chromium/third_party/webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h

/*
 *  Copyright (c) 2016 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 MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_
#define MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_

#include <stddef.h>
#include <stdint.h>

#include <cstdint>
#include <string>
#include <vector>

#include "absl/strings/string_view.h"
#include "api/array_view.h"
#include "api/rtp_headers.h"
#include "api/rtp_parameters.h"
#include "api/units/timestamp.h"
#include "api/video/color_space.h"
#include "api/video/video_content_type.h"
#include "api/video/video_rotation.h"
#include "api/video/video_timing.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "system_wrappers/include/ntp_time.h"

// This file contains class definitions for reading/writing each RTP header
// extension. Each class must be defined such that it is compatible with being
// an argument to the templated RtpPacket::GetExtension and
// RtpPacketToSend::SetExtension methods. New header extensions must have class
// names ending with "Extension", for the purpose of avoiding collisions with
// RTP extension information exposed in the public API of WebRTC.

namespace webrtc {

class AbsoluteSendTime { … };

class AbsoluteCaptureTimeExtension { … };

class AudioLevelExtension { … };

class CsrcAudioLevel { … };

class TransmissionOffset { … };

class TransportSequenceNumber { … };

class TransportSequenceNumberV2 { … };

class VideoOrientation { … };

class PlayoutDelayLimits { … };

class VideoContentTypeExtension { … };

class VideoTimingExtension { … };

class ColorSpaceExtension { … };

// Base extension class for RTP header extensions which are strings.
// Subclasses must defined kId and kUri static constexpr members.
class BaseRtpStringExtension { … };

class RtpStreamId : public BaseRtpStringExtension { … };

class RepairedRtpStreamId : public BaseRtpStringExtension { … };

class RtpMid : public BaseRtpStringExtension { … };

class InbandComfortNoiseExtension { … };

class VideoFrameTrackingIdExtension { … };

}  // namespace webrtc
#endif  // MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_