2 = (xy0m>>FRACT) & xmask;
@@ -2168,20 +2168,23 @@ void DrawTileMap(sCanvas* canvas, const sCanvas* src, const u8* map, int mapwbit
 	mat->ExportInt(m);
 
 	// prepare variables
-	int wbs = src->wb; // source width bytes
 	const u8* s = src->img; // source image
 	int xy0m, yy0m; // temporary Y members
 	u8* d = canvas->img + canvas->wb*y + x; // destination image
 	int wbd = canvas->wb - w; // destination width bytes
-	int i, x2, y2;
+	int i;
-	int tilesize = 1 << tilebits; // tile size
+
+#if DRAW_HWINTER
 	int tilebits2 = tilebits*2;
+#else
+	int tilesize = 1 << tilebits; // tile size
 	int tilemask = tilesize - 1; // tile mask
 	int tileinx; // tile index
 	int mapw = 1<<mapwbits;
 	int maph = 1<<maphbits;
 	int mapmaskx = (mapw * tilesize) - 1; // mask of map width
 	int mapmasky = (maph * tilesize) - 1; // mask of map height
+#endif
 
 #if DRAW_HWINTER // 1=use hardware interpolator
 
@@ -2215,7 +2218,7 @@ void DrawTileMap(sCanvas* canvas, const sCanvas* src, const u8* map, int mapwbit
 
 	for (; h > 0; h--)
 	{
-	
+
 		int m11 = m[0];
 		int m12 = m[1];
 		int m13 = m[2];
@@ -2261,6 +2264,8 @@ void DrawTileMap(sCanvas* canvas, const sCanvas* src, const u8* map, int mapwbit
 
 		for (i = w; i > 0; i--)
 		{
+			int x2, y2;
+
 			// pixel X coordinate on the map
 			x2 = (xy0m>>FRACT) & mapmaskx;
 			xy0m += m11;
@@ -2307,7 +2312,7 @@ void DrawImgLine(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys,
 	int wbs = src->wb; // source width bytes
 	u8* d = canvas->img + xd + yd*wbd; // destination address
 	u8* s = src->img + xs + ys*wbs; // source address
-	int i, j;
+	int i;
 
 #if DRAW_HWINTER // 1=use hardware interpolator to draw images
 

src/util/canvas.h

@@ -1,5 +1,5 @@
-/** 
+/**
- * @file 
+ * @file
  * @brief Canvas
  * @author Miroslav Nemecek <Panda38@seznam.cz>
  * @see CanvasGroup
@@ -13,15 +13,15 @@
 /**
  * @addtogroup CanvasGroup
  * @brief Drawing board for shapes and images
- * @details Canvas is a drawing board. It is a support library for working with graphical surfaces and images. 
+ * @details Canvas is a drawing board. It is a support library for working with graphical surfaces and images.
- * The sCanvas structure is a set of parameters that describe the graphical surface, for use 
+ * The sCanvas structure is a set of parameters that describe the graphical surface, for use
- * in drawing functions. A graphical surface can be either a graphical frame buffer or an image, even in Flash. To draw in a 
+ * in drawing functions. A graphical surface can be either a graphical frame buffer or an image, even in Flash. To draw in a
- * graphical surface, first attach a canvas to it as a definition describing the structure of the area. Likewise, if you want 
+ * graphical surface, first attach a canvas to it as a definition describing the structure of the area. Likewise, if you want
  * to draw an image to the surface, first create a canvas for the image with its parameters. The parameters are a pointer to
- * the image data, the image dimensions, and the format. The drawing area can be a graphic area with a depth of 1, 2, 4, 8 bits 
+ * the image data, the image dimensions, and the format. The drawing area can be a graphic area with a depth of 1, 2, 4, 8 bits
- * or with attributes. In the case of drawing an image to a canvas, the source and target canvas must have the same format. 
+ * or with attributes. In the case of drawing an image to a canvas, the source and target canvas must have the same format.
  * In the case of transformation matrices, only an 8-bit graphic format can be drawn.
- * @note In PicoVGA, a default canvas @link Canvas @endlink is available. A graphic frame buffer is automatically attached to it when 
+ * @note In PicoVGA, a default canvas @link Canvas @endlink is available. A graphic frame buffer is automatically attached to it when
  * initialized with the Video() function. Otherwise, it can be used arbitrarily in the program.
  * @{
 */
@@ -48,7 +48,7 @@ typedef struct {
 } sCanvas;
 
 /**
- * @brief Draw rectangle 
+ * @brief Draw rectangle
  * @param canvas Canvas
  * @param x Horizontal position
  * @param y Veritical position
@@ -102,7 +102,7 @@ void DrawLine(sCanvas* canvas, int x1, int y1, int x2, int y2, u8 col);
  * @param y0 Veritical center coordinate
  * @param r Radius
  * @param col Color (with CANVAS_ATTRIB8 format: bit 0..3 = draw color, bit 4 = draw color is background color)
- * @param mask Mask.  Specifies, using bits 0 to 7, which eighths of the circle are drawn. 
+ * @param mask Mask.  Specifies, using bits 0 to 7, which eighths of the circle are drawn.
  * <pre>
  *         . B2|B1 .
  *       B3 .  |  . B0
@@ -120,7 +120,7 @@ void DrawFillCircle(sCanvas* canvas, int x0, int y0, int r, u8 col, u8 mask=0xff
  * @param y0 Veritical center coordinate
  * @param r Radius
  * @param col Color (with CANVAS_ATTRIB8 format: bit 0..3 = draw color, bit 4 = draw color is background color)
- * @param mask Mask.  Specifies, using bits 0 to 7, which eighths of the circle are drawn. 
+ * @param mask Mask.  Specifies, using bits 0 to 7, which eighths of the circle are drawn.
  * <pre>
  *         . B2|B1 .
  *       B3 .  |  . B0

src/vga_util.cpp

@@ -13,7 +13,7 @@
 // convert image from 16-color to 8x8 attribute format
 void Attr8Conv(u8* dst, u8* attr, const u8* src, int w, int h, const u8* pal)
 {
-	int x, y, i, j, bestnum, best2num;
+	int x, y, i, bestnum, best2num;
 	int hist[16];
 	u8 b, b2, b3, best, best2, bestcol, best2col;
 	const u8 *s;

src/vga_vmode.cpp

@@ -8,6 +8,7 @@
 #include "pico/stdlib.h"
 #include "pico/printf.h"
 #include "pico/multicore.h"
+#include "hardware/clocks.h"
 #include "picovga.h"
 
 
@@ -85,7 +86,7 @@ const sVideo VideoPAL = {
 	.hfront=  1.65000f,	// H front porch (after image, before HSYNC) in [us]
 	.hsync=   4.70000f,	// H sync pulse in [us]
 	.hback=   5.70000f,	// H back porch (after HSYNC, before image) in [us]
-	.hfull=  47.36000f,	// H full visible in [us] (formally should be 51.95 us) 
+	.hfull=  47.36000f,	// H full visible in [us] (formally should be 51.95 us)
 
 	// vertical (vertical frequency 50 Hz)
 	.vtot=625,		// total scanlines (both subframes)
@@ -123,7 +124,7 @@ const sVideo VideoPALp = {
 	.hfront=  1.65000f,	// H front porch (after image, before HSYNC) in [us]
 	.hsync=   4.70000f,	// H sync pulse in [us]
 	.hback=   5.70000f,	// H back porch (after HSYNC, before image) in [us]
-	.hfull=  47.36000f,	// H full visible in [us] (formally should be 51.95 us) 
+	.hfull=  47.36000f,	// H full visible in [us] (formally should be 51.95 us)
 
 	// vertical (vertical frequency 50 Hz)
 	.vtot=312,		// total scanlines (both subframes)
@@ -544,11 +545,11 @@ void VgaCfg(const sVgaCfg* cfg, sVmode* vmode)
 	// recalculate frequency if not locked
 	if (!cfg->lockfreq)
 	{
-		int freq2 = (int)(cpp*wfull*1000/hfull + 0.5f) + 200;
+		u32 freq2 = (u32)(cpp*wfull*1000/hfull + 0.5f) + 200;
 		if (freq2 < freq)
 		{
 			cpp++;
-			freq2 = (int)(cpp*wfull*1000/hfull + 0.5f) + 200;
+			freq2 = (u32)(cpp*wfull*1000/hfull + 0.5f) + 200;
 		}
 		if (freq2 >= freq) freq = freq2;
 		if (freq > cfg->fmax) freq = cfg->fmax;
@@ -697,8 +698,8 @@ void VgaCfg(const sVgaCfg* cfg, sVmode* vmode)
 	if (v->inter)
 	{
 		// interlaced
-		vmode->vfirst1 = (vmode->vsync1 + vmode->vpost1)/2 + vmode->vback1 + 1; 
+		vmode->vfirst1 = (vmode->vsync1 + vmode->vpost1)/2 + vmode->vback1 + 1;
-		vmode->vfirst2 = vmode->vfirst1 + vmode->vact1 + vmode->vfront1 + 
+		vmode->vfirst2 = vmode->vfirst1 + vmode->vact1 + vmode->vfront1 +
 			(vmode->vpre1 + vmode->vsync2 + vmode->vpost2)/2 + vmode->vback2;
 	}
 	else