bundle encoding

pkg/osc/bundle.go

@@ -0,0 +1,20 @@
+package osc
+
+import "encoding/binary"
+
+func (b *OSCBundle) ToBytes() []byte {
+
+	bytes := stringToOSCBytes("#bundle")
+
+	bytes = binary.BigEndian.AppendUint64(bytes, b.TimeTag)
+
+	for _, packet := range b.Contents {
+		packetBytes := packet.ToBytes()
+		packetLength := len(packet.ToBytes())
+
+		bytes = append(bytes, int32ToOSCBytes(int32(packetLength))...)
+		bytes = append(bytes, packetBytes...)
+	}
+
+	return bytes
+}

pkg/osc/bundle_test.go

@@ -0,0 +1,71 @@
+package osc
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestOSCBundleEncoding(t *testing.T) {
+
+	testCases := []struct {
+		description string
+		message     OSCBundle
+		expected    []byte
+	}{
+		{
+			"simple contents single message",
+			OSCBundle{
+				TimeTag:  0x0000002000000000,
+				Contents: []OSCPacket{&OSCMessage{Address: "/oscillator/4/frequency", Args: []OSCArg{{Type: "f", Value: float32(440)}}}},
+			},
+			[]byte{35, 98, 117, 110, 100, 108, 101, 0, 0, 0, 0,
+				32, 0, 0, 0, 0, 0, 0, 0, 32, 47, 111,
+				115, 99, 105, 108, 108, 97, 116, 111, 114, 47, 52,
+				47, 102, 114, 101, 113, 117, 101, 110, 99, 121, 0,
+				44, 102, 0, 0, 67, 220, 0, 0},
+		},
+	}
+
+	for _, testCase := range testCases {
+
+		actual := testCase.message.ToBytes()
+
+		if !reflect.DeepEqual(actual, testCase.expected) {
+			t.Errorf("Test '%s' failed to encode properly", testCase.description)
+			fmt.Printf("expected: %v\n", testCase.expected)
+			fmt.Printf("actual: %v\n", actual)
+		}
+	}
+
+}
+
+func TestOSCBundleDecoding(t *testing.T) {
+	testCases := []struct {
+		description string
+		bytes       []byte
+		expected    OSCMessage
+	}{}
+
+	for _, testCase := range testCases {
+
+		actual, error := MessageFromBytes(testCase.bytes)
+
+		if error != nil {
+			fmt.Println(error)
+			t.Errorf("Test '%s' failed to encode properly", testCase.description)
+		}
+
+		if !reflect.DeepEqual(actual.Address, testCase.expected.Address) {
+			t.Errorf("Test '%s' failed to encode address properly", testCase.description)
+			fmt.Printf("expected: %v\n", testCase.expected.Address)
+			fmt.Printf("actual: %v\n", actual.Address)
+		}
+
+		if !reflect.DeepEqual(actual.Args, testCase.expected.Args) {
+			t.Errorf("Test '%s' failed to encode args properly", testCase.description)
+			fmt.Printf("expected: %v\n", testCase.expected.Args)
+			fmt.Printf("actual: %v\n", actual.Args)
+		}
+	}
+}

pkg/osc/types.go

@@ -4,6 +4,10 @@ type OSCPacket interface {
 	ToBytes() []byte
 }
 
+type OSCBundle struct {
+	TimeTag  uint64
+	Contents []OSCPacket
+}
 
 type OSCArg struct {
 	Type  string