76 lines
2.4 KiB
Rust
76 lines
2.4 KiB
Rust
use crate::{
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containers::{wrap_grid, ByteSlice},
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macros::{wrap, wrap_functions},
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};
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use servicepoint::{
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Brightness, BrightnessGrid, BrightnessGridCommand, ByteGrid, DataRef, Grid,
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Origin, Packet,
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};
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use std::{mem::transmute, ptr::NonNull};
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wrap_grid!(BrightnessGrid, Brightness);
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wrap_functions!(associate BrightnessGrid;
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/// Creates a new [BrightnessGrid] with the specified dimensions.
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///
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/// returns: [BrightnessGrid] initialized to 0.
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///
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/// # Examples
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/// ```C
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/// UdpSocket *connection = sp_udp_open("127.0.0.1:2342");
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/// if (connection == NULL)
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/// return 1;
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///
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/// BrightnessGrid *grid = sp_brightness_grid_new(2, 2);
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/// sp_brightness_grid_set(grid, 0, 0, 0);
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/// sp_brightness_grid_set(grid, 1, 1, 10);
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///
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/// TypedCommand *command = sp_command_char_brightness(grid);
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/// sp_udp_free(connection);
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/// ```
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fn new(width: val usize, height: val usize) -> move NonNull<BrightnessGrid> {
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BrightnessGrid::new(width, height)
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};
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/// Loads a [BrightnessGrid] with the specified dimensions from the provided data.
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///
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/// Any out of range values will be set to [Brightness::MAX] or [Brightness::MIN].
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///
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/// returns: new [BrightnessGrid] instance, or NULL in case of an error.
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fn load(
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width: val usize,
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height: val usize,
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data: slice ByteSlice,
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) -> move_some *mut BrightnessGrid {
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ByteGrid::load(width, height, data)
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.map(move |grid| grid.map(Brightness::saturating_from))
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};
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);
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wrap!(BrightnessGrid;
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/// Creates a [BrightnessGridCommand] and immediately turns that into a [Packet].
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///
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/// The provided [BrightnessGrid] gets consumed.
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///
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/// Returns NULL in case of an error.
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method try_into_packet(move grid, x: val usize, y: val usize) -> move_ok *mut Packet {
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Packet::try_from(BrightnessGridCommand {
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grid,
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origin: Origin::new(x, y),
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})
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};
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/// Gets an unsafe reference to the data of the instance.
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///
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/// The returned memory is valid for the lifetime of the grid.
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method data_ref_mut(mut instance) -> slice ByteSlice {
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//noinspection RsAssertEqual
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const _: () = assert!(size_of::<Brightness>() == 1);
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let br_slice = instance.data_ref_mut();
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unsafe {
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transmute::<&mut [Brightness], &mut [u8]>(br_slice)
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}
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};
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);
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