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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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31 // TimeUntilNextProbe(). | 31 // TimeUntilNextProbe(). |
32 bool IsProbing() const; | 32 bool IsProbing() const; |
33 | 33 |
34 // Initializes a new probing session if the prober is allowed to probe. Does | 34 // Initializes a new probing session if the prober is allowed to probe. Does |
35 // not initialize the prober unless the packet size is large enough to probe | 35 // not initialize the prober unless the packet size is large enough to probe |
36 // with. | 36 // with. |
37 void OnIncomingPacket(size_t packet_size); | 37 void OnIncomingPacket(size_t packet_size); |
38 | 38 |
39 // Create a cluster used to probe for |bitrate_bps| with |num_probes| number | 39 // Create a cluster used to probe for |bitrate_bps| with |num_probes| number |
40 // of probes. | 40 // of probes. |
41 void CreateProbeCluster(int bitrate_bps); | 41 void CreateProbeCluster(int bitrate_bps, int64_t now_ms); |
42 | 42 |
43 // Returns the number of milliseconds until the next probe should be sent to | 43 // Returns the number of milliseconds until the next probe should be sent to |
44 // get accurate probing. | 44 // get accurate probing. |
45 int TimeUntilNextProbe(int64_t now_ms); | 45 int TimeUntilNextProbe(int64_t now_ms); |
46 | 46 |
47 // Which cluster that is currently being used for probing. | 47 // Which cluster that is currently being used for probing. |
48 int CurrentClusterId() const; | 48 int CurrentClusterId() const; |
49 | 49 |
50 // Returns the minimum number of bytes that the prober recommends for | 50 // Returns the minimum number of bytes that the prober recommends for |
51 // the next probe. | 51 // the next probe. |
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74 // A probe cluster consists of a set of probes. Each probe in turn can be | 74 // A probe cluster consists of a set of probes. Each probe in turn can be |
75 // divided into a number of packets to accommodate the MTU on the network. | 75 // divided into a number of packets to accommodate the MTU on the network. |
76 struct ProbeCluster { | 76 struct ProbeCluster { |
77 int min_probes = 0; | 77 int min_probes = 0; |
78 int min_bytes = 0; | 78 int min_bytes = 0; |
79 int bitrate_bps = 0; | 79 int bitrate_bps = 0; |
80 int id = -1; | 80 int id = -1; |
81 | 81 |
82 int sent_probes = 0; | 82 int sent_probes = 0; |
83 int sent_bytes = 0; | 83 int sent_bytes = 0; |
| 84 int64_t time_created_ms = -1; |
84 int64_t time_started_ms = -1; | 85 int64_t time_started_ms = -1; |
85 | 86 |
86 int retries = 0; | 87 int retries = 0; |
87 }; | 88 }; |
88 | 89 |
89 // Resets the state of the prober and clears any cluster/timing data tracked. | 90 // Resets the state of the prober and clears any cluster/timing data tracked. |
90 void ResetState(); | 91 void ResetState(int64_t now_ms); |
91 | 92 |
92 int64_t GetNextProbeTime(const ProbeCluster& cluster); | 93 int64_t GetNextProbeTime(const ProbeCluster& cluster); |
93 | 94 |
94 ProbingState probing_state_; | 95 ProbingState probing_state_; |
95 | 96 |
96 // Probe bitrate per packet. These are used to compute the delta relative to | 97 // Probe bitrate per packet. These are used to compute the delta relative to |
97 // the previous probe packet based on the size and time when that packet was | 98 // the previous probe packet based on the size and time when that packet was |
98 // sent. | 99 // sent. |
99 std::queue<ProbeCluster> clusters_; | 100 std::queue<ProbeCluster> clusters_; |
100 | 101 |
101 // Time the next probe should be sent when in kActive state. | 102 // Time the next probe should be sent when in kActive state. |
102 int64_t next_probe_time_ms_; | 103 int64_t next_probe_time_ms_; |
103 | 104 |
104 int next_cluster_id_; | 105 int next_cluster_id_; |
105 }; | 106 }; |
106 | 107 |
107 } // namespace webrtc | 108 } // namespace webrtc |
108 | 109 |
109 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ | 110 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ |
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