mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-16 23:20:43 +00:00
397 lines
7.7 KiB
C
397 lines
7.7 KiB
C
/* make music for tiny_music player */
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#define VERSION "1.0"
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <math.h>
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static int octave_adjust=0;
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static int notes_used[64];
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// CCOONNNN -- c=channel, o=octave, n=note
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int note_to_ed(char note, int flat, int sharp, int octave) {
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int offset;
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switch(note) {
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case 'C': offset=0; break;
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case 'D': offset=2; break;
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case 'E': offset=4; break;
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case 'F': offset=5; break;
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case 'G': offset=7; break;
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case 'A': offset=9; break;
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case 'B': offset=11; break;
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case 'R': offset=12; flat=0; sharp=0; octave=3; break;
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default:
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fprintf(stderr,"Unknown note %c\n",note);
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return -1;
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}
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if (flat==1) offset--;
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if (sharp==1) offset++;
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if (sharp==2) offset+=2;
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offset=((((octave+octave_adjust)-3)&0x3)<<4)|offset;
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return offset;
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}
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static int debug=0;
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static int line=0;
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static int header_version=0;
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struct note_type {
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unsigned char which;
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unsigned char note;
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int sharp,flat;
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int octave;
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int len;
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int enabled;
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int freq;
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int length;
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int left;
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int ed_freq;
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};
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static int get_note(char *string, int sp, struct note_type *n, int line) {
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int freq;
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int ch;
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// fprintf(stderr,"VMW: Entering, sp=%d\n",sp);
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/* Skip white space */
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while((string[sp]==' ' || string[sp]=='\t')) sp++;
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if (string[sp]=='\n') return -1;
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/* return early if no change */
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ch=string[sp];
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// fprintf(stderr,"VMW: %d %d\n",ch,sp);
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if (ch=='-') {
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if (header_version==0) return sp+6;
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else {
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return sp+11;
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}
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}
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/* get note info */
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n->sharp=0;
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n->flat=0;
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n->ed_freq=-1;
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n->note=ch;
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sp++;
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if (string[sp]==' ') ;
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else if (string[sp]=='#') n->sharp=1;
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else if (string[sp]=='-') n->flat=1;
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else if (string[sp]=='=') n->flat=2;
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else {
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fprintf(stderr,"Unknown note modifier %c, line %d:%d\n",
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string[sp],line,sp);
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fprintf(stderr,"String: %s\n",string);
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}
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// printf("Sharp=%d Flat=%d\n",n->sharp,n->flat);
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sp++;
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n->octave=string[sp]-'0';
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sp++;
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sp++;
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n->len=string[sp]-'0';
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sp++;
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if (n->note!='-') {
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freq=note_to_ed(n->note,n->flat,n->sharp,
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n->octave);
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n->enabled=1;
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n->length=0;
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n->ed_freq=freq;
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}
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if (header_version==2) sp+=6;
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return sp;
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}
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static int get_string(char *string, char *key, char *output, int strip_linefeed) {
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char *found;
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found=strstr(string,key);
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found=found+strlen(key);
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/* get rid of leading whitespace */
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while(1) {
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if ((*found==' ') || (*found=='\t')) found++;
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else break;
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}
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strcpy(output,found);
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/* remove trailing linefeed */
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if (strip_linefeed) output[strlen(output)-1]=0;
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return 0;
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}
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static void print_help(int just_version, char *exec_name) {
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printf("\ntext_to_ed version %s by Vince Weaver <vince@deater.net>\n\n",VERSION);
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if (just_version) exit(0);
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printf("This created Electric Duet files\n\n");
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printf("Usage:\n");
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printf("\t%s [-h] [-v] [-d] [-o X] [-i X] textfile outbase\n\n",
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exec_name);
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printf("\t-h: this help message\n");
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printf("\t-v: version info\n");
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printf("\t-d: print debug messages\n");
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printf("\t-o: Offset octave by X\n");
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printf("\t-i: set second instrument to X\n");
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exit(0);
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}
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int main(int argc, char **argv) {
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char string[BUFSIZ];
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char *result;
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char *in_filename;
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char temp[BUFSIZ];
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FILE *in_file=NULL;
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//int attributes=0;
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int loop=0;
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int sp,external_frequency,irq;
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struct note_type a,b,c;
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int copt;
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char song_name[BUFSIZ];
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char author_name[BUFSIZ];
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char comments[BUFSIZ];
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char *comments_ptr=comments;
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unsigned char sharp_char[]=" #-=";
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/* Parse command line arguments */
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while ((copt = getopt(argc, argv, "dhvo:i:"))!=-1) {
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switch (copt) {
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case 'd':
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/* Debug messages */
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printf("Debug enabled\n");
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debug=1;
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break;
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case 'h':
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/* help */
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print_help(0,argv[0]);
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break;
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case 'v':
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/* version */
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print_help(1,argv[0]);
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break;
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case 'o':
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/* octave offset */
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octave_adjust=atoi(optarg);
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break;
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default:
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print_help(0,argv[0]);
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break;
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}
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}
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if (argv[optind]!=NULL) {
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/* Open the input file */
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if (argv[optind][0]=='-') {
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in_file=stdin;
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}
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else {
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in_filename=strdup(argv[optind]);
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in_file=fopen(in_filename,"r");
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if (in_file==NULL) {
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fprintf(stderr,"Couldn't open %s\n",in_filename);
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return -1;
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}
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}
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}
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/* Get the info for the header */
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while(1) {
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result=fgets(string,BUFSIZ,in_file);
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if (result==NULL) break;
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line++;
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if (strstr(string,"ENDHEADER")) break;
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if (strstr(string,"HEADER:")) {
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get_string(string,"HEADER:",temp,1);
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header_version=atoi(temp);
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printf("Found header version %d\n",header_version);
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}
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if (strstr(string,"TITLE:")) {
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get_string(string,"TITLE:",song_name,1);
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}
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if (strstr(string,"AUTHOR:")) {
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get_string(string,"AUTHOR:",author_name,1);
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}
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if (strstr(string,"COMMENTS:")) {
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get_string(string,"COMMENTS:",comments_ptr,0);
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comments_ptr=&comments[strlen(comments)];
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}
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if (strstr(string,"FREQ:")) {
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get_string(string,"FREQ:",temp,1);
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external_frequency=atoi(temp);
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}
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if (strstr(string,"IRQ:")) {
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get_string(string,"IRQ:",temp,1);
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irq=atoi(temp);
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}
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if (strstr(string,"LOOP:")) {
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get_string(string,"LOOP:",temp,1);
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loop=atoi(temp);
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}
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}
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a.which='A'; b.which='B'; c.which='C';
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// algorithm
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// get A,B,C
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// int first=1;
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// int a_last=0,b_last=0,same_count=0;
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// int a_len=0,b_len=0,a_freq=0,b_freq=0;
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int current_length=0;
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int first=1;
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printf("peasant_song:\n");
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printf("; register init\n");
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//printf("\t.byte $00,$00,$00,$00,$00,$00 ; $00: A/B/C fine/coarse\n");
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//printf("\t.byte $00 ; $06\n");
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//printf("\t.byte $38 ; $07 mixer (ABC on)\n");
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//printf("\t.byte $0E,$0C,$0C ; $08 volume A/B/C\n");
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//printf("\t.byte $00,$00,$00,$00 ; $09\n");
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printf("\n");
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while(1) {
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result=fgets(string,BUFSIZ,in_file);
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if (result==NULL) break;
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line++;
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a.ed_freq=-1;
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b.ed_freq=-1;
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c.ed_freq=-1;
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a.length=0;
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b.length=0;
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c.length=0;
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/* skip comments */
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if (string[0]=='\'') continue;
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if (string[0]=='-') continue;
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if (string[0]=='*') continue;
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sp=0;
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/* Skip line number */
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while((string[sp]!=' ' && string[sp]!='\t')) sp++;
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sp=get_note(string,sp,&a,line);
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if (sp!=-1) sp=get_note(string,sp,&b,line);
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if (sp!=-1) sp=get_note(string,sp,&c,line);
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if (a.ed_freq>=0) {
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notes_used[a.ed_freq]++;
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fprintf(stderr,"A: %d\n",a.ed_freq);
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}
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if (b.ed_freq>=0) {
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notes_used[b.ed_freq]++;
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fprintf(stderr,"B: %d\n",b.ed_freq);
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}
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if (c.ed_freq>=0) {
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notes_used[c.ed_freq]++;
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fprintf(stderr,"C: %d\n",c.ed_freq);
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}
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if ((a.ed_freq>=0)||(b.ed_freq>=0)||(c.ed_freq>=0)) {
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if (!first) {
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printf("\t.byte $%02X ; L = %d\n",
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current_length|0xc0,current_length);
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printf("\n");
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current_length=0;
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}
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first=0;
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}
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if (a.ed_freq>=0) {
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printf("\t.byte $%02X ; A = %c%c%d\n",
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a.ed_freq,
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a.note,sharp_char[a.sharp+2*a.flat],
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a.octave);
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}
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if (b.ed_freq>=0) {
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printf("\t.byte $%02X ; B = %c%c%d\n",
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b.ed_freq|0x40,
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b.note,sharp_char[b.sharp+2*b.flat],
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b.octave);
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}
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if (c.ed_freq>=0) {
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printf("\t.byte $%02X ; C = %c%c%d\n",
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c.ed_freq|0x80,
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c.note,sharp_char[c.sharp+2*c.flat],
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c.octave);
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}
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current_length++;
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}
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printf("\t.byte $C0 ; end\n");
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int o,n;
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for(o=0;o<4;o++) {
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printf("; Octave %d : ",o);
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for(n=0;n<12;n++) {
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printf("%d ",notes_used[(o*12)+n]);
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}
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printf("\n");
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}
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(void) irq;
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(void) loop;
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(void) external_frequency;
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return 0;
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}
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