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/*
* Copyright (c) 2016 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 "modules/audio_coding/audio_network_adaptor/dtx_controller.h"
#include <memory>
#include "test/gtest.h"
namespace webrtc {
namespace {
constexpr int kDtxEnablingBandwidthBps = 55000;
constexpr int kDtxDisablingBandwidthBps = 65000;
constexpr int kMediumBandwidthBps =
(kDtxEnablingBandwidthBps + kDtxDisablingBandwidthBps) / 2;
std::unique_ptr<DtxController> CreateController(int initial_dtx_enabled) {
std::unique_ptr<DtxController> controller(new DtxController(
DtxController::Config(initial_dtx_enabled, kDtxEnablingBandwidthBps,
kDtxDisablingBandwidthBps)));
return controller;
}
void CheckDecision(DtxController* controller,
const absl::optional<int>& uplink_bandwidth_bps,
bool expected_dtx_enabled) {
if (uplink_bandwidth_bps) {
Controller::NetworkMetrics network_metrics;
network_metrics.uplink_bandwidth_bps = uplink_bandwidth_bps;
controller->UpdateNetworkMetrics(network_metrics);
}
AudioEncoderRuntimeConfig config;
controller->MakeDecision(&config);
EXPECT_EQ(expected_dtx_enabled, config.enable_dtx);
}
} // namespace
TEST(DtxControllerTest, OutputInitValueWhenUplinkBandwidthUnknown) {
constexpr bool kInitialDtxEnabled = true;
auto controller = CreateController(kInitialDtxEnabled);
CheckDecision(controller.get(), absl::nullopt, kInitialDtxEnabled);
}
TEST(DtxControllerTest, TurnOnDtxForLowUplinkBandwidth) {
auto controller = CreateController(false);
CheckDecision(controller.get(), kDtxEnablingBandwidthBps, true);
}
TEST(DtxControllerTest, TurnOffDtxForHighUplinkBandwidth) {
auto controller = CreateController(true);
CheckDecision(controller.get(), kDtxDisablingBandwidthBps, false);
}
TEST(DtxControllerTest, MaintainDtxOffForMediumUplinkBandwidth) {
auto controller = CreateController(false);
CheckDecision(controller.get(), kMediumBandwidthBps, false);
}
TEST(DtxControllerTest, MaintainDtxOnForMediumUplinkBandwidth) {
auto controller = CreateController(true);
CheckDecision(controller.get(), kMediumBandwidthBps, true);
}
TEST(DtxControllerTest, CheckBehaviorOnChangingUplinkBandwidth) {
auto controller = CreateController(false);
CheckDecision(controller.get(), kMediumBandwidthBps, false);
CheckDecision(controller.get(), kDtxEnablingBandwidthBps, true);
CheckDecision(controller.get(), kMediumBandwidthBps, true);
CheckDecision(controller.get(), kDtxDisablingBandwidthBps, false);
}
} // namespace webrtc
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