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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2013 Google Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 * this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 * this list of conditions and the following disclaimer in the documentation | |
| 12 * and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
| 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #include "talk/app/webrtc/mediaconstraintsinterface.h" | |
| 29 | |
| 30 #include "webrtc/base/stringencode.h" | |
| 31 | |
| 32 namespace webrtc { | |
| 33 | |
| 34 const char MediaConstraintsInterface::kValueTrue[] = "true"; | |
| 35 const char MediaConstraintsInterface::kValueFalse[] = "false"; | |
| 36 | |
| 37 // Constraints declared as static members in mediastreaminterface.h | |
| 38 // Specified by draft-alvestrand-constraints-resolution-00b | |
| 39 const char MediaConstraintsInterface::kMinAspectRatio[] = "minAspectRatio"; | |
| 40 const char MediaConstraintsInterface::kMaxAspectRatio[] = "maxAspectRatio"; | |
| 41 const char MediaConstraintsInterface::kMaxWidth[] = "maxWidth"; | |
| 42 const char MediaConstraintsInterface::kMinWidth[] = "minWidth"; | |
| 43 const char MediaConstraintsInterface::kMaxHeight[] = "maxHeight"; | |
| 44 const char MediaConstraintsInterface::kMinHeight[] = "minHeight"; | |
| 45 const char MediaConstraintsInterface::kMaxFrameRate[] = "maxFrameRate"; | |
| 46 const char MediaConstraintsInterface::kMinFrameRate[] = "minFrameRate"; | |
| 47 | |
| 48 // Audio constraints. | |
| 49 const char MediaConstraintsInterface::kEchoCancellation[] = | |
| 50 "echoCancellation"; | |
| 51 const char MediaConstraintsInterface::kGoogEchoCancellation[] = | |
| 52 "googEchoCancellation"; | |
| 53 const char MediaConstraintsInterface::kExtendedFilterEchoCancellation[] = | |
| 54 "googEchoCancellation2"; | |
| 55 const char MediaConstraintsInterface::kDAEchoCancellation[] = | |
| 56 "googDAEchoCancellation"; | |
| 57 const char MediaConstraintsInterface::kAutoGainControl[] = | |
| 58 "googAutoGainControl"; | |
| 59 const char MediaConstraintsInterface::kExperimentalAutoGainControl[] = | |
| 60 "googAutoGainControl2"; | |
| 61 const char MediaConstraintsInterface::kNoiseSuppression[] = | |
| 62 "googNoiseSuppression"; | |
| 63 const char MediaConstraintsInterface::kExperimentalNoiseSuppression[] = | |
| 64 "googNoiseSuppression2"; | |
| 65 const char MediaConstraintsInterface::kHighpassFilter[] = | |
| 66 "googHighpassFilter"; | |
| 67 const char MediaConstraintsInterface::kTypingNoiseDetection[] = | |
| 68 "googTypingNoiseDetection"; | |
| 69 const char MediaConstraintsInterface::kAudioMirroring[] = "googAudioMirroring"; | |
| 70 const char MediaConstraintsInterface::kAecDump[] = "audioDebugRecording"; | |
| 71 | |
| 72 // Google-specific constraint keys for a local video source (getUserMedia). | |
| 73 const char MediaConstraintsInterface::kNoiseReduction[] = "googNoiseReduction"; | |
| 74 | |
| 75 // Constraint keys for CreateOffer / CreateAnswer defined in W3C specification. | |
| 76 const char MediaConstraintsInterface::kOfferToReceiveAudio[] = | |
| 77 "OfferToReceiveAudio"; | |
| 78 const char MediaConstraintsInterface::kOfferToReceiveVideo[] = | |
| 79 "OfferToReceiveVideo"; | |
| 80 const char MediaConstraintsInterface::kVoiceActivityDetection[] = | |
| 81 "VoiceActivityDetection"; | |
| 82 const char MediaConstraintsInterface::kIceRestart[] = | |
| 83 "IceRestart"; | |
| 84 // Google specific constraint for BUNDLE enable/disable. | |
| 85 const char MediaConstraintsInterface::kUseRtpMux[] = | |
| 86 "googUseRtpMUX"; | |
| 87 | |
| 88 // Below constraints should be used during PeerConnection construction. | |
| 89 const char MediaConstraintsInterface::kEnableDtlsSrtp[] = | |
| 90 "DtlsSrtpKeyAgreement"; | |
| 91 const char MediaConstraintsInterface::kEnableRtpDataChannels[] = | |
| 92 "RtpDataChannels"; | |
| 93 // Google-specific constraint keys. | |
| 94 const char MediaConstraintsInterface::kEnableDscp[] = "googDscp"; | |
| 95 const char MediaConstraintsInterface::kEnableIPv6[] = "googIPv6"; | |
| 96 const char MediaConstraintsInterface::kEnableVideoSuspendBelowMinBitrate[] = | |
| 97 "googSuspendBelowMinBitrate"; | |
| 98 const char MediaConstraintsInterface::kCombinedAudioVideoBwe[] = | |
| 99 "googCombinedAudioVideoBwe"; | |
| 100 const char MediaConstraintsInterface::kScreencastMinBitrate[] = | |
| 101 "googScreencastMinBitrate"; | |
| 102 // TODO(ronghuawu): Remove once cpu overuse detection is stable. | |
| 103 const char MediaConstraintsInterface::kCpuOveruseDetection[] = | |
| 104 "googCpuOveruseDetection"; | |
| 105 const char MediaConstraintsInterface::kPayloadPadding[] = "googPayloadPadding"; | |
| 106 | |
| 107 | |
| 108 // Set |value| to the value associated with the first appearance of |key|, or | |
| 109 // return false if |key| is not found. | |
| 110 bool MediaConstraintsInterface::Constraints::FindFirst( | |
| 111 const std::string& key, std::string* value) const { | |
| 112 for (Constraints::const_iterator iter = begin(); iter != end(); ++iter) { | |
| 113 if (iter->key == key) { | |
| 114 *value = iter->value; | |
| 115 return true; | |
| 116 } | |
| 117 } | |
| 118 return false; | |
| 119 } | |
| 120 | |
| 121 // Find the highest-priority instance of the boolean-valued constraint) named by | |
| 122 // |key| and return its value as |value|. |constraints| can be null. | |
| 123 // If |mandatory_constraints| is non-null, it is incremented if the key appears | |
| 124 // among the mandatory constraints. | |
| 125 // Returns true if the key was found and has a valid boolean value. | |
| 126 // If the key appears multiple times as an optional constraint, appearances | |
| 127 // after the first are ignored. | |
| 128 // Note: Because this uses FindFirst, repeated optional constraints whose | |
| 129 // first instance has an unrecognized value are not handled precisely in | |
| 130 // accordance with the specification. | |
| 131 bool FindConstraint(const MediaConstraintsInterface* constraints, | |
| 132 const std::string& key, bool* value, | |
| 133 size_t* mandatory_constraints) { | |
| 134 std::string string_value; | |
| 135 if (!constraints) { | |
| 136 return false; | |
| 137 } | |
| 138 if (constraints->GetMandatory().FindFirst(key, &string_value)) { | |
| 139 if (mandatory_constraints) | |
| 140 ++*mandatory_constraints; | |
| 141 return rtc::FromString(string_value, value); | |
| 142 } | |
| 143 if (constraints->GetOptional().FindFirst(key, &string_value)) { | |
| 144 return rtc::FromString(string_value, value); | |
| 145 } | |
| 146 return false; | |
| 147 } | |
| 148 | |
| 149 } // namespace webrtc | |
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Chromium Code Reviews
Issue 1610243002:
Move talk/app/webrtc to webrtc/api (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master