1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "testing/gtest/include/gtest/gtest.h" 12 #include "webrtc/common_audio/vad/vad_unittest.h" 13 #include "webrtc/typedefs.h" 14 15 extern "C" { 16 #include "webrtc/common_audio/vad/vad_gmm.h" 17 } 18 19 namespace { 20 21 TEST_F(VadTest, vad_gmm) { 22 int16_t delta = 0; 23 // Input value at mean. 24 EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(0, 0, 128, &delta)); 25 EXPECT_EQ(0, delta); 26 EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(16, 128, 128, &delta)); 27 EXPECT_EQ(0, delta); 28 EXPECT_EQ(1048576, WebRtcVad_GaussianProbability(-16, -128, 128, &delta)); 29 EXPECT_EQ(0, delta); 30 31 // Largest possible input to give non-zero probability. 32 EXPECT_EQ(1024, WebRtcVad_GaussianProbability(59, 0, 128, &delta)); 33 EXPECT_EQ(7552, delta); 34 EXPECT_EQ(1024, WebRtcVad_GaussianProbability(75, 128, 128, &delta)); 35 EXPECT_EQ(7552, delta); 36 EXPECT_EQ(1024, WebRtcVad_GaussianProbability(-75, -128, 128, &delta)); 37 EXPECT_EQ(-7552, delta); 38 39 // Too large input, should give zero probability. 40 EXPECT_EQ(0, WebRtcVad_GaussianProbability(105, 0, 128, &delta)); 41 EXPECT_EQ(13440, delta); 42 } 43 } // namespace 44
