39b31001d2
This is the second cl in WebRTC for this change and will be landed after Chromium has been updated to use kGooglEchoCancellation where that variant is required. See also the first part: https://codereview.webrtc.org/1179233003 BUG=webrtc:4747 R=andrew@webrtc.org Review URL: https://codereview.webrtc.org/1185963003 Cr-Commit-Position: refs/heads/master@{#9490}
168 lines
7.5 KiB
C++
168 lines
7.5 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/mediaconstraintsinterface.h"
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#include "webrtc/base/stringencode.h"
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namespace webrtc {
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const char MediaConstraintsInterface::kValueTrue[] = "true";
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const char MediaConstraintsInterface::kValueFalse[] = "false";
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// Constraints declared as static members in mediastreaminterface.h
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// Specified by draft-alvestrand-constraints-resolution-00b
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const char MediaConstraintsInterface::kMinAspectRatio[] = "minAspectRatio";
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const char MediaConstraintsInterface::kMaxAspectRatio[] = "maxAspectRatio";
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const char MediaConstraintsInterface::kMaxWidth[] = "maxWidth";
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const char MediaConstraintsInterface::kMinWidth[] = "minWidth";
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const char MediaConstraintsInterface::kMaxHeight[] = "maxHeight";
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const char MediaConstraintsInterface::kMinHeight[] = "minHeight";
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const char MediaConstraintsInterface::kMaxFrameRate[] = "maxFrameRate";
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const char MediaConstraintsInterface::kMinFrameRate[] = "minFrameRate";
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// Audio constraints.
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const char MediaConstraintsInterface::kEchoCancellation[] =
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"echoCancellation";
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const char MediaConstraintsInterface::kGoogEchoCancellation[] =
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"googEchoCancellation";
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const char MediaConstraintsInterface::kExtendedFilterEchoCancellation[] =
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"googEchoCancellation2";
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const char MediaConstraintsInterface::kDAEchoCancellation[] =
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"googDAEchoCancellation";
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const char MediaConstraintsInterface::kAutoGainControl[] =
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"googAutoGainControl";
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const char MediaConstraintsInterface::kExperimentalAutoGainControl[] =
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"googAutoGainControl2";
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const char MediaConstraintsInterface::kNoiseSuppression[] =
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"googNoiseSuppression";
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const char MediaConstraintsInterface::kExperimentalNoiseSuppression[] =
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"googNoiseSuppression2";
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const char MediaConstraintsInterface::kHighpassFilter[] =
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"googHighpassFilter";
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const char MediaConstraintsInterface::kTypingNoiseDetection[] =
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"googTypingNoiseDetection";
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const char MediaConstraintsInterface::kAudioMirroring[] = "googAudioMirroring";
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const char MediaConstraintsInterface::kAecDump[] = "audioDebugRecording";
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// Google-specific constraint keys for a local video source (getUserMedia).
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const char MediaConstraintsInterface::kNoiseReduction[] = "googNoiseReduction";
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// Constraint keys for CreateOffer / CreateAnswer defined in W3C specification.
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const char MediaConstraintsInterface::kOfferToReceiveAudio[] =
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"OfferToReceiveAudio";
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const char MediaConstraintsInterface::kOfferToReceiveVideo[] =
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"OfferToReceiveVideo";
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const char MediaConstraintsInterface::kVoiceActivityDetection[] =
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"VoiceActivityDetection";
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const char MediaConstraintsInterface::kIceRestart[] =
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"IceRestart";
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// Google specific constraint for BUNDLE enable/disable.
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const char MediaConstraintsInterface::kUseRtpMux[] =
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"googUseRtpMUX";
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// Below constraints should be used during PeerConnection construction.
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const char MediaConstraintsInterface::kEnableDtlsSrtp[] =
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"DtlsSrtpKeyAgreement";
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const char MediaConstraintsInterface::kEnableRtpDataChannels[] =
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"RtpDataChannels";
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// Google-specific constraint keys.
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const char MediaConstraintsInterface::kEnableDscp[] = "googDscp";
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const char MediaConstraintsInterface::kEnableIPv6[] = "googIPv6";
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const char MediaConstraintsInterface::kEnableVideoSuspendBelowMinBitrate[] =
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"googSuspendBelowMinBitrate";
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const char MediaConstraintsInterface::kNumUnsignalledRecvStreams[] =
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"googNumUnsignalledRecvStreams";
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const char MediaConstraintsInterface::kCombinedAudioVideoBwe[] =
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"googCombinedAudioVideoBwe";
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const char MediaConstraintsInterface::kScreencastMinBitrate[] =
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"googScreencastMinBitrate";
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// TODO(ronghuawu): Remove once cpu overuse detection is stable.
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const char MediaConstraintsInterface::kCpuOveruseDetection[] =
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"googCpuOveruseDetection";
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const char MediaConstraintsInterface::kCpuUnderuseThreshold[] =
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"googCpuUnderuseThreshold";
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const char MediaConstraintsInterface::kCpuOveruseThreshold[] =
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"googCpuOveruseThreshold";
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const char MediaConstraintsInterface::kCpuUnderuseEncodeRsdThreshold[] =
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"googCpuUnderuseEncodeRsdThreshold";
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const char MediaConstraintsInterface::kCpuOveruseEncodeRsdThreshold[] =
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"googCpuOveruseEncodeRsdThreshold";
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const char MediaConstraintsInterface::kCpuOveruseEncodeUsage[] =
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"googCpuOveruseEncodeUsage";
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const char MediaConstraintsInterface::kHighStartBitrate[] =
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"googHighStartBitrate";
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const char MediaConstraintsInterface::kHighBitrate[] =
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"googHighBitrate";
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const char MediaConstraintsInterface::kVeryHighBitrate[] =
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"googVeryHighBitrate";
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const char MediaConstraintsInterface::kPayloadPadding[] = "googPayloadPadding";
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// Set |value| to the value associated with the first appearance of |key|, or
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// return false if |key| is not found.
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bool MediaConstraintsInterface::Constraints::FindFirst(
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const std::string& key, std::string* value) const {
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for (Constraints::const_iterator iter = begin(); iter != end(); ++iter) {
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if (iter->key == key) {
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*value = iter->value;
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return true;
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}
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}
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return false;
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}
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// Find the highest-priority instance of the boolean-valued constraint) named by
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// |key| and return its value as |value|. |constraints| can be null.
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// If |mandatory_constraints| is non-null, it is incremented if the key appears
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// among the mandatory constraints.
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// Returns true if the key was found and has a valid boolean value.
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// If the key appears multiple times as an optional constraint, appearances
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// after the first are ignored.
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// Note: Because this uses FindFirst, repeated optional constraints whose
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// first instance has an unrecognized value are not handled precisely in
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// accordance with the specification.
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bool FindConstraint(const MediaConstraintsInterface* constraints,
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const std::string& key, bool* value,
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size_t* mandatory_constraints) {
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std::string string_value;
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if (!constraints) {
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return false;
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}
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if (constraints->GetMandatory().FindFirst(key, &string_value)) {
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if (mandatory_constraints)
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++*mandatory_constraints;
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return rtc::FromString(string_value, value);
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}
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if (constraints->GetOptional().FindFirst(key, &string_value)) {
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return rtc::FromString(string_value, value);
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}
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return false;
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}
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} // namespace webrtc
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