Adds trunk/talk folder of revision 359 from libjingles google code to
trunk/talk
git-svn-id: http://webrtc.googlecode.com/svn/trunk@4318 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/app/webrtc/jsepsessiondescription.cc b/talk/app/webrtc/jsepsessiondescription.cc
new file mode 100644
index 0000000..bc65ca5
--- /dev/null
+++ b/talk/app/webrtc/jsepsessiondescription.cc
@@ -0,0 +1,193 @@
+/* libjingle
+ * Copyright 2012, 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/jsepsessiondescription.h"
+
+#include "talk/app/webrtc/webrtcsdp.h"
+#include "talk/base/stringencode.h"
+#include "talk/session/media/mediasession.h"
+
+using talk_base::scoped_ptr;
+using cricket::SessionDescription;
+
+namespace webrtc {
+
+static const char* kSupportedTypes[] = {
+ JsepSessionDescription::kOffer,
+ JsepSessionDescription::kPrAnswer,
+ JsepSessionDescription::kAnswer
+};
+
+static bool IsTypeSupported(const std::string& type) {
+ bool type_supported = false;
+ for (size_t i = 0; i < ARRAY_SIZE(kSupportedTypes); ++i) {
+ if (kSupportedTypes[i] == type) {
+ type_supported = true;
+ break;
+ }
+ }
+ return type_supported;
+}
+
+const char SessionDescriptionInterface::kOffer[] = "offer";
+const char SessionDescriptionInterface::kPrAnswer[] = "pranswer";
+const char SessionDescriptionInterface::kAnswer[] = "answer";
+
+const int JsepSessionDescription::kDefaultVideoCodecId = 100;
+const int JsepSessionDescription::kDefaultVideoCodecFramerate = 30;
+const char JsepSessionDescription::kDefaultVideoCodecName[] = "VP8";
+const int JsepSessionDescription::kMaxVideoCodecWidth = 1280;
+const int JsepSessionDescription::kMaxVideoCodecHeight = 720;
+const int JsepSessionDescription::kDefaultVideoCodecPreference = 1;
+
+SessionDescriptionInterface* CreateSessionDescription(const std::string& type,
+ const std::string& sdp) {
+ return CreateSessionDescription(type, sdp, NULL);
+}
+
+SessionDescriptionInterface* CreateSessionDescription(const std::string& type,
+ const std::string& sdp,
+ SdpParseError* error) {
+ if (!IsTypeSupported(type)) {
+ return NULL;
+ }
+
+ JsepSessionDescription* jsep_desc = new JsepSessionDescription(type);
+ if (!jsep_desc->Initialize(sdp, error)) {
+ delete jsep_desc;
+ return NULL;
+ }
+ return jsep_desc;
+}
+
+JsepSessionDescription::JsepSessionDescription(const std::string& type)
+ : type_(type) {
+}
+
+JsepSessionDescription::~JsepSessionDescription() {}
+
+bool JsepSessionDescription::Initialize(
+ cricket::SessionDescription* description,
+ const std::string& session_id,
+ const std::string& session_version) {
+ if (!description)
+ return false;
+
+ session_id_ = session_id;
+ session_version_ = session_version;
+ description_.reset(description);
+ candidate_collection_.resize(number_of_mediasections());
+ return true;
+}
+
+bool JsepSessionDescription::Initialize(const std::string& sdp,
+ SdpParseError* error) {
+ return SdpDeserialize(sdp, this, error);
+}
+
+bool JsepSessionDescription::AddCandidate(
+ const IceCandidateInterface* candidate) {
+ if (!candidate || candidate->sdp_mline_index() < 0)
+ return false;
+ size_t mediasection_index = 0;
+ if (!GetMediasectionIndex(candidate, &mediasection_index)) {
+ return false;
+ }
+ if (mediasection_index >= number_of_mediasections())
+ return false;
+ if (candidate_collection_[mediasection_index].HasCandidate(candidate)) {
+ return true; // Silently ignore this candidate if we already have it.
+ }
+ const std::string content_name =
+ description_->contents()[mediasection_index].name;
+ const cricket::TransportInfo* transport_info =
+ description_->GetTransportInfoByName(content_name);
+ if (!transport_info) {
+ return false;
+ }
+
+ cricket::Candidate updated_candidate = candidate->candidate();
+ if (updated_candidate.username().empty()) {
+ updated_candidate.set_username(transport_info->description.ice_ufrag);
+ }
+ if (updated_candidate.password().empty()) {
+ updated_candidate.set_password(transport_info->description.ice_pwd);
+ }
+
+ candidate_collection_[mediasection_index].add(
+ new JsepIceCandidate(candidate->sdp_mid(),
+ mediasection_index,
+ updated_candidate));
+ return true;
+}
+
+size_t JsepSessionDescription::number_of_mediasections() const {
+ if (!description_)
+ return 0;
+ return description_->contents().size();
+}
+
+const IceCandidateCollection* JsepSessionDescription::candidates(
+ size_t mediasection_index) const {
+ if (mediasection_index >= candidate_collection_.size())
+ return NULL;
+ return &candidate_collection_[mediasection_index];
+}
+
+bool JsepSessionDescription::ToString(std::string* out) const {
+ if (!description_ || !out)
+ return false;
+ *out = SdpSerialize(*this);
+ return !out->empty();
+}
+
+bool JsepSessionDescription::GetMediasectionIndex(
+ const IceCandidateInterface* candidate,
+ size_t* index) {
+ if (!candidate || !index) {
+ return false;
+ }
+ *index = static_cast<size_t>(candidate->sdp_mline_index());
+ if (description_ && !candidate->sdp_mid().empty()) {
+ bool found = false;
+ // Try to match the sdp_mid with content name.
+ for (size_t i = 0; i < description_->contents().size(); ++i) {
+ if (candidate->sdp_mid() == description_->contents().at(i).name) {
+ *index = i;
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ // If the sdp_mid is presented but we can't find a match, we consider
+ // this as an error.
+ return false;
+ }
+ }
+ return true;
+}
+
+} // namespace webrtc
