1 files changed, 197 insertions, 0 deletions
diff --git a/dom/media/webrtc/sdp/SdpMediaSection.cpp b/dom/media/webrtc/sdp/SdpMediaSection.cpp
new file mode 100644
index 0000000000..dd8f6e54fe
--- /dev/null
+++ b/dom/media/webrtc/sdp/SdpMediaSection.cpp
@@ -0,0 +1,197 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "sdp/SdpMediaSection.h"
+
+namespace mozilla {
+const SdpFmtpAttributeList::Parameters* SdpMediaSection::FindFmtp(
+    const std::string& pt) const {
+  const SdpAttributeList& attrs = GetAttributeList();
+
+  if (attrs.HasAttribute(SdpAttribute::kFmtpAttribute)) {
+    for (auto& fmtpAttr : attrs.GetFmtp().mFmtps) {
+      if (fmtpAttr.format == pt && fmtpAttr.parameters) {
+        return fmtpAttr.parameters.get();
+      }
+    }
+  }
+  return nullptr;
+}
+
+void SdpMediaSection::SetFmtp(const SdpFmtpAttributeList::Fmtp& fmtpToSet) {
+  UniquePtr<SdpFmtpAttributeList> fmtps(new SdpFmtpAttributeList);
+
+  if (GetAttributeList().HasAttribute(SdpAttribute::kFmtpAttribute)) {
+    *fmtps = GetAttributeList().GetFmtp();
+  }
+
+  bool found = false;
+  for (SdpFmtpAttributeList::Fmtp& fmtp : fmtps->mFmtps) {
+    if (fmtp.format == fmtpToSet.format) {
+      fmtp = fmtpToSet;
+      found = true;
+    }
+  }
+
+  if (!found) {
+    fmtps->mFmtps.push_back(fmtpToSet);
+  }
+
+  GetAttributeList().SetAttribute(fmtps.release());
+}
+
+void SdpMediaSection::RemoveFmtp(const std::string& pt) {
+  UniquePtr<SdpFmtpAttributeList> fmtps(new SdpFmtpAttributeList);
+
+  SdpAttributeList& attrList = GetAttributeList();
+  if (attrList.HasAttribute(SdpAttribute::kFmtpAttribute)) {
+    *fmtps = attrList.GetFmtp();
+  }
+
+  for (size_t i = 0; i < fmtps->mFmtps.size(); ++i) {
+    if (pt == fmtps->mFmtps[i].format) {
+      fmtps->mFmtps.erase(fmtps->mFmtps.begin() + i);
+      break;
+    }
+  }
+
+  attrList.SetAttribute(fmtps.release());
+}
+
+const SdpRtpmapAttributeList::Rtpmap* SdpMediaSection::FindRtpmap(
+    const std::string& pt) const {
+  auto& attrs = GetAttributeList();
+  if (!attrs.HasAttribute(SdpAttribute::kRtpmapAttribute)) {
+    return nullptr;
+  }
+
+  const SdpRtpmapAttributeList& rtpmap = attrs.GetRtpmap();
+  if (!rtpmap.HasEntry(pt)) {
+    return nullptr;
+  }
+
+  return &rtpmap.GetEntry(pt);
+}
+
+const SdpSctpmapAttributeList::Sctpmap* SdpMediaSection::GetSctpmap() const {
+  auto& attrs = GetAttributeList();
+  if (!attrs.HasAttribute(SdpAttribute::kSctpmapAttribute)) {
+    return nullptr;
+  }
+
+  const SdpSctpmapAttributeList& sctpmap = attrs.GetSctpmap();
+  if (sctpmap.mSctpmaps.empty()) {
+    return nullptr;
+  }
+
+  return &sctpmap.GetFirstEntry();
+}
+
+uint32_t SdpMediaSection::GetSctpPort() const {
+  auto& attrs = GetAttributeList();
+  if (!attrs.HasAttribute(SdpAttribute::kSctpPortAttribute)) {
+    return 0;
+  }
+
+  return attrs.GetSctpPort();
+}
+
+bool SdpMediaSection::GetMaxMessageSize(uint32_t* size) const {
+  *size = 0;
+
+  auto& attrs = GetAttributeList();
+  if (!attrs.HasAttribute(SdpAttribute::kMaxMessageSizeAttribute)) {
+    return false;
+  }
+
+  *size = attrs.GetMaxMessageSize();
+  return true;
+}
+
+bool SdpMediaSection::HasRtcpFb(const std::string& pt,
+                                SdpRtcpFbAttributeList::Type type,
+                                const std::string& subType) const {
+  const SdpAttributeList& attrs(GetAttributeList());
+
+  if (!attrs.HasAttribute(SdpAttribute::kRtcpFbAttribute)) {
+    return false;
+  }
+
+  for (auto& rtcpfb : attrs.GetRtcpFb().mFeedbacks) {
+    if (rtcpfb.type == type) {
+      if (rtcpfb.pt == "*" || rtcpfb.pt == pt) {
+        if (rtcpfb.parameter == subType) {
+          return true;
+        }
+      }
+    }
+  }
+
+  return false;
+}
+
+SdpRtcpFbAttributeList SdpMediaSection::GetRtcpFbs() const {
+  SdpRtcpFbAttributeList result;
+  if (GetAttributeList().HasAttribute(SdpAttribute::kRtcpFbAttribute)) {
+    result = GetAttributeList().GetRtcpFb();
+  }
+  return result;
+}
+
+void SdpMediaSection::SetRtcpFbs(const SdpRtcpFbAttributeList& rtcpfbs) {
+  if (rtcpfbs.mFeedbacks.empty()) {
+    GetAttributeList().RemoveAttribute(SdpAttribute::kRtcpFbAttribute);
+    return;
+  }
+
+  GetAttributeList().SetAttribute(new SdpRtcpFbAttributeList(rtcpfbs));
+}
+
+void SdpMediaSection::SetSsrcs(const std::vector<uint32_t>& ssrcs,
+                               const std::string& cname) {
+  if (ssrcs.empty()) {
+    GetAttributeList().RemoveAttribute(SdpAttribute::kSsrcAttribute);
+    return;
+  }
+
+  UniquePtr<SdpSsrcAttributeList> ssrcAttr(new SdpSsrcAttributeList);
+  for (auto ssrc : ssrcs) {
+    // When using ssrc attributes, we are required to at least have a cname.
+    // (See https://tools.ietf.org/html/rfc5576#section-6.1)
+    std::string cnameAttr("cname:");
+    cnameAttr += cname;
+    ssrcAttr->PushEntry(ssrc, cnameAttr);
+  }
+
+  GetAttributeList().SetAttribute(ssrcAttr.release());
+}
+
+void SdpMediaSection::AddMsid(const std::string& id,
+                              const std::string& appdata) {
+  UniquePtr<SdpMsidAttributeList> msids(new SdpMsidAttributeList);
+  if (GetAttributeList().HasAttribute(SdpAttribute::kMsidAttribute)) {
+    msids->mMsids = GetAttributeList().GetMsid().mMsids;
+  }
+  msids->PushEntry(id, appdata);
+  GetAttributeList().SetAttribute(msids.release());
+}
+
+const SdpRidAttributeList::Rid* SdpMediaSection::FindRid(
+    const std::string& id) const {
+  if (!GetAttributeList().HasAttribute(SdpAttribute::kRidAttribute)) {
+    return nullptr;
+  }
+
+  for (const auto& rid : GetAttributeList().GetRid().mRids) {
+    if (rid.id == id) {
+      return &rid;
+    }
+  }
+
+  return nullptr;
+}
+
+}  // namespace mozilla