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Diffstat (limited to 'sys/qcam/qcam-os.c')
-rw-r--r--sys/qcam/qcam-os.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/sys/qcam/qcam-os.c b/sys/qcam/qcam-os.c
deleted file mode 100644
index 5a8f12591..000000000
--- a/sys/qcam/qcam-os.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/* qcam-Linux.c -- Linux-specific routines for accessing QuickCam */
-
-/* Version 0.1, January 2, 1996 */
-/* Version 0.5, August 24, 1996 */
-
-#define LOCALSTATEDIR ""
-//#define LOCALSTATEDIR "/var/run"
-
-/******************************************************************
-
-Copyright (C) 1996 by Scott Laird
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL SCOTT LAIRD BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-******************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdio.h>
-#include <unistd.h>
-#ifdef TESTING
-#include <errno.h>
-#endif
-#include <sys/io.h>
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include "qcam.h"
-#include "qcam-Linux.h"
-
-int __inline__
-read_lpstatus (const struct qcam *q)
-{
- return inb (q->port + 1);
-}
-
-int
-read_lpcontrol (const struct qcam *q)
-{
- return inb (q->port + 2);
-}
-
-int
-read_lpdata (const struct qcam *q)
-{
- return inb (q->port);
-}
-
-void
-write_lpdata (const struct qcam *q, int d)
-{
- outb (d, q->port);
-}
-
-void
-write_lpcontrol (const struct qcam *q, int d)
-{
- outb (d, q->port + 2);
-}
-
-int
-enable_ports (const struct qcam *q)
-{
- if (q->port < 0x278)
- return 1; /* Better safe than sorry */
- if (q->port > 0x3bc)
- return 1;
- return (ioperm (q->port, 3, 1));
-}
-
-int
-disable_ports (const struct qcam *q)
-{
- return (ioperm (q->port, 3, 0));
-}
-
-/* Lock port. This is currently sub-optimal, and is begging to be
- fixed. It should check for dead locks. Any takers? */
-
-/* qc_lock_wait
- * This function uses POSIX fcntl-style locking on a file created in the
- * /tmp directory. Because it uses the Unix record locking facility, locks
- * are relinquished automatically on process termination, so "dead locks"
- * are not a problem. (FYI, the lock file will remain after process
- * termination, but this is actually desired so that the next process need
- * not re-creat(2)e it... just lock it.)
- * The wait argument indicates whether or not this funciton should "block"
- * waiting for the previous lock to be relinquished. This is ideal so that
- * multiple processes (eg. qcam) taking "snapshots" can peacefully coexist.
- * - Dave Plonka (plonka@carroll1.cc.edu)
- */
-int
-qc_lock_wait (struct qcam *q, int wait)
-{
-#if 1
- static struct flock sfl;
-
- if (-1 == q->fd) { /* we've yet to open the lock file */
- static char lockfile[128];
-
- sprintf (lockfile, LOCALSTATEDIR "LOCK.qcam.0x%x", q->port);
- if (-1 == (q->fd = open (lockfile, O_WRONLY | O_CREAT, 0666))) {
- perror ("open");
- return 1;
- }
-#ifdef TESTING
- fprintf (stderr, "%s - %d: %s open(2)ed\n", __FILE__, __LINE__, lockfile);
-#endif
-
- /* initialize the l_type memver to lock the file exclusively */
- sfl.l_type = F_WRLCK;
- }
-#ifdef TESTING
- if (0 != fcntl (q->fd, F_SETLK, &sfl)) /* non-blocking set lock */
-#else
- if (0 != fcntl (q->fd, wait ? F_SETLKW : F_SETLK, &sfl))
-#endif
- {
-#ifdef TESTING
- perror ("fcntl");
- if (EAGAIN != errno || !wait)
- return 1;
-
- fprintf (stderr, "%s - %d: waiting for exclusive lock on fd %d...\n",
- __FILE__, __LINE__, q->fd);
-
- if (0 != fcntl (q->fd, F_SETLKW, &sfl)) /* "blocking" set lock */
-#endif
- {
- perror ("fcntl");
- return 1;
- }
- }
-#ifdef TESTING
- fprintf (stderr, "%s - %d: fd %d locked exclusively\n", __FILE__, __LINE__,
- q->fd);
-#endif
-
-#else
- char lockfile[128], tmp[128];
- struct stat statbuf;
-
- sprintf (lockfile, LOCALSTATEDIR "/LOCK.qcam.0x%x", q->port);
- sprintf (tmp, "%s-%d", lockfile, getpid ());
-
- if ((creat (tmp, 0) == -1) ||
- (link (tmp, lockfile) == -1) ||
- (stat (tmp, &statbuf) == -1) || (statbuf.st_nlink == 1)) {
-#ifdef DEBUGQC
- perror ("QuickCam Locked");
- if (unlink (tmp) == -1)
- perror ("Error unlinking temp file.");
-#else
- unlink (tmp);
-#endif
- return 1;
- }
-
- unlink (tmp);
- if (chown (lockfile, getuid (), getgid ()) == -1)
- perror ("Chown problems");
-#endif
-
- return 0;
-}
-
-int
-qc_lock (struct qcam *q)
-{
-#if 1
- return qc_lock_wait (q, 1 /*wait */ );
-#else
- return qc_lock_wait (q, 0 /*don't wait */ );
-#endif
-}
-
-/* Unlock port */
-
-int
-qc_unlock (struct qcam *q)
-{
- static struct flock sfl;
-
-#if 1
- if (-1 == q->fd) { /* port was not locked */
- return 1;
- }
-
- /* clear the exclusive lock */
- sfl.l_type = F_UNLCK;
- if (0 != fcntl (q->fd, F_SETLK, &sfl)) {
- perror ("fcntl");
- return 1;
- }
-#ifdef TESTING
- fprintf (stderr, "%s - %d: fd %d unlocked\n", __FILE__, __LINE__, q->fd);
-#endif
-
-#else
- char lockfile[128];
-
- sprintf (lockfile, LOCALSTATEDIR "/LOCK.qcam.0x%x", q->port);
- unlink (lockfile); /* What would I do with an error? */
-#endif
-
- return 0;
-}
-
-
-/* Probe for camera. Returns 0 if found, 1 if not found, sets
- q->port.*/
-
-int
-qc_probe (struct qcam *q)
-{
- int ioports[] = { 0x378, 0x278, 0x3bc, 0 };
- int i = 0;
-
- /* Attempt to get permission to access IO ports. Must be root */
-
- while (ioports[i] != 0) {
- q->port = ioports[i++];
-
- if (qc_open (q)) {
- perror ("Can't get I/O permission");
- exit (1);
- }
-
- if (qc_detect (q)) {
- fprintf (stderr, "QuickCam detected at 0x%x\n", q->port);
- qc_close (q);
- return (0);
- } else
- qc_close (q);
- }
-
- return 1;
-}
-
-
-/* THIS IS UGLY. I need a short delay loop -- somthing well under a
-millisecond. Unfortunately, adding 2 usleep(1)'s to qc_command slowed
-it down by a factor of over 1000 over the same loop with 2
-usleep(0)'s, and that's too slow -- qc_start was taking over a second
-to run. This seems to help, but if anyone has a good
-speed-independent pause routine, please tell me. -- Scott */
-
-void
-qc_wait (int val)
-{
- int i;
-
- while (val--)
- for (i = 0; i < 50000; i++);
-}
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