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Diffstat (limited to 'source/framebuffer.c')
-rw-r--r--source/framebuffer.c255
1 files changed, 255 insertions, 0 deletions
diff --git a/source/framebuffer.c b/source/framebuffer.c
new file mode 100644
index 0000000..2003e58
--- /dev/null
+++ b/source/framebuffer.c
@@ -0,0 +1,255 @@
+/*
+ dsspec - Nintendo DS Sinclair Spectrum 48K emulator.
+
+ Copyright (C) 2006 Ian Cowburn
+
+ This program 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 2
+ of the License, or (at your option) any later version.
+
+ This program 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ $Id$
+*/
+
+#include <nds.h>
+#include <string.h>
+
+/* ---------------------------------------- STATIC DATA
+*/
+#define WIDTH 256
+#define HEIGHT 192
+
+static uint16 *buff=0;
+
+static uint8 font[]=
+{
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x08, 0x08, 0x08, 0x08, 0x00, 0x08, 0x00,
+ 0x00, 0x24, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x24, 0x7e, 0x24, 0x24, 0x7e, 0x24, 0x00,
+ 0x00, 0x10, 0x7c, 0x14, 0x7c, 0x50, 0x7c, 0x10,
+ 0x00, 0x46, 0x26, 0x10, 0x08, 0x64, 0x62, 0x00,
+ 0x00, 0x08, 0x14, 0x08, 0x54, 0x22, 0x5c, 0x00,
+ 0x00, 0x10, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x20, 0x10, 0x10, 0x10, 0x10, 0x20, 0x00,
+ 0x00, 0x04, 0x08, 0x08, 0x08, 0x08, 0x04, 0x00,
+ 0x00, 0x00, 0x28, 0x10, 0x7c, 0x10, 0x28, 0x00,
+ 0x00, 0x00, 0x10, 0x10, 0x7c, 0x10, 0x10, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x08,
+ 0x00, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
+ 0x00, 0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x00,
+ 0x00, 0x3c, 0x62, 0x52, 0x4a, 0x46, 0x3c, 0x00,
+ 0x00, 0x18, 0x14, 0x10, 0x10, 0x10, 0x7c, 0x00,
+ 0x00, 0x3c, 0x42, 0x40, 0x3c, 0x02, 0x7e, 0x00,
+ 0x00, 0x3c, 0x42, 0x30, 0x40, 0x42, 0x3c, 0x00,
+ 0x00, 0x10, 0x18, 0x14, 0x12, 0x7e, 0x10, 0x00,
+ 0x00, 0x7e, 0x02, 0x3e, 0x40, 0x42, 0x3c, 0x00,
+ 0x00, 0x3c, 0x02, 0x3e, 0x42, 0x42, 0x3c, 0x00,
+ 0x00, 0x7e, 0x40, 0x20, 0x10, 0x08, 0x08, 0x00,
+ 0x00, 0x3c, 0x42, 0x3c, 0x42, 0x42, 0x3c, 0x00,
+ 0x00, 0x3c, 0x42, 0x42, 0x7c, 0x40, 0x3c, 0x00,
+ 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x08, 0x00,
+ 0x00, 0x00, 0x08, 0x00, 0x00, 0x08, 0x08, 0x04,
+ 0x00, 0x00, 0x20, 0x10, 0x08, 0x10, 0x20, 0x00,
+ 0x00, 0x00, 0x00, 0x7c, 0x00, 0x7c, 0x00, 0x00,
+ 0x00, 0x00, 0x08, 0x10, 0x20, 0x10, 0x08, 0x00,
+ 0x00, 0x3c, 0x42, 0x20, 0x10, 0x00, 0x10, 0x00,
+ 0x00, 0x3c, 0x52, 0x6a, 0x7a, 0x02, 0x3c, 0x00,
+ 0x00, 0x3c, 0x42, 0x42, 0x7e, 0x42, 0x42, 0x00,
+ 0x00, 0x3e, 0x42, 0x3e, 0x42, 0x42, 0x3e, 0x00,
+ 0x00, 0x3c, 0x42, 0x02, 0x02, 0x42, 0x3c, 0x00,
+ 0x00, 0x1e, 0x22, 0x42, 0x42, 0x22, 0x1e, 0x00,
+ 0x00, 0x7e, 0x02, 0x3e, 0x02, 0x02, 0x7e, 0x00,
+ 0x00, 0x7e, 0x02, 0x3e, 0x02, 0x02, 0x02, 0x00,
+ 0x00, 0x3c, 0x42, 0x02, 0x72, 0x42, 0x3c, 0x00,
+ 0x00, 0x42, 0x42, 0x7e, 0x42, 0x42, 0x42, 0x00,
+ 0x00, 0x7c, 0x10, 0x10, 0x10, 0x10, 0x7c, 0x00,
+ 0x00, 0x40, 0x40, 0x40, 0x42, 0x42, 0x3c, 0x00,
+ 0x00, 0x22, 0x12, 0x0e, 0x12, 0x22, 0x42, 0x00,
+ 0x00, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7e, 0x00,
+ 0x00, 0x42, 0x66, 0x5a, 0x42, 0x42, 0x42, 0x00,
+ 0x00, 0x42, 0x46, 0x4a, 0x52, 0x62, 0x42, 0x00,
+ 0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00,
+ 0x00, 0x3e, 0x42, 0x42, 0x3e, 0x02, 0x02, 0x00,
+ 0x00, 0x3c, 0x42, 0x42, 0x4a, 0x52, 0x3c, 0x00,
+ 0x00, 0x3e, 0x42, 0x42, 0x3e, 0x22, 0x42, 0x00,
+ 0x00, 0x3c, 0x02, 0x3c, 0x40, 0x42, 0x3c, 0x00,
+ 0x00, 0x7f, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00,
+ 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c, 0x00,
+ 0x00, 0x42, 0x42, 0x42, 0x42, 0x24, 0x18, 0x00,
+ 0x00, 0x42, 0x42, 0x42, 0x42, 0x5a, 0x24, 0x00,
+ 0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00,
+ 0x00, 0x41, 0x22, 0x14, 0x08, 0x08, 0x08, 0x00,
+ 0x00, 0x7e, 0x20, 0x10, 0x08, 0x04, 0x7e, 0x00,
+ 0x00, 0x70, 0x10, 0x10, 0x10, 0x10, 0x70, 0x00,
+ 0x00, 0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00,
+ 0x00, 0x0e, 0x08, 0x08, 0x08, 0x08, 0x0e, 0x00,
+ 0x00, 0x08, 0x1c, 0x2a, 0x08, 0x08, 0x08, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
+ 0x00, 0x38, 0x44, 0x1e, 0x04, 0x04, 0x7e, 0x00,
+ 0x00, 0x00, 0x1c, 0x20, 0x3c, 0x22, 0x3c, 0x00,
+ 0x00, 0x04, 0x04, 0x3c, 0x44, 0x44, 0x3c, 0x00,
+ 0x00, 0x00, 0x38, 0x04, 0x04, 0x04, 0x38, 0x00,
+ 0x00, 0x20, 0x20, 0x3c, 0x22, 0x22, 0x3c, 0x00,
+ 0x00, 0x00, 0x1c, 0x22, 0x1e, 0x02, 0x3c, 0x00,
+ 0x00, 0x30, 0x08, 0x18, 0x08, 0x08, 0x08, 0x00,
+ 0x00, 0x00, 0x3c, 0x22, 0x22, 0x3c, 0x20, 0x1c,
+ 0x00, 0x02, 0x02, 0x1e, 0x22, 0x22, 0x22, 0x00,
+ 0x00, 0x08, 0x00, 0x0c, 0x08, 0x08, 0x1c, 0x00,
+ 0x00, 0x20, 0x00, 0x20, 0x20, 0x20, 0x24, 0x18,
+ 0x00, 0x04, 0x14, 0x0c, 0x0c, 0x14, 0x24, 0x00,
+ 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x30, 0x00,
+ 0x00, 0x00, 0x16, 0x2a, 0x2a, 0x2a, 0x2a, 0x00,
+ 0x00, 0x00, 0x1e, 0x22, 0x22, 0x22, 0x22, 0x00,
+ 0x00, 0x00, 0x1c, 0x22, 0x22, 0x22, 0x1c, 0x00,
+ 0x00, 0x00, 0x1e, 0x22, 0x22, 0x1e, 0x02, 0x02,
+ 0x00, 0x00, 0x3c, 0x22, 0x22, 0x3c, 0x20, 0x60,
+ 0x00, 0x00, 0x38, 0x04, 0x04, 0x04, 0x04, 0x00,
+ 0x00, 0x00, 0x1c, 0x02, 0x1c, 0x20, 0x1e, 0x00,
+ 0x00, 0x08, 0x1c, 0x08, 0x08, 0x08, 0x30, 0x00,
+ 0x00, 0x00, 0x22, 0x22, 0x22, 0x22, 0x1c, 0x00,
+ 0x00, 0x00, 0x22, 0x22, 0x14, 0x14, 0x08, 0x00,
+ 0x00, 0x00, 0x22, 0x2a, 0x2a, 0x2a, 0x14, 0x00,
+ 0x00, 0x00, 0x22, 0x14, 0x08, 0x14, 0x22, 0x00,
+ 0x00, 0x00, 0x22, 0x22, 0x22, 0x3c, 0x20, 0x1c,
+ 0x00, 0x00, 0x3e, 0x10, 0x08, 0x04, 0x3e, 0x00,
+ 0x00, 0x70, 0x10, 0x0c, 0x10, 0x10, 0x70, 0x00,
+ 0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00,
+ 0x00, 0x0e, 0x08, 0x30, 0x08, 0x08, 0x0e, 0x00,
+ 0x00, 0x28, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x3c, 0x42, 0x99, 0x85, 0x85, 0x99, 0x42, 0x3c
+};
+
+/* ---------------------------------------- PUBLIC INTERFACES
+*/
+void FB_Init(uint16 *vram)
+{
+ buff=vram;
+}
+
+
+void FB_Print(const char *text, int x, int y, int colour, int paper)
+{
+ uint16 *base;
+
+ base=buff+y*WIDTH+x;
+
+ while(*text)
+ {
+ int x,y;
+ int ch;
+
+ ch=((*text)-32)*8;
+
+ for(y=0;y<8;y++)
+ {
+ for(x=0;x<8;x++)
+ {
+ if (font[ch]&(1<<x))
+ {
+ *(base+x+y*WIDTH)=colour;
+ }
+ else
+ {
+ if (paper!=-1)
+ {
+ *(base+x+y*WIDTH)=paper;
+ }
+ }
+ }
+
+ ch++;
+ }
+
+ base+=8;
+ text++;
+ }
+}
+
+
+void FB_Centre(const char *text, int y, int colour, int paper)
+{
+ FB_Print(text,WIDTH/2-strlen(text)*4,y,colour,paper);
+}
+
+
+void FB_HLine(int x1, int x2, int y, int colour)
+{
+ uint16 *line;
+
+ line=buff+y*WIDTH+x1;
+
+ while(x1<=x2)
+ {
+ *line++=colour;
+ x1++;
+ }
+}
+
+
+void FB_VLine(int x, int y1, int y2, int colour)
+{
+ uint16 *line;
+
+ line=buff+y1*WIDTH+x;
+
+ while(y1<=y2)
+ {
+ *line=colour;
+ line+=WIDTH;
+ y1++;
+ }
+}
+
+
+void FB_Box(int x, int y, int w, int h, int colour)
+{
+ FB_HLine(x,x+w-1,y,colour);
+ FB_HLine(x,x+w-1,y+h-1,colour);
+ FB_VLine(x,y,y+h-1,colour);
+ FB_VLine(x+w-1,y,y+h-1,colour);
+}
+
+
+void FB_FillBox(int x, int y, int w, int h, int colour)
+{
+ int f;
+ uint16 *base;
+
+ base=buff+x+y*WIDTH;
+
+ while(h--)
+ {
+ for(f=0;f<w;f++)
+ {
+ *(base+f)=colour;
+ }
+
+ base+=WIDTH;
+ }
+}
+
+
+void FB_Clear(void)
+{
+ uint16 *p;
+ int f;
+
+ f=WIDTH*HEIGHT;
+ p=buff;
+
+ while(f--)
+ {
+ *p++=0x8000;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 16:41:47 +0000