d33258098b
BUG= R=jiayl@webrtc.org Review URL: https://codereview.webrtc.org/1289623005 . Cr-Commit-Position: refs/heads/master@{#9714}
31 lines
1.2 KiB
Objective-C
31 lines
1.2 KiB
Objective-C
/*
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* Copyright 2015 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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#import <Foundation/Foundation.h>
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/** Class used to estimate bitrate based on byte count. It is expected that
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* byte count is monotonocially increasing. This class tracks the times that
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* byte count is updated, and measures the bitrate based on the byte difference
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* over the interval between updates.
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*/
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@interface ARDBitrateTracker : NSObject
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/** The bitrate in bits per second. */
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@property(nonatomic, readonly) double bitrate;
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/** The bitrate as a formatted string in bps, Kbps or Mbps. */
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@property(nonatomic, readonly) NSString *bitrateString;
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/** Converts the bitrate to a readable format in bps, Kbps or Mbps. */
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+ (NSString *)bitrateStringForBitrate:(double)bitrate;
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/** Updates the tracked bitrate with the new byte count. */
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- (void)updateBitrateWithCurrentByteCount:(NSInteger)byteCount;
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@end
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