| /* |
| * 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. |
| */ |
| |
| /* |
| * deflickering.h |
| */ |
| |
| #ifndef VPM_DEFLICKERING_H |
| #define VPM_DEFLICKERING_H |
| |
| #include "webrtc/modules/video_processing/main/interface/video_processing.h" |
| #include "webrtc/typedefs.h" |
| |
| #include <cstring> // NULL |
| |
| namespace webrtc { |
| |
| class VPMDeflickering |
| { |
| public: |
| VPMDeflickering(); |
| ~VPMDeflickering(); |
| |
| int32_t ChangeUniqueId(int32_t id); |
| |
| void Reset(); |
| |
| int32_t ProcessFrame(I420VideoFrame* frame, |
| VideoProcessingModule::FrameStats* stats); |
| private: |
| int32_t PreDetection(uint32_t timestamp, |
| const VideoProcessingModule::FrameStats& stats); |
| |
| int32_t DetectFlicker(); |
| |
| enum { kMeanBufferLength = 32 }; |
| enum { kFrameHistorySize = 15 }; |
| enum { kNumProbs = 12 }; |
| enum { kNumQuants = kNumProbs + 2 }; |
| enum { kMaxOnlyLength = 5 }; |
| |
| int32_t _id; |
| |
| uint32_t _meanBufferLength; |
| uint8_t _detectionState; // 0: No flickering |
| // 1: Flickering detected |
| // 2: In flickering |
| int32_t _meanBuffer[kMeanBufferLength]; |
| uint32_t _timestampBuffer[kMeanBufferLength]; |
| uint32_t _frameRate; |
| static const uint16_t _probUW16[kNumProbs]; |
| static const uint16_t _weightUW16[kNumQuants - kMaxOnlyLength]; |
| uint8_t _quantHistUW8[kFrameHistorySize][kNumQuants]; |
| }; |
| |
| } //namespace |
| |
| #endif // VPM_DEFLICKERING_H |