PhLtcWriter::PhLtcWriter(PhTimeCodeType tcType) :
PhAudioOutput(),
_tcType(tcType),
_encoder(NULL)
{
_encoder = ltc_encoder_create(1, 1, LTC_TV_625_50, LTC_USE_DATE);
#warning /// @todo fix this in the settings
switch (tcType) {
case PhTimeCodeType25:
ltc_encoder_set_bufsize(_encoder, 48000, 25.0);
//ltc_encoder_reinit(_encoder, 48000, tcType, fps==25?LTC_TV_625_50:LTC_TV_525_60, LTC_USE_DATE);
ltc_encoder_reinit(_encoder, 48000, 25.0, LTC_TV_625_50, LTC_USE_DATE);
break;
case PhTimeCodeType24:
case PhTimeCodeType2398:
ltc_encoder_set_bufsize(_encoder, 48000, 24.0);
ltc_encoder_reinit(_encoder, 48000, tcType, LTC_TV_525_60, LTC_USE_DATE);
break;
case PhTimeCodeType2997:
ltc_encoder_set_bufsize(_encoder, 48000, 29.97);
ltc_encoder_reinit(_encoder, 48000, tcType, LTC_TV_525_60, LTC_USE_DATE);
break;
case PhTimeCodeType30:
ltc_encoder_set_bufsize(_encoder, 48000, 30);
ltc_encoder_reinit(_encoder, 48000, tcType, LTC_TV_525_60, LTC_USE_DATE);
break;
default:
break;
}
ltc_encoder_set_volume(_encoder, -18.0);
}
LTCEncoder* ltc_encoder_create(double sample_rate, double fps, enum LTC_TV_STANDARD standard, int flags) {
if (sample_rate < 1)
return NULL;
LTCEncoder* e = (LTCEncoder*) calloc(1, sizeof(LTCEncoder));
if (!e)
return NULL;
/*-3.0 dBFS default */
e->enc_lo = 38;
e->enc_hi = 218;
e->bufsize = 1 + ceil(sample_rate / fps);
e->buf = (ltcsnd_sample_t*) calloc(e->bufsize, sizeof(ltcsnd_sample_t));
if (!e->buf) {
free(e);
return NULL;
}
ltc_frame_reset(&e->f);
ltc_encoder_reinit(e, sample_rate, fps, standard, flags);
return e;
}
