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/* Copyright 2008 Miller Puckette. Berkeley license; see the
file LICENSE.txt in this distribution. */
/* A plug-in scheduler that turns Pd into a filter that inputs and
outputs audio and messages. */
/* todo:
fix schedlib code to use extent2
figure out about if (sys_externalschedlib) { return; } in s_audio.c
make buffer size ynamically growable
*/
#include "m_pd.h"
#include "s_stuff.h"
#include <stdio.h>
#define BUFSIZE 65536
static char inbuf[BUFSIZE];
#if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__GNU__)
void glob_watchdog(t_pd *dummy);
static void pollwatchdog( void)
{
static int sched_diddsp, sched_nextpingtime;
sched_diddsp++;
if (sys_nogui && sys_hipriority && (sched_diddsp - sched_nextpingtime > 0))
{
glob_watchdog(0);
/* ping every 2 seconds */
sched_nextpingtime = sched_diddsp +
2 * (int)(sys_dacsr /(double)sys_schedblocksize);
}
}
#endif
int pd_extern_sched(char *flags)
{
int naudioindev, audioindev[MAXAUDIOINDEV], chindev[MAXAUDIOINDEV];
int naudiooutdev, audiooutdev[MAXAUDIOOUTDEV], choutdev[MAXAUDIOOUTDEV];
int i, j, rate, advance, callback, chin, chout, fill = 0, c, blocksize;
t_binbuf *b = binbuf_new();
sys_get_audio_params(&naudioindev, audioindev, chindev,
&naudiooutdev, audiooutdev, choutdev, &rate, &advance, &callback,
&blocksize);
chin = (naudioindev < 1 ? 0 : chindev[0]);
chout = (naudiooutdev < 1 ? 0 : choutdev[0]);
/* fprintf(stderr, "Pd plug-in scheduler called, chans %d %d, sr %d\n",
chin, chout, (int)rate); */
sys_setchsr(chin, chout, rate);
sys_audioapi = API_NONE;
while ((c = getchar()) != EOF)
{
if (c == ';')
{
int n;
t_atom *ap;
binbuf_text(b, inbuf, fill);
n = binbuf_getnatom(b);
ap = binbuf_getvec(b);
fill = 0;
if (n > 0 && ap[0].a_type == A_FLOAT)
{
/* a list -- take it as incoming signals. */
int chan, nchan = n/DEFDACBLKSIZE;
t_sample *fp;
for (i = chan = 0, fp = sys_soundin; chan < nchan; chan++)
for (j = 0; j < DEFDACBLKSIZE; j++)
*fp++ = atom_getfloat(ap++);
for (; chan < chin; chan++)
for (j = 0; j < DEFDACBLKSIZE; j++)
*fp++ = 0;
sched_tick(sys_time+sys_time_per_dsp_tick);
sys_pollgui();
#if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__GNU__)
pollwatchdog();
#endif
printf(";\n");
for (i = chout*DEFDACBLKSIZE, fp = sys_soundout; i--; fp++)
{
printf("%g\n", *fp);
*fp = 0;
}
printf(";\n");
fflush(stdout);
}
else if (n > 1 && ap[0].a_type == A_SYMBOL)
{
t_pd *whom = ap[0].a_w.w_symbol->s_thing;
if (!whom)
error("%s: no such object", ap[0].a_w.w_symbol->s_name);
else if (ap[1].a_type == A_SYMBOL)
typedmess(whom, ap[1].a_w.w_symbol, n-2, ap+2);
else pd_list(whom, 0, n-1, ap+1);
}
}
else if (fill < BUFSIZE)
inbuf[fill++] = c;
else if (fill == BUFSIZE)
fprintf(stderr, "pd-extern: input buffer overflow\n");
}
return (0);
}
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