mirror of https://bitbucket.org/ausocean/av.git
167 lines
3.6 KiB
Go
167 lines
3.6 KiB
Go
/*
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NAME
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std.go
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DESCRIPTION
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See Readme.md
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AUTHOR
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Saxon Milton <saxon@ausocean.org>
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LICENSE
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std.go is Copyright (C) 2018 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 http://www.gnu.org/licenses.
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*/
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package psi
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const (
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pmtTimeGpsPil = 44
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)
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// Some common manifestations of PSI
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var (
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// PSI struct to represent basic pat
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StdPat = PSI{
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Pf: 0x00,
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Tid: 0x00,
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Ssi: true,
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Pb: false,
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Sl: uint16(0x0d),
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Tss: &TSS{
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Tide: uint16(0x01),
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V: 0,
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Cni: true,
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Sn: 0,
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Lsn: 0,
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Sd: &PAT{
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Pn: uint16(0x01),
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Pmpid: uint16(0x1000),
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},
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},
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}
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// PSI struct to represent basic pmt without descriptors for time and gps
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StdPmt = PSI{
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Pf: 0x00,
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Tid: 0x02,
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Ssi: true,
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Sl: uint16(0x12),
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Tss: &TSS{
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Tide: uint16(0x01),
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V: 0,
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Cni: true,
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Sn: 0,
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Lsn: 0,
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Sd: &PMT{
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Pcrpid: 0x0100, // wrong
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Pil: 0,
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Essd: &ESSD{
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St: 0x1b,
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Epid: 0x0100,
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Esil: 0x00,
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},
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},
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},
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}
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// Std pmt with time and gps descriptors, time and gps fields are zerod out
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StdPmtTimeGps = PSI{
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Pf: 0x00,
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Tid: 0x02,
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Ssi: true,
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Sl: uint16(0x12),
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Tss: &TSS{
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Tide: uint16(0x01),
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V: 0,
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Cni: true,
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Sn: 0,
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Lsn: 0,
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Sd: &PMT{
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Pcrpid: 0x0100,
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Pil: pmtTimeGpsPil,
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Pd: []Desc{
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Desc{
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Dt: byte(timeDescTag),
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Dl: byte(timeDataSize),
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Dd: make([]byte, timeDataSize),
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},
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Desc{
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Dt: byte(gpsDescTag),
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Dl: byte(gpsDataSize),
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Dd: make([]byte, gpsDataSize),
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},
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},
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Essd: &ESSD{
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St: 0x1b,
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Epid: 0x0100,
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Esil: 0x00,
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},
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},
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},
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}
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)
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// Std PSI in bytes form
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var (
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StdPatBytes = []byte{
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0x00, // pointer
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// ---- section included in data sent to CRC32 during check
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// table header
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0x00, // table id
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0xb0, // section syntax indicator:1|private bit:1|reserved:2|section length:2|more bytes...:2
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0x0d, // more bytes...
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// syntax section
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0x00, 0x01, // table id extension
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0xc1, // reserved bits:2|version:5|use now:1 1100 0001
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0x00, // section number
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0x00, // last section number
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// table data
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0x00, 0x01, // Program number
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0xf0, 0x00, // reserved:3|program map PID:13
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// 0x2a, 0xb1, 0x04, 0xb2, // CRC
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// ----
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}
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StdPmtBytes = []byte{
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0x00, // pointer
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// ---- section included in data sent to CRC32 during check
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// table header
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0x02, // table id
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0xb0, // section syntax indicator:1|private bit:1|reserved:2|section length:2|more bytes...:2
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0x12, // more bytes...
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// syntax section
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0x00, 0x01, // table id extension
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0xc1, // reserved bits:3|version:5|use now:1
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0x00, // section number
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0x00, // last section number
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// table data
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0xe1, 0x00, // reserved:3|PCR PID:13
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0xf0, 0x00, // reserved:4|unused:2|program info length:10
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// No program descriptors since program info length is 0.
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// elementary stream info data
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0x1b, // stream type
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0xe1, 0x00, // reserved:3|elementary PID:13
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0xf0, 0x00, // reserved:4|unused:2|ES info length:10
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// No elementary stream descriptors since ES info length is 0.
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// 0x15, 0xbd, 0x4d, 0x56, // CRC
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// ----
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}
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)
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