From 9e9a00fe03c231aa4f1d0dbc7849cf90bf157e65 Mon Sep 17 00:00:00 2001 From: adamdunkels Date: Sat, 17 Jun 2006 23:07:15 +0000 Subject: [PATCH] Code for drawing the VNC screen, does not work --- platform/gtk/vnc-draw.c | 210 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 platform/gtk/vnc-draw.c diff --git a/platform/gtk/vnc-draw.c b/platform/gtk/vnc-draw.c new file mode 100644 index 000000000..184c635e0 --- /dev/null +++ b/platform/gtk/vnc-draw.c @@ -0,0 +1,210 @@ +/* + * 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 2006/06/17 23:07:15 adamdunkels Exp $ + * + */ + + + +#include "vnc-draw.h" + +#include "contiki-conf.h" + +#ifndef VNC_CONF_VIEWPORT_WIDTH +#define VNC_CONF_VIEWPORT_WIDTH (32*8) +#endif + +#ifndef VNC_CONF_VIEWPORT_HEIGHT +#define VNC_CONF_VIEWPORT_HEIGHT (16*8) +#endif + +#ifndef VNC_CONF_REFRESH_ROWS +#define VNC_CONF_REFRESH_ROWS 8 +#endif + + +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 *)((u8_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; +} +/*-----------------------------------------------------------------------------------*/