static PyObject*
CDImage_length_in_seconds(cdio_CDImage* self) {
msf_t first_track;
msf_t leadout;
int length;
cdio_get_track_msf(self->image, 1, &first_track);
cdio_get_track_msf(self->image, CDIO_CDROM_LEADOUT_TRACK, &leadout);
length = cdio_audio_get_msf_seconds(&leadout) -
cdio_audio_get_msf_seconds(&first_track);
return Py_BuildValue("i", length);
}
/*
Compute the CDDB disk ID for an Audio disk. This is a funny checksum
consisting of the concatenation of 3 things:
the sum of the decimal digits of sizes of all tracks,
the total length of the disk, and
the number of tracks.
*/
static unsigned long
cddb_discid(CdIo_t *p_cdio, int i_tracks)
{
int i,t,n=0;
msf_t start_msf;
msf_t msf;
for (i = 1; i <= i_tracks; i++) {
cdio_get_track_msf(p_cdio, i, &msf);
n += cddb_dec_digit_sum(msf_seconds(&msf));
}
cdio_get_track_msf(p_cdio, 1, &start_msf);
cdio_get_track_msf(p_cdio, CDIO_CDROM_LEADOUT_TRACK, &msf);
t = msf_seconds(&msf) - msf_seconds(&start_msf);
return ((n % 0xff) << 24 | t << 8 | i_tracks);
}
/*!
Return the starting LSN for track number
i_track in cdio. Tracks numbers start at 1.
The "leadout" track is specified either by
using i_track LEADOUT_TRACK or the total tracks+1.
CDIO_INVALID_LBA is returned on error.
*/
lsn_t
cdio_get_track_lsn(const CdIo_t *p_cdio, track_t i_track)
{
if (p_cdio == NULL) return CDIO_INVALID_LSN;
if (p_cdio->op.get_track_lba) {
return cdio_lba_to_lsn(p_cdio->op.get_track_lba (p_cdio->env, i_track));
} else {
msf_t msf;
if (cdio_get_track_msf(p_cdio, i_track, &msf))
return cdio_msf_to_lsn(&msf);
return CDIO_INVALID_LSN;
}
}
/*!
Return the starting LSN for track number
track_num in cdio. Tracks numbers start at 1.
The "leadout" track is specified either by
using track_num LEADOUT_TRACK or the total tracks+1.
CDIO_INVALID_LBA is returned on error.
*/
lsn_t
cdio_get_track_lsn(const CdIo *cdio, track_t track_num)
{
if (cdio == NULL) return CDIO_INVALID_LBA;
if (cdio->op.get_track_lba) {
return cdio_lba_to_lsn(cdio->op.get_track_lba (cdio->env, track_num));
} else {
msf_t msf;
if (cdio_get_track_msf(cdio, track_num, &msf))
return cdio_msf_to_lsn(&msf);
return CDIO_INVALID_LSN;
}
}
/*!
Return the starting LBA for track number
track_num in cdio. Tracks numbers start at 1.
The "leadout" track is specified either by
using track_num LEADOUT_TRACK or the total tracks+1.
CDIO_INVALID_LBA is returned on error.
*/
lba_t
cdio_get_track_lba(const CdIo_t *p_cdio, track_t i_track)
{
if (!p_cdio) return CDIO_INVALID_LBA;
if (p_cdio->op.get_track_lba) {
return p_cdio->op.get_track_lba (p_cdio->env, i_track);
} else {
msf_t msf;
if (p_cdio->op.get_track_msf)
if (cdio_get_track_msf(p_cdio, i_track, &msf))
return cdio_msf_to_lba(&msf);
return CDIO_INVALID_LBA;
}
}
static Cddb::Toc& GetToc(CdIo_t *cdio, Cddb::Toc& toc)
{
// Get lead-in
const track_t firstTrack = cdio_get_first_track_num(cdio);
lsn_t lsn0 = 0;
msf_t msf;
if (cdio_get_track_msf(cdio, firstTrack, &msf))
lsn0 = (msf.m * 60 + msf.s) * CDIO_CD_FRAMES_PER_SEC + msf.f;
const track_t lastTrack = cdio_get_last_track_num(cdio);
for (track_t t = firstTrack; t <= lastTrack + 1; ++t)
{
#if 0 // This would be better but the msf's returned are way off in libcdio 0.81
if (!cdio_get_track_msf(cdio, t, &msf))
break;
#else
lsn_t lsn = cdio_get_track_lsn(cdio, t);
if (s_lastAudioLsn && lsn > s_lastAudioLsn)
lsn = s_lastAudioLsn;
lsn += lsn0; // lead-in
std::div_t d = std::div(lsn, CDIO_CD_FRAMES_PER_SEC);
msf.f = d.rem;
d = std::div(d.quot, 60);
msf.s = d.rem;
msf.m = d.quot;
#endif
//LOG(VB_MEDIA, LOG_INFO, QString("Track %1 msf: %2:%3:%4").
// arg(t,2).arg(msf.m,2).arg(msf.s,2).arg(msf.f,2) );
toc.push_back(Cddb::Msf(msf.m, msf.s, msf.f));
if (TRACK_FORMAT_AUDIO != cdio_get_track_format(cdio, t))
break;
}
return toc;
}
/*! Read CD TOC and set CD information. */
static void
read_toc(CdIo_t *p_cdio)
{
track_t i;
i_first_track = cdio_get_first_track_num(p_cdio);
i_last_track = cdio_get_last_track_num(p_cdio);
i_tracks = cdio_get_num_tracks(p_cdio);
i_first_audio_track = i_first_track;
i_last_audio_track = i_last_track;
if ( CDIO_INVALID_TRACK == i_first_track ||
CDIO_INVALID_TRACK == i_last_track ) {
xperror("read toc header");
b_cd = false;
b_record = false;
} else {
b_cd = true;
i_data = 0;
for (i = i_first_track; i <= i_last_track+1; i++) {
if ( !cdio_get_track_msf(p_cdio, i, &(toc[i])) )
{
xperror("read toc entry");
b_cd = false;
return;
}
if ( TRACK_FORMAT_AUDIO != cdio_get_track_format(p_cdio, i) ) {
if ((i != i_last_track+1) ) {
i_data++;
if (i == i_first_track) {
if (i == i_last_track)
i_first_audio_track = CDIO_CDROM_LEADOUT_TRACK;
else
i_first_audio_track++;
}
}
}
}
b_record = true;
read_subchannel(p_cdio);
if (auto_mode && sub.audio_status != CDIO_MMC_READ_SUB_ST_PLAY)
play_track(1, CDIO_CDROM_LEADOUT_TRACK);
}
}
/** Read CD TOC and set CD information. */
static void
read_toc(CdIo_t *p_cdio)
{
track_t i;
action("read toc...");
memset(cd_info, 0, sizeof(cd_info));
title[0] = artist[0] = genre[0] = category[0] = year[0] = '\0';
i_first_track = cdio_get_first_track_num(p_cdio);
i_last_track = cdio_get_last_track_num(p_cdio);
i_tracks = cdio_get_num_tracks(p_cdio);
i_first_audio_track = i_first_track;
i_last_audio_track = i_last_track;
cdio_audio_get_volume(p_cdio, &audio_volume);
for (i_vol_port=0; i_vol_port<4; i_vol_port++) {
if (audio_volume.level[i_vol_port] > 0) break;
}
if ( CDIO_INVALID_TRACK == i_first_track ||
CDIO_INVALID_TRACK == i_last_track ) {
xperror("read toc header");
b_cd = false;
b_record = false;
i_last_display_track = CDIO_INVALID_TRACK;
} else {
b_cd = true;
i_data = 0;
get_disc_info(p_cdio);
for (i = i_first_track; i <= i_last_track+1; i++) {
int s;
if ( !cdio_get_track_msf(p_cdio, i, &(toc[i])) )
{
xperror("read toc entry");
b_cd = false;
return;
}
if ( TRACK_FORMAT_AUDIO == cdio_get_track_format(p_cdio, i) ) {
if (i != i_first_track)
{
s = cdio_audio_get_msf_seconds(&toc[i])
- cdio_audio_get_msf_seconds(&toc[i-1]);
snprintf(cd_info[i-1].length, sizeof(cd_info[0].length),
"%02d:%02d",
s / CDIO_CD_SECS_PER_MIN, s % CDIO_CD_SECS_PER_MIN);
}
} else {
if ((i != i_last_track+1) ) {
i_data++;
if (i == i_first_track) {
if (i == i_last_track)
i_first_audio_track = CDIO_CDROM_LEADOUT_TRACK;
else
i_first_audio_track++;
}
}
}
get_track_info(i);
}
b_record = true;
read_subchannel(p_cdio);
if (auto_mode && sub.audio_status != CDIO_MMC_READ_SUB_ST_PLAY)
play_track(1, CDIO_CDROM_LEADOUT_TRACK);
}
action("");
if (!b_all_tracks)
display_cdinfo(p_cdio, i_tracks, i_first_track);
}
/*!
Return the starting MSF (minutes/secs/frames) for track number
i_track in p_cdio.
@return true if things worked or false if there is no track entry.
*/
bool getMsf(/*out*/ msf_t &msf)
{
return cdio_get_track_msf(p_cdio, i_track,/*out*/ &msf);
}
