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SDL_syscdrom.c
176 lines (145 loc) · 4.1 KB
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SDL_syscdrom.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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
BERO
bero@geocities.co.jp
based on win32/SDL_syscdrom.c by
Sam Lantinga
slouken@libsdl.org
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
/* Functions for system-level CD-ROM audio control */
#include <stdlib.h>
#include <stdio.h>
#include <dc/cdrom.h>
#include <dc/spu.h>
#include "SDL_error.h"
#include "SDL_cdrom.h"
#include "SDL_syscdrom.h"
/* The system-dependent CD control functions */
static const char *SDL_SYS_CDName(int drive);
static int SDL_SYS_CDOpen(int drive);
static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
static int SDL_SYS_CDPause(SDL_CD *cdrom);
static int SDL_SYS_CDResume(SDL_CD *cdrom);
static int SDL_SYS_CDStop(SDL_CD *cdrom);
static int SDL_SYS_CDEject(SDL_CD *cdrom);
static void SDL_SYS_CDClose(SDL_CD *cdrom);
int SDL_SYS_CDInit(void)
{
/* Fill in our driver capabilities */
SDL_CDcaps.Name = SDL_SYS_CDName;
SDL_CDcaps.Open = SDL_SYS_CDOpen;
SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
SDL_CDcaps.Status = SDL_SYS_CDStatus;
SDL_CDcaps.Play = SDL_SYS_CDPlay;
SDL_CDcaps.Pause = SDL_SYS_CDPause;
SDL_CDcaps.Resume = SDL_SYS_CDResume;
SDL_CDcaps.Stop = SDL_SYS_CDStop;
SDL_CDcaps.Eject = SDL_SYS_CDEject;
SDL_CDcaps.Close = SDL_SYS_CDClose;
return(0);
}
static const char *SDL_SYS_CDName(int drive)
{
return "/cd";
}
static int SDL_SYS_CDOpen(int drive)
{
return(drive);
}
#define TRACK_CDDA 0
static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
{
CDROM_TOC toc;
int ret,i;
ret = cdrom_read_toc(&toc,0);
if (ret!=ERR_OK) {
return -1;
}
cdrom->numtracks = TOC_TRACK(toc.last)-TOC_TRACK(toc.first)+1;
for(i=0;i<cdrom->numtracks;i++) {
unsigned long entry = toc.entry[i];
cdrom->track[i].id = i+1;
cdrom->track[i].type = (TOC_CTRL(toc.entry[i])==TRACK_CDDA)?SDL_AUDIO_TRACK:SDL_DATA_TRACK;
cdrom->track[i].offset = TOC_LBA(entry)-150;
cdrom->track[i].length = TOC_LBA((i+1<toc.last)?toc.entry[i+1]:toc.dunno)-TOC_LBA(entry);
}
return 0;
}
/* Get CD-ROM status */
static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
{
CDstatus status;
int ret,dc_status,disc_type;
ret = cdrom_get_status(&dc_status,&disc_type);
if (ret!=ERR_OK) return CD_ERROR;
switch(dc_status) {
// case CD_STATUS_BUSY:
case CD_STATUS_PAUSED:
return CD_PAUSED;
case CD_STATUS_STANDBY:
return CD_STOPPED;
case CD_STATUS_PLAYING:
return CD_PLAYING;
// case CD_STATUS_SEEKING:
// case CD_STATUS_SCANING:
case CD_STATUS_OPEN:
case CD_STATUS_NO_DISC:
return CD_TRAYEMPTY;
default:
return CD_ERROR;
}
}
/* Start play */
static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
{
int ret = cdrom_cdda_play(start-150,start-150+length,1,CDDA_SECTORS);
return ret==ERR_OK?0:-1;
}
/* Pause play */
static int SDL_SYS_CDPause(SDL_CD *cdrom)
{
int ret=cdrom_cdda_pause();
return ret==ERR_OK?0:-1;
}
/* Resume play */
static int SDL_SYS_CDResume(SDL_CD *cdrom)
{
int ret=cdrom_cdda_resume();
return ret==ERR_OK?0:-1;
}
/* Stop play */
static int SDL_SYS_CDStop(SDL_CD *cdrom)
{
int ret=cdrom_spin_down();
return ret==ERR_OK?0:-1;
}
/* Eject the CD-ROM */
static int SDL_SYS_CDEject(SDL_CD *cdrom)
{
return -1;
}
/* Close the CD-ROM handle */
static void SDL_SYS_CDClose(SDL_CD *cdrom)
{
}
void SDL_SYS_CDQuit(void)
{
}