[feat] use original webrtc header defines

src/rtp/rtp_packet/rtp_header.h

@@ -0,0 +1,44 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-16
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _RTP_HEADER_H_
+#define _RTP_HEADER_H_
+
+#include <cstddef>
+#include <cstdint>
+#include <optional>
+#include <string>
+
+#include "api/units/timestamp.h"
+
+enum { kRtpCsrcSize = 15 };  // RFC 3550 page 13
+
+struct RTPHeader {
+  RTPHeader()
+      : markerBit(false),
+        payloadType(0),
+        sequenceNumber(0),
+        timestamp(0),
+        ssrc(0),
+        numCSRCs(0),
+        arrOfCSRCs(),
+        paddingLength(0),
+        headerLength(0){};
+  RTPHeader(const RTPHeader& other) = default;
+  RTPHeader& operator=(const RTPHeader& other) = default;
+
+  bool markerBit;
+  uint8_t payloadType;
+  uint16_t sequenceNumber;
+  uint32_t timestamp;
+  uint32_t ssrc;
+  uint8_t numCSRCs;
+  uint32_t arrOfCSRCs[kRtpCsrcSize];
+  size_t paddingLength;
+  size_t headerLength;
+};
+
+#endif