115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/*
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* Copyright 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/api/localaudiosource.h"
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#include <vector>
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#include "webrtc/api/mediaconstraintsinterface.h"
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#include "webrtc/media/base/mediaengine.h"
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using webrtc::MediaConstraintsInterface;
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using webrtc::MediaSourceInterface;
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namespace webrtc {
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namespace {
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// Convert constraints to audio options. Return false if constraints are
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// invalid.
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void FromConstraints(const MediaConstraintsInterface::Constraints& constraints,
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cricket::AudioOptions* options) {
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// This design relies on the fact that all the audio constraints are actually
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// "options", i.e. boolean-valued and always satisfiable. If the constraints
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// are extended to include non-boolean values or actual format constraints,
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// a different algorithm will be required.
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struct {
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const char* name;
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rtc::Optional<bool>& value;
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} key_to_value[] = {
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{MediaConstraintsInterface::kGoogEchoCancellation,
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options->echo_cancellation},
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{MediaConstraintsInterface::kExtendedFilterEchoCancellation,
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options->extended_filter_aec},
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{MediaConstraintsInterface::kDAEchoCancellation,
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options->delay_agnostic_aec},
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{MediaConstraintsInterface::kAutoGainControl, options->auto_gain_control},
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{MediaConstraintsInterface::kExperimentalAutoGainControl,
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options->experimental_agc},
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{MediaConstraintsInterface::kNoiseSuppression,
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options->noise_suppression},
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{MediaConstraintsInterface::kExperimentalNoiseSuppression,
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options->experimental_ns},
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{MediaConstraintsInterface::kIntelligibilityEnhancer,
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options->intelligibility_enhancer},
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{MediaConstraintsInterface::kHighpassFilter, options->highpass_filter},
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{MediaConstraintsInterface::kTypingNoiseDetection,
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options->typing_detection},
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{MediaConstraintsInterface::kAudioMirroring, options->stereo_swapping}
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};
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for (const auto& constraint : constraints) {
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bool value = false;
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if (!rtc::FromString(constraint.value, &value))
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continue;
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for (auto& entry : key_to_value) {
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if (constraint.key.compare(entry.name) == 0)
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entry.value = rtc::Optional<bool>(value);
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}
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}
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}
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} // namespace
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rtc::scoped_refptr<LocalAudioSource> LocalAudioSource::Create(
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const PeerConnectionFactoryInterface::Options& options,
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const MediaConstraintsInterface* constraints) {
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rtc::scoped_refptr<LocalAudioSource> source(
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new rtc::RefCountedObject<LocalAudioSource>());
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source->Initialize(options, constraints);
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return source;
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}
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rtc::scoped_refptr<LocalAudioSource> LocalAudioSource::Create(
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const PeerConnectionFactoryInterface::Options& options,
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const cricket::AudioOptions* audio_options) {
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rtc::scoped_refptr<LocalAudioSource> source(
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new rtc::RefCountedObject<LocalAudioSource>());
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source->Initialize(options, audio_options);
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return source;
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}
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void LocalAudioSource::Initialize(
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const PeerConnectionFactoryInterface::Options& options,
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const MediaConstraintsInterface* constraints) {
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if (!constraints)
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return;
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// Apply optional constraints first, they will be overwritten by mandatory
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// constraints.
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FromConstraints(constraints->GetOptional(), &options_);
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cricket::AudioOptions mandatory_options;
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FromConstraints(constraints->GetMandatory(), &mandatory_options);
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options_.SetAll(mandatory_options);
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}
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void LocalAudioSource::Initialize(
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const PeerConnectionFactoryInterface::Options& options,
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const cricket::AudioOptions* audio_options) {
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if (!audio_options)
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return;
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options_ = *audio_options;
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}
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} // namespace webrtc
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