1 files changed, 73 insertions, 0 deletions
diff --git a/third_party/libwebrtc/common_audio/vad/vad_sp_unittest.cc b/third_party/libwebrtc/common_audio/vad/vad_sp_unittest.cc
new file mode 100644
index 0000000000..bf208af3e1
--- /dev/null
+++ b/third_party/libwebrtc/common_audio/vad/vad_sp_unittest.cc
@@ -0,0 +1,73 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <stdlib.h>
+
+#include "common_audio/vad/vad_unittest.h"
+#include "test/gtest.h"
+
+extern "C" {
+#include "common_audio/vad/vad_core.h"
+#include "common_audio/vad/vad_sp.h"
+}
+
+namespace webrtc {
+namespace test {
+
+TEST_F(VadTest, vad_sp) {
+  VadInstT* self = reinterpret_cast<VadInstT*>(malloc(sizeof(VadInstT)));
+  const size_t kMaxFrameLenSp = 960;  // Maximum frame length in this unittest.
+  int16_t zeros[kMaxFrameLenSp] = {0};
+  int32_t state[2] = {0};
+  int16_t data_in[kMaxFrameLenSp];
+  int16_t data_out[kMaxFrameLenSp];
+
+  // We expect the first value to be 1600 as long as `frame_counter` is zero,
+  // which is true for the first iteration.
+  static const int16_t kReferenceMin[32] = {
+      1600, 720, 509, 512, 532, 552,  570, 588, 606, 624, 642,
+      659,  675, 691, 707, 723, 1600, 544, 502, 522, 542, 561,
+      579,  597, 615, 633, 651, 667,  683, 699, 715, 731};
+
+  // Construct a speech signal that will trigger the VAD in all modes. It is
+  // known that (i * i) will wrap around, but that doesn't matter in this case.
+  for (size_t i = 0; i < kMaxFrameLenSp; ++i) {
+    data_in[i] = static_cast<int16_t>(i * i);
+  }
+  // Input values all zeros, expect all zeros out.
+  WebRtcVad_Downsampling(zeros, data_out, state, kMaxFrameLenSp);
+  EXPECT_EQ(0, state[0]);
+  EXPECT_EQ(0, state[1]);
+  for (size_t i = 0; i < kMaxFrameLenSp / 2; ++i) {
+    EXPECT_EQ(0, data_out[i]);
+  }
+  // Make a simple non-zero data test.
+  WebRtcVad_Downsampling(data_in, data_out, state, kMaxFrameLenSp);
+  EXPECT_EQ(207, state[0]);
+  EXPECT_EQ(2270, state[1]);
+
+  ASSERT_EQ(0, WebRtcVad_InitCore(self));
+  // TODO(bjornv): Replace this part of the test with taking values from an
+  // array and calculate the reference value here. Make sure the values are not
+  // ordered.
+  for (int16_t i = 0; i < 16; ++i) {
+    int16_t value = 500 * (i + 1);
+    for (int j = 0; j < kNumChannels; ++j) {
+      // Use values both above and below initialized value.
+      EXPECT_EQ(kReferenceMin[i], WebRtcVad_FindMinimum(self, value, j));
+      EXPECT_EQ(kReferenceMin[i + 16], WebRtcVad_FindMinimum(self, 12000, j));
+    }
+    self->frame_counter++;
+  }
+
+  free(self);
+}
+}  // namespace test
+}  // namespace webrtc