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-rw-r--r--dom/media/webrtc/sdp/SdpHelper.h109
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diff --git a/dom/media/webrtc/sdp/SdpHelper.h b/dom/media/webrtc/sdp/SdpHelper.h
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+/* -*- 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_