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28 #include "talk/app/webrtc/localaudiosource.h"
32 #include "talk/app/webrtc/mediaconstraintsinterface.h"
33 #include "talk/media/base/mediaengine.h"
35 using webrtc::MediaConstraintsInterface;
36 using webrtc::MediaSourceInterface;
42 // Convert constraints to audio options. Return false if constraints are
44 void FromConstraints(const MediaConstraintsInterface::Constraints& constraints,
45 cricket::AudioOptions* options) {
46 MediaConstraintsInterface::Constraints::const_iterator iter;
48 // This design relies on the fact that all the audio constraints are actually
49 // "options", i.e. boolean-valued and always satisfiable. If the constraints
50 // are extended to include non-boolean values or actual format constraints,
51 // a different algorithm will be required.
52 for (iter = constraints.begin(); iter != constraints.end(); ++iter) {
55 if (!rtc::FromString(iter->value, &value))
58 if (iter->key == MediaConstraintsInterface::kEchoCancellation)
59 options->echo_cancellation.Set(value);
61 MediaConstraintsInterface::kExperimentalEchoCancellation)
62 options->experimental_aec.Set(value);
63 else if (iter->key == MediaConstraintsInterface::kAutoGainControl)
64 options->auto_gain_control.Set(value);
66 MediaConstraintsInterface::kExperimentalAutoGainControl)
67 options->experimental_agc.Set(value);
68 else if (iter->key == MediaConstraintsInterface::kNoiseSuppression)
69 options->noise_suppression.Set(value);
71 MediaConstraintsInterface::kExperimentalNoiseSuppression)
72 options->experimental_ns.Set(value);
73 else if (iter->key == MediaConstraintsInterface::kHighpassFilter)
74 options->highpass_filter.Set(value);
75 else if (iter->key == MediaConstraintsInterface::kTypingNoiseDetection)
76 options->typing_detection.Set(value);
77 else if (iter->key == MediaConstraintsInterface::kAudioMirroring)
78 options->stereo_swapping.Set(value);
84 rtc::scoped_refptr<LocalAudioSource> LocalAudioSource::Create(
85 const PeerConnectionFactoryInterface::Options& options,
86 const MediaConstraintsInterface* constraints) {
87 rtc::scoped_refptr<LocalAudioSource> source(
88 new rtc::RefCountedObject<LocalAudioSource>());
89 source->Initialize(options, constraints);
93 void LocalAudioSource::Initialize(
94 const PeerConnectionFactoryInterface::Options& options,
95 const MediaConstraintsInterface* constraints) {
99 // Apply optional constraints first, they will be overwritten by mandatory
101 FromConstraints(constraints->GetOptional(), &options_);
103 cricket::AudioOptions mandatory_options;
104 FromConstraints(constraints->GetMandatory(), &mandatory_options);
105 options_.SetAll(mandatory_options);
106 source_state_ = kLive;
109 } // namespace webrtc