int main()
{
int i;
g_std(i);
g_std(42);
g(i); // error: no matching function for call to 'fwd(int&)'
g(42); // error: no matching function for call to 'fwd(int&)'
g2(i);
g2(42);
}
void GeneralTab::updateStandard()
{
v4l2_std_id std;
v4l2_standard vs;
QString what;
g_std(std);
if (enum_std(vs, true)) {
do {
if (vs.id == std)
break;
} while (enum_std(vs));
}
if (vs.id != std) {
if (enum_std(vs, true)) {
do {
if (vs.id & std)
break;
} while (enum_std(vs));
}
}
if ((vs.id & std) == 0)
return;
m_tvStandard->setCurrentIndex(vs.index);
what.sprintf("TV Standard (0x%llX)\n"
"Frame period: %f (%d/%d)\n"
"Frame lines: %d", (long long int)std,
(double)vs.frameperiod.numerator / vs.frameperiod.denominator,
vs.frameperiod.numerator, vs.frameperiod.denominator,
vs.framelines);
m_tvStandard->setWhatsThis(what);
}
v4l2_fract v4l2::g_pixel_aspect(unsigned type)
{
v4l2_cropcap ratio;
v4l2_std_id std;
static const v4l2_fract square = { 1, 1 };
static const v4l2_fract hz50 = { 11, 12 };
static const v4l2_fract hz60 = { 11, 10 };
ratio.type = type;
if (ioctl(VIDIOC_CROPCAP, &ratio) < 0) {
if (!g_std(std))
return square;
if (std & V4L2_STD_525_60)
return hz60;
if (std & V4L2_STD_625_50)
return hz50;
return square;
}
if (!ratio.pixelaspect.numerator || !ratio.pixelaspect.denominator)
return square;
return ratio.pixelaspect;
}