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