1 /* 2 * Copyright (c) 2012 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 <stdlib.h> 12 13 #include "testing/gtest/include/gtest/gtest.h" 14 #include "webrtc/common_audio/vad/vad_unittest.h" 15 #include "webrtc/typedefs.h" 16 17 extern "C" { 18 #include "webrtc/common_audio/vad/vad_core.h" 19 #include "webrtc/common_audio/vad/vad_sp.h" 20 } 21 22 namespace { 23 24 TEST_F(VadTest, vad_sp) { 25 VadInstT* self = reinterpret_cast<VadInstT*>(malloc(sizeof(VadInstT))); 26 const int kMaxFrameLenSp = 960; // Maximum frame length in this unittest. 27 int16_t zeros[kMaxFrameLenSp] = { 0 }; 28 int32_t state[2] = { 0 }; 29 int16_t data_in[kMaxFrameLenSp]; 30 int16_t data_out[kMaxFrameLenSp]; 31 32 // We expect the first value to be 1600 as long as |frame_counter| is zero, 33 // which is true for the first iteration. 34 static const int16_t kReferenceMin[32] = { 35 1600, 720, 509, 512, 532, 552, 570, 588, 36 606, 624, 642, 659, 675, 691, 707, 723, 37 1600, 544, 502, 522, 542, 561, 579, 597, 38 615, 633, 651, 667, 683, 699, 715, 731 39 }; 40 41 // Construct a speech signal that will trigger the VAD in all modes. It is 42 // known that (i * i) will wrap around, but that doesn't matter in this case. 43 for (int16_t i = 0; i < kMaxFrameLenSp; ++i) { 44 data_in[i] = (i * i); 45 } 46 // Input values all zeros, expect all zeros out. 47 WebRtcVad_Downsampling(zeros, data_out, state, kMaxFrameLenSp); 48 EXPECT_EQ(0, state[0]); 49 EXPECT_EQ(0, state[1]); 50 for (int16_t i = 0; i < kMaxFrameLenSp / 2; ++i) { 51 EXPECT_EQ(0, data_out[i]); 52 } 53 // Make a simple non-zero data test. 54 WebRtcVad_Downsampling(data_in, data_out, state, kMaxFrameLenSp); 55 EXPECT_EQ(207, state[0]); 56 EXPECT_EQ(2270, state[1]); 57 58 ASSERT_EQ(0, WebRtcVad_InitCore(self)); 59 // TODO(bjornv): Replace this part of the test with taking values from an 60 // array and calculate the reference value here. Make sure the values are not 61 // ordered. 62 for (int16_t i = 0; i < 16; ++i) { 63 int16_t value = 500 * (i + 1); 64 for (int j = 0; j < kNumChannels; ++j) { 65 // Use values both above and below initialized value. 66 EXPECT_EQ(kReferenceMin[i], WebRtcVad_FindMinimum(self, value, j)); 67 EXPECT_EQ(kReferenceMin[i + 16], WebRtcVad_FindMinimum(self, 12000, j)); 68 } 69 self->frame_counter++; 70 } 71 72 free(self); 73 } 74 } // namespace 75
