mirror of https://bitbucket.org/ausocean/av.git
516 lines
14 KiB
Go
516 lines
14 KiB
Go
/*
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NAME
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MpegTs.go - provides a data structure intended to encapsulate the properties
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of an MpegTs packet.
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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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MpegTs.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 packets
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import (
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//"bytes"
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"fmt"
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_"io"
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_"log"
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_"net"
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"reflect"
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"testing"
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"time"
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"math/rand"
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_"github.com/beatgammit/rtsp"
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)
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/*******************************************************
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Testing stuff related to connection i.e. rtsp, rtp, rtcp
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********************************************************/
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const (
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rtpPort = 17300
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rtcpPort = 17319
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rtspUrl = "rtsp://192.168.0.50:8554/CH002.sdp"
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rtpUrl = "rtsp://192.168.0.50:8554/CH002.sdp/track1"
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)
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/* Let's see if we can connect to an rtsp device then read an rtp stream,
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and then convert the rtp packets to mpegts packets and output. */
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/*
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func TestRTSP(t *testing.T) {
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sess := rtsp.NewSession()
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res, err := sess.Options(rtspUrl)
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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res, err = sess.Describe(rtspUrl)
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if err != nil {
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log.Fatalln(err)
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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p, err := rtsp.ParseSdp(&io.LimitedReader{R: res.Body, N: res.ContentLength})
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Printf("%+v", p)
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res, err = sess.Setup(rtpUrl, fmt.Sprintf("RTP/AVP;unicast;client_port=%d-%d", rtpPort, rtcpPort))
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Println(res)
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res, err = sess.Play(rtspUrl, res.Header.Get("Session"))
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Println(res)
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}
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func TestRTP(t *testing.T) {
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sess := rtsp.NewSession()
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res, err := sess.Options(rtspUrl)
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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res, err = sess.Describe(rtspUrl)
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if err != nil {
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log.Fatalln(err)
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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p, err := rtsp.ParseSdp(&io.LimitedReader{R: res.Body, N: res.ContentLength})
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Printf("%+v", p)
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res, err = sess.Setup(rtpUrl, fmt.Sprintf("RTP/AVP;unicast;client_port=%d-%d", rtpPort, rtcpPort))
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Println(res)
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res, err = sess.Play(rtspUrl, res.Header.Get("Session"))
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if err != nil {
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t.Errorf("Shouldn't have got error: %v\n", err)
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}
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log.Println(res)
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// create udp connection for rtp stuff
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rtpLaddr, err := net.ResolveUDPAddr("udp", "192.168.0.109:17300")
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if err != nil {
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t.Errorf("Local rtp addr not set! %v\n", err)
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}
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rtpAddr, err := net.ResolveUDPAddr("udp", "192.168.0.50:17300")
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if err != nil {
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t.Errorf("Resolving rtp address didn't work! %v\n", err)
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}
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rtpConn, err := net.DialUDP("udp", rtpLaddr, rtpAddr)
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if err != nil {
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t.Errorf("Conncection not established! %v\n", err)
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}
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// Create udp connection for rtcp stuff
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rtcpLaddr, err := net.ResolveUDPAddr("udp", "192.168.0.109:17319")
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if err != nil {
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t.Errorf("Local RTCP address not resolved! %v\n", err)
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}
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rtcpAddr, err := net.ResolveUDPAddr("udp", "192.168.0.50:17301")
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if err != nil {
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t.Errorf("Remote RTCP address not resolved! %v\n", err)
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}
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rtcpConn, err := net.DialUDP("udp", rtcpLaddr, rtcpAddr)
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if err != nil {
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t.Errorf("Connection not established! %v\n", err)
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}
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// let's create a session that will store useful stuff from the connections
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rtpSession := NewSession(rtpConn, rtcpConn)
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time.Sleep(2 * time.Second)
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select {
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default:
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t.Errorf("Should have got rtpPacket!")
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case rtpPacket := <-rtpSession.RtpChan:
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fmt.Printf("RTP packet: %v\n", rtpPacket)
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}
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}
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*/
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/*******************************************************
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Testing stuff related to the Nal.go file
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********************************************************/
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var parseInput = []byte{
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0x6C, // 3NalUnitBits = 101(5), Fragment type = 1100 (type = 12 )
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0x94, // starbit = 1, endbit = 0, Reservedbit = 0, 5NalUnitBits = 10100 (20)
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0x8E, // 10001110 random frame byte
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0x26, // 00100110 random frame byte
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0xD0, // 11010000 random frame byte
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}
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var expectedParsing = []interface{}{
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byte(3),
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byte(12),
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bool(true),
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bool(false),
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bool(false),
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byte(20),
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[]byte{0x8E, 0x26, 0xD0},
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}
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const (
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nalTestType = 12
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)
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func TestNalFragmentParsing(t *testing.T) {
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nalUnit := ParseNALFragment(parseInput)
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value := reflect.ValueOf(*nalUnit)
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length := value.NumField()
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fields := make([]interface{}, length)
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for ii := 0; ii < length; ii++ {
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fields[ii] = value.Field(ii).Interface()
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}
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for ii := range fields {
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if !reflect.DeepEqual(fields[ii], expectedParsing[ii]) {
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t.Errorf("Bad Parsing! Field: %v wanted: %v got: %v\n", ii, expectedParsing[ii],
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fields[ii])
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}
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}
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}
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func TestNalFragmentToByteSlice(t *testing.T) {
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nalUnit := ParseNALFragment(parseInput)
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output := nalUnit.ToByteSlice()
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for ii := range output {
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if output[ii] != parseInput[ii] {
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t.Errorf("Bad conversion to byte slice at %vth byte! wanted: %v got: %v",
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parseInput[ii], output[ii])
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}
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}
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}
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func TestNalFragmentType(t *testing.T) {
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nalUnit := ParseNALFragment(parseInput)
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nalType := nalUnit.GetType()
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if nalType != nalTestType {
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t.Errorf("Returned wrong type!")
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}
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}
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func TestNalSpsPpsParsing(t *testing.T) {
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nalSpsPps := ParseNALSpsPps(parseInput)
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for ii := range parseInput {
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if nalSpsPps.Data[ii] != parseInput[ii] {
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t.Errorf("Bad Parsing! Byte: %v wanted: %v got: %v\n", ii, parseInput[ii],
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nalSpsPps.Data[ii])
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}
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}
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}
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func TestNalSpsPpsToByteSlice(t *testing.T) {
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nalSpsPps := ParseNALSpsPps(parseInput)
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nalSpsPpsByteSlice := nalSpsPps.ToByteSlice()
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for ii := range parseInput {
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if nalSpsPpsByteSlice[ii] != parseInput[ii] {
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t.Errorf("Bad conversion to byte slice! Byte: %v wanted: %v got: %v\n", ii,
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parseInput[ii], nalSpsPpsByteSlice[ii])
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}
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}
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}
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func TestNalSpsPpsType(t *testing.T) {
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nalSpsPps := ParseNALSpsPps(parseInput)
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if nalSpsPps.GetType() != nalTestType {
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t.Errorf("Returned wrong type!")
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}
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}
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/*******************************************************
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Pes Packet testing!
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********************************************************/
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const (
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dataLength = 3 // bytes
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)
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func TestPesToByteSlice(t *testing.T) {
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pesPkt := PESPacket{
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byte(0xE0), // StreamID
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uint16(6), // Length
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byte(0), // ScramblingControl
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bool(true), // Priority
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bool(false), // DAI
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bool(false), // copyright
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bool(true), // Original
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byte(0), // PDI
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bool(false), // Escr
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bool(false), // ESRate
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bool(false), // DSMTrickMode
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bool(false), // ACI
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bool(false), // CRC
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bool(false), // Ext
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byte(0), // header length
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[]byte{},
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[]byte{},
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[]byte{ // data
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0xEA,
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0x4B,
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0x12,
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},
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}
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pesExpectedOutput := []byte{
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0x00, // packet start code prefix byte 1
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0x00, // packet start code prefix byte 2
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0x01, // packet start code prefix byte 3
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0xE0, // stream ID
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0x00, // PES Packet length byte 1
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0x06, // PES packet length byte 2
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0x89, // Marker bits,ScramblingControl, Priority, DAI, Copyright, Original
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0x00, // PDI, ESCR, ESRate, DSMTrickMode, ACI, CRC, Ext
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0x00, // header length
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0xEA, // data byte 1
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0x4B, // data byte 2
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0x12, // data byte 3
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}
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pesPktAsByteSlice := pesPkt.ToByteSlice()
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for ii := range pesPktAsByteSlice {
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if pesPktAsByteSlice[ii] != pesExpectedOutput[ii] {
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t.Errorf("Conversion to byte slice bad! Byte: %v Wanted: %v Got: %v",
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ii, pesExpectedOutput[ii], pesPktAsByteSlice[ii])
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}
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}
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}
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/*******************************************************
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Mpegts testing
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********************************************************/
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func TestMpegTsToByteSlice(t *testing.T){
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afRemainderLength := 180
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afField := make([]byte, afRemainderLength+1)
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afField[0] = byte(afRemainderLength)
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afField[1] = byte(0)
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for i := 2; i < len(afField); i++ {
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afField[i] = 0xFF
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}
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tsPkt := MpegTsPacket{
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byte(0x47), // sync byte
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bool(false), // TEI
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bool(false), // PUSI
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bool(false), // Priority
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uint16(256), // PID
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byte(0), // TSC
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byte(3), // AFC
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byte(6), // CC
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afField, // AF
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[]byte{ // data
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0x67,
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0xB2,
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0xE3,
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},
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}
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expectedOutput := []byte{
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0x47,
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0x01,
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0x00,
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0x36,
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byte(afRemainderLength),
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0x00,
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// this is where stuffing is, expect that to be 0xFF
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0x67,
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0xB2,
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0xE3,
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}
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tsPktAsByteSlice := tsPkt.ToByteSlice()
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for ii := 0; ii < 6; ii++ {
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if tsPktAsByteSlice[ii] != expectedOutput[ii] {
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t.Errorf("Conversion to byte slice bad! Byte: %v Wanted: %v Got: %v",
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ii, expectedOutput[ii], tsPktAsByteSlice[ii])
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}
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}
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// Check that the stuffing is all there
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for ii := 6; ii < 185; ii++ {
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if tsPktAsByteSlice[ii] != 0xFF {
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t.Errorf("Conversion to byte slice bad! Byte: %v Wanted: %v Got: %v",
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ii, byte(0xFF), tsPktAsByteSlice[ii])
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}
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}
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for ii := 185; ii < 188; ii++ {
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if tsPktAsByteSlice[ii] != expectedOutput[ii-185+6] {
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t.Errorf("Conversion to byte slice bad! Byte: %v Wanted: %v Got: %v",
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ii, expectedOutput[ii], tsPktAsByteSlice[ii])
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}
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}
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}
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/*******************************************************
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RtpToTsConverter testing
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********************************************************/
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func TestRtpToTsConverter(t *testing.T){
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converter := NewRtpToTsConverter()
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go converter.Convert()
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// Create first rtp packet
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rtpPacket1 := new(RtpPacket)
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rtpPacket1.Version = 2
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rtpPacket1.Padding = false
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rtpPacket1.Ext = false
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rtpPacket1.CC = 0
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rtpPacket1.Marker = true
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rtpPacket1.PayloadType = 0xE3
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rtpPacket1.SequenceNumber = 1
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rtpPacket1.Timestamp = 200
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rtpPacket1.SyncSource = 0
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rtpPacket1.CSRC = nil
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rtpPacket1.ExtHeader = 0
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rtpPacket1.ExtData = nil
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nalFragment := new(NALFragment)
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nalFragment.ThreeNUBs = 0x02
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nalFragment.FragmentType = byte(28)
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nalFragment.Start = true
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nalFragment.End = false
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nalFragment.Reserved = true
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nalFragment.FiveNUBs = 0x03
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nalFragment.Data = make([]byte,98)
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rand.Seed(int64(time.Now().Nanosecond()))
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for i := range nalFragment.Data {
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nalFragment.Data[i] = byte(rand.Intn(255))
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fmt.Printf(" %v ", nalFragment.Data[i])
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}
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rtpPacket1.Payload = make([]byte,100)
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copy(rtpPacket1.Payload[:], nalFragment.ToByteSlice())
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fmt.Println(rtpPacket1.Payload)
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converter.InputChan<-rtpPacket1
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// Create second rtp packet
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rtpPacket2 := new(RtpPacket)
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rtpPacket2.Version = 2
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rtpPacket2.Padding = false
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rtpPacket2.Ext = false
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rtpPacket2.CC = 0
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rtpPacket2.Marker = false
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rtpPacket2.PayloadType = 0xE3
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rtpPacket2.SequenceNumber = 2
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rtpPacket2.Timestamp = 300
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rtpPacket2.SyncSource = 0
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rtpPacket2.CSRC = nil
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rtpPacket2.ExtHeader = 0
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rtpPacket2.ExtData = nil
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nalFragment = new(NALFragment)
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nalFragment.ThreeNUBs = 0x02
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nalFragment.FragmentType = byte(28)
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nalFragment.Start = false
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nalFragment.End = true
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nalFragment.Reserved = true
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nalFragment.FiveNUBs = 0x03
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nalFragment.Data = make([]byte,198)
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for i := range nalFragment.Data {
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nalFragment.Data[i] = byte(rand.Intn(255))
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}
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rtpPacket2.Payload = make([]byte,200)
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copy(rtpPacket2.Payload[:], nalFragment.ToByteSlice())
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converter.InputChan<-rtpPacket2
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// Create first expected tsPacket
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afField := make([]byte, 2)
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afField[0] = byte(1)
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afField[1] = byte(0)
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pesPkt := new(PESPacket)
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pesPkt.StreamID = 0xE0
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pesPkt.Length = uint16( 3 + 300 )
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pesPkt.ScramblingControl = 0
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pesPkt.Priority = true
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pesPkt.DAI = false
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pesPkt.Copyright = false
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pesPkt.Original = true
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pesPkt.PDI = 0
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pesPkt.ESCR = false
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pesPkt.ESRate = false
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pesPkt.DSMTrickMode = false
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pesPkt.ACI = false
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pesPkt.CRC = false
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pesPkt.Ext = false
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pesPkt.HeaderLength = 0
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pesPkt.Data = make([]byte,300)
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for ii:=0; ii<100; ii++ {
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pesPkt.Data[ii] = rtpPacket1.Payload[ii]
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}
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for ii:=100; ii <300; ii++ {
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pesPkt.Data[ii] = rtpPacket2.Payload[ii-100]
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}
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pesPacketAsByteSlice := pesPkt.ToByteSlice()
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data := make([]byte, 182)
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copy(data[:],pesPacketAsByteSlice[:182])
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expectedPkt1 := MpegTsPacket{
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byte(0x47), // sync byte
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bool(false), // TEI
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bool(true), // PUSI
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bool(false), // Priority
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uint16(256), // PID
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byte(0), // TSC
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byte(3), // AFC
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byte(0), // CC
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afField, // AF
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data,
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}
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data = make([]byte, len(pesPacketAsByteSlice)-182)
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copy(data[:], pesPacketAsByteSlice[182:])
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afField = make([]byte, 2+(182-(len(pesPacketAsByteSlice)-182)))
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afField[0] = byte(1+(182-(len(pesPacketAsByteSlice)-182)))
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afField[1] = byte(0)
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for ii := 2; ii < len(afField); ii++ {
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afField[ii] = 0xFF
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}
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expectedPkt2 := MpegTsPacket{
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byte(0x47), // sync byte
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bool(false), // TEI
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bool(false), // PUSI
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bool(false), // Priority
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uint16(256), // PID
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byte(0), // TSC
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byte(3), // AFC
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byte(1), // CC
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afField, // AF
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data,
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}
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// Now let's get our two Ts packets from the converter and see if they're G
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tsPacket := <-converter.TsChan
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expectedPkt1AsByteSlice := expectedPkt1.ToByteSlice()
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tsPacketAsByteSlice := tsPacket.ToByteSlice()
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for ii := range expectedPkt1AsByteSlice {
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if expectedPkt1AsByteSlice[ii] != tsPacketAsByteSlice[ii] {
|
|
t.Errorf("Not equal! Byte: %v Exptected: %v Got: %v\n",ii,
|
|
expectedPkt1AsByteSlice[ii],tsPacketAsByteSlice[ii])
|
|
}
|
|
}
|
|
fmt.Printf("Expected packet: %v\n", expectedPkt1.ToByteSlice())
|
|
fmt.Printf("Got packet: %v\n", tsPacket.ToByteSlice())
|
|
tsPacket = <-converter.TsChan
|
|
expectedPkt2AsByteSlice := expectedPkt2.ToByteSlice()
|
|
tsPacketAsByteSlice = tsPacket.ToByteSlice()
|
|
for ii := range expectedPkt2AsByteSlice {
|
|
if expectedPkt2AsByteSlice[ii] != tsPacketAsByteSlice[ii] {
|
|
t.Errorf("Not equal! Byte: %v Exptected: %v Got: %v\n",ii,
|
|
expectedPkt2AsByteSlice[ii],tsPacketAsByteSlice[ii])
|
|
}
|
|
}
|
|
fmt.Printf("Expected packet: %v\n", expectedPkt2.ToByteSlice())
|
|
fmt.Printf("Got packet: %v\n", tsPacket.ToByteSlice())
|
|
}
|