src/cdrom/dc/SDL_syscdrom.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifdef SDL_CDROM_DC

/* Functions for system-level CD-ROM audio control */

#include <dc/cdrom.h>
#include <dc/spu.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.leadout_sector) -
            TOC_LBA(entry);
    }

    return 0;
}

/* Get CD-ROM status */
static CDstatus
SDL_SYS_CDStatus(SDL_CD * cdrom, int *position)
{
    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)
{

}

#endif /* SDL_CDROM_DC */
/* vi: set ts=4 sw=4 expandtab: */