public void SetExposure(int value)
{
bool bval;
//ExposureTimeRaw
NODE_HANDLE m_hNode = new NODE_HANDLE();
m_hNode = m_imageProvider.GetNodeFromDevice("ExposureTimeRaw");
if (m_hNode.IsValid)
{
int inc = checked ((int)GenApi.IntegerGetInc(m_hNode));
int min = checked ((int)GenApi.IntegerGetMin(m_hNode));
int max = checked ((int)GenApi.IntegerGetMax(m_hNode));
int expVal = (value) - (value % inc);
if (expVal < min)
{
expVal = min;
}
if (expVal > max)
{
expVal = max;
}
if (!m_hNode.IsValid)
{
return;
}
bval = GenApi.NodeIsWritable(m_hNode);
if (!bval)
{
return;
}
GenApi.IntegerSetValue(m_hNode, expVal);
}
}
/* Loads config nodes and configures the basler camera. */
private void LoadConfigNodes(params string[] nodeNames)
{
foreach (var name in nodeNames)
{
var nodeConf = Config.GetConfig(name);
if (nodeConf == null || string.IsNullOrWhiteSpace(nodeConf))
{
continue;
}
if (!long.TryParse(nodeConf, out long value))
{
continue;
}
var node = ImageProvider.GetNodeFromDevice(name);
if (node.IsValid)
{
/* Is Writtable. */
if (GenApi.NodeIsWritable(node))
{
GenApi.IntegerSetValue(node, value);
}
}
}
}
/* If the device provides a heartbeat timeout, this function will set the heartbeat timeout.
* When the device provides the parameter, the old value is returned, -1 otherwise.
* The heartbeat timeout is a parameter provided by the transport layer.
* The transport layer parameters are exposed as a GenApi node map that
* can be retrieved from the device.
*/
private static long setHeartbeatTimeout(PYLON_DEVICE_HANDLE hDev, long timeout_ms)
{
NODEMAP_HANDLE hNodemap; /* Handle to the node map. */
NODE_HANDLE hNode; /* Handle to a node, i.e., a feature. */
long oldTimeout; /* The current timeout value. */
/* Get the node map for the transport layer parameters. */
hNodemap = Pylon.DeviceGetTLNodeMap(hDev);
if (!hNodemap.IsValid)
{
/* The device doesn't provide a transport layer node map. Nothing to do. */
Console.WriteLine("The device doesn't provide a transport layer node map. Cannot set heartbeat timeout.");
return(-1);
}
/* Get the node for the heartbeat timeout parameter. */
hNode = GenApi.NodeMapGetNode(hNodemap, "HeartbeatTimeout");
if (!hNode.IsValid)
{
/* There is no heartbeat timeout parameter. Nothing to do. */
Console.WriteLine("There is no heartbeat timeout parameter. Cannot set heartbeat timeout.");
return(-1);
}
/* Get the current value. */
oldTimeout = GenApi.IntegerGetValue(hNode);
/* Set the new value. */
GenApi.IntegerSetValue(hNode, timeout_ms);
/* Return the old value. */
return(oldTimeout);
}
public static void Write(PYLON_DEVICE_HANDLE deviceHandle, CameraProperty property)
{
if (!property.Supported || string.IsNullOrEmpty(property.Identifier))
{
return;
}
NODEMAP_HANDLE nodeMapHandle = Pylon.DeviceGetNodeMap(deviceHandle);
NODE_HANDLE nodeHandle = GenApi.NodeMapGetNode(nodeMapHandle, property.Identifier);
if (!nodeHandle.IsValid)
{
return;
}
EGenApiAccessMode accessMode = GenApi.NodeGetAccessMode(nodeHandle);
if (accessMode != EGenApiAccessMode.RW)
{
return;
}
switch (property.Type)
{
case CameraPropertyType.Integer:
{
long value = long.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
long step = long.Parse(property.Step, CultureInfo.InvariantCulture);
long remainder = value % step;
if (remainder > 0)
{
value = value - remainder;
}
GenApi.IntegerSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Float:
{
double value = double.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
GenApi.FloatSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Boolean:
{
bool value = bool.Parse(property.CurrentValue);
GenApi.BooleanSetValue(nodeHandle, value);
break;
}
default:
break;
}
}
private void OnValueChanged(object sender, EventArgs e)
{
if (m_hNode.IsValid)
{
try {
if (GenApi.NodeIsWritable(m_hNode))
{
/* Correct the increment of the new value. */
int value = (int)labelCurrentValue.Value;
/* Set the value. */
GenApi.IntegerSetValue(m_hNode, value);
}
}
catch {
/* Ignore any errors here. */
}
}
}
/* Handle slider position changes. */
private void slider_Scroll(object sender, EventArgs e)
{
if (m_hNode.IsValid)
{
try {
if (GenApi.NodeIsWritable(m_hNode))
{
/* Correct the increment of the new value. */
int value = slider.Value - ((slider.Value - slider.Minimum) % slider.SmallChange);
/* Set the value. */
GenApi.IntegerSetValue(m_hNode, value);
}
}
catch {
/* Ignore any errors here. */
}
}
}
public void valueChanged(int value)
{
if (m_hNode.IsValid)
{
try
{
if (GenApi.NodeIsWritable(m_hNode))
{
/* Correct the increment of the new value. */
/* Set the value. */
GenApi.IntegerSetValue(m_hNode, value);
}
}
catch
{
/* Ignore any errors here. */
}
}
}
/* This function demonstrates how to handle integer camera parameters. */
private static void demonstrateIntFeature(PYLON_DEVICE_HANDLE hDev)
{
NODEMAP_HANDLE hNodeMap;
NODE_HANDLE hNode;
string featureName = "Width"; /* Name of the feature used in this sample: AOI Width. */
long val, min, max, incr; /* Properties of the feature. */
EGenApiNodeType nodeType;
bool bval;
/* Get a handle for the device's node map. */
hNodeMap = Pylon.DeviceGetNodeMap(hDev);
/* Look up the feature node. */
hNode = GenApi.NodeMapGetNode(hNodeMap, featureName);
if (!hNode.IsValid)
{
Console.WriteLine("There is no feature named '" + featureName + "'.");
return;
}
/* We want an integer feature node. */
nodeType = GenApi.NodeGetType(hNode);
if (EGenApiNodeType.IntegerNode != nodeType)
{
Console.WriteLine("'" + featureName + "' is not an integer feature.");
return;
}
/*
* Query the current value, the range of allowed values, and the increment of the feature.
* For some integer features, you are not allowed to set every value within the
* value range. For example, for some cameras the Width parameter must be a multiple
* of 2. These constraints are expressed by the increment value. Valid values
* follow the rule: val >= min && val <= max && val == min + n * inc.
*/
bval = GenApi.NodeIsReadable(hNode);
if (bval)
{
min = GenApi.IntegerGetMin(hNode); /* Get the minimum value. */
max = GenApi.IntegerGetMax(hNode); /* Get the maximum value. */
incr = GenApi.IntegerGetInc(hNode); /* Get the increment value. */
val = GenApi.IntegerGetValue(hNode); /* Get the current value. */
Console.WriteLine("{0}: min= {1} max= {2} incr={3} Value={4}", featureName, min, max, incr, val);
bval = GenApi.NodeIsWritable(hNode);
if (bval)
{
/* Set the Width parameter half-way between minimum and maximum. */
val = min + (max - min) / incr / 2 * incr;
Console.WriteLine("Setting {0} to {1}", featureName, val);
GenApi.IntegerSetValue(hNode, val);
}
else
{
Console.WriteLine("Cannot set value for feature '{0}' - node not writable.", featureName);
}
}
else
{
Console.WriteLine("Cannot read feature '{0}' - node not readable.", featureName);
}
}
public static void Write(PYLON_DEVICE_HANDLE deviceHandle, CameraProperty property)
{
if (!property.Supported || string.IsNullOrEmpty(property.Identifier) || !deviceHandle.IsValid)
{
return;
}
// If "auto" flag is OFF we should write it first. On some cameras the value is not writable until the corresponding auto flag is off.
// If it's ON (continuous), it doesn't matter as our value will be overwritten soon anyway.
if (!string.IsNullOrEmpty(property.AutomaticIdentifier))
{
string enumValue = property.Automatic ? "Continuous" : "Off";
PylonHelper.WriteEnum(deviceHandle, property.AutomaticIdentifier, enumValue);
}
NODEMAP_HANDLE nodeMapHandle = Pylon.DeviceGetNodeMap(deviceHandle);
NODE_HANDLE nodeHandle = GenApi.NodeMapGetNode(nodeMapHandle, property.Identifier);
if (!nodeHandle.IsValid)
{
return;
}
EGenApiAccessMode accessMode = GenApi.NodeGetAccessMode(nodeHandle);
if (accessMode != EGenApiAccessMode.RW)
{
if (!string.IsNullOrEmpty(property.AutomaticIdentifier) && !property.Automatic)
{
log.ErrorFormat("Error while writing Basler Pylon GenICam property {0}.", property.Identifier);
log.ErrorFormat("The property is not writable.");
}
return;
}
try
{
switch (property.Type)
{
case CameraPropertyType.Integer:
{
long value = long.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
long step = long.Parse(property.Step, CultureInfo.InvariantCulture);
long remainder = value % step;
if (remainder > 0)
{
value = value - remainder;
}
GenApi.IntegerSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Float:
{
double max = GenApi.FloatGetMax(nodeHandle);
double min = GenApi.FloatGetMin(nodeHandle);
double value = double.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
value = Math.Min(Math.Max(value, min), max);
GenApi.FloatSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Boolean:
{
bool value = bool.Parse(property.CurrentValue);
GenApi.BooleanSetValue(nodeHandle, value);
break;
}
default:
break;
}
}
catch
{
log.ErrorFormat("Error while writing Basler Pylon GenICam property {0}.", property.Identifier);
}
}
/// <summary>
/// Write generic property with optional auto flag.
/// </summary>
private static void WriteProperty(PYLON_DEVICE_HANDLE deviceHandle, CameraProperty property)
{
if (property.ReadOnly)
{
return;
}
NODEMAP_HANDLE nodeMapHandle = Pylon.DeviceGetNodeMap(deviceHandle);
// Switch OFF the auto flag if needed, to be able to write the main property.
if (!string.IsNullOrEmpty(property.AutomaticIdentifier))
{
NODE_HANDLE nodeHandleAuto = GenApi.NodeMapGetNode(nodeMapHandle, property.AutomaticIdentifier);
if (nodeHandleAuto.IsValid)
{
bool writeable = GenApi.NodeIsWritable(nodeHandleAuto);
bool currentAuto = ReadAuto(nodeHandleAuto, property.AutomaticIdentifier);
if (writeable && property.CanBeAutomatic && currentAuto && !property.Automatic)
{
WriteAuto(nodeHandleAuto, property.AutomaticIdentifier, false);
}
}
}
// At this point the auto flag is off. Write the main property.
NODE_HANDLE nodeHandle = GenApi.NodeMapGetNode(nodeMapHandle, property.Identifier);
if (!nodeHandle.IsValid)
{
return;
}
EGenApiAccessMode accessMode = GenApi.NodeGetAccessMode(nodeHandle);
if (accessMode != EGenApiAccessMode.RW)
{
return;
}
try
{
switch (property.Type)
{
case CameraPropertyType.Integer:
{
long value = long.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
long min = GenApi.IntegerGetMin(nodeHandle);
long max = GenApi.IntegerGetMax(nodeHandle);
long step = GenApi.IntegerGetInc(nodeHandle);
value = FixValue(value, min, max, step);
GenApi.IntegerSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Float:
{
double value = double.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
double min = GenApi.FloatGetMin(nodeHandle);
double max = GenApi.FloatGetMax(nodeHandle);
value = FixValue(value, min, max);
GenApi.FloatSetValue(nodeHandle, value);
break;
}
case CameraPropertyType.Boolean:
{
bool value = bool.Parse(property.CurrentValue);
GenApi.BooleanSetValue(nodeHandle, value);
break;
}
default:
break;
}
}
catch
{
log.ErrorFormat("Error while writing Basler Pylon GenICam property {0}.", property.Identifier);
}
// Finally, switch ON the auto flag if needed.
if (!string.IsNullOrEmpty(property.AutomaticIdentifier))
{
NODE_HANDLE nodeHandleAuto = GenApi.NodeMapGetNode(nodeMapHandle, property.AutomaticIdentifier);
if (nodeHandleAuto.IsValid && GenApi.NodeIsWritable(nodeHandleAuto) && property.CanBeAutomatic && property.Automatic)
{
WriteAuto(nodeHandleAuto, property.AutomaticIdentifier, true);
}
}
}
/// <summary>
/// Write either width or height as a centered region of interest.
/// </summary>
private static void WriteSize(PYLON_DEVICE_HANDLE deviceHandle, CameraProperty property, string identifierOffset)
{
if (property.ReadOnly)
{
return;
}
NODEMAP_HANDLE nodeMapHandle = Pylon.DeviceGetNodeMap(deviceHandle);
NODE_HANDLE nodeHandle = GenApi.NodeMapGetNode(nodeMapHandle, property.Identifier);
if (!nodeHandle.IsValid)
{
return;
}
EGenApiAccessMode accessMode = GenApi.NodeGetAccessMode(nodeHandle);
if (accessMode != EGenApiAccessMode.RW)
{
return;
}
long value = long.Parse(property.CurrentValue, CultureInfo.InvariantCulture);
long min = GenApi.IntegerGetMin(nodeHandle);
long max = GenApi.IntegerGetMax(nodeHandle);
long step = GenApi.IntegerGetInc(nodeHandle);
value = FixValue(value, min, max, step);
// Offset handling.
// Some cameras have a CenterX/CenterY property.
// When it is set, the offset is automatic and becomes read-only.
bool setOffset = false;
NODE_HANDLE nodeHandleOffset = GenApi.NodeMapGetNode(nodeMapHandle, identifierOffset);
if (nodeHandleOffset.IsValid)
{
EGenApiAccessMode accessModeOffset = GenApi.NodeGetAccessMode(nodeHandleOffset);
if (accessModeOffset == EGenApiAccessMode.RW)
{
setOffset = true;
}
}
if (setOffset)
{
long offset = (max - value) / 2;
long minOffset = GenApi.IntegerGetMin(nodeHandleOffset);
long stepOffset = GenApi.IntegerGetInc(nodeHandleOffset);
long remainderOffset = (offset - minOffset) % stepOffset;
if (remainderOffset != 0)
{
offset = offset - remainderOffset + stepOffset;
}
// We need to be careful with the order and not write a value that doesn't fit due to the offset, or vice versa.
long currentValue = GenApi.IntegerGetValue(nodeHandle);
if (value > currentValue)
{
GenApi.IntegerSetValue(nodeHandleOffset, offset);
GenApi.IntegerSetValue(nodeHandle, value);
}
else
{
GenApi.IntegerSetValue(nodeHandle, value);
GenApi.IntegerSetValue(nodeHandleOffset, offset);
}
}
else
{
GenApi.IntegerSetValue(nodeHandle, value);
}
}
