Add Carotene - NVIDIA Hardware-Abstraction-Layer for ARM platforms

CMakeLists.txt

@@ -169,6 +169,7 @@ endif()
 OCV_OPTION(WITH_1394           "Include IEEE1394 support"                    ON   IF (NOT ANDROID AND NOT IOS AND NOT WINRT) )
 OCV_OPTION(WITH_AVFOUNDATION   "Use AVFoundation for Video I/O"              ON   IF IOS)
 OCV_OPTION(WITH_CARBON         "Use Carbon for UI instead of Cocoa"          OFF  IF APPLE )
+OCV_OPTION(WITH_CAROTENE       "Use NVidia carotene acceleration library for ARM platform"                   ON  IF (ARM OR AARCH64) AND NOT IOS AND NOT (CMAKE_VERSION VERSION_LESS "2.8.11"))
 OCV_OPTION(WITH_VTK            "Include VTK library support (and build opencv_viz module eiher)"             ON  IF (NOT ANDROID AND NOT IOS AND NOT WINRT AND NOT CMAKE_CROSSCOMPILING) )
 OCV_OPTION(WITH_CUDA           "Include NVidia Cuda Runtime support"                                         ON  IF (NOT IOS AND NOT WINRT) )
 OCV_OPTION(WITH_CUFFT          "Include NVidia Cuda Fast Fourier Transform (FFT) library support"            ON  IF (NOT IOS AND NOT WINRT) )
@@ -634,7 +635,20 @@ endmacro()
 if(NOT DEFINED OpenCV_HAL)
   set(OpenCV_HAL "OpenCV_HAL")
 endif()
+
+if(WITH_CAROTENE)
+  ocv_debug_message(STATUS "Enable carotene acceleration")
+  if(NOT ";${OpenCV_HAL};" MATCHES ";carotene;")
+    set(OpenCV_HAL "carotene;${OpenCV_HAL}")
+  endif()
+endif()
+
 foreach(hal ${OpenCV_HAL})
+  if(hal STREQUAL "carotene")
+    add_subdirectory(3rdparty/carotene/hal)
+    ocv_hal_register(CAROTENE_HAL_LIBRARIES CAROTENE_HAL_HEADERS CAROTENE_HAL_INCLUDE_DIRS)
+    list(APPEND OpenCV_USED_HAL "carotene (ver ${CAROTENE_HAL_VERSION})")
+  else()
     ocv_debug_message(STATUS "OpenCV HAL: ${hal} ...")
     ocv_clear_vars(OpenCV_HAL_LIBRARIES OpenCV_HAL_HEADERS OpenCV_HAL_INCLUDE_DIRS)
     find_package(${hal} NO_MODULE QUIET)
@@ -642,6 +656,7 @@ foreach(hal ${OpenCV_HAL})
       ocv_hal_register(OpenCV_HAL_LIBRARIES OpenCV_HAL_HEADERS OpenCV_HAL_INCLUDE_DIRS)
       list(APPEND OpenCV_USED_HAL "${hal} (ver ${${hal}_VERSION})")
     endif()
+  endif()
 endforeach()
 configure_file("${OpenCV_SOURCE_DIR}/cmake/templates/custom_hal.hpp.in" "${CMAKE_BINARY_DIR}/custom_hal.hpp" @ONLY)
 unset(_hal_includes)