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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, int num_probes); | 41 void CreateProbeCluster(int bitrate_bps); |
| 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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| 67 // probes are being sent. | 67 // probes are being sent. |
| 68 kActive, | 68 kActive, |
| 69 // Probing is enabled, but currently suspended until an explicit trigger | 69 // Probing is enabled, but currently suspended until an explicit trigger |
| 70 // to start probing again. | 70 // to start probing again. |
| 71 kSuspended, | 71 kSuspended, |
| 72 }; | 72 }; |
| 73 | 73 |
| 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 accomodate the MTU on the network. | 75 // divided into a number of packets to accomodate the MTU on the network. |
| 76 struct ProbeCluster { | 76 struct ProbeCluster { |
| 77 int max_probes = 0; | 77 int min_probes = 0; |
| 78 int sent_probes = 0; | 78 int sent_probes = 0; |
| 79 int probe_bitrate_bps = 0; | 79 int min_bytes = 0; |
| 80 int sent_bytes = 0; |
| 81 int bitrate_bps = 0; |
| 80 int id = -1; | 82 int id = -1; |
| 81 }; | 83 }; |
| 82 | 84 |
| 83 // Resets the state of the prober and clears any cluster/timing data tracked. | 85 // Resets the state of the prober and clears any cluster/timing data tracked. |
| 84 void ResetState(); | 86 void ResetState(); |
| 85 | 87 |
| 86 ProbingState probing_state_; | 88 ProbingState probing_state_; |
| 87 // Probe bitrate per packet. These are used to compute the delta relative to | 89 // Probe bitrate per packet. These are used to compute the delta relative to |
| 88 // the previous probe packet based on the size and time when that packet was | 90 // the previous probe packet based on the size and time when that packet was |
| 89 // sent. | 91 // sent. |
| 90 std::queue<ProbeCluster> clusters_; | 92 std::queue<ProbeCluster> clusters_; |
| 91 // A probe can include one or more packets. | 93 // A probe can include one or more packets. |
| 92 size_t probe_size_last_sent_; | 94 size_t probe_size_last_sent_; |
| 93 // The last time a probe was sent. | 95 // The last time a probe was sent. |
| 94 int64_t time_last_probe_sent_ms_; | 96 int64_t time_last_probe_sent_ms_; |
| 95 int next_cluster_id_; | 97 int next_cluster_id_; |
| 96 }; | 98 }; |
| 97 } // namespace webrtc | 99 } // namespace webrtc |
| 98 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ | 100 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ |
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