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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_receiver/rtp_parser/test/rtp_packet_builder.h" | 5 #include "media/cast/rtp_receiver/rtp_parser/test/rtp_packet_builder.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "net/base/big_endian.h" | 8 #include "net/base/big_endian.h" |
9 | 9 |
10 namespace media { | 10 namespace media { |
11 namespace cast { | 11 namespace cast { |
12 | 12 |
13 const uint32 kCastRtpHeaderLength = 7; | 13 const uint32 kCastRtpHeaderLength = 7; |
14 const uint32 kGenericRtpHeaderLength = 12; | 14 const uint32 kGenericRtpHeaderLength = 12; |
15 static const uint8 kRtpMarkerBitMask = 0x80; | 15 static const uint8 kRtpMarkerBitMask = 0x80; |
16 | 16 |
17 RtpPacketBuilder::RtpPacketBuilder() | 17 RtpPacketBuilder::RtpPacketBuilder() |
18 : is_key_(false), | 18 : is_key_(false), |
19 frame_id_(0), | 19 frame_id_(0), |
20 packet_id_(0), | 20 packet_id_(0), |
21 max_packet_id_(0), | 21 max_packet_id_(0), |
22 reference_frame_id_(0), | 22 reference_frame_id_(0), |
23 is_reference_set_(false), | 23 is_reference_set_(false), |
24 timestamp_(0), | 24 timestamp_(0), |
25 sequence_number_(0), | 25 sequence_number_(0), |
26 marker_(false), | 26 marker_(false), |
27 payload_type_(0), | 27 payload_type_(0), |
28 ssrc_(0) {} | 28 ssrc_(0) {} |
29 | 29 |
30 void RtpPacketBuilder::SetKeyFrame(bool is_key) { | 30 void RtpPacketBuilder::SetKeyFrame(bool is_key) { is_key_ = is_key; } |
31 is_key_ = is_key; | |
32 } | |
33 | 31 |
34 void RtpPacketBuilder::SetFrameId(uint32 frame_id) { | 32 void RtpPacketBuilder::SetFrameId(uint32 frame_id) { frame_id_ = frame_id; } |
35 frame_id_ = frame_id; | |
36 } | |
37 | 33 |
38 void RtpPacketBuilder::SetPacketId(uint16 packet_id) { | 34 void RtpPacketBuilder::SetPacketId(uint16 packet_id) { packet_id_ = packet_id; } |
39 packet_id_ = packet_id; | |
40 } | |
41 | 35 |
42 void RtpPacketBuilder::SetMaxPacketId(uint16 max_packet_id) { | 36 void RtpPacketBuilder::SetMaxPacketId(uint16 max_packet_id) { |
43 max_packet_id_ = max_packet_id; | 37 max_packet_id_ = max_packet_id; |
44 } | 38 } |
45 | 39 |
46 void RtpPacketBuilder::SetReferenceFrameId(uint32 reference_frame_id, | 40 void RtpPacketBuilder::SetReferenceFrameId(uint32 reference_frame_id, |
47 bool is_set) { | 41 bool is_set) { |
48 is_reference_set_ = is_set; | 42 is_reference_set_ = is_set; |
49 if (is_set) | 43 if (is_set) |
50 reference_frame_id_ = reference_frame_id; | 44 reference_frame_id_ = reference_frame_id; |
51 } | 45 } |
52 void RtpPacketBuilder::SetTimestamp(uint32 timestamp) { | 46 void RtpPacketBuilder::SetTimestamp(uint32 timestamp) { |
53 timestamp_ = timestamp; | 47 timestamp_ = timestamp; |
54 } | 48 } |
55 | 49 |
56 void RtpPacketBuilder::SetSequenceNumber(uint16 sequence_number) { | 50 void RtpPacketBuilder::SetSequenceNumber(uint16 sequence_number) { |
57 sequence_number_ = sequence_number; | 51 sequence_number_ = sequence_number; |
58 } | 52 } |
59 | 53 |
60 void RtpPacketBuilder::SetMarkerBit(bool marker) { | 54 void RtpPacketBuilder::SetMarkerBit(bool marker) { marker_ = marker; } |
61 marker_ = marker; | |
62 } | |
63 | 55 |
64 void RtpPacketBuilder::SetPayloadType(int payload_type) { | 56 void RtpPacketBuilder::SetPayloadType(int payload_type) { |
65 payload_type_ = payload_type; | 57 payload_type_ = payload_type; |
66 } | 58 } |
67 | 59 |
68 void RtpPacketBuilder::SetSsrc(uint32 ssrc) { | 60 void RtpPacketBuilder::SetSsrc(uint32 ssrc) { ssrc_ = ssrc; } |
69 ssrc_ = ssrc; | |
70 } | |
71 | 61 |
72 void RtpPacketBuilder::BuildHeader(uint8* data, uint32 data_length) { | 62 void RtpPacketBuilder::BuildHeader(uint8* data, uint32 data_length) { |
73 BuildCommonHeader(data, data_length); | 63 BuildCommonHeader(data, data_length); |
74 BuildCastHeader(data + kGenericRtpHeaderLength, | 64 BuildCastHeader(data + kGenericRtpHeaderLength, |
75 data_length - kGenericRtpHeaderLength); | 65 data_length - kGenericRtpHeaderLength); |
76 } | 66 } |
77 | 67 |
78 void RtpPacketBuilder::BuildCastHeader(uint8* data, uint32 data_length) { | 68 void RtpPacketBuilder::BuildCastHeader(uint8* data, uint32 data_length) { |
79 // Build header. | 69 // Build header. |
80 DCHECK_LE(kCastRtpHeaderLength, data_length); | 70 DCHECK_LE(kCastRtpHeaderLength, data_length); |
81 // Set the first 7 bytes to 0. | 71 // Set the first 7 bytes to 0. |
82 memset(data, 0, kCastRtpHeaderLength); | 72 memset(data, 0, kCastRtpHeaderLength); |
83 net::BigEndianWriter big_endian_writer(data, 56); | 73 net::BigEndianWriter big_endian_writer(data, 56); |
84 big_endian_writer.WriteU8( | 74 big_endian_writer.WriteU8((is_key_ ? 0x80 : 0) | |
85 (is_key_ ? 0x80 : 0) | (is_reference_set_ ? 0x40 : 0)); | 75 (is_reference_set_ ? 0x40 : 0)); |
86 big_endian_writer.WriteU8(frame_id_); | 76 big_endian_writer.WriteU8(frame_id_); |
87 big_endian_writer.WriteU16(packet_id_); | 77 big_endian_writer.WriteU16(packet_id_); |
88 big_endian_writer.WriteU16(max_packet_id_); | 78 big_endian_writer.WriteU16(max_packet_id_); |
89 if (is_reference_set_) { | 79 if (is_reference_set_) { |
90 big_endian_writer.WriteU8(reference_frame_id_); | 80 big_endian_writer.WriteU8(reference_frame_id_); |
91 } | 81 } |
92 } | 82 } |
93 | 83 |
94 void RtpPacketBuilder::BuildCommonHeader(uint8* data, uint32 data_length) { | 84 void RtpPacketBuilder::BuildCommonHeader(uint8* data, uint32 data_length) { |
95 DCHECK_LE(kGenericRtpHeaderLength, data_length); | 85 DCHECK_LE(kGenericRtpHeaderLength, data_length); |
96 net::BigEndianWriter big_endian_writer(data, 96); | 86 net::BigEndianWriter big_endian_writer(data, 96); |
97 big_endian_writer.WriteU8(0x80); | 87 big_endian_writer.WriteU8(0x80); |
98 big_endian_writer.WriteU8(payload_type_ | (marker_ ? kRtpMarkerBitMask : 0)); | 88 big_endian_writer.WriteU8(payload_type_ | (marker_ ? kRtpMarkerBitMask : 0)); |
99 big_endian_writer.WriteU16(sequence_number_); | 89 big_endian_writer.WriteU16(sequence_number_); |
100 big_endian_writer.WriteU32(timestamp_); | 90 big_endian_writer.WriteU32(timestamp_); |
101 big_endian_writer.WriteU32(ssrc_); | 91 big_endian_writer.WriteU32(ssrc_); |
102 } | 92 } |
103 | 93 |
104 } // namespace cast | 94 } // namespace cast |
105 } // namespace media | 95 } // namespace media |
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