chromium/third_party/openscreen/src/cast/streaming/impl/receiver_base.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CAST_STREAMING_IMPL_RECEIVER_BASE_H_
#define CAST_STREAMING_IMPL_RECEIVER_BASE_H_

#include <chrono>

#include "cast/streaming/public/encoded_frame.h"
#include "cast/streaming/impl/session_config.h"
#include "cast/streaming/ssrc.h"
#include "platform/api/time.h"
#include "platform/base/span.h"

namespace openscreen::cast {

// The Cast Streaming Receiver, a peer corresponding to some Cast Streaming
// Sender at the other end of a network link.
//
// Cast Streaming is a transport protocol which divides up the frames for one
// media stream (e.g., audio or video) into multiple RTP packets containing an
// encrypted payload. The Receiver is the peer responsible for collecting the
// RTP packets, decrypting the payload, and re-assembling a frame that can be
// passed to a decoder and played out.
//
// A Sender ↔ Receiver pair is used to transport each media stream. Typically,
// there are two pairs in a normal system, one for the audio stream and one for
// video stream. A local player is responsible for synchronizing the playout of
// the frames of each stream to achieve lip-sync. See the discussion in
// encoded_frame.h for how the |reference_time| and |rtp_timestamp| of the
// EncodedFrames are used to achieve this.
class ReceiverBase { … };

}  // namespace openscreen::cast

#endif  // CAST_STREAMING_IMPL_RECEIVER_BASE_H_