Exposure_C¶
Exposure_C.c shows how to set a custom exposure time on a device. It relies on information provided in the Enumeration_C, Acquisition_C, and NodeMapInfo_C examples.
//=============================================================================
// Copyright (c) 2026 FLIR Integrated Imaging Solutions, Inc. All Rights Reserved.
//
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// Integrated Imaging Solutions, Inc. ("Confidential Information"). You
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// with FLIR Integrated Imaging Solutions, Inc. (FLIR).
//
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// SOFTWARE, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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//=============================================================================
/**
* @example Exposure_C.c
*
* @brief Exposure_C.c shows how to set a custom exposure time on a device.
* It relies on information provided in the Enumeration_C, Acquisition_C, and
* NodeMapInfo_C examples.
*
* This example shows the processes of preparing the camera, setting a custom
* exposure time, and restoring the camera to a normal state (without power
* cycling). Ensuring custom values do not fall out of range is also touched
* on.
*
* Following this, we suggest familiarizing yourself with the
* ImageFormatControl_C example if you haven't already. ImageFormatControl_C
* is another example on camera customization that is shorter and simpler than
* many of the others. Once comfortable with Exposure_C and
* ImageFormatControl_C, we suggest checking out any of the longer, more
* complicated examples related to camera configuration: ChunkData_C,
* LookupTable_C, Sequencer_C, or Trigger_C.
*
* Please leave us feedback at: https://www.surveymonkey.com/r/TDYMVAPI
* More source code examples at: https://github.com/Teledyne-MV/Spinnaker-Examples
* Need help? Check out our forum at: https://teledynevisionsolutions.zendesk.com/hc/en-us/community/topics
*/
#include "SpinnakerC.h"
#include "stdio.h"
#include "string.h"
// This macro helps with C-strings.
#define MAX_BUFF_LEN 256
char lastErrorMessage[MAX_BUFF_LEN];
size_t lenLastErrorMessage = MAX_BUFF_LEN;
// Helper for getting error messages
char* GetLastErrorMessage()
{
// Note: lastErrorMessage is shared across multiple threads; a different thread could overwrite the last error
// message before this function is called to grab the latest message
spinErrorGetLastMessage(lastErrorMessage, &lenLastErrorMessage);
return lastErrorMessage;
}
// This function helps to check if a node is readable
bool8_t IsReadable(spinNodeHandle hNode, char nodeName[])
{
spinError err = SPINNAKER_ERR_SUCCESS;
bool8_t pbReadable = False;
err = spinNodeIsReadable(hNode, &pbReadable);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to retrieve node readability (%s node) with error: %s [%d]\n\n",
nodeName,
GetLastErrorMessage(),
err);
}
return pbReadable;
}
// This function helps to check if a node is writable
bool8_t IsWritable(spinNodeHandle hNode, char nodeName[])
{
spinError err = SPINNAKER_ERR_SUCCESS;
bool8_t pbWritable = False;
err = spinNodeIsWritable(hNode, &pbWritable);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to retrieve node writability (%s node) with error: %s [%d]\n\n",
nodeName,
GetLastErrorMessage(),
err);
}
return pbWritable;
}
// This function handles the error prints when a node or entry is unavailable or
// not readable/writable on the connected camera
void PrintRetrieveNodeFailure(char node[], char name[])
{
printf("Unable to get %s (%s %s retrieval failed).\n\n", node, name, node);
}
// This function configures a custom exposure time. Automatic exposure is turned
// off in order to allow for the customization, and then the custom setting is
// applied.
spinError ConfigureExposure(spinNodeMapHandle hNodeMap)
{
spinError err = SPINNAKER_ERR_SUCCESS;
printf("\n\n*** CONFIGURING EXPOSURE ***\n\n");
//
// Turn off automatic exposure mode
//
// *** NOTES ***
// Automatic exposure prevents the manual configuration of exposure
// time and needs to be turned off.
//
// *** LATER ***
// Exposure time can be set automatically or manually as needed. This
// example turns automatic exposure off to set it manually and back on
// in order to return the camera to its default state.
//
spinNodeHandle hExposureAuto = NULL;
spinNodeHandle hExposureAutoOff = NULL;
int64_t exposureAutoOff = 0;
// Retrieve enumeration node from nodemap
err = spinNodeMapGetNode(hNodeMap, "ExposureAuto", &hExposureAuto);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to disable automatic exposure (node retrieval). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
// Retrieve entry node from enumeration node
if (IsReadable(hExposureAuto, "ExposureAuto"))
{
err = spinEnumerationGetEntryByName(hExposureAuto, "Off", &hExposureAutoOff);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to disable automatic exposure (enum entry retrieval). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("node", "ExposureAuto");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Retrieve integer value from entry node
if (IsReadable(hExposureAutoOff, "ExposureAutoOff"))
{
err = spinEnumerationEntryGetIntValue(hExposureAutoOff, &exposureAutoOff);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to disable automatic exposure (enum entry int value retrieval). Aborting with error %d...\n",
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("entry", "ExposureAuto 'Off'");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Set integer as new value for enumeration node
if (IsWritable(hExposureAuto, "ExposureAuto"))
{
err = spinEnumerationSetIntValue(hExposureAuto, exposureAutoOff);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to disable automatic exposure (enum entry setting). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
printf("Automatic exposure disabled...\n");
}
else
{
PrintRetrieveNodeFailure("node", "ExposureAuto");
return SPINNAKER_ERR_ACCESS_DENIED;
}
//
// Set exposure time manually; exposure time recorded in microseconds
//
// *** NOTES ***
// It is ensured that the desired exposure time does not exceed the maximum.
// Exposure time is counted in microseconds - this can be found out either
// by retrieving the unit with the spinFloatGetUnit() methods or by
// checking SpinView.
//
spinNodeHandle hExposureTime = NULL;
double exposureTimeMax = 0.0;
double exposureTimeToSet = 500000.0;
// Retrieve exposure time node
err = spinNodeMapGetNode(hNodeMap, "ExposureTime", &hExposureTime);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to set exposure time. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Retrieve maximum value
if (IsReadable(hExposureTime, "ExposureTime"))
{
err = spinFloatGetMax(hExposureTime, &exposureTimeMax);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to set exposure time. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("node", "ExposureTime");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Ensure desired exposure time does not exceed maximum
if (exposureTimeToSet > exposureTimeMax)
{
exposureTimeToSet = exposureTimeMax;
}
// Set desired exposure time as new value
if (IsWritable(hExposureTime, "ExposureTime"))
{
err = spinFloatSetValue(hExposureTime, exposureTimeToSet);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to set exposure time. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
printf("Exposure time set to %f us...\n", exposureTimeToSet);
}
else
{
PrintRetrieveNodeFailure("node", "ExposureTime");
return SPINNAKER_ERR_ACCESS_DENIED;
}
return err;
}
spinError ResetExposure(spinNodeHandle hNodeMap)
{
spinError err = SPINNAKER_ERR_SUCCESS;
//
// Turn automatic exposure back on
//
// *** NOTES ***
// It is recommended to have automatic exposure enabled whenever manual
// exposure settings are not required.
//
spinNodeHandle hExposureAuto = NULL;
spinNodeHandle hExposureAutoContinuous = NULL;
int64_t exposureAutoContinuous = 0;
// Retrieve enumeration node from nodemap
err = spinNodeMapGetNode(hNodeMap, "ExposureAuto", &hExposureAuto);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to enable automatic exposure (node retrieval). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
// Retrieve entry node from enumeration node
if (IsReadable(hExposureAuto, "ExposureAuto"))
{
err = spinEnumerationGetEntryByName(hExposureAuto, "Continuous", &hExposureAutoContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to enable automatic exposure (enum entry retrieval). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("node", "ExposureAuto");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Retrieve integer value from entry node
if (IsReadable(hExposureAutoContinuous, "ExposureAutoContinuous"))
{
err = spinEnumerationEntryGetIntValue(hExposureAutoContinuous, &exposureAutoContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to enable automatic exposure (enum entry int value retrieval). Aborting with error %d...\n",
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("entry", "ExposureAuto 'Continuous'");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Set integer as new value for enumeration node
if (IsWritable(hExposureAuto, "ExposureAuto"))
{
err = spinEnumerationSetIntValue(hExposureAuto, exposureAutoContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to enable automatic exposure (enum entry setting). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
printf("Automatic exposure enabled...\n\n");
}
else
{
PrintRetrieveNodeFailure("node", "ExposureAuto");
return SPINNAKER_ERR_ACCESS_DENIED;
}
return err;
}
// This function prints the device information of the camera from the transport
// layer; please see NodeMapInfo_C example for more in-depth comments on
// printing device information from the nodemap.
spinError PrintDeviceInfo(spinNodeMapHandle hNodeMap)
{
spinError err = SPINNAKER_ERR_SUCCESS;
unsigned int i = 0;
printf("\n*** DEVICE INFORMATION ***\n\n");
// Retrieve device information category node
spinNodeHandle hDeviceInformation = NULL;
err = spinNodeMapGetNode(hNodeMap, "DeviceInformation", &hDeviceInformation);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve node. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Retrieve number of nodes within device information node
size_t numFeatures = 0;
if (IsReadable(hDeviceInformation, "DeviceInformation"))
{
err = spinCategoryGetNumFeatures(hDeviceInformation, &numFeatures);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve number of nodes. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("node", "DeviceInformation");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Iterate through nodes and print information
for (i = 0; i < numFeatures; i++)
{
spinNodeHandle hFeatureNode = NULL;
err = spinCategoryGetFeatureByIndex(hDeviceInformation, i, &hFeatureNode);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve node. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
continue;
}
spinNodeType featureType = UnknownNode;
// get feature node name
char featureName[MAX_BUFF_LEN];
size_t lenFeatureName = MAX_BUFF_LEN;
err = spinNodeGetName(hFeatureNode, featureName, &lenFeatureName);
if (err != SPINNAKER_ERR_SUCCESS)
{
strcpy(featureName, "Unknown name");
}
if (IsReadable(hFeatureNode, featureName))
{
err = spinNodeGetType(hFeatureNode, &featureType);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve node type. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
continue;
}
}
else
{
printf("%s: Node not readable\n", featureName);
continue;
}
char featureValue[MAX_BUFF_LEN];
size_t lenFeatureValue = MAX_BUFF_LEN;
err = spinNodeToString(hFeatureNode, featureValue, &lenFeatureValue);
if (err != SPINNAKER_ERR_SUCCESS)
{
strcpy(featureValue, "Unknown value");
}
printf("%s: %s\n", featureName, featureValue);
}
printf("\n");
return err;
}
// This function acquires and saves 10 images from a device; please see
// Acquisition_C example for more in-depth comments on the acquisition of
// images.
spinError AcquireImages(spinCamera hCam, spinNodeMapHandle hNodeMap, spinNodeMapHandle hNodeMapTLDevice)
{
spinError err = SPINNAKER_ERR_SUCCESS;
printf("\n*** IMAGE ACQUISITION ***\n\n");
// Set acquisition mode to continuous
spinNodeHandle hAcquisitionMode = NULL;
spinNodeHandle hAcquisitionModeContinuous = NULL;
int64_t acquisitionModeContinuous = 0;
err = spinNodeMapGetNode(hNodeMap, "AcquisitionMode", &hAcquisitionMode);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to set acquisition mode to continuous (node retrieval). Aborting with error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
return err;
}
if (IsReadable(hAcquisitionMode, "AcquisitionMode"))
{
err = spinEnumerationGetEntryByName(hAcquisitionMode, "Continuous", &hAcquisitionModeContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to set acquisition mode to continuous (entry 'continuous' retrieval). Aborting with error "
"%d...\n\n",
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("entry", "AcquistionMode");
return SPINNAKER_ERR_ACCESS_DENIED;
}
if (IsReadable(hAcquisitionModeContinuous, "AcquisitionModeContinuous"))
{
err = spinEnumerationEntryGetIntValue(hAcquisitionModeContinuous, &acquisitionModeContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to set acquisition mode to continuous (entry int value retrieval). Aborting with error "
"%d...\n\n",
err);
return err;
}
}
else
{
PrintRetrieveNodeFailure("entry", "AcquisitionMode 'Continuous'");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// set acquisition mode to continuous
if (IsWritable(hAcquisitionMode, "AcquisitionMode"))
{
err = spinEnumerationSetIntValue(hAcquisitionMode, acquisitionModeContinuous);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to set acquisition mode to continuous (entry int value setting). Aborting with error %d...\n\n",
err);
return err;
}
printf("Acquisition mode set to continuous...\n");
}
else
{
PrintRetrieveNodeFailure("node", "AcquisitionMode");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Begin acquiring images
err = spinCameraBeginAcquisition(hCam);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to begin image acquisition. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
printf("Acquiring images...\n");
// Retrieve device serial number for filename
spinNodeHandle hDeviceSerialNumber = NULL;
char deviceSerialNumber[MAX_BUFF_LEN];
size_t lenDeviceSerialNumber = MAX_BUFF_LEN;
err = spinNodeMapGetNode(hNodeMapTLDevice, "DeviceSerialNumber", &hDeviceSerialNumber);
if (err != SPINNAKER_ERR_SUCCESS)
{
strcpy(deviceSerialNumber, "");
lenDeviceSerialNumber = 0;
}
else
{
if (IsReadable(hDeviceSerialNumber, "DeviceSerialNumber"))
{
err = spinStringGetValue(hDeviceSerialNumber, deviceSerialNumber, &lenDeviceSerialNumber);
if (err != SPINNAKER_ERR_SUCCESS)
{
strcpy(deviceSerialNumber, "");
lenDeviceSerialNumber = 0;
}
printf("Device serial number retrieved as %s...\n", deviceSerialNumber);
}
else
{
PrintRetrieveNodeFailure("node", "DeviceSerialNumber");
strcpy(deviceSerialNumber, "");
lenDeviceSerialNumber = 0;
}
}
printf("\n");
// Get the value of exposure time to set an appropriate timeout for GetNextImage
spinNodeHandle hExposureTime = NULL;
double exposureTime;
uint64_t timeout;
err = spinNodeMapGetNode(hNodeMap, "ExposureTime", &hExposureTime);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to get exposure time node. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
if (IsReadable(hExposureTime, "ExposureTime"))
{
err = spinFloatGetValue(hExposureTime, &exposureTime);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to read exposure time. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
else
{
// The exposure time is retrieved in µs so it needs to be converted to ms to keep consistency with the unit
// being used in GetNextImage
timeout = (uint64_t)(exposureTime / 1000 + 1000);
}
}
else
{
PrintRetrieveNodeFailure("node", "ExposureTime");
return SPINNAKER_ERR_ACCESS_DENIED;
}
// Retrieve, convert, and save images
const unsigned int k_numImages = 5;
unsigned int imageCnt = 0;
//
// Create Image Processor context for post processing images
//
spinImageProcessor hImageProcessor = NULL;
err = spinImageProcessorCreate(&hImageProcessor);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to create image processor. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
//
// Set default image processor color processing method
//
// *** NOTES ***
// By default, if no specific color processing algorithm is set, the image
// processor will default to NEAREST_NEIGHBOR method.
//
err = spinImageProcessorSetColorProcessing(hImageProcessor, SPINNAKER_COLOR_PROCESSING_ALGORITHM_HQ_LINEAR);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf(
"Unable to set image processor color processing method. Non-fatal error: %s [%d]\n\n",
GetLastErrorMessage(),
err);
}
for (imageCnt = 0; imageCnt < k_numImages; imageCnt++)
{
// Retrieve next received image
// By default, GetNextImage will block indefinitely until an image arrives.
// In this example, the timeout value is set to [exposure time + 1000]ms to ensure that an image has enough
// time to arrive under normal conditions
spinImage hResultImage = NULL;
err = spinCameraGetNextImageEx(hCam, timeout, &hResultImage);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to get next image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
continue;
}
// Ensure image completion
bool8_t isIncomplete = False;
bool8_t hasFailed = False;
err = spinImageIsIncomplete(hResultImage, &isIncomplete);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to determine image completion. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
hasFailed = True;
}
if (isIncomplete)
{
spinImageStatus imageStatus = SPINNAKER_IMAGE_STATUS_NO_ERROR;
err = spinImageGetStatus(hResultImage, &imageStatus);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve image status. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
else
{
printf("Image incomplete with image status %d...\n", imageStatus);
}
hasFailed = True;
}
// Release incomplete or failed image
if (hasFailed)
{
err = spinImageRelease(hResultImage);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to release image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
continue;
}
// Print image information
size_t width = 0;
size_t height = 0;
err = spinImageGetWidth(hResultImage, &width);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve image width. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
err = spinImageGetHeight(hResultImage, &height);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve image height. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
hasFailed = True;
}
printf("Grabbed image %u, width = %u, height = %u\n", imageCnt, (unsigned int)width, (unsigned int)height);
// Convert image to mono 8
spinImage hConvertedImage = NULL;
err = spinImageCreateEmpty(&hConvertedImage);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to create image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
hasFailed = True;
}
err = spinImageProcessorConvert(hImageProcessor, hResultImage, hConvertedImage, PixelFormat_Mono8);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to convert image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
hasFailed = True;
}
// Create unique file name
char filename[MAX_BUFF_LEN];
if (lenDeviceSerialNumber == 0)
{
sprintf(filename, "Exposure-C-%d.jpg", imageCnt);
}
else
{
sprintf(filename, "Exposure-C-%s-%d.jpg", deviceSerialNumber, imageCnt);
}
// Save image
err = spinImageSave(hConvertedImage, filename, SPINNAKER_IMAGE_FILE_FORMAT_JPEG);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to save image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
else
{
printf("Image saved at %s\n\n", filename);
}
// Destroy converted image
err = spinImageDestroy(hConvertedImage);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to destroy image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
// Release image
err = spinImageRelease(hResultImage);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to release image. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
}
//
// Destroy Image Processor context
//
// *** NOTES ***
// Image processor context needs to be destroyed after all image processing
// are complete to avoid memory leaks.
//
err = spinImageProcessorDestroy(hImageProcessor);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to destroy image processor. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
// End Acquisition
err = spinCameraEndAcquisition(hCam);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to end acquisition. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
return err;
}
// This function acts as the body of the example; please see NodeMapInfo_C
// example for more in-depth comments on setting up cameras.
spinError RunSingleCamera(spinCamera hCam)
{
spinError err = SPINNAKER_ERR_SUCCESS;
// Retrieve TL device nodemap and print device information
spinNodeMapHandle hNodeMapTLDevice = NULL;
err = spinCameraGetTLDeviceNodeMap(hCam, &hNodeMapTLDevice);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve TL device nodemap. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
else
{
err = PrintDeviceInfo(hNodeMapTLDevice);
}
// Initialize camera
err = spinCameraInit(hCam);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to initialize camera. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Retrieve GenICam nodemap
spinNodeMapHandle hNodeMap = NULL;
err = spinCameraGetNodeMap(hCam, &hNodeMap);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve GenICam nodemap. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Configure exposure
err = ConfigureExposure(hNodeMap);
if (err != SPINNAKER_ERR_SUCCESS)
{
return err;
}
// Acquire images
err = AcquireImages(hCam, hNodeMap, hNodeMapTLDevice);
if (err != SPINNAKER_ERR_SUCCESS)
{
return err;
}
// Reset exposure
err = ResetExposure(hNodeMap);
if (err != SPINNAKER_ERR_SUCCESS)
{
return err;
}
// Deinitialize camera
err = spinCameraDeInit(hCam);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to deinitialize camera. Non-fatal error: %s [%d]\n\n", GetLastErrorMessage(), err);
}
return err;
}
// Example entry point; please see Enumeration_C example for more in-depth
// comments on preparing and cleaning up the system.
int main(/*int argc, char** argv*/)
{
spinError errReturn = SPINNAKER_ERR_SUCCESS;
spinError err = SPINNAKER_ERR_SUCCESS;
unsigned int i = 0;
// Since this application saves images in the current folder
// we must ensure that we have permission to write to this folder.
// If we do not have permission, fail right away.
FILE* tempFile;
tempFile = fopen("test.txt", "w+");
if (tempFile == NULL)
{
printf("Failed to create file in current folder. Please check "
"permissions.\n");
printf("Press Enter to exit...\n");
getchar();
return -1;
}
fclose(tempFile);
remove("test.txt");
// Print application build information
printf("Application build date: %s %s \n\n", __DATE__, __TIME__);
// Retrieve singleton reference to system object
spinSystem hSystem = NULL;
err = spinSystemGetInstance(&hSystem);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve system instance. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Print out current library version
spinLibraryVersion hLibraryVersion;
spinSystemGetLibraryVersion(hSystem, &hLibraryVersion);
printf(
"Spinnaker library version: %d.%d.%d.%d\n\n",
hLibraryVersion.major,
hLibraryVersion.minor,
hLibraryVersion.type,
hLibraryVersion.build);
// Retrieve list of cameras from the system
spinCameraList hCameraList = NULL;
err = spinCameraListCreateEmpty(&hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to create camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
err = spinSystemGetCameras(hSystem, hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Retrieve number of cameras
size_t numCameras = 0;
err = spinCameraListGetSize(hCameraList, &numCameras);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve number of cameras. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
printf("Number of cameras detected: %u\n\n", (unsigned int)numCameras);
// Finish if there are no cameras
if (numCameras == 0)
{
// Clear and destroy camera list before releasing system
err = spinCameraListClear(hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to clear camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
err = spinCameraListDestroy(hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to destroy camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Release system
err = spinSystemReleaseInstance(hSystem);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to release system instance. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
printf("Not enough cameras!\n");
printf("Done! Press Enter to exit...\n");
getchar();
return -1;
}
// Run example on each camera
for (i = 0; i < numCameras; i++)
{
printf("\nRunning example for camera %d...\n", i);
// Select camera
spinCamera hCamera = NULL;
err = spinCameraListGet(hCameraList, i, &hCamera);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to retrieve camera from list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
errReturn = err;
}
else
{
// Run example
err = RunSingleCamera(hCamera);
if (err != SPINNAKER_ERR_SUCCESS)
{
errReturn = err;
}
}
err = spinCameraRelease(hCamera);
if (err != SPINNAKER_ERR_SUCCESS)
{
errReturn = err;
}
printf("Camera %d example complete...\n\n", i);
}
// Clear and destroy camera list before releasing system
err = spinCameraListClear(hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to clear camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
err = spinCameraListDestroy(hCameraList);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to destroy camera list. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
// Release system
err = spinSystemReleaseInstance(hSystem);
if (err != SPINNAKER_ERR_SUCCESS)
{
printf("Unable to release system instance. Aborting with error: %s [%d]\n\n", GetLastErrorMessage(), err);
return err;
}
printf("\nDone! Press Enter to exit...\n");
getchar();
return errReturn;
}