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-rw-r--r--kscd/libwm/plat_openbsd.c545
1 files changed, 545 insertions, 0 deletions
diff --git a/kscd/libwm/plat_openbsd.c b/kscd/libwm/plat_openbsd.c
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+/*
+ * $Id$
+ *
+ * This file is part of WorkMan, the civilized CD player library
+ * (c) 1991-1997 by Steven Grimm (original author)
+ * (c) by Dirk Försterling (current 'author' = maintainer)
+ * The maintainer can be contacted by his e-mail address:
+ * milliByte@DeathsDoor.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * OpenBSD-specific drive control routines. (Based on plat_freebsd.c)
+ *
+ * Michael Shalayeff, 7/24/96
+ * Todd Pfaff, 3/20/94
+ *
+ */
+
+#if defined(__OpenBSD__) || defined(__OpenBSD)
+
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <fcntl.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include "include/wm_config.h"
+#include "include/wm_cdrom.h"
+#include "include/wm_helpers.h"
+
+/* this is for glibc 2.x which defines the ust structure in ustat.h not stat.h */
+#ifdef __GLIBC__
+#include <sys/ustat.h>
+#endif
+
+#include <sys/time.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/cdio.h>
+#include <sys/scsiio.h>
+#include <scsi/scsi_all.h>
+#include <scsi/cd.h>
+#include <scsi/scsi_cd.h>
+
+#include "include/wm_struct.h"
+#include "include/wm_cdtext.h"
+
+#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
+
+void *malloc();
+
+int min_volume = 10;
+int max_volume = 255;
+
+/*
+ * Initialize the drive. A no-op for the generic driver.
+ */
+int
+gen_init(struct wm_drive *d)
+{
+ return (0);
+} /* gen_init() */
+
+
+char *cds[] = {"/dev/rcd0c", "/dev/rcd1c", "/dev/acd0c", NULL};
+
+
+/*
+ * Open the CD device and figure out what kind of drive is attached.
+ */
+int
+wmcd_open(struct wm_drive *d)
+{
+ int fd;
+ static int warned = 0;
+ char vendor[32] = WM_STR_GENVENDOR;
+ char model[32] = WM_STR_GENMODEL;
+ char rev[32] = WM_STR_GENREV;
+ int i;
+
+ if (d->fd >= 0) /* Device already open? */
+ {
+ wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_open(): [device is open (fd=%d)]\n", d->fd);
+ return (0);
+ }
+
+ if (d->cd_device == NULL)
+ {
+ for (i = 0; cds[i] != NULL; i++)
+ {
+ d->cd_device = cds[i];
+ d->fd = open(d->cd_device, O_RDONLY);
+ if (d->fd >= 0)
+ break;
+ }
+ }
+ else
+ d->fd = open(d->cd_device, O_RDONLY);
+ if (d->fd < 0)
+ {
+ if (errno == EIO)
+ /* No CD in drive. */
+ return 1;
+ else
+ return -errno;
+ }
+
+ /* Now fill in the relevant parts of the wm_drive structure. */
+ fd = d->fd;
+
+ find_drive_struct(vendor, model, rev);
+
+ (d->init)(d);
+
+ d->fd = fd;
+
+ return (0);
+} /* wmcd_open() */
+
+/*
+ * Re-Open the device if it is open.
+ */
+int
+wmcd_reopen( struct wm_drive *d )
+{
+ int status;
+
+ do {
+ wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "wmcd_reopen\n");
+ status = gen_close( d );
+ wm_susleep( 1000 );
+ wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "calling wmcd_open()\n");
+ status = wmcd_open( d ); /* open it as usual */
+ wm_susleep( 1000 );
+ } while ( status != 0 );
+ return status;
+} /* wmcd_reopen() */
+
+/*
+ * Send an arbitrary SCSI command to a device.
+ *
+ */
+int
+wm_scsi(struct wm_drive *d, unsigned char *cdb,
+ int cdblen, void *retbuf, int retbuflen, int getreply)
+{
+ return (-1);
+} /* wm_scsi() */
+
+int
+gen_close( struct wm_drive *d )
+{
+ if(d->fd != -1) {
+ wm_lib_message(WM_MSG_LEVEL_DEBUG|WM_MSG_CLASS, "closing the device\n");
+ close(d->fd);
+ }
+ d->fd = -1;
+ return 0;
+}
+
+/*
+ * Get the current status of the drive: the current play mode, the absolute
+ * position from start of disc (in frames), and the current track and index
+ * numbers if the CD is playing or paused.
+ */
+int
+gen_get_drive_status(struct wm_drive *d, int oldmode,
+ int *mode, int *pos, int *track, int *index)
+{
+ struct ioc_read_subchannel sc;
+ struct cd_sub_channel_info scd;
+
+ /* If we can't get status, the CD is ejected, so default to that. */
+ *mode = WM_CDM_EJECTED;
+
+ sc.address_format = CD_MSF_FORMAT;
+ sc.data_format = CD_CURRENT_POSITION;
+ sc.track = 0;
+ sc.data_len = sizeof(scd);
+ sc.data = (struct cd_sub_channel_info *)&scd;
+
+ /* Is the device open? */
+ if (d->fd < 0)
+ {
+ switch (wmcd_open(d)) {
+ case -1: /* error */
+ return (-1);
+
+ case 1: /* retry */
+ return (0);
+ }
+ }
+
+ if (ioctl(d->fd, CDIOCREADSUBCHANNEL, &sc))
+ {
+ /* we need to release the device so the kernel will notice
+ reloaded media */
+ (void) close(d->fd);
+ d->fd = -1;
+ return (0); /* ejected */
+ }
+
+ switch (scd.header.audio_status)
+ {
+ case CD_AS_PLAY_IN_PROGRESS:
+ *mode = WM_CDM_PLAYING;
+ dopos:
+ *pos = scd.what.position.absaddr.msf.minute * 60 * 75 +
+ scd.what.position.absaddr.msf.second * 75 +
+ scd.what.position.absaddr.msf.frame;
+ *track = scd.what.position.track_number;
+ *index = scd.what.position.index_number;
+ break;
+
+ case CD_AS_PLAY_PAUSED:
+ if (oldmode == WM_CDM_PLAYING || oldmode == WM_CDM_PAUSED)
+ {
+ *mode = WM_CDM_PAUSED;
+ goto dopos;
+ }
+ else
+ *mode = WM_CDM_STOPPED;
+ break;
+
+ case CD_AS_PLAY_COMPLETED:
+ *mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
+ break;
+
+ case CD_AS_NO_STATUS:
+ case 0:
+ *mode = WM_CDM_STOPPED;
+ break;
+ }
+
+ return (0);
+} /* gen_get_drive_status() */
+
+/*
+ * Get the number of tracks on the CD.
+ */
+int
+gen_get_trackcount(struct wm_drive *d, int *tracks)
+{
+ struct ioc_toc_header hdr;
+
+ if (ioctl(d->fd, CDIOREADTOCHEADER, &hdr) == -1)
+ return (-1);
+
+ *tracks = hdr.ending_track - hdr.starting_track + 1;
+ return (0);
+} /* gen_get_trackcount() */
+
+/*
+ * Get the start time and mode (data or audio) of a track.
+ *
+ * XXX - this should get cached, but that means keeping track of ejects.
+ */
+int
+gen_get_trackinfo(struct wm_drive *d, int track, int *data, int *startframe)
+{
+ struct ioc_read_toc_entry toc;
+ struct cd_toc_entry toc_buffer;
+
+ bzero((char *)&toc_buffer, sizeof(toc_buffer));
+ toc.address_format = CD_MSF_FORMAT;
+ toc.starting_track = track;
+ toc.data_len = sizeof(toc_buffer);
+ toc.data = &toc_buffer;
+
+ if (ioctl(d->fd, CDIOREADTOCENTRYS, &toc))
+ return (-1);
+
+ *data = ((toc_buffer.control & 0x4) != 0);
+
+ *startframe = toc_buffer.addr.msf.minute*60*75 +
+ toc_buffer.addr.msf.second * 75 +
+ toc_buffer.addr.msf.frame;
+
+ return (0);
+} /* gen_get_trackinfo() */
+
+/*
+ * Get the number of frames on the CD.
+ */
+int
+gen_get_cdlen(struct wm_drive *d, int *frames)
+{
+ int tmp;
+ struct ioc_toc_header hdr;
+ int status;
+
+#define LEADOUT 0xaa /* see scsi.c. what a hack! */
+ return gen_get_trackinfo(d, LEADOUT, &tmp, frames);
+} /* gen_get_cdlen() */
+
+/*
+ * Play the CD from one position to another (both in frames.)
+ */
+int
+gen_play(struct wm_drive *d, int start, int end)
+{
+ struct ioc_play_msf msf;
+
+ msf.start_m = start / (60*75);
+ msf.start_s = (start % (60*75)) / 75;
+ msf.start_f = start % 75;
+ msf.end_m = end / (60*75);
+ msf.end_s = (end % (60*75)) / 75;
+ msf.end_f = end % 75;
+
+ if (ioctl(d->fd, CDIOCSTART))
+ return (-1);
+
+ if (ioctl(d->fd, CDIOCPLAYMSF, &msf))
+ return (-2);
+
+ return (0);
+} /* gen_play() */
+
+/*
+ * Pause the CD.
+ */
+int
+gen_pause(struct wm_drive *d)
+{
+ return (ioctl(d->fd, CDIOCPAUSE));
+} /* gen_pause() */
+
+/*
+ * Resume playing the CD (assuming it was paused.)
+ */
+int
+gen_resume(struct wm_drive *d)
+{
+ return (ioctl(d->fd, CDIOCRESUME));
+} /* gen_resume() */
+
+/*
+ * Stop the CD.
+ */
+int
+gen_stop(struct wm_drive *d)
+{
+ return (ioctl(d->fd, CDIOCSTOP));
+} /* gen_stop() */
+
+/*
+ * Eject the current CD, if there is one.
+ */
+int
+gen_eject(struct wm_drive *d)
+{
+ /* On some systems, we can check to see if the CD is mounted. */
+ struct stat stbuf;
+ struct statfs buf;
+ int rval;
+
+ if (fstat(d->fd, &stbuf) != 0)
+ return (-2);
+
+ /* Is this a mounted filesystem? */
+ if (fstatfs(stbuf.st_rdev, &buf) == 0)
+ return (-3);
+
+ rval = ioctl(d->fd, CDIOCALLOW);
+ if (rval == 0)
+ rval = ioctl(d->fd, CDIOCEJECT);
+ if (rval == 0)
+ rval = ioctl(d->fd, CDIOCPREVENT);
+ if (rval == 0)
+ rval = close(d->fd);
+ if (rval == 0)
+ d->fd = -1;
+ return rval;
+} /* gen_eject() */
+
+/*----------------------------------------*
+ * Close the CD tray
+ *
+ * Please edit and send changes to
+ * milliByte@DeathsDoor.com
+ *----------------------------------------*/
+
+int
+gen_closetray(struct wm_drive *d)
+{
+#ifdef CAN_CLOSE
+ if(!close(d->fd))
+ {
+ d->fd=-1;
+ return(wmcd_reopen(d));
+ } else {
+ return(-1);
+ }
+#else
+ /* Always succeed if the drive can't close */
+ return(0);
+#endif /* CAN_CLOSE */
+} /* gen_closetray() */
+
+/*
+ * scale_volume(vol, max)
+ *
+ * Return a volume value suitable for passing to the CD-ROM drive. "vol"
+ * is a volume slider setting; "max" is the slider's maximum value.
+ *
+ * On Sun and DEC CD-ROM drives, the amount of sound coming out the jack
+ * increases much faster toward the top end of the volume scale than it
+ * does at the bottom. To make up for this, we make the volume scale look
+ * sort of logarithmic (actually an upside-down inverse square curve) so
+ * that the volume value passed to the drive changes less and less as you
+ * approach the maximum slider setting. The actual formula looks like
+ *
+ * (max^2 - (max - vol)^2) * (max_volume - min_volume)
+ * v = --------------------------------------------------- + min_volume
+ * max^2
+ *
+ * If your system's volume settings aren't broken in this way, something
+ * like the following should work:
+ *
+ * return ((vol * (max_volume - min_volume)) / max + min_volume);
+ */
+static int
+scale_volume(int vol, int max)
+{
+ return ((vol * (max_volume - min_volume)) / 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 ioc_vol vol;
+
+ if (left < 0) /* don't laugh, I saw this happen once! */
+ left = 0;
+ if (right < 0)
+ right = 0;
+ left = scale_volume(left, 100);
+ right = scale_volume(right, 100);
+
+ bzero((char *)&vol, sizeof(vol));
+
+ vol.vol[LEFT_PORT] = left;
+ vol.vol[RIGHT_PORT] = right;
+
+ if (ioctl(d->fd, CDIOCSETVOL, &vol))
+ 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 ioc_vol vol;
+
+ if (d->fd >= 0)
+ {
+ bzero((char *)&vol, sizeof(vol));
+
+ if (ioctl(d->fd, CDIOCGETVOL, &vol))
+ *left = *right = -1;
+ else
+ {
+ *left = unscale_volume(vol.vol[LEFT_PORT], 100);
+ *right = unscale_volume(vol.vol[RIGHT_PORT], 100);
+ }
+ }
+ else
+ *left = *right = -1;
+
+ return (0);
+} /* gen_get_volume() */
+
+/*------------------------------------------------------------------------*
+ * gen_get_cdtext(drive, buffer, lenght)
+ *------------------------------------------------------------------------*/
+
+int
+gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_lenght)
+{
+ return -1; /* no SCSI, no CDTEXT */
+} /* gen_get_cdtext() */
+
+#endif
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