9cf037b831
R=mallinath@webrtc.org Review URL: https://webrtc-codereview.appspot.com/8139004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@5502 4adac7df-926f-26a2-2b94-8c16560cd09d
119 lines
4.5 KiB
C++
119 lines
4.5 KiB
C++
/*
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* libjingle
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* Copyright 2013, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "talk/app/webrtc/localaudiosource.h"
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#include <vector>
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#include "talk/media/base/mediaengine.h"
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#include "talk/app/webrtc/mediaconstraintsinterface.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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bool FromConstraints(const MediaConstraintsInterface::Constraints& constraints,
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cricket::AudioOptions* options) {
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bool success = true;
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MediaConstraintsInterface::Constraints::const_iterator iter;
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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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for (iter = constraints.begin(); iter != constraints.end(); ++iter) {
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bool value = false;
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if (!talk_base::FromString(iter->value, &value)) {
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success = false;
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continue;
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}
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if (iter->key == MediaConstraintsInterface::kEchoCancellation)
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options->echo_cancellation.Set(value);
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else if (iter->key ==
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MediaConstraintsInterface::kExperimentalEchoCancellation)
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options->experimental_aec.Set(value);
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else if (iter->key == MediaConstraintsInterface::kAutoGainControl)
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options->auto_gain_control.Set(value);
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else if (iter->key ==
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MediaConstraintsInterface::kExperimentalAutoGainControl)
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options->experimental_agc.Set(value);
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else if (iter->key == MediaConstraintsInterface::kNoiseSuppression)
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options->noise_suppression.Set(value);
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else if (iter->key ==
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MediaConstraintsInterface::kExperimentalNoiseSuppression)
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options->experimental_ns.Set(value);
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else if (iter->key == MediaConstraintsInterface::kHighpassFilter)
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options->highpass_filter.Set(value);
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else if (iter->key == MediaConstraintsInterface::kTypingNoiseDetection)
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options->typing_detection.Set(value);
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else if (iter->key == MediaConstraintsInterface::kAudioMirroring)
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options->stereo_swapping.Set(value);
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else
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success = false;
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}
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return success;
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}
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} // namespace
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talk_base::scoped_refptr<LocalAudioSource> LocalAudioSource::Create(
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const PeerConnectionFactoryInterface::Options& options,
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const MediaConstraintsInterface* constraints) {
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talk_base::scoped_refptr<LocalAudioSource> source(
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new talk_base::RefCountedObject<LocalAudioSource>());
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source->Initialize(options, constraints);
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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 audio_options;
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if (!FromConstraints(constraints->GetMandatory(), &audio_options)) {
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source_state_ = kEnded;
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return;
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}
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options_.SetAll(audio_options);
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source_state_ = kLive;
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}
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} // namespace webrtc
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