uhd: C API wrapper

* multi_usrp, multi_usrp_clock, and associated classes accessible through C
* Added Doxygen documentation explaining structure and API
* Simple RX and TX streaming examples
* Unit tests for different parts of C interface and C++ error conversion

1 files changed, 40 insertions, 0 deletions

diff --git a/host/lib/error_c.cpp b/host/lib/error_c.cpp
new file mode 100644
index 000000000..c3a83eec9
--- /dev/null
+++ b/host/lib/error_c.cpp
@@ -0,0 +1,40 @@
+//
+// Copyright 2015 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/error.h>
+#include <uhd/exception.hpp>
+
+#define MAP_TO_ERROR(exception_type, error_type) \
+    if (dynamic_cast<const uhd::exception_type*>(e)) return error_type;
+
+uhd_error error_from_uhd_exception(const uhd::exception* e){
+    MAP_TO_ERROR(index_error,           UHD_ERROR_INDEX)
+    MAP_TO_ERROR(key_error,             UHD_ERROR_KEY)
+    MAP_TO_ERROR(not_implemented_error, UHD_ERROR_NOT_IMPLEMENTED)
+    MAP_TO_ERROR(usb_error,             UHD_ERROR_USB)
+    MAP_TO_ERROR(io_error,              UHD_ERROR_IO)
+    MAP_TO_ERROR(os_error,              UHD_ERROR_OS)
+    MAP_TO_ERROR(assertion_error,       UHD_ERROR_ASSERTION)
+    MAP_TO_ERROR(lookup_error,          UHD_ERROR_LOOKUP)
+    MAP_TO_ERROR(type_error,            UHD_ERROR_TYPE)
+    MAP_TO_ERROR(value_error,           UHD_ERROR_VALUE)
+    MAP_TO_ERROR(runtime_error,         UHD_ERROR_RUNTIME)
+    MAP_TO_ERROR(environment_error,     UHD_ERROR_ENVIRONMENT)
+    MAP_TO_ERROR(system_error,          UHD_ERROR_SYSTEM)
+
+    return UHD_ERROR_EXCEPT;
+}