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Side by Side Diff: webrtc/modules/pacing/bitrate_prober.h

Issue 2243823002: Added ProbeBitrate(bitrate_bps, num_probes) to BitrateProber. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: ... in header file. Created 4 years, 4 months ago
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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
11 #ifndef WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ 11 #ifndef WEBRTC_MODULES_PACING_BITRATE_PROBER_H_
12 #define WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ 12 #define WEBRTC_MODULES_PACING_BITRATE_PROBER_H_
13 13
14 #include <cstddef>
15 #include <list>
16 #include <queue> 14 #include <queue>
17 15
16 #include "webrtc/base/basictypes.h"
18 #include "webrtc/typedefs.h" 17 #include "webrtc/typedefs.h"
19 18
20 namespace webrtc { 19 namespace webrtc {
21 20
22 // Note that this class isn't thread-safe by itself and therefore relies 21 // Note that this class isn't thread-safe by itself and therefore relies
23 // on being protected by the caller. 22 // on being protected by the caller.
24 class BitrateProber { 23 class BitrateProber {
25 public: 24 public:
26 BitrateProber(); 25 BitrateProber();
27 26
28 void SetEnabled(bool enable); 27 void SetEnabled(bool enable);
29 28
30 // Returns true if the prober is in a probing session, i.e., it currently 29 // Returns true if the prober is in a probing session, i.e., it currently
31 // wants packets to be sent out according to the time returned by 30 // wants packets to be sent out according to the time returned by
32 // TimeUntilNextProbe(). 31 // TimeUntilNextProbe().
33 bool IsProbing() const; 32 bool IsProbing() const;
34 33
35 // 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
36 // 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
37 // with. 36 // with.
38 void OnIncomingPacket(uint32_t bitrate_bps, 37 void OnIncomingPacket(size_t packet_size);
39 size_t packet_size, 38
40 int64_t now_ms); 39 // Create a cluster used to probe for |bitrate_bps| with |num_packets| number
40 // of packets.
41 void ProbeAtBitrate(uint32_t bitrate_bps, int num_packets);
41 42
42 // Returns the number of milliseconds until the next packet should be sent to 43 // Returns the number of milliseconds until the next packet should be sent to
43 // get accurate probing. 44 // get accurate probing.
44 int TimeUntilNextProbe(int64_t now_ms); 45 int TimeUntilNextProbe(int64_t now_ms);
45 46
46 // Which cluster that is currently being used for probing. 47 // Which cluster that is currently being used for probing.
47 int CurrentClusterId() const; 48 int CurrentClusterId() const;
48 49
49 // Returns the number of bytes that the prober recommends for the next probe 50 // Returns the number of bytes that the prober recommends for the next probe
50 // packet. 51 // packet.
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83 // the previous probe packet based on the size and time when that packet was 84 // the previous probe packet based on the size and time when that packet was
84 // sent. 85 // sent.
85 std::queue<ProbeCluster> clusters_; 86 std::queue<ProbeCluster> clusters_;
86 size_t packet_size_last_sent_; 87 size_t packet_size_last_sent_;
87 // The last time a probe was sent. 88 // The last time a probe was sent.
88 int64_t time_last_probe_sent_ms_; 89 int64_t time_last_probe_sent_ms_;
89 int next_cluster_id_; 90 int next_cluster_id_;
90 }; 91 };
91 } // namespace webrtc 92 } // namespace webrtc
92 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_ 93 #endif // WEBRTC_MODULES_PACING_BITRATE_PROBER_H_
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