smf

README

smf

Various tools to deal with Standard MIDI Files (SMF).

Note: If you are reading this on Github, please note that the repo has moved to Gitlab (gitlab.com/gomidi/smf) and this is only a mirror.

Installation

go get -u gitlab.com/gomidi/smf/cmd/smf

Usage

smf help

extract lyrics from an SMF file

smf lyrics -f='your-midi-file.mid'

documentation:

smf help lyrics

set tempo based on a metronome track

set the tempo based on the metronome beats on the second track

smf metro -f='input.mid' -o='ouput.mid' -t=1

documentation:

smf help metro

see content of SMF file

smf cat -f='your-midi-file.mid'

documentation:

smf help cat

Documentation

Index

• func KeyToNote(key uint8) string
• func ShowMessage(msg midi.Message) string
• type Bar
  • func (b *Bar) AddPosition() *Position
  • func (b *Bar) Columns() []string
  • func (b *Bar) EndPos() uint64
  • func (b *Bar) Length() uint64
  • func (b *Bar) SetMessageByRelTicks(ticks uint64, trackNo uint16, msg midi.Message)
  • func (b *Bar) SortPositions()
• type Position
  • func (p *Position) AbsTicks() uint64
  • func (p *Position) AddMessage(track uint16, msg midi.Message)
  • func (p *Position) GetMessage(track uint16) *TrackMessage
  • func (p *Position) SetMessage(track uint16, msg midi.Message)
  • func (p *Position) WithinFraction(ticks uint64) bool
• type Positions
  • func (p Positions) Len() int
  • func (p Positions) Less(a, b int) bool
  • func (p Positions) Swap(a, b int)
• type Song
  • func New() *Song
  • func ReadSMF(file string) (*Song, error)
  • func (s *Song) AddBar(pos uint64, num, denom uint8) *Bar
  • func (s *Song) AddTrack(withContent bool, channel int8) *Track
  • func (s *Song) BarLines() string
  • func (s *Song) LastTrack() *Track
  • func (s *Song) NoOfContentTracks() (no uint16)
  • func (s *Song) RenumberBars()
  • func (s *Song) RenumberTracks()
  • func (s *Song) Save(file string) error
  • func (s *Song) TrackWidth(i int) uint8
• type TempoChange
• type TempoChanges
  • func (p TempoChanges) Len() int
  • func (p TempoChanges) Less(a, b int) bool
  • func (p TempoChanges) Swap(a, b int)
• type TimeSig
• type TimeSigs
  • func (p TimeSigs) Len() int
  • func (p TimeSigs) Less(a, b int) bool
  • func (p TimeSigs) Swap(a, b int)
• type Track
• type TrackMessage

Functions

func KeyToNote

func KeyToNote(key uint8) string

func ShowMessage

func ShowMessage(msg midi.Message) string

Types

type Bar

type Bar struct {
	Song      *Song
	No        uint16
	TimeSig   [2]uint8
	Positions Positions
	AbsPos    uint64
}

func (*Bar) AddPosition

func (b *Bar) AddPosition() *Position

func (*Bar) Columns

func (b *Bar) Columns() []string

func (*Bar) EndPos

func (b *Bar) EndPos() uint64

func (*Bar) Length

func (b *Bar) Length() uint64

func (*Bar) SetMessageByRelTicks

func (b *Bar) SetMessageByRelTicks(ticks uint64, trackNo uint16, msg midi.Message)

func (*Bar) SortPositions

func (b *Bar) SortPositions()

type Position

type Position struct {
	Bar      *Bar
	Comment  string
	Mark     string
	Beat     uint8
	Tempo    float32
	Fraction [2]float64
	Messages []*TrackMessage
}

func (*Position) AbsTicks

func (p *Position) AbsTicks() uint64

func (*Position) AddMessage

func (p *Position) AddMessage(track uint16, msg midi.Message)

func (*Position) GetMessage

func (p *Position) GetMessage(track uint16) *TrackMessage

func (*Position) SetMessage

func (p *Position) SetMessage(track uint16, msg midi.Message)

func (*Position) WithinFraction

func (p *Position) WithinFraction(ticks uint64) bool

type Positions

type Positions []*Position

func (Positions) Len

func (p Positions) Len() int

func (Positions) Less

func (p Positions) Less(a, b int) bool

func (Positions) Swap

func (p Positions) Swap(a, b int)

type Song

type Song struct {
	CopyRight  string
	Properties map[string]string
	Bars       []*Bar
	Tracks     []*Track
	// contains filtered or unexported fields
}

func New

func New() *Song

func ReadSMF

func ReadSMF(file string) (*Song, error)

func (*Song) AddBar

func (s *Song) AddBar(pos uint64, num, denom uint8) *Bar

func (*Song) AddTrack

func (s *Song) AddTrack(withContent bool, channel int8) *Track

func (*Song) BarLines

func (s *Song) BarLines() string

func (*Song) LastTrack

func (s *Song) LastTrack() *Track

func (*Song) NoOfContentTracks

func (s *Song) NoOfContentTracks() (no uint16)

func (*Song) RenumberBars

func (s *Song) RenumberBars()

func (*Song) RenumberTracks

func (s *Song) RenumberTracks()

func (*Song) Save

func (s *Song) Save(file string) error

func (*Song) TrackWidth

func (s *Song) TrackWidth(i int) uint8

type TempoChange

type TempoChange struct {
	AbsPos   uint64
	TempoBPM float64
}

type TempoChanges

type TempoChanges []*TempoChange

func (TempoChanges) Len

func (p TempoChanges) Len() int

func (TempoChanges) Less

func (p TempoChanges) Less(a, b int) bool

func (TempoChanges) Swap

func (p TempoChanges) Swap(a, b int)

type TimeSig

type TimeSig struct {
	AbsPos uint64
	Num    uint8
	Denom  uint8
}

type TimeSigs

type TimeSigs []*TimeSig

func (TimeSigs) Len

func (p TimeSigs) Len() int

func (TimeSigs) Less

func (p TimeSigs) Less(a, b int) bool

func (TimeSigs) Swap

func (p TimeSigs) Swap(a, b int)

type Track

type Track struct {
	Song        *Song
	No          uint16
	Channel     int8 // -1 == not defined
	Name        string
	Instrument  string
	Solo        bool
	Mute        bool
	RecordArm   bool
	WithContent bool
	External    bool // for non editable track
}

type TrackMessage

type TrackMessage struct {
	TrackNo  uint16
	AbsPos   uint64
	Message  midi.Message
	Position *Position
}