62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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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_CODING_CODEC_TIMER_H_
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#define WEBRTC_MODULES_VIDEO_CODING_CODEC_TIMER_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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{
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// MAX_HISTORY_SIZE * SHORT_FILTER_MS defines the window size in milliseconds
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#define MAX_HISTORY_SIZE 20
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#define SHORT_FILTER_MS 1000
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class VCMShortMaxSample
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{
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public:
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VCMShortMaxSample() : shortMax(0), timeMs(-1) {};
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WebRtc_Word32 shortMax;
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WebRtc_Word64 timeMs;
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};
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class VCMCodecTimer
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{
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public:
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VCMCodecTimer();
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// Updates and returns the max filtered decode time.
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WebRtc_Word32 StopTimer(WebRtc_Word64 startTimeMs, WebRtc_Word64 nowMs);
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// Empty the list of timers.
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void Reset();
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// Get the required decode time in ms.
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WebRtc_Word32 RequiredDecodeTimeMs(FrameType frameType) const;
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private:
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void UpdateMaxHistory(WebRtc_Word32 decodeTime, WebRtc_Word64 now);
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void MaxFilter(WebRtc_Word32 newTime, WebRtc_Word64 nowMs);
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void ProcessHistory(WebRtc_Word64 nowMs);
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WebRtc_Word32 _filteredMax;
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bool _firstDecodeTime;
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WebRtc_Word32 _shortMax;
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VCMShortMaxSample _history[MAX_HISTORY_SIZE];
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_VIDEO_CODING_CODEC_TIMER_H_
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