mirror of https://bitbucket.org/ausocean/av.git
72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
package parser
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import (
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//"bitbucket.org/ausocean/av/itut"
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"../itut"
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_"fmt"
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_"time"
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)
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type h264Parser struct {
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inputBuffer []byte
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isParsing bool
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parserOutputChanRef chan []byte
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userOutputChanRef chan []byte
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inputChan chan byte
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}
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func NewH264Parser() (p *h264Parser) {
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p = new(h264Parser)
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p.isParsing = true
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p.inputChan = make(chan byte, 100000)
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return
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}
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func (p* h264Parser)Stop(){
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p.isParsing = false
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}
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func (p *h264Parser)Start(){
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go p.parse()
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}
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func (p *h264Parser)GetInputChan() chan byte {
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return p.inputChan
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}
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func (p *h264Parser)GetOutputChan() chan []byte {
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return p.userOutputChanRef
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}
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func (p *h264Parser)SetOutputChan(aChan chan []byte){
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p.parserOutputChanRef = aChan
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p.userOutputChanRef = aChan
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}
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func (p *h264Parser)parse() {
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outputBuffer := make([]byte, 0, 10000)
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searchingForEnd := false
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for p.isParsing {
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aByte := <-p.inputChan
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outputBuffer = append(outputBuffer, aByte)
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for i:=1; aByte == 0x00 && i != 4; i++ {
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aByte = <-p.inputChan
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outputBuffer = append(outputBuffer, aByte)
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if ( aByte == 0x01 && i == 2 ) || ( aByte == 0x01 && i == 3 ) {
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if searchingForEnd {
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output := append(append(itut.StartCode1(),itut.AUD()...),outputBuffer[:len(outputBuffer)-(i+1)]...)
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//time.Sleep(40*time.Millisecond)
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p.parserOutputChanRef<-output
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outputBuffer = outputBuffer[len(outputBuffer)-1-i:]
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searchingForEnd = false
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}
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aByte = <-p.inputChan
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outputBuffer = append(outputBuffer, aByte)
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if nalType := aByte & 0x1F; nalType == 1 || nalType == 5 {
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searchingForEnd = true
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}
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}
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}
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}
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}
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