Added a vrt library to pack and unpack from metadata.

Added a vrt test app that packs and unpacks the data.

2 files changed, 98 insertions, 0 deletions

diff --git a/host/test/CMakeLists.txt b/host/test/CMakeLists.txt
index 234b6f92c..b1d5924c7 100644
--- a/host/test/CMakeLists.txt
+++ b/host/test/CMakeLists.txt
@@ -20,6 +20,7 @@ ADD_EXECUTABLE(main_test
     main_test.cpp
     addr_test.cpp
     gain_handler_test.cpp
+    vrt_test.cpp
     wax_test.cpp
 )
 
diff --git a/host/test/vrt_test.cpp b/host/test/vrt_test.cpp
new file mode 100644
index 000000000..9b2d43430
--- /dev/null
+++ b/host/test/vrt_test.cpp
@@ -0,0 +1,97 @@
+//
+// Copyright 2010 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 <boost/test/unit_test.hpp>
+#include <uhd/transport/vrt.hpp>
+
+using namespace uhd::transport;
+
+static void pack_and_unpack(
+    const uhd::metadata_t &metadata,
+    size_t num_payload_words32,
+    size_t packet_count
+){
+    uint32_t header_buff[vrt::max_header_words32];
+    size_t num_header_words32;
+
+    //pack metadata into a vrt header
+    vrt::pack(
+        metadata,            //input
+        header_buff,         //output
+        num_header_words32,  //output
+        num_payload_words32, //input
+        packet_count         //input
+    );
+
+    uhd::metadata_t metadata_out;
+    size_t num_header_words32_out;
+    size_t num_payload_words32_out;
+    size_t packet_count_out;
+
+    //unpack the vrt header back into metadata
+    vrt::unpack(
+        metadata_out,            //output
+        header_buff,             //input
+        num_header_words32_out,  //output
+        num_payload_words32_out, //output
+        packet_count_out         //output
+    );
+
+    //check the the unpacked metadata is the same
+    BOOST_CHECK_EQUAL(packet_count, packet_count_out);
+    BOOST_CHECK_EQUAL(num_header_words32, num_header_words32_out);
+    BOOST_CHECK_EQUAL(num_payload_words32, num_payload_words32_out);
+    BOOST_CHECK_EQUAL(metadata.has_stream_id, metadata_out.has_stream_id);
+    if (metadata.has_stream_id and metadata_out.has_stream_id){
+        BOOST_CHECK_EQUAL(metadata.stream_id, metadata_out.stream_id);
+    }
+    BOOST_CHECK_EQUAL(metadata.has_time_spec, metadata_out.has_time_spec);
+    if (metadata.has_time_spec and metadata_out.has_time_spec){
+        BOOST_CHECK_EQUAL(metadata.time_spec.secs, metadata_out.time_spec.secs);
+        BOOST_CHECK_EQUAL(metadata.time_spec.ticks, metadata_out.time_spec.ticks);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(test_with_none){
+    uhd::metadata_t metadata;
+    pack_and_unpack(metadata, 300, 1);
+}
+
+BOOST_AUTO_TEST_CASE(test_with_sid){
+    uhd::metadata_t metadata;
+    metadata.has_stream_id = true;
+    metadata.stream_id = 6;
+    pack_and_unpack(metadata, 400, 2);
+}
+
+BOOST_AUTO_TEST_CASE(test_with_time_spec){
+    uhd::metadata_t metadata;
+    metadata.has_time_spec = true;
+    metadata.time_spec.secs = 7;
+    metadata.time_spec.ticks = 2000;
+    pack_and_unpack(metadata, 500, 3);
+}
+
+BOOST_AUTO_TEST_CASE(test_with_sid_and_time_spec){
+    uhd::metadata_t metadata;
+    metadata.has_stream_id = true;
+    metadata.stream_id = 2;
+    metadata.has_time_spec = true;
+    metadata.time_spec.secs = 5;
+    metadata.time_spec.ticks = 1000;
+    pack_and_unpack(metadata, 600, 4);
+}