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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/remb.h" | 11 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/remb.h" |
12 | 12 |
| 13 #include <utility> |
| 14 |
13 #include "webrtc/base/checks.h" | 15 #include "webrtc/base/checks.h" |
14 #include "webrtc/base/logging.h" | 16 #include "webrtc/base/logging.h" |
15 #include "webrtc/modules/rtp_rtcp/source/byte_io.h" | 17 #include "webrtc/modules/rtp_rtcp/source/byte_io.h" |
16 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/common_header.h" | 18 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/common_header.h" |
17 | 19 |
18 namespace webrtc { | 20 namespace webrtc { |
19 namespace rtcp { | 21 namespace rtcp { |
20 constexpr uint8_t Remb::kFeedbackMessageType; | 22 constexpr uint8_t Remb::kFeedbackMessageType; |
21 // Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb). | 23 // Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb). |
22 // | 24 // |
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74 ssrcs_.clear(); | 76 ssrcs_.clear(); |
75 ssrcs_.reserve(number_of_ssrcs); | 77 ssrcs_.reserve(number_of_ssrcs); |
76 for (uint8_t i = 0; i < number_of_ssrcs; ++i) { | 78 for (uint8_t i = 0; i < number_of_ssrcs; ++i) { |
77 ssrcs_.push_back(ByteReader<uint32_t>::ReadBigEndian(next_ssrc)); | 79 ssrcs_.push_back(ByteReader<uint32_t>::ReadBigEndian(next_ssrc)); |
78 next_ssrc += sizeof(uint32_t); | 80 next_ssrc += sizeof(uint32_t); |
79 } | 81 } |
80 | 82 |
81 return true; | 83 return true; |
82 } | 84 } |
83 | 85 |
84 bool Remb::AppliesTo(uint32_t ssrc) { | 86 bool Remb::SetSsrcs(std::vector<uint32_t> ssrcs) { |
85 if (ssrcs_.size() >= kMaxNumberOfSsrcs) { | 87 if (ssrcs.size() > kMaxNumberOfSsrcs) { |
86 LOG(LS_WARNING) << "Max number of REMB feedback SSRCs reached."; | 88 LOG(LS_WARNING) << "Not enough space for all given SSRCs."; |
87 return false; | 89 return false; |
88 } | 90 } |
89 ssrcs_.push_back(ssrc); | 91 ssrcs_ = std::move(ssrcs); |
90 return true; | 92 return true; |
91 } | 93 } |
92 | 94 |
93 bool Remb::AppliesToMany(const std::vector<uint32_t>& ssrcs) { | |
94 if (ssrcs_.size() + ssrcs.size() > kMaxNumberOfSsrcs) { | |
95 LOG(LS_WARNING) << "Not enough space for all given SSRCs."; | |
96 return false; | |
97 } | |
98 // Append. | |
99 ssrcs_.insert(ssrcs_.end(), ssrcs.begin(), ssrcs.end()); | |
100 return true; | |
101 } | |
102 | |
103 bool Remb::Create(uint8_t* packet, | 95 bool Remb::Create(uint8_t* packet, |
104 size_t* index, | 96 size_t* index, |
105 size_t max_length, | 97 size_t max_length, |
106 RtcpPacket::PacketReadyCallback* callback) const { | 98 RtcpPacket::PacketReadyCallback* callback) const { |
107 while (*index + BlockLength() > max_length) { | 99 while (*index + BlockLength() > max_length) { |
108 if (!OnBufferFull(packet, index, callback)) | 100 if (!OnBufferFull(packet, index, callback)) |
109 return false; | 101 return false; |
110 } | 102 } |
111 size_t index_end = *index + BlockLength(); | 103 size_t index_end = *index + BlockLength(); |
112 CreateHeader(kFeedbackMessageType, kPacketType, HeaderLength(), packet, | 104 CreateHeader(kFeedbackMessageType, kPacketType, HeaderLength(), packet, |
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131 | 123 |
132 for (uint32_t ssrc : ssrcs_) { | 124 for (uint32_t ssrc : ssrcs_) { |
133 ByteWriter<uint32_t>::WriteBigEndian(packet + *index, ssrc); | 125 ByteWriter<uint32_t>::WriteBigEndian(packet + *index, ssrc); |
134 *index += sizeof(uint32_t); | 126 *index += sizeof(uint32_t); |
135 } | 127 } |
136 RTC_DCHECK_EQ(index_end, *index); | 128 RTC_DCHECK_EQ(index_end, *index); |
137 return true; | 129 return true; |
138 } | 130 } |
139 } // namespace rtcp | 131 } // namespace rtcp |
140 } // namespace webrtc | 132 } // namespace webrtc |
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