blob: 3de81e72e031a9edd557c9201495d3dca6ffacba (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/*
* Copyright 2020 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "video/adaptation/balanced_constraint.h"
#include <string>
#include <utility>
#include "api/sequence_checker.h"
#include "rtc_base/task_utils/to_queued_task.h"
namespace webrtc {
BalancedConstraint::BalancedConstraint(
DegradationPreferenceProvider* degradation_preference_provider)
: encoder_target_bitrate_bps_(absl::nullopt),
degradation_preference_provider_(degradation_preference_provider) {
RTC_DCHECK(degradation_preference_provider_);
sequence_checker_.Detach();
}
void BalancedConstraint::OnEncoderTargetBitrateUpdated(
absl::optional<uint32_t> encoder_target_bitrate_bps) {
RTC_DCHECK_RUN_ON(&sequence_checker_);
encoder_target_bitrate_bps_ = std::move(encoder_target_bitrate_bps);
}
bool BalancedConstraint::IsAdaptationUpAllowed(
const VideoStreamInputState& input_state,
const VideoSourceRestrictions& restrictions_before,
const VideoSourceRestrictions& restrictions_after) const {
RTC_DCHECK_RUN_ON(&sequence_checker_);
// Don't adapt if BalancedDegradationSettings applies and determines this will
// exceed bitrate constraints.
if (degradation_preference_provider_->degradation_preference() ==
DegradationPreference::BALANCED) {
if (!balanced_settings_.CanAdaptUp(
input_state.video_codec_type(),
input_state.frame_size_pixels().value(),
encoder_target_bitrate_bps_.value_or(0))) {
return false;
}
if (DidIncreaseResolution(restrictions_before, restrictions_after) &&
!balanced_settings_.CanAdaptUpResolution(
input_state.video_codec_type(),
input_state.frame_size_pixels().value(),
encoder_target_bitrate_bps_.value_or(0))) {
return false;
}
}
return true;
}
} // namespace webrtc
|
