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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2017 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"context"
"fmt"
"github.com/dlintw/goconf"
)
const (
McuTypeJanus = "janus"
McuTypeProxy = "proxy"
McuTypeDefault = McuTypeJanus
)
var (
ErrNotConnected = fmt.Errorf("not connected")
)
type MediaType int
const (
MediaTypeAudio MediaType = 1 << 0
MediaTypeVideo MediaType = 1 << 1
MediaTypeScreen MediaType = 1 << 2
)
type McuListener interface {
PublicId() string
OnUpdateOffer(client McuClient, offer map[string]interface{})
OnIceCandidate(client McuClient, candidate interface{})
OnIceCompleted(client McuClient)
SubscriberSidUpdated(subscriber McuSubscriber)
PublisherClosed(publisher McuPublisher)
SubscriberClosed(subscriber McuSubscriber)
}
type McuInitiator interface {
Country() string
}
type Mcu interface {
Start() error
Stop()
Reload(config *goconf.ConfigFile)
SetOnConnected(func())
SetOnDisconnected(func())
GetStats() interface{}
NewPublisher(ctx context.Context, listener McuListener, id string, sid string, streamType StreamType, bitrate int, mediaTypes MediaType, initiator McuInitiator) (McuPublisher, error)
NewSubscriber(ctx context.Context, listener McuListener, publisher string, streamType StreamType) (McuSubscriber, error)
}
type StreamType string
const (
StreamTypeAudio StreamType = "audio"
StreamTypeVideo StreamType = "video"
StreamTypeScreen StreamType = "screen"
)
func IsValidStreamType(s string) bool {
switch s {
case string(StreamTypeAudio):
fallthrough
case string(StreamTypeVideo):
fallthrough
case string(StreamTypeScreen):
return true
default:
return false
}
}
type McuClient interface {
Id() string
Sid() string
StreamType() StreamType
MaxBitrate() int
Close(ctx context.Context)
SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{}))
}
type McuPublisher interface {
McuClient
HasMedia(MediaType) bool
SetMedia(MediaType)
}
type McuSubscriber interface {
McuClient
Publisher() string
}
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