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SMF: add a set_length() method which will place TrkEnd meta-events

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This commit is contained in:
Paul Davis 2024-10-22 14:35:31 -06:00
parent 769920d337
commit aa2fb8c1d4
2 changed files with 18 additions and 0 deletions
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16
libs/evoral/SMF.cc
View file

@ -34,6 +34,7 @@
#include "libsmf/smf.h" #include "libsmf/smf.h"
#include "temporal/tempo.h" #include "temporal/tempo.h"
#include "temporal/beats.h"
#include "evoral/Event.h" #include "evoral/Event.h"
#include "evoral/SMF.h" #include "evoral/SMF.h"
@ -528,6 +529,21 @@ SMF::end_write(string const & path)
fclose(f); fclose(f);
} }
void
SMF::set_length (Temporal::Beats const & b)
{
if (!_smf) {
return;
}
for (uint16_t n = 0; n < _smf->number_of_tracks; ++n) {
smf_track_t* trk = smf_get_track_by_number (_smf, n+1);
if (trk) {
smf_track_add_eot_pulses (trk, (int) floor (b.get_ticks() * ((double) ppqn() / Temporal::ticks_per_beat)));
}
}
}
double double
SMF::round_to_file_precision (double val) const SMF::round_to_file_precision (double val) const
{ {

2
libs/evoral/evoral/SMF.h
View file

@ -39,6 +39,7 @@ typedef smf_tempo_struct smf_tempo_t;
namespace Temporal { namespace Temporal {
class TempoMap; class TempoMap;
class Beats;
} }
namespace Evoral { namespace Evoral {
@ -89,6 +90,7 @@ public:
void end_write(std::string const &); void end_write(std::string const &);
void flush() {}; void flush() {};
void set_length (Temporal::Beats const &);
double round_to_file_precision (double val) const; double round_to_file_precision (double val) const;