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osd-contiki/backyard/platform/c64/apps/vnc-draw.c

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/*
* Copyright (c) 2003, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the Contiki VNC client
*
* $Id: vnc-draw.c,v 1.1 2007/05/23 23:11:26 oliverschmidt Exp $
*
*/
#include "vnc-draw.h"
#include "vnc-draw-asm.h"
#include "vnc-conf.h"
static unsigned char conv[256];
static unsigned char oratab[8] =
{ 0x80, 0x40, 0x20, 0x10,
0x08, 0x04, 0x02, 0x01 };
static unsigned char andtab[8] =
{ 0x7f, 0xbf, 0xdf, 0xef,
0xf7, 0xfb, 0xfd, 0xfe };
static u8_t *bitmapptrtab[VNC_CONF_VIEWPORT_HEIGHT];
static unsigned short viewport_x,
viewport_y, viewport_w, viewport_h;
u8_t vnc_draw_bitmap[(VNC_CONF_VIEWPORT_WIDTH / 8) *
VNC_CONF_VIEWPORT_HEIGHT];
u16_t vnc_draw_x;
u16_t vnc_draw_y;
u8_t *vnc_draw_dataptr;
u8_t *vnc_draw_bitmapptr;
u16_t vnc_draw_datalen;
/*-----------------------------------------------------------------------------------*/
void
vnc_draw_pixel(u16_t x, u8_t y, u8_t c)
{
u8_t o, a;
vnc_draw_bitmapptr = bitmapptrtab[y] + (x & 0x1f8);
if(c) {
o = oratab[x & 7];
*vnc_draw_bitmapptr = *vnc_draw_bitmapptr | o;
} else {
a = andtab[x & 7];
*vnc_draw_bitmapptr = *vnc_draw_bitmapptr & a;
}
}
/*-----------------------------------------------------------------------------------*/
void
vnc_draw_pixelline(u16_t x, u16_t y, u8_t *data, u16_t datalen)
{
u8_t o, a;
register u8_t *bitmapptr;
vnc_draw_x = x - viewport_x;
vnc_draw_y = y - viewport_y;
/* if(vnc_draw_y & 1) {
return;
} else {
vnc_draw_y /= 2;
}*/
if(vnc_draw_y >= VNC_CONF_VIEWPORT_HEIGHT ||
vnc_draw_x >= VNC_CONF_VIEWPORT_WIDTH) {
return;
}
vnc_draw_datalen = datalen;
if(vnc_draw_datalen + vnc_draw_x >= VNC_CONF_VIEWPORT_WIDTH) {
vnc_draw_datalen = VNC_CONF_VIEWPORT_WIDTH - vnc_draw_x;
if(vnc_draw_datalen == 0) {
return;
}
}
vnc_draw_dataptr = data;
/* vnc_draw_bitmapptr = bitmaptab[vnc_draw_y] +
(vnc_draw_x & 0x1f8);*/
for(; vnc_draw_datalen > 0; --vnc_draw_datalen) {
/* vnc_draw_pixel(vnc_draw_x, vnc_draw_y,
conv[*vnc_draw_dataptr]);*/
bitmapptr = bitmapptrtab[vnc_draw_y] + (vnc_draw_x & 0x1f8);
if(conv[*vnc_draw_dataptr]) {
o = oratab[vnc_draw_x & 7];
*bitmapptr = *bitmapptr | o;
} else {
a = andtab[vnc_draw_x & 7];
*bitmapptr = *bitmapptr & a;
}
++vnc_draw_dataptr;
++vnc_draw_x;
}
}
/*-----------------------------------------------------------------------------------*/
void
vnc_draw_init(void)
{
unsigned int tmp;
unsigned int i;
unsigned short ptr;
/* Create color conversion table. */
for(i = 0; i < 256; ++i) {
if(((i & 0xc0) > 0xc0) ||
((i & 0x38) > 0x18) ||
((i & 0x07) > 0x03)) {
conv[i] = 0;
} else {
conv[i] = 1;
}
}
memset(vnc_draw_bitmap, 0, sizeof(vnc_draw_bitmap));
for(i = 0; i < VNC_CONF_VIEWPORT_HEIGHT; ++i) {
bitmapptrtab[i] = (u8_t *)((u16_t)vnc_draw_bitmap +
((i & 0xfff8)/8) * VNC_CONF_VIEWPORT_WIDTH +
(i & 7));
}
viewport_x = 0;
viewport_y = 0;
viewport_w = VNC_CONF_VIEWPORT_WIDTH;
viewport_h = VNC_CONF_VIEWPORT_HEIGHT;
return;
}
/*-----------------------------------------------------------------------------------*/
u16_t
vnc_draw_viewport_x(void)
{
return viewport_x;
}
/*-----------------------------------------------------------------------------------*/
u16_t
vnc_draw_viewport_y(void)
{
return viewport_y;
}
/*-----------------------------------------------------------------------------------*/
u16_t
vnc_draw_viewport_w(void)
{
return viewport_w;
}
/*-----------------------------------------------------------------------------------*/
u16_t
vnc_draw_viewport_h(void)
{
return viewport_h;
}
/*-----------------------------------------------------------------------------------*/
#if 0
signed short
c64_mouse_x(void)
{
return 0;
}
/*-----------------------------------------------------------------------------------*/
signed short
c64_mouse_y(void)
{
return 0;
}
/*-----------------------------------------------------------------------------------*/
u8_t
c64_mouse_buttons(void)
{
return firebutton;
}
/*-----------------------------------------------------------------------------------*/
void
c64_set_mouse_x(unsigned short x)
{
joyx = x;
}
/*-----------------------------------------------------------------------------------*/
void
c64_set_mouse_y(unsigned short y)
{
joyy = y;
}
/*-----------------------------------------------------------------------------------*/
void
c64_set_viewport_x(unsigned short x)
{
viewport_x = x;
}
/*-----------------------------------------------------------------------------------*/
void
c64_set_viewport_y(unsigned short y)
{
viewport_y = y;
}
/*-----------------------------------------------------------------------------------*/
#endif /* 0 */
#if 0
#pragma optimize(push, off)
void
c64_scroll_up(unsigned char c)
{
asm("lda $f7");
asm("pha");
asm("lda $f8");
asm("pha");
asm("lda $f9");
asm("pha");
asm("lda $fa");
asm("pha");
asm("lda $fb");
asm("pha");
asm("lda $fc");
asm("pha");
asm("lda $fd");
asm("pha");
asm("lda $fe");
asm("pha");
asm("lda $01");
asm("pha");
asm("lda #$35");
asm("sta $01");
asm("lda #$80");
asm("sta $f7");
asm("lda #$a2");
asm("sta $f8");
asm("lda #$00");
asm("sta $f9");
asm("lda #$a0");
asm("sta $fa");
asm("lda #$80");
asm("sta $fb");
asm("lda #$e2");
asm("sta $fc");
asm("lda #$00");
asm("sta $fd");
asm("lda #$e0");
asm("sta $fe");
asm("ldy #0");
asm("loop:");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("iny");
asm("bne loop");
asm("inc $f8");
asm("inc $fa");
asm("inc $fc");
asm("inc $fe");
asm("lda $fc");
asm("cmp #$00");
asm("bne loop");
asm("ldy #0");
asm("lda #0");
asm("sta $fe00,y");
asm("sta $be00,y");
asm("sta $fcc0,y");
asm("sta $bcc0,y");
asm("iny");
asm("bne *-13");
asm("sta $ff00,y");
asm("sta $bf00,y");
asm("sta $fdc0,y");
asm("sta $bdc0,y");
asm("iny");
asm("cpy #$40");
asm("bne *-15");
asm("pla");
asm("sta $01");
asm("pla");
asm("sta $fe");
asm("pla");
asm("sta $fd");
asm("pla");
asm("sta $fc");
asm("pla");
asm("sta $fb");
asm("pla");
asm("sta $fa");
asm("pla");
asm("sta $f9");
asm("pla");
asm("sta $f8");
asm("pla");
asm("sta $f7");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
c64_scroll_down(unsigned char c)
{
asm("lda $f7");
asm("pha");
asm("lda $f8");
asm("pha");
asm("lda $f9");
asm("pha");
asm("lda $fa");
asm("pha");
asm("lda $fb");
asm("pha");
asm("lda $fc");
asm("pha");
asm("lda $fd");
asm("pha");
asm("lda $fe");
asm("pha");
asm("lda $01");
asm("pha");
asm("lda #$35");
asm("sta $01");
asm("lda #$c0");
asm("sta $fb");
asm("lda #$fb");
asm("sta $fc");
asm("lda #$40");
asm("sta $fd");
asm("lda #$fe");
asm("sta $fe");
asm("lda #$c0");
asm("sta $f7");
asm("lda #$bb");
asm("sta $f8");
asm("lda #$40");
asm("sta $f9");
asm("lda #$be");
asm("sta $fa");
asm("ldy #0");
asm("loop:");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("iny");
asm("bne loop");
asm("dec $f8");
asm("dec $fa");
asm("dec $fc");
asm("dec $fe");
asm("lda $fe");
asm("cmp #$df");
asm("bne loop");
asm("ldy #0");
asm("lda #0");
asm("sta $e000,y");
asm("sta $a000,y");
asm("sta $e140,y");
asm("sta $a140,y");
asm("iny");
asm("bne *-13");
asm("sta $e100,y");
asm("sta $a100,y");
asm("sta $e240,y");
asm("sta $a240,y");
asm("iny");
asm("cpy #$40");
asm("bne *-15");
asm("pla");
asm("sta $01");
asm("pla");
asm("sta $fe");
asm("pla");
asm("sta $fd");
asm("pla");
asm("sta $fc");
asm("pla");
asm("sta $fb");
asm("pla");
asm("sta $fa");
asm("pla");
asm("sta $f9");
asm("pla");
asm("sta $f8");
asm("pla");
asm("sta $f7");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
c64_scroll_right(unsigned char c)
{
asm("lda $f7");
asm("pha");
asm("lda $f8");
asm("pha");
asm("lda $f9");
asm("pha");
asm("lda $fa");
asm("pha");
asm("lda $fb");
asm("pha");
asm("lda $fc");
asm("pha");
asm("lda $fd");
asm("pha");
asm("lda $fe");
asm("pha");
asm("lda $01");
asm("pha");
asm("lda #$35");
asm("sta $01");
asm("lda #$00");
asm("sta $f7");
asm("lda #$a0");
asm("sta $f8");
asm("lda #$10");
asm("sta $f9");
asm("lda #$a0");
asm("sta $fa");
asm("lda #$00");
asm("sta $fb");
asm("lda #$e0");
asm("sta $fc");
asm("lda #$10");
asm("sta $fd");
asm("lda #$e0");
asm("sta $fe");
asm("ldx #0");
asm("loop3:");
asm("ldy #$ff");
asm("loop:");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("dey");
asm("cpy #$ff");
asm("bne loop");
asm("inc $f8");
asm("inc $fa");
asm("inc $fc");
asm("inc $fe");
asm("ldy #$30");
asm("loop2:");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("dey");
asm("cpy #$ff");
asm("bne loop2");
asm("lda $f7");
asm("clc");
asm("adc #$40");
asm("sta $f7");
asm("sta $fb");
asm("bcc :+");
asm("inc $f8");
asm("inc $fc");
asm(":");
asm("lda $f9");
asm("clc");
asm("adc #$40");
asm("sta $f9");
asm("sta $fd");
asm("bcc :+");
asm("inc $fa");
asm("inc $fe");
asm(":");
asm("inx");
asm("cpx #24");
asm("bne loop3");
asm("pla");
asm("sta $01");
asm("pla");
asm("sta $fe");
asm("pla");
asm("sta $fd");
asm("pla");
asm("sta $fc");
asm("pla");
asm("sta $fb");
asm("pla");
asm("sta $fa");
asm("pla");
asm("sta $f9");
asm("pla");
asm("sta $f8");
asm("pla");
asm("sta $f7");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
c64_scroll_left(unsigned char c)
{
asm("lda $f7");
asm("pha");
asm("lda $f8");
asm("pha");
asm("lda $f9");
asm("pha");
asm("lda $fa");
asm("pha");
asm("lda $fb");
asm("pha");
asm("lda $fc");
asm("pha");
asm("lda $fd");
asm("pha");
asm("lda $fe");
asm("pha");
asm("lda $01");
asm("pha");
asm("lda #$35");
asm("sta $01");
asm("lda #$10");
asm("sta $f7");
asm("lda #$a0");
asm("sta $f8");
asm("lda #$00");
asm("sta $f9");
asm("lda #$a0");
asm("sta $fa");
asm("lda #$10");
asm("sta $fb");
asm("lda #$e0");
asm("sta $fc");
asm("lda #$00");
asm("sta $fd");
asm("lda #$e0");
asm("sta $fe");
asm("ldx #0");
asm("loop3:");
asm("ldy #0");
asm("loop:");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("iny");
asm("bne loop");
asm("inc $f8");
asm("inc $fa");
asm("inc $fc");
asm("inc $fe");
asm("ldy #0");
asm("loop2:");
asm("lda ($f7),y");
asm("sta ($f9),y");
asm("lda ($fb),y");
asm("sta ($fd),y");
asm("iny");
asm("cpy #$30");
asm("bne loop2");
asm("lda $f7");
asm("clc");
asm("adc #$40");
asm("sta $f7");
asm("sta $fb");
asm("bcc :+");
asm("inc $f8");
asm("inc $fc");
asm(":");
asm("lda $f9");
asm("clc");
asm("adc #$40");
asm("sta $f9");
asm("sta $fd");
asm("bcc :+");
asm("inc $fa");
asm("inc $fe");
asm(":");
asm("inx");
asm("cpx #24");
asm("bne loop3");
asm("pla");
asm("sta $01");
asm("pla");
asm("sta $fe");
asm("pla");
asm("sta $fd");
asm("pla");
asm("sta $fc");
asm("pla");
asm("sta $fb");
asm("pla");
asm("sta $fa");
asm("pla");
asm("sta $f9");
asm("pla");
asm("sta $f8");
asm("pla");
asm("sta $f7");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#endif /* 0 */
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