aboutsummaryrefslogtreecommitdiff
path: root/libbb/speed_table.c
diff options
context:
space:
mode:
authorGravatar Rob Landley <rob@landley.net>2006-06-18 23:59:03 +0000
committerGravatar Rob Landley <rob@landley.net>2006-06-18 23:59:03 +0000
commit290fcb4213ae5ab9ec6cb228dd64ef2c9f02d26d (patch)
tree083c3dad70b970ba65848de929fbb8d4b738676a /libbb/speed_table.c
parentea224be6aa8fed5486376d3021a4cb911e935106 (diff)
downloadbusybox-290fcb4213ae5ab9ec6cb228dd64ef2c9f02d26d.tar.gz
busybox-290fcb4213ae5ab9ec6cb228dd64ef2c9f02d26d.tar.bz2
Undo all of the ugliness and some of the bloat from 15412.
Diffstat (limited to 'libbb/speed_table.c')
-rw-r--r--libbb/speed_table.c158
1 files changed, 17 insertions, 141 deletions
diff --git a/libbb/speed_table.c b/libbb/speed_table.c
index b4d576b4c..d6073f12f 100644
--- a/libbb/speed_table.c
+++ b/libbb/speed_table.c
@@ -4,160 +4,36 @@
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * 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 of the License, 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; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <termios.h>
#include "libbb.h"
-struct speed_map {
- unsigned short speed;
- unsigned short value;
-};
-
-static const struct speed_map speeds[] = {
- {B0, 0},
- {B50, 50},
- {B75, 75},
- {B110, 110},
- {B134, 134},
- {B150, 150},
- {B200, 200},
- {B300, 300},
- {B600, 600},
- {B1200, 1200},
- {B1800, 1800},
- {B2400, 2400},
- {B4800, 4800},
- {B9600, 9600},
-#ifdef B19200
- {B19200, 19200},
-#elif defined(EXTA)
- {EXTA, 19200},
-#endif
-#ifdef B38400
- {B38400, 38400/256 + 0x8000U},
-#elif defined(EXTB)
- {EXTB, 38400/256 + 0x8000U},
-#endif
-#ifdef B57600
- {B57600, 57600/256 + 0x8000U},
-#endif
-#ifdef B115200
- {B115200, 115200/256 + 0x8000U},
-#endif
-#ifdef B230400
- {B230400, 230400/256 + 0x8000U},
-#endif
-#ifdef B460800
- {B460800, 460800/256 + 0x8000U},
-#endif
-#ifdef B500000
- {B500000, 500000/256 + 0x8000U},
-#endif
-#ifdef B576000
- {B576000, 576000/256 + 0x8000U},
-#endif
-#ifdef B921600
- {B921600, 921600/256 + 0x8000U},
-#endif
-#ifdef B1000000
- {B1000000, 1000000/256 + 0x8000U},
-#endif
-#ifdef B1152000
- {B1152000, 1152000/256 + 0x8000U},
-#endif
-#ifdef B1500000
- {B1500000, 1500000/256 + 0x8000U},
-#endif
-#ifdef B2000000
- {B2000000, 2000000/256 + 0x8000U},
-#endif
-#ifdef B2500000
- {B2500000, 2500000/256 + 0x8000U},
-#endif
-#ifdef B3000000
- {B3000000, 3000000/256 + 0x8000U},
-#endif
-#ifdef B3500000
- {B3500000, 3500000/256 + 0x8000U},
-#endif
-#ifdef B4000000
- {B4000000, 4000000/256 + 0x8000U},
-#endif
+static const unsigned short speeds[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
+ 19200, 38400, 57600>>8, 115200>>8, 230400>>8, 460800>>8, 500000>>8,
+ 576000>>8, 921600>>8, 1000000>>8, 1152000>>8, 1500000>>8, 2000000>>8,
+ 3000000>>8, 3500000>>8, 4000000>>8
};
-enum { NUM_SPEEDS = (sizeof(speeds) / sizeof(struct speed_map)) };
-
-unsigned long bb_baud_to_value(speed_t speed)
+unsigned int tty_baud_to_value(speed_t speed)
{
- int i = 0;
+ int i;
- do {
- if (speed == speeds[i].speed) {
- if (speeds[i].value & 0x8000U) {
- return ((unsigned long) (speeds[i].value) & 0x7fffU) * 256;
- }
- return speeds[i].value;
- }
- } while (++i < NUM_SPEEDS);
+ for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++)
+ if (speed == speeds[i] * (i>15 ? 256 : 1))
+ return i>15 ? (i+4096-14) : i;
return 0;
}
-speed_t bb_value_to_baud(unsigned long value)
+speed_t tty_value_to_baud(unsigned int value)
{
- int i = 0;
+ int i;
- do {
- if (value == bb_baud_to_value(speeds[i].speed)) {
- return speeds[i].speed;
- }
- } while (++i < NUM_SPEEDS);
-
- return (speed_t) - 1;
-}
+ for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++)
+ if (value == (i>15 ? (i+4096-14) : i))
+ return speeds[i] * (i>15 ? 256 : 1);
-#if 0
-/* testing code */
-#include <stdio.h>
-
-int main(void)
-{
- unsigned long v;
- speed_t s;
-
- for (v = 0 ; v < 500000 ; v++) {
- s = bb_value_to_baud(v);
- if (s == (speed_t) -1) {
- continue;
- }
- printf("v = %lu -- s = %0lo\n", v, (unsigned long) s);
- }
-
- printf("-------------------------------\n");
-
- for (s = 0 ; s < 010017+1 ; s++) {
- v = bb_baud_to_value(s);
- if (!v) {
- continue;
- }
- printf("v = %lu -- s = %0lo\n", v, (unsigned long) s);
- }
-
- return 0;
+ return -1;
}
-#endif