bool NativePlayer::PrevTrack()
{
BYTE track = GetTrack() - 1;
if ( track < 1 ) track = GetNumberOfTracks();
if ( GetMode() == MCI_MODE_PLAY )
return PlayTrack( track );
else
return SeekTrack( track );
}
bool NativePlayer::NextTrack()
{
BYTE track = GetTrack() + 1;
BYTE total = GetNumberOfTracks();
if ( track > total )
track = 1;
if ( GetMode() == MCI_MODE_PLAY )
return PlayTrack( track );
else
return SeekTrack( track );
}
void
BL_CDEngine::Play(int32 aTrackNumber)
{
if (IsDeviceOpened()) {
if (GetState() == STATE_NO_DISC) {
return;
}
scsi_play_track lTrack;
if (aTrackNumber < 1) {
lTrack.start_track = 1;
} else if (aTrackNumber > 99) {
lTrack.start_track = 99;
} else {
lTrack.start_track = aTrackNumber;
}
// If first track is data track, we skip it.
GetContents();
if ((lTrack.start_track == 1) && (IsDataTrack(0))) {
// If this CD doesn't contain any audio tracks, then we don't play.
if (GetNumberOfTracks() <= 1) {
return;
}
lTrack.start_track = 2;
}
lTrack.start_index = 1;
lTrack.end_track = 99;
lTrack.end_index = 1;
status_t lResult = ioctl(mCurrentDevice, B_SCSI_PLAY_TRACK, &lTrack);
if (lResult != B_OK) {
}
}
}