4c059d87b3
Also fixes a couple of bugs related to sequence number wrap found while testing. BUG= TEST= Review URL: http://webrtc-codereview.appspot.com/218001 git-svn-id: http://webrtc.googlecode.com/svn/trunk@732 4adac7df-926f-26a2-2b94-8c16560cd09d
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "jitter_buffer_common.h"
|
|
|
|
#include <cstdlib>
|
|
|
|
namespace webrtc {
|
|
|
|
WebRtc_UWord32 LatestTimestamp(WebRtc_UWord32 timestamp1,
|
|
WebRtc_UWord32 timestamp2,
|
|
bool* has_wrapped) {
|
|
bool wrap = (timestamp2 < 0x0000ffff && timestamp1 > 0xffff0000) ||
|
|
(timestamp2 > 0xffff0000 && timestamp1 < 0x0000ffff);
|
|
if (has_wrapped != NULL)
|
|
*has_wrapped = wrap;
|
|
if (timestamp1 > timestamp2 && !wrap)
|
|
return timestamp1;
|
|
else if (timestamp1 <= timestamp2 && !wrap)
|
|
return timestamp2;
|
|
else if (timestamp1 < timestamp2 && wrap)
|
|
return timestamp1;
|
|
else
|
|
return timestamp2;
|
|
}
|
|
|
|
WebRtc_Word32 LatestSequenceNumber(WebRtc_Word32 seq_num1,
|
|
WebRtc_Word32 seq_num2,
|
|
bool* has_wrapped) {
|
|
if (seq_num1 < 0 && seq_num2 < 0)
|
|
return -1;
|
|
else if (seq_num1 < 0)
|
|
return seq_num2;
|
|
else if (seq_num2 < 0)
|
|
return seq_num1;
|
|
|
|
bool wrap = (seq_num1 < 0x00ff && seq_num2 > 0xff00) ||
|
|
(seq_num1 > 0xff00 && seq_num2 < 0x00ff);
|
|
|
|
if (has_wrapped != NULL)
|
|
*has_wrapped = wrap;
|
|
|
|
if (seq_num2 > seq_num1 && !wrap)
|
|
return seq_num2;
|
|
else if (seq_num2 <= seq_num1 && !wrap)
|
|
return seq_num1;
|
|
else if (seq_num2 < seq_num1 && wrap)
|
|
return seq_num2;
|
|
else
|
|
return seq_num1;
|
|
}
|
|
|
|
} // namespace webrtc
|