/* gstcdplay
 * Copyright (c) 2002 Charles Schmidt <cbschmid@uiuc.edu> 

 * 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 Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

gboolean cd_init(struct cd *cd,const gchar *device)
{
        struct cdrom_tochdr toc_header;
        struct cdrom_tocentry toc_entry;
        guint i;

        cd->fd = open(device,O_RDONLY | O_NONBLOCK);

        if (cd->fd == -1) {
                return FALSE;
        }

        /* get the toc header information */
        if (ioctl(cd->fd,CDROMREADTOCHDR,&toc_header) != 0) {
                close(cd->fd);
                cd->fd = -1;
                return FALSE;
        }

        /* read each entry in the toc header */
        for (i = 1; i <= toc_header.cdth_trk1; i++) {
                toc_entry.cdte_format = CDROM_MSF;
                toc_entry.cdte_track = i;

                if (ioctl(cd->fd,CDROMREADTOCENTRY,&toc_entry) != 0) {
                        close(cd->fd);
                        cd->fd = -1;
                        return FALSE;
                }

                cd->tracks[i].minute = toc_entry.cdte_addr.msf.minute;
                cd->tracks[i].second = toc_entry.cdte_addr.msf.second;
                cd->tracks[i].frame = toc_entry.cdte_addr.msf.frame;
                cd->tracks[i].data_track = (toc_entry.cdte_ctrl == CDROM_DATA_TRACK);
        }

        /* read the leadout */
        toc_entry.cdte_track = CDROM_LEADOUT;
        toc_entry.cdte_format = CDROM_MSF;
        if (ioctl(cd->fd,CDROMREADTOCENTRY,&toc_entry) != 0) {
                close(cd->fd);
                cd->fd = -1;
                return FALSE;
        }
        cd->tracks[LEADOUT].minute = toc_entry.cdte_addr.msf.minute;
        cd->tracks[LEADOUT].second = toc_entry.cdte_addr.msf.second;
        cd->tracks[LEADOUT].frame = toc_entry.cdte_addr.msf.frame;

        cd->num_tracks = toc_header.cdth_trk1;

        return TRUE;
}

gboolean cd_start(struct cd *cd,gint start_track,gint end_track)
{
        struct cdrom_msf msf;

        if (cd->fd == -1) {
                return FALSE;
        }

        cd_fix_track_range(cd,&start_track,&end_track);

        msf.cdmsf_min0 = cd->tracks[start_track].minute;
        msf.cdmsf_sec0 = cd->tracks[start_track].second;
        msf.cdmsf_frame0 = cd->tracks[start_track].frame;

        if (end_track == LEADOUT) {
                msf.cdmsf_min1 = cd->tracks[end_track].minute;
                msf.cdmsf_sec1 = cd->tracks[end_track].second;
                msf.cdmsf_frame1 = cd->tracks[end_track].frame;
        } else {
                msf.cdmsf_min1 = cd->tracks[end_track+1].minute;
                msf.cdmsf_sec1 = cd->tracks[end_track+1].second;
                msf.cdmsf_frame1 = cd->tracks[end_track+1].frame;
        }

        if (ioctl(cd->fd,CDROMPLAYMSF,&msf) != 0) {
                return FALSE;
        }

        return TRUE;
}

gboolean cd_pause(struct cd *cd)
{
        if (cd->fd == -1) {
                return FALSE;
        }

        if (ioctl(cd->fd,CDROMPAUSE,NULL) != 0) {
                return FALSE;
        }

        return TRUE;
}

gboolean cd_resume(struct cd *cd)
{
        if (cd->fd == -1) {
                return FALSE;
        }

        if (ioctl(cd->fd,CDROMRESUME,NULL) != 0) {
                return FALSE;
        }

        return TRUE;
}

gboolean cd_stop(struct cd *cd)
{
        if (cd->fd == -1) {
                return FALSE;
        }

        if (ioctl(cd->fd,CDROMSTOP,NULL) != 0) {
                return FALSE;
        }

        return TRUE;
}

/* -1 for error, 0 for not playing, 1 for playing */
CDStatus cd_status(struct cd *cd)
{
        struct cdrom_subchnl sub_channel;

        if (cd->fd == -1) {
                return -1;
        }

        sub_channel.cdsc_format = CDROM_MSF;

        if (ioctl(cd->fd,CDROMSUBCHNL,&sub_channel) != 0) {
                return -1;
        }

        switch (sub_channel.cdsc_audiostatus) {
                case CDROM_AUDIO_COMPLETED:
                        return CD_COMPLETED;
                        break;
                case CDROM_AUDIO_PLAY:
                case CDROM_AUDIO_PAUSED:
                        return CD_PLAYING;
                        break;
                case CDROM_AUDIO_ERROR:
                default:
                        return CD_ERROR;
        }
}

gint cd_current_track(struct cd *cd)
{
        struct cdrom_subchnl sub_channel;

        if (cd->fd == -1) {
                return -1;
        }

        sub_channel.cdsc_format = CDROM_MSF;

        if (ioctl(cd->fd,CDROMSUBCHNL,&sub_channel) != 0) {
                return -1;
        }


        return sub_channel.cdsc_trk;
}

gboolean cd_close(struct cd *cd)
{
        if (cd->fd == -1) {
                return TRUE;
        }

        if (close(cd->fd) != 0) {
                return FALSE;
        }

        cd->fd = -1;

        return TRUE;
}

