blob: ab057be028bb5fc4fea7cb3680fc41a23e358433 [file] [log] [blame]
/*
* Copyright 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 "call/callfactory.h"
#include <memory>
#include <string>
#include <utility>
#include "absl/types/optional.h"
#include "call/call.h"
#include "call/degraded_call.h"
#include "call/fake_network_pipe.h"
#include "system_wrappers/include/field_trial.h"
namespace webrtc {
namespace {
bool ParseConfigParam(std::string exp_name, int* field) {
std::string group = field_trial::FindFullName(exp_name);
if (group == "")
return false;
return (sscanf(group.c_str(), "%d", field) == 1);
}
absl::optional<webrtc::BuiltInNetworkBehaviorConfig> ParseDegradationConfig(
bool send) {
std::string exp_prefix = "WebRTCFakeNetwork";
if (send) {
exp_prefix += "Send";
} else {
exp_prefix += "Receive";
}
webrtc::BuiltInNetworkBehaviorConfig config;
bool configured = false;
configured |=
ParseConfigParam(exp_prefix + "DelayMs", &config.queue_delay_ms);
configured |= ParseConfigParam(exp_prefix + "DelayStdDevMs",
&config.delay_standard_deviation_ms);
int queue_length = 0;
if (ParseConfigParam(exp_prefix + "QueueLength", &queue_length)) {
RTC_CHECK_GE(queue_length, 0);
config.queue_length_packets = queue_length;
configured = true;
}
configured |=
ParseConfigParam(exp_prefix + "CapacityKbps", &config.link_capacity_kbps);
configured |=
ParseConfigParam(exp_prefix + "LossPercent", &config.loss_percent);
int allow_reordering = 0;
if (ParseConfigParam(exp_prefix + "AllowReordering", &allow_reordering)) {
config.allow_reordering = true;
configured = true;
}
configured |= ParseConfigParam(exp_prefix + "AvgBurstLossLength",
&config.avg_burst_loss_length);
return configured
? absl::optional<webrtc::BuiltInNetworkBehaviorConfig>(config)
: absl::nullopt;
}
} // namespace
Call* CallFactory::CreateCall(const Call::Config& config) {
absl::optional<webrtc::BuiltInNetworkBehaviorConfig> send_degradation_config =
ParseDegradationConfig(true);
absl::optional<webrtc::BuiltInNetworkBehaviorConfig>
receive_degradation_config = ParseDegradationConfig(false);
if (send_degradation_config || receive_degradation_config) {
return new DegradedCall(std::unique_ptr<Call>(Call::Create(config)),
send_degradation_config,
receive_degradation_config);
}
return Call::Create(config);
}
std::unique_ptr<CallFactoryInterface> CreateCallFactory() {
return std::unique_ptr<CallFactoryInterface>(new CallFactory());
}
} // namespace webrtc