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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 "webrtc/modules/audio_processing/vad/pole_zero_filter.h"
#include <math.h>
#include <stdio.h>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/audio_processing/vad/vad_audio_proc_internal.h"
#include "webrtc/test/testsupport/fileutils.h"
namespace webrtc {
static const int kInputSamples = 50;
static const int16_t kInput[kInputSamples] = {
-2136, -7116, 10715, 2464, 3164, 8139, 11393, 24013, -32117, -5544,
-27740, 10181, 14190, -24055, -15912, 17393, 6359, -9950, -13894, 32432,
-23944, 3437, -8381, 19768, 3087, -19795, -5920, 13310, 1407, 3876,
4059, 3524, -23130, 19121, -27900, -24840, 4089, 21422, -3625, 3015,
-11236, 28856, 13424, 6571, -19761, -6361, 15821, -9469, 29727, 32229};
static const float kReferenceOutput[kInputSamples] = {
-2082.230472f, -6878.572941f, 10697.090871f, 2358.373952f,
2973.936512f, 7738.580650f, 10690.803213f, 22687.091576f,
-32676.684717f, -5879.621684f, -27359.297432f, 10368.735888f,
13994.584604f, -23676.126249f, -15078.250390f, 17818.253338f,
6577.743123f, -9498.369315f, -13073.651079f, 32460.026588f,
-23391.849347f, 3953.805667f, -7667.761363f, 19995.153447f,
3185.575477f, -19207.365160f, -5143.103201f, 13756.317237f,
1779.654794f, 4142.269755f, 4209.475034f, 3572.991789f,
-22509.089546f, 19307.878964f, -27060.439759f, -23319.042810f,
5547.685267f, 22312.718676f, -2707.309027f, 3852.358490f,
-10135.510093f, 29241.509970f, 13394.397233f, 6340.721417f,
-19510.207905f, -5908.442086f, 15882.301634f, -9211.335255f,
29253.056735f, 30874.443046f};
class PoleZeroFilterTest : public ::testing::Test {
protected:
PoleZeroFilterTest()
: my_filter_(PoleZeroFilter::Create(kCoeffNumerator,
kFilterOrder,
kCoeffDenominator,
kFilterOrder)) {}
~PoleZeroFilterTest() {}
void FilterSubframes(int num_subframes);
private:
void TestClean();
rtc::scoped_ptr<PoleZeroFilter> my_filter_;
};
void PoleZeroFilterTest::FilterSubframes(int num_subframes) {
float output[kInputSamples];
const int num_subframe_samples = kInputSamples / num_subframes;
EXPECT_EQ(num_subframe_samples * num_subframes, kInputSamples);
for (int n = 0; n < num_subframes; n++) {
my_filter_->Filter(&kInput[n * num_subframe_samples], num_subframe_samples,
&output[n * num_subframe_samples]);
}
for (int n = 0; n < kInputSamples; n++) {
EXPECT_NEAR(output[n], kReferenceOutput[n], 1);
}
}
TEST_F(PoleZeroFilterTest, OneSubframe) {
FilterSubframes(1);
}
TEST_F(PoleZeroFilterTest, TwoSubframes) {
FilterSubframes(2);
}
TEST_F(PoleZeroFilterTest, FiveSubframes) {
FilterSubframes(5);
}
TEST_F(PoleZeroFilterTest, TenSubframes) {
FilterSubframes(10);
}
TEST_F(PoleZeroFilterTest, TwentyFiveSubframes) {
FilterSubframes(25);
}
TEST_F(PoleZeroFilterTest, FiftySubframes) {
FilterSubframes(50);
}
} // namespace webrtc
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