add bitflowsrc, a source for BitFlow framegrabbers

cmake/modules/FindBitflow.cmake

@@ -0,0 +1,42 @@
+# - Try to find Bitflow SDK
+# Once done this will define
+#
+#  BITFLOW_FOUND - system has Bitflow SDK
+#  BITFLOW_INCLUDE_DIR - the Bitflow SDK include directory
+#  BITFLOW_LIBRARIES - the libraries needed to use Bitflow SDK
+
+# Copyright (c) 2006, Tim Beaulen <tbscope@gmail.com>
+# Copyright (c) 2016 outside US, United States Government, Joshua M. Doe <oss@nvl.army.mil>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+if (NOT BITFLOW_DIR)
+    set (BITFLOW_DIR "C:/BitFlow SDK 6.20" CACHE PATH "Directory containing Bitflow SDK includes and libraries")
+endif ()
+
+if (CMAKE_SIZEOF_VOID_P MATCHES "8")
+    set(_LIB_PATH "${BITFLOW_DIR}/Lib64")
+else ()
+    set(_LIB_PATH "${BITFLOW_DIR}/Lib32")
+endif ()
+
+find_path (BITFLOW_INCLUDE_DIR BiApi.h
+    PATHS
+    "${BITFLOW_DIR}/Include"
+    DOC "Directory containing BiApi.h include file")
+
+find_library (_BidLib NAMES bid
+    PATHS
+    "${_LIB_PATH}")
+
+find_library (_BfdLib NAMES bfd
+    PATHS
+    "${_LIB_PATH}")
+
+set (BITFLOW_LIBRARIES ${_BidLib} ${_BfdLib})
+
+mark_as_advanced (_BidLib _BfdLib)
+
+include (FindPackageHandleStandardArgs)
+find_package_handle_standard_args (BITFLOW  DEFAULT_MSG  BITFLOW_INCLUDE_DIR BITFLOW_LIBRARIES)