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| 1 // Copyright 2013 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_RTP_RECEIVER_RTP_PARSER_RTP_PARSER_H_ | |
| 6 #define MEDIA_CAST_RTP_RECEIVER_RTP_PARSER_RTP_PARSER_H_ | |
| 7 | |
| 8 #include "media/cast/rtp_receiver/rtp_receiver_defines.h" | |
| 9 #include "media/cast/transport/cast_transport_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 transport::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_RTP_RECEIVER_RTP_PARSER_RTP_PARSER_H_ | |
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