| /* |
| * Copyright (c) 2002-2004, 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 desktop environment |
| * |
| * $Id: plasma.c,v 1.1 2006/04/17 15:18:19 kthacker Exp $ |
| * |
| */ |
| |
| #include <stdlib.h> |
| |
| #include "ctk.h" |
| #include "ctk-draw.h" |
| #include "ctk-mouse.h" |
| #include "ek.h" |
| #include "loader.h" |
| |
| static unsigned char sinetab1[256] = { |
| 128, 131, 134, 137, 140, 143, 146, 149, |
| 152, 156, 159, 162, 165, 168, 171, 174, |
| 176, 179, 182, 185, 188, 191, 193, 196, |
| 199, 201, 204, 206, 209, 211, 213, 216, |
| 218, 220, 222, 224, 226, 228, 230, 232, |
| 234, 236, 237, 239, 240, 242, 243, 245, |
| 246, 247, 248, 249, 250, 251, 252, 252, |
| 253, 254, 254, 255, 255, 255, 255, 255, |
| 255, 255, 255, 255, 255, 255, 254, 254, |
| 253, 252, 252, 251, 250, 249, 248, 247, |
| 246, 245, 243, 242, 240, 239, 237, 236, |
| 234, 232, 230, 228, 226, 224, 222, 220, |
| 218, 216, 213, 211, 209, 206, 204, 201, |
| 199, 196, 193, 191, 188, 185, 182, 179, |
| 176, 174, 171, 168, 165, 162, 159, 156, |
| 152, 149, 146, 143, 140, 137, 134, 131, |
| 128, 124, 121, 118, 115, 112, 109, 106, |
| 103, 99, 96, 93, 90, 87, 84, 81, |
| 79, 76, 73, 70, 67, 64, 62, 59, |
| 56, 54, 51, 49, 46, 44, 42, 39, |
| 37, 35, 33, 31, 29, 27, 25, 23, |
| 21, 19, 18, 16, 15, 13, 12, 10, |
| 9, 8, 7, 6, 5, 4, 3, 3, |
| 2, 1, 1, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 1, 1, |
| 2, 3, 3, 4, 5, 6, 7, 8, |
| 9, 10, 12, 13, 15, 16, 18, 19, |
| 21, 23, 25, 27, 29, 31, 33, 35, |
| 37, 39, 42, 44, 46, 49, 51, 54, |
| 56, 59, 62, 64, 67, 70, 73, 76, |
| 78, 81, 84, 87, 90, 93, 96, 99, |
| 103, 106, 109, 112, 115, 118, 121, 124, |
| }; |
| |
| static unsigned char sinetab2[256]; |
| static unsigned char sinetab3[256]; |
| |
| static unsigned char colortab[256]; |
| |
| static unsigned char colors[16] = |
| { |
| 0x00, 0x06, 0x0b, 0x04, |
| 0x0a, 0x0f, 0x07, 0x01, |
| 0x07, 0x0f, 0x0a, 0x08, |
| 0x02, 0x09, 0x00, 0x00, |
| }; |
| |
| #define XSIZE 24 |
| #define YSIZE 25 |
| |
| static unsigned char xplasma[XSIZE], yplasma[YSIZE]; |
| static unsigned char xcnt, ycnt; |
| static unsigned char xcnt01, xcnt02, xcnt1, xcnt2; |
| static unsigned char ycnt01, ycnt02, ycnt1, ycnt2; |
| |
| static unsigned char xadd01 = 0xfe; |
| static unsigned char yadd01 = 0x05; |
| static unsigned char xadd02 = 0x01; |
| static unsigned char yadd02 = 0xfb; |
| |
| static unsigned char xadd1 = 0x04; |
| static unsigned char yadd1 = 0x02; |
| static unsigned char xadd2 = 0xfc; |
| static unsigned char yadd2 = 0xf9; |
| |
| static unsigned char xadd = 0x03; |
| static unsigned char yadd = 0xfe; |
| |
| static unsigned char movcnt; |
| static unsigned char movadd = 0xfb; |
| |
| /*static DISPATCHER_SIGHANDLER(sighandler, s, data); |
| static void idle(void); |
| static struct dispatcher_proc p = |
| {DISPATCHER_PROC("Plasma screensaver", idle, |
| sighandler, |
| NULL)}; |
| static ek_id_t id;*/ |
| EK_EVENTHANDLER(eventhandler, ev, data); |
| EK_POLLHANDLER(pollhandler); |
| EK_PROCESS(p, "Plasma screensaver", EK_PRIO_LOWEST, |
| eventhandler, pollhandler, NULL); |
| static ek_id_t id = EK_ID_NONE; |
| |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| quit(void) |
| { |
| ek_exit(); |
| id = EK_ID_NONE; |
| LOADER_UNLOAD(); |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| scrninit(void) |
| { |
| unsigned char *ptr, *cptr; |
| static int i; |
| |
| /* Make sine tables */ |
| for(i = 0; i < 256; ++i) { |
| sinetab2[(unsigned char)i] = sinetab1[(unsigned char)i] / 2; |
| sinetab3[(unsigned char)i] = sinetab1[(unsigned char)i] / 4; |
| } |
| |
| /* Make color table */ |
| for(i = 0; i < 256; ++i) { |
| colortab[(unsigned char)i] = colors[(unsigned char)i / 16]; |
| } |
| |
| |
| /* Fill screen with inverted spaces. */ |
| cptr = COLOR_RAM; |
| for(ptr = (unsigned char *)0x0400; |
| ptr != (unsigned char *)0x07e8; |
| ++ptr) { |
| *ptr = 0xa0; |
| *cptr++ = 0x00; |
| } |
| |
| VIC.ctrl1 = 0x1b; /* $D011 */ |
| VIC.addr = 0x17; /* $D018 */ |
| VIC.ctrl2 = 0xc8; /* $D016 */ |
| VIC.bordercolor = 0x00; /* $D020 */ |
| VIC.bgcolor0 = 0x00; /* $D021 */ |
| CIA2.pra = 0x03; /* $DD00 */ |
| |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| EK_POLLHANDLER(pollhandler) |
| { |
| static unsigned char i, x, y; |
| register unsigned char *cptr; |
| |
| if(ctk_mode_get() == CTK_MODE_SCREENSAVER) { |
| |
| |
| xcnt1 = xcnt01; |
| xcnt2 = xcnt02; |
| |
| for(i = 0; i < XSIZE; ++i) { |
| xplasma[i] = sinetab1[xcnt1] + sinetab2[xcnt2]; |
| xcnt1 += xadd1; |
| xcnt2 += xadd2; |
| } |
| |
| ycnt1 = ycnt01; |
| ycnt2 = ycnt02; |
| |
| for(i = 0; i < YSIZE; ++i) { |
| yplasma[i] = sinetab1[ycnt1] + sinetab3[ycnt2]; |
| ycnt1 += yadd1; |
| ycnt2 += yadd2; |
| } |
| |
| xcnt01 += xadd01; |
| xcnt02 += xadd02; |
| ycnt01 += yadd01; |
| ycnt02 += yadd02; |
| |
| |
| yadd02 = sinetab3[ycnt] / 4; |
| xadd02 = sinetab3[xcnt] / 4; |
| |
| ycnt += yadd; |
| xcnt += xadd; |
| |
| movcnt += movadd; |
| cptr = (unsigned char *)(0xd800 + sinetab1[movcnt]/16); |
| for(y = 0; y < YSIZE; ++y) { |
| for(x = 0; x < XSIZE; ++x) { |
| *cptr = colortab[(xplasma[x] + yplasma[y]) & 0xff]; |
| ++cptr; |
| } |
| cptr += 40 - XSIZE; |
| } |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| /*static |
| DISPATCHER_SIGHANDLER(sighandler, s, data)*/ |
| EK_EVENTHANDLER(eventhandler, ev, data) |
| { |
| EK_EVENTHANDLER_ARGS(ev, data); |
| |
| if(ev == EK_EVENT_INIT) { |
| ctk_mode_set(CTK_MODE_SCREENSAVER); |
| ctk_mouse_hide(); |
| |
| scrninit(); |
| |
| } else if(ev == ctk_signal_screensaver_stop || |
| ev == EK_EVENT_REQUEST_EXIT) { |
| ctk_draw_init(); |
| ctk_desktop_redraw(NULL); |
| /* ctk_mode_set(CTK_MODE_NORMAL);*/ |
| quit(); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| LOADER_INIT_FUNC(plasma_init, arg) |
| { |
| arg_free(arg); |
| |
| if(id == EK_ID_NONE) { |
| id = ek_start(&p); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| |