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/*!
* \file MathPluginManagement.cpp
*
* \author Roger James
* \date 13th November 2013
*
*/
#include "MathPluginManagement.h"
#include <dirent.h>
#include <dlfcn.h>
#include <cerrno>
namespace INDI
{
namespace AlignmentSubsystem
{
MathPluginManagement::MathPluginManagement() : CurrentInMemoryDatabase(nullptr),
pGetApproximateMountAlignment(&MathPlugin::GetApproximateMountAlignment),
pInitialise(&MathPlugin::Initialise),
pSetApproximateMountAlignment(&MathPlugin::SetApproximateMountAlignment),
pTransformCelestialToTelescope(&MathPlugin::TransformCelestialToTelescope),
pTransformTelescopeToCelestial(&MathPlugin::TransformTelescopeToCelestial),
pLoadedMathPlugin(&BuiltInPlugin), LoadedMathPluginHandle(nullptr)
{
memset(&AlignmentSubsystemCurrentMathPlugin, 0, sizeof(IText));
}
void MathPluginManagement::InitProperties(Telescope *ChildTelescope)
{
EnumeratePlugins();
AlignmentSubsystemMathPlugins.reset(new ISwitch[MathPluginDisplayNames.size() + 1]);
IUFillSwitch(AlignmentSubsystemMathPlugins.get(), "INBUILT_MATH_PLUGIN", "Inbuilt Math Plugin", ISS_ON);
for (int i = 0; i < (int)MathPluginDisplayNames.size(); i++)
{
IUFillSwitch(AlignmentSubsystemMathPlugins.get() + i + 1, MathPluginDisplayNames[i].c_str(),
MathPluginDisplayNames[i].c_str(), ISS_OFF);
}
IUFillSwitchVector(&AlignmentSubsystemMathPluginsV, AlignmentSubsystemMathPlugins.get(),
MathPluginDisplayNames.size() + 1, ChildTelescope->getDeviceName(),
"ALIGNMENT_SUBSYSTEM_MATH_PLUGINS", "Math Plugins", ALIGNMENT_TAB, IP_RW, ISR_1OFMANY, 60,
IPS_IDLE);
int configPlugin = -1;
IUGetConfigOnSwitchIndex(ChildTelescope->getDeviceName(), "ALIGNMENT_SUBSYSTEM_MATH_PLUGINS", &configPlugin);
if (configPlugin > 0 && configPlugin < AlignmentSubsystemMathPluginsV.nsp)
{
IUResetSwitch(&AlignmentSubsystemMathPluginsV);
AlignmentSubsystemMathPluginsV.sp[configPlugin].s = ISS_ON;
HandlePluginLoading(ChildTelescope, 0, configPlugin);
}
// Select nearest if available
else
{
ISwitch *sp = IUFindSwitch(&AlignmentSubsystemMathPluginsV, "Nearest Math Plugin");
if (sp)
{
IUResetSwitch(&AlignmentSubsystemMathPluginsV);
for (int i = 0; i < AlignmentSubsystemMathPluginsV.nsp; i++)
{
if (!strcmp(AlignmentSubsystemMathPluginsV.sp[i].name, sp->name))
{
sp->s = ISS_ON;
HandlePluginLoading(ChildTelescope, 0, i);
break;
}
}
}
}
ChildTelescope->registerProperty(&AlignmentSubsystemMathPluginsV);
IUFillSwitch(&AlignmentSubsystemMathPluginInitialise, "ALIGNMENT_SUBSYSTEM_MATH_PLUGIN_INITIALISE", "OK", ISS_OFF);
IUFillSwitchVector(&AlignmentSubsystemMathPluginInitialiseV, &AlignmentSubsystemMathPluginInitialise, 1,
ChildTelescope->getDeviceName(), "ALIGNMENT_SUBSYSTEM_MATH_PLUGIN_INITIALISE",
"(Re)Initialise Plugin", ALIGNMENT_TAB, IP_RW, ISR_ATMOST1, 60, IPS_IDLE);
ChildTelescope->registerProperty(&AlignmentSubsystemMathPluginInitialiseV);
IUFillSwitch(&AlignmentSubsystemActive, "ALIGNMENT SUBSYSTEM ACTIVE", "Alignment Subsystem Active", ISS_OFF);
IUFillSwitchVector(&AlignmentSubsystemActiveV, &AlignmentSubsystemActive, 1, ChildTelescope->getDeviceName(),
"ALIGNMENT_SUBSYSTEM_ACTIVE", "Activate alignment subsystem", ALIGNMENT_TAB, IP_RW, ISR_ATMOST1,
60, IPS_IDLE);
ChildTelescope->registerProperty(&AlignmentSubsystemActiveV);
// The following property is used for configuration purposes only and is not exposed to the client.
IUFillText(&AlignmentSubsystemCurrentMathPlugin, "ALIGNMENT_SUBSYSTEM_CURRENT_MATH_PLUGIN", "Current Math Plugin",
AlignmentSubsystemMathPlugins.get()[0].label);
IUFillTextVector(&AlignmentSubsystemCurrentMathPluginV, &AlignmentSubsystemCurrentMathPlugin, 1,
ChildTelescope->getDeviceName(), "ALIGNMENT_SUBSYSTEM_CURRENT_MATH_PLUGIN", "Current Math Plugin",
ALIGNMENT_TAB, IP_RO, 60, IPS_IDLE);
}
void MathPluginManagement::ProcessTextProperties(Telescope *pTelescope, const char *name, char *texts[], char *names[],
int n)
{
//DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_DEBUG, "ProcessTextProperties - name(%s)", name);
if (strcmp(name, AlignmentSubsystemCurrentMathPluginV.name) == 0)
{
AlignmentSubsystemCurrentMathPluginV.s = IPS_OK;
IUUpdateText(&AlignmentSubsystemCurrentMathPluginV, texts, names, n);
if (0 != strcmp(AlignmentSubsystemMathPlugins.get()[0].label, AlignmentSubsystemCurrentMathPlugin.text))
{
// Unload old plugin if required
if (nullptr != LoadedMathPluginHandle)
{
typedef void Destroy_t(MathPlugin *);
Destroy_t *Destroy = (Destroy_t *)dlsym(LoadedMathPluginHandle, "Destroy");
if (nullptr != Destroy)
{
Destroy(pLoadedMathPlugin);
pLoadedMathPlugin = nullptr;
if (0 == dlclose(LoadedMathPluginHandle))
{
LoadedMathPluginHandle = nullptr;
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - dlclose failed on loaded plugin - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - cannot get Destroy function - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
// It is not the built in so try to load it
if (nullptr != (LoadedMathPluginHandle = dlopen(AlignmentSubsystemCurrentMathPlugin.text, RTLD_NOW)))
{
typedef MathPlugin *Create_t();
Create_t *Create = (Create_t *)dlsym(LoadedMathPluginHandle, "Create");
if (nullptr != Create)
{
pLoadedMathPlugin = Create();
// TODO - Update the client to reflect the new plugin
int i = 0;
for (i = 0; i < (int)MathPluginFiles.size(); i++)
{
if (0 == strcmp(AlignmentSubsystemCurrentMathPlugin.text, MathPluginFiles[i].c_str()))
break;
}
if (i < (int)MathPluginFiles.size())
{
IUResetSwitch(&AlignmentSubsystemMathPluginsV);
(AlignmentSubsystemMathPlugins.get() + i + 1)->s = ISS_ON;
// Update client
IDSetSwitch(&AlignmentSubsystemMathPluginsV, nullptr);
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_WARNING,
"MathPluginManagement - cannot find %s in list of plugins", MathPluginFiles[i].c_str());
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR, "MathPluginManagement - cannot get Create function - %s",
dlerror());
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR, "MathPluginManagement - cannot load plugin %s error %s",
AlignmentSubsystemCurrentMathPlugin.text, dlerror());
}
}
else
{
// It is the inbuilt plugin
// Unload old plugin if required
if (nullptr != LoadedMathPluginHandle)
{
typedef void Destroy_t(MathPlugin *);
Destroy_t *Destroy = (Destroy_t *)dlsym(LoadedMathPluginHandle, "Destroy");
if (nullptr != Destroy)
{
Destroy(pLoadedMathPlugin);
pLoadedMathPlugin = nullptr;
if (0 == dlclose(LoadedMathPluginHandle))
{
LoadedMathPluginHandle = nullptr;
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - dlclose failed on loaded plugin - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - cannot get Destroy function - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
pLoadedMathPlugin = &BuiltInPlugin;
IUResetSwitch(&AlignmentSubsystemMathPluginsV);
AlignmentSubsystemMathPlugins.get()->s = ISS_ON;
// Update client
IDSetSwitch(&AlignmentSubsystemMathPluginsV, nullptr);
}
}
}
void MathPluginManagement::ProcessSwitchProperties(Telescope *pTelescope, const char *name, ISState *states,
char *names[], int n)
{
//DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_DEBUG, "ProcessSwitchProperties - name(%s)", name);
INDI_UNUSED(pTelescope);
if (strcmp(name, AlignmentSubsystemMathPluginsV.name) == 0)
{
int CurrentPlugin = IUFindOnSwitchIndex(&AlignmentSubsystemMathPluginsV);
IUUpdateSwitch(&AlignmentSubsystemMathPluginsV, states, names, n);
AlignmentSubsystemMathPluginsV.s = IPS_OK; // Assume OK for the time being
int NewPlugin = IUFindOnSwitchIndex(&AlignmentSubsystemMathPluginsV);
HandlePluginLoading(pTelescope, CurrentPlugin, NewPlugin);
// Update client
IDSetSwitch(&AlignmentSubsystemMathPluginsV, nullptr);
}
else if (strcmp(name, AlignmentSubsystemMathPluginInitialiseV.name) == 0)
{
AlignmentSubsystemMathPluginInitialiseV.s = IPS_OK;
IUResetSwitch(&AlignmentSubsystemMathPluginInitialiseV);
// Update client display
IDSetSwitch(&AlignmentSubsystemMathPluginInitialiseV, nullptr);
// Initialise or reinitialise the current math plugin
Initialise(CurrentInMemoryDatabase);
}
else if (strcmp(name, AlignmentSubsystemActiveV.name) == 0)
{
AlignmentSubsystemActiveV.s = IPS_OK;
if (0 == IUUpdateSwitch(&AlignmentSubsystemActiveV, states, names, n))
// Update client
IDSetSwitch(&AlignmentSubsystemActiveV, nullptr);
}
}
void MathPluginManagement::HandlePluginLoading(Telescope *pTelescope, int CurrentPlugin, int NewPlugin)
{
if (NewPlugin != CurrentPlugin)
{
MountAlignment_t currentMountAlignment = GetApproximateMountAlignment();
// New plugin requested
// Unload old plugin if required
if (0 != CurrentPlugin)
{
typedef void Destroy_t(MathPlugin *);
Destroy_t *Destroy = (Destroy_t *)dlsym(LoadedMathPluginHandle, "Destroy");
if (nullptr != Destroy)
{
Destroy(pLoadedMathPlugin);
pLoadedMathPlugin = nullptr;
if (0 == dlclose(LoadedMathPluginHandle))
{
LoadedMathPluginHandle = nullptr;
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - dlclose failed on loaded plugin - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR,
"MathPluginManagement - cannot get Destroy function - %s", dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
// Load the requested plugin if required
if (0 != NewPlugin)
{
std::string PluginPath(MathPluginFiles[NewPlugin - 1]);
if (nullptr != (LoadedMathPluginHandle = dlopen(PluginPath.c_str(), RTLD_NOW)))
{
typedef MathPlugin *Create_t();
Create_t *Create = (Create_t *)dlsym(LoadedMathPluginHandle, "Create");
if (nullptr != Create)
{
pLoadedMathPlugin = Create();
SetApproximateMountAlignment(currentMountAlignment);
Initialise(CurrentInMemoryDatabase);
IUSaveText(&AlignmentSubsystemCurrentMathPlugin, PluginPath.c_str());
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR, "MathPluginManagement - cannot get Create function - %s",
dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
else
{
DEBUGFDEVICE(pTelescope->getDeviceName(), INDI::Logger::DBG_ERROR, "MathPluginManagement - cannot load plugin %s error %s",
PluginPath.c_str(), dlerror());
AlignmentSubsystemMathPluginsV.s = IPS_ALERT;
}
}
else
{
// It is in built plugin just set up the pointers
pLoadedMathPlugin = &BuiltInPlugin;
}
}
}
void MathPluginManagement::SetAlignmentSubsystemActive(bool enable)
{
AlignmentSubsystemActive.s = enable ? ISS_ON : ISS_OFF;
AlignmentSubsystemActiveV.s = IPS_OK;
IDSetSwitch(&AlignmentSubsystemActiveV, nullptr);
}
void MathPluginManagement::SaveConfigProperties(FILE *fp)
{
IUSaveConfigText(fp, &AlignmentSubsystemCurrentMathPluginV);
IUSaveConfigSwitch(fp, &AlignmentSubsystemMathPluginsV);
IUSaveConfigSwitch(fp, &AlignmentSubsystemActiveV);
}
void MathPluginManagement::SetApproximateMountAlignmentFromMountType(MountType_t Type)
{
if (EQUATORIAL == Type)
{
IGeographicCoordinates Position { 0, 0, 0 };
if (CurrentInMemoryDatabase->GetDatabaseReferencePosition(Position))
{
if (Position.latitude >= 0)
SetApproximateMountAlignment(NORTH_CELESTIAL_POLE);
else
SetApproximateMountAlignment(SOUTH_CELESTIAL_POLE);
}
// If no position found, assume northern hemisphere.
else
SetApproximateMountAlignment(NORTH_CELESTIAL_POLE);
}
else
SetApproximateMountAlignment(ZENITH);
}
// These must match the function signatures in MathPlugin
MountAlignment_t MathPluginManagement::GetApproximateMountAlignment()
{
return (pLoadedMathPlugin->*pGetApproximateMountAlignment)();
}
bool MathPluginManagement::Initialise(InMemoryDatabase *pInMemoryDatabase)
{
return (pLoadedMathPlugin->*pInitialise)(pInMemoryDatabase);
}
void MathPluginManagement::SetApproximateMountAlignment(MountAlignment_t ApproximateAlignment)
{
(pLoadedMathPlugin->*pSetApproximateMountAlignment)(ApproximateAlignment);
}
bool MathPluginManagement::TransformCelestialToTelescope(const double RightAscension, const double Declination,
double JulianOffset,
TelescopeDirectionVector &ApparentTelescopeDirectionVector)
{
if (AlignmentSubsystemActive.s == ISS_ON)
return (pLoadedMathPlugin->*pTransformCelestialToTelescope)(RightAscension, Declination, JulianOffset,
ApparentTelescopeDirectionVector);
else
return false;
}
bool MathPluginManagement::TransformTelescopeToCelestial(
const TelescopeDirectionVector &ApparentTelescopeDirectionVector, double &RightAscension, double &Declination)
{
if (AlignmentSubsystemActive.s == ISS_ON)
return (pLoadedMathPlugin->*pTransformTelescopeToCelestial)(ApparentTelescopeDirectionVector, RightAscension,
Declination);
else
return false;
}
void MathPluginManagement::EnumeratePlugins()
{
MathPluginFiles.clear();
MathPluginDisplayNames.clear();
#ifndef OSX_EMBEDED_MODE
dirent *de;
DIR *dp;
errno = 0;
char MATH_PLUGINS_DIRECTORY[2048];
#if defined(__APPLE__)
const char *indiprefix = getenv("INDIPREFIX");
if (indiprefix)
snprintf(MATH_PLUGINS_DIRECTORY, 2048 - 1, "%s/Contents/Resources/MathPlugins", indiprefix);
else
snprintf(MATH_PLUGINS_DIRECTORY, 2048 - 1, INDI_MATH_PLUGINS_DIRECTORY);
#else
snprintf(MATH_PLUGINS_DIRECTORY, 2048 - 1, INDI_MATH_PLUGINS_DIRECTORY);
#endif
dp = opendir(MATH_PLUGINS_DIRECTORY);
strncat(MATH_PLUGINS_DIRECTORY, "/", 2);
if (dp)
{
while (true)
{
void *Handle;
std::string PluginPath(MATH_PLUGINS_DIRECTORY);
errno = 0;
de = readdir(dp);
if (de == nullptr)
break;
if (0 == strcmp(de->d_name, "."))
continue;
if (0 == strcmp(de->d_name, ".."))
continue;
// Try to load the plugin
PluginPath.append(de->d_name);
Handle = dlopen(PluginPath.c_str(), RTLD_NOW);
if (nullptr == Handle)
{
IDLog("EnumeratePlugins - cannot load plugin %s error %s\n", PluginPath.c_str(), dlerror());
continue;
}
// Try to get the plugin display name
typedef const char *GetDisplayName_t();
GetDisplayName_t *GetDisplayNamePtr = (GetDisplayName_t *)dlsym(Handle, "GetDisplayName");
if (nullptr == GetDisplayNamePtr)
{
IDLog("EnumeratePlugins - cannot get plugin %s DisplayName error %s\n", PluginPath.c_str(), dlerror());
continue;
}
IDLog("EnumeratePlugins - found plugin %s\n", GetDisplayNamePtr());
MathPluginDisplayNames.push_back(GetDisplayNamePtr());
MathPluginFiles.push_back(PluginPath);
dlclose(Handle);
}
closedir(dp);
}
else
{
IDLog("EnumeratePlugins - Failed to open %s error %s\n", MATH_PLUGINS_DIRECTORY, strerror(errno));
}
#endif
}
} // namespace AlignmentSubsystem
} // namespace INDI
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