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