added video codecs, works with mjpeg & h264-ffmpeg

encoders/dv8-enc.go

@@ -0,0 +1,84 @@
+package encoders
+
+import (
+	"image"
+	"io"
+	"os"
+	"os/exec"
+	"strings"
+	"vnc2webm/logger"
+)
+
+type DV8ImageEncoder struct {
+	cmd   *exec.Cmd
+	input io.WriteCloser
+}
+
+func (enc *DV8ImageEncoder) Init(videoFileName string) {
+	fileExt := ".webm"
+	if !strings.HasSuffix(videoFileName, fileExt) {
+		videoFileName = videoFileName + fileExt
+	}
+	binary := "./ffmpeg"
+	cmd := exec.Command(binary,
+		"-f", "image2pipe",
+		"-vcodec", "ppm",
+		//"-r", strconv.Itoa(framerate),
+		"-r", "3",
+		//"-i", "pipe:0",
+		"-i", "-",
+		"-vcodec", "libvpx", //"libvpx",//"libvpx-vp9"//"libx264"
+		"-b:v", "2M",
+		"-threads", "8",
+		//"-speed", "0",
+		//"-lossless", "1", //for vpx
+		// "-tile-columns", "6",
+		//"-frame-parallel", "1",
+		// "-an", "-f", "webm",
+		"-cpu-used", "-16",
+
+		"-preset", "ultrafast",
+		"-deadline", "realtime",
+		//"-cpu-used", "-5",
+		"-maxrate", "2.5M",
+		"-bufsize", "10M",
+		"-g", "6",
+
+		//"-rc_lookahead", "16",
+		//"-profile", "0",
+		"-qmax", "51",
+		"-qmin", "11",
+		//"-slices", "4",
+		//"-vb", "2M",
+
+		videoFileName,
+	)
+	//cmd := exec.Command("/bin/echo")
+
+	//io.Copy(cmd.Stdout, os.Stdout)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	encInput, err := cmd.StdinPipe()
+	enc.input = encInput
+	if err != nil {
+		logger.Error("can't get ffmpeg input pipe")
+	}
+	enc.cmd = cmd
+}
+func (enc *DV8ImageEncoder) Run() {
+	logger.Debugf("launching binary: %v", enc.cmd.Args)
+	err := enc.cmd.Run()
+	if err != nil {
+		logger.Error("error while launching ffmpeg:", err)
+	}
+}
+func (enc *DV8ImageEncoder) Encode(img image.Image) {
+	err := encodePPM(enc.input, img)
+	if err != nil {
+		logger.Error("error while encoding image:", err)
+	}
+}
+func (enc *DV8ImageEncoder) Close() {
+
+}

encoders/dv9-enc.go

@@ -0,0 +1,84 @@
+package encoders
+
+import (
+	"image"
+	"io"
+	"os"
+	"os/exec"
+	"strings"
+	"vnc2webm/logger"
+)
+
+type DV9ImageEncoder struct {
+	cmd   *exec.Cmd
+	input io.WriteCloser
+}
+
+func (enc *DV9ImageEncoder) Init(videoFileName string) {
+	fileExt := ".webm"
+	if !strings.HasSuffix(videoFileName, fileExt) {
+		videoFileName = videoFileName + fileExt
+	}
+	binary := "./ffmpeg"
+	cmd := exec.Command(binary,
+		"-f", "image2pipe",
+		"-vcodec", "ppm",
+		//"-r", strconv.Itoa(framerate),
+		"-r", "3",
+		//"-i", "pipe:0",
+		"-i", "-",
+		"-vcodec", "libvpx-vp9", //"libvpx",//"libvpx-vp9"//"libx264"
+		"-b:v", "2M",
+		"-threads", "8",
+		//"-speed", "0",
+		//"-lossless", "1", //for vpx
+		// "-tile-columns", "6",
+		//"-frame-parallel", "1",
+		// "-an", "-f", "webm",
+		"-cpu-used", "-16",
+
+		"-preset", "ultrafast",
+		"-deadline", "realtime",
+		//"-cpu-used", "-5",
+		"-maxrate", "2.5M",
+		"-bufsize", "10M",
+		"-g", "6",
+
+		//"-rc_lookahead", "16",
+		//"-profile", "0",
+		"-qmax", "51",
+		"-qmin", "11",
+		//"-slices", "4",
+		//"-vb", "2M",
+
+		videoFileName,
+	)
+	//cmd := exec.Command("/bin/echo")
+
+	//io.Copy(cmd.Stdout, os.Stdout)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	encInput, err := cmd.StdinPipe()
+	enc.input = encInput
+	if err != nil {
+		logger.Error("can't get ffmpeg input pipe")
+	}
+	enc.cmd = cmd
+}
+func (enc *DV9ImageEncoder) Run() {
+	logger.Debugf("launching binary: %v", enc.cmd.Args)
+	err := enc.cmd.Run()
+	if err != nil {
+		logger.Error("error while launching ffmpeg:", err)
+	}
+}
+func (enc *DV9ImageEncoder) Encode(img image.Image) {
+	err := encodePPM(enc.input, img)
+	if err != nil {
+		logger.Error("error while encoding image:", err)
+	}
+}
+func (enc *DV9ImageEncoder) Close() {
+
+}

encoders/image-enc.go

@@ -0,0 +1,43 @@
+package encoders
+
+import (
+	"fmt"
+	"image"
+	"image/color"
+	"io"
+)
+
+func encodePPM(w io.Writer, img image.Image) error {
+	maxvalue := 255
+	size := img.Bounds()
+	// write ppm header
+	_, err := fmt.Fprintf(w, "P6\n%d %d\n%d\n", size.Dx(), size.Dy(), maxvalue)
+	if err != nil {
+		return err
+	}
+
+	// write the bitmap
+	colModel := color.RGBAModel
+	row := make([]uint8, size.Dx()*3)
+	for y := size.Min.Y; y < size.Max.Y; y++ {
+		i := 0
+		for x := size.Min.X; x < size.Max.X; x++ {
+			color := colModel.Convert(img.At(x, y)).(color.RGBA)
+			row[i] = color.R
+			row[i+1] = color.G
+			row[i+2] = color.B
+			i += 3
+		}
+		if _, err := w.Write(row); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+type ImageEncoder interface {
+	Init(string)
+	Run()
+	Encode(image.Image)
+	Close()
+}

encoders/mjpeg-enc.go

@@ -0,0 +1,56 @@
+package encoders
+
+import (
+	"bytes"
+	"image"
+	"image/jpeg"
+	"strings"
+	"vnc2webm/logger"
+
+	"github.com/icza/mjpeg"
+)
+
+type MJPegImageEncoder struct {
+	avWriter  mjpeg.AviWriter
+	Quality   int
+	Framerate int32
+}
+
+func (enc *MJPegImageEncoder) Init(videoFileName string) {
+	fileExt := ".avi"
+	if !strings.HasSuffix(videoFileName, fileExt) {
+		videoFileName = videoFileName + fileExt
+	}
+	if enc.Framerate <= 0 {
+		enc.Framerate = 5
+	}
+	avWriter, err := mjpeg.New(videoFileName, 1024, 768, enc.Framerate)
+	if err != nil {
+		logger.Error("Error during mjpeg init: ", err)
+	}
+	enc.avWriter = avWriter
+}
+func (enc *MJPegImageEncoder) Run() {
+}
+func (enc *MJPegImageEncoder) Encode(img image.Image) {
+	buf := &bytes.Buffer{}
+	jOpts := &jpeg.Options{Quality: enc.Quality}
+	if enc.Quality <= 0 {
+		jOpts = nil
+	}
+	err := jpeg.Encode(buf, img, jOpts)
+	if err != nil {
+		logger.Error("Error while creating jpeg: ", err)
+	}
+	err = enc.avWriter.AddFrame(buf.Bytes())
+	if err != nil {
+		logger.Error("Error while adding frame to mjpeg: ", err)
+	}
+
+}
+func (enc *MJPegImageEncoder) Close() {
+	err := enc.avWriter.Close()
+	if err != nil {
+		logger.Error("Error while closing mjpeg: ", err)
+	}
+}

encoders/x264-enc.go

@@ -0,0 +1,92 @@
+package encoders
+
+import (
+	"image"
+	"io"
+	"os"
+	"os/exec"
+	"strings"
+	"vnc2webm/logger"
+)
+
+type X264ImageEncoder struct {
+	cmd        *exec.Cmd
+	binaryPath string
+	input      io.WriteCloser
+}
+
+func (enc *X264ImageEncoder) Init(videoFileName string) {
+	fileExt := ".mp4"
+	if !strings.HasSuffix(videoFileName, fileExt) {
+		videoFileName = videoFileName + fileExt
+	}
+	//binary := "./ffmpeg"
+	cmd := exec.Command(enc.binaryPath,
+		"-f", "image2pipe",
+		"-vcodec", "ppm",
+		//"-r", strconv.Itoa(framerate),
+		"-r", "4",
+		//"-i", "pipe:0",
+		"-i", "-",
+		"-vcodec", "libx264", //"libvpx",//"libvpx-vp9"//"libx264"
+		"-b:v", "2M",
+		"-threads", "8",
+		//"-speed", "0",
+		//"-lossless", "1", //for vpx
+		// "-tile-columns", "6",
+		//"-frame-parallel", "1",
+		// "-an", "-f", "webm",
+		"-cpu-used", "-16",
+
+		"-preset", "ultrafast",
+		"-deadline", "realtime",
+		//"-cpu-used", "-5",
+		"-maxrate", "2.5M",
+		"-bufsize", "10M",
+		"-g", "6",
+
+		//"-rc_lookahead", "16",
+		//"-profile", "0",
+		"-qmax", "51",
+		"-qmin", "11",
+		//"-slices", "4",
+		//"-vb", "2M",
+
+		videoFileName,
+	)
+	//cmd := exec.Command("/bin/echo")
+
+	//io.Copy(cmd.Stdout, os.Stdout)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	encInput, err := cmd.StdinPipe()
+	enc.input = encInput
+	if err != nil {
+		logger.Error("can't get ffmpeg input pipe")
+	}
+	enc.cmd = cmd
+}
+func (enc *X264ImageEncoder) Run(encoderFilePath string, videoFileName string) {
+	if _, err := os.Stat(encoderFilePath); os.IsNotExist(err) {
+		logger.Error("encoder file doesn't exist in path:", encoderFilePath)
+		return
+	}
+
+	enc.binaryPath = encoderFilePath
+	enc.Init(videoFileName)
+	logger.Infof("launching binary: %v", enc.cmd)
+	err := enc.cmd.Run()
+	if err != nil {
+		logger.Errorf("error while launching ffmpeg: %v\n err: %v", enc.cmd.Args, err)
+	}
+}
+func (enc *X264ImageEncoder) Encode(img image.Image) {
+	err := encodePPM(enc.input, img)
+	if err != nil {
+		logger.Error("error while encoding image:", err)
+	}
+}
+func (enc *X264ImageEncoder) Close() {
+
+}

encoding.go

@@ -3,6 +3,7 @@ package vnc2webm
 import (
 	"bytes"
 	"image"
+	"image/draw"
 	"sync"
 )
 
@@ -78,6 +79,10 @@ var bPool = sync.Pool{
 	},
 }
 
+type Renderer interface {
+	SetTargetImage(draw.Image) 
+}
+
 // Encoding represents interface for vnc encoding
 type Encoding interface {
 	Type() EncodingType

encoding_tight.go

@@ -12,8 +12,6 @@ import (
 	"image/jpeg"
 	"io"
 	"math"
-	"os"
-	"strconv"
 	"vnc2webm/logger"
 )
 
@@ -79,9 +77,9 @@ func getTightColor(c io.Reader, pf *PixelFormat) (*color.RGBA64, error) {
 			return nil, err
 		}
 		rgb := color.RGBA64{
-			R: uint16(tbytes[0]), //byte(col >> pf.RedShift & int32(pf.RedMax)),
+			R: uint16(tbytes[0]),
-			G: uint16(tbytes[1]), //byte(col >> pf.GreenShift & int32(pf.GreenMax)),
+			G: uint16(tbytes[1]),
-			B: uint16(tbytes[2]), //byte(col >> pf.BlueShift & int32(pf.BlueMax)),
+			B: uint16(tbytes[2]),
 			A: uint16(1),
 		}
 		return &rgb, nil
@@ -114,24 +112,9 @@ func getTightColor(c io.Reader, pf *PixelFormat) (*color.RGBA64, error) {
 		B: uint16((pixel >> pf.BlueShift) & uint32(pf.BlueMax)),
 	}
 
-	// else {
-	// 	*clr = clr.cm[pixel]
-	// 	clr.cmIndex = pixel
-	// }
 	return &rgb, nil
 }
 
-// func getTightColor(bytes []byte, pf *PixelFormat) color.RGBA {
-// 	col := (int32(bytes[0])&0xff)<<16 | (int32(bytes[1])&0xff)<<8 | int32(bytes[2])&0xff
-// 	rgb := color.RGBA{
-// 		R: byte(col >> pf.RedShift & int32(pf.RedMax)),
-// 		G: byte(col >> pf.GreenShift & int32(pf.GreenMax)),
-// 		B: byte(col >> pf.BlueShift & int32(pf.BlueMax)),
-// 		A: byte(1),
-// 	}
-// 	return rgb
-// }
-
 func calcTightBytePerPixel(pf *PixelFormat) int {
 	bytesPerPixel := int(pf.BPP / 8)
 
@@ -153,16 +136,19 @@ func (enc *TightEncoding) resetDecoders(compControl uint8) {
 	}
 }
 
+func (enc *TightEncoding) SetTargetImage(img draw.Image) {
+	enc.Image = img
+}
+
 var counter int = 0
 
 func (enc *TightEncoding) Read(c Conn, rect *Rectangle) error {
 
-	var out *os.File
 	var err error
 	////////////
-	if counter > 40 {
+	// if counter > 40 {
-		os.Exit(1)
+	// 	os.Exit(1)
-	}
+	// }
 	////////////
 	pixelFmt := c.PixelFormat()
 	bytesPixel := calcTightBytePerPixel(&pixelFmt)
@@ -180,15 +166,16 @@ func (enc *TightEncoding) Read(c Conn, rect *Rectangle) error {
 	compctl, err := ReadUint8(c)
 
 	/////////////////
-	if out == nil {
+	// var out *os.File
-		out, err = os.Create("./output" + strconv.Itoa(counter) + "-" + strconv.Itoa(int(compctl)) + ".jpg")
+	// if out == nil {
-		if err != nil {
+	// 	out, err = os.Create("./output" + strconv.Itoa(counter) + "-" + strconv.Itoa(int(compctl)) + ".jpg")
-			fmt.Println(err)
+	// 	if err != nil {
-			os.Exit(1)
+	// 		fmt.Println(err)
-		}
+	// 		os.Exit(1)
-	}
+	// 	}
-	defer func() { counter++ }()
+	// }
-	defer jpeg.Encode(out, enc.Image, nil)
+	// defer func() { counter++ }()
+	// defer jpeg.Encode(out, enc.Image, nil)
 	//////////////
 
 	if err != nil {
@@ -213,15 +200,7 @@ func (enc *TightEncoding) Read(c Conn, rect *Rectangle) error {
 			return err
 		}
 
-		//logger.Debugf("bytesPixel= %d, compctl= %d, color= %v", bytesPixel, compctl, rectColor)
-
-		//imgRect := image.Rect(0, 0, int(c.Width()), int(c.Height()))
-		// if enc.Image == nil {
-		// 	enc.Image = image.NewRGBA(imgRect)
-		// }
-
 		c1 := color.RGBAModel.Convert(rectColor).(color.RGBA)
-
 		dst := (enc.Image).(*image.RGBA) // enc.Image.(*image.RGBA)
 		var x, y int
 
@@ -232,14 +211,8 @@ func (enc *TightEncoding) Read(c Conn, rect *Rectangle) error {
 				dst.Pix[offset+1] = c1.G
 				dst.Pix[offset+2] = c1.B
 				dst.Pix[offset+3] = c1.A
-
-				//dst.Set(int(x), int(y), c1)
-				//dst.Pix[y*uint16(dst.Bounds().Max.Y)+x] = []uint8{rectColor.R, rectColor.G, rectColor.B}
 			}
 		}
-		enc.Image = dst
-
-		//draw.Draw(dst, imgRect, &image.Uniform{rectColor}, image.ZP, draw.Src)
 
 		if bytesPixel != 3 {
 			return fmt.Errorf("non tight bytesPerPixel format, should be 3 bytes")
@@ -337,27 +310,7 @@ func (enc *TightEncoding) handleTightFilters(compCtl uint8, pixelFmt *PixelForma
 		}
 		//logger.Errorf("handleTightFilters: got tight data: %v", tightBytes)
 
-		myImg := enc.Image.(draw.Image)
+		enc.drawTightPalette(rect, palette, tightBytes)
-		bytePos := 0
-		bitPos := 0
-		var palettePos int
-		for i := 0; i < int(rect.Height); i++ {
-			for j := 0; j < int(rect.Width); j++ {
-				if len(palette) == 2 {
-					currByte := tightBytes[bytePos]
-					palettePos = int(currByte&byte(math.Pow(2.0, float64(bitPos)))) >> uint(bitPos)
-					//logger.Debugf("palletPos=%d, bitpos=%d, bytepos=%d", palettePos, bitPos, bytePos)
-					bytePos = bytePos + int((bitPos+1.0)/8.0)
-					bitPos = (bitPos + 1) % 8
-					//logger.Debugf("next: bitpos=%d, bytepos=%d", bitPos, bytePos)
-				} else {
-					palettePos = int(tightBytes[bytePos])
-					bytePos++
-				}
-				myImg.Set(int(rect.X)+j, int(rect.Y)+i, palette[palettePos])
-				//logger.Debugf("(%d,%d): pos: %d col:%d", int(rect.X)+j, int(rect.Y)+i, palettePos, palette[palettePos])
-			}
-		}
 		//enc.Image = myImg
 	case TightFilterGradient: //GRADIENT_FILTER
 		logger.Debugf("----GRADIENT_FILTER: bytesPixel=%d, counter=%d", bytesPixel, counter)
@@ -387,6 +340,29 @@ func (enc *TightEncoding) handleTightFilters(compCtl uint8, pixelFmt *PixelForma
 
 	return
 }
+func (enc *TightEncoding) drawTightPalette(rect *Rectangle, palette color.Palette, tightBytes []byte) {
+	myImg := enc.Image.(draw.Image)
+	bytePos := 0
+	bitPos := 0
+	var palettePos int
+	for i := 0; i < int(rect.Height); i++ {
+		for j := 0; j < int(rect.Width); j++ {
+			if len(palette) == 2 {
+				currByte := tightBytes[bytePos]
+				palettePos = int(currByte&byte(math.Pow(2.0, float64(bitPos)))) >> uint(bitPos)
+				//logger.Debugf("palletPos=%d, bitpos=%d, bytepos=%d", palettePos, bitPos, bytePos)
+				bytePos = bytePos + int((bitPos+1.0)/8.0)
+				bitPos = (bitPos + 1) % 8
+				//logger.Debugf("next: bitpos=%d, bytepos=%d", bitPos, bytePos)
+			} else {
+				palettePos = int(tightBytes[bytePos])
+				bytePos++
+			}
+			myImg.Set(int(rect.X)+j, int(rect.Y)+i, palette[palettePos])
+			//logger.Debugf("(%d,%d): pos: %d col:%d", int(rect.X)+j, int(rect.Y)+i, palettePos, palette[palettePos])
+		}
+	}
+}
 func (enc *TightEncoding) decodeGradData(rect *Rectangle, buffer []byte) {
 
 	logger.Debugf("putting gradient size: %v on image: %v", rect, enc.Image.Bounds())

example/client/main.go

@@ -3,11 +3,11 @@ package main
 import (
 	"context"
 	"image"
-	"log"
 	"net"
 	"os"
 	"time"
 	vnc "vnc2webm"
+	"vnc2webm/encoders"
 	"vnc2webm/logger"
 )
 
@@ -16,7 +16,7 @@ func main() {
 	// Establish TCP connection to VNC server.
 	nc, err := net.DialTimeout("tcp", os.Args[1], 5*time.Second)
 	if err != nil {
-		log.Fatalf("Error connecting to VNC host. %v", err)
+		logger.Fatalf("Error connecting to VNC host. %v", err)
 	}
 
 	logger.Debugf("starting up the client, connecting to: %s", os.Args[1])
@@ -41,31 +41,54 @@ func main() {
 
 	cc, err := vnc.Connect(context.Background(), nc, ccfg)
 	if err != nil {
-		log.Fatalf("Error negotiating connection to VNC host. %v", err)
+		logger.Fatalf("Error negotiating connection to VNC host. %v", err)
 	}
+	// out, err := os.Create("./output" + strconv.Itoa(counter) + ".jpg")
+	// if err != nil {
+	// 	fmt.Println(err)
+	// 	os.Exit(1)
+	// }
+	//vcodec := &encoders.MJPegImageEncoder{Quality: 60, Framerate: 6}
+	vcodec := &encoders.X264ImageEncoder{}
+	counter := 0
+	//vcodec.Init("./output" + strconv.Itoa(counter))
+	go vcodec.Run("./ffmpeg", "./output.mp4")
+
+	screenImage := image.NewRGBA(image.Rect(0, 0, int(cc.Width()), int(cc.Height())))
+	for _, enc := range ccfg.Encodings {
+		myRenderer, ok := enc.(vnc.Renderer)
+
+		if ok {
+			myRenderer.SetTargetImage(screenImage)
+		}
+	}
+	// var out *os.File
+
 	logger.Debugf("connected to: %s", os.Args[1])
 	defer cc.Close()
 
 	cc.SetEncodings([]vnc.EncodingType{vnc.EncTight})
-	rect := image.Rect(0, 0, int(cc.Width()), int(cc.Height()))
+	//rect := image.Rect(0, 0, int(cc.Width()), int(cc.Height()))
-	screenImage := image.NewRGBA64(rect)
+	//screenImage := image.NewRGBA64(rect)
 	// Process messages coming in on the ServerMessage channel.
 	for {
 		select {
 		case err := <-errorCh:
 			panic(err)
 		case msg := <-cchClient:
-			log.Printf("Received client message type:%v msg:%v\n", msg.Type(), msg)
+			logger.Debugf("Received client message type:%v msg:%v\n", msg.Type(), msg)
 		case msg := <-cchServer:
-			log.Printf("Received server message type:%v msg:%v\n", msg.Type(), msg)
+			logger.Debugf("Received server message type:%v msg:%v\n", msg.Type(), msg)
-			myRenderer, ok := msg.(vnc.Renderer)
 
-			if ok {
+			// out, err := os.Create("./output" + strconv.Itoa(counter) + ".jpg")
-				err = myRenderer.Render(screenImage)
+			// if err != nil {
-				if err != nil {
+			// 	fmt.Println(err)
-					log.Printf("Received server message type:%v msg:%v\n", msg.Type(), msg)
+			// 	os.Exit(1)
-				}
+			// }
-			}
+
+			counter++
+			//jpeg.Encode(out, screenImage, nil)
+			vcodec.Encode(screenImage)
 			reqMsg := vnc.FramebufferUpdateRequest{Inc: 1, X: 0, Y: 0, Width: cc.Width(), Height: cc.Height()}
 			reqMsg.Write(cc)
 		}

example/proxy/main.go

@@ -6,7 +6,6 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io"
-	"log"
 	"net"
 	"net/http"
 	_ "net/http/pprof"
@@ -15,6 +14,7 @@ import (
 	"sync"
 	"time"
 	vnc "vnc2webm"
+	"vnc2webm/logger"
 )
 
 type Auth struct {
@@ -189,7 +189,7 @@ func (auth *AuthVNCHTTP) Auth(c vnc.Conn) error {
 	if err != nil {
 		return fmt.Errorf("failed to get auth data: %s", err.Error())
 	}
-	log.Printf("http auth: %s\n", buf.Bytes())
+	logger.Infof("http auth: %s\n", buf.Bytes())
 	res.Body.Close()
 	data := strings.Split(buf.String(), " ")
 	if len(data) < 2 {
@@ -223,12 +223,12 @@ func (*AuthVNCHTTP) SubType() vnc.SecuritySubType {
 
 func main() {
 	go func() {
-		log.Println(http.ListenAndServe(":6060", nil))
+		logger.Info(http.ListenAndServe(":6060", nil))
 	}()
 
 	ln, err := net.Listen("tcp", ":6900")
 	if err != nil {
-		log.Fatalf("Error listen. %v", err)
+		logger.Fatalf("Error listen. %v", err)
 	}
 
 	schClient := make(chan vnc.ClientMessage)

example/server/main.go

@@ -4,17 +4,17 @@ import (
 	"context"
 	"fmt"
 	"image"
-	"log"
 	"math"
 	"net"
 	"time"
 	vnc "vnc2webm"
+	"vnc2webm/logger"
 )
 
 func main() {
 	ln, err := net.Listen("tcp", ":5900")
 	if err != nil {
-		log.Fatalf("Error listen. %v", err)
+		logger.Fatalf("Error listen. %v", err)
 	}
 
 	chServer := make(chan vnc.ClientMessage)
@@ -50,12 +50,12 @@ func main() {
 		case msg := <-chClient:
 			switch msg.Type() {
 			default:
-				log.Printf("11 Received message type:%v msg:%v\n", msg.Type(), msg)
+				logger.Debugf("11 Received message type:%v msg:%v\n", msg.Type(), msg)
 			}
 		case msg := <-chServer:
 			switch msg.Type() {
 			default:
-				log.Printf("22 Received message type:%v msg:%v\n", msg.Type(), msg)
+				logger.Debugf("22 Received message type:%v msg:%v\n", msg.Type(), msg)
 			}
 		}
 	}

logger/logger.go

@@ -2,7 +2,7 @@ package logger
 
 import "fmt"
 
-var simpleLogger = SimpleLogger{LogLevelDebug}
+var simpleLogger = SimpleLogger{LogLevelInfo}
 
 type Logger interface {
 	Debug(v ...interface{})

messages.go

@@ -3,7 +3,6 @@ package vnc2webm
 import (
 	"encoding/binary"
 	"fmt"
-	"image/draw"
 	"vnc2webm/logger"
 )
 
@@ -83,10 +82,6 @@ type ServerMessage interface {
 	Supported(Conn) bool
 }
 
-type Renderer interface {
-	Render(draw.Image) error
-}
-
 // FramebufferUpdate holds a FramebufferUpdate wire format message.
 type FramebufferUpdate struct {
 	_       [1]byte      // pad
@@ -99,11 +94,6 @@ func (msg *FramebufferUpdate) String() string {
 	return fmt.Sprintf("rects %d rectangle[]: { %v }", msg.NumRect, msg.Rects)
 }
 
-func (msg *FramebufferUpdate) Render(draw.Image) error {
-	
-	return nil
-}
-
 func (msg *FramebufferUpdate) Supported(c Conn) bool {
 	return true
 }