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/*
* Copyright 2019 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.
*/
#ifndef API_TRANSPORT_TEST_FEEDBACK_GENERATOR_INTERFACE_H_
#define API_TRANSPORT_TEST_FEEDBACK_GENERATOR_INTERFACE_H_
#include <cstddef>
#include <vector>
#include "api/rtc_event_log/rtc_event_log.h"
#include "api/test/network_emulation_manager.h"
#include "api/test/simulated_network.h"
#include "api/transport/network_types.h"
#include "api/units/data_rate.h"
#include "api/units/data_size.h"
#include "api/units/time_delta.h"
#include "api/units/timestamp.h"
namespace webrtc {
class FeedbackGenerator {
public:
struct Config {
BuiltInNetworkBehaviorConfig send_link;
BuiltInNetworkBehaviorConfig return_link;
TimeDelta feedback_interval = TimeDelta::Millis(50);
DataSize feedback_packet_size = DataSize::Bytes(20);
};
virtual ~FeedbackGenerator() = default;
virtual Timestamp Now() = 0;
virtual void Sleep(TimeDelta duration) = 0;
// Send a packet of the given size over the simulated network.
virtual void SendPacket(size_t size) = 0;
virtual std::vector<TransportPacketsFeedback> PopFeedback() = 0;
virtual void SetSendConfig(BuiltInNetworkBehaviorConfig config) = 0;
virtual void SetReturnConfig(BuiltInNetworkBehaviorConfig config) = 0;
virtual void SetSendLinkCapacity(DataRate capacity) = 0;
virtual RtcEventLog& event_log() = 0;
};
// Same as FeedbackGenerator, but NetworkEmulationManager is owned externally.
// Packets can be sent and received via multiple nodes.
class FeedbackGeneratorWithoutNetwork {
public:
struct Config {
std::vector<EmulatedNetworkNode*> sent_via_nodes;
std::vector<EmulatedNetworkNode*> received_via_nodes;
TimeDelta feedback_interval = TimeDelta::Millis(50);
DataSize feedback_packet_size = DataSize::Bytes(20);
};
virtual ~FeedbackGeneratorWithoutNetwork() = default;
// Send a packet of the given size over the simulated network.
// The packet size logged in the event log is `total_size` - `overhead`.
// This allows a user to ensure that LoggedPacketInfo.size +
// LoggedPacketInfo.overhead in the event log is `total_size`.
// Note that ParsedRtcEventLog estimate the overhead depending on the
// selected ice candidate.
virtual void SendPacket(size_t total_size, size_t overhead) = 0;
virtual std::vector<TransportPacketsFeedback> PopFeedback() = 0;
virtual RtcEventLog& event_log() = 0;
};
} // namespace webrtc
#endif // API_TRANSPORT_TEST_FEEDBACK_GENERATOR_INTERFACE_H_
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