6f3d8fcfc0
BUG=1662 R=stefan@webrtc.org Review URL: https://webrtc-codereview.appspot.com/1558004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4109 4adac7df-926f-26a2-2b94-8c16560cd09d
66 lines
1.8 KiB
C++
66 lines
1.8 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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* deflickering.h
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*/
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#ifndef VPM_DEFLICKERING_H
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#define VPM_DEFLICKERING_H
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#include "webrtc/modules/video_processing/main/interface/video_processing.h"
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#include "webrtc/typedefs.h"
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#include <cstring> // NULL
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namespace webrtc {
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class VPMDeflickering
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{
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public:
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VPMDeflickering();
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~VPMDeflickering();
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int32_t ChangeUniqueId(int32_t id);
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void Reset();
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int32_t ProcessFrame(I420VideoFrame* frame,
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VideoProcessingModule::FrameStats* stats);
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private:
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int32_t PreDetection(uint32_t timestamp,
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const VideoProcessingModule::FrameStats& stats);
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int32_t DetectFlicker();
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enum { kMeanBufferLength = 32 };
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enum { kFrameHistorySize = 15 };
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enum { kNumProbs = 12 };
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enum { kNumQuants = kNumProbs + 2 };
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enum { kMaxOnlyLength = 5 };
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int32_t _id;
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uint32_t _meanBufferLength;
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uint8_t _detectionState; // 0: No flickering
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// 1: Flickering detected
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// 2: In flickering
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int32_t _meanBuffer[kMeanBufferLength];
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uint32_t _timestampBuffer[kMeanBufferLength];
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uint32_t _frameRate;
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static const uint16_t _probUW16[kNumProbs];
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static const uint16_t _weightUW16[kNumQuants - kMaxOnlyLength];
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uint8_t _quantHistUW8[kFrameHistorySize][kNumQuants];
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};
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} //namespace
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#endif // VPM_DEFLICKERING_H
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