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Cream of the Crop 26
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Cream of the Crop 26.iso
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timidsrc.zip
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tk_c.c
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C/C++ Source or Header
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1996-05-20
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535 lines
/*================================================================
*
* The Tcl/Tk interface for Timidity
* written by Takashi Iwai (iwai@dragon.mm.t.u-tokyo.ac.jp)
*
* Most of the following codes are derived from both motif_ctl.c
* and motif_pipe.c. The communication between Tk program and
* timidity is established by a pipe stream as in Motif interface.
* On the contrast to motif, the stdin and stdout are assigned
* as pipe i/o in Tk interface.
*
*================================================================*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <sys/ioctl.h>
#include "config.h"
#include "common.h"
#include "instrum.h"
#include "playmidi.h"
#include "output.h"
#include "controls.h"
static void ctl_refresh(void);
static void ctl_total_time(int tt);
static void ctl_master_volume(int mv);
static void ctl_file_name(char *name);
static void ctl_current_time(int ct);
static void ctl_note(int v);
static void ctl_program(int ch, int val);
static void ctl_volume(int channel, int val);
static void ctl_expression(int channel, int val);
static void ctl_panning(int channel, int val);
static void ctl_sustain(int channel, int val);
static void ctl_pitch_bend(int channel, int val);
static void ctl_reset(void);
static int ctl_open(int using_stdin, int using_stdout);
static void ctl_close(void);
static int ctl_read(int32 *valp);
static int cmsg(int type, int verbosity_level, char *fmt, ...);
static void ctl_pass_playing_list(int number_of_files, char *list_of_files[]);
static void pipe_printf(char *fmt, ...);
static void pipe_puts(char *str);
static int pipe_gets(char *str, int maxlen);
static void pipe_open();
static void pipe_error(char *st);
static int pipe_read_ready();
/**********************************************/
#define ctl tk_control_mode
ControlMode ctl=
{
"Tcl/Tk interface", 'k',
1,0,0,
ctl_open, ctl_pass_playing_list, ctl_close, ctl_read, cmsg,
ctl_refresh, ctl_reset, ctl_file_name, ctl_total_time, ctl_current_time,
ctl_note,
ctl_master_volume, ctl_program, ctl_volume,
ctl_expression, ctl_panning, ctl_sustain, ctl_pitch_bend
};
/***********************************************************************/
/* Put controls on the pipe */
/***********************************************************************/
static int cmsg(int type, int verbosity_level, char *fmt, ...)
{
char local[255];
va_list ap;
if ((type==CMSG_TEXT || type==CMSG_INFO || type==CMSG_WARNING) &&
ctl.verbosity<verbosity_level)
return 0;
va_start(ap, fmt);
if (!ctl.opened) {
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
} else if (ctl.trace_playing) {
vsprintf(local, fmt, ap);
pipe_printf("CMSG %d", type);
pipe_puts(local);
}
va_end(ap);
return 0;
}
static void _ctl_refresh(void)
{
/* pipe_int_write(REFRESH_MESSAGE); */
}
static void ctl_refresh(void)
{
if (ctl.trace_playing)
_ctl_refresh();
}
static void ctl_total_time(int tt)
{
int centisecs=tt/(play_mode->rate/100);
pipe_printf("TIME %d", centisecs);
}
static void ctl_master_volume(int mv)
{
pipe_printf("MVOL %d", mv);
}
static void ctl_file_name(char *name)
{
pipe_printf("FILE %s", name);
}
static void ctl_current_time(int ct)
{
int i,v;
int centisecs=ct/(play_mode->rate/100);
if (!ctl.trace_playing)
return;
v=0;
i=voices;
while (i--)
if (voice[i].status!=VOICE_FREE) v++;
pipe_printf("CURT %d %d", centisecs, v);
}
static void ctl_note(int v)
{
/* int xl;
if (!ctl.trace_playing)
return;
xl=voice[v].note%(COLS-24);
wmove(dftwin, 8+voice[v].channel,xl+3);
switch(voice[v].status)
{
case VOICE_DIE:
waddch(dftwin, ',');
break;
case VOICE_FREE:
waddch(dftwin, '.');
break;
case VOICE_ON:
wattron(dftwin, A_BOLD);
waddch(dftwin, '0'+(10*voice[v].velocity)/128);
wattroff(dftwin, A_BOLD);
break;
case VOICE_OFF:
case VOICE_SUSTAINED:
waddch(dftwin, '0'+(10*voice[v].velocity)/128);
break;
}
*/
}
static void ctl_program(int ch, int val)
{
/* if (!ctl.trace_playing)
return;
wmove(dftwin, 8+ch, COLS-20);
if (ISDRUMCHANNEL(ch))
{
wattron(dftwin, A_BOLD);
wprintw(dftwin, "%03d", val);
wattroff(dftwin, A_BOLD);
}
else
wprintw(dftwin, "%03d", val);
*/
}
static void ctl_volume(int channel, int val)
{
/*
if (!ctl.trace_playing)
return;
wmove(dftwin, 8+channel, COLS-16);
wprintw(dftwin, "%3d", (val*100)/127);
*/
}
static void ctl_expression(int channel, int val)
{
/* if (!ctl.trace_playing)
return;
wmove(dftwin, 8+channel, COLS-12);
wprintw(dftwin, "%3d", (val*100)/127);
*/
}
static void ctl_panning(int channel, int val)
{
/* if (!ctl.trace_playing)
return;
if (val==NO_PANNING)
waddstr(dftwin, " ");
else if (val<5)
waddstr(dftwin, " L ");
else if (val>123)
waddstr(dftwin, " R ");
else if (val>60 && val<68)
waddstr(dftwin, " C ");
*/
}
static void ctl_sustain(int channel, int val)
{
/*
if (!ctl.trace_playing)
return;
if (val) waddch(dftwin, 'S');
else waddch(dftwin, ' ');
*/
}
static void ctl_pitch_bend(int channel, int val)
{
/* if (!ctl.trace_playing)
return;
if (val>0x2000) waddch(dftwin, '+');
else if (val<0x2000) waddch(dftwin, '-');
else waddch(dftwin, ' ');
*/
}
static void ctl_reset(void)
{
/* int i,j;
if (!ctl.trace_playing)
return;
for (i=0; i<16; i++)
{
ctl_program(i, channel[i].program);
ctl_volume(i, channel[i].volume);
ctl_expression(i, channel[i].expression);
ctl_panning(i, channel[i].panning);
ctl_sustain(i, channel[i].sustain);
ctl_pitch_bend(i, channel[i].pitchbend);
}
_ctl_refresh();
*/
}
/***********************************************************************/
/* OPEN THE CONNECTION */
/***********************************************************************/
static int ctl_open(int using_stdin, int using_stdout)
{
ctl.opened=1;
ctl.trace_playing=1; /* Default mode with Tcl/Tk interface */
/* The child process won't come back from this call */
pipe_open();
return 0;
}
/* Tells the window to disapear */
static void ctl_close(void)
{
if (ctl.opened) {
pipe_puts("QUIT");
ctl.opened=0;
}
}
/*
* Read information coming from the window in a BLOCKING way
*/
/* commands are: PREV, NEXT, QUIT, STOP, LOAD, JUMP, VOLM */
static int ctl_blocking_read(int32 *valp)
{
char buf[256], *tok, *arg;
int rc;
int new_volume;
int new_centiseconds;
rc = pipe_gets(buf, sizeof(buf)-1);
tok = strtok(buf, " ");
while (1)/* Loop after pause sleeping to treat other buttons! */
{
switch (*tok) {
case 'V':
if ((arg = strtok(NULL, " ")) != NULL) {
new_volume = atoi(arg);
*valp= new_volume - amplification ;
return RC_CHANGE_VOLUME;
}
return RC_NONE;
case 'J':
if ((arg = strtok(NULL, " ")) != NULL) {
new_centiseconds = atoi(arg);
*valp= new_centiseconds*(play_mode->rate / 100) ;
return RC_JUMP;
}
return RC_NONE;
case 'Q':
return RC_QUIT;
case 'L':
return RC_LOAD_FILE;
case 'N':
return RC_NEXT;
case 'P':
/*return RC_REALLY_PREVIOUS;*/
return RC_PREVIOUS;
case 'R':
return RC_RESTART;
case 'F':
*valp=play_mode->rate;
return RC_FORWARD;
case 'B':
*valp=play_mode->rate;
return RC_BACK;
}
if (*tok == 'S') {
pipe_gets(buf, sizeof(buf)-1);
tok = strtok(buf, " ");
if (*tok == 'S')
return RC_NONE; /* Resume where we stopped */
}
else {
fprintf(stderr,"UNKNOWN RC_MESSAGE %s\n", tok);
return RC_NONE;
}
}
}
/*
* Read information coming from the window in a non blocking way
*/
static int ctl_read(int32 *valp)
{
int num;
/* We don't wan't to lock on reading */
num=pipe_read_ready();
if (num==0)
return RC_NONE;
return(ctl_blocking_read(valp));
}
static void ctl_pass_playing_list(int number_of_files, char *list_of_files[])
{
int i=0;
char local[1000];
int command;
int32 val;
/* Pass the list to the interface */
pipe_printf("LIST %d", number_of_files);
for (i=0;i<number_of_files;i++)
pipe_puts(list_of_files[i]);
/* Ask the interface for a filename to play -> begin to play automatically */
/*pipe_puts("NEXT");*/
command = ctl_blocking_read(&val);
/* Main Loop */
for (;;)
{
if (command==RC_LOAD_FILE)
{
/* Read a LoadFile command */
pipe_gets(local, sizeof(local)-1);
command=play_midi_file(local);
}
else
{
if (command==RC_QUIT) {
/* if really QUIT */
pipe_gets(local, sizeof(local)-1);
if (*local == 'Z')
return;
/* only stop playing..*/
}
else if (command==RC_ERROR)
command=RC_TUNE_END; /* Launch next file */
switch(command)
{
case RC_NEXT:
pipe_puts("NEXT");
break;
case RC_REALLY_PREVIOUS:
pipe_puts("PREV");
break;
case RC_TUNE_END:
pipe_puts("TEND");
break;
case RC_RESTART:
pipe_puts("RSTA");
break;
}
command = ctl_blocking_read(&val);
}
}
}
/*
*/
static int pipeAppli[2],pipePanel[2]; /* Pipe for communication with Tcl/Tk process */
static int fpip_in, fpip_out; /* in and out depends in which process we are */
static int pid; /* Pid for child process */
static void pipe_open()
{
int res;
res=pipe(pipeAppli);
if (res!=0) pipe_error("PIPE_APPLI CREATION");
res=pipe(pipePanel);
if (res!=0) pipe_error("PIPE_PANEL CREATION");
if ((pid=fork())==0) /*child*/
{
close(pipePanel[1]);
close(pipeAppli[0]);
dup2(pipePanel[0], fileno(stdin));
close(pipePanel[0]);
dup2(pipeAppli[1], fileno(stdout));
close(pipeAppli[1]);
execlp(WISH, WISH, "-f", TKPROGPATH, NULL);
/* Won't come back from here */
fprintf(stderr,"WARNING: come back from TkMidity\n");
exit(0);
}
close(pipePanel[0]);
close(pipeAppli[1]);
fpip_in= pipeAppli[0];
fpip_out= pipePanel[1];
}
static int pipe_read_ready()
{
int num;
ioctl(fpip_in,FIONREAD,&num); /* see how many chars in buffer. */
return num;
}
/***********************************************************************/
/* PIPE COMUNICATION */
/***********************************************************************/
static void pipe_error(char *st)
{
fprintf(stderr,"CONNECTION PROBLEM WITH TCL/TK PROCESS IN %s BECAUSE:%s\n",
st,
sys_errlist[errno]);
exit(1);
}
static void pipe_printf(char *fmt, ...)
{
char buf[256];
va_list ap;
va_start(ap, fmt);
vsprintf(buf, fmt, ap);
pipe_puts(buf);
}
static void pipe_puts(char *str)
{
int len;
char lf = '\n';
len = strlen(str);
write(fpip_out, str, len);
write(fpip_out, &lf, 1);
}
int pipe_gets(char *str, int maxlen)
{
/* blocking reading */
char *p;
int len;
/* at least 5 letters (4+\n) command */
len = 0;
for (p = str; ; p++) {
read(fpip_in, p, 1);
if (*p == '\n')
break;
len++;
}
*p = 0;
return len;
}