Kontron KTAM3874-pITX - Manual (Page 110)

KTD-S0057-I Page 106 Linux® Programming Examples (DebianTM)
KTAM3874/pITX Software Guide
snd_pcm_hw_params_alloca
(&hwparams);
snd_pcm_sw_params_alloca (&swparams);
morehelp = 0;
while (1)
{
int c;
if ((c = getopt_long (argc, argv, "hD:r:c:f:b:p:m:o:vne", long_option, NULL)) < 0)
break;
switch (c)
{
case 'h':
morehelp++;
break;
case 'D':
device = strdup (optarg);
break;
case 'r':
rate = atoi (optarg);
rate = rate < 4000 ? 4000 : rate;
rate = rate > 196000 ? 196000 : rate;
break;
case 'c':
channels = atoi (optarg);
channels = channels < 1 ? 1 : channels;
channels = channels > 2 ? 2 : channels;
break;
case 'f':
freq = atoi (optarg);
freq = freq < 50 ? 50 : freq;
freq = freq > 22000 ? 22000 : freq;
break;
case 'b':
buffer_time = atoi (optarg);
buffer_time = buffer_time < 1000 ? 1000 : buffer_time;
buffer_time = buffer_time > 1000000 ? 1000000 : buffer_time;
break;
case 'p':
period_time = atoi (optarg);
period_time = period_time < 1000 ? 1000 : period_time;
period_time = period_time > 1000000 ? 1000000 : period_time;
break;
case 'm':
for (method = 0; transfer_methods[method].name; method++)
if (! strcasecmp(transfer_methods[method].name, optarg))
break;
if (transfer_methods[method].name == NULL)
method = 0;
break;