int32,0x5343434d
int32,0x0
int32,SA_WIDTHDPI
int32,SA_HEIGHTDPI
int32,SA_BYTESPERLINE
int32,SA_HEIGHT
int32,SA_WIDTH
int32,SA_NCOLORS
int32,SA_COLORBITS
int32,SA_PASS
int32,0x0 //compress
int32,SA_BIDIRECTION
char,[16]SA_COLORID
char,[256]SA_FILENAME_UTF16
int32,[4]0x0//reserved



