⬥ ID3 encoding/decoding library in Go ⬥
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package v2
import (
"io"
"github.com/Unbewohnte/id3ed/util"
)
////////////////////////////////////////////////////////////////////////////
//(ᗜˬᗜ)~⭐//Under construction//Please don`t use it in this verison//(ᗜ‸ᗜ)///
////////////////////////////////////////////////////////////////////////////
type FrameHeader struct {
ID string
FrameSize int64
Flags int
}
type Frame struct {
Header FrameHeader
Contents string
}
// Reads ID3v2.3.0 or ID3v2.4.0 frame
func ReadFrame(rs io.Reader, version uint) (*Frame, error) {
var frameHeader FrameHeader
var frame Frame
// ID
identifier, err := util.ReadToString(rs, 4)
if err != nil {
return nil, err
}
frameHeader.ID = identifier
// Size
framesizeBytes, err := util.Read(rs, 4)
if err != nil {
return nil, err
}
framesize, err := util.BytesToIntIgnoreFirstBit(framesizeBytes)
if err != nil {
return nil, err
}
frameHeader.FrameSize = framesize
// Flags
frameFlagsBytes, err := util.Read(rs, 2)
if err != nil {
return nil, err
}
frameFlags, err := util.BytesToInt(frameFlagsBytes)
if err != nil {
return nil, err
}
frameHeader.Flags = int(frameFlags)
// Body
frameContents, err := util.Read(rs, uint64(framesize))
if err != nil {
return nil, err
}
frame.Header = frameHeader
frame.Contents = string(frameContents)
return &frame, nil
}