1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 6 #define MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 7 8 #include "media/cast/net/cast_transport_defines.h" 9 #include "media/cast/net/rtp/rtp_receiver_defines.h" 10 11 namespace media { 12 namespace cast { 13 14 // TODO(miu): RtpParser and RtpPacketizer should be consolidated into a single 15 // module that handles all RTP/Cast packet serialization and deserialization 16 // throughout the media/cast library. 17 class RtpParser { 18 public: 19 RtpParser(uint32 expected_sender_ssrc, uint8 expected_payload_type); 20 21 virtual ~RtpParser(); 22 23 // Parses the |packet|, expecting an RTP header along with a Cast header at 24 // the beginning of the the RTP payload. This method populates the structure 25 // pointed to by |rtp_header| and sets the |payload_data| pointer and 26 // |payload_size| to the memory region within |packet| containing the Cast 27 // payload data. Returns false if the data appears to be invalid, is not from 28 // the expected sender (as identified by the SSRC field), or is not the 29 // expected payload type. 30 bool ParsePacket(const uint8* packet, 31 size_t length, 32 RtpCastHeader* rtp_header, 33 const uint8** payload_data, 34 size_t* payload_size); 35 36 private: 37 const uint32 expected_sender_ssrc_; 38 const uint8 expected_payload_type_; 39 FrameIdWrapHelper frame_id_wrap_helper_; 40 41 DISALLOW_COPY_AND_ASSIGN(RtpParser); 42 }; 43 44 } // namespace cast 45 } // namespace media 46 47 #endif // MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 48
