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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CAST_STREAMING_SESSION_CONFIG_H_
#define CAST_STREAMING_SESSION_CONFIG_H_
#include <array>
#include <chrono>
#include <cstdint>
#include "cast/streaming/ssrc.h"
namespace openscreen {
namespace cast {
// Common streaming configuration, established from the OFFER/ANSWER exchange,
// that the Sender and Receiver are both assuming.
// TODO(jophba): add config validation.
struct SessionConfig final {
SessionConfig(Ssrc sender_ssrc,
Ssrc receiver_ssrc,
int rtp_timebase,
int channels,
std::chrono::milliseconds target_playout_delay,
std::array<uint8_t, 16> aes_secret_key,
std::array<uint8_t, 16> aes_iv_mask);
SessionConfig(const SessionConfig&) = default;
SessionConfig(SessionConfig&&) noexcept = default;
SessionConfig& operator=(const SessionConfig&) = default;
SessionConfig& operator=(SessionConfig&&) noexcept = default;
~SessionConfig() = default;
// The sender and receiver's SSRC identifiers. Note: SSRC identifiers
// are defined as unsigned 32 bit integers here:
// https://tools.ietf.org/html/rfc5576#page-5
Ssrc sender_ssrc = 0;
Ssrc receiver_ssrc = 0;
// RTP timebase: The number of RTP units advanced per second. For audio,
// this is the sampling rate. For video, this is 90 kHz by convention.
int rtp_timebase = 90000;
// Number of channels. Must be 1 for video, for audio typically 2.
int channels = 1;
// Initial target playout delay.
std::chrono::milliseconds target_playout_delay;
// The AES-128 crypto key and initialization vector.
std::array<uint8_t, 16> aes_secret_key{};
std::array<uint8_t, 16> aes_iv_mask{};
};
} // namespace cast
} // namespace openscreen
#endif // CAST_STREAMING_SESSION_CONFIG_H_
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