Adding second layer of the echo canceller 3 functionality.

webrtc/modules/audio_processing/aec3/echo_remover_unittest.cc

+/*
+ *  Copyright (c) 2017 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/aec3/echo_remover.h"
+
+#include <memory>
+#include <sstream>
+#include <string>
+
+#include "webrtc/modules/audio_processing/aec3/aec3_constants.h"
+#include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
+#include "webrtc/test/gtest.h"
+
+namespace webrtc {
+namespace {
+
+std::string ProduceDebugText(int sample_rate_hz) {
+  std::ostringstream ss;
+  ss << "Sample rate: " << sample_rate_hz;
+  return ss.str();
+}
+
+}  // namespace
+
+// Verifies the basic API call sequence
+TEST(EchoRemover, BasicApiCalls) {
+  for (auto rate : {8000, 16000, 32000, 48000}) {
+    ProduceDebugText(rate);
+    std::unique_ptr<EchoRemover> remover(EchoRemover::Create(rate));
+
+    std::vector<std::vector<float>> render(NumBandsForRate(rate),
+                                           std::vector<float>(kBlockSize, 0.f));
+    std::vector<std::vector<float>> capture(
+        NumBandsForRate(rate), std::vector<float>(kBlockSize, 0.f));
+    for (size_t k = 0; k < 100; ++k) {
+      EchoPathVariability echo_path_variability(k % 3 == 0 ? true : false,
+                                                k % 5 == 0 ? true : false);
+      rtc::Optional<size_t> echo_path_delay_samples =
+          (k % 6 == 0 ? rtc::Optional<size_t>(k * 10)
+                      : rtc::Optional<size_t>());
+      remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                            k % 2 == 0 ? true : false, render, &capture);
+      remover->UpdateEchoLeakageStatus(k % 7 == 0 ? true : false);
+    }
+  }
+}
+
+#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+
+// Verifies the check for the samplerate.
+TEST(EchoRemover, WrongSampleRate) {
+  EXPECT_DEATH(std::unique_ptr<EchoRemover>(EchoRemover::Create(8001)), "");
+}
+
+// Verifies the check for the render block size.
+TEST(EchoRemover, WrongRenderBlockSize) {
+  for (auto rate : {8000, 16000, 32000, 48000}) {
+    ProduceDebugText(rate);
+    std::unique_ptr<EchoRemover> remover(EchoRemover::Create(rate));
+
+    std::vector<std::vector<float>> render(
+        NumBandsForRate(rate), std::vector<float>(kBlockSize - 1, 0.f));
+    std::vector<std::vector<float>> capture(
+        NumBandsForRate(rate), std::vector<float>(kBlockSize, 0.f));
+    EchoPathVariability echo_path_variability(false, false);
+    rtc::Optional<size_t> echo_path_delay_samples;
+    EXPECT_DEATH(
+        remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                              false, render, &capture),
+        "");
+  }
+}
+
+// Verifies the check for the capture block size.
+TEST(EchoRemover, WrongCaptureBlockSize) {
+  for (auto rate : {8000, 16000, 32000, 48000}) {
+    ProduceDebugText(rate);
+    std::unique_ptr<EchoRemover> remover(EchoRemover::Create(rate));
+
+    std::vector<std::vector<float>> render(NumBandsForRate(rate),
+                                           std::vector<float>(kBlockSize, 0.f));
+    std::vector<std::vector<float>> capture(
+        NumBandsForRate(rate), std::vector<float>(kBlockSize - 1, 0.f));
+    EchoPathVariability echo_path_variability(false, false);
+    rtc::Optional<size_t> echo_path_delay_samples;
+    EXPECT_DEATH(
+        remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                              false, render, &capture),
+        "");
+  }
+}
+
+// Verifies the check for the number of render bands.
+TEST(EchoRemover, WrongRenderNumBands) {
+  for (auto rate : {16000, 32000, 48000}) {
+    ProduceDebugText(rate);
+    std::unique_ptr<EchoRemover> remover(EchoRemover::Create(rate));
+
+    std::vector<std::vector<float>> render(
+        NumBandsForRate(rate == 48000 ? 16000 : rate + 16000),
+        std::vector<float>(kBlockSize, 0.f));
+    std::vector<std::vector<float>> capture(
+        NumBandsForRate(rate), std::vector<float>(kBlockSize, 0.f));
+    EchoPathVariability echo_path_variability(false, false);
+    rtc::Optional<size_t> echo_path_delay_samples;
+    EXPECT_DEATH(
+        remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                              false, render, &capture),
+        "");
+  }
+}
+
+// Verifies the check for the number of capture bands.
+TEST(EchoRemover, WrongCaptureNumBands) {
+  for (auto rate : {16000, 32000, 48000}) {
+    ProduceDebugText(rate);
+    std::unique_ptr<EchoRemover> remover(EchoRemover::Create(rate));
+
+    std::vector<std::vector<float>> render(NumBandsForRate(rate),
+                                           std::vector<float>(kBlockSize, 0.f));
+    std::vector<std::vector<float>> capture(
+        NumBandsForRate(rate == 48000 ? 16000 : rate + 16000),
+        std::vector<float>(kBlockSize, 0.f));
+    EchoPathVariability echo_path_variability(false, false);
+    rtc::Optional<size_t> echo_path_delay_samples;
+    EXPECT_DEATH(
+        remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                              false, render, &capture),
+        "");
+  }
+}
+
+// Verifies the check for non-null capture block.
+TEST(EchoRemover, NullCapture) {
+  std::unique_ptr<EchoRemover> remover(EchoRemover::Create(8000));
+
+  std::vector<std::vector<float>> render(NumBandsForRate(8000),
+                                         std::vector<float>(kBlockSize, 0.f));
+  EchoPathVariability echo_path_variability(false, false);
+  rtc::Optional<size_t> echo_path_delay_samples;
+  EXPECT_DEATH(
+      remover->ProcessBlock(echo_path_delay_samples, echo_path_variability,
+                            false, render, nullptr),
+      "");
+}
+
+#endif
+
+}  // namespace webrtc