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refactor(tracker): put all recording data into struct Recording

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This commit is contained in:
5684185+vsariola@users.noreply.github.com
2023-10-19 23:02:21 +03:00
parent 453f45c48a
commit d342fb860b
5 changed files with 61 additions and 63 deletions
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43
tracker/recording.go
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@ -1,20 +1,31 @@
package tracker
import (
"bytes"
"errors"
"math"
"github.com/vsariola/sointu"
)
type (
recordingNote struct {
note byte
startRow int
endRow int
}
)
type Recording struct {
BPM float64 // vsts allow bpms as floats so for accurate reconstruction, keep it as float for recording
Events []MIDINoteEvent
TotalFrames int
}
func RecordingToSong(patch sointu.Patch, rowsPerBeat, rowsPerPattern int, recording PlayerRecordedMessage) sointu.Song {
type recordingNote struct {
note byte
startRow int
endRow int
}
var ErrInvalidRows = errors.New("rows per beat and rows per pattern must be greater than 1")
func (recording *Recording) Song(patch sointu.Patch, rowsPerBeat, rowsPerPattern int) (sointu.Song, error) {
if rowsPerBeat <= 1 || rowsPerPattern <= 1 {
return sointu.Song{}, ErrInvalidRows
}
channelNotes := make([][]recordingNote, 0)
// find the length of each note and assign it to its respective channel
for i, m := range recording.Events {
@ -109,7 +120,7 @@ func RecordingToSong(patch sointu.Patch, rowsPerBeat, rowsPerPattern int, record
continue L
}
for l, p2 := range patterns {
if testEq(p, p2) {
if bytes.Equal(p, p2) {
order[k] = l
continue L
}
@ -125,21 +136,9 @@ func RecordingToSong(patch sointu.Patch, rowsPerBeat, rowsPerPattern int, record
}
}
score := sointu.Score{Length: songLengthPatterns, RowsPerPattern: rowsPerPattern, Tracks: songTracks}
return sointu.Song{BPM: int(recording.BPM + 0.5), RowsPerBeat: rowsPerBeat, Score: score, Patch: patch.Copy()}
return sointu.Song{BPM: int(recording.BPM + 0.5), RowsPerBeat: rowsPerBeat, Score: score, Patch: patch.Copy()}, nil
}
func frameToRow(BPM float64, rowsPerBeat, frame int) int {
return int(float64(frame)/44100/60*BPM*float64(rowsPerBeat) + 0.5)
}
func testEq(a, b []byte) bool {
if len(a) != len(b) {
return false
}
for i := range a {
if a[i] != b[i] {
return false
}
}
return true
}