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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2012 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/jsepsessiondescription.h" | |
| 29 | |
| 30 #include "talk/app/webrtc/webrtcsdp.h" | |
| 31 #include "talk/session/media/mediasession.h" | |
| 32 #include "webrtc/base/arraysize.h" | |
| 33 #include "webrtc/base/stringencode.h" | |
| 34 | |
| 35 using rtc::scoped_ptr; | |
| 36 using cricket::SessionDescription; | |
| 37 | |
| 38 namespace webrtc { | |
| 39 | |
| 40 static const char* kSupportedTypes[] = { | |
| 41 JsepSessionDescription::kOffer, | |
| 42 JsepSessionDescription::kPrAnswer, | |
| 43 JsepSessionDescription::kAnswer | |
| 44 }; | |
| 45 | |
| 46 static bool IsTypeSupported(const std::string& type) { | |
| 47 bool type_supported = false; | |
| 48 for (size_t i = 0; i < arraysize(kSupportedTypes); ++i) { | |
| 49 if (kSupportedTypes[i] == type) { | |
| 50 type_supported = true; | |
| 51 break; | |
| 52 } | |
| 53 } | |
| 54 return type_supported; | |
| 55 } | |
| 56 | |
| 57 const char SessionDescriptionInterface::kOffer[] = "offer"; | |
| 58 const char SessionDescriptionInterface::kPrAnswer[] = "pranswer"; | |
| 59 const char SessionDescriptionInterface::kAnswer[] = "answer"; | |
| 60 | |
| 61 const int JsepSessionDescription::kDefaultVideoCodecId = 100; | |
| 62 // This is effectively a max value of the frame rate. 30 is default from camera. | |
| 63 const int JsepSessionDescription::kDefaultVideoCodecFramerate = 60; | |
| 64 const char JsepSessionDescription::kDefaultVideoCodecName[] = "VP8"; | |
| 65 // Used as default max video codec size before we have it in signaling. | |
| 66 #if defined(ANDROID) || defined(WEBRTC_IOS) | |
| 67 // Limit default max video codec size for Android to avoid | |
| 68 // HW VP8 codec initialization failure for resolutions higher | |
| 69 // than 1280x720 or 720x1280. | |
| 70 // Same patch for iOS to support 720P in portrait mode. | |
| 71 const int JsepSessionDescription::kMaxVideoCodecWidth = 1280; | |
| 72 const int JsepSessionDescription::kMaxVideoCodecHeight = 1280; | |
| 73 #else | |
| 74 const int JsepSessionDescription::kMaxVideoCodecWidth = 1920; | |
| 75 const int JsepSessionDescription::kMaxVideoCodecHeight = 1080; | |
| 76 #endif | |
| 77 const int JsepSessionDescription::kDefaultVideoCodecPreference = 1; | |
| 78 | |
| 79 SessionDescriptionInterface* CreateSessionDescription(const std::string& type, | |
| 80 const std::string& sdp, | |
| 81 SdpParseError* error) { | |
| 82 if (!IsTypeSupported(type)) { | |
| 83 return NULL; | |
| 84 } | |
| 85 | |
| 86 JsepSessionDescription* jsep_desc = new JsepSessionDescription(type); | |
| 87 if (!jsep_desc->Initialize(sdp, error)) { | |
| 88 delete jsep_desc; | |
| 89 return NULL; | |
| 90 } | |
| 91 return jsep_desc; | |
| 92 } | |
| 93 | |
| 94 JsepSessionDescription::JsepSessionDescription(const std::string& type) | |
| 95 : type_(type) { | |
| 96 } | |
| 97 | |
| 98 JsepSessionDescription::~JsepSessionDescription() {} | |
| 99 | |
| 100 bool JsepSessionDescription::Initialize( | |
| 101 cricket::SessionDescription* description, | |
| 102 const std::string& session_id, | |
| 103 const std::string& session_version) { | |
| 104 if (!description) | |
| 105 return false; | |
| 106 | |
| 107 session_id_ = session_id; | |
| 108 session_version_ = session_version; | |
| 109 description_.reset(description); | |
| 110 candidate_collection_.resize(number_of_mediasections()); | |
| 111 return true; | |
| 112 } | |
| 113 | |
| 114 bool JsepSessionDescription::Initialize(const std::string& sdp, | |
| 115 SdpParseError* error) { | |
| 116 return SdpDeserialize(sdp, this, error); | |
| 117 } | |
| 118 | |
| 119 bool JsepSessionDescription::AddCandidate( | |
| 120 const IceCandidateInterface* candidate) { | |
| 121 if (!candidate || candidate->sdp_mline_index() < 0) | |
| 122 return false; | |
| 123 size_t mediasection_index = 0; | |
| 124 if (!GetMediasectionIndex(candidate, &mediasection_index)) { | |
| 125 return false; | |
| 126 } | |
| 127 if (mediasection_index >= number_of_mediasections()) | |
| 128 return false; | |
| 129 const std::string& content_name = | |
| 130 description_->contents()[mediasection_index].name; | |
| 131 const cricket::TransportInfo* transport_info = | |
| 132 description_->GetTransportInfoByName(content_name); | |
| 133 if (!transport_info) { | |
| 134 return false; | |
| 135 } | |
| 136 | |
| 137 cricket::Candidate updated_candidate = candidate->candidate(); | |
| 138 if (updated_candidate.username().empty()) { | |
| 139 updated_candidate.set_username(transport_info->description.ice_ufrag); | |
| 140 } | |
| 141 if (updated_candidate.password().empty()) { | |
| 142 updated_candidate.set_password(transport_info->description.ice_pwd); | |
| 143 } | |
| 144 | |
| 145 scoped_ptr<JsepIceCandidate> updated_candidate_wrapper( | |
| 146 new JsepIceCandidate(candidate->sdp_mid(), | |
| 147 static_cast<int>(mediasection_index), | |
| 148 updated_candidate)); | |
| 149 if (!candidate_collection_[mediasection_index].HasCandidate( | |
| 150 updated_candidate_wrapper.get())) | |
| 151 candidate_collection_[mediasection_index].add( | |
| 152 updated_candidate_wrapper.release()); | |
| 153 | |
| 154 return true; | |
| 155 } | |
| 156 | |
| 157 size_t JsepSessionDescription::number_of_mediasections() const { | |
| 158 if (!description_) | |
| 159 return 0; | |
| 160 return description_->contents().size(); | |
| 161 } | |
| 162 | |
| 163 const IceCandidateCollection* JsepSessionDescription::candidates( | |
| 164 size_t mediasection_index) const { | |
| 165 if (mediasection_index >= candidate_collection_.size()) | |
| 166 return NULL; | |
| 167 return &candidate_collection_[mediasection_index]; | |
| 168 } | |
| 169 | |
| 170 bool JsepSessionDescription::ToString(std::string* out) const { | |
| 171 if (!description_ || !out) | |
| 172 return false; | |
| 173 *out = SdpSerialize(*this); | |
| 174 return !out->empty(); | |
| 175 } | |
| 176 | |
| 177 bool JsepSessionDescription::GetMediasectionIndex( | |
| 178 const IceCandidateInterface* candidate, | |
| 179 size_t* index) { | |
| 180 if (!candidate || !index) { | |
| 181 return false; | |
| 182 } | |
| 183 *index = static_cast<size_t>(candidate->sdp_mline_index()); | |
| 184 if (description_ && !candidate->sdp_mid().empty()) { | |
| 185 bool found = false; | |
| 186 // Try to match the sdp_mid with content name. | |
| 187 for (size_t i = 0; i < description_->contents().size(); ++i) { | |
| 188 if (candidate->sdp_mid() == description_->contents().at(i).name) { | |
| 189 *index = i; | |
| 190 found = true; | |
| 191 break; | |
| 192 } | |
| 193 } | |
| 194 if (!found) { | |
| 195 // If the sdp_mid is presented but we can't find a match, we consider | |
| 196 // this as an error. | |
| 197 return false; | |
| 198 } | |
| 199 } | |
| 200 return true; | |
| 201 } | |
| 202 | |
| 203 } // 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