1116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch// Copyright 2014 The Chromium Authors. All rights reserved. 258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// found in the LICENSE file. 458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 5116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#ifndef MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 6116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#define MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 8116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#include "media/cast/net/cast_transport_defines.h" 9116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#include "media/cast/net/rtp/rtp_receiver_defines.h" 1058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 1158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)namespace media { 1258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)namespace cast { 1358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 145c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// TODO(miu): RtpParser and RtpPacketizer should be consolidated into a single 155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// module that handles all RTP/Cast packet serialization and deserialization 165c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu// throughout the media/cast library. 1758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)class RtpParser { 1858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) public: 195c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu RtpParser(uint32 expected_sender_ssrc, uint8 expected_payload_type); 2058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 21effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch virtual ~RtpParser(); 2258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // Parses the |packet|, expecting an RTP header along with a Cast header at 245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // the beginning of the the RTP payload. This method populates the structure 255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // pointed to by |rtp_header| and sets the |payload_data| pointer and 265c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // |payload_size| to the memory region within |packet| containing the Cast 275c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // payload data. Returns false if the data appears to be invalid, is not from 285c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // the expected sender (as identified by the SSRC field), or is not the 295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // expected payload type. 305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool ParsePacket(const uint8* packet, 315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) size_t length, 325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu RtpCastHeader* rtp_header, 335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu const uint8** payload_data, 345c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu size_t* payload_size); 3558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 365c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu private: 375c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu const uint32 expected_sender_ssrc_; 385c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu const uint8 expected_payload_type_; 39116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch FrameIdWrapHelper frame_id_wrap_helper_; 405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(RtpParser); 4258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)}; 4358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 4458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} // namespace cast 4558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} // namespace media 4658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 47116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#endif // MEDIA_CAST_NET_RTP_RTP_PARSER_H_ 48