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-rw-r--r--braille_tsi.c317
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diff --git a/braille_tsi.c b/braille_tsi.c
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+/* bd-tsi.c, TSI specific key bindings and display commands
+ *
+ * dotscreen
+ * A braille interface to unix tty terminals
+ * Authors: Hadi Bargi Rangin bargi@dots.physics.orst.edu
+ * Bill Barry barryb@dots.physics.orst.edu
+ *
+ * Copyright (c) 1995 by Science Access Project, Oregon State University.
+ *
+ *
+ * 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, 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 (see the file COPYING); if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ ****************************************************************
+ * $Id: bd-tsi.c,v 1.1 1995/09/06 15:46:36 jnweiger Exp jnweiger $
+ */
+
+#include "config.h"
+#include "screen.h"
+#include "extern.h"
+#include "braille.h"
+
+#ifdef HAVE_BRAILLE
+
+extern struct display *display;
+
+struct key2rc {
+ int key;
+ int nr;
+ char *arg1;
+ char *arg2;
+};
+
+
+static int tsi_ctype = 1; /* cursor type, 0,1,2 */
+
+static int tsi_line_type; /* indicates number of cells on powerbraille
+ display 01=20 cells 02=40 cells 03=80 cells */
+
+static int display_status_tsi __P((void));
+static int write_line_tsi __P((char *, int, int));
+static void buttonpress_tsi __P((struct key2rc *));
+static void buttonpress_navigator_40 __P((void));
+static void buttonpress_powerbraille_40 __P((void));
+static void buttonpress_powerbraille_80 __P((void));
+
+int
+bd_init_powerbraille_40()
+{
+ bd.write_line_braille = write_line_tsi;
+ bd.buttonpress = buttonpress_powerbraille_40;
+ bd.bd_response_test = display_status_tsi;
+ bd.bd_ncells = 40;
+ tsi_line_type = 2;
+ return 0;
+}
+
+int
+bd_init_powerbraille_80()
+{
+ bd.write_line_braille = write_line_tsi;
+ bd.buttonpress = buttonpress_powerbraille_80;
+ bd.bd_response_test = display_status_tsi;
+ bd.bd_ncells = 80;
+ tsi_line_type = 3;
+ return 0;
+}
+
+int
+bd_init_navigator_40()
+{
+ bd.write_line_braille = write_line_tsi;
+ bd.buttonpress = buttonpress_navigator_40;
+ bd.bd_response_test = display_status_tsi;
+ bd.bd_ncells = 40;
+ tsi_line_type = 2;
+ return 0;
+}
+
+static int
+display_status_tsi()
+{
+ char obuf[3],ibuf[20];
+ int r;
+
+ obuf[0] = 0xff;
+ obuf[1] = 0xff;
+ obuf[2] = 0x0a;
+ r = read(bd.bd_fd, ibuf, 20); /* flush the input port */
+ r = write(bd.bd_fd, obuf, 3);
+ if (r != 3)
+ return -1;
+
+ /* we have written to the display asking for a response
+ we wait 1 second for the response, read it and if no
+ response we wait 2 seconds, if still no response,
+ return -1 to indicate no braille display available */
+ sleep(1);
+ r = read(bd.bd_fd, ibuf, 2);
+ if (r == -1)
+ {
+ sleep(2);
+ r = read(bd.bd_fd, ibuf, 2);
+ }
+ debug2("first chars from braille display %d %d\n",ibuf[0],ibuf[1]);
+ if (r != 2 || ibuf[0] != 0 || ibuf[1] != 5)
+ return -1;
+
+ r= read(bd.bd_fd,ibuf,2);
+ if (r != 2)
+ return -1;
+ debug2("braille display size:%d dots:%d\n", ibuf[0], ibuf[1]);
+ bd.bd_ncells = (unsigned char)ibuf[0];
+ if (bd.bd_ncells <= 1)
+ return -1;
+ r = read(bd.bd_fd,ibuf,1);
+ if (r != 1)
+ return -1;
+ if (r != -1)
+ if (ibuf[0] == 'V')
+ r = read(bd.bd_fd, ibuf, 3);
+ else
+ r = read(bd.bd_fd, ibuf + 1, 2) + 1;
+ if (r != 3)
+ return -1;
+ ibuf[3] = 0;
+ debug1("braille display version %s\n", ibuf);
+ bd.bd_version = atof(ibuf);
+ return 0;
+}
+
+
+static int
+write_line_tsi (bstr,line_length, cursor_pos)
+char *bstr;
+int line_length, cursor_pos;
+{
+ int obp, i;
+ bd.bd_obuf[0] = 0xff;
+ bd.bd_obuf[1] = 0xff;
+ bd.bd_obuf[2] = tsi_line_type;
+ bd.bd_obuf[3] = 0x07;
+ bd.bd_obuf[4] = cursor_pos;
+ bd.bd_obuf[5] = tsi_ctype;
+ obp=6;
+
+ for (i=0; i < line_length; i++)
+ {
+ bd.bd_obuf[2*i+obp] = 0;
+ bd.bd_obuf[2*i+1+obp] = bd.bd_btable[(int)(unsigned char)bstr[i]];
+ }
+ for (i=line_length; i < bd.bd_ncells; i++)
+ {
+ bd.bd_obuf[2*i+obp] = 0;
+ bd.bd_obuf[2*i+1+obp] = bd.bd_btable[(int)' '];
+ }
+
+ bd.bd_obuflen = 2*bd.bd_ncells + obp ;
+ return 0;
+}
+
+static struct key2rc keys_navigator_40[] = {
+ {0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
+ {0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
+ {0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
+ {0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
+ {0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
+ {0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
+ {0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
+ {0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
+ {0x6000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
+ {0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
+ {0x12000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
+ {0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
+ {0xa000, RC_BD_INFO, "1032", 0}, /* bc 6, 8 */
+ {0x14000000, RC_BD_INFO, "2301", 0}, /* sc 1, 3 */
+ {0x4008000, RC_BD_INFO, "3330", 0}, /* bc+sc 1, 8 */
+ {0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
+ {0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
+ {0x40000000, RC_STUFF, "\015", 0}, /* 5 */
+ {0x20000, RC_BD_LINK, 0, 0}, /* 10 */
+ {0x10002000, RC_BD_SCROLL, 0, 0}, /* 3, 6 */
+ {0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
+ {0x14000, RC_BD_SKIP, 0, 0}, /* 7, 9*/
+ {-1, RC_ILLEGAL, 0, 0}
+};
+
+static struct key2rc keys_powerbraille_40[] = {
+ {0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
+ {0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
+ {0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
+ {0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
+ {0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
+ {0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
+ {0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
+ {0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
+ {0x8002000, RC_BD_UPPER_LEFT, 0, 0}, /* 2, 6 */
+ {0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
+ {0x20002000, RC_BD_LOWER_LEFT, 0, 0}, /* 3, 6 */
+ {0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
+ {0x8008000, RC_BD_INFO, "1032", 0}, /* bc 2, 8 */
+ {0x6000, RC_BD_INFO, "2301", 0}, /* 6, 7 */
+ {0x8004000, RC_BD_INFO, "3330", 0}, /* bc+sc 2, 7 */
+ {0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
+ {0x20008000, RC_BD_EIGHTDOT, 0, 0}, /* 4, 6 */
+ {0x40000000, RC_STUFF, "\015", 0}, /* 5 */
+ {0x20000, RC_BD_LINK, 0, 0}, /* 10 */
+ {0xa000, RC_BD_SCROLL, 0, 0}, /* 6, 8 */
+ {0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
+ {0x20004000, RC_BD_SKIP, 0, 0}, /* 4, 7 */
+ {-1, RC_ILLEGAL, 0, 0}
+};
+
+
+static struct key2rc keys_powerbraille_80[] = {
+ {0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
+ {0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
+ {0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
+ {0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
+ {0x40000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
+ {0x100000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
+ {0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
+ {0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
+ {0x44000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
+ {0x104000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
+ {0x50000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
+ {0x110000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
+ {0x8100000, RC_BD_INFO, "1032", 0}, /* 2, 8 */
+ {0x8040000, RC_BD_INFO, "2301", 0}, /* 2, 6 */
+ {0x140000, RC_BD_INFO, "3330", 0}, /* 6, 8 */
+ {0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
+ {0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
+ {0x40000000, RC_STUFF, "\015", 0}, /* 5 */
+ {0x20000, RC_BD_LINK, 0, 0}, /* 10 */
+ {0x20004000, RC_BD_SCROLL, 0, 0}, /* 4, 7 */
+ {0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
+ {0x40010000, RC_BD_SKIP, 0, 0}, /* 5, 9 */
+ {-1, RC_ILLEGAL, 0, 0}
+};
+
+static void
+buttonpress_tsi(tab)
+struct key2rc *tab;
+{
+ int i, nb;
+ int bkeys;
+ unsigned char buf[10];
+ nb = read(bd.bd_fd, buf, 10);
+ debug1("buttonpress_tsi: read %d bytes\n", nb);
+ for (i=0, bkeys=0; i < nb; i++)
+ {
+ switch (buf[i] & 0xE0)
+ {
+ case 0x00: bkeys += ((int)(buf[i] & 0x1f) ); break;
+ case 0x20: bkeys += ((int)(buf[i] & 0x1f) << 5 ); break;
+ case 0x40: bkeys += ((int)(buf[i] & 0x1f) << 9 ); break;
+ case 0x60: bkeys += ((int)(buf[i] & 0x1f) << 13 ); break;
+ case 0xA0: bkeys += ((int)(buf[i] & 0x1f) << 18 ); break;
+ case 0xC0: bkeys += ((int)(buf[i] & 0x1f) << 22 ); break;
+ case 0xE0: bkeys += ((int)(buf[i] & 0x1f) << 26 ); break;
+ default: break;
+ }
+ }
+ debug1("bkeys %x\n", bkeys);
+ for (i = 0; tab[i].key != -1; i++)
+ if (bkeys == tab[i].key)
+ break;
+ debug1("bkey index %d\n", i);
+ if (tab[i].key != -1 && tab[i].nr != RC_ILLEGAL)
+ {
+ char *args[3];
+
+ struct action act;
+ args[0] = tab[i].arg1;
+ args[1] = tab[i].arg2;
+ args[2] = 0;
+ act.nr = tab[i].nr;
+ act.args = args;
+ display = bd.bd_dpy;
+ DoAction(&act, -2);
+ }
+}
+
+
+static void
+buttonpress_navigator_40()
+{
+ buttonpress_tsi(keys_navigator_40);
+}
+
+static void
+buttonpress_powerbraille_40()
+{
+ buttonpress_tsi(keys_powerbraille_40);
+}
+
+static void
+buttonpress_powerbraille_80()
+{
+ buttonpress_tsi(keys_powerbraille_80);
+}
+
+#endif /* HAVE_BRAILLE */
+
+
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