66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* video_decimator.h
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*/
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#ifndef VPM_VIDEO_DECIMATOR_H
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#define VPM_VIDEO_DECIMATOR_H
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#include "typedefs.h"
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#include "module_common_types.h"
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namespace webrtc {
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class VPMVideoDecimator
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{
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public:
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VPMVideoDecimator();
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~VPMVideoDecimator();
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void Reset();
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void EnableTemporalDecimation(bool enable);
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WebRtc_Word32 SetMaxFrameRate(WebRtc_UWord32 maxFrameRate);
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WebRtc_Word32 SetTargetFrameRate(WebRtc_UWord32 frameRate);
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bool DropFrame();
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void UpdateIncomingFrameRate();
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// Get Decimated Frame Rate/Dimensions
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WebRtc_UWord32 DecimatedFrameRate();
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//Get input frame rate
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WebRtc_UWord32 InputFrameRate();
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private:
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void ProcessIncomingFrameRate(WebRtc_Word64 now);
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enum { kFrameCountHistorySize = 90};
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enum { kFrameHistoryWindowMs = 2000};
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// Temporal decimation
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WebRtc_Word32 _overShootModifier;
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WebRtc_UWord32 _dropCount;
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WebRtc_UWord32 _keepCount;
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WebRtc_UWord32 _targetFrameRate;
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float _incomingFrameRate;
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WebRtc_UWord32 _maxFrameRate;
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WebRtc_Word64 _incomingFrameTimes[kFrameCountHistorySize];
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bool _enableTemporalDecimation;
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};
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} //namespace
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#endif
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