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/*
* Copyright (c) 2018 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 CALL_PACKET_RECEIVER_H_
#define CALL_PACKET_RECEIVER_H_
#include <algorithm>
#include <functional>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "api/media_types.h"
#include "rtc_base/copy_on_write_buffer.h"
namespace webrtc {
class PacketReceiver {
public:
enum DeliveryStatus {
DELIVERY_OK,
DELIVERY_UNKNOWN_SSRC,
DELIVERY_PACKET_ERROR,
};
// Definition of the callback to execute when packet delivery is complete.
// The callback will be issued on the same thread as called DeliverPacket.
typedef std::function<
void(DeliveryStatus, MediaType, rtc::CopyOnWriteBuffer, int64_t)>
PacketCallback;
// Asynchronously handle packet delivery and report back to the caller when
// delivery of the packet has completed.
// Note that if the packet is invalid or can be processed without the need of
// asynchronous operations that the |callback| may have been called before
// the function returns.
// TODO(bugs.webrtc.org/11993): This function is meant to be called on the
// network thread exclusively but while the code is being updated to align
// with those goals, it may be called either on the worker or network threads.
// Update docs etc when the work has been completed. Once we're done with the
// updates, we might be able to go back to returning the status from this
// function instead of having to report it via a callback.
virtual void DeliverPacketAsync(MediaType media_type,
rtc::CopyOnWriteBuffer packet,
int64_t packet_time_us,
PacketCallback callback) {
DeliveryStatus status = DeliverPacket(media_type, packet, packet_time_us);
if (callback)
callback(status, media_type, std::move(packet), packet_time_us);
}
virtual DeliveryStatus DeliverPacket(MediaType media_type,
rtc::CopyOnWriteBuffer packet,
int64_t packet_time_us) = 0;
protected:
virtual ~PacketReceiver() {}
};
} // namespace webrtc
#endif // CALL_PACKET_RECEIVER_H_
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