/**

 * $Id: mmc.c 662 2008-03-02 11:38:08Z nkeynes $

 *

 * MMC host-side support functions.

 *

 * Copyright (c) 2008 Nathan Keynes.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 */

#include "gdrom/gddriver.h"

#include "gdrom/packet.h"

#define MSFTOLBA( m,s,f ) (f + (s*CD_FRAMES_PER_SECOND) + (m*CD_FRAMES_PER_MINUTE))

void mmc_make_read_cd_cmd( char *cmd, uint32_t real_sector, int mode )

{

    cmd[0] = 0xBE;

    cmd[1] = (mode & 0x0E) << 1;

    cmd[2] = (real_sector >> 24) & 0xFF;

    cmd[3] = (real_sector >> 16) & 0xFF;

    cmd[4] = (real_sector >> 8) & 0xFF;

    cmd[5] = real_sector & 0xFF;

    cmd[6] = 0;

    cmd[7] = 0;

    cmd[8] = 1;

    if( READ_CD_RAW(mode) ) {

        cmd[9] = 0xF0;

    } else {

        if( READ_CD_HEADER(mode) ) {

            cmd[9] = 0xA0;

        }

        if( READ_CD_SUBHEAD(mode) ) {

            cmd[9] |= 0x40;

        }

        if( READ_CD_DATA(mode) ) {

            cmd[9] |= 0x10;

        }

    }

}

void mmc_parse_toc2( gdrom_image_t disc, unsigned char *buf )

{

    int max_track = 0;

    int last_track = -1;

    int leadout = -1;

    int len = (buf[0] << 8) | buf[1];

    int session_type = -1;

    int i;

    for( i = 4; i<len; i+=11 ) {

        int session = buf[i];

        int adr = buf[i+1] >> 4;

        int point = buf[i+3];

        if( adr == 0x01 && point > 0 && point < 100 ) {

            /* Track info */

            int trackno = point-1;

            if( point > max_track ) {

                max_track = point;

            }

            disc->track[trackno].flags = (buf[i+1] & 0x0F) << 4;

            disc->track[trackno].session = session - 1;

            disc->track[trackno].lba = MSFTOLBA(buf[i+8],buf[i+9],buf[i+10]);

            if( disc->track[trackno].flags & TRACK_DATA ) {

                disc->track[trackno].mode = GDROM_MODE1;

            } else {

                disc->track[trackno].mode = GDROM_CDDA;

            }

            if( last_track != -1 ) {

                disc->track[last_track].sector_count = disc->track[trackno].lba -

                disc->track[last_track].lba;

            }

            last_track = trackno;

        } else switch( (adr << 8) | point ) {

        case 0x1A0: /* session info */

            if( buf[i+9] == 0x20 ) {

                session_type = IDE_DISC_CDROMXA;

            } else {

                session_type = IDE_DISC_CDROM;

            }

            disc->disc_type = session_type;

            break;

        case 0x1A2: /* leadout */

            leadout = MSFTOLBA(buf[i+8], buf[i+9], buf[i+10]);

            break;

        }

    }

    disc->track_count = max_track;

    if( leadout != -1 && last_track != -1 ) {

        disc->track[last_track].sector_count = leadout - disc->track[last_track].lba;

    }

}