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kichikuou
acd4dc239b
The semantics of `loop` parameter of start() is very confusing. Added comments in cdrom.h/midi.h to clarify the meaning.
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*
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* cdrom.h cdrom control
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* $Id: cdrom.h,v 1.14 2002/08/18 09:35:29 chikama Exp $ */
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#ifndef __CDROM_H__
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#define __CDROM_H__
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/*
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* CD-ROM へのアクセスが不安定な場合は次の定数を増やしてみて下さい
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*/
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/* ioctrole retry times */
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#define CDROM_IOCTL_RETRY_TIME 3
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/* ioctrole retry interval (100ms unit) */
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#define CDROM_IOCTL_RETRY_INTERVAL 1
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typedef struct {
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int t,m,s,f;
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} cd_time;
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struct _cdromdevice {
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int (* init)(char *);
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int (* exit)(void);
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// Play through the track loop times. If loop == 0, loops forever.
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int (* start)(int trk, int loop);
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int (* stop)(void);
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int (* getpos)(cd_time *);
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int (* setvol)(int);
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int (* getvol)(void);
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};
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typedef struct _cdromdevice cdromdevice_t;
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extern int cd_init(cdromdevice_t *);
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extern void cd_set_devicename(char *);
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#define CD_FPS 75
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#define FRAMES_TO_MSF(f, M,S,F) { \
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int value = f; \
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*(F) = value%CD_FPS; \
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value /= CD_FPS; \
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*(S) = value%60; \
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value /= 60; \
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*(M) = value; \
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}
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#define MSF_TO_FRAMES(M, S, F) ((M)*60*CD_FPS+(S)*CD_FPS+(F))
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#endif /* __CDROM_H__ */
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