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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_
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