Fix IS_INVALID_BUFFER_SIZE bug. Consider absolute X and Y for memory … (

anqixu#107)

* Fix IS_INVALID_BUFFER_SIZE bug when trying to use absolute X and Y for memory allocation (caused an ini or on cam setting)
* Avoid bug by intentionally ignoring the absolute positioning

src/ueye_cam_driver.cpp

@@ -1074,6 +1074,34 @@ INT UEyeCamDriver::syncCamConfig(string dft_mode_str) {
       cam_name_ << "] (" << err2str(is_err) << ")");
     return is_err;
   }
+
+  // Check if absolute AOI positioning is set in the cam (e.g. by an .ini)
+  // if yes, deactivate it as it is intentionally not supported by this driver
+  UINT start_posX_absolute = 0;
+  UINT start_posY_absolute = 0;
+
+  if ((is_err = is_AOI(cam_handle_, IS_AOI_IMAGE_GET_POS_X_ABS,
+      (void*) &start_posX_absolute, sizeof(start_posX_absolute))) != IS_SUCCESS) {
+    ERROR_STREAM("Could not retrieve Area Of Interest (AOI) information for parameter start X absolute for [" <<
+      cam_name_ << "] (" << err2str(is_err) << ")");
+    return is_err;
+  }
+
+  if ((is_err = is_AOI(cam_handle_, IS_AOI_IMAGE_GET_POS_Y_ABS,
+      (void*) &start_posY_absolute, sizeof(start_posY_absolute))) != IS_SUCCESS) {
+    ERROR_STREAM("Could not retrieve Area Of Interest (AOI) information for parameter start Y absolute for [" <<
+      cam_name_ << "] (" << err2str(is_err) << ")");
+    return is_err;
+  }
+
+  if ((start_posX_absolute == IS_AOI_IMAGE_POS_ABSOLUTE) ||  (start_posY_absolute == IS_AOI_IMAGE_POS_ABSOLUTE)) {
+    cam_aoi_.s32X = cam_aoi_.s32X & ~(IS_AOI_IMAGE_POS_ABSOLUTE); // Remove the bit which was set by the bitwise OR with IS_AOI_IMAGE_POS_ABSOLUTE
+    cam_aoi_.s32Y = cam_aoi_.s32Y & ~(IS_AOI_IMAGE_POS_ABSOLUTE);
+    WARN_STREAM("AOI absolute positioning intentionally not supported, ignoring for [" << cam_name_ << "]");
+    if ((is_err = setResolution(cam_aoi_.s32Width, cam_aoi_.s32Height,
+      cam_aoi_.s32X, cam_aoi_.s32Y, false)) != IS_SUCCESS) return is_err;
+  }
+
   color_mode_ = is_SetColorMode(cam_handle_, IS_GET_COLOR_MODE);
   if (!isSupportedColorMode(color_mode_)) {
     WARN_STREAM("Current color mode (IDS format: " << colormode2str(color_mode_)
@@ -1173,10 +1201,10 @@ INT UEyeCamDriver::reallocateCamBuffer() {
       cam_name_ << "] (" << err2str(is_err) << ")");
     return is_err;
   }
-
+  
   // Allocate new memory section for IDS driver to use as frame buffer
-  if ((is_err = is_AllocImageMem(cam_handle_, cam_aoi_.s32Width, cam_aoi_.s32Height,
-      bits_per_pixel_, &cam_buffer_, &cam_buffer_id_)) != IS_SUCCESS) {
+  if ((is_err = is_AllocImageMem(cam_handle_, cam_aoi_.s32Width , cam_aoi_.s32Height,
+    bits_per_pixel_, &cam_buffer_, &cam_buffer_id_)) != IS_SUCCESS) {
     ERROR_STREAM("Failed to allocate " << cam_aoi_.s32Width << " x " << cam_aoi_.s32Height <<
       " image buffer for [" << cam_name_ << "]");
     return is_err;