| /* 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; |
| } |
| |