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675 lines
16 KiB
675 lines
16 KiB
/*
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* This file is part of WorkMan, the civilized CD player library
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* (c) 1991-1997 by Steven Grimm (original author)
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* (c) by Dirk Försterling (current 'author' = maintainer)
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* The maintainer can be contacted by his e-mail address:
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* milliByte@DeathsDoor.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*
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* OSF drive control routines.
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*/
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#if defined(__osf__) || defined(__osf)
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#include <errno.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <ustat.h>
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#include <string.h>
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/* #include <sys/rzdisk.h>
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#include <sys/cdrom.h> */
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#include <io/cam/rzdisk.h>
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#include <io/cam/cdrom.h>
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#include "include/wm_config.h"
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#include "include/wm_struct.h"
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#include "include/wm_helpers.h"
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#include "include/wm_cdtext.h"
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#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
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/*
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* This structure will be filled with the TOC header and all entries.
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* Ultrix doesn't seem to allow getting single TOC entries.
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* - Chris Ross (cross@eng.umd.edu)
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*/
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struct cd_toc_header_and_entries
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{
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struct cd_toc_header cdth;
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struct cd_toc_entry cdte[CDROM_MAX_TRACK+1];
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};
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void *malloc();
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char *strchr();
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int min_volume = 128;
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int max_volume = 255;
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static char* osf_cd_device = NULL;
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/*
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* fgetline()
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*
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* Simulate fgets, but joining continued lines in the output of uerf.
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*
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* platform specific internal function
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*
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*/
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#define BUF_SIZE 85 /* Max length of a (real) line */
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char *
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fgetline( FILE *fp )
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{
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static char *retval = NULL;
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static char holdbuf[BUF_SIZE + 1];
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char tmp[BUF_SIZE + 1];
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char *stmp;
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if (!retval)
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{
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retval = malloc(BUF_SIZE * 3); /* 3 lines can be joined */
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if (!retval)
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return(NULL);
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else
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*retval = '\0';
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}
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if (*holdbuf)
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{
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strcpy(retval, holdbuf);
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retval[strlen(retval)-1] = '\0';
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memset(holdbuf, 0, BUF_SIZE+1);
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}
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while (fgets(tmp, BUF_SIZE, fp))
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{
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stmp = tmp + strspn(tmp, " \t");
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if (*stmp == '_') { /* Continuation line */
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retval[strlen(retval)-1] = '\0'; /* Trim off C/R */
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strcat(retval, stmp+1);
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} else {
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if (*retval)
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{
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strcpy(holdbuf, tmp);
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holdbuf[strlen(holdbuf)-1] = -1;
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return retval;
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} else { /* First line read, keep reading */
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strcat(retval, stmp);
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retval[strlen(retval)-1] = '\0';
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}
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}
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}
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return NULL;
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} /* fgetline() */
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/*
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* find_cdrom
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*
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* Determine the name of the CD-ROM device.
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*
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* Read through the boot records (via a call to uerf) and find the SCSI
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* address of the CD-ROM.
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*/
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const char*
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find_cdrom()
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{
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char *data;
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FILE *uerf;
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int fds[2];
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int pid;
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extern char *getenv();
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const char *device = NULL;
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pipe(fds);
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device = getenv("CDROM");
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/*
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** the path of the device has to start w/ /dev
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** otherwise we are vulnerable to race conditions
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** Thomas Biege <thomas@suse.de>
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*/
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if ( device == NULL ||
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strncmp("/dev/", device, 5) ||
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strstr(device, "/../")
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)
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return NULL;
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if ((pid = fork()) == 0)
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{
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close(fds[0]);
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dup2(fds[1], 1);
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execl("/etc/uerf", "uerf", "-R", "-r", "300", (void *)0);
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execl("/usr/sbin/uerf", "uerf", "-R", "-r", "300", (void *)0);
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return NULL; /* _exit(1); */
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} else if (pid < 0) {
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perror("fork");
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return NULL;
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}
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close(fds[1]);
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uerf = fdopen(fds[0], "r");
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while (data = fgetline(uerf))
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if (strstr(data, "RRD42"))
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{
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char *device_p;
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osf_cd_device = (char *)malloc(sizeof("/dev/rrz##c"));
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strcpy(osf_cd_device, "/dev/r");
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device_p = strstr(data, "rz");
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device_p[(int)(strchr(device_p, ' ') - device_p)] = '\0';
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strcat(osf_cd_device, device_p);
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strcat(osf_cd_device, "c");
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device = osf_cd_device;
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break;
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}
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fclose(uerf);
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if (device == NULL)
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{
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fprintf(stderr,
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"No cdrom (RRD42) is installed on this system\n");
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return NULL;
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}
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kill(pid, 15);
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(void)wait((int *)NULL);
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return device;
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} /* find_cdrom() */
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/*
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* Initialize the drive. A no-op for the generic driver.
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*/
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int
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gen_init( struct wm_drive *d )
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{
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return (0);
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} /* gen_init() */
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/*
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* Open the CD device and figure out what kind of drive is attached.
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*/
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int
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wmcd_open( struct wm_drive *d )
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{
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int fd;
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static int warned = 0;
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if (d->fd >= 0) /* Device already open? */
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{
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): [device is open (fd=%d)]\n", d->fd);
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return (0);
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}
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if (d->cd_device == NULL)
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d->cd_device = find_cdrom();
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d->fd = open(d->cd_device, O_RDWR);
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if (d->fd < 0)
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{
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if (errno == EACCES)
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{
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return -EACCES;
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}
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else if (errno != EINTR)
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{
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return (-6);
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}
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/* No CD in drive. */
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return (1);
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}
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/* Now fill in the relevant parts of the wm_drive structure. */
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find_drive_struct("", "", "");
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d->fd = fd;
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(d->init)(d);
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return (0);
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} /* wmcd_open() */
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/*
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* Re-Open the device if it is open.
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*/
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int
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wmcd_reopen( struct wm_drive *d )
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{
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int status;
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do {
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen\n");
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status = gen_close( d );
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wm_susleep( 1000 );
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "calling wmcd_open()\n");
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status = wmcd_open( d ); /* open it as usual */
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wm_susleep( 1000 );
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} while ( status != 0 );
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return status;
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} /* wmcd_reopen() */
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/*
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* Send an arbitrary SCSI command to a device.
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*/
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int
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wm_scsi(struct wm_drive *d, unsigned char *cdb, int cdblen,
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void *retbuf, int retbuflen, int getreply)
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{
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/* OSF1 doesn't have a SCSI passthrough interface, does it? */
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return (-1);
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} /* wm_scsi() */
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int
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gen_close( struct wm_drive *d )
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{
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if(d->fd != -1) {
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "closing the device\n");
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close(d->fd);
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d->fd = -1;
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}
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return 0;
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}
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/*
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* Get the current status of the drive: the current play mode, the absolute
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* position from start of disc (in frames), and the current track and index
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* numbers if the CD is playing or paused.
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*/
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int
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gen_get_drive_status(struct wm_drive *d, int oldmode,
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int *mode, int *pos, int *track, int *index)
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{
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struct cd_sub_channel sc;
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struct cd_subc_channel_data scd;
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/* If we can't get status, the CD is ejected, so default to that. */
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*mode = WM_CDM_EJECTED;
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sc.sch_address_format = CDROM_MSF_FORMAT;
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sc.sch_data_format = CDROM_CURRENT_POSITION;
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sc.sch_track_number = 0;
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sc.sch_alloc_length = sizeof(scd);
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sc.sch_buffer = (caddr_t)&scd;
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/* Is the device open? */
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if (d->fd < 0)
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{
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switch (wmcd_open(d))
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{
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case -1: /* error */
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return (-1);
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case 1: /* retry */
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return (0);
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}
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}
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if (ioctl(d->fd, CDROM_READ_SUBCHANNEL, &sc))
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return (0); /* ejected */
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switch (scd.scd_header.sh_audio_status)
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{
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case AS_PLAY_IN_PROGRESS:
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*mode = WM_CDM_PLAYING;
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dopos:
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*pos = scd.scd_position_data.scp_absaddr.msf.m_units * 60 * 75 +
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scd.scd_position_data.scp_absaddr.msf.s_units * 75 +
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scd.scd_position_data.scp_absaddr.msf.f_units;
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*track = scd.scd_position_data.scp_track_number;
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*index = scd.scd_position_data.scp_index_number;
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break;
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case AS_PLAY_PAUSED:
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if (oldmode == WM_CDM_PLAYING || oldmode == WM_CDM_PAUSED)
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{
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*mode = WM_CDM_PAUSED;
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goto dopos;
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}
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else
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*mode = WM_CDM_STOPPED;
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break;
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case AS_PLAY_COMPLETED:
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*mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
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break;
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case AS_NO_STATUS:
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*mode = WM_CDM_STOPPED;
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break;
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default:
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abort();
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}
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return (0);
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} /* gen_get_drive_status() */
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/*
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* Play the CD from one position to another (both in frames.)
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*/
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int
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gen_play( struct wm_drive *d, int start, int end )
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{
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struct cd_play_audio_msf msf;
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msf.msf_starting_M_unit = start / (60*75);
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msf.msf_starting_S_unit = (start % (60*75)) / 75;
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msf.msf_starting_F_unit = start % 75;
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msf.msf_ending_M_unit = end / (60*75);
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msf.msf_ending_S_unit = (end % (60*75)) / 75;
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msf.msf_ending_F_unit = end % 75;
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if (ioctl(d->fd, SCSI_START_UNIT))
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return (-1);
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if (ioctl(d->fd, CDROM_PLAY_AUDIO_MSF, &msf))
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return (-2);
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return (0);
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} /* gen_play() */
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/*
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* Pause the CD.
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*/
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int
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gen_pause( struct wm_drive *d )
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{
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return (ioctl(d->fd, CDROM_PAUSE_PLAY, 0));
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} /* gen_pause() */
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/*
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* Resume playing the CD (assuming it was paused.)
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*/
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int
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gen_resume( struct wm_drive *d )
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{
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return (ioctl(d->fd, CDROM_RESUME_PLAY, 0));
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} /* gen_resume() */
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/*
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* Stop the CD.
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*/
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int
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gen_stop( struct wm_drive *d )
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{
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return (ioctl(d->fd, SCSI_STOP_UNIT, 0));
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} /* gen_stop() */
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/*
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* Eject the current CD, if there is one.
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*/
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int
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gen_eject(struct wm_drive *d)
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{
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/* On some systems, we can check to see if the CD is mounted. */
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struct stat stbuf;
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struct ustat ust;
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if (fstat(d->fd, &stbuf) != 0)
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return (-2);
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/* Is this a mounted filesystem? */
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if (ustat(stbuf.st_rdev, &ust) == 0)
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return (-3);
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return (ioctl(d->fd, CDROM_EJECT_CADDY, 0));
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} /* gen_eject() */
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/*----------------------------------------*
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* Close the CD tray
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*
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* Please edit and send changes to
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* milliByte@DeathsDoor.com
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*----------------------------------------*/
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int
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gen_closetray(struct wm_drive *d)
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{
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#ifdef CAN_CLOSE
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if(!close(d->fd))
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{
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d->fd=-1;
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return(wmcd_reopen(d));
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} else {
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return(-1);
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}
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#else
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/* Always succeed if the drive can't close */
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return(0);
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#endif /* CAN_CLOSE */
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} /* gen_closetray() */
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/*
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* Get the number of tracks on the CD.
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*/
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int
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gen_get_trackcount(struct wm_drive *d, int *tracks)
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{
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struct cd_toc_header hdr;
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if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
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return (-1);
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*tracks = hdr.th_ending_track;
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return (0);
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} /* gen_get_trackcount() */
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/*
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* Get the start time and mode (data or audio) of a track.
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*
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* XXX - this should get cached, but that means keeping track of ejects.
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*/
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int
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gen_get_trackinfo(struct wm_drive *d, int track, int *data, int *startframe)
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{
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struct cd_toc toc;
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struct cd_toc_header hdr;
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struct cd_toc_header_and_entries toc_buffer;
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if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
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return (-1);
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bzero((char *)&toc_buffer, sizeof(toc_buffer));
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toc.toc_address_format = CDROM_MSF_FORMAT;
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toc.toc_starting_track = 0;
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toc.toc_alloc_length = (u_short)(((hdr.th_data_len1 << 8) +
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hdr.th_data_len0) & 0xfff) + 2;
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toc.toc_buffer = (caddr_t)&toc_buffer;
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if (ioctl(d->fd, CDROM_TOC_ENTRYS, &toc))
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return (-1);
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if (track == 0)
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track = hdr.th_ending_track + 1;
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*data = (toc_buffer.cdte[track-1].te_control & CDROM_DATA_TRACK) ? 1:0;
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*startframe = toc_buffer.cdte[track - 1].te_absaddr.msf.m_units*60*75 +
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toc_buffer.cdte[track - 1].te_absaddr.msf.s_units * 75 +
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toc_buffer.cdte[track - 1].te_absaddr.msf.f_units;
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return (0);
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} /* gen_get_trackinfo() */
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/*
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* Get the number of frames on the CD.
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*/
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int
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gen_get_cdlen( struct wm_drive *d, int *frames )
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{
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int tmp;
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return (gen_get_trackinfo(d, 0, &tmp, frames));
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} /* gen_get_cdlen() */
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/*
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* scale_volume(vol, max)
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*
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* Return a volume value suitable for passing to the CD-ROM drive. "vol"
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* is a volume slider setting; "max" is the slider's maximum value.
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*
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* On Sun and DEC CD-ROM drives, the amount of sound coming out the jack
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* increases much faster toward the top end of the volume scale than it
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* does at the bottom. To make up for this, we make the volume scale look
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* sort of logarithmic (actually an upside-down inverse square curve) so
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* that the volume value passed to the drive changes less and less as you
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* approach the maximum slider setting. The actual formula looks like
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*
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* (max^2 - (max - vol)^2) * (max_volume - min_volume)
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* v = --------------------------------------------------- + min_volume
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* max^2
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*
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* If your system's volume settings aren't broken in this way, something
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* like the following should work:
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|
*
|
|
* return ((vol * (max_volume - min_volume)) / max + min_volume);
|
|
*/
|
|
scale_volume(int vol, int max)
|
|
{
|
|
return ((max * max - (max - vol) * (max - vol)) *
|
|
(max_volume - min_volume) / (max * max) + min_volume);
|
|
} /* scale_volume() */
|
|
|
|
/*
|
|
* unscale_volume(cd_vol, max)
|
|
*
|
|
* Given a value between min_volume and max_volume, return the volume slider
|
|
* value needed to achieve that value.
|
|
*
|
|
* Rather than perform floating-point calculations to reverse the above
|
|
* formula, we simply do a binary search of scale_volume()'s return values.
|
|
*/
|
|
static int
|
|
unscale_volume( int cd_vol, int max )
|
|
{
|
|
int vol = 0, top = max, bot = 0, scaled;
|
|
|
|
while (bot <= top)
|
|
{
|
|
vol = (top + bot) / 2;
|
|
scaled = scale_volume(vol, max);
|
|
if (cd_vol == scaled)
|
|
break;
|
|
if (cd_vol < scaled)
|
|
top = vol - 1;
|
|
else
|
|
bot = vol + 1;
|
|
}
|
|
|
|
if (vol < 0)
|
|
vol = 0;
|
|
else if (vol > max)
|
|
vol = max;
|
|
|
|
return (vol);
|
|
} /* unscale_volume() */
|
|
|
|
/*
|
|
* Set the volume level for the left and right channels. Their values
|
|
* range from 0 to 100.
|
|
*/
|
|
int
|
|
gen_set_volume(struct wm_drive *d, int left, int right)
|
|
{
|
|
struct cd_playback pb;
|
|
struct cd_playback_status ps;
|
|
struct cd_playback_control pc;
|
|
|
|
left = scale_volume(left, 100);
|
|
right = scale_volume(right, 100);
|
|
|
|
bzero((char *)&pb, sizeof(pb));
|
|
bzero((char *)&ps, sizeof(ps));
|
|
bzero((char *)&pc, sizeof(pc));
|
|
|
|
pb.pb_alloc_length = sizeof(ps);
|
|
pb.pb_buffer = (caddr_t)&ps;
|
|
|
|
if (ioctl(d->fd, CDROM_PLAYBACK_STATUS, &pb))
|
|
return (-1);
|
|
|
|
pc.pc_chan0_select = ps.ps_chan0_select;
|
|
pc.pc_chan0_volume = (left < CDROM_MIN_VOLUME) ?
|
|
CDROM_MIN_VOLUME : (left > CDROM_MAX_VOLUME) ?
|
|
CDROM_MAX_VOLUME : left;
|
|
pc.pc_chan1_select = ps.ps_chan1_select;
|
|
pc.pc_chan1_volume = (right < CDROM_MIN_VOLUME) ?
|
|
CDROM_MIN_VOLUME : (right > CDROM_MAX_VOLUME) ?
|
|
CDROM_MAX_VOLUME : right;
|
|
|
|
pb.pb_alloc_length = sizeof(pc);
|
|
pb.pb_buffer = (caddr_t)&pc;
|
|
|
|
if (ioctl(d->fd, CDROM_PLAYBACK_CONTROL, &pb))
|
|
return (-1);
|
|
|
|
return (0);
|
|
} /* gen_set_volume() */
|
|
|
|
|
|
/*
|
|
* Read the initial volume from the drive, if available. Each channel
|
|
* ranges from 0 to 100, with -1 indicating data not available.
|
|
*/
|
|
int
|
|
gen_get_volume( struct wm_drive *d, int *left, int *right )
|
|
{
|
|
struct cd_playback pb;
|
|
struct cd_playback_status ps;
|
|
|
|
bzero((char *)&pb, sizeof(pb));
|
|
bzero((char *)&ps, sizeof(ps));
|
|
|
|
pb.pb_alloc_length = sizeof(ps);
|
|
pb.pb_buffer = (caddr_t)&ps;
|
|
|
|
if (d->fd >= 0)
|
|
{
|
|
if (ioctl(d->fd, CDROM_PLAYBACK_STATUS, &pb))
|
|
*left = *right = -1;
|
|
else
|
|
{
|
|
*left = unscale_volume(ps.ps_chan0_volume, 100);
|
|
*right = unscale_volume(ps.ps_chan1_volume, 100);
|
|
}
|
|
}
|
|
else
|
|
*left = *right = -1;
|
|
|
|
return (0);
|
|
} /* gen_get_volume() */
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* gen_get_cdtext(drive, buffer, length)
|
|
*------------------------------------------------------------------------*/
|
|
|
|
int
|
|
gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_length)
|
|
{
|
|
return -1; /* no SCSI, no CDTEXT */
|
|
} /* gen_get_cdtext() */
|
|
|
|
|
|
#endif
|