mirror of https://bitbucket.org/ausocean/av.git
94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
/*
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NAME
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RtpToTsConverter.go - provides utilities for the conversion of Rtp packets
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to equivalent MpegTs packets.
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DESCRIPTION
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See Readme.md
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AUTHOR
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Saxon Nelson-Milton <saxon.milton@gmail.com>
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LICENSE
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RtpToTsConverter.go is Copyright (C) 2017 the Australian Ocean Lab (AusOcean)
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It is free software: you can redistribute it and/or modify them
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with revid in gpl.txt. If not, see [GNU licenses](http://www.gnu.org/licenses).
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*/
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package packet
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import "fmt"
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type RtpToTsConverter interface {
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Convert()
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}
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type rtpToTsConverter struct {
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TsChan <-chan *MpegTsPacket
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RtpChan chan<- RtpPacket
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tsChan chan<- *MpegTsPacket
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rtpChan <-chan RtpPacket
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currentTsPacket *MpegTsPacket
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currentCC byte
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payloadByteChan chan byte
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}
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func NewRtpToTsConverter() (c *rtpToTsConverter) {
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c = new(rtpToTsConverter)
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tsChan := make(chan *MpegTsPacket)
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rtpChan := make(chan RtpPacket)
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c.TsChan = tsChan
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c.RtpChan = rtpChan
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c.tsChan = tsChan
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c.rtpChan = rtpChan
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c.currentTsPacket = new(MpegTsPacket)
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c.currentCC = 0
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c.payloadByteChan = make(chan byte, 100)
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return
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}
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func (c* rtpToTsConverter) Convert() {
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for {
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select{
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default:
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case rtpPacket := <-c.rtpChan:
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fmt.Println("here4")
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for ii := range rtpPacket.Payload {
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c.payloadByteChan<-rtpPacket.Payload[ii]
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}
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// If we have 156 bytes of payload then we can fill up a mpegts packet
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fmt.Println("here5")
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if len(c.payloadByteChan) > 156 {
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fmt.Println("here6")
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c.currentTsPacket = new(MpegTsPacket)
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c.currentTsPacket.SyncByte = 0x47
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c.currentTsPacket.TEI = false
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c.currentTsPacket.PUSI = true
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c.currentTsPacket.Priority = false
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c.currentTsPacket.PID = 4096
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c.currentTsPacket.TSC = 0
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c.currentTsPacket.AFC = 1 // no adaptation field - payload only
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c.currentTsPacket.Payload = make([]byte, 156)
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fmt.Println("here7")
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for ii:=0; ii < 156; ii++ {
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fmt.Println("here8")
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c.currentTsPacket.Payload[ii] = <-c.payloadByteChan
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}
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c.tsChan<-c.currentTsPacket
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}
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}
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}
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}
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