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/*
* 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_PROCESSING_VIDEO_DECIMATOR_H_
#define WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_
#include "webrtc/modules/include/module_common_types.h"
#include "webrtc/typedefs.h"
namespace webrtc {
class VPMVideoDecimator {
public:
VPMVideoDecimator();
~VPMVideoDecimator();
void Reset();
void EnableTemporalDecimation(bool enable);
void SetTargetFramerate(int frame_rate);
bool DropFrame();
void UpdateIncomingframe_rate();
// Get Decimated Frame Rate/Dimensions.
uint32_t GetDecimatedFrameRate();
// Get input frame rate.
uint32_t Inputframe_rate();
private:
void ProcessIncomingframe_rate(int64_t now);
enum { kFrameCountHistory_size = 90 };
enum { kFrameHistoryWindowMs = 2000 };
// Temporal decimation.
int32_t overshoot_modifier_;
uint32_t drop_count_;
uint32_t keep_count_;
uint32_t target_frame_rate_;
float incoming_frame_rate_;
int64_t incoming_frame_times_[kFrameCountHistory_size];
bool enable_temporal_decimation_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_PROCESSING_VIDEO_DECIMATOR_H_
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