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-rw-r--r--kscd/libwm/plat_ultrix.c663
1 files changed, 663 insertions, 0 deletions
diff --git a/kscd/libwm/plat_ultrix.c b/kscd/libwm/plat_ultrix.c
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+++ b/kscd/libwm/plat_ultrix.c
@@ -0,0 +1,663 @@
+/*
+ * $Id$
+ *
+ * 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
+ *
+ *
+ * ULTRIX 4.2 drive control routines.
+ */
+
+static char plat_ultrix_id[] = "$Id$";
+
+#if defined(ultrix) || defined(__ultrix)
+
+
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <ustat.h>
+#include <string.h>
+#include <sys/rzdisk.h>
+#include <sys/cdrom.h>
+
+#include "include/wm_config.h"
+#include "include/wm_cdtext.h"
+#include "include/wm_struct.h"
+
+#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
+
+/*
+ * This structure will be filled with the TOC header and all entries.
+ * Ultrix doesn't seem to allow getting single TOC entries.
+ * - Chris Ross (cross@eng.umd.edu)
+ */
+struct cd_toc_header_and_entries
+{
+ struct cd_toc_header cdth;
+ struct cd_toc_entry cdte[CDROM_MAX_TRACK+1];
+};
+
+void *malloc();
+char *strchr();
+
+int min_volume = 128;
+int max_volume = 255;
+
+char * ultrix_cd_device = NULL;
+/*
+ * fgetline()
+ *
+ * Simulate fgets, but joining continued lines in the output of uerf.
+ */
+
+#define BUF_SIZE 85 /* Max length of a (real) line */
+
+char *
+fgetline( FILE *fp )
+{
+ static char *retval = NULL;
+ static char holdbuf[BUF_SIZE + 1];
+ char tmp[BUF_SIZE + 1];
+ char *stmp;
+
+ if (!retval)
+ {
+ retval = malloc(BUF_SIZE * 3); /* 3 lines can be joined */
+ if (!retval)
+ return(NULL);
+ else
+ *retval = '\0';
+ }
+
+ if (*holdbuf)
+ {
+ strcpy(retval, holdbuf);
+ retval[strlen(retval)-1] = '\0';
+ memset(holdbuf, 0, BUF_SIZE+1);
+ }
+
+ while (fgets(tmp, BUF_SIZE, fp))
+ {
+ stmp = tmp + strspn(tmp, " \t");
+ if (*stmp == '_')
+ { /* Continuation line */
+ retval[strlen(retval)-1] = '\0'; /* Trim off C/R */
+ strcat(retval, stmp+1);
+ } else {
+ if (*retval)
+ {
+ strcpy(holdbuf, tmp);
+ holdbuf[strlen(holdbuf)-1] = -1;
+ return retval;
+ } else { /* First line read, keep reading */
+ strcat(retval, stmp);
+ retval[strlen(retval)-1] = '\0';
+ }
+ }
+ }
+ return NULL;
+} /* fgetline() */
+
+/*
+ * find_cdrom
+ *
+ * Determine the name of the CD-ROM device.
+ *
+ * Read through the boot records (via a call to uerf) and find the SCSI
+ * address of the CD-ROM. If the "CDROM" environment variable is set,
+ * use that instead.
+ */
+const char*
+find_cdrom()
+{
+ char *data;
+ FILE *uerf;
+ int fds[2];
+ int pid;
+ const char* device = NULL;
+
+ device = getenv("CDROM");
+
+ if (device != NULL)
+ {
+ if(strncmp("/dev/", device, 5) || strstr(device, "/../"))
+ return NULL;
+ }
+
+ pipe(fds);
+
+ if ((pid = fork()) == 0)
+ {
+ close(fds[0]);
+ dup2(fds[1], 1);
+ execl("/etc/uerf", "uerf", "-R", "-r", "300", (void *)0);
+ execl("/usr/sbin/uerf", "uerf", "-R", "-r", "300", (void *)0);
+ return NULL; /* _exit(1); */
+ } else if (pid < 0) {
+ perror("fork");
+ return NULL; /* exit(1); */
+ }
+
+ close(fds[1]);
+ uerf = fdopen(fds[0], "r");
+
+ while (data = fgetline(uerf))
+ if (strstr(data, "RRD42"))
+ {
+ char *device_p;
+
+ ultrix_cd_device = (char *)malloc(sizeof("/dev/rrz##c"));
+ strcpy(ultrix_cd_device, "/dev/r");
+ device_p = strstr(data, "rz");
+ device_p[(int)(strchr(device_p, ' ') - device_p)] = '\0';
+ strcat(ultrix_cd_device, device_p);
+ strcat(ultrix_cd_device, "c");
+ device = ultrix_cd_device;
+ break;
+ }
+
+ fclose(uerf);
+
+ if (device == NULL)
+ {
+ fprintf(stderr, "No cdrom (RRD42) is installed on this system\n");
+ return NULL; /* exit(1); */
+ }
+
+ kill(pid, 15);
+ (void)wait((int *)NULL);
+ return device;
+} /* find_cdrom() */
+
+/*
+ * initialize the drive. a no-op for the generic driver.
+ */
+int
+gen_init( struct wm_drive *d )
+{
+ return (0);
+} /* gen_init() */
+
+
+/*
+ * 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;
+
+ 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)
+ d->cd_device = find_cdrom();
+
+ d->fd = open(d->cd_device, 0);
+ if (d->fd < 0)
+ {
+ if (errno == EACCES)
+ {
+ return -EACCES;
+ }
+ else if (errno != EINTR)
+ {
+ return( -6 );
+ }
+
+ /* No CD in drive. */
+ return (1);
+ }
+
+ /* Now fill in the relevant parts of the wm_drive structure. */
+ find_drive_struct("", "", "");
+ d->fd = fd;
+
+ (d->init)(d);
+
+ 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 )
+{
+ /* ULTRIX doesn't have a SCSI passthrough interface, does it? */
+ 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 cd_sub_channel sc;
+ struct cd_subc_channel_data scd;
+
+ /* If we can't get status, the CD is ejected, so default to that. */
+ *mode = WM_CDM_EJECTED;
+
+ sc.sch_address_format = CDROM_MSF_FORMAT;
+ sc.sch_data_format = CDROM_CURRENT_POSITION;
+ sc.sch_track_number = 0;
+ sc.sch_alloc_length = sizeof(scd);
+ sc.sch_buffer = (caddr_t)&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, CDROM_READ_SUBCHANNEL, &sc))
+ return (0); /* ejected */
+
+ switch (scd.scd_header.sh_audio_status)
+ {
+ case AS_PLAY_IN_PROGRESS:
+ *mode = WM_CDM_PLAYING;
+dopos:
+ *pos = scd.scd_position_data.scp_absaddr.msf.m_units * 60 * 75 +
+ scd.scd_position_data.scp_absaddr.msf.s_units * 75 +
+ scd.scd_position_data.scp_absaddr.msf.f_units;
+ *track = scd.scd_position_data.scp_track_number;
+ *index = scd.scd_position_data.scp_index_number;
+ break;
+
+ case 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 AS_PLAY_COMPLETED:
+ *mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
+ break;
+
+ case AS_NO_STATUS:
+ *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 cd_toc_header hdr;
+
+ if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
+ return (-1);
+
+ *tracks = hdr.th_ending_track;
+
+ 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 cd_toc toc;
+ struct cd_toc_header hdr;
+ struct cd_toc_header_and_entries toc_buffer;
+
+ if (ioctl(d->fd, CDROM_TOC_HEADER, &hdr))
+ return (-1);
+
+ bzero((char *)&toc_buffer, sizeof(toc_buffer));
+ toc.toc_address_format = CDROM_MSF_FORMAT;
+ toc.toc_starting_track = 0;
+ toc.toc_alloc_length = (u_short)(((hdr.th_data_len1 << 8) +
+ hdr.th_data_len0) & 0xfff) + 2;
+ toc.toc_buffer = (caddr_t)&toc_buffer;
+
+ if (ioctl(d->fd, CDROM_TOC_ENTRYS, &toc))
+ return (-1);
+
+ if (track == 0)
+ track = hdr.th_ending_track + 1;
+
+ *data = (toc_buffer.cdte[track-1].te_control & CDROM_DATA_TRACK) ? 1:0;
+ *startframe = toc_buffer.cdte[track - 1].te_absaddr.msf.m_units*60*75 +
+ toc_buffer.cdte[track - 1].te_absaddr.msf.s_units * 75 +
+ toc_buffer.cdte[track - 1].te_absaddr.msf.f_units;
+
+ 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;
+ return (gen_get_trackinfo(d, 0, &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 cd_play_audio_msf msf;
+
+ msf.msf_starting_M_unit = start / (60*75);
+ msf.msf_starting_S_unit = (start % (60*75)) / 75;
+ msf.msf_starting_F_unit = start % 75;
+ msf.msf_ending_M_unit = end / (60*75);
+ msf.msf_ending_S_unit = (end % (60*75)) / 75;
+ msf.msf_ending_F_unit = end % 75;
+
+ if (ioctl(d->fd, SCSI_START_UNIT))
+ return (-1);
+ if (ioctl(d->fd, CDROM_PLAY_MSF, &msf))
+ return (-2);
+
+ return (0);
+} /* gen_play() */
+
+/*
+ * Pause the CD.
+ */
+int
+gen_pause( struct wm_drive *d )
+{
+ return (ioctl(d->fd, CDROM_PAUSE_PLAY));
+} /* gen_pause() */
+
+/*
+ * Resume playing the CD (assuming it was paused.)
+ */
+int
+gen_resume( struct wm_drive *d )
+{
+ return (ioctl(d->fd, CDROM_RESUME_PLAY));
+} /* gen_resume() */
+
+/*
+ * Stop the CD.
+ */
+int
+gen_stop( struct wm_drive *d )
+{
+ return (ioctl(d->fd, SCSI_STOP_UNIT));
+} /* 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 ustat ust;
+
+ if (fstat(d->fd, &stbuf) != 0)
+ return (-2);
+
+ /* Is this a mounted filesystem? */
+ if (ustat(stbuf.st_rdev, &ust) == 0)
+ return (-3);
+
+ return (ioctl(d->fd, CDROM_EJECT_CADDY));
+} /* 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);
+ */
+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, 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
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-25 14:40:39 +0000