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* $Id: plat_openbsd.c,v 1.7 2001/04/10 17:34:52 dfoerste Exp $
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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 F�rsterling (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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* 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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* 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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* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* OpenBSD-specific drive control routines. (Based on plat_freebsd.c)
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* Michael Shalayeff, 7/24/96
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static char plat_openbsd[] = "$Id: plat_openbsd.c,v 1.7 2001/04/10 17:34:52 dfoerste Exp $";
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#if defined(__OpenBSD__) || defined(__OpenBSD)
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/param.h>
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#include "include/wm_config.h"
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/* this is for glibc 2.x which defines the ust structure in ustat.h not stat.h */
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#include <sys/ustat.h>
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#include <sys/ioctl.h>
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#include <sys/scsiio.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsi_cd.h>
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#include "include/wm_struct.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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extern char *cd_device;
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* Initialize the drive. A no-op for the generic driver.
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gen_init(struct wm_drive *d)
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* Open the CD device and figure out what kind of drive is attached.
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wmcd_open(struct wm_drive *d)
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static int warned = 0;
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char vendor[32] = WM_STR_GENVENDOR;
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char model[32] = WM_STR_GENMODEL;
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char rev[32] = WM_STR_GENREV;
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if (d->fd >= 0) /* Device already open? */
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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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if (cd_device == NULL)
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cd_device = DEFAULT_CD_DEVICE;
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d->fd = open(cd_device, 0);
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/* No CD in drive. */
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/* Now fill in the relevant parts of the wm_drive structure. */
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*d = *(find_drive_struct(vendor, model, rev));
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wm_drive_settype(vendor, model, rev);
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* Re-Open the device if it is open.
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wmcd_reopen( struct wm_drive *d )
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen\n");
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if (d->fd >= 0) /* Device really open? */
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wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "closing the device\n");
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status = close( d->fd ); /* close it! */
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/* we know, that the file is closed, do we? */
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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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} while ( status != 0 );
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} /* wmcd_reopen() */
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* Send an arbitrary SCSI command to a device.
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wm_scsi(struct wm_drive *d, unsigned char *cdb,
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int cdblen, void *retbuf, int retbuflen, int getreply)
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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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gen_get_drive_status(struct wm_drive *d, enum wm_cd_modes oldmode,
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enum wm_cd_modes *mode, int *pos, int *track, int *index)
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struct ioc_read_subchannel sc;
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struct cd_sub_channel_info 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.address_format = CD_MSF_FORMAT;
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sc.data_format = CD_CURRENT_POSITION;
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sc.data_len = sizeof(scd);
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sc.data = (struct cd_sub_channel_info *)&scd;
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/* Is the device open? */
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switch (wmcd_open(d)) {
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if (ioctl(d->fd, CDIOCREADSUBCHANNEL, &sc))
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/* we need to release the device so the kernel will notice
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return (0); /* ejected */
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switch (scd.header.audio_status)
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case CD_AS_PLAY_IN_PROGRESS:
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*mode = WM_CDM_PLAYING;
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*pos = scd.what.position.absaddr.msf.minute * 60 * 75 +
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scd.what.position.absaddr.msf.second * 75 +
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scd.what.position.absaddr.msf.frame;
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*track = scd.what.position.track_number;
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*index = scd.what.position.index_number;
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case CD_AS_PLAY_PAUSED:
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if (oldmode == WM_CDM_PLAYING || oldmode == WM_CDM_PAUSED)
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*mode = WM_CDM_PAUSED;
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*mode = WM_CDM_STOPPED;
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case CD_AS_PLAY_COMPLETED:
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*mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
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case CD_AS_NO_STATUS:
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*mode = WM_CDM_STOPPED;
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} /* gen_get_drive_status() */
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* Get the number of tracks on the CD.
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gen_get_trackcount(struct wm_drive *d, int tracks)
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struct ioc_toc_header hdr;
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if (ioctl(d->fd, CDIOREADTOCHEADER, &hdr) == -1)
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*tracks = hdr.ending_track - hdr.starting_track + 1;
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} /* gen_get_trackcount() */
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* Get the start time and mode (data or audio) of a track.
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* XXX - this should get cached, but that means keeping track of ejects.
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gen_get_trackinfo(struct wm_drive *d, int track, int *data, int *startframe)
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struct ioc_read_toc_entry toc;
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struct cd_toc_entry toc_buffer;
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bzero((char *)&toc_buffer, sizeof(toc_buffer));
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toc.address_format = CD_MSF_FORMAT;
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toc.starting_track = track;
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toc.data_len = sizeof(toc_buffer);
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toc.data = &toc_buffer;
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if (ioctl(d->fd, CDIOREADTOCENTRYS, &toc))
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*data = ((toc_buffer.control & 0x4) != 0);
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*startframe = toc_buffer.addr.msf.minute*60*75 +
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toc_buffer.addr.msf.second * 75 +
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toc_buffer.addr.msf.frame;
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} /* gen_get_trackinfo() */
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* Get the number of frames on the CD.
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gen_get_cdlen(struct wm_drive *d, int *frames)
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struct ioc_toc_header hdr;
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#define LEADOUT 0xaa /* see scsi.c. what a hack! */
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return gen_get_trackinfo(d, LEADOUT, &tmp, frames);
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} /* gen_get_cdlen() */
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* Play the CD from one position to another (both in frames.)
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gen_play(struct wm_drive *d, int start, int end)
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struct ioc_play_msf msf;
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msf.start_m = start / (60*75);
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msf.start_s = (start % (60*75)) / 75;
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msf.start_f = start % 75;
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msf.end_m = end / (60*75);
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msf.end_s = (end % (60*75)) / 75;
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msf.end_f = end % 75;
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if (ioctl(d->fd, CDIOCSTART))
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if (ioctl(d->fd, CDIOCPLAYMSF, &msf))
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gen_pause(struct wm_drive *d)
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return (ioctl(d->fd, CDIOCPAUSE));
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* Resume playing the CD (assuming it was paused.)
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gen_resume(struct wm_drive *d)
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return (ioctl(d->fd, CDIOCRESUME));
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gen_stop(struct wm_drive *d)
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return (ioctl(d->fd, CDIOCSTOP));
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* Eject the current CD, if there is one.
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gen_eject(struct wm_drive *d)
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/* On some systems, we can check to see if the CD is mounted. */
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if (fstat(d->fd, &stbuf) != 0)
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/* Is this a mounted filesystem? */
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if (fstatfs(stbuf.st_rdev, &buf) == 0)
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rval = ioctl(d->fd, CDIOCALLOW);
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rval = ioctl(d->fd, CDIOCEJECT);
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rval = ioctl(d->fd, CDIOCPREVENT);
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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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gen_closetray(struct wm_drive *d)
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return(wmcd_reopen(d));
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/* Always succeed if the drive can't close */
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#endif /* CAN_CLOSE */
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} /* gen_closetray() */
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* scale_volume(vol, max)
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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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* 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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* (max^2 - (max - vol)^2) * (max_volume - min_volume)
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* v = --------------------------------------------------- + min_volume
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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);
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scale_volume(int vol, int max)
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return ((vol * (max_volume - min_volume)) / max + min_volume);
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} /* scale_volume() */
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* unscale_volume(cd_vol, max)
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* Given a value between min_volume and max_volume, return the volume slider
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* value needed to achieve that value.
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* Rather than perform floating-point calculations to reverse the above
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* formula, we simply do a binary search of scale_volume()'s return values.
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unscale_volume(int cd_vol, int max)
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int vol = 0, top = max, bot = 0, scaled;
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vol = (top + bot) / 2;
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scaled = scale_volume(vol, max);
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if (cd_vol == scaled)
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} /* unscale_volume() */
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* Set the volume level for the left and right channels. Their values
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* range from 0 to 100.
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gen_set_volume(struct wm_drive *d, int left, int right)
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if (left < 0) /* don't laugh, I saw this happen once! */
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left = scale_volume(left, 100);
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right = scale_volume(right, 100);
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bzero((char *)&vol, sizeof(vol));
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vol.vol[LEFT_PORT] = left;
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vol.vol[RIGHT_PORT] = right;
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if (ioctl(d->fd, CDIOCSETVOL, &vol))
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} /* gen_set_volume() */
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* Read the initial volume from the drive, if available. Each channel
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* ranges from 0 to 100, with -1 indicating data not available.
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gen_get_volume(struct wm_drive *d, int *left, int *right)
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bzero((char *)&vol, sizeof(vol));
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if (ioctl(d->fd, CDIOCGETVOL, &vol))
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*left = unscale_volume(vol.vol[LEFT_PORT], 100);
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*right = unscale_volume(vol.vol[RIGHT_PORT], 100);
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} /* gen_get_volume() */
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/*------------------------------------------------------------------------*
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* gen_get_cdtext(drive, buffer, lenght)
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*------------------------------------------------------------------------*/
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gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_lenght)
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return -1; /* no SCSI, no CDTEXT */
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} /* gen_get_cdtext() */
added
removed
kscd/libwm/plat_openbsd.c
