Add apis for capture and replay of events

capture.go

@@ -0,0 +1,91 @@
+package adb
+
+import (
+	"context"
+	"time"
+)
+
+// CaptureSequence allows you to record a series of taps and swipes on the screen to replay later
+//
+// This function is useful if you need to run an obscure shell command or if
+// you require functionality not provided by the exposed functions here.
+// Instead of using Shell, please consider submitting a PR with the functionality
+// you require.
+
+type SequenceSleep struct {
+	Duration time.Duration
+}
+
+func (s SequenceSleep) Play(d Device, ctx context.Context) error {
+	// TODO check if context is expired
+	time.Sleep(s.Duration)
+	return nil
+}
+
+func (s SequenceSleep) Length() time.Duration {
+	return s.Duration
+}
+
+type SequenceTap struct {
+	X int
+	Y int
+}
+
+func (s SequenceTap) Play(d Device, ctx context.Context) error {
+	return d.Tap(ctx, s.X, s.Y)
+}
+
+func (s SequenceTap) Length() time.Duration {
+	return 0
+}
+
+type SequenceSwipe struct {
+	X1       int
+	Y1       int
+	X2       int
+	Y2       int
+	Duration time.Duration
+}
+
+func (s SequenceSwipe) Play(d Device, ctx context.Context) error {
+	return d.Swipe(ctx, s.X1, s.Y1, s.X2, s.Y2, s.Duration)
+}
+
+func (s SequenceSwipe) Length() time.Duration {
+	return s.Duration
+}
+
+type Input interface {
+	Play(d Device, ctx context.Context) error
+	Length() time.Duration
+}
+
+type TapSequence struct {
+	Events []Input
+}
+
+// GetLength returns the length of all Input events inside of a given TapSequence
+//
+// This function is useful for devermining how long a context timeout should
+// last when calling ReplayTapSequence
+func (t TapSequence) GetLength() time.Duration {
+	duration := time.Duration(0)
+	for _, x := range t.Events {
+		duration += x.Length()
+	}
+	return duration
+}
+
+func (d Device) ReplayTapSequence(ctx context.Context, t TapSequence) error {
+	for _, e := range t.Events {
+		err := e.Play(d, ctx)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (d Device) CaptureSequence(ctx context.Context) (t TapSequence, err error) {
+	return TapSequence{}, nil
+}

shell.go

@@ -15,6 +15,12 @@ func (d Device) Shell(ctx context.Context, command string) (stdout string, stder
 	return "", "", 1, nil
 }
 
+// adb shell wm size
+// Physical size: 1440x3120
+func (d Device) GetScreenResolution(ctx context.Context) (width int, lenght int, err error) {
+	return 0, 0, nil
+}
+
 func (d Device) Tap(ctx context.Context, X, Y int) error {
 	return nil
 }