uhd: cal: Use usrp::cal::database instead of CSV files

Now that we have cal::iq_cal and cal::database, there's no need to
manually wrangle CSV files for calibration data. This commit replaces
all CSV operations with cal::database calls and uses cal::iq_cal as
a container.

CSV files can still be read, but are considered deprecated.

1 files changed, 26 insertions, 0 deletions

diff --git a/host/lib/utils/paths.cpp b/host/lib/utils/paths.cpp
index ccf52f257..3ecd5fe38 100644
--- a/host/lib/utils/paths.cpp
+++ b/host/lib/utils/paths.cpp
@@ -8,6 +8,7 @@
 #include <uhd/config.hpp>
 #include <uhd/exception.hpp>
 #include <uhd/utils/paths.hpp>
+#include <uhd/utils/log.hpp>
 #include <uhdlib/utils/paths.hpp>
 #include <boost/algorithm/string.hpp>
 #include <boost/version.hpp>
@@ -189,6 +190,31 @@ std::string uhd::get_app_path(void)
     return uhd::get_tmp_path();
 }
 
+// Only used for deprecated CSV file loader. Delete this once CSV support is
+// removed.
+std::string uhd::get_appdata_path(void)
+{
+    const std::string uhdcalib_path = get_env_var("UHD_CONFIG_DIR");
+    if (not uhdcalib_path.empty()) {
+        UHD_LOG_WARNING("UHD",
+            "The environment variable UHD_CONFIG_DIR is deprecated. Refer to "
+            "https://files.ettus.com/manual/page_calibration.html for how to store "
+            "calibration data.");
+        return uhdcalib_path;
+    }
+
+    const std::string appdata_path = get_env_var("APPDATA");
+    if (not appdata_path.empty())
+        return appdata_path;
+
+    const std::string home_path = get_env_var("HOME");
+    if (not home_path.empty())
+        return home_path;
+
+    return uhd::get_tmp_path();
+}
+
+
 #if BOOST_VERSION >= 106100
 std::string uhd::get_pkg_path(void)
 {