summaryrefslogtreecommitdiffabout
path: root/tools/midi2f0.cc
Side-by-side diff
Diffstat (limited to 'tools/midi2f0.cc') (more/less context) (show whitespace changes)
-rw-r--r--tools/midi2f0.cc151
1 files changed, 151 insertions, 0 deletions
diff --git a/tools/midi2f0.cc b/tools/midi2f0.cc
new file mode 100644
index 0000000..dc95be6
--- a/dev/null
+++ b/tools/midi2f0.cc
@@ -0,0 +1,151 @@
+#include <getopt.h>
+#include <iostream>
+#include <algorithm>
+using namespace std;
+#include <konforka/exception.h>
+#include <midillo/SMF.h>
+using namespace midillo;
+
+#include "config.h"
+#define PHEADER PACKAGE " " VERSION " - midi2f0 - convert to midi format 0"
+#define PCOPY "Copyright (c) 2006 Klever Group"
+
+static void usage(const char *p) {
+ cerr << PHEADER << endl
+ << PCOPY << endl << endl
+ << " " << p << " [options] [<input-file>[ <output-file>]]" << endl << endl
+ << " -h, --help" << endl
+ << " --usage display this text" << endl
+ << " -V, --version display version number" << endl
+ << " -L, --license show license" << endl;
+}
+
+static bool MTrk_is_empty(const MTrk_t& t) {
+ return
+ t.events.empty()
+ || t.events.front().message.is_meta(meta_EOT);
+}
+
+static bool MTrk_deltat_lt(const MTrk_t& a,const MTrk_t& b) {
+ // we assume tracks aren't empty
+ return a.events.front().deltat < b.events.front().deltat;
+}
+
+static bool event_has_nonzero_deltat_or_is_EOT(const event_t& e) {
+ return e.deltat!=0 || e.message.is_meta(meta_EOT);
+}
+
+main(int argc,char **argv) {
+ try {
+ while(true) {
+ static struct option opts[] = {
+ { "help", no_argument, 0, 'h' },
+ { "usage", no_argument, 0, 'h' },
+ { "version", no_argument, 0, 'V' },
+ { "license", no_argument, 0, 'L' },
+ { NULL, 0, 0, 0 }
+ };
+ int c = getopt_long(argc,argv,"hVL",opts,NULL);
+ if(c==-1)
+ break;
+ switch(c) {
+ case 'h':
+ usage(*argv);
+ exit(0);
+ break;
+ case 'V':
+ cerr << VERSION << endl;
+ exit(0);
+ break;
+ case 'L':
+ extern const char *COPYING;
+ cerr << COPYING << endl;
+ exit(0);
+ break;
+ default:
+ cerr << "Huh??" << endl;
+ break;
+ }
+ }
+ const char *infile = "-";
+ if(optind<argc)
+ infile = argv[optind++];
+ const char *oufile = "-";
+ if(optind<argc)
+ oufile = argv[optind++];
+ if(optind<argc) {
+ usage(*argv);
+ exit(1);
+ }
+ SMF_t in(infile);
+ if(in.mthd.fmt==MThd_t::fmt_0) {
+ cerr << "File is already SMF 0" << endl;
+ in.save(oufile);
+ }else if(in.mthd.fmt==MThd_t::fmt_1) {
+ cerr << "Converting from SMF 1 to SMF 0" << endl;
+ SMF_t ou;
+ ou.mthd = in.mthd;
+ ou.mthd.fmt = MThd_t::fmt_0; ou.mthd.ntracks = 1;
+ ou.tracks.resize(1);
+ MTrk_t& mtrk = ou.tracks.front();
+ events_t& evs = mtrk.events;
+ for(;;) {
+ // Cleaning up empty tracks
+ in.tracks.erase(
+ remove_if(
+ in.tracks.begin(),in.tracks.end(),
+ MTrk_is_empty),
+ in.tracks.end() );
+ if(in.tracks.empty())
+ break;
+ // Find the least deltat
+ unsigned long mindt = min_element(
+ in.tracks.begin(), in.tracks.end(),
+ MTrk_deltat_lt )->events.front().deltat;
+ int t=0;
+ bool reset = false;
+ for(SMF_t::tracks_t::iterator i=in.tracks.begin();i!=in.tracks.end();++i) {
+ if(i->events.front().deltat > mindt) {
+ i->events.front().deltat-=mindt;
+ }else{
+ do{
+ evs.splice(
+ evs.end(),
+ i->events,i->events.begin() );
+ if(reset)
+ evs.back().deltat = 0;
+ else
+ reset = true;
+ events_t::iterator lze=find_if(
+ i->events.begin(),i->events.end(),
+ event_has_nonzero_deltat_or_is_EOT );
+ evs.splice(
+ evs.end(),
+ i->events,i->events.begin(),lze );
+ }while( (!MTrk_is_empty(*i)) && i->events.front().deltat==0 );
+ }
+ }
+ }
+ event_t& eot = *evs.append_event();
+ eot.deltat=0;
+ eot.message.status = status_system_meta;
+ eot.message.meta_status = meta_EOT;
+ ou.save(oufile);
+ }else if(in.mthd.fmt==MThd_t::fmt_2) {
+ // TODO
+ cerr << "Not implemented" << endl;
+ }else{
+ cerr << "Unknown MIDI file format" << endl;
+ }
+ return 0;
+ }catch(konforka::exception& e) {
+ cerr << "Oops... Konforka exception:" << endl
+ << " what: " << e.what() << endl
+ << " where: " << e.where() << endl;
+ return 1;
+ }catch(exception& e) {
+ cerr << "Oops... Exception:" << endl
+ << " what: " << e.what() << endl;
+ return 1;
+ }
+}