// Reads an image or image sequence from a blob.
func (self Canvas) OpenBlob(blob []byte, length uint) error {
status := C.MagickReadImageBlob(self.wand, unsafe.Pointer(&blob[0]), C.size_t(length))
if status == C.MagickFalse {
return fmt.Errorf(`Could not open image from blob: %s`, self.Error())
}
return nil
}
/* Reads an image or image sequence from a blob. */
func (w *MagickWand) ReadImageBlob(blob []byte, length uint) error {
if C.MagickReadImageBlob(w.wand, unsafe.Pointer(&blob[0]), C.size_t(length)) == C.MagickFalse {
eStr, eCode := w.Exception()
return fmt.Errorf("ReadImageBlob() failed : [%d] %s", eStr, eCode)
}
return nil
}
// Opens an image from binary, returns true on success.
func (cv Canvas) OpenBlob(data []byte) bool {
cv.filename = ""
status := C.MagickReadImageBlob(cv.wand, unsafe.Pointer(&data[0]), C.size_t(len(data)))
if status == C.MagickFalse {
return false
}
return true
}
func Open(filename string) (img *Image, err error) {
img = &Image{wand: C.NewMagickWand()}
var file *os.File
if file, err = os.Open(filename); err != nil {
return nil, err
}
var data []byte
if data, err = ioutil.ReadAll(file); err != nil {
return nil, err
}
C.MagickReadImageBlob(img.wand, unsafe.Pointer(&data[0]), C.size_t(len(data)))
return img, nil
}
// Public: read a blob data into the current wand
//
// Examples:
// im = NewMage()
// original, err := ioutil.ReadFile("test.jpg")
// success := im.ReadBlob(original)
func (m *Mage) ReadBlob(blob []byte) bool {
return mBoolean(C.MagickReadImageBlob(
m.wand,
unsafe.Pointer(&blob[0]),
C.size_t(len(blob))))
}