chromium/third_party/openscreen/src/cast/streaming/public/offer_messages.h

// Copyright 2019 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_PUBLIC_OFFER_MESSAGES_H_
#define CAST_STREAMING_PUBLIC_OFFER_MESSAGES_H_

#include <chrono>
#include <string>
#include <vector>

#include "cast/streaming/impl/rtp_defines.h"
#include "cast/streaming/impl/session_config.h"
#include "cast/streaming/message_fields.h"
#include "cast/streaming/resolution.h"
#include "json/value.h"
#include "platform/base/error.h"
#include "util/simple_fraction.h"

// This file contains the implementation of the Cast V2 Mirroring Control
// Protocol offer object definition.
namespace openscreen::cast {

// If the target delay provided by the sender is not bounded by
// [kMinTargetDelay, kMaxTargetDelay], it will be set to
// kDefaultTargetPlayoutDelay.
constexpr auto kMinTargetPlayoutDelay = …;
constexpr auto kMaxTargetPlayoutDelay = …;

// If the sender provides an invalid maximum frame rate, it ill
// be set to kDefaultMaxFrameRate.
constexpr int kDefaultMaxFrameRate = …;

constexpr int kDefaultNumVideoChannels = …;
constexpr int kDefaultNumAudioChannels = …;

// A stream, as detailed by the CastV2 protocol spec, is a segment of an
// offer message specifically representing a configuration object for
// a codec and its related fields, such as maximum bit rate, time base,
// and other fields.
// Composed classes include AudioStream and VideoStream, which contain
// fields specific to audio and video respectively.
struct Stream { … };

struct AudioStream { … };

struct VideoStream { … };

struct Offer { … };

}  // namespace openscreen::cast

#endif  // CAST_STREAMING_PUBLIC_OFFER_MESSAGES_H_