wirtz
/
miditones
mirror of https://github.com/LenShustek/miditones.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #5 from blackketter/master

Browse Source 
Merge changes from miditones used in the Arduino/Teensy library (PaulStoffregen/Audio)
pull/9/head
Len Shustek 9 years ago
parent 4d81c61475 0051f25fd7
commit b6070573e9
2 changed files with 43 additions and 13 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 5
      Makefile
  2. 51
      miditones.c

5
Makefile
Unescape View File

@ -0,0 +1,5 @@
miditones: miditones.c
gcc -O2 -Wall -o miditones miditones.c
clean:
rm -f miditones

51
miditones.c
Unescape View File

@ -5,7 +5,7 @@
* Convert a MIDI file into a bytestream of notes
*
*
* (C) Copyright 2011,2013,2015, Len Shustek
* (C) Copyright 2011,2013,2015,2016 Len Shustek
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
@ -52,9 +52,11 @@
* Generate "const" for data initialization for compatibility with Arduino IDE v1.6.x.
* 23 January 2016, D. Blackketter, V1.8
* -Fix warnings and errors building on Mac OS X via "gcc miditones.c"
* 25 January 2016, D. Blackketter, Paul Stoffregen, V1.9
-Merge in velocity output option from Arduino/Teensy Audio Library
*/
#define VERSION "1.8"
#define VERSION "1.9"
/*--------------------------------------------------------------------------------
@ -146,6 +148,8 @@
* -kn Change the musical key of the output by n chromatic notes.
* -k-12 goes one octave down, -k12 goes one octave up, etc.
*
* -v Add velocity information to output
*
*
* ***** The score bytestream *****
*
@ -155,9 +159,10 @@
*
* If the high-order bit of the byte is 1, then it is one of the following commands:
*
* 9t nn Start playing note nn on tone generator t. Generators are numbered
* 9t nn [vv] Start playing note nn on tone generator t. Generators are numbered
* starting with 0. The notes numbers are the MIDI numbers for the chromatic
* scale, with decimal 60 being Middle C, and decimal 69 being Middle A (440 Hz).
* if the -v option is enabled, a second byte is added to indicate velocity
*
* 8t Stop playing the note on tone generator t.
*
@ -213,7 +218,7 @@ struct track_header {
#define DEFAULT_TONEGENS 6 /* default number of tone generators */
#define MAX_TRACKS 24 /* max number of MIDI tracks we will process */
bool loggen, logparse, parseonly, strategy1, strategy2, binaryoutput;
bool loggen, logparse, parseonly, strategy1, strategy2, binaryoutput, velocityoutput;
FILE *infile, *outfile, *logfile;
uint8_t *buffer, *hdrptr;
unsigned long buflen;
@ -235,7 +240,7 @@ struct tonegen_status { /* current status of a tone generator */
int note; /* what note is playing? */
}
tonegen [MAX_TONEGENS] = {
0};
{0}};
struct track_status { /* current processing point of a MIDI track */
uint8_t *trkptr; /* ptr to the next note change */
@ -245,11 +250,12 @@ struct track_status { /* current processing point of a MIDI track */
unsigned int preferred_tonegen; /* for strategy2: try to use this generator */
unsigned char cmd; /* CMD_xxxx next to do */
unsigned char note; /* for which note */
unsigned char velocity;
unsigned char last_event; /* the last event, for MIDI's "running status" */
bool tonegens[MAX_TONEGENS];/* which tone generators our notes are playing on */
}
track[MAX_TRACKS] = {
0};
{0}};
/* output bytestream commands, which are also stored in track_status.cmd */
@ -271,7 +277,7 @@ track[MAX_TRACKS] = {
void SayUsage(char *programName){
static char *usage[] = {
"Convert MIDI files to an Arduino PLAYTUNE bytestream",
"miditones [-p] [-lg] [-lp] [-s1] [-tn] <basefilename>",
"miditones [-p] [-lg] [-lp] [-s1] [-tn] [-v] <basefilename>",
" -p parse only, don't generate bytestream",
" -lp log input parsing",
" -lg log output generation",
@ -281,6 +287,7 @@ void SayUsage(char *programName){
" -b binary file output instead of C source text",
" -cn mask for which tracks to process, e.g. -c3 for only 0 and 1",
" -kn key shift in chromatic notes, positive or negative",
" -v include velocity data in play note commands",
"input file: <basefilename>.mid",
"output file: <basefilename>.bin or .c",
"log file: <basefilename>.log",
@ -314,6 +321,9 @@ int HandleOptions(int argc,char *argv[]) {
case 'B':
binaryoutput = true;
break;
case 'V':
velocityoutput = true;
break;
case 'S':
if (argv[i][2] == '1') strategy1 = true;
else if (argv[i][2] == '2') strategy2 = true;
@ -413,7 +423,7 @@ size_t miditones_strlcat(char *dst, const char *src, size_t siz) {
/* match a constant character sequence */
int charcmp (char *buf, char *match) {
int charcmp (const char *buf, const char *match) {
int len, i;
len = strlen (match);
for (i=0; i<len; ++i)
@ -501,7 +511,7 @@ void start_track (int tracknum) {
chk_bufdata(hdrptr, sizeof(struct track_header));
hdr = (struct track_header *) hdrptr;
if (!charcmp((char*)hdr->MTrk,"MTrk")) midi_error("Missing 'MTrk'", hdrptr);
if (!charcmp((char *)(hdr->MTrk),"MTrk")) midi_error("Missing 'MTrk'", hdrptr);
tracklen = rev_long(hdr->track_size);
if (logparse) fprintf (logfile, "\nTrack %d length %ld\n", tracknum, tracklen);
@ -640,6 +650,7 @@ note_off:
t->note = *t->trkptr++;
velocity = *t->trkptr++;
if (velocity == 0) /* some scores use note-on with zero velocity for off! */ goto note_off;
t->velocity = velocity;
if (logparse) fprintf (logfile, "note %02X on, chan %d, velocity %d\n", t->note, chan, velocity);
if ((1<<chan) & channel_mask) { // if we're processing this channel
t->cmd = CMD_PLAYNOTE;
@ -697,7 +708,7 @@ int main(int argc,char *argv[]) {
unsigned long earliest_time;
int notes_skipped = 0;
printf("MIDITONES V%s, (C) 2011,2015 Len Shustek\n", VERSION);
printf("MIDITONES V%s, (C) 2011,2015,2016 Len Shustek\n", VERSION);
printf("See the source code for license information.\n\n");
if (argc == 1) { /* no arguments */
SayUsage(argv[0]);
@ -773,7 +784,12 @@ int main(int argc,char *argv[]) {
fprintf(outfile, "// Only the masked channels were processed: %04X\n", channel_mask);
if (keyshift != 0)
fprintf(outfile, "// Keyshift was %d chromatic notes\n", keyshift);
fprintf(outfile, "const byte PROGMEM score [] = {\n");
fprintf(outfile, "#ifdef __AVR__\n");
fprintf(outfile, "#include <avr/pgmspace.h>\n");
fprintf(outfile, "#else\n");
fprintf(outfile, "#define PROGMEM\n");
fprintf(outfile, "#endif\n");
fprintf(outfile, "const unsigned char PROGMEM score [] = {\n");
}
}
@ -932,10 +948,19 @@ int main(int argc,char *argv[]) {
putc (CMD_PLAYNOTE | tgnum, outfile);
putc (shifted_note, outfile);
outfile_bytecount += 2;
if (velocityoutput) {
putc (trk->velocity, outfile);
outfile_bytecount++;
}
}
else {
fprintf (outfile, "0x%02X,%d, ", CMD_PLAYNOTE | tgnum, shifted_note);
outfile_items(2);
if (velocityoutput == 0) {
fprintf (outfile, "0x%02X,%d, ", CMD_PLAYNOTE | tgnum, shifted_note);
outfile_items(2);
} else {
fprintf (outfile, "0x%02X,%d,%d, ", CMD_PLAYNOTE | tgnum, shifted_note, trk->velocity);
outfile_items(3);
}
}
}
else {

Write Preview
Loading…
Cancel
Save