Exemplo n.º 1
0
func Fuzz(data []byte) int {
	cfg, err := gif.DecodeConfig(bytes.NewReader(data))
	if err != nil {
		return 0
	}
	if cfg.Width*cfg.Height > 1e6 {
		return 0
	}
	img, err := gif.Decode(bytes.NewReader(data))
	if err != nil {
		return 0
	}
	for c := 1; c <= 256; c += 21 {
		var w bytes.Buffer
		err = gif.Encode(&w, img, &gif.Options{NumColors: c})
		if err != nil {
			panic(err)
		}
		img1, err := gif.Decode(&w)
		if err != nil {
			panic(err)
		}
		b0 := img.Bounds()
		b1 := img1.Bounds()
		if b0.Max.X-b0.Min.X != b1.Max.X-b1.Min.X || b0.Max.Y-b0.Min.Y != b1.Max.Y-b1.Min.Y {
			fmt.Printf("img0: %#v\n", img.Bounds())
			fmt.Printf("img1: %#v\n", img1.Bounds())
			panic("bounds changed")
		}
	}
	return 1
}
Exemplo n.º 2
0
func writeToJP() {

	imgRect := image.Rect(0, 0, gridSize*10, gridSize*10)
	img := image.NewGray(imgRect)
	draw.Draw(img, img.Bounds(), &image.Uniform{color.White}, image.ZP, draw.Src)
	for x := 0; x < gridSize; x++ {
		for y := 0; y < gridSize; y++ {
			fill := &image.Uniform{color.White}
			if Env[x][y] == -1 {
				fill = &image.Uniform{color.Black}
			} else if Env[x][y] > 1 {
				c := color.Gray{uint8(Env[x][y] * 20)}
				fill = &image.Uniform{c}
			}

			draw.Draw(img, image.Rect((x-1)*10, (y-1)*10, x*10, y*10), fill, image.ZP, draw.Src)
		}
	}
	buf := bytes.Buffer{}
	// ok, write out the data into the new JPEG file
	err := gif.Encode(&buf, img, nil)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	tmpimg, err := gif.Decode(&buf)
	if err != nil {
		log.Printf("Skipping frame due to weird error reading the temporary gif :%s", err)
	}
	frames = append(frames, tmpimg.(*image.Paletted))
}
Exemplo n.º 3
0
func init() {
	var err error
	Gordon, err = gif.Decode(bytes.NewReader(GordonGif))
	if err != nil {
		panic(err)
	}
}
Exemplo n.º 4
0
func TestNewRevisitImageWithGIF(t *testing.T) {
	gifMsg, err := NewRevisitMsgFromFiles("./fixtures/bob.gif")
	if err != nil {
		t.Fatal(err)
	}

	ri, err := NewRevisitImageFromMsg(gifMsg)
	if err != nil {
		t.Fatal(err)
	}

	if len(ri.Rgbas) != 4 {
		t.Errorf("ri.Rgbas length should be 4, is %d", len(ri.Rgbas))
	}

	if len(ri.Delay) != 4 {
		t.Errorf("ri.Delay length should be 4, is %d", len(ri.Delay))
	}

	if ri.LoopCount != 0 {
		t.Errorf("LoopCount should be 0, is %d", ri.LoopCount)
	}

	ri.Transform(mockTransform)

	m, err := ri.RevisitMsg()
	if err != nil {
		t.Error(err)
	}

	_, err = gif.Decode(m.ImageByteReader())
	if err != nil {
		t.Error(err)
	}
}
Exemplo n.º 5
0
func Test_fetchGifCompareWithPng_Fail(t *testing.T) {

	ts := testutils.TestImgServer("gif")
	defer ts.Close()

	data, err := fetch(ts.URL)
	if err != nil {
		t.FailNow()
	}

	imgServer, err := gif.Decode(bytes.NewReader(data))
	if err != nil {
		t.FailNow()
	}

	file, _ := os.Open("testdata/test.png")
	defer file.Close()
	imgDisk, _, _ := image.Decode(file)

	if reflect.DeepEqual(imgDisk, imgServer) {
		_, file, line, _ := runtime.Caller(0)
		fmt.Printf("%s:%d:\n\ncall fetch(%#v)\n\texp: %#v\n\n\tgot: %#v\n\n",
			filepath.Base(file), line, ts.URL, imgDisk, imgServer)
		t.FailNow()
	}
}
Exemplo n.º 6
0
func decode_img(data []byte, content_type string) (*image.Image, error) {
	var (
		img image.Image
		err error
	)

	buffer := bytes.NewBuffer(data)

	switch content_type {
	case "image/jpeg":
		img, err = jpeg.Decode(buffer)
	case "image/gif":
		img, err = gif.Decode(buffer)
	case "image/png":
		img, err = png.Decode(buffer)

	default:
		err = errors.New("Unknown content type " + content_type)
	}

	if err != nil {
		log.Println(err)
		return nil, err
	}

	return &img, nil
}
Exemplo n.º 7
0
// GetImage downloads a Media object and returns an image.Image. The
// documentation isn't great on what happens - as of October 2016, we make a
// request to the Twilio API, then to media.twiliocdn.com, then to a S3 URL. We
// then download that image and decode it based on the provided content-type.
func (m *MediaService) GetImage(ctx context.Context, messageSid string, sid string) (image.Image, error) {
	u, err := m.GetURL(ctx, messageSid, sid)
	if err != nil {
		return nil, err
	}
	if u.Scheme == "http" {
		return nil, fmt.Errorf("Attempted to download image over insecure URL: %s", u.String())
	}
	req, err := http.NewRequest("GET", u.String(), nil)
	if err != nil {
		return nil, err
	}
	req = withContext(req, ctx)
	req.Header.Set("User-Agent", userAgent)
	resp, err := MediaClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	// https://www.twilio.com/docs/api/rest/accepted-mime-types#supported
	ctype := resp.Header.Get("Content-Type")
	switch ctype {
	case "image/jpeg":
		return jpeg.Decode(resp.Body)
	case "image/gif":
		return gif.Decode(resp.Body)
	case "image/png":
		return png.Decode(resp.Body)
	default:
		io.Copy(ioutil.Discard, resp.Body)
		return nil, fmt.Errorf("twilio: Unknown content-type %s", ctype)
	}
}
Exemplo n.º 8
0
// NewMazeMatrix creates a image matrix base on fetched body
func NewMazeMatrix(r io.Reader, m *MazeImage) (*MazeMatrix, error) {
	mazeMatrix := &MazeMatrix{i: m}
	img, err := gif.Decode(r)
	if err != nil {
		return nil, err
	}
	rect := img.Bounds()
	rgba := image.NewRGBA(rect)
	draw.Draw(rgba, rect, img, rect.Min, draw.Src)
	reader := bytes.NewReader(rgba.Pix)
	matrix := make([][]MatrixToken, rect.Max.Y)
	for y := 0; y < rect.Max.Y; y++ {
		for x := 0; x < rect.Max.X; x++ {
			if len(matrix[y]) == 0 {
				matrix[y] = make([]MatrixToken, rect.Max.X)
			}
			part := make([]byte, 4)
			reader.Read(part)
			if y == 0 || x == 0 {
				matrix[y][x] = BORDER
			} else {
				if mazeMatrix.isWall(part[0], part[1], part[2]) {
					matrix[y][x] = WALL
				} else {
					matrix[y][x] = PATH
				}
			}
		}
	}
	mazeMatrix.m = matrix
	return mazeMatrix, nil
}
Exemplo n.º 9
0
func getImage(rc io.Reader) (img image.Image, ft string, err error) {
	// Tries to identify an Image as type JPEG, PNG or Gif.
	// I have seen this failing so I don't know how long this is going to last.

	img, ft, err = image.Decode(rc)
	if err == nil {
		return
	}

	img, err = png.Decode(rc)
	if err == nil {
		ft = "png"
		return
	}

	img, err = jpeg.Decode(rc)
	if err == nil {
		ft = "jpeg"
		return
	}

	img, err = gif.Decode(rc)
	if err == nil {
		ft = "gif"
	}

	return
}
Exemplo n.º 10
0
func decodeGif(buf bytes.Buffer) (*Img, error) {
	image := new(Img)
	image.Original = buf

	var newBuf bytes.Buffer
	io.Copy(&newBuf, &buf)

	g, err := gif.Decode(&newBuf)
	if err != nil {
		log.Println(err.Error())

		return nil, err
	}

	var pngImage bytes.Buffer
	err = png.Encode(&pngImage, g)
	if err != nil {
		log.Println(err.Error())

		return nil, err
	}
	image.Snapshot = pngImage

	return image, nil
}
Exemplo n.º 11
0
func TestWriter(t *testing.T) {
	for _, tc := range testCase {
		m0, err := readImg(tc.filename)
		if err != nil {
			t.Error(tc.filename, err)
		}
		var buf bytes.Buffer
		err = Encode(&buf, m0, nil)
		if err != nil {
			t.Error(tc.filename, err)
		}
		m1, err := gif.Decode(&buf)
		if err != nil {
			t.Error(tc.filename, err)
		}
		if m0.Bounds() != m1.Bounds() {
			t.Errorf("%s, bounds differ: %v and %v", tc.filename, m0.Bounds(), m1.Bounds())
		}
		// Compare the average delta to the tolerance level.
		avgDelta := averageDelta(m0, m1)
		if avgDelta > tc.tolerance {
			t.Errorf("%s: average delta is too high. expected: %d, got %d", tc.filename, tc.tolerance, avgDelta)
			continue
		}
	}
}
Exemplo n.º 12
0
func init() {
	gordonGifData := gordon_gif()
	var err error
	Gordon, err = gif.Decode(bytes.NewReader(gordonGifData))
	if err != nil {
		panic(err)
	}
}
Exemplo n.º 13
0
func ResizeGif(wb *bytes.Buffer, r io.Reader, g *gift.GIFT, width int, height int) error {
	src, err := gif.Decode(r)
	bounds := src.Bounds()
	dst := src
	if width < bounds.Dx() || height < bounds.Dy() {
		dst = ApplyFilter(src, g)
	}
	err = gif.Encode(wb, dst, nil)
	return err
}
Exemplo n.º 14
0
func (ih *ImageHelper) Decode(file multipart.File, fileType string) (image.Image, error) {
	if fileType == "png" {
		return png.Decode(file)
	} else if fileType == "jpeg" || fileType == "jpg" {
		return jpeg.Decode(file)
	} else if fileType == "gif" {
		return gif.Decode(file)
	}
	log.Println("Unsupported media for decoding ", fileType)
	return nil, errors.New("Unsupported media type")
}
Exemplo n.º 15
0
func imageDecode(fileext string, file io.Reader) (image.Image, error) {
	switch fileext {
	case "jpg", "jpeg":
		return jpeg.Decode(file)
	case "png":
		return png.Decode(file)
	case "gif":
		return gif.Decode(file)
	default:
		return nil, nil
	}
}
Exemplo n.º 16
0
Arquivo: image.go Projeto: Kimau/GoCam
func loadGIFromFolder(name string) image.Image {
	f, e := os.Open(name)
	if e != nil {
		log.Println("loadGIFromFolder Failed to Open", name, e)
		return nil
	}

	img, _ := gif.Decode(f)
	f.Close()
	return img

}
Exemplo n.º 17
0
// TODO Could switch to image.Decode here...
func decodeImage(reader io.Reader, filetype string) (img image.Image, err error) {
	switch filetype {
	case JPEG, JPG:
		img, err = jpeg.Decode(reader)
	case PNG:
		img, err = png.Decode(reader)
	case GIF:
		img, err = gif.Decode(reader)
	default:
		img, err = nil, errors.New("Cannot decode unknown image file type: "+filetype)
	}

	return
}
Exemplo n.º 18
0
Arquivo: main.go Projeto: junzzz/irt
func getDecodedImage(file io.Reader, format string) (img image.Image, err error) {
	switch format {
	case JPG:
		img, err = jpeg.Decode(file)
	case GIF:
		img, err = gif.Decode(file)
	case PNG:
		img, err = png.Decode(file)
	default:
		img = nil
		err = &otherImageError{"other image format"}
	}
	return

}
Exemplo n.º 19
0
func GetImageFromUrl(url string) image.Image {
	log.Println(url)
	response, err := http.Get(url)
	if err != nil {
		log.Println(err)
	}
	defer response.Body.Close()

	var img image.Image
	switch response.Header.Get("Content-Type") {
	case "image/gif":
		img, _ = gif.Decode(response.Body)
	}

	return img
}
Exemplo n.º 20
0
func decodeGIF(f multipart.File) (*Image, error) {
	var image Image

	ic, err := gif.DecodeConfig(f)
	_, err = f.Seek(0, 0)
	i, err := gif.Decode(f)

	if err != nil {
		return nil, fmt.Errorf("Could not decode GIF file.")
	}

	image.Config = ic
	image.Image = i

	return &image, nil
}
Exemplo n.º 21
0
//parse and concenate all gif file into an animated movie
func (r *Run) CreateMovieFromGif() {

	// open the current working directory
	cwd, error := os.Open(".")

	if error != nil {
		panic("not able to open current working directory")
	}

	// get files with their names
	names, err := cwd.Readdirnames(0)

	if err != nil {
		panic("cannot read names in current working directory")
	}

	// parse the list of names and pick the ones that match the
	var files []string

	for _, dirname := range names {
		if strings.Contains(dirname, r.country) && strings.Contains(dirname, "gif") {
			fmt.Printf("dirname %s\n", dirname)
			files = append(files, dirname)
		}
	}

	// load static image and construct outGif
	outGif := &gif.GIF{}
	for _, name := range files {
		f, errOpen := os.Open(name)
		if errOpen != nil {
			panic(fmt.Sprintf("cannot read file %s", name))
		}
		inGif, _ := gif.Decode(f)
		f.Close()

		outGif.Image = append(outGif.Image, inGif.(*image.Paletted))
		outGif.Delay = append(outGif.Delay, 100)
	}

	// save to out.gif
	f, _ := os.OpenFile("hti.gif", os.O_WRONLY|os.O_CREATE, 0600)
	defer f.Close()
	gif.EncodeAll(f, outGif)

}
Exemplo n.º 22
0
func DecodeImage(fileName string) (img image.Image, err error) {
	file, err := os.Open(fileName)
	if err != nil {
		fmt.Println(err)
		return
	}
	suffixName := strings.ToLower(fileName[strings.LastIndex(fileName, ".")+1:])
	switch suffixName {
	case "jpg":
		img, err = jpeg.Decode(file)
	case "png":
		img, err = png.Decode(file)
	case "gif":
		img, err = gif.Decode(file)
	default:
		err = errors.New("Not correct image format :" + suffixName)
	}
	return
}
Exemplo n.º 23
0
func ResizeGif(pic string) {
	// open the Picture
	file, err := os.Open(pic)
	utility.ShitAppend(err)

	img, err := gif.Decode(file)
	utility.ShitAppend(err)
	file.Close()

	// Resize the Picture Data
	m := resize.Resize(565, 363, img, resize.Lanczos3)

	out, err := os.Create(pic)
	utility.ShitAppend(err)
	defer out.Close()

	// OverWrite the None Resizing Picture
	gif.Encode(out, m, nil)
}
Exemplo n.º 24
0
func GetImg(url string) (img image.Image, err error) {
	resp, err := http.Get(url)
	if err != nil {
		fmt.Println("GetImgError:", err)
		return img, err
	} else {
		//length, _ := strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 0)
		content_type := resp.Header.Get("Content-Type")
		switch strings.TrimPrefix(content_type, "image/") {
		case "png":
			img, _ = png.Decode(resp.Body)
		case "jpeg":
			img, _ = jpeg.Decode(resp.Body)
		case "gif":
			img, _ = gif.Decode(resp.Body)
		}
	}
	return img, nil
}
Exemplo n.º 25
0
func flipImageRes(res *http.Response) *http.Response {
	switch res.Header["Content-Type"][0] {
	case "image/jpeg":
		m, err := jpeg.Decode(res.Body)
		if err != nil {
			log.Println("image error:", err)
			return res
		}
		buf := imgBuffer{bytes.NewBuffer([]byte{})}
		n := flipImage(m)
		jpeg.Encode(buf, n, nil)
		res.Header.Del("Content-Length")
		res.Body = buf
	case "image/gif":
		m, err := gif.Decode(res.Body)
		if err != nil {
			log.Println("image error:", err)
			return res
		}
		buf := imgBuffer{bytes.NewBuffer([]byte{})}
		n := flipImage(m)
		png.Encode(buf, n)
		res.Header.Del("Content-Length")
		res.Header.Del("Content-Type")
		res.Header.Add("Content-Type", "image/png")
		res.Body = buf
	case "image/png":
		m, err := png.Decode(res.Body)
		if err != nil {
			log.Println("image error:", err)
			return res
		}
		buf := imgBuffer{bytes.NewBuffer([]byte{})}
		n := flipImage(m)
		png.Encode(buf, n)
		res.Header.Del("Content-Length")
		res.Header.Del("Content-Type")
		res.Header.Add("Content-Type", "image/png")
		res.Body = buf
	}
	return res
}
Exemplo n.º 26
0
func (r *Resize) decodeData(reader bytes.Buffer, ext string) *image.Image {
	var err error
	var img image.Image

	// decode reader into image.Image
	switch {
	case ext == "jpg":
		img, err = jpeg.Decode(&reader)
	case ext == "png":
		img, err = png.Decode(&reader)
	case ext == "gif":
		img, err = gif.Decode(&reader)
	}

	if err != nil {
		log.Fatal(err)
		return nil
	}

	return &img
}
Exemplo n.º 27
0
func LoadImage(filename string) image.Image {

	f, err := os.Open("images/" + filename)
	tools.ErrorCheck(err)

	var img image.Image = nil

	lowerFilename := strings.ToLower(filename)
	switch {
	case strings.HasSuffix(lowerFilename, ".jpg"):
		img, err = jpeg.Decode(f)
	case strings.HasSuffix(lowerFilename, ".png"):
		img, err = png.Decode(f)
	case strings.HasSuffix(lowerFilename, ".gif"):
		img, err = gif.Decode(f)
	}

	tools.ErrorCheck(err)

	return img
}
Exemplo n.º 28
0
func decodeImage(filePath string) (img image.Image, err error) {
	reader, err := os.Open(filePath)
	if err != nil {
		return nil, err
	}
	defer reader.Close()

	last3Strings := strings.ToLower(filePath[len(filePath)-3:])
	last4Strings := strings.ToLower(filePath[len(filePath)-4:])
	if last3Strings == "jpg" || last4Strings == "jpeg" {
		img, err = jpeg.Decode(reader)
	} else if last3Strings == "gif" {
		img, err = gif.Decode(reader)
	} else if last3Strings == "png" {
		img, err = png.Decode(reader)
	} else {
		img = nil
		err = errors.New("unknown format")
	}
	return
}
Exemplo n.º 29
0
// Gets an image from a GIF, JPEG, or PNG file.
func readImage(filename string) image.Image {
	file, err := os.Open(filename)
	if err != nil {
		die(err)
	}
	defer file.Close()

	// Attempt to decode the file in different formats
	if image, err := png.Decode(file); err == nil {
		return image
	}
	file.Seek(0, 0)
	if image, err := gif.Decode(file); err == nil {
		return image
	}
	file.Seek(0, 0)
	if image, err := jpeg.Decode(file); err == nil {
		return image
	}
	die(errors.New("unsupported file type: " + filename))
	return nil // unreachable
}
Exemplo n.º 30
0
func loadImgSpecFormat(file string, ft string) (image.Image, error) {
	file_origin, err := os.Open(file)
	if err != nil {
		return nil, Newcuserr(10000)
	}
	defer file_origin.Close()
	var img0 image.Image
	switch ft {
	case "gif":
		img0, err = gif.Decode(file_origin)
	case "png":
		img0, err = png.Decode(file_origin)
	case "webp":
		img0, err = webp.Decode(file_origin)
	default:
		img0, err = jpeg.Decode(file_origin)
	}
	if err != nil {
		return nil, Newcuserr(10001)
	}
	return img0, nil
}