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1 /* | |
2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #import <Foundation/Foundation.h> | |
12 | |
13 /** Class used to estimate bitrate based on byte count. It is expected that | |
14 * byte count is monotonocially increasing. This class tracks the times that | |
15 * byte count is updated, and measures the bitrate based on the byte difference | |
16 * over the interval between updates. | |
17 */ | |
18 @interface ARDBitrateTracker : NSObject | |
19 | |
20 /** The bitrate in bits per second. */ | |
21 @property(nonatomic, readonly) double bitrate; | |
22 /** The bitrate as a formatted string in bps, Kbps or Mbps. */ | |
23 @property(nonatomic, readonly) NSString *bitrateString; | |
24 | |
25 /** Converts the bitrate to a readable format in bps, Kbps or Mbps. */ | |
26 + (NSString *)bitrateStringForBitrate:(double)bitrate; | |
27 /** Updates the tracked bitrate with the new byte count. */ | |
28 - (void)updateBitrateWithCurrentByteCount:(NSInteger)byteCount; | |
29 | |
30 @end | |
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