mirror of https://bitbucket.org/ausocean/av.git
79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
/*
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NAME
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PES.go -
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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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PES.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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type PESPacket struct {
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StreamID byte
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Length uint16
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ScramblingControl byte
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Priority bool
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DAI bool // data alginment indicator
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Copyright bool
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Original bool
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PDI byte // PTS DTS indicator
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ESCR bool
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ESRate bool
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DSMTrickMode bool
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ACI bool // additional copy info flag
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CRC bool
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Ext bool
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HeaderLength byte
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OptFields []byte
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Stuffing []byte
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Data []byte
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}
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func (p *PESPacket) ToByteSlice() (output []byte) {
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output = make([]byte, 6+p.Length)
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output[0] = 0x00
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output[1] = 0x00
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output[2] = 0x01
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output[3] = p.StreamID
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output[4] = byte(( p.Length & 0xFF00 ) >> 8)
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output[5] = byte( p.Length & 0x00FF )
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output[6] = 0x2 << 6 |
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p.ScramblingControl << 4 |
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boolToByte(p.Priority) << 3 |
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boolToByte(p.DAI) << 2 |
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boolToByte(p.Copyright) << 1 |
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boolToByte(p.Original)
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output[7] = p.PDI << 6 |
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boolToByte(p.ESCR) << 5 |
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boolToByte(p.ESRate) << 4 |
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boolToByte(p.DSMTrickMode) << 3 |
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boolToByte(p.ACI) << 2 |
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boolToByte(p.CRC) << 1 |
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boolToByte(p.Ext)
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output[8] = p.HeaderLength
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optFieldsOffset := 9+len(p.OptFields)
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copy(output[9:optFieldsOffset],p.OptFields)
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copy(output[optFieldsOffset:optFieldsOffset + len(p.Stuffing)],p.Stuffing)
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dataOffset := 9+int(p.HeaderLength)
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copy(output[dataOffset:dataOffset+len(p.Data)],p.Data)
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return
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}
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