func Decode(r io.Reader) (image.Image, error)
Decode reads a GIF image from r and returns the first embedded image as an image.Image.
func DecodeConfig(r io.Reader) (image.Config, error)
DecodeConfig returns the global color model and dimensions of a GIF image without decoding the entire image.
func Encode(w io.Writer, m image.Image, o *Options) error
Encode writes the Image m to w in GIF format.
func EncodeAll(w io.Writer, g *GIF) error
EncodeAll writes the images in g to w in GIF format with the given loop count and delay between frames.
type GIF struct {
Image []*image.Paletted // The successive images.
Delay []int // The successive delay times, one per frame, in 100ths of a second.
LoopCount int // The loop count.
}
GIF represents the possibly multiple images stored in a GIF file.
func DecodeAll(r io.Reader) (*GIF, error)
DecodeAll reads a GIF image from r and returns the sequential frames and timing information.
type Options struct {
// NumColors is the maximum number of colors used in the image.
// It ranges from 1 to 256.
NumColors int
// Quantizer is used to produce a palette with size NumColors.
// palette.Plan9 is used in place of a nil Quantizer.
Quantizer draw.Quantizer
// Drawer is used to convert the source image to the desired palette.
// draw.FloydSteinberg is used in place of a nil Drawer.
Drawer draw.Drawer
}
Options are the encoding parameters.