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/*
* 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
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