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examples: add -n option to rec

This commit is contained in:
Alexandre Ratchov 2018-06-09 08:05:52 +02:00
parent 210da6b0cb
commit eb847f40b4
1 changed files with 25 additions and 13 deletions
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38
examples/rec.c
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@ -33,7 +33,8 @@ void
usage(void)
{
fprintf(stderr,
"usage: rec [-b size] [-c nchan] [-e enc] [-r rate]\n");
"usage: rec [-b size] [-c nchan] [-e enc] [-n nbytes] "
"[-r rate] [-x xrun]\n");
}
int
@ -42,7 +43,7 @@ main(int argc, char **argv)
int ch;
struct sio_hdl *hdl;
size_t bufsz;
ssize_t n;
ssize_t n, nbytes;
/*
* defaults parameters
@ -52,18 +53,19 @@ main(int argc, char **argv)
par.bits = 16;
par.rchan = 2;
par.rate = 48000;
nbytes = -1;
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);
while ((ch = getopt(argc, argv, "b:c:e:n:r:x:")) != -1) {
switch (ch) {
case 'b':
if (sscanf(optarg, "%u", &par.appbufsz) != 1) {
fprintf(stderr, "%s: bad buf size\n", optarg);
exit(1);
}
break;
case 'c':
if (sscanf(optarg, "%u", &par.rchan) != 1) {
fprintf(stderr, "%s: channels number\n", optarg);
fprintf(stderr, "%s: bad channels number\n", optarg);
exit(1);
}
break;
@ -73,9 +75,15 @@ main(int argc, char **argv)
exit(1);
}
break;
case 'b':
if (sscanf(optarg, "%u", &par.appbufsz) != 1) {
fprintf(stderr, "%s: bad buf size\n", optarg);
case 'n':
if (sscanf(optarg, "%zu", &nbytes) != 1) {
fprintf(stderr, "%s: bad bytes count\n", optarg);
exit(1);
}
break;
case 'r':
if (sscanf(optarg, "%u", &par.rate) != 1) {
fprintf(stderr, "%s: bad rate\n", optarg);
exit(1);
}
break;
@ -123,12 +131,16 @@ main(int argc, char **argv)
fprintf(stderr, "sio_start() failed\n");
exit(1);
}
for (;;) {
n = sio_read(hdl, buf, bufsz);
while (nbytes != 0) {
n = bufsz;
if (nbytes >= 0 && n > nbytes)
n = nbytes;
n = sio_read(hdl, buf, n);
if (n == 0) {
fprintf(stderr, "sio_write: failed\n");
exit(1);
}
nbytes -= n;
readpos += n;
if (tick) {
fprintf(stderr,