380 lines
13 KiB
C
380 lines
13 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Additional LCD routines not present in the rockbox core
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* Drawing functions
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*
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* Copyright (C) 2005 Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "plugin.h"
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#ifdef HAVE_LCD_BITMAP
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#include "xlcd.h"
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#if (LCD_DEPTH >= 8) || (LCD_PIXELFORMAT == HORIZONTAL_PACKING)
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/* draw a filled triangle, using horizontal lines for speed */
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void xlcd_filltriangle(int x1, int y1, int x2, int y2, int x3, int y3)
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{
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int x, y;
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long fp_x1, fp_x2, fp_dx1, fp_dx2;
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/* sort vertices by increasing y value */
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if (y1 > y3)
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{
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if (y2 < y3) /* y2 < y3 < y1 */
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{
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x = x1; x1 = x2; x2 = x3; x3 = x;
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y = y1; y1 = y2; y2 = y3; y3 = y;
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}
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else if (y2 > y1) /* y3 < y1 < y2 */
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{
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x = x1; x1 = x3; x3 = x2; x2 = x;
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y = y1; y1 = y3; y3 = y2; y2 = y;
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}
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else /* y3 <= y2 <= y1 */
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{
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x = x1; x1 = x3; x3 = x;
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y = y1; y1 = y3; y3 = y;
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}
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}
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else
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{
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if (y2 < y1) /* y2 < y1 <= y3 */
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{
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x = x1; x1 = x2; x2 = x;
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y = y1; y1 = y2; y2 = y;
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}
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else if (y2 > y3) /* y1 <= y3 < y2 */
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{
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x = x2; x2 = x3; x3 = x;
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y = y2; y2 = y3; y3 = y;
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}
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/* else already sorted */
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}
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if (y1 < y3) /* draw */
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{
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fp_dx1 = ((x3 - x1) << 16) / (y3 - y1);
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fp_x1 = (x1 << 16) + (1<<15) + (fp_dx1 >> 1);
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if (y1 < y2) /* first part */
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{
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fp_dx2 = ((x2 - x1) << 16) / (y2 - y1);
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fp_x2 = (x1 << 16) + (1<<15) + (fp_dx2 >> 1);
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for (y = y1; y < y2; y++)
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{
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_xlcd_rb->lcd_hline(fp_x1 >> 16, fp_x2 >> 16, y);
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fp_x1 += fp_dx1;
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fp_x2 += fp_dx2;
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}
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}
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if (y2 < y3) /* second part */
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{
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fp_dx2 = ((x3 - x2) << 16) / (y3 - y2);
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fp_x2 = (x2 << 16) + (1<<15) + (fp_dx2 >> 1);
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for (y = y2; y < y3; y++)
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{
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_xlcd_rb->lcd_hline(fp_x1 >> 16, fp_x2 >> 16, y);
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fp_x1 += fp_dx1;
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fp_x2 += fp_dx2;
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}
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}
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}
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}
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#else /* (LCD_DEPTH < 8) && (LCD_PIXELFORMAT == VERTICAL_PACKING) */
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/* draw a filled triangle, using vertical lines for speed */
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void xlcd_filltriangle(int x1, int y1, int x2, int y2, int x3, int y3)
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{
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int x, y;
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long fp_y1, fp_y2, fp_dy1, fp_dy2;
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/* sort vertices by increasing x value */
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if (x1 > x3)
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{
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if (x2 < x3) /* x2 < x3 < x1 */
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{
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x = x1; x1 = x2; x2 = x3; x3 = x;
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y = y1; y1 = y2; y2 = y3; y3 = y;
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}
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else if (x2 > x1) /* x3 < x1 < x2 */
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{
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x = x1; x1 = x3; x3 = x2; x2 = x;
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y = y1; y1 = y3; y3 = y2; y2 = y;
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}
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else /* x3 <= x2 <= x1 */
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{
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x = x1; x1 = x3; x3 = x;
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y = y1; y1 = y3; y3 = y;
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}
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}
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else
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{
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if (x2 < x1) /* x2 < x1 <= x3 */
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{
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x = x1; x1 = x2; x2 = x;
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y = y1; y1 = y2; y2 = y;
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}
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else if (x2 > x3) /* x1 <= x3 < x2 */
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{
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x = x2; x2 = x3; x3 = x;
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y = y2; y2 = y3; y3 = y;
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}
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/* else already sorted */
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}
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if (x1 < x3) /* draw */
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{
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fp_dy1 = ((y3 - y1) << 16) / (x3 - x1);
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fp_y1 = (y1 << 16) + (1<<15) + (fp_dy1 >> 1);
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if (x1 < x2) /* first part */
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{
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fp_dy2 = ((y2 - y1) << 16) / (x2 - x1);
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fp_y2 = (y1 << 16) + (1<<15) + (fp_dy2 >> 1);
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for (x = x1; x < x2; x++)
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{
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_xlcd_rb->lcd_vline(x, fp_y1 >> 16, fp_y2 >> 16);
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fp_y1 += fp_dy1;
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fp_y2 += fp_dy2;
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}
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}
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if (x2 < x3) /* second part */
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{
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fp_dy2 = ((y3 - y2) << 16) / (x3 - x2);
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fp_y2 = (y2 << 16) + (1<<15) + (fp_dy2 >> 1);
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for (x = x2; x < x3; x++)
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{
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_xlcd_rb->lcd_vline(x, fp_y1 >> 16, fp_y2 >> 16);
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fp_y1 += fp_dy1;
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fp_y2 += fp_dy2;
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}
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}
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}
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}
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#endif /* LCD_DEPTH, LCD_PIXELFORMAT */
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#if LCD_DEPTH >= 8
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#ifdef HAVE_LCD_COLOR
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static const fb_data graylut[256] = {
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#if LCD_PIXELFORMAT == RGB565
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0x0000, 0x0000, 0x0000, 0x0020, 0x0020, 0x0821, 0x0821, 0x0841,
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0x0841, 0x0841, 0x0841, 0x0861, 0x0861, 0x1062, 0x1062, 0x1082,
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0x1082, 0x1082, 0x1082, 0x10a2, 0x10a2, 0x18a3, 0x18a3, 0x18c3,
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0x18c3, 0x18c3, 0x18c3, 0x18e3, 0x18e3, 0x20e4, 0x20e4, 0x2104,
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0x2104, 0x2104, 0x2104, 0x2124, 0x2124, 0x2124, 0x2925, 0x2945,
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0x2945, 0x2945, 0x2945, 0x2965, 0x2965, 0x2965, 0x3166, 0x3186,
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0x3186, 0x3186, 0x3186, 0x31a6, 0x31a6, 0x31a6, 0x39a7, 0x39c7,
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0x39c7, 0x39c7, 0x39c7, 0x39e7, 0x39e7, 0x39e7, 0x41e8, 0x4208,
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0x4208, 0x4208, 0x4208, 0x4228, 0x4228, 0x4228, 0x4a29, 0x4a49,
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0x4a49, 0x4a49, 0x4a49, 0x4a69, 0x4a69, 0x4a69, 0x4a69, 0x528a,
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0x528a, 0x528a, 0x528a, 0x52aa, 0x52aa, 0x52aa, 0x52aa, 0x5aab,
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0x5acb, 0x5acb, 0x5acb, 0x5acb, 0x5aeb, 0x5aeb, 0x5aeb, 0x62ec,
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0x630c, 0x630c, 0x630c, 0x630c, 0x632c, 0x632c, 0x632c, 0x6b2d,
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0x6b4d, 0x6b4d, 0x6b4d, 0x6b4d, 0x6b6d, 0x6b6d, 0x6b6d, 0x6b6d,
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0x738e, 0x738e, 0x738e, 0x738e, 0x73ae, 0x73ae, 0x73ae, 0x73ae,
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0x7bcf, 0x7bcf, 0x7bcf, 0x7bcf, 0x7bef, 0x7bef, 0x7bef, 0x7bef,
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0x8410, 0x8410, 0x8410, 0x8410, 0x8430, 0x8430, 0x8430, 0x8430,
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0x8c51, 0x8c51, 0x8c51, 0x8c51, 0x8c71, 0x8c71, 0x8c71, 0x8c71,
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0x9492, 0x9492, 0x9492, 0x9492, 0x94b2, 0x94b2, 0x94b2, 0x94b2,
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0x94d2, 0x9cd3, 0x9cd3, 0x9cd3, 0x9cf3, 0x9cf3, 0x9cf3, 0x9cf3,
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0x9d13, 0xa514, 0xa514, 0xa514, 0xa534, 0xa534, 0xa534, 0xa534,
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0xa554, 0xad55, 0xad55, 0xad55, 0xad55, 0xad75, 0xad75, 0xad75,
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0xad75, 0xb596, 0xb596, 0xb596, 0xb596, 0xb5b6, 0xb5b6, 0xb5b6,
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0xb5b6, 0xb5d6, 0xbdd7, 0xbdd7, 0xbdd7, 0xbdf7, 0xbdf7, 0xbdf7,
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0xbdf7, 0xbe17, 0xc618, 0xc618, 0xc618, 0xc638, 0xc638, 0xc638,
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0xc638, 0xc658, 0xce59, 0xce59, 0xce59, 0xce79, 0xce79, 0xce79,
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0xce79, 0xce99, 0xd69a, 0xd69a, 0xd69a, 0xd6ba, 0xd6ba, 0xd6ba,
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0xd6ba, 0xd6da, 0xd6da, 0xdedb, 0xdedb, 0xdefb, 0xdefb, 0xdefb,
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0xdefb, 0xdf1b, 0xdf1b, 0xe71c, 0xe71c, 0xe73c, 0xe73c, 0xe73c,
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0xe73c, 0xe75c, 0xe75c, 0xef5d, 0xef5d, 0xef7d, 0xef7d, 0xef7d,
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0xef7d, 0xef9d, 0xef9d, 0xf79e, 0xf79e, 0xf7be, 0xf7be, 0xf7be,
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0xf7be, 0xf7de, 0xf7de, 0xffdf, 0xffdf, 0xffff, 0xffff, 0xffff
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#elif LCD_PIXELFORMAT == RGB565SWAPPED
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0x0000, 0x0000, 0x0000, 0x2000, 0x2000, 0x2108, 0x2108, 0x4108,
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0x4108, 0x4108, 0x4108, 0x6108, 0x6108, 0x6210, 0x6210, 0x8210,
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0x8210, 0x8210, 0x8210, 0xa210, 0xa210, 0xa318, 0xa318, 0xc318,
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0xc318, 0xc318, 0xc318, 0xe318, 0xe318, 0xe420, 0xe420, 0x0421,
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0x0421, 0x0421, 0x0421, 0x2421, 0x2421, 0x2421, 0x2529, 0x4529,
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0x4529, 0x4529, 0x4529, 0x6529, 0x6529, 0x6529, 0x6631, 0x8631,
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0x8631, 0x8631, 0x8631, 0xa631, 0xa631, 0xa631, 0xa739, 0xc739,
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0xc739, 0xc739, 0xc739, 0xe739, 0xe739, 0xe739, 0xe841, 0x0842,
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0x0842, 0x0842, 0x0842, 0x2842, 0x2842, 0x2842, 0x294a, 0x494a,
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0x494a, 0x494a, 0x494a, 0x694a, 0x694a, 0x694a, 0x694a, 0x8a52,
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0x8a52, 0x8a52, 0x8a52, 0xaa52, 0xaa52, 0xaa52, 0xaa52, 0xab5a,
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0xcb5a, 0xcb5a, 0xcb5a, 0xcb5a, 0xeb5a, 0xeb5a, 0xeb5a, 0xec62,
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0x0c63, 0x0c63, 0x0c63, 0x0c63, 0x2c63, 0x2c63, 0x2c63, 0x2d6b,
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0x4d6b, 0x4d6b, 0x4d6b, 0x4d6b, 0x6d6b, 0x6d6b, 0x6d6b, 0x6d6b,
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0x8e73, 0x8e73, 0x8e73, 0x8e73, 0xae73, 0xae73, 0xae73, 0xae73,
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0xcf7b, 0xcf7b, 0xcf7b, 0xcf7b, 0xef7b, 0xef7b, 0xef7b, 0xef7b,
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0x1084, 0x1084, 0x1084, 0x1084, 0x3084, 0x3084, 0x3084, 0x3084,
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0x518c, 0x518c, 0x518c, 0x518c, 0x718c, 0x718c, 0x718c, 0x718c,
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0x9294, 0x9294, 0x9294, 0x9294, 0xb294, 0xb294, 0xb294, 0xb294,
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0xd294, 0xd39c, 0xd39c, 0xd39c, 0xf39c, 0xf39c, 0xf39c, 0xf39c,
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0x139d, 0x14a5, 0x14a5, 0x14a5, 0x34a5, 0x34a5, 0x34a5, 0x34a5,
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0x54a5, 0x55ad, 0x55ad, 0x55ad, 0x55ad, 0x75ad, 0x75ad, 0x75ad,
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0x75ad, 0x96b5, 0x96b5, 0x96b5, 0x96b5, 0xb6b5, 0xb6b5, 0xb6b5,
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0xb6b5, 0xd6b5, 0xd7bd, 0xd7bd, 0xd7bd, 0xf7bd, 0xf7bd, 0xf7bd,
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0xf7bd, 0x17be, 0x18c6, 0x18c6, 0x18c6, 0x38c6, 0x38c6, 0x38c6,
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0x38c6, 0x58c6, 0x59ce, 0x59ce, 0x59ce, 0x79ce, 0x79ce, 0x79ce,
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0x79ce, 0x99ce, 0x9ad6, 0x9ad6, 0x9ad6, 0xbad6, 0xbad6, 0xbad6,
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0xbad6, 0xdad6, 0xdad6, 0xdbde, 0xdbde, 0xfbde, 0xfbde, 0xfbde,
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0xfbde, 0x1bdf, 0x1bdf, 0x1ce7, 0x1ce7, 0x3ce7, 0x3ce7, 0x3ce7,
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0x3ce7, 0x5ce7, 0x5ce7, 0x5def, 0x5def, 0x7def, 0x7def, 0x7def,
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0x7def, 0x9def, 0x9def, 0x9ef7, 0x9ef7, 0xbef7, 0xbef7, 0xbef7,
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0xbef7, 0xdef7, 0xdef7, 0xdfff, 0xdfff, 0xffff, 0xffff, 0xffff
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#endif /* LCD_PIXELFORMAT */
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};
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#endif /* HAVE_LCD_COLOR */
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/* Draw a partial greyscale bitmap, canonical 8 bit format */
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void xlcd_gray_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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{
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const unsigned char *src_end;
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fb_data *dst;
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clipping */
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if (x < 0)
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{
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|
width += x;
|
||
|
|
src_x -= x;
|
||
|
|
x = 0;
|
||
|
|
}
|
||
|
|
if (y < 0)
|
||
|
|
{
|
||
|
|
height += y;
|
||
|
|
src_y -= y;
|
||
|
|
y = 0;
|
||
|
|
}
|
||
|
|
if (x + width > LCD_WIDTH)
|
||
|
|
width = LCD_WIDTH - x;
|
||
|
|
if (y + height > LCD_HEIGHT)
|
||
|
|
height = LCD_HEIGHT - y;
|
||
|
|
|
||
|
|
src += stride * src_y + src_x; /* move starting point */
|
||
|
|
src_end = src + stride * height;
|
||
|
|
dst = _xlcd_rb->lcd_framebuffer + LCD_WIDTH * y + x;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
const unsigned char *src_row = src;
|
||
|
|
const unsigned char *row_end = src_row + width;
|
||
|
|
fb_data *dst_row = dst;
|
||
|
|
|
||
|
|
#ifdef HAVE_LCD_COLOR
|
||
|
|
do
|
||
|
|
*dst_row++ = graylut[*src_row++];
|
||
|
|
while (src_row < row_end);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
src += stride;
|
||
|
|
dst += LCD_WIDTH;
|
||
|
|
}
|
||
|
|
while (src < src_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Draw a full greyscale bitmap, canonical 8 bit format */
|
||
|
|
void xlcd_gray_bitmap(const unsigned char *src, int x, int y, int width,
|
||
|
|
int height)
|
||
|
|
{
|
||
|
|
xlcd_gray_bitmap_part(src, 0, 0, width, x, y, width, height);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef HAVE_LCD_COLOR
|
||
|
|
/* Draw a partial colour bitmap, canonical 24 bit RGB format */
|
||
|
|
void xlcd_color_bitmap_part(const unsigned char *src, int src_x, int src_y,
|
||
|
|
int stride, int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
const unsigned char *src_end;
|
||
|
|
fb_data *dst;
|
||
|
|
|
||
|
|
/* nothing to draw? */
|
||
|
|
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
||
|
|
|| (x + width <= 0) || (y + height <= 0))
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* clipping */
|
||
|
|
if (x < 0)
|
||
|
|
{
|
||
|
|
width += x;
|
||
|
|
src_x -= x;
|
||
|
|
x = 0;
|
||
|
|
}
|
||
|
|
if (y < 0)
|
||
|
|
{
|
||
|
|
height += y;
|
||
|
|
src_y -= y;
|
||
|
|
y = 0;
|
||
|
|
}
|
||
|
|
if (x + width > LCD_WIDTH)
|
||
|
|
width = LCD_WIDTH - x;
|
||
|
|
if (y + height > LCD_HEIGHT)
|
||
|
|
height = LCD_HEIGHT - y;
|
||
|
|
|
||
|
|
src += 3 * (stride * src_y + src_x); /* move starting point */
|
||
|
|
src_end = src + 3 * stride * height;
|
||
|
|
dst = _xlcd_rb->lcd_framebuffer + LCD_WIDTH * y + x;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
const unsigned char *src_row = src;
|
||
|
|
const unsigned char *row_end = src_row + 3 * width;
|
||
|
|
fb_data *dst_row = dst;
|
||
|
|
|
||
|
|
do
|
||
|
|
{ /* only RGB565 and RGB565SWAPPED so far */
|
||
|
|
unsigned red = 31 * (*src_row++) + 127;
|
||
|
|
unsigned green = 63 * (*src_row++) + 127;
|
||
|
|
unsigned blue = 31 * (*src_row++) + 127;
|
||
|
|
|
||
|
|
red = (red + (red >> 8)) >> 8; /* approx red /= 255: */
|
||
|
|
green = (green + (green >> 8)) >> 8; /* approx green /= 255: */
|
||
|
|
blue = (blue + (blue >> 8)) >> 8; /* approx blue /= 255: */
|
||
|
|
|
||
|
|
#if LCD_PIXELFORMAT == RGB565
|
||
|
|
*dst_row++ = (red << 11) | (green << 5) | blue;
|
||
|
|
#elif LCD_PIXELFORMAT == RGB565SWAPPED
|
||
|
|
*dst_row++ = swap16((red << 11) | (green << 5) | blue);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
while (src_row < row_end);
|
||
|
|
|
||
|
|
src += 3 * stride;
|
||
|
|
dst += LCD_WIDTH;
|
||
|
|
}
|
||
|
|
while (src < src_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Draw a full colour bitmap, canonical 24 bit RGB format */
|
||
|
|
void xlcd_color_bitmap(const unsigned char *src, int x, int y, int width,
|
||
|
|
int height)
|
||
|
|
{
|
||
|
|
xlcd_color_bitmap_part(src, 0, 0, width, x, y, width, height);
|
||
|
|
}
|
||
|
|
#endif /* HAVE_LCD_COLOR */
|
||
|
|
|
||
|
|
#endif /* LCD_DEPTH >= 8 */
|
||
|
|
|
||
|
|
#endif /* HAVE_LCD_BITMAP */
|
||
|
|
|