From 0c21a7a0d5b84dc6726462f0fbe51b8c32433262 Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Fri, 11 Aug 2006 16:01:56 +0000
Subject: initial commit into repository

---
(limited to 'tools/midi2f0.cc')

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;
+    }
+}
--
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