| Zeke Chin | d332580 | 2015-08-14 11:00:02 -0700 | [diff] [blame] | 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 |