51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package imagequant
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import (
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"errors"
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"unsafe"
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)
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/*
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#include "libimagequant.h"
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*/
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import "C"
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type Image struct {
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p *C.struct_liq_image
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w, h int
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released bool
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}
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// Callers MUST call Release() on the returned object to free memory.
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func NewImage(attr *Attributes, rgba32data string, width, height int, gamma float64) (*Image, error) {
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pImg := C.liq_image_create_rgba(attr.p, unsafe.Pointer(C.CString(rgba32data)), C.int(width), C.int(height), C.double(gamma))
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if pImg == nil {
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return nil, errors.New("Failed to create image (invalid argument)")
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}
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return &Image{
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p: pImg,
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w: width,
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h: height,
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released: false,
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}, nil
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}
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// Free memory. Callers must not use this object after Release has been called.
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func (this *Image) Release() {
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C.liq_image_destroy(this.p)
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this.released = true
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}
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func (this *Image) Quantize(attr *Attributes) (*Result, error) {
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res := Result{
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im: this,
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}
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liqerr := C.liq_image_quantize(this.p, attr.p, &res.p)
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if liqerr != C.LIQ_OK {
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return nil, translateError(liqerr)
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}
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return &res, nil
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}
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