/* * libjingle * Copyright 2013, Google Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "talk/app/webrtc/localaudiosource.h" #include #include "talk/media/base/mediaengine.h" #include "talk/app/webrtc/mediaconstraintsinterface.h" using webrtc::MediaConstraintsInterface; using webrtc::MediaSourceInterface; namespace webrtc { // Constraint keys. // They are declared as static members in mediaconstraintsinterface.h const char MediaConstraintsInterface::kEchoCancellation[] = "googEchoCancellation"; const char MediaConstraintsInterface::kExperimentalEchoCancellation[] = "googEchoCancellation2"; const char MediaConstraintsInterface::kAutoGainControl[] = "googAutoGainControl"; const char MediaConstraintsInterface::kExperimentalAutoGainControl[] = "googAutoGainControl2"; const char MediaConstraintsInterface::kNoiseSuppression[] = "googNoiseSuppression"; const char MediaConstraintsInterface::kHighpassFilter[] = "googHighpassFilter"; const char MediaConstraintsInterface::kTypingNoiseDetection[] = "googTypingNoiseDetection"; const char MediaConstraintsInterface::kAudioMirroring[] = "googAudioMirroring"; // TODO(perkj): Remove kInternalAecDump once its not used by Chrome. const char MediaConstraintsInterface::kInternalAecDump[] = "deprecatedAecDump"; namespace { // Convert constraints to audio options. Return false if constraints are // invalid. bool FromConstraints(const MediaConstraintsInterface::Constraints& constraints, cricket::AudioOptions* options) { bool success = true; MediaConstraintsInterface::Constraints::const_iterator iter; // This design relies on the fact that all the audio constraints are actually // "options", i.e. boolean-valued and always satisfiable. If the constraints // are extended to include non-boolean values or actual format constraints, // a different algorithm will be required. for (iter = constraints.begin(); iter != constraints.end(); ++iter) { bool value = false; if (!talk_base::FromString(iter->value, &value)) { success = false; continue; } if (iter->key == MediaConstraintsInterface::kEchoCancellation) options->echo_cancellation.Set(value); else if (iter->key == MediaConstraintsInterface::kExperimentalEchoCancellation) options->experimental_aec.Set(value); else if (iter->key == MediaConstraintsInterface::kAutoGainControl) options->auto_gain_control.Set(value); else if (iter->key == MediaConstraintsInterface::kExperimentalAutoGainControl) options->experimental_agc.Set(value); else if (iter->key == MediaConstraintsInterface::kNoiseSuppression) options->noise_suppression.Set(value); else if (iter->key == MediaConstraintsInterface::kHighpassFilter) options->highpass_filter.Set(value); else if (iter->key == MediaConstraintsInterface::kTypingNoiseDetection) options->typing_detection.Set(value); else if (iter->key == MediaConstraintsInterface::kAudioMirroring) options->stereo_swapping.Set(value); else success = false; } return success; } } // namespace talk_base::scoped_refptr LocalAudioSource::Create( const PeerConnectionFactoryInterface::Options& options, const MediaConstraintsInterface* constraints) { talk_base::scoped_refptr source( new talk_base::RefCountedObject()); source->Initialize(options, constraints); return source; } void LocalAudioSource::Initialize( const PeerConnectionFactoryInterface::Options& options, const MediaConstraintsInterface* constraints) { if (!constraints) return; // Apply optional constraints first, they will be overwritten by mandatory // constraints. FromConstraints(constraints->GetOptional(), &options_); cricket::AudioOptions audio_options; if (!FromConstraints(constraints->GetMandatory(), &audio_options)) { source_state_ = kEnded; return; } options_.SetAll(audio_options); if (options.enable_aec_dump) options_.aec_dump.Set(true); source_state_ = kLive; } } // namespace webrtc