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#include "common.h"
void log(int level, const char * fmt, ...) {
char tmpstr[BUFSIZ];
char timestr[16];
va_list ap;
time_t now;
struct tm local;
if (PvrSetup.LogLevel >= level) {
va_start(ap, fmt);
time(&now);
localtime_r(&now, &local);
vsnprintf(tmpstr, sizeof(tmpstr), fmt, ap);
strftime(timestr, sizeof(timestr), "%H:%M:%S", &local);
printf("pvrinput: %s %s\n", timestr, tmpstr);
switch (level) {
case pvrERROR:
esyslog("%s",tmpstr);
break;
case pvrINFO:
isyslog("%s",tmpstr);
break;
case pvrDEBUG1:
case pvrDEBUG2:
default:
dsyslog("%s",tmpstr);
break;
}
va_end(ap);
}
}
/*
function IOCTL
retries the ioctl given six times before giving up,
improves stability if device/driver is actually busy
*/
int IOCTL(int fd, int cmd, void *data) {
if (fd <0) {
log(pvrERROR, "Error IOCTL %s: %s is not open", cmd, fd);
return (-1);
}
for (int retry = 5; retry >= 0; ) {
if (ioctl(fd, cmd, data) != 0) {
if (retry){
usleep(20000); /* 20msec */
retry--;
continue;
}
return -1;
}
else
return 0; /* all went okay :) */
}
return 0; /* should never reach this */
}
/*
This function takes a ivtv V4L2 integer value
and returns it as rounded 0..100% integer value
-wirbel-
*/
int IntVal2Percent(int NumVal, int MinVal, int MaxVal){
double t=0;
log(pvrDEBUG1, "IntVal2Percent(NumVal=%d, MinVal=%d, MaxVal=%d)\n",
NumVal, MinVal, MaxVal);
t=(double) (MaxVal - MinVal);
t=(NumVal-MinVal)/t;
t=100.0*t + 0.5; /* rounding to nearest int) */
return (int) t;
}
/*
This function takes a 0..100% integer value
and returns it as rounded ivtv V4L2 integer value
-wirbel-
*/
int Percent2IntVal(int Percent, int MinVal, int MaxVal){
double t=0;
log(pvrDEBUG1, "Percent2IntVal(Percent=%d, MinVal=%d, MaxVal=%d)\n",
Percent, MinVal, MaxVal);
t=Percent/100.0;
t=0.5 + t*(MaxVal-MinVal); /* +0.5 is rounding to int */
t=MinVal+t;
return (int) t;
}
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