Made INCOMPATIBLE changes to image rendering. Added inttypes.h and bakclight management in getkey().

TODO

@@ -1,6 +1,9 @@
 Bugs to fix:
 -  A few key hits ignored after leaving the application  (could not reproduce)
 -  Lost keyboard control at startup                      (could not reproduce)
+-  Influence of keyboard on some timers and RTC (maybe interrupt priority)
+-  Alignment of ALL .data / .rodata files is required to ensure converted data
+   is properly aligned
 
 Simple improvements:
 -  demo:	Try 284x124 at (-60, -28) (all disadvantages)
@@ -8,6 +11,7 @@ Simple improvements:
 -  time:	Compute CLOCKS_PER_SEC
 -  core:	Add VBR handlers debugging information (if possible)
 -  events:	Introduce KeyRepeat events
+-  library:	Implement C99's inttypes.h for Cake's UpdateExe
 Larger improvements:
 -  errno:       Introduce errno and use it more or less everywhere
 -  bopti:	Monochrome bitmaps blending modes

demo/gintdemo.ld

@@ -43,7 +43,9 @@ SECTIONS
 
 	.rodata : {
 		*(.rodata.fxconv);
+		*(.rodata.paradox);
 		*(.rodata)
+		. = ALIGN(4);
 		*(.rodata.*)
 
 		_romdata = ALIGN(4) ;

demo/test_bopti.c

@@ -25,7 +25,7 @@
 
 static void getwh(Image *img, int *width, int *height)
 {
-	const unsigned char *data;
+	const uint8_t *data;
 
 	if(!img)
 	{
@@ -37,7 +37,7 @@ static void getwh(Image *img, int *width, int *height)
 	*height	= img->height;
 	if(*width && *height) return;
 
-	data = img->data;
+	data = (uint8_t *)img->data;
 	*width	= (data[0] << 8) | data[1];
 	*height	= (data[2] << 8) | data[3];
 }

include/display.h

@@ -9,6 +9,8 @@
 #ifndef	_DISPLAY_H
 #define	_DISPLAY_H	1
 
+#include <stdint.h>
+
 
 //---
 //	Heading declarations.
@@ -36,15 +38,15 @@ enum Color
 */
 struct Image
 {
-	unsigned char magic;
+	uint8_t magic;
-	unsigned char format;
+	uint8_t format;
 
-	unsigned char width;
+	uint8_t width;
-	unsigned char height;
+	uint8_t height;
 
-	const unsigned char __attribute__((aligned(4))) data[];
+	const uint32_t data[];
 
-} __attribute__((aligned(4)));
+} __attribute__((packed, aligned(4)));
 // Useful shorthand for user code.
 typedef struct Image Image;
 

include/internals/bopti.h

@@ -59,7 +59,7 @@ struct Structure
 	int width, height;
 	int layer_size;
 
-	const unsigned char *data;
+	const uint8_t *data;
 	int columns;
 	int end_size, end_bytes;
 };

include/inttypes.h

@@ -0,0 +1,116 @@
+#ifndef	_INTTYPES_H
+#define	_INTTYPES_H
+
+// Decimal notation.
+#define	PRId8		"d"
+#define	PRId16		"d"
+#define	PRId32		"d"
+#define	PRId64		"lld"
+
+#define	PRIdLEAST8	"d"
+#define	PRIdLEAST16	"d"
+#define	PRIdLEAST32	"d"
+#define	PRIdLEAST64	"lld"
+
+#define	PRIdFAST8	"d"
+#define	PRIdFAST16	"d"
+#define	PRIdFAST32	"d"
+#define	PRIdFAST64	"lld"
+
+// Decimal notation, again.
+#define	PRIi8		"i"
+#define	PRIi16		"i"
+#define	PRIi32		"i"
+#define	PRIi64		"lli"
+
+#define	PRIiLEAST8	"i"
+#define	PRIiLEAST16	"i"
+#define	PRIiLEAST32	"i"
+#define	PRIiLEAST64	"lli"
+
+#define	PRIiFAST8	"i"
+#define	PRIiFAST16	"i"
+#define	PRIiFAST32	"i"
+#define	PRIiFAST64	"lli"
+
+// Octal notation.
+#define	PRIo8		"o"
+#define	PRIo16		"o"
+#define	PRIo32		"o"
+#define	PRIo64		"llo"
+
+#define	PRIoLEAST8	"o"
+#define	PRIoLEAST16	"o"
+#define	PRIoLEAST32	"o"
+#define	PRIoLEAST64	"llo"
+
+#define	PRIoFAST8	"o"
+#define	PRIoFAST16	"o"
+#define	PRIoFAST32	"o"
+#define	PRIoFAST64	"llo"
+
+// Unsigned integers.
+#define	PRIu8		"u"
+#define	PRIu16		"u"
+#define	PRIu32		"u"
+#define	PRIu64		"llu"
+
+#define	PRIuLEAST8	"u"
+#define	PRIuLEAST16	"u"
+#define	PRIuLEAST32	"u"
+#define	PRIuLEAST64	"llu"
+
+#define	PRIuFAST8	"u"
+#define	PRIuFAST16	"u"
+#define	PRIuFAST32	"u"
+#define	PRIuFAST64	"llu"
+
+// Lowercase hexadecimal notation.
+#define	PRIx8		"x"
+#define	PRIx16		"x"
+#define	PRIx32		"x"
+#define	PRIx64		"llx"
+
+#define	PRIxLEAST8	"x"
+#define	PRIxLEAST16	"x"
+#define	PRIxLEAST32	"x"
+#define	PRIxLEAST64	"llx"
+
+#define	PRIxFAST8	"x"
+#define	PRIxFAST16	"x"
+#define	PRIxFAST32	"x"
+#define	PRIxFAST64	"llx"
+
+// Uppercase hexadecimal notation.
+#define	PRIX8		"X"
+#define	PRIX16		"X"
+#define	PRIX32		"X"
+#define	PRIX64		"llX"
+
+#define	PRIXLEAST8	"X"
+#define	PRIXLEAST16	"X"
+#define	PRIXLEAST32	"X"
+#define	PRIXLEAST64	"llX"
+
+#define	PRIXFAST8	"X"
+#define	PRIXFAST16	"X"
+#define	PRIXFAST32	"X"
+#define	PRIXFAST64	"llX"
+
+// Format specifiers of intmax_t and uintmax_t.
+#define	PRIdMAX		"lld"
+#define	PRIiMAX		"lli"
+#define	PRIoMAX		"llo"
+#define	PRIuMAX		"llu"
+#define	PRIxMAX		"llx"
+#define	PRIXMAX		"llX"
+
+// Format specifiers of intptr_t and uintptr_t.
+#define	PRIdPTR		"d"
+#define	PRIiPTR		"i"
+#define	PRIoPTR		"o"
+#define	PRIuPTR		"u"
+#define	PRIxPTR		"x"
+#define	PRIXPTR		"X"
+
+#endif	// _INTTYPES_H

include/keyboard.h

@@ -152,6 +152,9 @@ enum GetkeyOpt
 	Getkey_ShiftModifier	= 0x01,
 	Getkey_AlphaModifier	= 0x02,
 
+	// Allow changing the backlight status on [SHIFT] + [OPTN].
+	Getkey_ManageBacklight	= 0x04,
+
 	// Key repetition. Notice that modifiers will never be repeated.
 	Getkey_RepeatArrowKeys	= 0x10,
 	Getkey_RepeatCharKeys	= 0x20,

include/screen.h

@@ -26,4 +26,10 @@ void screen_display(const void *vram);
 */
 void screen_setBacklight(int on);
 
+/*
+	screen_toggleBacklight()
+	Changes the backlight state, regardless of its current state.
+*/
+void screen_toggleBacklight(void);
+
 #endif

src/bopti/bopti_internals.c

@@ -290,7 +290,7 @@ void getStructure(struct Image *img, struct Structure *s)
 	{
 		s->width	= (img->data[0] << 8) | img->data[1];
 		s->height	= (img->data[2] << 8) | img->data[3];
-		s->data		= img->data + 4;
+		s->data		= (uint8_t *)img->data + 4;
 
 		column_count = (s->width + 31) >> 5;
 		end = 0;
@@ -300,7 +300,7 @@ void getStructure(struct Image *img, struct Structure *s)
 	{
 		s->width	= img->width;
 		s->height	= img->height;
-		s->data		= img->data;
+		s->data		= (uint8_t *)img->data;
 
 		column_count = img->width >> 5;
 		end = img->width & 31;
@@ -320,7 +320,7 @@ void getStructure(struct Image *img, struct Structure *s)
 
 	// The layer size must be rounded to a multiple of 4.
 	layer = s->height * ((column_count << 2) + end_bytes);
-	if(layer & 3) layer += 4 - (layer & 3);
+	layer = (layer + 3) & ~3;
 
 	s->columns	= column_count;
 	s->end_bytes	= end_bytes;

src/bopti/dimage.c

@@ -7,7 +7,7 @@
 */
 void dimage(int x, int y, struct Image *img)
 {
-	if(!img || img->magic != 0xb7) return;
+	if(!img || img->magic != 0x01) return;
 
 	struct Structure s;
 	struct Command command;

src/bopti/dimage_part.c

@@ -10,7 +10,7 @@
 void dimage_part(int x, int y, struct Image *img, int left, int top,
 	int width, int height)
 {
-	if(!img || img->magic != 0xb7) return;
+	if(!img || img->magic != 0x01) return;
 
 	struct Structure s;
 	struct Command command;

src/bopti/gimage.c

@@ -8,7 +8,7 @@
 */
 void gimage(int x, int y, struct Image *img)
 {
-	if(!img || img->magic != 0xb7) return;
+	if(!img || img->magic != 0x01) return;
 
 	struct Structure s;
 	struct Command command;

src/bopti/gimage_part.c

@@ -30,7 +30,7 @@ struct Rect intersect(struct Rect r1, struct Rect r2)
 void gimage_part(int x, int y, struct Image *img, int left, int top,
 	int width, int height)
 {
-	if(!img || img->magic != 0xb7) return;
+	if(!img || img->magic != 0x01) return;
 
 	struct Structure s;
 	struct Command command;

src/keyboard/getkey.c

@@ -1,6 +1,7 @@
 #include <internals/keyboard.h>
 #include <keyboard.h>
 #include <events.h>
+#include <screen.h>
 
 /*
 	getkey()
@@ -12,9 +13,8 @@ int getkey(void)
 	return getkey_opt(
 		Getkey_ShiftModifier	|
 		Getkey_AlphaModifier	|
-
+		Getkey_ManageBacklight	|
 		Getkey_RepeatArrowKeys,
-
 		0
 	);
 }
@@ -77,6 +77,13 @@ int getkey_opt(enum GetkeyOpt options, int cycles)
 		case ET_KeyPress:
 			;
 			int key = event.key;
+			if(options & Getkey_ManageBacklight && key == KEY_OPTN
+				&& modifier & MOD_SHIFT)
+			{
+				screen_toggleBacklight();
+				modifier &= ~MOD_SHIFT;
+				continue;
+			}
 			if(options & Getkey_ShiftModifier && key == KEY_SHIFT)
 			{
 				modifier ^= MOD_SHIFT;

src/screen/screen_backlight.c

@@ -20,3 +20,21 @@ void screen_setBacklight(int on)
 		else	*PNDR &= ~0x10;
 	}
 }
+
+/*
+	screen_toggleBacklight()
+	Changes the backlight state, regardless of its current state.
+*/
+void screen_toggleBacklight(void)
+{
+	if(isSH3())
+	{
+		volatile unsigned char *PGDR = (void *)0xa400012c;
+		*PGDR ^= 0x80;
+	}
+	else
+	{
+		volatile unsigned char *PNDR = (void *)0xa4050138;
+		*PNDR ^= 0x10;
+	}
+}