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/**
* @file llwebrtc.h
* @brief WebRTC interface
*
* $LicenseInfo:firstyear=2023&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2023, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free tSoftware
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LLWEBRTC_H
#define LLWEBRTC_H
#include <string>
#include <vector>
#ifdef LL_MAKEDLL
#ifdef WEBRTC_WIN
#define LLSYMEXPORT __declspec(dllexport)
#elif WEBRTC_LINUX
#define LLSYMEXPORT __attribute__((visibility("default")))
#else
#define LLSYMEXPORT /**/
#endif
#else
#define LLSYMEXPORT /**/
#endif // LL_MAKEDLL
namespace llwebrtc
{
struct LLWebRTCIceCandidate
{
std::string candidate;
std::string sdp_mid;
int mline_index;
};
class LLWebRTCVoiceDevice
{
public:
std::string display_name; // friendly value for the user
std::string id; // internal value for selection
LLWebRTCVoiceDevice(const std::string &display_name, const std::string &id) :
display_name(display_name),
id(id) {};
};
typedef std::vector<LLWebRTCVoiceDevice> LLWebRTCVoiceDeviceList;
class LLWebRTCDevicesObserver
{
public:
virtual void OnDevicesChanged(const LLWebRTCVoiceDeviceList &render_devices, const LLWebRTCVoiceDeviceList &capture_devices) = 0;
};
class LLWebRTCDeviceInterface
{
public:
virtual void refreshDevices() = 0;
virtual void setCaptureDevice(const std::string& id) = 0;
virtual void setRenderDevice(const std::string& id) = 0;
virtual void setDevicesObserver(LLWebRTCDevicesObserver *observer) = 0;
virtual void unsetDevicesObserver(LLWebRTCDevicesObserver *observer) = 0;
virtual void setTuningMode(bool enable) = 0;
virtual float getTuningAudioLevel() = 0;
virtual float getPeerAudioLevel() = 0;
};
class LLWebRTCAudioInterface
{
public:
virtual void setMute(bool mute) = 0;
virtual void setReceiveVolume(float volume) = 0; // volume between 0.0 and 1.0
virtual void setSendVolume(float volume) = 0; // volume between 0.0 and 1.0
};
class LLWebRTCDataObserver
{
public:
virtual void OnDataReceived(const std::string& data, bool binary) = 0;
};
class LLWebRTCDataInterface
{
public:
virtual void sendData(const std::string& data, bool binary=false) = 0;
virtual void setDataObserver(LLWebRTCDataObserver *observer) = 0;
virtual void unsetDataObserver(LLWebRTCDataObserver *observer) = 0;
};
class LLWebRTCSignalingObserver
{
public:
enum IceGatheringState{
ICE_GATHERING_NEW,
ICE_GATHERING_GATHERING,
ICE_GATHERING_COMPLETE
};
virtual void OnIceGatheringState(IceGatheringState state) = 0;
virtual void OnIceCandidate(const LLWebRTCIceCandidate& candidate) = 0;
virtual void OnOfferAvailable(const std::string& sdp) = 0;
virtual void OnRenegotiationNeeded() = 0;
virtual void OnAudioEstablished(LLWebRTCAudioInterface *audio_interface) = 0;
virtual void OnDataChannelReady(LLWebRTCDataInterface *data_interface) = 0;
};
class LLWebRTCPeerConnection
{
public:
virtual void setSignalingObserver(LLWebRTCSignalingObserver* observer) = 0;
virtual void unsetSignalingObserver(LLWebRTCSignalingObserver* observer) = 0;
virtual bool initializeConnection() = 0;
virtual void shutdownConnection() = 0;
virtual void AnswerAvailable(const std::string &sdp) = 0;
};
LLSYMEXPORT void init();
LLSYMEXPORT void terminate();
LLSYMEXPORT LLWebRTCDeviceInterface* getDeviceInterface();
LLSYMEXPORT LLWebRTCPeerConnection* newPeerConnection();
LLSYMEXPORT void freePeerConnection(LLWebRTCPeerConnection *connection);
}
#endif // LLWEBRTC_H
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