1 files changed, 109 insertions, 0 deletions
diff --git a/dom/media/webrtc/sdp/SdpHelper.h b/dom/media/webrtc/sdp/SdpHelper.h
new file mode 100644
index 0000000000..3c65d01442
--- /dev/null
+++ b/dom/media/webrtc/sdp/SdpHelper.h
@@ -0,0 +1,109 @@
+/* -*- 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/. */
+
+#ifndef _SDPHELPER_H_
+#define _SDPHELPER_H_
+
+#include "nsError.h"
+
+#include "sdp/SdpMediaSection.h"
+#include "sdp/SdpAttribute.h"
+
+#include "transport/m_cpp_utils.h"
+
+#include <string>
+#include <map>
+#include <vector>
+
+namespace mozilla {
+class SdpMediaSection;
+class Sdp;
+
+class SdpHelper {
+ public:
+  // Takes a std::string* into which error strings will be written for the
+  // lifetime of the SdpHelper.
+  explicit SdpHelper(std::string* errorDest) : mLastError(*errorDest) {}
+  ~SdpHelper() {}
+
+  nsresult GetComponent(const std::string& candidate, size_t* component);
+  nsresult CopyTransportParams(size_t numComponents,
+                               const SdpMediaSection& source,
+                               SdpMediaSection* dest);
+  bool AreOldTransportParamsValid(const Sdp& oldAnswer,
+                                  const Sdp& offerersPreviousSdp,
+                                  const Sdp& newOffer, size_t level);
+  bool IceCredentialsDiffer(const SdpMediaSection& msection1,
+                            const SdpMediaSection& msection2);
+
+  bool MsectionIsDisabled(const SdpMediaSection& msection) const;
+  static void DisableMsection(Sdp* sdp, SdpMediaSection* msection);
+
+  // Maps each mid to the m-section that owns its bundle transport.
+  // Mids that do not appear in an a=group:BUNDLE do not appear here.
+  typedef std::map<std::string, const SdpMediaSection*> BundledMids;
+
+  nsresult GetBundledMids(const Sdp& sdp, BundledMids* bundledMids);
+
+  bool OwnsTransport(const Sdp& localSdp, uint16_t level, sdp::SdpType type);
+  bool OwnsTransport(const SdpMediaSection& msection,
+                     const BundledMids& bundledMids, sdp::SdpType type);
+  void GetBundleGroups(const Sdp& sdp,
+                       std::vector<SdpGroupAttributeList::Group>* groups) const;
+
+  nsresult GetMidFromLevel(const Sdp& sdp, uint16_t level, std::string* mid);
+  nsresult GetIdsFromMsid(const Sdp& sdp, const SdpMediaSection& msection,
+                          std::vector<std::string>* streamId);
+  nsresult GetMsids(const SdpMediaSection& msection,
+                    std::vector<SdpMsidAttributeList::Msid>* msids);
+  nsresult ParseMsid(const std::string& msidAttribute, std::string* streamId,
+                     std::string* trackId);
+  nsresult AddCandidateToSdp(Sdp* sdp, const std::string& candidate,
+                             uint16_t level, const std::string& ufrag);
+  nsresult SetIceGatheringComplete(Sdp* sdp, const std::string& ufrag);
+  nsresult SetIceGatheringComplete(Sdp* sdp, uint16_t level,
+                                   const std::string& ufrag);
+  void SetDefaultAddresses(const std::string& defaultCandidateAddr,
+                           uint16_t defaultCandidatePort,
+                           const std::string& defaultRtcpCandidateAddr,
+                           uint16_t defaultRtcpCandidatePort,
+                           SdpMediaSection* msection);
+  void SetupMsidSemantic(const std::vector<std::string>& msids, Sdp* sdp) const;
+
+  std::string GetCNAME(const SdpMediaSection& msection) const;
+
+  SdpMediaSection* FindMsectionByMid(Sdp& sdp, const std::string& mid) const;
+
+  const SdpMediaSection* FindMsectionByMid(const Sdp& sdp,
+                                           const std::string& mid) const;
+
+  nsresult CopyStickyParams(const SdpMediaSection& source,
+                            SdpMediaSection* dest);
+  bool HasRtcp(SdpMediaSection::Protocol proto) const;
+  static SdpMediaSection::Protocol GetProtocolForMediaType(
+      SdpMediaSection::MediaType type);
+  void AppendSdpParseErrors(
+      const std::vector<std::pair<size_t, std::string> >& aErrors,
+      std::string* aErrorString);
+
+  static bool GetPtAsInt(const std::string& ptString, uint16_t* ptOutparam);
+
+  void NegotiateAndAddExtmaps(
+      const SdpMediaSection& remoteMsection,
+      std::vector<SdpExtmapAttributeList::Extmap>& localExtensions,
+      SdpMediaSection* localMsection);
+
+  bool SdpMatch(const Sdp& sdp1, const Sdp& sdp2);
+  nsresult ValidateTransportAttributes(const Sdp& aSdp, sdp::SdpType aType);
+
+ private:
+  std::string& mLastError;
+
+  DISALLOW_COPY_ASSIGN(SdpHelper);
+};
+}  // namespace mozilla
+
+#endif  // _SDPHELPER_H_