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144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
#ifndef WM_CDDA_H
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#define WM_CDDA_H
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/*
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* This file is part of WorkMan, the civilized CD player library
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* Copyright (C) 1991-1997 by Steven Grimm <koreth@midwinter.com>
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* Copyright (C) by Dirk Försterling <milliByte@DeathsDoor.com>
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* Copyright (C) 2004-2006 Alexander Kern <alex.kern@gmx.de>
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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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#include "wm_cdrom.h"
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#include "wm_config.h"
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#include "wm_struct.h"
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/*
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* cdda_block status codes.
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*/
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/*
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* Enable or disable CDDA building depending on platform capabilities, and
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* determine endianness based on architecture. (Gross!)
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*
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* For header-comfort, the macros LITTLE_ENDIAN and BIG_ENDIAN had to be
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* renamed. At least Linux does have bytesex.h and endian.h for easy
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* byte-order examination.
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*/
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#ifdef HAVE_MACHINE_ENDIAN_H
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#include <machine/endian.h>
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define WM_LITTLE_ENDIAN 1
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#define WM_BIG_ENDIAN 0
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#else
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#define WM_LITTLE_ENDIAN 0
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#define WM_BIG_ENDIAN 1
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#endif
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#elif defined(__sun) || defined(sun)
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# ifdef SYSV
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# include <sys/types.h>
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# include <sys/cdio.h>
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# ifndef CDROMCDDA
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# error what to do?
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# endif
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# ifdef i386
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# define WM_LITTLE_ENDIAN 1
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# define WM_BIG_ENDIAN 0
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# else
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# define WM_BIG_ENDIAN 1
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# define WM_LITTLE_ENDIAN 0
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# endif
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# endif
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/* Linux only allows definition of endianness, because there's no
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* standard interface for CDROM CDDA functions that aren't available
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* if there is no support.
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*/
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#elif defined(__linux__)
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/*# include <bytesex.h>*/
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# include <endian.h>
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/*
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* XXX could this be a problem? The results are only 0 and 1 because
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* of the ! operator. How about other linux compilers than gcc ?
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*/
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# define WM_LITTLE_ENDIAN !(__BYTE_ORDER - __LITTLE_ENDIAN)
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# define WM_BIG_ENDIAN !(__BYTE_ORDER - __BIG_ENDIAN)
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#elif defined WORDS_BIGENDIAN
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#define WM_LITTLE_ENDIAN 0
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#define WM_BIG_ENDIAN 1
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#else
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#define WM_LITTLE_ENDIAN 1
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#define WM_BIG_ENDIAN 0
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#endif
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/*
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* The following code shouldn't take effect now.
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* In 1998, the WorkMan platforms don't support __PDP_ENDIAN
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* architectures.
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*
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*/
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#if !defined(WM_LITTLE_ENDIAN)
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# if !defined(WM_BIG_ENDIAN)
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# error yet unsupported architecture
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foo bar this is to stop the compiler.
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# endif
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#endif
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/*
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* Information about a particular block of CDDA data.
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*/
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struct cdda_block {
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unsigned char status;
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unsigned char track;
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unsigned char index;
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unsigned char reserved;
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int frame;
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char *buf;
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long buflen;
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};
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struct cdda_device {
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int fd;
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int cdda_slave;
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const char *devname;
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unsigned char status;
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unsigned char track;
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unsigned char index;
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unsigned char command;
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int frame;
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int frames_at_once;
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/* Average volume levels, for level meters */
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unsigned char lev_chan0;
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unsigned char lev_chan1;
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/* Current volume setting (0-255) */
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unsigned char volume;
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/* Current balance setting (0-255, 128 = balanced) */
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unsigned char balance;
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struct cdda_block *blocks;
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int numblocks;
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struct cdda_proto *proto;
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};
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#endif /* WM_CDDA_H */
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