mirror of https://bitbucket.org/ausocean/av.git
Merge branch 'master' into nal-extension-types
This commit is contained in:
Saxon
commit
03813d5a89
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@ -262,7 +262,7 @@ func run(cfg revid.Config) {
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ns, err := netsender.New(log, nil, readPin, nil)
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if err != nil {
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log.Log(logger.Fatal, pkg+"could not initialise netsender client")
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log.Log(logger.Fatal, pkg+"could not initialise netsender client: "+err.Error())
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}
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var vs int
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@ -36,6 +36,87 @@ const (
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naMbPartPredMode
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)
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// fieldReader provides methods for reading bool and int fields from a
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// bits.BitReader with a sticky error that may be checked after a series of
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// parsing read calls.
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type fieldReader struct {
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e error
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br *bits.BitReader
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}
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// newFieldReader returns a new fieldReader.
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func newFieldReader(br *bits.BitReader) fieldReader {
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return fieldReader{br: br}
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}
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// readBitsInt returns an int from reading n bits from br. If we have an error
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// already, we do not continue with the read.
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func (r fieldReader) readBits(n int) uint64 {
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if r.e != nil {
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return 0
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}
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var b uint64
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b, r.e = r.br.ReadBits(n)
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return b
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}
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// readUe parses a syntax element of ue(v) descriptor, i.e. an unsigned integer
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// Exp-Golomb-coded element using method as specified in section 9.1 of ITU-T
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// H.264 and return as an int. The read does not happen if the fieldReader
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// has a non-nil error.
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func (r fieldReader) readUe() int {
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if r.e != nil {
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return 0
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}
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var i int
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i, r.e = readUe(r.br)
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return i
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}
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// readTe parses a syntax element of te(v) descriptor i.e, truncated
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// Exp-Golomb-coded syntax element using method as specified in section 9.1
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// and returns as an int. The read does not happen if the fieldReader
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// has a non-nil error.
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func (r fieldReader) readTe(x uint) int {
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if r.e != nil {
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return 0
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}
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var i int
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i, r.e = readTe(r.br, x)
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return i
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}
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// readSe parses a syntax element with descriptor se(v), i.e. a signed integer
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// Exp-Golomb-coded syntax element, using the method described in sections
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// 9.1 and 9.1.1 and returns as int. The read does not happen if the fieldReader
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// has a non-nil error.
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func (r fieldReader) readSe() int {
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if r.e != nil {
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return 0
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}
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var i int
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i, r.e = readSe(r.br)
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return i
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}
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// readMe parses a syntax element of me(v) descriptor, i.e. mapped
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// Exp-Golomb-coded element, using methods described in sections 9.1 and 9.1.2
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// and returns as int. The read does not happen if the fieldReader has a
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// non-nil error.
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func (r fieldReader) readMe(chromaArrayType uint, mpm mbPartPredMode) int {
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if r.e != nil {
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return 0
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}
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var i uint
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i, r.e = readMe(r.br, chromaArrayType, mpm)
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return int(i)
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}
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// err returns the fieldReader's error e.
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func (r fieldReader) err() error {
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return r.e
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}
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// readUe parses a syntax element of ue(v) descriptor, i.e. an unsigned integer
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// Exp-Golomb-coded element using method as specified in section 9.1 of ITU-T H.264.
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//
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@ -33,6 +33,7 @@ import (
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"fmt"
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"github.com/Comcast/gots/packet"
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gotspsi "github.com/Comcast/gots/psi"
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"github.com/pkg/errors"
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"bitbucket.org/ausocean/av/container/mts/meta"
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@ -592,3 +593,81 @@ func SegmentForMeta(d []byte, key, val string) ([][]byte, error) {
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return res, nil
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}
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// pid returns the packet identifier for the given packet.
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func pid(p []byte) uint16 {
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return uint16(p[1]&0x1f)<<8 | uint16(p[2])
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}
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// Programs returns a map of program numbers and corresponding PMT PIDs for a
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// given MPEG-TS PAT packet.
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func Programs(p []byte) (map[uint16]uint16, error) {
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pat, err := gotspsi.NewPAT(p)
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if err != nil {
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return nil, err
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}
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return pat.ProgramMap(), nil
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}
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// Streams returns elementary streams defined in a given MPEG-TS PMT packet.
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// A gotspsi.PmtElementaryStream will give stream type from
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// gotspsi.PmtElementaryStream.StreamType() and PID from
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// gotspsi.PmtElementaryStream.ElementaryPid().
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//
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// PmtStreamTypes from gots/psi are defined as follows:
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// PmtStreamTypeMpeg2VideoH262 uint8 = 2 // H262
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// PmtStreamTypeMpeg4Video uint8 = 27 // H264
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// PmtStreamTypeMpeg4VideoH264 uint8 = 27 // H264
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// PmtStreamTypeMpeg4VideoH265 uint8 = 36 // H265
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// PmtStreamTypeAac uint8 = 15 // AAC
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// PmtStreamTypeAc3 uint8 = 129 // DD
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// PmtStreamTypeEc3 uint8 = 135 // DD+
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// PmtStreamTypeScte35 uint8 = 134 // SCTE-35
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func Streams(p []byte) ([]gotspsi.PmtElementaryStream, error) {
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pmt, err := gotspsi.NewPMT(p)
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if err != nil {
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return nil, err
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}
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return pmt.ElementaryStreams(), nil
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}
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// MediaStreams retrieves the PmtElementaryStreams from the given PSI. This
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// function currently assumes that PSI contain a PAT followed by a PMT directly
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// after. We also assume that this MPEG-TS stream contains just one program,
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// but this program may contain different streams, i.e. a video stream + audio
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// stream.
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func MediaStreams(p []byte) ([]gotspsi.PmtElementaryStream, error) {
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pat := p[:PacketSize]
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pmt := p[PacketSize : 2*PacketSize]
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if pid(pat) != PatPid {
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return nil, errors.New("first packet is not a PAT")
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}
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m, err := Programs(pat)
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if err != nil {
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return nil, errors.Wrap(err, "could not get programs from PAT")
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}
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if len(m) == 0 {
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return nil, errors.New("no programs contained in PAT")
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}
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if len(m) > 1 {
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return nil, errors.New("more than one program not yet supported")
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}
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var v uint16
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for _, v = range m {
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}
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if pid(pmt) != v {
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return nil, errors.New("second packet is not desired PMT")
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}
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s, err := Streams(pmt)
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if err != nil {
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return nil, errors.Wrap(err, "could not get streams from PMT")
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}
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return s, nil
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}
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9
go.mod
9
go.mod
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@ -3,17 +3,12 @@ module bitbucket.org/ausocean/av
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go 1.12
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require (
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bitbucket.org/ausocean/iot v1.2.4
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bitbucket.org/ausocean/iot v1.2.5
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bitbucket.org/ausocean/utils v1.2.6
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github.com/BurntSushi/toml v0.3.1 // indirect
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github.com/Comcast/gots v0.0.0-20190305015453-8d56e473f0f7
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github.com/Shopify/toxiproxy v2.1.4+incompatible // indirect
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github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 // indirect
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github.com/go-audio/audio v0.0.0-20181013203223-7b2a6ca21480
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github.com/go-audio/wav v0.0.0-20181013172942-de841e69b884
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github.com/mewkiz/flac v1.0.5
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github.com/sergi/go-diff v1.0.0 // indirect
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github.com/pkg/errors v0.8.1
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github.com/yobert/alsa v0.0.0-20180630182551-d38d89fa843e
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gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
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gopkg.in/yaml.v2 v2.2.2 // indirect
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)
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11
go.sum
11
go.sum
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@ -1,5 +1,8 @@
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bitbucket.org/ausocean/iot v1.2.4 h1:M/473iQ0d4q+76heerjAQuqXzQyc5dZ3F7Bfuq6X7q4=
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bitbucket.org/ausocean/iot v1.2.4/go.mod h1:5HVLgPHccW2PxS7WDUQO6sKWMgk3Vfze/7d5bHs8EWU=
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bitbucket.org/ausocean/iot v1.2.5 h1:udD5X4oXUuKwdjO7bcq4StcDdjP8fJa2L0FnJJwF+6Q=
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bitbucket.org/ausocean/iot v1.2.5/go.mod h1:dOclxXkdxAQGWO7Y5KcP1wpNfxg9oKUA2VqjJ3Le4RA=
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bitbucket.org/ausocean/utils v1.2.4/go.mod h1:5JIXFTAMMNl5Ob79tpZfDCJ+gOO8rj7v4ORj56tHZpw=
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bitbucket.org/ausocean/utils v1.2.6 h1:JN66APCV+hu6GebIHSu2KSywhLym4vigjSz5+fB0zXc=
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bitbucket.org/ausocean/utils v1.2.6/go.mod h1:uXzX9z3PLemyURTMWRhVI8uLhPX4uuvaaO85v2hcob8=
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github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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@ -8,16 +11,21 @@ github.com/Comcast/gots v0.0.0-20190305015453-8d56e473f0f7 h1:LdOc9B9Bj6LEsKiXSh
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github.com/Comcast/gots v0.0.0-20190305015453-8d56e473f0f7/go.mod h1:O5HA0jgDXkBp+jw0770QNBT8fsRJCbH7JXmM7wxLUBU=
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github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=
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github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
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github.com/adrianmo/go-nmea v1.1.1-0.20190109062325-c448653979f7/go.mod h1:HHPxPAm2kmev+61qmkZh7xgZF/7qHtSpsWppip2Ipv8=
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github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ=
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github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/go-audio/aiff v0.0.0-20180403003018-6c3a8a6aff12/go.mod h1:AMSAp6W1zd0koOdX6QDgGIuBDTUvLa2SLQtm7d9eM3c=
|
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github.com/go-audio/audio v0.0.0-20180206231410-b697a35b5608/go.mod h1:6uAu0+H2lHkwdGsAY+j2wHPNPpPoeg5AaEFh9FlA+Zs=
|
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github.com/go-audio/audio v0.0.0-20181013203223-7b2a6ca21480 h1:4sGU+UABMMsRJyD+Y2yzMYxq0GJFUsRRESI0P1gZ2ig=
|
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github.com/go-audio/audio v0.0.0-20181013203223-7b2a6ca21480/go.mod h1:6uAu0+H2lHkwdGsAY+j2wHPNPpPoeg5AaEFh9FlA+Zs=
|
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github.com/go-audio/wav v0.0.0-20181013172942-de841e69b884 h1:2TaXIaVA4ff/MHHezOj83tCypALTFAcXOImcFWNa3jw=
|
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github.com/go-audio/wav v0.0.0-20181013172942-de841e69b884/go.mod h1:UiqzUyfX0zs3pJ/DPyvS5v8sN6s5bXPUDDIVA5v8dks=
|
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github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
|
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github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4/go.mod h1:2RvX5ZjVtsznNZPEt4xwJXNJrM3VTZoQf7V6gk0ysvs=
|
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github.com/kidoman/embd v0.0.0-20170508013040-d3d8c0c5c68d/go.mod h1:ACKj9jnzOzj1lw2ETilpFGK7L9dtJhAzT7T1OhAGtRQ=
|
||||
github.com/mattetti/audio v0.0.0-20180912171649-01576cde1f21 h1:Hc1iKlyxNHp3CV59G2E/qabUkHvEwOIJxDK0CJ7CRjA=
|
||||
github.com/mattetti/audio v0.0.0-20180912171649-01576cde1f21/go.mod h1:LlQmBGkOuV/SKzEDXBPKauvN2UqCgzXO2XjecTGj40s=
|
||||
github.com/mewkiz/flac v1.0.5 h1:dHGW/2kf+/KZ2GGqSVayNEhL9pluKn/rr/h/QqD9Ogc=
|
||||
|
|
@ -29,16 +37,19 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
|
|||
github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
|
||||
github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.2.1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
github.com/yobert/alsa v0.0.0-20180630182551-d38d89fa843e h1:3NIzz7weXhh3NToPgbtlQtKiVgerEaG4/nY2skGoGG0=
|
||||
github.com/yobert/alsa v0.0.0-20180630182551-d38d89fa843e/go.mod h1:CaowXBWOiSGWEpBBV8LoVnQTVPV4ycyviC9IBLj8dRw=
|
||||
github.com/yryz/ds18b20 v0.0.0-20180211073435-3cf383a40624/go.mod h1:MqFju5qeLDFh+S9PqxYT7TEla8xeW7bgGr/69q3oki0=
|
||||
go.uber.org/atomic v1.3.2 h1:2Oa65PReHzfn29GpvgsYwloV9AVFHPDk8tYxt2c2tr4=
|
||||
go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
|
||||
go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
|
||||
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
|
||||
go.uber.org/zap v1.9.1 h1:XCJQEf3W6eZaVwhRBof6ImoYGJSITeKWsyeh3HFu/5o=
|
||||
go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
|
||||
golang.org/x/sys v0.0.0-20190305064518-30e92a19ae4a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
|
||||
|
|
|
|||
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