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/*
* Copyright (c) 2011 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 "common_audio/vad/vad_unittest.h"
#include "test/gtest.h"
extern "C" {
#include "common_audio/vad/vad_gmm.h"
}
namespace webrtc {
namespace test {
TEST_F(VadTest, vad_gmm) {
int16_t delta = 0;
// Input value at mean.
EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(0, 0, 128, &delta));
EXPECT_EQ(0, delta);
EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(16, 128, 128, &delta));
EXPECT_EQ(0, delta);
EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(-16, -128, 128, &delta));
EXPECT_EQ(0, delta);
// Largest possible input to give non-zero probability.
EXPECT_EQ(1024, WebRtcVad_GaussianProbability(59, 0, 128, &delta));
EXPECT_EQ(7552, delta);
EXPECT_EQ(1024, WebRtcVad_GaussianProbability(75, 128, 128, &delta));
EXPECT_EQ(7552, delta);
EXPECT_EQ(1024, WebRtcVad_GaussianProbability(-75, -128, 128, &delta));
EXPECT_EQ(-7552, delta);
// Too large input, should give zero probability.
EXPECT_EQ(0, WebRtcVad_GaussianProbability(105, 0, 128, &delta));
EXPECT_EQ(13440, delta);
}
} // namespace test
} // namespace webrtc
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