func lzoDecompress(src []byte, dst []byte) (int, error) {
dstLen := len(dst)
err := C.lzo1x_decompress((*C.uchar)(unsafe.Pointer(&src[0])), C.lzo_uint(len(src)),
(*C.uchar)(unsafe.Pointer(&dst[0])), (*C.lzo_uint)(unsafe.Pointer(&dstLen)), nil)
if err != 0 {
return 0, errno(err)
}
return dstLen, nil
}
// Decompress decompresses the byte array b passed in into the byte array o, and returns the size of the valid uncompressed data.
// If o is not large enough to hold the compressed data, an error is returned.
func (z *Compressor) Decompress(b []byte, o []byte) (uint, error) {
// both and input param (size of 'o') and output param (decompressed size)
out_size := uint(len(o))
err := C.lzo1x_decompress((*C.uchar)(unsafe.Pointer(&b[0])), C.lzo_uint(len(b)),
(*C.uchar)(unsafe.Pointer(&o[0])), (*C.lzo_uint)(unsafe.Pointer(&out_size)), nil)
// decompression failed :(
if err != 0 {
return out_size, Errno(err)
}
return out_size, nil
}
func lzoCompressBest(src []byte, dst []byte, dst_size *int) C.int {
wrkmem := make([]byte, int(C.lzo1x_999_mem_compress()))
return C.lzo1x_999_compress((*C.uchar)(unsafe.Pointer(&src[0])), C.lzo_uint(len(src)),
(*C.uchar)(unsafe.Pointer(&dst[0])), (*C.lzo_uint)(unsafe.Pointer(dst_size)),
unsafe.Pointer(&wrkmem[0]))
}
func lzo1x_999_compress(b []byte, out []byte, out_size *int, wrkmem []byte) C.int {
return C.lzo1x_999_compress((*C.uchar)(unsafe.Pointer(&b[0])), C.lzo_uint(len(b)),
(*C.uchar)(unsafe.Pointer(&out[0])), (*C.lzo_uint)(unsafe.Pointer(out_size)),
unsafe.Pointer(&wrkmem[0]))
}