diff options
Diffstat (limited to 'halext/src/gdisp_emulation.c')
| -rw-r--r-- | halext/src/gdisp_emulation.c | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/halext/src/gdisp_emulation.c b/halext/src/gdisp_emulation.c new file mode 100644 index 00000000..26562e92 --- /dev/null +++ b/halext/src/gdisp_emulation.c @@ -0,0 +1,463 @@ +/*
+ ChibiOS/RT - Copyright (C) 2012
+ Joel Bodenmann aka Tectu <joel@unormal.org>
+
+ This file is part of ChibiOS-LCD-Driver.
+
+ ChibiOS-LCD-Driver is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS-LCD-Driver is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ Emulation routines included into gdisp_lld.c
+*/
+
+/*
+ Even though this is a software emulation of a low level driver
+ most validation doesn't need to happen here as eventually
+ we call a real low level driver routine and if validation is
+ required - it will do it.
+*/
+#include "ch.h"
+#include "hal.h"
+#include "gdisp.h"
+
+#if HAL_USE_GDISP || defined(__DOXYGEN__)
+
+#ifdef UNUSED
+#elif defined(__GNUC__)
+# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
+#elif defined(__LCLINT__)
+# define UNUSED(x) /*@unused@*/ x
+#else
+# define UNUSED(x) x
+#endif
+
+#if !GDISP_HARDWARE_POWERCONTROL
+ void gdisp_lld_setpowermode(gdisp_powermode_t UNUSED(powerMode)) {
+ }
+#endif
+
+#if !GDISP_HARDWARE_ORIENTATION
+ void gdisp_lld_setorientation(gdisp_orientation_t UNUSED(newOrientation)) {
+ }
+#endif
+
+#if !GDISP_HARDWARE_CLEARS
+ void gdisp_lld_clear(color_t color) {
+ gdisp_lld_fillarea(0, 0, GDISP.Width, GDISP.Height, color);
+ }
+#endif
+
+#if !GDISP_HARDWARE_LINES
+ void gdisp_lld_drawline(coord_t x0, coord_t y0, coord_t x1, coord_t y1, color_t color) {
+ int16_t dy, dx;
+ int16_t addx, addy;
+ int16_t P, diff, i;
+
+ #if GDISP_HARDWARE_FILLS || GDISP_HARDWARE_SCROLL
+ // speed improvement if vertical or horizontal
+ if (x0 == x1) {
+ if (y1 > y0)
+ gdisp_lld_fillarea(x0, y0, 1, y1-y0+1, color);
+ else
+ gdisp_lld_fillarea(x0, y1, 1, y0-y1+1, color);
+ return;
+ }
+ if (y0 == y1) {
+ if (x1 > x0)
+ gdisp_lld_fillarea(x0, y0, x1-x0+1, 1, color);
+ else
+ gdisp_lld_fillarea(x0, y1, x0-x1+1, 1, color);
+ return;
+ }
+ #endif
+
+ if (x1 >= x0) {
+ dx = x1 - x0;
+ addx = 1;
+ } else {
+ dx = x0 - x1;
+ addx = -1;
+ }
+ if (y1 >= y0) {
+ dy = y1 - y0;
+ addy = 1;
+ } else {
+ dy = y0 - y1;
+ addy = -1;
+ }
+
+ if (dx >= dy) {
+ dy *= 2;
+ P = dy - dx;
+ diff = P - dx;
+
+ for(i=0; i<=dx; ++i) {
+ gdisp_lld_drawpixel(x0, y0, color);
+ if (P < 0) {
+ P += dy;
+ x0 += addx;
+ } else {
+ P += diff;
+ x0 += addx;
+ y0 += addy;
+ }
+ }
+ } else {
+ dx *= 2;
+ P = dx - dy;
+ diff = P - dy;
+
+ for(i=0; i<=dy; ++i) {
+ gdisp_lld_drawpixel(x0, y0, color);
+ if (P < 0) {
+ P += dx;
+ y0 += addy;
+ } else {
+ P += diff;
+ x0 += addx;
+ y0 += addy;
+ }
+ }
+ }
+ }
+#endif
+
+#if !GDISP_HARDWARE_FILLS
+ void gdisp_lld_fillarea(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
+ #if GDISP_HARDWARE_SCROLL
+ gdisp_lld_verticalscroll(x, y, cx, cy, cy, color);
+ #elif GDISP_HARDWARE_LINES
+ coord_t x1, y1;
+
+ x1 = x + cx - 1;
+ y1 = y + cy;
+ for(; y < y1; y++)
+ gdisp_lld_drawline(x, y, x1, y, color);
+ #else
+ coord_t x0, x1, y1;
+
+ x0 = x;
+ x1 = x + cx;
+ y1 = y + cy;
+ for(; y < y1; y++)
+ for(x = x0; x < x1; x++)
+ gdisp_lld_drawpixel(x, y, color);
+ #endif
+ }
+#endif
+
+#if !GDISP_HARDWARE_BITFILLS
+ void gdisp_lld_blitarea(coord_t x, coord_t y, coord_t cx, coord_t cy, pixel_t *buffer) {
+ coord_t x0, x1, y1;
+
+ x0 = x;
+ x1 = x + cx;
+ y1 = y + cy;
+ for(; y < y1; y++)
+ for(x = x0; x < x1; x++)
+ gdisp_lld_drawpixel(x, y, *buffer++);
+ }
+#endif
+
+#if GDISP_NEED_CIRCLE && !GDISP_HARDWARE_CIRCLES
+ void gdisp_lld_drawcircle(coord_t x, coord_t y, coord_t radius, color_t color) {
+ int16_t a, b, P;
+
+ a = 0;
+ b = radius;
+ P = 1 - radius;
+
+ do {
+ gdisp_lld_drawpixel(a+x, b+y, color);
+ gdisp_lld_drawpixel(b+x, a+y, color);
+ gdisp_lld_drawpixel(x-a, b+y, color);
+ gdisp_lld_drawpixel(x-b, a+y, color);
+ gdisp_lld_drawpixel(b+x, y-a, color);
+ gdisp_lld_drawpixel(a+x, y-b, color);
+ gdisp_lld_drawpixel(x-a, y-b, color);
+ gdisp_lld_drawpixel(x-b, y-a, color);
+ if (P < 0)
+ P += 3 + 2*a++;
+ else
+ P += 5 + 2*(a++ - b--);
+ } while(a <= b);
+ }
+#endif
+
+#if GDISP_NEED_CIRCLE && !GDISP_HARDWARE_CIRCLEFILLS
+ void gdisp_lld_fillcircle(coord_t x, coord_t y, coord_t radius, color_t color) {
+ int16_t a, b, P;
+
+ a = 0;
+ b = radius;
+ P = 1 - radius;
+
+ do {
+ gdisp_lld_drawline(x-a, y+b, x+a, y+b, color);
+ gdisp_lld_drawline(x-a, y-b, x+a, y-b, color);
+ gdisp_lld_drawline(x-b, y+a, x+b, y+a, color);
+ gdisp_lld_drawline(x-b, y-a, x+b, y-a, color);
+ if (P < 0)
+ P += 3 + 2*a++;
+ else
+ P += 5 + 2*(a++ - b--);
+ } while(a <= b);
+ }
+#endif
+
+#if GDISP_NEED_ELLIPSE && !GDISP_HARDWARE_ELLIPSES
+ void gdisp_lld_drawellipse(coord_t x, coord_t y, coord_t a, coord_t b, color_t color) {
+ int dx = 0, dy = b; /* im I. Quadranten von links oben nach rechts unten */
+ long a2 = a*a, b2 = b*b;
+ long err = b2-(2*b-1)*a2, e2; /* Fehler im 1. Schritt */
+
+ do {
+ gdisp_lld_drawpixel(x+dx, y+dy, color); /* I. Quadrant */
+ gdisp_lld_drawpixel(x-dx, y+dy, color); /* II. Quadrant */
+ gdisp_lld_drawpixel(x-dx, y-dy, color); /* III. Quadrant */
+ gdisp_lld_drawpixel(x+dx, y-dy, color); /* IV. Quadrant */
+
+ e2 = 2*err;
+ if(e2 < (2*dx+1)*b2) {
+ dx++;
+ err += (2*dx+1)*b2;
+ }
+ if(e2 > -(2*dy-1)*a2) {
+ dy--;
+ err -= (2*dy-1)*a2;
+ }
+ } while(dy >= 0);
+
+ while(dx++ < a) { /* fehlerhafter Abbruch bei flachen Ellipsen (b=1) */
+ gdisp_lld_drawpixel(x+dx, y, color); /* -> Spitze der Ellipse vollenden */
+ gdisp_lld_drawpixel(x-dx, y, color);
+ }
+ }
+#endif
+
+#if GDISP_NEED_ELLIPSE && !GDISP_HARDWARE_ELLIPSEFILLS
+ void gdisp_lld_fillellipse(coord_t x, coord_t y, coord_t a, coord_t b, color_t color) {
+ int dx = 0, dy = b; /* im I. Quadranten von links oben nach rechts unten */
+ long a2 = a*a, b2 = b*b;
+ long err = b2-(2*b-1)*a2, e2; /* Fehler im 1. Schritt */
+
+ do {
+ gdisp_lld_drawline(x-dx,y+dy,x+dx,y+dy, color);
+ gdisp_lld_drawline(x-dx,y-dy,x+dx,y-dy, color);
+
+ e2 = 2*err;
+ if(e2 < (2*dx+1)*b2) {
+ dx++;
+ err += (2*dx+1)*b2;
+ }
+ if(e2 > -(2*dy-1)*a2) {
+ dy--;
+ err -= (2*dy-1)*a2;
+ }
+ } while(dy >= 0);
+
+ while(dx++ < a) { /* fehlerhafter Abbruch bei flachen Ellipsen (b=1) */
+ gdisp_lld_drawpixel(x+dx, y, color); /* -> Spitze der Ellipse vollenden */
+ gdisp_lld_drawpixel(x-dx, y, color);
+ }
+ }
+#endif
+
+#if GDISP_NEED_TEXT && !GDISP_HARDWARE_TEXT
+ #include "gdisp_fonts.h"
+#endif
+
+#if GDISP_NEED_TEXT && !GDISP_HARDWARE_TEXT
+ void gdisp_lld_drawchar(coord_t x, coord_t y, char c, font_t font, color_t color) {
+ const fontcolumn_t *ptr;
+ fontcolumn_t column;
+ coord_t width, height, xscale, yscale;
+ coord_t i, j, xs, ys;
+
+ /* Check we actually have something to print */
+ width = _getCharWidth(font, c);
+ if (!width) return;
+
+ xscale = font->xscale;
+ yscale = font->yscale;
+ height = font->height * yscale;
+ width *= xscale;
+
+ ptr = _getCharData(font, c);
+
+ /* Loop through the data and display. The font data is LSBit first, down the column */
+ for(i=0; i < width; i+=xscale) {
+ /* Get the font bitmap data for the column */
+ column = *ptr++;
+
+ /* Draw each pixel */
+ for(j=0; j < height; j+=yscale, column >>= 1) {
+ if (column & 0x01) {
+ for(xs=0; xs < xscale; xs++)
+ for(ys=0; ys < yscale; ys++)
+ gdisp_lld_drawpixel(x+i+xs, y+j+ys, color);
+ }
+ }
+ }
+ }
+#endif
+
+#if GDISP_NEED_TEXT && !GDISP_HARDWARE_TEXTFILLS
+ void gdisp_lld_fillchar(coord_t x, coord_t y, char c, font_t font, color_t color, color_t bgcolor) {
+ coord_t width, height;
+ coord_t xscale, yscale;
+
+ /* Check we actually have something to print */
+ width = _getCharWidth(font, c);
+ if (!width) return;
+
+ xscale = font->xscale;
+ yscale = font->yscale;
+ height = font->height * yscale;
+ width *= xscale;
+
+ /* Method 1: Use background fill and then draw the text */
+ #if GDISP_HARDWARE_TEXT || GDISP_SOFTWARE_TEXTFILLDRAW
+
+ /* Fill the area */
+ gdisp_lld_fillarea(x, y, width, height, bgcolor);
+
+ /* Draw the text */
+ gdisp_lld_drawchar(x, y, c, font, color);
+
+ /* Method 2: Create a single column bitmap and then blit it */
+ #elif GDISP_HARDWARE_BITFILLS && GDISP_SOFTWARE_TEXTBLITCOLUMN
+ {
+ const fontcolumn_t *ptr;
+ fontcolumn_t column;
+ coord_t i, j, xs, ys;
+
+ /* Working buffer for fast non-transparent text rendering [patch by Badger]
+ This needs to be larger than the largest character we can print.
+ Assume the max is double sized by one column.
+ */
+ static pixel_t buf[sizeof(fontcolumn_t)*8*2];
+
+ #if GDISP_NEED_VALIDATION
+ /* Check our buffer is big enough */
+ if (height > sizeof(buf)/sizeof(buf[0])) return;
+ #endif
+
+ ptr = _getCharData(font, c);
+
+ /* Loop through the data and display. The font data is LSBit first, down the column */
+ for(i = 0; i < width; i+=xscale) {
+ /* Get the font bitmap data for the column */
+ column = *ptr++;
+
+ /* Draw each pixel */
+ for(j = 0; j < height; j+=yscale, column >>= 1) {
+ if (column & 0x01) {
+ for(ys=0; ys < yscale; ys++)
+ gdispPackPixels(buf, 1, j+ys, 0, color);
+ } else {
+ for(ys=0; ys < yscale; ys++)
+ gdispPackPixels(buf, 1, j+ys, 0, bgcolor);
+ }
+ }
+
+ for(xs=0; xs < xscale; xs++)
+ gdisp_lld_blitarea(x+i+xs, y, 1, height, buf);
+ }
+ }
+
+ /* Method 3: Create a character bitmap and then blit it */
+ #elif GDISP_HARDWARE_BITFILLS
+ {
+ const fontcolumn_t *ptr;
+ fontcolumn_t column;
+ coord_t i, j, xs, ys;
+
+ /* Working buffer for fast non-transparent text rendering [patch by Badger]
+ This needs to be larger than the largest character we can print.
+ Assume the max is double sized.
+ */
+ static pixel_t buf[20*(sizeof(fontcolumn_t)*8)*2];
+
+ #if GDISP_NEED_VALIDATION
+ /* Check our buffer is big enough */
+ if (width * height > sizeof(buf)/sizeof(buf[0])) return;
+ #endif
+
+ ptr = _getCharData(font, c);
+
+ /* Loop through the data and display. The font data is LSBit first, down the column */
+ for(i = 0; i < width; i+=xscale) {
+ /* Get the font bitmap data for the column */
+ column = *ptr++;
+
+ /* Draw each pixel */
+ for(j = 0; j < height; j+=yscale, column >>= 1) {
+ if (column & 0x01) {
+ for(xs=0; xs < xscale; xs++)
+ for(ys=0; ys < yscale; ys++)
+ gdispPackPixels(buf, width, i+xs, j+ys, color);
+ } else {
+ for(xs=0; xs < xscale; xs++)
+ for(ys=0; ys < yscale; ys++)
+ gdispPackPixels(buf, width, i+xs, j+ys, bgcolor);
+ }
+ }
+ }
+
+ /* [Patch by Badger] Write all in one stroke */
+ gdisp_lld_blitarea(x, y, width, height, buf);
+ }
+
+ /* Method 4: Draw pixel by pixel */
+ #else
+ {
+ const fontcolumn_t *ptr;
+ fontcolumn_t column;
+ coord_t i, j, xs, ys;
+
+ ptr = _getCharData(font, c);
+
+ /* Loop through the data and display. The font data is LSBit first, down the column */
+ for(i = 0; i < width; i+=xscale) {
+ /* Get the font bitmap data for the column */
+ column = *ptr++;
+
+ /* Draw each pixel */
+ for(j = 0; j < height; j+=yscale, column >>= 1) {
+ if (column & 0x01) {
+ for(xs=0; xs < xscale; xs++)
+ for(ys=0; ys < yscale; ys++)
+ gdisp_lld_drawpixel(x+i, y+j, color);
+ } else {
+ for(xs=0; xs < xscale; xs++)
+ for(ys=0; ys < yscale; ys++)
+ gdisp_lld_drawpixel(x+i, y+j, bgcolor);
+ }
+ }
+ }
+ }
+ #endif
+ }
+#endif
+
+
+#if GDISP_NEED_CONTROL && !GDISP_HARDWARE_CONTROL
+ void gdisp_lld_control(int UNUSED(what), void *UNUSED(value)) {
+ /* Ignore everything */
+ }
+#endif
+
+#endif /* HAL_USE_GDISP */
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