allow setting gains for two cameras, just a hack

minimal_pylon.cpp

@@ -34,17 +34,32 @@ typedef high_resolution_clock Time;
 typedef milliseconds ms;
 typedef duration<float> fsec;
 
+
 uint32_t sensorHeight(CInstantCamera &camera) {
   CIntegerParameter maxheight( camera.GetNodeMap(), "SensorHeight" );
   return maxheight.GetValue();
 }
 
+
 uint32_t sensorWidth(CInstantCamera &camera) {
   CIntegerParameter maxwidth( camera.GetNodeMap(), "SensorWidth" );
   return maxwidth.IsValid() && maxwidth.IsReadable() ? maxwidth.GetValue() : 0;
 }
 
-//void exposureTime(double exposure_time);
+
+void exposureTime(CInstantCamera &camera, double exposure_time) {
+  GenApi::INodeMap& nodemap = camera.GetNodeMap();
+  CFloatParameter(nodemap, "ExposureTime").SetValue(exposure_time);
+}
+
+
+void detectorGain(CInstantCamera &camera, double gain) {
+  GenApi::INodeMap& nodemap = camera.GetNodeMap();
+  CEnumParameter(nodemap, "GainAuto").SetValue("Off");
+  CEnumParameter(nodemap, "GainSelector").SetValue("All");
+  CFloatParameter(nodemap, "Gain").SetValue(gain);
+}
+
 
 int main( int argc, char* argv[] ) {
   uint32_t frameCount = 100;
@@ -59,6 +74,8 @@ int main( int argc, char* argv[] ) {
   int xOffset = 0;
   int yOffset = 0;
   int camIndex = 0;
+  double exposure_time = 10000;
+  double gains[2] = {5.0, 5.0};
   string errorMessage = "";
   String_t filename = "_TestVideo.mp4";
   
@@ -72,6 +89,9 @@ int main( int argc, char* argv[] ) {
 	   << "\t --height|-h \t the image height in pixel, defaults to 2000\n"
 	   << "\t --xoffs|-x \t image x offset in pixel, defaults to 0\n"
 	   << "\t --yoffs|-y \t image y-offset in pixel, defaults to 0\n"	
+	   << "\t --exposure|-e \t exposure time in us, defaults to 10000\n"
+	   << "\t --gain1|-g1 \t gain for camera 1 in db, defaults to 5.0\n"
+	   << "\t --gain2|-g2 \t gain for camera 2 in db, defaults to 5.0\n"
 	   << "\t --cameras|-c \t the desired number of cameras to grab at the same time, defaults to 1\n"
 	   << "\t --framecount|-n \t the number of frames, defaults to 100\n"
 	   << "\t --quality|-q \t the qualtiy of the compression (0 < q <= 100), defaults to 50\n"
@@ -100,6 +120,23 @@ int main( int argc, char* argv[] ) {
     if ((arg == "--yoffs" || arg == "-y") && i + 1 < argc) {
       yOffset = std::atoi(argv[++i]);
     }
+    if ((arg == "--exposure" || arg == "-e") && i + 1 < argc) {
+      exposure_time = std::atoi(argv[++i]);
+    }
+    if ((arg == "--gain1" || arg == "-g1") && i + 1 < argc) {
+      try {
+	gains[0] = std::stod(argv[++i]);
+      } catch (...) {
+	gains[0] = 5.0;
+      }
+    }
+    if ((arg == "--gain2" || arg == "-g2") && i + 1 < argc) {
+      try {
+	gains[1] = std::stod(argv[++i]);
+      } catch (...) {
+	gains[1] = 5.0;
+      }
+    }
     if ((arg == "--index" || arg == "-i") && i + 1 < argc) {
       camIndex = std::atoi(argv[++i]);
     }
@@ -157,7 +194,8 @@ int main( int argc, char* argv[] ) {
       CEnumParameter pixelFormat( nodemap, "PixelFormat" );
       CEnumParameter trigmode( nodemap, "TriggerMode");
       CEnumParameter trigsource( nodemap, "TriggerSource");
-
+      exposureTime( cameras[i], exposure_time );
+      detectorGain( cameras[i], gains[i] ); 
       trigmode.TrySetValue( "On" );
       trigsource.TrySetValue( "Software" );
       width.TrySetValue( cWidth, IntegerValueCorrection_Nearest );
@@ -236,6 +274,7 @@ int main( int argc, char* argv[] ) {
       for  ( int i =0; i < camCount; ++i ) {
 	success = success & frames[i]->GrabSucceeded();
       }
+      
       if (success) {
 	if ( camCount > 1 ) {
 	  leftImage.AttachGrabResultBuffer( frames[0] );