Byte Struct

Pack and unpack structure as raw bytes with packed or bit field layout.

Example

use byte_struct::*;

bitfields!(
#[derive(PartialEq, Debug)]
GIFColorTableInfo: u8 {
global_color_table_flag: 1,
color_resolution: 3,
sort_flag: 1,
global_color_table_size: 3,
}
);

#[derive(ByteStruct, PartialEq, Debug)]
#[byte_struct_le]
struct GIFLogicalScreenDescriptor {
width: u16,
height: u16,
color_table_info: GIFColorTableInfo,
background_color_index: u8,
pixel_aspect_ratio: u8,
}

fn example() {
assert_eq!(GIFLogicalScreenDescriptor::BYTE_LEN, 7);
let raw_descriptor = [0x03, 0x00, 0x05, 0x00, 0xF7, 0x00, 0x00];
let descriptor = GIFLogicalScreenDescriptor::read_bytes(&raw_descriptor[..]);
assert_eq!(descriptor, GIFLogicalScreenDescriptor{
width: 3,
height: 5,
color_table_info: GIFColorTableInfo {
global_color_table_flag: 1,
color_resolution: 3,
sort_flag: 1,
global_color_table_size: 7,
},
background_color_index: 0,
pixel_aspect_ratio: 0,
});
let mut raw_another = [0; GIFLogicalScreenDescriptor::BYTE_LEN];
descriptor.write_bytes(&mut raw_another[..]);
assert_eq!(raw_descriptor, raw_another);
}