timidity.c
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/*
TiMidity -- Experimental MIDI to WAVE converter
Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
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This program is free software; you can redistribute it and/or modify
it under the terms of the Perl Artistic License, available in COPYING.
*/
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include "SDL.h"
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#include "config.h"
#include "common.h"
#include "instrum.h"
#include "playmidi.h"
#include "readmidi.h"
#include "output.h"
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#include "ctrlmode.h"
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#include "timidity.h"
#include "tables.h"
void (*s32tobuf)(void *dp, int32 *lp, int32 c);
int free_instruments_afterwards=0;
static char def_instr_name[256]="";
int AUDIO_BUFFER_SIZE;
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resample_t *resample_buffer=NULL;
int32 *common_buffer=NULL;
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int num_ochannels;
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#define MAXWORDS 10
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static int read_config_file(const char *name)
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{
FILE *fp;
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char tmp[PATH_MAX], *w[MAXWORDS], *cp;
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ToneBank *bank=0;
int i, j, k, line=0, words;
static int rcf_count=0;
if (rcf_count>50)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"Probable source loop in configuration files");
return (-1);
}
if (!(fp=open_file(name, 1, OF_VERBOSE)))
return -1;
while (fgets(tmp, sizeof(tmp), fp))
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w[words=0]=strtok(tmp, " \t\r\n\240");
if (!w[0] || (*w[0]=='#')) continue;
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while (w[words] && (words < (MAXWORDS-1)))
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{
w[++words]=strtok(0," \t\r\n\240");
if (w[words] && w[words][0]=='#') break;
}
if (!strcmp(w[0], "map")) continue;
if (!strcmp(w[0], "dir"))
{
if (words < 2)
{
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ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: No directory given\n", name, line);
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close_file(fp);
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return -2;
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}
for (i=1; i<words; i++)
add_to_pathlist(w[i]);
}
else if (!strcmp(w[0], "source"))
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{
if (words < 2)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: No file name given\n", name, line);
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close_file(fp);
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return -2;
}
for (i=1; i<words; i++)
{
rcf_count++;
read_config_file(w[i]);
rcf_count--;
}
}
else if (!strcmp(w[0], "default"))
{
if (words != 2)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: Must specify exactly one patch name\n",
name, line);
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close_file(fp);
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return -2;
}
strncpy(def_instr_name, w[1], 255);
def_instr_name[255]='\0';
}
else if (!strcmp(w[0], "drumset"))
{
if (words < 2)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: No drum set number given\n",
name, line);
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close_file(fp);
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return -2;
}
i=atoi(w[1]);
if (i<0 || i>127)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: Drum set must be between 0 and 127\n",
name, line);
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close_file(fp);
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return -2;
}
if (!drumset[i])
{
drumset[i]=safe_malloc(sizeof(ToneBank));
memset(drumset[i], 0, sizeof(ToneBank));
}
bank=drumset[i];
}
else if (!strcmp(w[0], "bank"))
{
if (words < 2)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: No bank number given\n",
name, line);
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close_file(fp);
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return -2;
}
i=atoi(w[1]);
if (i<0 || i>127)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: Tone bank must be between 0 and 127\n",
name, line);
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close_file(fp);
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return -2;
}
if (!tonebank[i])
{
tonebank[i]=safe_malloc(sizeof(ToneBank));
memset(tonebank[i], 0, sizeof(ToneBank));
}
bank=tonebank[i];
}
else {
if ((words < 2) || (*w[0] < '0' || *w[0] > '9'))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: syntax error\n", name, line);
return -2;
}
i=atoi(w[0]);
if (i<0 || i>127)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: Program must be between 0 and 127\n",
name, line);
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close_file(fp);
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return -2;
}
if (!bank)
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: Must specify tone bank or drum set "
"before assignment\n",
name, line);
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close_file(fp);
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return -2;
}
if (bank->tone[i].name)
free(bank->tone[i].name);
strcpy((bank->tone[i].name=safe_malloc(strlen(w[1])+1)),w[1]);
bank->tone[i].note=bank->tone[i].amp=bank->tone[i].pan=
bank->tone[i].strip_loop=bank->tone[i].strip_envelope=
bank->tone[i].strip_tail=-1;
for (j=2; j<words; j++)
{
if (!(cp=strchr(w[j], '=')))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: line %d: bad patch option %s\n",
name, line, w[j]);
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close_file(fp);
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return -2;
}
*cp++=0;
if (!strcmp(w[j], "amp"))
{
k=atoi(cp);
if ((k<0 || k>MAX_AMPLIFICATION) || (*cp < '0' || *cp > '9'))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: amplification must be between "
"0 and %d\n", name, line, MAX_AMPLIFICATION);
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close_file(fp);
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return -2;
}
bank->tone[i].amp=k;
}
else if (!strcmp(w[j], "note"))
{
k=atoi(cp);
if ((k<0 || k>127) || (*cp < '0' || *cp > '9'))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: note must be between 0 and 127\n",
name, line);
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close_file(fp);
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return -2;
}
bank->tone[i].note=k;
}
else if (!strcmp(w[j], "pan"))
{
if (!strcmp(cp, "center"))
k=64;
else if (!strcmp(cp, "left"))
k=0;
else if (!strcmp(cp, "right"))
k=127;
else
k=((atoi(cp)+100) * 100) / 157;
if ((k<0 || k>127) ||
(k==0 && *cp!='-' && (*cp < '0' || *cp > '9')))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: panning must be left, right, "
"center, or between -100 and 100\n",
name, line);
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close_file(fp);
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return -2;
}
bank->tone[i].pan=k;
}
else if (!strcmp(w[j], "keep"))
{
if (!strcmp(cp, "env"))
bank->tone[i].strip_envelope=0;
else if (!strcmp(cp, "loop"))
bank->tone[i].strip_loop=0;
else
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: keep must be env or loop\n", name, line);
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close_file(fp);
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return -2;
}
}
else if (!strcmp(w[j], "strip"))
{
if (!strcmp(cp, "env"))
bank->tone[i].strip_envelope=1;
else if (!strcmp(cp, "loop"))
bank->tone[i].strip_loop=1;
else if (!strcmp(cp, "tail"))
bank->tone[i].strip_tail=1;
else
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
"%s: line %d: strip must be env, loop, or tail\n",
name, line);
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close_file(fp);
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return -2;
}
}
else
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: line %d: bad patch option %s\n",
name, line, w[j]);
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close_file(fp);
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return -2;
}
}
}
}
if (ferror(fp))
{
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "Can't read from %s\n", name);
close_file(fp);
return -2;
}
close_file(fp);
return 0;
}
int Timidity_Init(int rate, int format, int channels, int samples)
{
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const char *env = getenv("TIMIDITY_CFG");
if (!env || read_config_file(env)<0) {
if (read_config_file(CONFIG_FILE)<0) {
if (read_config_file(CONFIG_FILE_ETC)<0) {
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return(-1);
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}
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if (channels < 1 || channels == 3 || channels == 5 || channels > 6) return(-1);
num_ochannels = channels;
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/* Set play mode parameters */
play_mode->rate = rate;
play_mode->encoding = 0;
if ( (format&0xFF) == 16 ) {
play_mode->encoding |= PE_16BIT;
}
if ( (format&0x8000) ) {
play_mode->encoding |= PE_SIGNED;
}
if ( channels == 1 ) {
play_mode->encoding |= PE_MONO;
}
switch (format) {
case AUDIO_S8:
s32tobuf = s32tos8;
break;
case AUDIO_U8:
s32tobuf = s32tou8;
break;
case AUDIO_S16LSB:
s32tobuf = s32tos16l;
break;
case AUDIO_S16MSB:
s32tobuf = s32tos16b;
break;
case AUDIO_U16LSB:
s32tobuf = s32tou16l;
break;
case AUDIO_U16MSB:
s32tobuf = s32tou16b;
break;
default:
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "Unsupported audio format");
return(-1);
}
AUDIO_BUFFER_SIZE = samples;
/* Allocate memory for mixing (WARNING: Memory leak!) */
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resample_buffer = safe_malloc(AUDIO_BUFFER_SIZE*sizeof(resample_t)+100);
common_buffer = safe_malloc(AUDIO_BUFFER_SIZE*num_ochannels*sizeof(int32));
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init_tables();
if (ctl->open(0, 0)) {
ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "Couldn't open %s\n", ctl->id_name);
return(-1);
}
if (!control_ratio) {
control_ratio = play_mode->rate / CONTROLS_PER_SECOND;
if(control_ratio<1)
control_ratio=1;
else if (control_ratio > MAX_CONTROL_RATIO)
control_ratio=MAX_CONTROL_RATIO;
}
if (*def_instr_name)
set_default_instrument(def_instr_name);
return(0);
}
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char timidity_error[TIMIDITY_ERROR_SIZE] = "";
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const char *Timidity_Error(void)
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{
return(timidity_error);
}