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/*
* Copyright (c) 2012 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_UTILITY_H_
#define MODULES_RTP_RTCP_SOURCE_RTP_UTILITY_H_
#include <stdint.h>
#include <algorithm>
#include "absl/strings/string_view.h"
#include "api/rtp_headers.h"
#include "common_types.h" // NOLINT(build/include)
#include "modules/rtp_rtcp/include/rtp_header_extension_map.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
namespace webrtc {
const uint8_t kRtpMarkerBitMask = 0x80;
namespace RtpUtility {
struct Payload {
Payload(absl::string_view payload_name, const PayloadUnion& pu)
: typeSpecific(pu) {
size_t clipped_size = payload_name.copy(name, sizeof(name) - 1);
name[clipped_size] = '\0';
}
char name[RTP_PAYLOAD_NAME_SIZE];
PayloadUnion typeSpecific;
};
// Round up to the nearest size that is a multiple of 4.
size_t Word32Align(size_t size);
class RtpHeaderParser {
public:
RtpHeaderParser(const uint8_t* rtpData, size_t rtpDataLength);
~RtpHeaderParser();
bool RTCP() const;
bool ParseRtcp(RTPHeader* header) const;
bool Parse(RTPHeader* parsedPacket,
const RtpHeaderExtensionMap* ptrExtensionMap = nullptr) const;
private:
void ParseOneByteExtensionHeader(RTPHeader* parsedPacket,
const RtpHeaderExtensionMap* ptrExtensionMap,
const uint8_t* ptrRTPDataExtensionEnd,
const uint8_t* ptr) const;
const uint8_t* const _ptrRTPDataBegin;
const uint8_t* const _ptrRTPDataEnd;
};
} // namespace RtpUtility
} // namespace webrtc
#endif // MODULES_RTP_RTCP_SOURCE_RTP_UTILITY_H_