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#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "sndio.h"
#define BUFSZ 0x100
unsigned char buf[BUFSZ];
struct sio_par par;
char *xstr[] = SIO_XSTRINGS;
long long realpos = 0, playpos = 0;
void
cb(void *addr, int delta)
{
int bytes = delta * (int)(par.bps * par.pchan);
realpos += bytes;
fprintf(stderr,
"cb: bytes = %+7d, latency = %+7lld, "
"realpos = %+7lld, bufused = %+7lld\n",
bytes, playpos - realpos,
realpos, (realpos < 0) ? playpos : playpos - realpos);
}
void
usage(void) {
fprintf(stderr, "usage: play [-r rate] [-c nchan] [-e enc]\n");
}
int
main(int argc, char **argv) {
int ch;
struct sio_hdl *hdl;
ssize_t n, len;
/*
* defaults parameters
*/
sio_initpar(&par);
par.sig = 1;
par.bits = 16;
par.pchan = 2;
par.rate = 44100;
while ((ch = getopt(argc, argv, "r:c:e:b:x:")) != -1) {
switch(ch) {
case 'r':
if (sscanf(optarg, "%u", &par.rate) != 1) {
fprintf(stderr, "%s: bad rate\n", optarg);
exit(1);
}
break;
case 'c':
if (sscanf(optarg, "%u", &par.pchan) != 1) {
fprintf(stderr, "%s: bad channels\n", optarg);
exit(1);
}
break;
case 'e':
if (!sio_strtoenc(&par, optarg)) {
fprintf(stderr, "%s: bad encoding\n", optarg);
exit(1);
}
break;
case 'b':
if (sscanf(optarg, "%u", &par.bufsz) != 1) {
fprintf(stderr, "%s: bad buf size\n", optarg);
exit(1);
}
break;
case 'x':
for (par.xrun = 0;; par.xrun++) {
if (par.xrun == sizeof(xstr) / sizeof(char *)) {
fprintf(stderr,
"%s: bad xrun mode\n", optarg);
exit(1);
}
if (strcmp(xstr[par.xrun], optarg) == 0)
break;
}
break;
default:
usage();
exit(1);
break;
}
}
hdl = sio_open(NULL, SIO_PLAY, 0);
if (hdl == NULL) {
fprintf(stderr, "sio_open() failed\n");
exit(1);
}
sio_onmove(hdl, cb, NULL);
if (!sio_setpar(hdl, &par)) {
fprintf(stderr, "sio_setpar() failed\n");
exit(1);
}
if (!sio_getpar(hdl, &par)) {
fprintf(stderr, "sio_getpar() failed\n");
exit(1);
}
if (!sio_start(hdl)) {
fprintf(stderr, "sio_start() failed\n");
exit(1);
}
fprintf(stderr, "using %u bytes per buffer, rounding to %u\n",
par.bufsz * par.bps * par.pchan,
par.round * par.bps * par.pchan);
for (;;) {
len = read(STDIN_FILENO, buf, BUFSZ);
if (len < 0) {
perror("stdin");
exit(1);
}
if (len == 0)
break;
n = sio_write(hdl, buf, len);
if (n == 0) {
fprintf(stderr, "sio_write: failed\n");
exit(1);
}
playpos += n;
}
sio_close(hdl);
return 0;
}
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