From 893af3dc280a5d85be2a5beb266dba9bb538292c Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Tue, 7 Feb 2012 11:59:42 -0800
Subject: uhd: added sc8 conversion tests

---
 host/tests/convert_test.cpp | 74 ++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 67 insertions(+), 7 deletions(-)

(limited to 'host/tests/convert_test.cpp')

diff --git a/host/tests/convert_test.cpp b/host/tests/convert_test.cpp
index 1a5d30080..519b7b711 100644
--- a/host/tests/convert_test.cpp
+++ b/host/tests/convert_test.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2011-2011 Ettus Research LLC
+// Copyright 2011-2012 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
@@ -67,13 +67,13 @@ template <typename Range> static void loopback(
  * Test short conversion
  **********************************************************************/
 static void test_convert_types_sc16(
-    size_t nsamps, convert::id_type &id
+    size_t nsamps, convert::id_type &id, const int extra_div = 1
 ){
     //fill the input samples
     std::vector<sc16_t> input(nsamps), output(nsamps);
     BOOST_FOREACH(sc16_t &in, input) in = sc16_t(
-        std::rand()-(RAND_MAX/2),
-        std::rand()-(RAND_MAX/2)
+        short(((std::rand()/double(RAND_MAX/2)) - 1)*32767/extra_div),
+        short(((std::rand()/double(RAND_MAX/2)) - 1)*32767/extra_div)
     );
 
     //run the loopback and test
@@ -116,15 +116,15 @@ BOOST_AUTO_TEST_CASE(test_convert_types_le_sc16){
  **********************************************************************/
 template <typename data_type>
 static void test_convert_types_for_floats(
-    size_t nsamps, convert::id_type &id
+    size_t nsamps, convert::id_type &id, const double extra_scale = 1.0
 ){
     typedef typename data_type::value_type value_type;
 
     //fill the input samples
     std::vector<data_type> input(nsamps), output(nsamps);
     BOOST_FOREACH(data_type &in, input) in = data_type(
-        (std::rand()/value_type(RAND_MAX/2)) - 1,
-        (std::rand()/value_type(RAND_MAX/2)) - 1
+        ((std::rand()/value_type(RAND_MAX/2)) - 1)*extra_scale,
+        ((std::rand()/value_type(RAND_MAX/2)) - 1)*extra_scale
     );
 
     //run the loopback and test
@@ -280,3 +280,63 @@ BOOST_AUTO_TEST_CASE(test_convert_types_sc16_to_fc32){
         MY_CHECK_CLOSE(input[i].imag()/float(32767), output[i].imag(), float(0.01));
     }
 }
+
+/***********************************************************************
+ * Test sc8 conversions
+ **********************************************************************/
+BOOST_AUTO_TEST_CASE(test_convert_types_fc64_and_sc8){
+    convert::id_type id;
+    id.input_format = "fc64";
+    id.num_inputs = 1;
+    id.num_outputs = 1;
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_le";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_for_floats<fc64_t>(nsamps, id, 1./256);
+    }
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_be";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_for_floats<fc64_t>(nsamps, id, 1./256);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(test_convert_types_fc32_and_sc8){
+    convert::id_type id;
+    id.input_format = "fc32";
+    id.num_inputs = 1;
+    id.num_outputs = 1;
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_le";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_for_floats<fc32_t>(nsamps, id, 1./256);
+    }
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_be";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_for_floats<fc32_t>(nsamps, id, 1./256);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(test_convert_types_sc16_and_sc8){
+    convert::id_type id;
+    id.input_format = "sc16";
+    id.num_inputs = 1;
+    id.num_outputs = 1;
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_le";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_sc16(nsamps, id, 256);
+    }
+
+    //try various lengths to test edge cases
+    id.output_format = "sc8_item32_be";
+    for (size_t nsamps = 1; nsamps < 16; nsamps++){
+        test_convert_types_sc16(nsamps, id, 256);
+    }
+}
-- 
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