func (this *Frame) ImgAlloc() error {
if ret := int(C.av_image_alloc(
(**C.uint8_t)(unsafe.Pointer(&this.avFrame.data)),
(*_Ctype_int)(unsafe.Pointer(&this.avFrame.linesize)),
C.int(this.Width()), C.int(this.Height()), int32(this.Format()), 32)); ret < 0 {
return errors.New(fmt.Sprintf("Unable to allocate raw image buffer: %v", AvError(ret)))
}
return nil
}
// @todo find better way to do allocation
func NewImage(w, h int, pixFmt int32, align int) (*Image, error) {
this := &Image{
avPointers: C.alloc_uint4(), // allocate uint8_t *pointers[4]
avLineSize: C.alloc_int4(), // allocate int[4]
}
ret := C.av_image_alloc(this.avPointers, this.avLineSize, C.int(w), C.int(h), pixFmt, C.int(align))
if ret < 0 {
return nil, errors.New(fmt.Sprintf("Unable to allocate image:%s", AvError(int(ret))))
}
this.bufsize = int(ret)
this.pixFmt = pixFmt
this.width = w
this.height = h
return this, nil
}