OLD | NEW |
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 #include "webrtc/modules/pacing/bitrate_prober.h" | 11 #include "webrtc/modules/pacing/bitrate_prober.h" |
12 | 12 |
13 #include <algorithm> | 13 #include <algorithm> |
14 | 14 |
15 #include "webrtc/base/checks.h" | 15 #include "webrtc/base/checks.h" |
16 #include "webrtc/base/logging.h" | 16 #include "webrtc/base/logging.h" |
17 #include "webrtc/modules/pacing/paced_sender.h" | 17 #include "webrtc/modules/pacing/paced_sender.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 namespace { | 21 namespace { |
22 | 22 |
23 // Inactivity threshold above which probing is restarted. | 23 // Inactivity threshold above which probing is restarted. |
24 constexpr int kInactivityThresholdMs = 5000; | 24 constexpr int kInactivityThresholdMs = 5000; |
25 | 25 |
26 // A minimum interval between probes to allow scheduling to be feasible. | 26 // A minimum interval between probes to allow scheduling to be feasible. |
27 constexpr int kMinProbeDeltaMs = 1; | 27 constexpr int kMinProbeDeltaMs = 1; |
28 | 28 |
29 int ComputeDeltaFromBitrate(size_t probe_size, uint32_t bitrate_bps) { | 29 int ComputeDeltaFromBitrate(size_t probe_size, uint32_t bitrate_bps) { |
30 RTC_CHECK_GT(bitrate_bps, 0u); | 30 RTC_CHECK_GT(bitrate_bps, 0); |
31 // Compute the time delta needed to send probe_size bytes at bitrate_bps | 31 // Compute the time delta needed to send probe_size bytes at bitrate_bps |
32 // bps. Result is in milliseconds. | 32 // bps. Result is in milliseconds. |
33 return static_cast<int>((1000ll * probe_size * 8) / bitrate_bps); | 33 return static_cast<int>((1000ll * probe_size * 8) / bitrate_bps); |
34 } | 34 } |
35 } // namespace | 35 } // namespace |
36 | 36 |
37 BitrateProber::BitrateProber() | 37 BitrateProber::BitrateProber() |
38 : probing_state_(ProbingState::kDisabled), | 38 : probing_state_(ProbingState::kDisabled), |
39 probe_size_last_sent_(0), | 39 probe_size_last_sent_(0), |
40 time_last_probe_sent_ms_(-1), | 40 time_last_probe_sent_ms_(-1), |
(...skipping 105 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
146 // a minimum of twice |kMinProbeDeltaMs| interval to allow scheduling to be | 146 // a minimum of twice |kMinProbeDeltaMs| interval to allow scheduling to be |
147 // feasible. | 147 // feasible. |
148 size_t BitrateProber::RecommendedMinProbeSize() const { | 148 size_t BitrateProber::RecommendedMinProbeSize() const { |
149 RTC_DCHECK(!clusters_.empty()); | 149 RTC_DCHECK(!clusters_.empty()); |
150 return clusters_.front().probe_bitrate_bps * 2 * kMinProbeDeltaMs / | 150 return clusters_.front().probe_bitrate_bps * 2 * kMinProbeDeltaMs / |
151 (8 * 1000); | 151 (8 * 1000); |
152 } | 152 } |
153 | 153 |
154 void BitrateProber::ProbeSent(int64_t now_ms, size_t bytes) { | 154 void BitrateProber::ProbeSent(int64_t now_ms, size_t bytes) { |
155 RTC_DCHECK(probing_state_ == ProbingState::kActive); | 155 RTC_DCHECK(probing_state_ == ProbingState::kActive); |
156 RTC_DCHECK_GT(bytes, 0u); | 156 RTC_DCHECK_GT(bytes, 0); |
157 probe_size_last_sent_ = bytes; | 157 probe_size_last_sent_ = bytes; |
158 time_last_probe_sent_ms_ = now_ms; | 158 time_last_probe_sent_ms_ = now_ms; |
159 if (!clusters_.empty()) { | 159 if (!clusters_.empty()) { |
160 ProbeCluster* cluster = &clusters_.front(); | 160 ProbeCluster* cluster = &clusters_.front(); |
161 ++cluster->sent_probes; | 161 ++cluster->sent_probes; |
162 if (cluster->sent_probes == cluster->max_probes) | 162 if (cluster->sent_probes == cluster->max_probes) |
163 clusters_.pop(); | 163 clusters_.pop(); |
164 if (clusters_.empty()) | 164 if (clusters_.empty()) |
165 probing_state_ = ProbingState::kSuspended; | 165 probing_state_ = ProbingState::kSuspended; |
166 } | 166 } |
167 } | 167 } |
168 } // namespace webrtc | 168 } // namespace webrtc |
OLD | NEW |