static int control(stream_t *stream, int cmd, void *arg)
{
cdda_priv *p = stream->priv;
switch (cmd) {
case STREAM_CTRL_GET_NUM_TITLES:
{
*(unsigned int *)arg = p->cd->tracks;
return STREAM_OK;
}
case STREAM_CTRL_GET_NUM_CHAPTERS:
{
int start_track = get_track_by_sector(p, p->start_sector);
int end_track = get_track_by_sector(p, p->end_sector);
if (start_track == -1 || end_track == -1)
return STREAM_ERROR;
*(unsigned int *)arg = end_track + 1 - start_track;
return STREAM_OK;
}
case STREAM_CTRL_GET_CHAPTER_TIME:
{
int track = *(double *)arg;
int start_track = get_track_by_sector(p, p->start_sector);
int end_track = get_track_by_sector(p, p->end_sector);
track += start_track + 1;
if (track > end_track)
return STREAM_ERROR;
int64_t sector = p->cd->disc_toc[track].dwStartSector;
int64_t pos = sector * (CDIO_CD_FRAMESIZE_RAW + 1) - 1;
// Assume standard audio CD: 44.1khz, 2 channels, s16 samples
*(double *)arg = pos / (44100.0 * 2 * 2);
return STREAM_OK;
}
}
return STREAM_UNSUPPORTED;
}
static int control(stream_t *stream, int cmd, void *arg) {
cdda_priv* p = stream->priv;
switch(cmd) {
case STREAM_CTRL_GET_NUM_CHAPTERS:
{
int start_track = get_track_by_sector(p, p->start_sector);
int end_track = get_track_by_sector(p, p->end_sector);
*(unsigned int *)arg = end_track + 1 - start_track;
return STREAM_OK;
}
case STREAM_CTRL_SEEK_TO_CHAPTER:
{
int r;
unsigned int track = *(unsigned int *)arg;
int start_track = get_track_by_sector(p, p->start_sector);
int seek_sector;
track += start_track;
if (track >= p->cd->tracks) {
stream->eof = 1;
return STREAM_ERROR;
}
seek_sector = track <= 0 ? p->start_sector
: p->cd->disc_toc[track].dwStartSector;
r = seek(stream, seek_sector * CD_FRAMESIZE_RAW);
if (r)
return STREAM_OK;
break;
}
case STREAM_CTRL_GET_CURRENT_CHAPTER:
{
int start_track = get_track_by_sector(p, p->start_sector);
int cur_track = get_track_by_sector(p, p->sector);
*(unsigned int *)arg = cur_track - start_track;
return STREAM_OK;
}
}
return STREAM_UNSUPPORTED;
}
