func newInnerCBuffer(size int, dontResize ...bool) *innerCBuffer {
p := new(innerCBuffer)
if size > 0 {
p.cptr = C.webpMalloc(C.size_t(size))
p.data = (*[1 << 30]byte)(p.cptr)[0:size:size]
}
if len(dontResize) > 0 {
p.dontResize = dontResize[0]
}
return p
}
func (p *innerCBuffer) Resize(size int) error {
if size < 0 {
return errors.New("webp: cBuffer.Resize, bad size!")
}
if p.dontResize {
return errors.New("webp: cBuffer.Resize, donot resize!")
}
if n := len(p.data); n > 0 && n != size {
C.webpFree(p.cptr)
p.cptr = nil
p.data = nil
}
p.Close()
if size > 0 {
p.cptr = C.webpMalloc(C.size_t(size))
p.data = (*[1 << 30]byte)(p.cptr)[0:size:size]
}
return nil
}