int CanonEDCamera::Shutdown()
{
// save images on the memory card
if (isLegacy_)
EdsSendStatusCommand (camera_, kEdsCameraStatusCommand_UILock, 0);
EdsSaveTo toCamera = kEdsSaveTo_Camera;
EdsError err = EdsSetPropertyData(camera_, kEdsPropID_SaveTo, 0 , sizeof(EdsSaveTo), &toCamera);
if (isLegacy_)
EdsSendStatusCommand (camera_, kEdsCameraStatusCommand_UIUnLock, 0);
// Close session with camera
err = EdsCloseSession(camera_);
// Release camera
if(camera_ != NULL)
{
EdsRelease(camera_);
}
// Terminate SDK
if(isSDKLoaded_)
{
EdsTerminateSDK();
}
return DEVICE_OK;
}
EdsError Camera::requestOpenSession(const Settings &settings) {
if (mHasOpenSession) {
return EDS_ERR_SESSION_ALREADY_OPEN;
}
EdsError error = EdsOpenSession(mCamera);
if (error != EDS_ERR_OK) {
std::cerr << "ERROR - failed to open camera session" << std::endl;
return error;
}
mHasOpenSession = true;
mShouldKeepAlive = settings.getShouldKeepAlive();
EdsUInt32 saveTo = settings.getPictureSaveLocation();
error = EdsSetPropertyData(mCamera, kEdsPropID_SaveTo, 0, sizeof(saveTo) , &saveTo);
if (error != EDS_ERR_OK) {
std::cerr << "ERROR - failed to set save destination host/device" << std::endl;
return error;
}
//UI lock
if (error == EDS_ERR_OK)
{
error = EdsSendStatusCommand(mCamera, kEdsCameraStatusCommand_UILock, 0);
}
if (error == EDS_ERR_OK)
{
mIsLocked = true;
}
if (saveTo == kEdsSaveTo_Host) {
// ??? - requires UI lock?
EdsCapacity capacity = {0x7FFFFFFF, 0x1000, 1};
error = EdsSetCapacity(mCamera, capacity);
if (error != EDS_ERR_OK) {
std::cerr << "ERROR - failed to set capacity of host" << std::endl;
return error;
}
}
//It releases it when locked
if (mIsLocked)
{
EdsSendStatusCommand(mCamera, kEdsCameraStatusCommand_UIUnLock, 0);
}
return EDS_ERR_OK;
}
/*
* Command to un/lock the camera to prevent changes
* being made directly on the camera. Necessary during
* bulb shooting as otherwise the camera may hang.
*
* Possible values:
* kEdsCameraStatusCommand_UILock,
* kEdsCameraStatusCommand_UIUnLock,
*/
bool
Controller::lockCommand( int value )
{
int result = EDS_ERR_OK;
/*
* Retry if camera device is busy.
*/
do {
result = EdsSendStatusCommand(
camera->handle(),
value,
0 );
/*
* If retry is required, the camera may become unstable if multiple
* commands are issued in succession without an intervening interval.
* So, put a delay in before command is reissued.
*/
if( result == EDS_ERR_DEVICE_BUSY ) {
emit eventReport( new Event( Event::CameraBusy, 0, "lock" ) );
EdsSendStatusCommand(
camera->handle(),
kEdsCameraStatusCommand_UIUnLock,
0 );
QCoreApplication::processEvents();
Sleep( 500 ); // milliseconds
}
} while( result == EDS_ERR_DEVICE_BUSY );
if( result != EDS_ERR_OK ) {
emit eventReport( new Event( Event::LockFailure, result ) );
}
return( result == EDS_ERR_OK );
}
int CanonEDCamera::Initialize()
{
EdsError err = EDS_ERR_OK;
// Initialize SDK
err = EdsInitializeSDK();
if(err == EDS_ERR_OK)
{
isSDKLoaded_ = true;
}
// Get first camera
if(err == EDS_ERR_OK)
{
err = getFirstCamera (&camera_);
}
if (err == EDS_ERR_DEVICE_NOT_FOUND)
return ERR_NO_CAMERA;
// event handlers are static functions that need a reference to this camera object to function
// provide that static ref here. This approach will fail with multiple cameras. In that case,
// consider making a map with cameras and references to our CanonEDCamera objects
g_Self = this;
// Set event handler
if(err == EDS_ERR_OK)
{
err = EdsSetObjectEventHandler(camera_, kEdsObjectEvent_All, &CanonEDCamera::handleObjectEvent, NULL);
}
// Set event handler
if(err == EDS_ERR_OK)
{
err = EdsSetPropertyEventHandler(camera_, kEdsPropertyEvent_All, &CanonEDCamera::handlePropertyEvent, NULL);
}
// Set event handler
if(err == EDS_ERR_OK)
{
err = EdsSetCameraStateEventHandler(camera_, kEdsStateEvent_All, &CanonEDCamera::handleStateEvent, NULL);
}
if(err == EDS_ERR_OK)
{
err = EdsOpenSession(camera_);
}
// Camera name
if (err == EDS_ERR_OK)
{
EdsDeviceInfo deviceInfo;
err = EdsGetDeviceInfo(camera_, &deviceInfo);
if (err == EDS_ERR_OK)
{
std::ostringstream os;
os << "Canon SLR device subtype: " << deviceInfo.deviceSubType;
LogMessage(os.str().c_str());
if (deviceInfo.deviceSubType == 0)
isLegacy_ = true;
cameraModel_ = deviceInfo.szDeviceDescription;
int nRet = CreateProperty("Model", cameraModel_.c_str(), MM::String, true);
if (nRet != DEVICE_OK)
return nRet;
}
// Set and Get various camera properties
// lock the UI before setting properties - only needed on legacy cameras
if (isLegacy_)
EdsSendStatusCommand (camera_, kEdsCameraStatusCommand_UILock, 0);
EdsSaveTo toPC = kEdsSaveTo_Host;
err = EdsSetPropertyData(camera_, kEdsPropID_SaveTo, 0 , sizeof(EdsSaveTo), &toPC);
if (isLegacy_)
EdsSendStatusCommand (camera_, kEdsCameraStatusCommand_UIUnLock, 0);
}
if (err == EDS_ERR_OK)
{
CPropertyAction* pAct = new CPropertyAction(this, &CanonEDCamera::OnBinning);
int nRet = CreateProperty(MM::g_Keyword_Binning, "1", MM::Integer, false, pAct);
if (nRet != DEVICE_OK)
return nRet;
}
if (err == EDS_ERR_OK)
{
return DEVICE_OK;
}
std::ostringstream os;
os << "Error during initialization: " << std::hex << err;
LogMessage(os.str().c_str());
return err;
}
