uhd: added new calls to streamer object + support work

* The transmit streamer gives access to the async msg queue.
* The receive streamer gives access to the issue stream cmd.
* Supporting usrp implementation files updated.
* Example applications updated to use this API.

1 files changed, 2 insertions, 2 deletions

diff --git a/host/examples/latency_test.cpp b/host/examples/latency_test.cpp
index 461ac9bf8..da06086f9 100644
--- a/host/examples/latency_test.cpp
+++ b/host/examples/latency_test.cpp
@@ -103,7 +103,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         stream_cmd.num_samps = buffer.size();
         stream_cmd.stream_now = false;
         stream_cmd.time_spec = usrp->get_time_now() + uhd::time_spec_t(0.01);
-        usrp->issue_stream_cmd(stream_cmd);
+        rx_stream->issue_stream_cmd(stream_cmd);
 
         /***************************************************************
          * Receive the requested packet
@@ -133,7 +133,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
          * Check the async messages for result
          **************************************************************/
         uhd::async_metadata_t async_md;
-        if (not usrp->get_device()->recv_async_msg(async_md)){
+        if (not tx_stream->recv_async_msg(async_md)){
             std::cout << boost::format("failed:\n    Async message recv timed out.\n") << std::endl;
             continue;
         }