/**
* \brief Get a list of Starlight Express cameras.
*
* \return a vector of strings that uniquely descript devices
*/
std::vector<std::string> SxCameraLocator::getDevicelist(DeviceName::device_type device) {
std::vector<std::string> names;
// list all devices from the context
std::vector<DevicePtr> d = context.devices();
std::vector<DevicePtr>::const_iterator i;
for (i = d.begin(); i != d.end(); i++) {
// try to open the device. On Mac OS X, opening doesn't fail
// ever, but on Linux, we may not have permission to open
// all devices
try {
DevicePtr devptr = *i;
devptr->open();
try {
if (device == DeviceName::Camera) {
names.push_back("camera:sx/" + sxname(devptr));
}
if (device == DeviceName::Guiderport) {
names.push_back("guiderport:sx/" + sxname(devptr) + "/guiderport");
}
} catch (std::runtime_error& x) {
debug(LOG_DEBUG, DEBUG_LOG, 0, "found a non"
" SX device: %s", x.what());
}
devptr->close();
} catch (std::exception& x) {
// log the error, but don't do anything about it
debug(LOG_ERR, DEBUG_LOG, 0, "cannot work with device");
}
}
debug(LOG_DEBUG, DEBUG_LOG, 0, "found %d SX devices", names.size());
return names;
}
/**
* \brief Construct a camera from a camera description
*
* \param name Name of the camera
* \return Camera with that name
*/
CameraPtr SxCameraLocator::getCamera0(const DeviceName& name) {
std::string sname = name.unitname();
debug(LOG_DEBUG, DEBUG_LOG, 0, "analyzing '%s'", sname.c_str());
// parse the name string
int busnumber = 0, deviceaddress = 0;
sxparse(sname, busnumber, deviceaddress);
debug(LOG_DEBUG, DEBUG_LOG, 0,
"looking for busnumber=%d, deviceaddress=%d",
busnumber, deviceaddress);
// find the device with this bus number and address
std::vector<DevicePtr> d = context.devices();
std::vector<DevicePtr>::const_iterator i;
for (i = d.begin(); i != d.end(); i++) {
DevicePtr dptr = (*i);
if ((dptr->getBusNumber() == busnumber) &&
(dptr->getDeviceAddress() == deviceaddress)) {
debug(LOG_DEBUG, DEBUG_LOG, 0, "found matching device");
dptr->open();
return CameraPtr(new SxCamera(dptr));
}
}
throw SxError("cannot create a camera from a name");
}