Implementation for rtcp sender report

src/rtcp/rtcp_header.h

@@ -0,0 +1,58 @@
+#ifndef _RTCP_HEADER_H_
+#define _RTCP_HEADER_H_
+
+#include <stdint.h>
+
+// RTCP header
+//  0                   1                   2                   3
+//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// |V=2|P|   RC    |   PT=SR=200   |            length             |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+#define DEFAULT_RTCP_VERSION 2
+#define DEFAULT_RTCP_HEADER_SIZE 4
+
+class RtcpHeader {
+ public:
+  typedef enum {
+    UNKNOWN = 0,
+    SR = 200,
+    RR = 201,
+    SDES = 202,
+    BYE = 203,
+    APP = 204
+  } PAYLOAD_TYPE;
+
+ public:
+  RtcpHeader();
+  ~RtcpHeader();
+
+ public:
+  void SetVerion(uint8_t version) { version_ = version; }
+  void SetPadding(uint8_t padding) { padding_ = padding; }
+  void SetCountOrFormat(uint8_t count_or_format) {
+    count_or_format_ = count_or_format;
+  }
+  void SetPayloadType(uint8_t payload_type) { payload_type_ = payload_type; }
+  void SetLength(uint16_t length) { length_ = length; }
+
+ public:
+  uint8_t Verion() const { return version_; }
+  uint8_t Padding() const { return padding_; }
+  uint8_t CountOrFormat() const { return count_or_format_; }
+  PAYLOAD_TYPE PayloadType() const { return PAYLOAD_TYPE(payload_type_); }
+  uint16_t Length() const { return length_; }
+
+  int Encode(uint8_t version, uint8_t padding, uint8_t count_or_format,
+             uint8_t payload_type, uint16_t length, uint8_t* buffer);
+
+ private:
+  uint8_t version_ : 2;
+  uint8_t padding_ : 1;
+  uint8_t count_or_format_ : 5;
+  uint8_t payload_type_ : 8;
+  uint16_t length_ : 16;
+};
+
+#endif