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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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/net/rtp/rtp_packet_builder.h" | 5 #include "media/cast/net/rtp/rtp_packet_builder.h" |
6 | 6 |
7 #include "base/big_endian.h" | 7 #include "base/big_endian.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 | 9 |
10 namespace media { | 10 namespace media { |
11 namespace cast { | 11 namespace cast { |
12 | 12 |
13 RtpPacketBuilder::RtpPacketBuilder() | 13 RtpPacketBuilder::RtpPacketBuilder() |
14 : is_key_(false), | 14 : is_key_(false), |
15 frame_id_(0), | 15 frame_id_(0), |
16 packet_id_(0), | 16 packet_id_(0), |
17 max_packet_id_(0), | 17 max_packet_id_(0), |
18 reference_frame_id_(0), | 18 reference_frame_id_(0), |
19 timestamp_(0), | 19 timestamp_(0), |
20 sequence_number_(0), | 20 sequence_number_(0), |
21 marker_(false), | 21 marker_(false), |
22 payload_type_(0), | 22 payload_type_(0), |
23 ssrc_(0) {} | 23 ssrc_(0) {} |
24 | 24 |
25 void RtpPacketBuilder::SetKeyFrame(bool is_key) { is_key_ = is_key; } | 25 void RtpPacketBuilder::SetKeyFrame(bool is_key) { is_key_ = is_key; } |
26 | 26 |
27 void RtpPacketBuilder::SetFrameIds(uint32 frame_id, uint32 reference_frame_id) { | 27 void RtpPacketBuilder::SetFrameIds(uint32_t frame_id, |
| 28 uint32_t reference_frame_id) { |
28 frame_id_ = frame_id; | 29 frame_id_ = frame_id; |
29 reference_frame_id_ = reference_frame_id; | 30 reference_frame_id_ = reference_frame_id; |
30 } | 31 } |
31 | 32 |
32 void RtpPacketBuilder::SetPacketId(uint16 packet_id) { packet_id_ = packet_id; } | 33 void RtpPacketBuilder::SetPacketId(uint16_t packet_id) { |
| 34 packet_id_ = packet_id; |
| 35 } |
33 | 36 |
34 void RtpPacketBuilder::SetMaxPacketId(uint16 max_packet_id) { | 37 void RtpPacketBuilder::SetMaxPacketId(uint16_t max_packet_id) { |
35 max_packet_id_ = max_packet_id; | 38 max_packet_id_ = max_packet_id; |
36 } | 39 } |
37 | 40 |
38 void RtpPacketBuilder::SetTimestamp(uint32 timestamp) { | 41 void RtpPacketBuilder::SetTimestamp(uint32_t timestamp) { |
39 timestamp_ = timestamp; | 42 timestamp_ = timestamp; |
40 } | 43 } |
41 | 44 |
42 void RtpPacketBuilder::SetSequenceNumber(uint16 sequence_number) { | 45 void RtpPacketBuilder::SetSequenceNumber(uint16_t sequence_number) { |
43 sequence_number_ = sequence_number; | 46 sequence_number_ = sequence_number; |
44 } | 47 } |
45 | 48 |
46 void RtpPacketBuilder::SetMarkerBit(bool marker) { marker_ = marker; } | 49 void RtpPacketBuilder::SetMarkerBit(bool marker) { marker_ = marker; } |
47 | 50 |
48 void RtpPacketBuilder::SetPayloadType(int payload_type) { | 51 void RtpPacketBuilder::SetPayloadType(int payload_type) { |
49 payload_type_ = payload_type; | 52 payload_type_ = payload_type; |
50 } | 53 } |
51 | 54 |
52 void RtpPacketBuilder::SetSsrc(uint32 ssrc) { ssrc_ = ssrc; } | 55 void RtpPacketBuilder::SetSsrc(uint32_t ssrc) { |
| 56 ssrc_ = ssrc; |
| 57 } |
53 | 58 |
54 void RtpPacketBuilder::BuildHeader(uint8* data, uint32 data_length) { | 59 void RtpPacketBuilder::BuildHeader(uint8_t* data, uint32_t data_length) { |
55 BuildCommonHeader(data, data_length); | 60 BuildCommonHeader(data, data_length); |
56 BuildCastHeader(data + kRtpHeaderLength, data_length - kRtpHeaderLength); | 61 BuildCastHeader(data + kRtpHeaderLength, data_length - kRtpHeaderLength); |
57 } | 62 } |
58 | 63 |
59 void RtpPacketBuilder::BuildCastHeader(uint8* data, uint32 data_length) { | 64 void RtpPacketBuilder::BuildCastHeader(uint8_t* data, uint32_t data_length) { |
60 // Build header. | 65 // Build header. |
61 DCHECK_LE(kCastHeaderLength, data_length); | 66 DCHECK_LE(kCastHeaderLength, data_length); |
62 // Set the first 7 bytes to 0. | 67 // Set the first 7 bytes to 0. |
63 memset(data, 0, kCastHeaderLength); | 68 memset(data, 0, kCastHeaderLength); |
64 base::BigEndianWriter big_endian_writer(reinterpret_cast<char*>(data), 56); | 69 base::BigEndianWriter big_endian_writer(reinterpret_cast<char*>(data), 56); |
65 const bool includes_specific_frame_reference = | 70 const bool includes_specific_frame_reference = |
66 (is_key_ && (reference_frame_id_ != frame_id_)) || | 71 (is_key_ && (reference_frame_id_ != frame_id_)) || |
67 (!is_key_ && (reference_frame_id_ != (frame_id_ - 1))); | 72 (!is_key_ && (reference_frame_id_ != (frame_id_ - 1))); |
68 big_endian_writer.WriteU8((is_key_ ? 0x80 : 0) | | 73 big_endian_writer.WriteU8((is_key_ ? 0x80 : 0) | |
69 (includes_specific_frame_reference ? 0x40 : 0)); | 74 (includes_specific_frame_reference ? 0x40 : 0)); |
70 big_endian_writer.WriteU8(frame_id_); | 75 big_endian_writer.WriteU8(frame_id_); |
71 big_endian_writer.WriteU16(packet_id_); | 76 big_endian_writer.WriteU16(packet_id_); |
72 big_endian_writer.WriteU16(max_packet_id_); | 77 big_endian_writer.WriteU16(max_packet_id_); |
73 if (includes_specific_frame_reference) { | 78 if (includes_specific_frame_reference) { |
74 big_endian_writer.WriteU8(reference_frame_id_); | 79 big_endian_writer.WriteU8(reference_frame_id_); |
75 } | 80 } |
76 } | 81 } |
77 | 82 |
78 void RtpPacketBuilder::BuildCommonHeader(uint8* data, uint32 data_length) { | 83 void RtpPacketBuilder::BuildCommonHeader(uint8_t* data, uint32_t data_length) { |
79 DCHECK_LE(kRtpHeaderLength, data_length); | 84 DCHECK_LE(kRtpHeaderLength, data_length); |
80 base::BigEndianWriter big_endian_writer(reinterpret_cast<char*>(data), 96); | 85 base::BigEndianWriter big_endian_writer(reinterpret_cast<char*>(data), 96); |
81 big_endian_writer.WriteU8(0x80); | 86 big_endian_writer.WriteU8(0x80); |
82 big_endian_writer.WriteU8(payload_type_ | (marker_ ? kRtpMarkerBitMask : 0)); | 87 big_endian_writer.WriteU8(payload_type_ | (marker_ ? kRtpMarkerBitMask : 0)); |
83 big_endian_writer.WriteU16(sequence_number_); | 88 big_endian_writer.WriteU16(sequence_number_); |
84 big_endian_writer.WriteU32(timestamp_); | 89 big_endian_writer.WriteU32(timestamp_); |
85 big_endian_writer.WriteU32(ssrc_); | 90 big_endian_writer.WriteU32(ssrc_); |
86 } | 91 } |
87 | 92 |
88 } // namespace cast | 93 } // namespace cast |
89 } // namespace media | 94 } // namespace media |
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