118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
#ifndef WM_CDDA_H
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#define WM_CDDA_H
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/*
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* $Id: wm_cdda.h,v 1.2 1999/02/14 09:50:46 dirk Exp $
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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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; /* see below */
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unsigned char track;
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unsigned char index;
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unsigned char minute;
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unsigned char second;
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unsigned char frame;
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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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};
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/*
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* cdda_block status codes.
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*/
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#define WMCDDA_ERROR 0 /* Couldn't read CDDA from disc */
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#define WMCDDA_OK 1 /* Read this block successfully (raw data) */
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#define WMCDDA_PLAYED 2 /* Just played the block in question */
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#define WMCDDA_STOPPED 3 /* Block data invalid; we've just stopped */
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#define WMCDDA_ACK 4 /* Acknowledgement of command from parent */
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#define WMCDDA_DONE 5 /* Chunk of data is done playing */
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#define WMCDDA_EJECTED 6 /* Disc ejected or offline */
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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 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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# undef BUILD_CDDA
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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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# else
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# undef BUILD_CDDA
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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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#ifdef 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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#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 !WM_LITTLE_ENDIAN
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# if !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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#endif /* WM_CDDA_H */
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