protocol/rtp: removed op from Client i.e. what is read from Client are RTP packets.

protocol/rtp/client.go

@@ -47,7 +47,7 @@ const (
 
 // RingBuffer consts.
 const (
-	ringBufferSize        = 10
+	ringBufferSize        = 100
 	ringBufferElementSize = 4096
 )
 
@@ -56,13 +56,12 @@ type log func(lvl int8, msg string, args ...interface{})
 // Client describes an RTP client that can receive an RTP stream and implements
 // io.Reader.
 type Client struct {
-	conn *net.UDPConn                 // The UDP connection RTP packets will be read from.
-	wg   sync.WaitGroup               // Used to wait for recv routine to finish.
-	done chan struct{}                // Used to terminate the recv routine.
-	ring *ring.Buffer                 // Processed data from RTP packets will be stored here.
-	op   func([]byte) ([]byte, error) // The operation to perform on received RTP packets before storing.
-	err  chan error                   // Errors encountered during recv will be sent to this chan.
-	rt   time.Duration                // Read timeout used when reading from the ringbuffer.
+	conn *net.UDPConn   // The UDP connection RTP packets will be read from.
+	wg   sync.WaitGroup // Used to wait for recv routine to finish.
+	done chan struct{}  // Used to terminate the recv routine.
+	ring *ring.Buffer   // Processed data from RTP packets will be stored here.
+	err  chan error     // Errors encountered during recv will be sent to this chan.
+	rt   time.Duration  // Read timeout used when reading from the ringbuffer.
 	log
 }
 
@@ -75,11 +74,10 @@ type Client struct {
 // in the ringBuffer for reading. l is a logging function defined by the
 // signuture of the log type defined above. rt is the read timeout used when
 // reading from the client ringbuffer.
-func NewClient(addr string, op func([]byte) ([]byte, error), l log, rt time.Duration) (*Client, error) {
+func NewClient(addr string, l log, rt time.Duration) (*Client, error) {
 	c := &Client{
 		done: make(chan struct{}, chanSize),
 		ring: ring.NewBuffer(ringBufferSize, ringBufferElementSize, 0),
-		op:   op,
 		log:  l,
 		err:  make(chan error),
 		rt:   rt,
@@ -139,19 +137,7 @@ func (c *Client) recv() {
 			}
 			c.log(logger.Debug, pkg+"packet received", "packet", buf[:n])
 
-			var _buf []byte
-			switch c.op {
-			case nil:
-				_buf = buf[:n]
-			default:
-				_buf, err = c.op(buf[:n])
-				if err != nil {
-					c.err <- err
-					continue
-				}
-			}
-
-			_, err = c.ring.Write(_buf)
+			_, err = c.ring.Write(buf[:n])
 			c.ring.Flush()
 			if err != nil {
 				c.err <- err

protocol/rtp/client_test.go

@@ -75,94 +75,86 @@ func TestReceive(t *testing.T) {
 		packetsToSend = 20
 	)
 
-	for _, op := range []func([]byte) ([]byte, error){nil, Payload} {
-		testErr := make(chan error)
-		serverErr := make(chan error)
-		done := make(chan struct{})
-		clientReady := make(chan struct{})
-		var c *Client
+	testErr := make(chan error)
+	serverErr := make(chan error)
+	done := make(chan struct{})
+	clientReady := make(chan struct{})
+	var c *Client
 
-		// Start routine to read from client.
-		go func() {
-			// Create and start the client.
-			var err error
-			c, err = NewClient(clientAddr, op, (*dummyLogger)(t).log, 1*time.Millisecond)
-			if err != nil {
-				testErr <- fmt.Errorf("could not create client, failed with error: %v\n", err)
-			}
-			c.Start()
-			close(clientReady)
+	// Start routine to read from client.
+	go func() {
+		// Create and start the client.
+		var err error
+		c, err = NewClient(clientAddr, (*dummyLogger)(t).log, 1*time.Millisecond)
+		if err != nil {
+			testErr <- fmt.Errorf("could not create client, failed with error: %v\n", err)
+		}
+		c.Start()
+		close(clientReady)
 
-			// Read packets using the client and check them with expected.
-			var packetsReceived int
-			buf := make([]byte, 4096)
-			for packetsReceived != packetsToSend {
-				n, err := c.Read(buf)
-				switch err {
-				case nil:
-				case io.EOF:
-					continue
-				default:
-					testErr <- fmt.Errorf("unexpected error from c.Read: %v\n", err)
-				}
-
-				// Create expected data and apply operation if there is one.
-				expect := (&Pkt{V: rtpVer, Payload: []byte{byte(packetsReceived)}}).Bytes(nil)
-				if op != nil {
-					expect, err = op(expect)
-					if err != nil {
-						testErr <- fmt.Errorf("unexpected error when applying op: %v\n", err)
-					}
-				}
-
-				// Compare.
-				got := buf[:n]
-				if !bytes.Equal(got, expect) {
-					testErr <- fmt.Errorf("did not get expected result. \nGot: %v\n Want: %v\n", got, expect)
-				}
-				packetsReceived++
-			}
-			c.Stop()
-			close(done)
-		}()
-
-		// Start the RTP server.
-		go func() {
-			<-clientReady
-			cAddr, err := net.ResolveUDPAddr("udp", clientAddr)
-			if err != nil {
-				serverErr <- fmt.Errorf("could not resolve server address, failed with err: %v\n", err)
-			}
-
-			conn, err := net.DialUDP("udp", nil, cAddr)
-			if err != nil {
-				serverErr <- fmt.Errorf("could not dial udp, failed with err: %v\n", err)
-			}
-
-			// Send packets to the client.
-			for i := 0; i < packetsToSend; i++ {
-				p := (&Pkt{V: rtpVer, Payload: []byte{byte(i)}}).Bytes(nil)
-				_, err := conn.Write(p)
-				if err != nil {
-					serverErr <- fmt.Errorf("could not write packet to conn, failed with err: %v\n", err)
-				}
-			}
-		}()
-
-		<-clientReady
-	loop:
-		for {
-			select {
-			case err := <-c.Err():
-				t.Log(err)
-			case err := <-testErr:
-				t.Fatal(err)
-			case err := <-serverErr:
-				t.Fatal(err)
-			case <-done:
-				break loop
+		// Read packets using the client and check them with expected.
+		var packetsReceived int
+		buf := make([]byte, 4096)
+		for packetsReceived != packetsToSend {
+			n, err := c.Read(buf)
+			switch err {
+			case nil:
+			case io.EOF:
+				continue
 			default:
+				testErr <- fmt.Errorf("unexpected error from c.Read: %v\n", err)
 			}
+
+			// Create expected data and apply operation if there is one.
+			expect := (&Pkt{V: rtpVer, Payload: []byte{byte(packetsReceived)}}).Bytes(nil)
+
+			// Compare.
+			got := buf[:n]
+			if !bytes.Equal(got, expect) {
+				testErr <- fmt.Errorf("did not get expected result. \nGot: %v\n Want: %v\n", got, expect)
+			}
+			packetsReceived++
+		}
+		c.Stop()
+		close(done)
+	}()
+
+	// Start the RTP server.
+	go func() {
+		<-clientReady
+		cAddr, err := net.ResolveUDPAddr("udp", clientAddr)
+		if err != nil {
+			serverErr <- fmt.Errorf("could not resolve server address, failed with err: %v\n", err)
+		}
+
+		conn, err := net.DialUDP("udp", nil, cAddr)
+		if err != nil {
+			serverErr <- fmt.Errorf("could not dial udp, failed with err: %v\n", err)
+		}
+
+		// Send packets to the client.
+		for i := 0; i < packetsToSend; i++ {
+			p := (&Pkt{V: rtpVer, Payload: []byte{byte(i)}}).Bytes(nil)
+			_, err := conn.Write(p)
+			if err != nil {
+				serverErr <- fmt.Errorf("could not write packet to conn, failed with err: %v\n", err)
+			}
+		}
+	}()
+
+	<-clientReady
+loop:
+	for {
+		select {
+		case err := <-c.Err():
+			t.Log(err)
+		case err := <-testErr:
+			t.Fatal(err)
+		case err := <-serverErr:
+			t.Fatal(err)
+		case <-done:
+			break loop
+		default:
 		}
 	}
 }