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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/cast/rtp_sender/rtp_packetizer/test/rtp_header_parser.h" | 5 #include "media/cast/net/rtp_sender/rtp_packetizer/test/rtp_header_parser.h" |
6 | 6 |
7 #include <cstddef> | 7 #include <cstddef> |
8 | 8 |
9 #include "net/base/big_endian.h" | 9 #include "net/base/big_endian.h" |
10 | 10 |
11 namespace media { | 11 namespace media { |
12 namespace cast { | 12 namespace cast { |
13 | 13 |
14 static const uint8 kCastKeyFrameBitMask = 0x80; | 14 static const uint8 kCastKeyFrameBitMask = 0x80; |
15 static const uint8 kCastReferenceFrameIdBitMask = 0x40; | 15 static const uint8 kCastReferenceFrameIdBitMask = 0x40; |
16 static const size_t kRtpCommonHeaderLength = 12; | 16 static const size_t kRtpCommonHeaderLength = 12; |
17 static const size_t kRtpCastHeaderLength = 12; | 17 static const size_t kRtpCastHeaderLength = 12; |
18 | 18 |
19 | 19 |
20 RtpHeaderParser::RtpHeaderParser(const uint8* rtp_data, | 20 RtpHeaderParser::RtpHeaderParser(const uint8* rtp_data, |
21 size_t rtp_data_length) | 21 size_t rtp_data_length) |
22 : rtp_data_begin_(rtp_data), | 22 : rtp_data_begin_(rtp_data), |
23 length_(rtp_data_length) {} | 23 length_(rtp_data_length) {} |
24 | 24 |
25 RtpHeaderParser::~RtpHeaderParser() {} | 25 RtpHeaderParser::~RtpHeaderParser() {} |
26 | 26 |
27 bool RtpHeaderParser::Parse(RtpCastHeader* parsed_packet) const { | 27 bool RtpHeaderParser::Parse(RtpCastTestHeader* parsed_packet) const { |
28 if (length_ < kRtpCommonHeaderLength + kRtpCastHeaderLength) | 28 if (length_ < kRtpCommonHeaderLength + kRtpCastHeaderLength) |
29 return false; | 29 return false; |
30 if (!ParseCommon(parsed_packet)) return false; | 30 if (!ParseCommon(parsed_packet)) return false; |
31 return ParseCast(parsed_packet); | 31 return ParseCast(parsed_packet); |
32 } | 32 } |
33 | 33 |
34 bool RtpHeaderParser::ParseCommon(RtpCastHeader* parsed_packet) const { | 34 bool RtpHeaderParser::ParseCommon(RtpCastTestHeader* parsed_packet) const { |
35 const uint8 version = rtp_data_begin_[0] >> 6; | 35 const uint8 version = rtp_data_begin_[0] >> 6; |
36 if (version != 2) { | 36 if (version != 2) { |
37 return false; | 37 return false; |
38 } | 38 } |
39 | 39 |
40 const uint8 num_csrcs = rtp_data_begin_[0] & 0x0f; | 40 const uint8 num_csrcs = rtp_data_begin_[0] & 0x0f; |
41 const bool marker = ((rtp_data_begin_[1] & 0x80) == 0) ? false : true; | 41 const bool marker = ((rtp_data_begin_[1] & 0x80) == 0) ? false : true; |
42 const uint8 payload_type = rtp_data_begin_[1] & 0x7f; | 42 const uint8 payload_type = rtp_data_begin_[1] & 0x7f; |
43 const uint16 sequence_number = (rtp_data_begin_[2] << 8) + | 43 const uint16 sequence_number = (rtp_data_begin_[2] << 8) + |
44 rtp_data_begin_[3]; | 44 rtp_data_begin_[3]; |
45 | 45 |
46 const uint8* ptr = &rtp_data_begin_[4]; | 46 const uint8* ptr = &rtp_data_begin_[4]; |
47 | 47 |
48 net::BigEndianReader big_endian_reader(ptr, 8); | 48 net::BigEndianReader big_endian_reader(ptr, 8); |
49 uint32 rtp_timestamp, ssrc; | 49 uint32 rtp_timestamp, ssrc; |
50 big_endian_reader.ReadU32(&rtp_timestamp); | 50 big_endian_reader.ReadU32(&rtp_timestamp); |
51 big_endian_reader.ReadU32(&ssrc); | 51 big_endian_reader.ReadU32(&ssrc); |
52 | 52 |
53 const uint8 csrc_octs = num_csrcs * 4; | 53 const uint8 csrc_octs = num_csrcs * 4; |
54 | 54 |
55 parsed_packet->webrtc.header.markerBit = marker; | 55 parsed_packet->marker = marker; |
56 parsed_packet->webrtc.header.payloadType = payload_type; | 56 parsed_packet->payload_type = payload_type; |
57 parsed_packet->webrtc.header.sequenceNumber = sequence_number; | 57 parsed_packet->sequence_number = sequence_number; |
58 parsed_packet->webrtc.header.timestamp = rtp_timestamp; | 58 parsed_packet->rtp_timestamp = rtp_timestamp; |
59 parsed_packet->webrtc.header.ssrc = ssrc; | 59 parsed_packet->ssrc = ssrc; |
60 parsed_packet->webrtc.header.numCSRCs = num_csrcs; | 60 parsed_packet->num_csrcs = num_csrcs; |
61 | 61 |
62 parsed_packet->webrtc.type.Audio.numEnergy = | 62 parsed_packet->audio_num_energy = parsed_packet->num_csrcs; |
63 parsed_packet->webrtc.header.numCSRCs; | |
64 | 63 |
65 parsed_packet->webrtc.header.headerLength = 12 + csrc_octs; | 64 parsed_packet->header_length = 12 + csrc_octs; |
66 return true; | 65 return true; |
67 } | 66 } |
68 | 67 |
69 bool RtpHeaderParser::ParseCast(RtpCastHeader* parsed_packet) const { | 68 bool RtpHeaderParser::ParseCast(RtpCastTestHeader* parsed_packet) const { |
70 const uint8* data = rtp_data_begin_ + kRtpCommonHeaderLength; | 69 const uint8* data = rtp_data_begin_ + kRtpCommonHeaderLength; |
71 parsed_packet->is_key_frame = (data[0] & kCastKeyFrameBitMask); | 70 parsed_packet->is_key_frame = (data[0] & kCastKeyFrameBitMask); |
72 parsed_packet->is_reference = (data[0] & kCastReferenceFrameIdBitMask); | 71 parsed_packet->is_reference = (data[0] & kCastReferenceFrameIdBitMask); |
73 parsed_packet->frame_id = frame_id_wrap_helper_.MapTo32bitsFrameId(data[1]); | 72 parsed_packet->frame_id = frame_id_wrap_helper_.MapTo32bitsFrameId(data[1]); |
74 | 73 |
75 net::BigEndianReader big_endian_reader(data + 2, 8); | 74 net::BigEndianReader big_endian_reader(data + 2, 8); |
76 big_endian_reader.ReadU16(&parsed_packet->packet_id); | 75 big_endian_reader.ReadU16(&parsed_packet->packet_id); |
77 big_endian_reader.ReadU16(&parsed_packet->max_packet_id); | 76 big_endian_reader.ReadU16(&parsed_packet->max_packet_id); |
78 | 77 |
79 if (parsed_packet->is_reference) { | 78 if (parsed_packet->is_reference) { |
80 parsed_packet->reference_frame_id = | 79 parsed_packet->reference_frame_id = |
81 reference_frame_id_wrap_helper_.MapTo32bitsFrameId(data[6]); | 80 reference_frame_id_wrap_helper_.MapTo32bitsFrameId(data[6]); |
82 } | 81 } |
83 return true; | 82 return true; |
84 } | 83 } |
85 | 84 |
86 } // namespace cast | 85 } // namespace cast |
87 } // namespace media | 86 } // namespace media |
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