bitrate.h revision c38eef896a483c5d4a2975d76060c9942031a94a 
1/*
2 *  Copyright (c) 2012 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#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_BITRATE_H_
12#define WEBRTC_MODULES_RTP_RTCP_SOURCE_BITRATE_H_
13
14#include <stdio.h>
15#include <list>
16
17#include "webrtc/common_types.h"
18#include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h"
19#include "webrtc/typedefs.h"
20
21namespace webrtc {
22
23class RtpRtcpClock;
24
25class Bitrate {
26 public:
27  explicit Bitrate(RtpRtcpClock* clock);
28
29  // Calculates rates.
30  void Process();
31
32  // Update with a packet.
33  void Update(const WebRtc_Word32 bytes);
34
35  // Packet rate last second, updated roughly every 100 ms.
36  WebRtc_UWord32 PacketRate() const;
37
38  // Bitrate last second, updated roughly every 100 ms.
39  WebRtc_UWord32 BitrateLast() const;
40
41  // Bitrate last second, updated now.
42  WebRtc_UWord32 BitrateNow() const;
43
44 protected:
45  RtpRtcpClock& clock_;
46
47 private:
48  WebRtc_UWord32 packet_rate_;
49  WebRtc_UWord32 bitrate_;
50  WebRtc_UWord8 bitrate_next_idx_;
51  WebRtc_Word64 packet_rate_array_[10];
52  WebRtc_Word64 bitrate_array_[10];
53  WebRtc_Word64 bitrate_diff_ms_[10];
54  WebRtc_Word64 time_last_rate_update_;
55  WebRtc_UWord32 bytes_count_;
56  WebRtc_UWord32 packet_count_;
57};
58
59}  // namespace webrtc
60
61#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_BITRATE_H_
62