MLECO-2079 Adding the C++ KWS example

Signed-off-by: Eanna O Cathain <eanna.ocathain@arm.com>
Change-Id: I81899bbfaada32f478c2e2fc6441eabb94d8d0fc

1 files changed, 61 insertions, 0 deletions

diff --git a/samples/common/test/Audio/AudioCaptureTest.cpp b/samples/common/test/Audio/AudioCaptureTest.cpp
new file mode 100644
index 0000000000..b8ea7b285c
--- /dev/null
+++ b/samples/common/test/Audio/AudioCaptureTest.cpp
@@ -0,0 +1,61 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#define CATCH_CONFIG_MAIN
+#include <catch.hpp>
+#include <limits>
+
+#include "AudioCapture.hpp"
+
+TEST_CASE("Test capture of audio file")
+{
+    std::string testResources = TEST_RESOURCE_DIR;
+    REQUIRE(testResources != "");
+    std::string file =  testResources + "/" + "myVoiceIsMyPassportVerifyMe04.wav";
+    audio::AudioCapture capture;
+    std::vector<float> audioData = capture.LoadAudioFile(file);
+    capture.InitSlidingWindow(audioData.data(), audioData.size(), 47712, 16000);
+
+    std::vector<float> firstAudioBlock = capture.Next();
+    float actual1 = firstAudioBlock.at(0);
+    float actual2 = firstAudioBlock.at(47000);
+    CHECK(std::to_string(actual1) == "0.000352");
+    CHECK(std::to_string(actual2) == "-0.056441");
+    CHECK(firstAudioBlock.size() == 47712);
+
+    CHECK(capture.HasNext() == true);
+
+    std::vector<float> secondAudioBlock = capture.Next();
+    float actual3 = secondAudioBlock.at(0);
+    float actual4 = secondAudioBlock.at(47000);
+    CHECK(std::to_string(actual3) == "0.102077");
+    CHECK(std::to_string(actual4) == "0.000194");
+    CHECK(capture.HasNext() == true);
+
+    std::vector<float> thirdAudioBlock = capture.Next();
+    float actual5 = thirdAudioBlock.at(0);
+    float actual6 = thirdAudioBlock.at(33500);
+    float actual7 = thirdAudioBlock.at(33600);
+    CHECK(std::to_string(actual5) == "-0.076416");
+    CHECK(std::to_string(actual6) == "-0.000275");
+    CHECK(std::to_string(actual7) == "0.000000");
+    CHECK(capture.HasNext() == false);
+}
+
+TEST_CASE("Test sliding window of audio capture")
+{
+    std::string testResources = TEST_RESOURCE_DIR;
+    REQUIRE(testResources != "");
+    std::string file =  testResources + "/" + "myVoiceIsMyPassportVerifyMe04.wav";
+    audio::AudioCapture capture;
+    std::vector<float> audioData = capture.LoadAudioFile(file);
+    capture.InitSlidingWindow(audioData.data(), audioData.size(), 47712, 16000);
+    capture.Next();
+    capture.Next();
+
+    CHECK(capture.HasNext() == true);
+    capture.Next();
+    CHECK(capture.HasNext() == false);
+}