utils

Documentation

Index

• Variables
• func ClearBitU8(n uint8, pos uint8) uint8
• func ParsePitchWheelVals(b1 byte, b2 byte) (relative int16, absolute uint16)
• func ParseStatus(b byte) (messageType uint8, messageChannel uint8)
• func ParseTwoUint7(b1, b2 byte) (uint8, uint8)
• func ParseUint7(b byte) uint8
• func ReadByte(rd io.Reader) (byte, error)
• func ReadNBytes(n int, rd io.Reader) ([]byte, error)
• func ReadText(rd io.Reader) (string, error)
• func ReadUint16(rd io.Reader) (uint16, error)
• func ReadUint24(rd io.Reader) (uint32, error)
• func ReadUint32(rd io.Reader) (uint32, error)
• func ReadVarLength(reader io.Reader) (uint32, error)
• func ReadVarLengthData(reader io.Reader) ([]byte, error)
• func VlqDecode(source []byte) (num uint32)
• func VlqEncode(n uint32) (out []byte)

Variables

var ErrUnexpectedEOF = fmt.Errorf("Unexpected End of File found.")

ErrUnexpectedEOF is returned, when an unexspected end of file is reached.

Functions

func ClearBitU8

func ClearBitU8(n uint8, pos uint8) uint8

ClearBitU8 clears the bit at position pos within n

func ParsePitchWheelVals

func ParsePitchWheelVals(b1 byte, b2 byte) (relative int16, absolute uint16)

func ParseStatus

func ParseStatus(b byte) (messageType uint8, messageChannel uint8)

ParseStatus parses the status byte and returns type and channel

This is a slightly modified variant of the readStatusByte function from Joe Wass. See the file midi_functions.go for the original.

func ParseTwoUint7

func ParseTwoUint7(b1, b2 byte) (uint8, uint8)

func ParseUint7

func ParseUint7(b byte) uint8

func ReadByte

func ReadByte(rd io.Reader) (byte, error)

ReadByte reads a byte from the reader

func ReadNBytes

func ReadNBytes(n int, rd io.Reader) ([]byte, error)

ReadNBytes reads n bytes from the reader

func ReadText

func ReadText(rd io.Reader) (string, error)

func ReadUint16

func ReadUint16(rd io.Reader) (uint16, error)

ReadUint16 reads a 2-byte 16 bit integer from a Reader. It returns the 16-bit value and an error. This is a slightly modified variant of the parseUint16 function from Joe Wass. See the file midi_functions.go for the original.

func ReadUint24

func ReadUint24(rd io.Reader) (uint32, error)

ReadUint24 parse a 3-byte 24 bit integer from a Reader. It returns the 32-bit value and an error. This is a slightly modified variant of the parseUint24 function from Joe Wass. See the file midi_functions.go for the original.

func ReadUint32

func ReadUint32(rd io.Reader) (uint32, error)

ReadUint32 parse a 4-byte 32 bit integer from a Reader. It returns the 32-bit value and an error. This is a slightly modified variant of the parseUint32 function from Joe Wass. See the file midi_functions.go for the original.

func ReadVarLength

func ReadVarLength(reader io.Reader) (uint32, error)

ReadVarLength reads a variable length value from a Reader. It returns the [up to] 32-bit value and an error. This is a slightly modified variant of the parseVarLength function from Joe Wass. See the file midi_functions.go for the original.

func ReadVarLengthData

func ReadVarLengthData(reader io.Reader) ([]byte, error)

ReadVarLengthData reads data that is prefixed by a varLength that tells the length of the data

This is a slightly modified variant of the parseText function from Joe Wass. See the file midi_functions.go for the original.

func VlqDecode

func VlqDecode(source []byte) (num uint32)

Decode decodes a variable length quantity

func VlqEncode

func VlqEncode(n uint32) (out []byte)

Encode encodes the given value as variable length quantity