diff options
Diffstat (limited to 'cmd/playsmf')
-rw-r--r-- | cmd/playsmf/main.go | 114 | ||||
-rw-r--r-- | cmd/playsmf/main_test.go | 48 | ||||
-rw-r--r-- | cmd/playsmf/testdata/ceottk-output.golden | 16 | ||||
-rw-r--r-- | cmd/playsmf/testdata/ceottk-serial.golden.bin | bin | 0 -> 32 bytes | |||
-rw-r--r-- | cmd/playsmf/testdata/ceottk.mid | bin | 0 -> 209 bytes |
5 files changed, 178 insertions, 0 deletions
diff --git a/cmd/playsmf/main.go b/cmd/playsmf/main.go new file mode 100644 index 0000000..7b55ff3 --- /dev/null +++ b/cmd/playsmf/main.go @@ -0,0 +1,114 @@ +package main + +import ( + "container/list" + "flag" + "fmt" + "os" + "time" + + "gitlab.com/gomidi/midi" + "gitlab.com/gomidi/midi/mid" + "gitlab.com/gomidi/midi/midimessage" + "gitlab.com/gomidi/midi/smf" + "go.terinstock.com/midifi/pkg/ttymididrv" +) + +var ( + drv mid.Driver + midiSerial string +) + +func init() { + flag.StringVar(&midiSerial, "com", "", "The serial port of the MIDI synth") +} + +func main() { + flag.Parse() + drv = ttymididrv.New(midiSerial, 38400) + defer drv.Close() + + outs, err := drv.Outs() + if err != nil { + fmt.Printf("err: %v\n", err) + os.Exit(-1) + } + out := outs[0] + + err = out.Open() + if err != nil { + fmt.Printf("err: %v\n", err) + os.Exit(-1) + } + defer out.Close() + + if flag.NArg() == 0 { + flag.Usage() + os.Exit(-1) + } + + f, err := os.Open(flag.Arg(0)) + if err != nil { + fmt.Println("unable to load SMF file") + os.Exit(-2) + } + defer f.Close() + + fmt.Printf("file: %s\n", flag.Arg(0)) + + mf := mid.NewReader(mid.NoLogger()) + mf.SMFHeader = func(header smf.Header) { + fmt.Printf("file format: %s\n", header.Format.String()) + fmt.Printf("number of tracks: %d\n", header.NumTracks) + fmt.Printf("time format: %s\n", header.TimeFormat.String()) + fmt.Println("===========") + } + events := &list.List{} + mf.Msg.Each = func(pos *mid.Position, msg midi.Message) { + addEvent(events, Event{track: pos.Track, abs: pos.AbsoluteTicks, msg: msg}) + } + mf.ReadSMF(f) + + w := mid.WriteTo(out) + + var lastDur time.Duration + for event := events.Front(); event != nil; event = event.Next() { + dur := *mf.TimeAt(event.Value.(Event).abs) + if lastDur != dur { + <-time.After(dur - lastDur) + lastDur = dur + } + + msg := event.Value.(Event).msg + if midimessage.IsLive(msg) { + fmt.Printf("%s\n", msg.String()) + w.Write(msg) + } + } +} + +type Event struct { + track int16 + abs uint64 + msg midi.Message +} + +func addEvent(l *list.List, evt Event) { + if l.Front() == nil { + l.PushBack(evt) + return + } + + for cur := l.Front(); cur != nil; cur = cur.Next() { + peek := cur.Next() + if peek == nil { + l.InsertAfter(evt, cur) + return + } + + if peek.Value.(Event).abs >= evt.abs { + l.InsertAfter(evt, cur) + return + } + } +} diff --git a/cmd/playsmf/main_test.go b/cmd/playsmf/main_test.go new file mode 100644 index 0000000..68ee28f --- /dev/null +++ b/cmd/playsmf/main_test.go @@ -0,0 +1,48 @@ +package main + +import ( + "fmt" + "io/ioutil" + "os" + "os/exec" + "testing" + + "github.com/pkg/term/termios" + "gotest.tools/golden" +) + +func TestMain(m *testing.M) { + switch os.Getenv("GOTESTMODE") { + case "main": + // run the normal main function + main() + default: + os.Exit(m.Run()) + } +} + +func TestCLI(t *testing.T) { + pty, tty, err := termios.Pty() + if err != nil { + t.Fatal(err) + } + defer pty.Close() + + cmd := exec.Command(os.Args[0], "-com", tty.Name(), "./testdata/ceottk.mid") + cmd.Env = append(os.Environ(), "GOTESTMODE=main") + + output, err := cmd.Output() + if err != nil { + fmt.Printf("output: %s\n", string(output)) + t.Fatal(err) + } + + tty.Close() + b, err := ioutil.ReadAll(pty) + if err != nil && err.Error() != "read ptm: input/output error" { + t.Errorf("error reading pty: %+v", err) + } + + golden.AssertBytes(t, b, "ceottk-serial.golden.bin") + golden.Assert(t, string(output), "ceottk-output.golden") +} diff --git a/cmd/playsmf/testdata/ceottk-output.golden b/cmd/playsmf/testdata/ceottk-output.golden new file mode 100644 index 0000000..4cac21b --- /dev/null +++ b/cmd/playsmf/testdata/ceottk-output.golden @@ -0,0 +1,16 @@ +file: ./testdata/ceottk.mid +file format: SMF1 (multitrack) +number of tracks: 2 +time format: 480 MetricTicks +=========== +channel.NoteOn channel 1 key 79 velocity 81 +channel.ProgramChange channel 1 program 19 +channel.NoteOn channel 1 key 81 velocity 81 +channel.NoteOff channel 1 key 79 +channel.NoteOn channel 1 key 77 velocity 81 +channel.NoteOff channel 1 key 81 +channel.NoteOn channel 1 key 65 velocity 81 +channel.NoteOff channel 1 key 77 +channel.NoteOn channel 1 key 72 velocity 81 +channel.NoteOff channel 1 key 65 +channel.NoteOff channel 1 key 72 diff --git a/cmd/playsmf/testdata/ceottk-serial.golden.bin b/cmd/playsmf/testdata/ceottk-serial.golden.bin Binary files differnew file mode 100644 index 0000000..a505536 --- /dev/null +++ b/cmd/playsmf/testdata/ceottk-serial.golden.bin diff --git a/cmd/playsmf/testdata/ceottk.mid b/cmd/playsmf/testdata/ceottk.mid Binary files differnew file mode 100644 index 0000000..4d0877e --- /dev/null +++ b/cmd/playsmf/testdata/ceottk.mid |