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no longer support building to SVGAlib
This commit is contained in:
Aaron Culliney
parent
c0f38b902b
commit
6c500cad0b
215
src/svideo.c
215
src/svideo.c
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/*
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* Apple // emulator for Linux: svgalib graphics support
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*
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* Copyright 1994 Alexander Jean-Claude Bottema
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* Copyright 1995 Stephen Lee
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* Copyright 1997, 1998 Aaron Culliney
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* Copyright 1998, 1999, 2000 Michael Deutschmann
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*
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* This software package is subject to the GNU General Public License
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* version 2 or later (your choice) as published by the Free Software
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* Foundation.
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*
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* THERE ARE NO WARRANTIES WHATSOEVER.
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*
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*/
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#include <vga.h>
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#include <vgakeyboard.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/kd.h>
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#include <termios.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include "video.h"
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#include "misc.h"
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#include "keys.h"
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/* I need at least 560x192 for 80col. it seems that direct linear
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* framebuffer access to anything in the realm of 640x480x256 not
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* standard with vga/svga?
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* Memory sizes are hardcode here. ugly ugly ugly.
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*/
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static unsigned char *svga_GM; /* SVGA base address of graphic area */
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static unsigned char vga_mem_page_0[64000]; /* page0 framebuffer */
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static unsigned char vga_mem_page_1[64000]; /* page1 framebuffer */
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/* -------------------------------------------------------------------------
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video_setpage(p): Switch to screen page p
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------------------------------------------------------------------------- */
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void video_setpage(int p)
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{
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if (p == video__current_page) return;
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if (p)
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{
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memcpy(vga_mem_page_0,svga_GM,64000);
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memcpy(svga_GM,vga_mem_page_1,64000);
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video__current_page = 1;
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video__fb1 = vga_mem_page_0;
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video__fb2 = svga_GM;
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}
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else
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{
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memcpy(vga_mem_page_1,svga_GM,64000);
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memcpy(svga_GM,vga_mem_page_0,64000);
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video__current_page = 0;
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video__fb1 = svga_GM;
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video__fb2 = vga_mem_page_1;
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}
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}
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/* -------------------------------------------------------------------------
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c_initialize_colors(): Initialize color palette
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------------------------------------------------------------------------- */
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static void c_initialize_colors()
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{
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static unsigned int col2[ 3 ] = { 27, 40, 62 };
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int i, j;
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/* align the palette for hires graphics */
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for (i = 0; i < 8; i++)
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for (j = 0; j < 3; j++)
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vga_setpalette( j+i*3+32, (i & 1) ? col2[ j ] : 0,
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(i & 2) ? col2[ j ] : 0,
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(i & 4) ? col2[ j ] : 0 );
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vga_setpalette( COLOR_FLASHING_BLACK, 0, 0, 0 );
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vga_setpalette( COLOR_FLASHING_WHITE, 63, 63, 63 );
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/* dhires colors are bass-ackwards because it's easier for me to
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deal with the endianness. */
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vga_setpalette( 0x0, 0, 0, 0 ); /* (0) Black */
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vga_setpalette( 0x1, 0, 0, 32 ); /* (2) Dark Blue */
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vga_setpalette( 0x2, 0, 36, 0 ); /* (4) Dark Green */
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vga_setpalette( 0x3, 28, 6, 63 ); /* (6) Medium Blue */
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vga_setpalette( 0x4, 37, 21, 10 ); /* (8) Brown */
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vga_setpalette( 0x5, 37, 42, 42 ); /* (a) Light Grey */
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vga_setpalette( 0x6, 0, 63, 0 ); /* (c) Green */
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vga_setpalette( 0x7, 32, 63, 32 ); /* (e) Aqua */
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vga_setpalette( 0x8, 48, 0, 12 ); /* (1) Magenta */
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vga_setpalette( 0x9, 41, 13, 42 ); /* (3) Purple */
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vga_setpalette( 0xa, 26, 26, 26 ); /* (5) Light Grey */
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vga_setpalette( 0xb, 3, 47, 58 ); /* (7) Light Blue */
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vga_setpalette( 0xc, 63, 6, 11 ); /* (9) Orange */
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vga_setpalette( 0xd, 63, 39, 37 ); /* (b) Pink */
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vga_setpalette( 0xe, 63, 63, 0 ); /* (d) Yellow */
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vga_setpalette( 0xf, 63, 63, 63 ); /* (f) White */
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/* lores colors (<<4) */
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vga_setpalette(0x10, 48, 0, 12 ); /* Magenta */
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vga_setpalette(0x20, 0, 0, 32 ); /* Dark Blue */
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vga_setpalette(0x30, 41, 13, 42 ); /* Purple */
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vga_setpalette(0x40, 0, 36, 0 ); /* Dark Green */
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vga_setpalette(0x50, 26, 26, 26 ); /* Dark Gray */
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vga_setpalette(0x60, 28, 6, 63 ); /* Medium Blue */
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vga_setpalette(0x70, 3, 47, 58 ); /* Light Blue */
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vga_setpalette(0x80, 37, 21, 10 ); /* Brown */
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vga_setpalette(0x90, 63, 6, 11 ); /* Orange */
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vga_setpalette(0xa0, 37, 42, 42 ); /* Light Grey */
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vga_setpalette(0xb0, 63, 39, 37 ); /* Pink */
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vga_setpalette(0xc0, 0, 63, 0 ); /* Green */
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vga_setpalette(0xd0, 63, 63, 0 ); /* Yellow */
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vga_setpalette(0xe0, 32, 63, 32 ); /* Aqua */
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vga_setpalette(0xf0, 63, 63, 63 ); /* White */
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}
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/* -------------------------------------------------------------------------
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c_initialize_keyboard()
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------------------------------------------------------------------------- */
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static void c_initialize_keyboard()
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{
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if (keyboard_init()) {
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printf("Error: Could not switch to RAW keyboard mode.\n");
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exit(-1);
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}
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keyboard_translatekeys(DONT_CATCH_CTRLC);
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keyboard_seteventhandler( c_read_raw_key );
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}
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static void c_flash_cursor(int on) {
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if (!on) {
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vga_setpalette( COLOR_FLASHING_BLACK, 0, 0, 0 );
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vga_setpalette( COLOR_FLASHING_WHITE, 63, 63, 63 );
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} else {
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vga_setpalette( COLOR_FLASHING_BLACK, 63, 63, 63 );
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vga_setpalette( COLOR_FLASHING_WHITE, 0, 0, 0 );
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}
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}
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/* -------------------------------------------------------------------------
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video_init()
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------------------------------------------------------------------------- */
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void video_init(void) {
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/* I'm forcing VGA mode since it seems to be supported by
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* the lowest common denominator cards.
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*/
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printf("Using standard VGA 320x200 mode.\n");
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printf("Press RETURN to continue...");
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getchar();
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vga_setchipset( VGA );
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if (vga_init()) {
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printf("Cannot initialize svgalib!\n");
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exit(1);
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}
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vga_setmode( G320x200x256 );
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/* vga_claimvideomemory( 131072 );*/
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c_initialize_keyboard();
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svga_GM = video__fb1 = vga_getgraphmem();
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video__fb2 = vga_mem_page_1;
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memset(video__fb1,0,64000); /* start as black */
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memset(video__fb2,0,64000);
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c_initialize_colors();
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}
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void video_shutdown(void) {
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vga_setmode(TEXT);
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keyboard_close();
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}
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void video_sync(int block)
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{
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static int flash_count;
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if (block)
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{
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/* keyboard_waitforupdate(); --- seems to cause bad crashes... */
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usleep(TIMER_DELAY);
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keyboard_update();
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}
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else
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keyboard_update();
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switch (++flash_count)
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{
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case 6:
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c_flash_cursor(1);
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break;
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case 12:
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c_flash_cursor(0);
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flash_count = 0;
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break;
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default:
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break;
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}
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}
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