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511 lines
13 KiB
511 lines
13 KiB
/*
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* $Id$
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*
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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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* BSD/386-specific drive control routines.
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*/
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static char plat_bsd386_id[] = "$Id$";
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#if defined(__bsdi__) || defined(__bsdi)
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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 <unistd.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include "include/wm_config.h"
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/*
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* The following is included from the Linux module. However, I didn't
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* see a check here if the CD to be ejected is mounted...
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*/
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#if defined(BSD_MOUNTTEST)
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#include <mntent.h>
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#endif
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#include <sys/time.h>
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#include <string.h>
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#include <cdrom.h>
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#ifdef SOUNDBLASTER
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# include <sys/soundcard.h>
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#endif
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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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* Since we can't sense the drive type with libcdrom anyway, and since the
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* library doesn't provide "pause" or "resume" functions, use the daux field
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* to point to the frame number at which we paused.
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*/
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struct pause_info
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{
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int frame;
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int endframe;
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};
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#define PAUSE_FRAME (((struct pause_info *) d->daux)->frame)
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#define END_FRAME (((struct pause_info *) d->daux)->endframe)
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#define CUR_CD ((struct cdinfo *) d->aux)
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void *malloc();
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#ifdef SOUNDBLASTER
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int min_volume = 0;
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int max_volume = 100;
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int min_volume_drive = 10; /* Toshiba drive does low values. */
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int max_volume_drive = 255;
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#else
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int min_volume = 10;
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int max_volume = 255;
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#endif
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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. We can't determine the drive type under BSD/386.
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*-----------------------------------------------------------------------*/
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int
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wmcd_open(struct wm_drvie *d)
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{
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void *aux = NULL, *daux = NULL;
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int fd = -1;
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if (d->aux) /* 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 (aux=%d)]\n", d->aux);
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return (0);
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}
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if ((aux = cdopen(d->cd_device)) == NULL)
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{
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fprintf(stderr, "No cdrom found by libcdrom\n");
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return (-6);
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}
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if ((daux = malloc(sizeof(struct pause_info))) == NULL)
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return (-1);
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#ifdef SOUNDBLASTER
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fd = open("/dev/mixer", O_RDWR, 0);
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#endif
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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->aux = aux;
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d->daux = daux;
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d->fd = fd;
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PAUSE_FRAME = 0;
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END_FRAME = 0;
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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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int tries = 0;
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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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tries++;
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} while ( (status != 0) && (tries < 10) );
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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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/* Don't know how to do SCSI passthrough... */
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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); /* close mixer if open */
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d->fd = -1;
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cdclose( d->aux ); /* close the cdrom drive! */
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d->aux = NULL;
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free(d->daux);
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d->daux = NULL;
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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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#define DOPOS \
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*pos = status.abs_frame; \
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*track = status.track_num; \
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*index = status.index_num
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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 cdstatus status;
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extern enum wm_cd_modes cur_cdmode;
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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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/* Is the device open? */
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if (d->aux == NULL)
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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 (cdstatus (CUR_CD, &status) < 0)
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{
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*mode = WM_CDM_TRACK_DONE; /* waiting for next track. */
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return (0);
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}
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switch (status.state)
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{
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case cdstate_playing:
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*mode = WM_CDM_PLAYING;
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DOPOS;
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break;
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case cdstate_stopped:
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/* the MITSUMI drive doesn't have a "paused" state,
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so it always comes here and not to the paused section.
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The PAUSE_FRAME stuff below (in gen_pause())
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fakes out the paused state. */
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if (oldmode == WM_CDM_PLAYING)
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{
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*mode = WM_CDM_TRACK_DONE;
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break;
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} else if (cur_cdmode != WM_CDM_PAUSED) {
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*mode = WM_CDM_STOPPED;
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DOPOS;
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break;
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}
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/* fall through if paused */
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case cdstate_paused:
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/* the SCSI2 code in the cdrom library only pauses with
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cdstop(); it never truly stops a disc (until an in-progress
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play reaches the end). So it always comes here. */
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if (cur_cdmode == WM_CDM_STOPPED)
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{
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*mode = WM_CDM_STOPPED;
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DOPOS;
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break;
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}
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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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DOPOS;
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} else {
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*mode = WM_CDM_STOPPED;
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DOPOS;
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}
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break;
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default:
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*mode = WM_CDM_STOPPED;
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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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* 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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*tracks = CUR_CD->ntracks;
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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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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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*data = (CUR_CD->tracks[track - 1].control & 4) ? 1 : 0;
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*startframe = CUR_CD->tracks[track - 1].start_frame;
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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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*frames = CUR_CD->total_frames;
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return (0);
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} /* gen_get_cdlen() */
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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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END_FRAME = end;
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if (cdplay(d->aux, start, end) < 0)
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return (-1);
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else
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return (0);
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} /* gen_play() */
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/*--------------------------------------------------------------------*
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* Pause the CD. This is a bit of a trick since there's no cdpause()
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* function in the library. We fake it by saving the frame number
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* and stopping.
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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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struct cdstatus status;
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if (cdstatus(d->aux, &status) < 0)
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return (-1);
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if (status.state != cdstate_playing)
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PAUSE_FRAME = CUR_CD->tracks[0].start_frame;
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else
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PAUSE_FRAME = status.abs_frame;
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if (cdstop(d->aux) < 0)
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return (-1);
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return (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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int status;
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status = (d->play)(d, PAUSE_FRAME, END_FRAME);
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PAUSE_FRAME = 0;
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return (status);
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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 cdstop(d->aux);
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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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cdeject(d->aux);
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cdclose(d->aux);
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d->aux = NULL;
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free(d->daux);
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d->daux = NULL;
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if (d->fd >= 0)
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close(d->fd); /* close mixer */
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d->fd = -1;
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return (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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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 (!cdload(d->aux))
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return(0);
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return(-1);
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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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* 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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static int
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scale_volume(int vol, int max)
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{
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/* on Toshiba XM-3401B drive, and on soundblaster, this works fine. */
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return ((vol * (max_volume - min_volume)) / max + min_volume);
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} /* scale_volume() */
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/*---------------------------------------------------------------------------*
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* unscale_volume(cd_vol, max)
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*
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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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*
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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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*--------------------------------------------------------------------------*/
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static int
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unscale_volume(int cd_vol, int max)
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{
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int vol = 0, top = max, bot = 0, scaled;
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while (bot <= top)
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{
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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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break;
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if (cd_vol < scaled)
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top = vol - 1;
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else
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bot = vol + 1;
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}
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if (vol < 0)
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vol = 0;
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else if (vol > max)
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vol = max;
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return (vol);
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} /* unscale_volume() */
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/*---------------------------------------------------------------------*
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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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*---------------------------------------------------------------------*/
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int
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gen_set_volume(struct wm_drive *d, int left, int right)
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{
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int level;
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left = scale_volume(left, 100);
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right = scale_volume(right, 100);
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level = right << 8 | left;
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/* Send a Mixer IOCTL */
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if (d->fd >= 0)
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(void) ioctl(d->fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &level);
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#ifdef notnow
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/* NOTE: the cdvolume2() call is an addition to the cdrom library.
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Pick it up from the archives on bsdi.com */
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cdvolume2 (CUR_CD, left < 0 ? 0 : left > 255 ? 255 : left,
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right < 0 ? 0 : right > 255 ? 255 : right);
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#endif
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return (0);
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}
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/*---------------------------------------------------------------------*
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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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*---------------------------------------------------------------------*/
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int
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gen_get_volume(struct wm_drive *d, int *left, int *right)
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{
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int level;
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/* Most systems can't seem to do this... */
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*left = *right = -1;
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/* Send a Mixer IOCTL */
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if (d->fd >= 0) {
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if (ioctl(d->fd, MIXER_READ(SOUND_MIXER_VOLUME), &level) == 0) {
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*left = unscale_volume((level & 0xff) & 0xff, 100);
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*right = unscale_volume((level >> 8) & 0xff, 100);
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}
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}
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return (0);
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}
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/*------------------------------------------------------------------------*
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* gen_get_cdtext(drive, buffer, length)
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*------------------------------------------------------------------------*/
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int
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gen_get_cdtext(struct wm_drive *d, unsigned char **pp_buffer, int *p_buffer_length)
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{
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return -1; /* no SCSI, no CDTEXT */
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} /* gen_get_cdtext() */
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#endif /* __bsdi__ */
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