100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
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#ifndef TGCALLS_CONTENT_NEGOTIATION_H
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#define TGCALLS_CONTENT_NEGOTIATION_H
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#include <memory>
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#include "pc/channel_manager.h"
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#include "pc/media_session.h"
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#include "pc/session_description.h"
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#include "p2p/base/transport_description_factory.h"
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#include "v2/Signaling.h"
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namespace tgcalls {
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class ContentNegotiationContext {
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public:
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struct NegotiationContents {
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uint32_t exchangeId = 0;
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std::vector<signaling::MediaContent> contents;
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};
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struct PendingOutgoingOffer {
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uint32_t exchangeId = 0;
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};
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struct PendingOutgoingChannel {
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cricket::MediaDescriptionOptions description;
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uint32_t ssrc = 0;
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std::vector<signaling::SsrcGroup> ssrcGroups;
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PendingOutgoingChannel(cricket::MediaDescriptionOptions &&description_) :
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description(std::move(description_)) {
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}
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};
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struct OutgoingChannel {
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std::string id;
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signaling::MediaContent content;
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OutgoingChannel(std::string id_, signaling::MediaContent content_) :
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id(id_), content(content_) {
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}
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};
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struct CoordinatedState {
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std::vector<signaling::MediaContent> outgoingContents;
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std::vector<signaling::MediaContent> incomingContents;
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};
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public:
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ContentNegotiationContext(bool isOutgoing, rtc::UniqueRandomIdGenerator *uniqueRandomIdGenerator);
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~ContentNegotiationContext();
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void copyCodecsFromChannelManager(cricket::ChannelManager *channelManager, bool randomize);
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std::string addOutgoingChannel(signaling::MediaContent::Type mediaType);
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void removeOutgoingChannel(std::string const &id);
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std::unique_ptr<NegotiationContents> getPendingOffer();
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std::unique_ptr<NegotiationContents> setRemoteNegotiationContent(std::unique_ptr<NegotiationContents> &&remoteNegotiationContent);
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std::unique_ptr<CoordinatedState> coordinatedState() const;
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absl::optional<uint32_t> outgoingChannelSsrc(std::string const &id) const;
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private:
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std::string takeNextOutgoingChannelId();
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std::unique_ptr<cricket::SessionDescription> currentSessionDescriptionFromCoordinatedState();
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std::unique_ptr<NegotiationContents> getAnswer(std::unique_ptr<NegotiationContents> &&offer);
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void setAnswer(std::unique_ptr<NegotiationContents> &&answer);
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private:
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bool _isOutgoing = false;
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rtc::UniqueRandomIdGenerator *_uniqueRandomIdGenerator = nullptr;
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std::unique_ptr<cricket::TransportDescriptionFactory> _transportDescriptionFactory;
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std::unique_ptr<cricket::MediaSessionDescriptionFactory> _sessionDescriptionFactory;
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std::vector<std::string> _channelIdOrder;
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std::vector<webrtc::RtpHeaderExtensionCapability> _rtpAudioExtensions;
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std::vector<webrtc::RtpHeaderExtensionCapability> _rtpVideoExtensions;
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std::vector<PendingOutgoingChannel> _outgoingChannelDescriptions;
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bool _needNegotiation = false;
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std::vector<OutgoingChannel> _outgoingChannels;
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std::vector<signaling::MediaContent> _incomingChannels;
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std::unique_ptr<PendingOutgoingOffer> _pendingOutgoingOffer;
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int _nextOutgoingChannelId = 0;
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};
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} // namespace tgcalls
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#endif
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