Merge pull request #7518 from ArkadiuszRaj:aravis-buffer-status

Aravis several updates

* Fix adressing camera with id=0

* Aravis buffer property control & status added

* Modify of autoexposure algorith, ream frame ID from aravis + new properites

* Change of macro name

* VideoCapture now returns no frame on camera disconnecion

* Allow aravis-0.4 usage, proper camera object release.

CMakeLists.txt

@@ -1125,7 +1125,7 @@ if(DEFINED WITH_GIGEAPI)
 endif(DEFINED WITH_GIGEAPI)
 
 if(DEFINED WITH_ARAVIS)
-  status("    Aravis SDK:"     HAVE_ARAVIS_API     THEN YES                                        ELSE NO)
+  status("    Aravis SDK:"     HAVE_ARAVIS_API     THEN "YES (${ARAVIS_LIBRARIES})"                ELSE NO)
 endif(DEFINED WITH_ARAVIS)
 
 if(DEFINED APPLE)

cmake/OpenCVFindLibsVideo.cmake

@@ -129,9 +129,9 @@ ocv_clear_vars(HAVE_ARAVIS_API)
 if(WITH_ARAVIS)
   find_path(ARAVIS_INCLUDE_PATH "arv.h"
             PATHS /usr/local /var /opt /usr ENV ProgramFiles ENV ProgramW6432
-            PATH_SUFFIXES include "aravis-0.6"
+            PATH_SUFFIXES include "aravis-0.6" "aravis-0.4"
             DOC "The path to Aravis SDK headers")
-  find_library(ARAVIS_LIBRARIES "aravis-0.6")
+  find_library(ARAVIS_LIBRARIES NAMES "aravis-0.6" "aravis-0.4" )
   if(ARAVIS_LIBRARIES AND ARAVIS_INCLUDE_PATH)
     set(HAVE_ARAVIS_API TRUE)
   endif()