327d8babc8
On Android, we would like to use MediaCodec output buffers to hold decoded frames until they can be rendered to a texture. There can only be one texture buffer used at the same time and therefore the calculated decode time in VCMTiming will be wrong since that calculation will also include the time where the decoder waited for the upper layers (that depend on network jitter and actual render time) to release the frame. This new method will be used in https://codereview.webrtc.org/1422963003/ BUG=webrtc:4993 R=stefan@webrtc.org TBR=mflodman@webrtc.org Review URL: https://codereview.webrtc.org/1414693006 . Cr-Commit-Position: refs/heads/master@{#10576}
62 lines
1.6 KiB
C++
62 lines
1.6 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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#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 "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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{
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// MAX_HISTORY_SIZE * SHORT_FILTER_MS defines the window size in milliseconds
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#define MAX_HISTORY_SIZE 10
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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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int32_t shortMax;
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int64_t 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 the max filtered decode time.
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void MaxFilter(int32_t newDecodeTimeMs, int64_t 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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int32_t RequiredDecodeTimeMs(FrameType frameType) const;
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private:
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void UpdateMaxHistory(int32_t decodeTime, int64_t now);
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void ProcessHistory(int64_t nowMs);
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int32_t _filteredMax;
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// The number of samples ignored so far.
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int32_t _ignoredSampleCount;
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int32_t _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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