7d8c72e2db
This change basicly re-enables the change of r1220, which was reverted in r1235 due to Clang issues. The difference from r1220 is that the TickTimeInterface was renamed to TickTimeClass, and no longer inherits from TickTime. Review URL: http://webrtc-codereview.appspot.com/335006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@1267 4adac7df-926f-26a2-2b94-8c16560cd09d
67 lines
2.5 KiB
C++
67 lines
2.5 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.
|
|
*/
|
|
|
|
#ifndef WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
|
|
#define WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
|
|
|
|
#include "typedefs.h"
|
|
|
|
namespace webrtc
|
|
{
|
|
|
|
class VCMInterFrameDelay
|
|
{
|
|
public:
|
|
VCMInterFrameDelay(int64_t currentWallClock);
|
|
|
|
// Resets the estimate. Zeros are given as parameters.
|
|
void Reset(int64_t currentWallClock);
|
|
|
|
// Calculates the delay of a frame with the given timestamp.
|
|
// This method is called when the frame is complete.
|
|
//
|
|
// Input:
|
|
// - timestamp : RTP timestamp of a received frame
|
|
// - *delay : Pointer to memory where the result should be stored
|
|
// - currentWallClock : The current time in milliseconds.
|
|
// Should be -1 for normal operation, only used for testing.
|
|
// Return value : true if OK, false when reordered timestamps
|
|
bool CalculateDelay(WebRtc_UWord32 timestamp,
|
|
WebRtc_Word64 *delay,
|
|
int64_t currentWallClock);
|
|
|
|
// Returns the current difference between incoming timestamps
|
|
//
|
|
// Return value : Wrap-around compensated difference between incoming
|
|
// timestamps.
|
|
WebRtc_UWord32 CurrentTimeStampDiffMs() const;
|
|
|
|
private:
|
|
// Controls if the RTP timestamp counter has had a wrap around
|
|
// between the current and the previously received frame.
|
|
//
|
|
// Input:
|
|
// - timestmap : RTP timestamp of the current frame.
|
|
void CheckForWrapArounds(WebRtc_UWord32 timestamp);
|
|
|
|
WebRtc_Word64 _zeroWallClock; // Local timestamp of the first video packet received
|
|
WebRtc_Word32 _wrapArounds; // Number of wrapArounds detected
|
|
// The previous timestamp passed to the delay estimate
|
|
WebRtc_UWord32 _prevTimestamp;
|
|
// The previous wall clock timestamp used by the delay estimate
|
|
WebRtc_Word64 _prevWallClock;
|
|
// Wrap-around compensated difference between incoming timestamps
|
|
WebRtc_Word64 _dTS;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_MODULES_VIDEO_CODING_INTER_FRAME_DELAY_H_
|