1 /*
2  *  Copyright 2020 The WebRTC project authors. All Rights Reserved.
3  *
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
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #include "pc/data_channel_utils.h"
12 
13 #include <utility>
14 
15 #include "rtc_base/checks.h"
16 
17 namespace webrtc {
18 
Empty() const19 bool PacketQueue::Empty() const {
20   return packets_.empty();
21 }
22 
PopFront()23 std::unique_ptr<DataBuffer> PacketQueue::PopFront() {
24   RTC_DCHECK(!packets_.empty());
25   byte_count_ -= packets_.front()->size();
26   std::unique_ptr<DataBuffer> packet = std::move(packets_.front());
27   packets_.pop_front();
28   return packet;
29 }
30 
PushFront(std::unique_ptr<DataBuffer> packet)31 void PacketQueue::PushFront(std::unique_ptr<DataBuffer> packet) {
32   byte_count_ += packet->size();
33   packets_.push_front(std::move(packet));
34 }
35 
PushBack(std::unique_ptr<DataBuffer> packet)36 void PacketQueue::PushBack(std::unique_ptr<DataBuffer> packet) {
37   byte_count_ += packet->size();
38   packets_.push_back(std::move(packet));
39 }
40 
Clear()41 void PacketQueue::Clear() {
42   packets_.clear();
43   byte_count_ = 0;
44 }
45 
Swap(PacketQueue * other)46 void PacketQueue::Swap(PacketQueue* other) {
47   size_t other_byte_count = other->byte_count_;
48   other->byte_count_ = byte_count_;
49   byte_count_ = other_byte_count;
50 
51   other->packets_.swap(packets_);
52 }
53 
IsSctpLike(cricket::DataChannelType type)54 bool IsSctpLike(cricket::DataChannelType type) {
55   return type == cricket::DCT_SCTP;
56 }
57 
58 }  // namespace webrtc
59