servicepoint/servicepoint-binding-c
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wip remove newtypes, re-export constants from base lib

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This commit is contained in:
Vinzenz Schroeter 2025-04-12 12:08:49 +02:00
parent d215f7199e
commit bb90af3a57
8 changed files with 150 additions and 168 deletions
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1
cbindgen.toml
View file

@ -25,6 +25,7 @@ sort_by = "Name"
[parse]
parse_deps = true
include = ["servicepoint"]
extra_bindings = ["servicepoint"]
[parse.expand]
features = ["full"]

4
example/main.c
View file

@ -6,13 +6,13 @@ int main(void) {
if (connection == NULL)
return 1;
Bitmap *pixels = sp_bitmap_new(SP_PIXEL_WIDTH, SP_PIXEL_HEIGHT);
Bitmap *pixels = sp_bitmap_new(PIXEL_WIDTH, PIXEL_HEIGHT);
if (pixels == NULL)
return 1;
sp_bitmap_fill(pixels, true);
Command *command = sp_command_bitmap_linear_win(0, 0, pixels, SP_COMPRESSION_CODE_UNCOMPRESSED);
Command *command = sp_command_bitmap_linear_win(0, 0, pixels, COMPRESSION_CODE_UNCOMPRESSED);
if (command == NULL)
return 1;

157
include/servicepoint.h
View file

@ -8,6 +8,35 @@
#include <stdint.h>
#include <stdlib.h>
/**
* pixel count on whole screen
*/
#define PIXEL_COUNT (PIXEL_WIDTH * PIXEL_HEIGHT)
/**
* Display height in pixels
*
* # Examples
*
* ```rust
* # use servicepoint::{PIXEL_HEIGHT, PIXEL_WIDTH, Bitmap};
* let grid = Bitmap::new(PIXEL_WIDTH, PIXEL_HEIGHT);
* ```
*/
#define PIXEL_HEIGHT (TILE_HEIGHT * TILE_SIZE)
/**
* Display width in pixels
*
* # Examples
*
* ```rust
* # use servicepoint::{PIXEL_HEIGHT, PIXEL_WIDTH, Bitmap};
* let grid = Bitmap::new(PIXEL_WIDTH, PIXEL_HEIGHT);
* ```
*/
#define PIXEL_WIDTH (TILE_WIDTH * TILE_SIZE)
/**
* Count of possible brightness values
*/
@ -23,40 +52,60 @@
*/
#define SP_BRIGHTNESS_MIN 0
/**
* pixel count on whole screen
*/
#define SP_PIXEL_COUNT (SP_PIXEL_WIDTH * SP_PIXEL_HEIGHT)
/**
* Display height in pixels
*/
#define SP_PIXEL_HEIGHT (SP_TILE_HEIGHT * SP_TILE_SIZE)
/**
* Display width in pixels
*/
#define SP_PIXEL_WIDTH (SP_TILE_WIDTH * SP_TILE_SIZE)
/**
* Display tile count in the y-direction
*
* # Examples
*
* ```rust
* # use servicepoint::{Cp437Grid, TILE_HEIGHT, TILE_WIDTH};
* let grid = Cp437Grid::new(TILE_WIDTH, TILE_HEIGHT);
* ```
*/
#define SP_TILE_HEIGHT 20
#define TILE_HEIGHT 20
/**
* size of a single tile in one dimension
*/
#define SP_TILE_SIZE 8
#define TILE_SIZE 8
/**
* Display tile count in the x-direction
*
* # Examples
*
* ```rust
* # use servicepoint::{Cp437Grid, TILE_HEIGHT, TILE_WIDTH};
* let grid = Cp437Grid::new(TILE_WIDTH, TILE_HEIGHT);
* ```
*/
#define SP_TILE_WIDTH 56
#define TILE_WIDTH 56
/**
* Specifies the kind of compression to use.
* Specifies the kind of compression to use. Availability depends on features.
*
* # Examples
*
* ```rust
* # use servicepoint::*;
* // create command without payload compression
* # let pixels = Bitmap::max_sized();
* _ = BitmapCommand {
* origin: Origin::ZERO,
* bitmap: pixels,
* compression: CompressionCode::Uncompressed
* };
*
* // create command with payload compressed with lzma and appropriate header flags
* # let pixels = Bitmap::max_sized();
* _ = BitmapCommand {
* origin: Origin::ZERO,
* bitmap: pixels,
* compression: CompressionCode::Lzma
* };
* ```
*/
enum SPCompressionCode
enum CompressionCode
#ifdef __cplusplus
: uint16_t
#endif // __cplusplus
@ -64,26 +113,26 @@ enum SPCompressionCode
/**
* no compression
*/
SP_COMPRESSION_CODE_UNCOMPRESSED = 0,
COMPRESSION_CODE_UNCOMPRESSED = 0,
/**
* compress using flate2 with zlib header
*/
SP_COMPRESSION_CODE_ZLIB = 26490,
COMPRESSION_CODE_ZLIB = 26490,
/**
* compress using bzip2
*/
SP_COMPRESSION_CODE_BZIP2 = 25210,
COMPRESSION_CODE_BZIP2 = 25210,
/**
* compress using lzma
*/
SP_COMPRESSION_CODE_LZMA = 27770,
COMPRESSION_CODE_LZMA = 27770,
/**
* compress using Zstandard
*/
SP_COMPRESSION_CODE_ZSTD = 31347,
COMPRESSION_CODE_ZSTD = 31347,
};
#ifndef __cplusplus
typedef uint16_t SPCompressionCode;
typedef uint16_t CompressionCode;
#endif // __cplusplus
/**
@ -245,22 +294,6 @@ typedef ValueGrid_char CharGrid;
*/
typedef ValueGrid_u8 Cp437Grid;
/**
* A C-wrapper for grid containing codepage 437 characters.
*
* The encoding is currently not enforced.
*
* # Examples
*
* ```C
* Cp437Grid grid = sp_cp437_grid_new(4, 3);
* sp_cp437_grid_fill(grid, '?');
* sp_cp437_grid_set(grid, 0, 0, '!');
* sp_cp437_grid_free(grid);
* ```
*/
typedef Cp437Grid SPCp437Grid;
/**
* A raw header.
*
@ -1189,7 +1222,7 @@ size_t sp_char_grid_width(const CharGrid *char_grid);
*/
Command *sp_command_bitmap_linear(size_t offset,
SPBitVec *bit_vec,
SPCompressionCode compression);
CompressionCode compression);
/**
* Set pixel data according to an and-mask starting at the offset.
@ -1220,7 +1253,7 @@ Command *sp_command_bitmap_linear(size_t offset,
*/
Command *sp_command_bitmap_linear_and(size_t offset,
SPBitVec *bit_vec,
SPCompressionCode compression);
CompressionCode compression);
/**
* Set pixel data according to an or-mask starting at the offset.
@ -1251,7 +1284,7 @@ Command *sp_command_bitmap_linear_and(size_t offset,
*/
Command *sp_command_bitmap_linear_or(size_t offset,
SPBitVec *bit_vec,
SPCompressionCode compression);
CompressionCode compression);
/**
* Sets a window of pixels to the specified values.
@ -1278,7 +1311,7 @@ Command *sp_command_bitmap_linear_or(size_t offset,
Command *sp_command_bitmap_linear_win(size_t x,
size_t y,
Bitmap *bitmap,
SPCompressionCode compression);
CompressionCode compression);
/**
* Set pixel data according to a xor-mask starting at the offset.
@ -1309,7 +1342,7 @@ Command *sp_command_bitmap_linear_win(size_t x,
*/
Command *sp_command_bitmap_linear_xor(size_t offset,
SPBitVec *bit_vec,
SPCompressionCode compression);
CompressionCode compression);
/**
* Set the brightness of all tiles to the same value.
@ -1417,7 +1450,7 @@ Command *sp_command_clone(const Command *command);
*/
Command *sp_command_cp437_data(size_t x,
size_t y,
SPCp437Grid *grid);
Cp437Grid *grid);
/**
* A yet-to-be-tested command.
@ -1631,7 +1664,7 @@ bool sp_connection_send_packet(const UdpConnection *connection, Packet *packet);
* - the returned instance is freed in some way, either by using a consuming function or
* by explicitly calling `sp_cp437_grid_free`.
*/
SPCp437Grid *sp_cp437_grid_clone(const SPCp437Grid *cp437_grid);
Cp437Grid *sp_cp437_grid_clone(const Cp437Grid *cp437_grid);
/**
* Sets the value of all cells in the [SPCp437Grid].
@ -1652,7 +1685,7 @@ SPCp437Grid *sp_cp437_grid_clone(const SPCp437Grid *cp437_grid);
* - `cp437_grid` points to a valid [SPCp437Grid]
* - `cp437_grid` is not written to or read from concurrently
*/
void sp_cp437_grid_fill(SPCp437Grid *cp437_grid, uint8_t value);
void sp_cp437_grid_fill(Cp437Grid *cp437_grid, uint8_t value);
/**
* Deallocates a [SPCp437Grid].
@ -1671,7 +1704,7 @@ void sp_cp437_grid_fill(SPCp437Grid *cp437_grid, uint8_t value);
*
* [SPCommand]: [crate::SPCommand]
*/
void sp_cp437_grid_free(SPCp437Grid *cp437_grid);
void sp_cp437_grid_free(Cp437Grid *cp437_grid);
/**
* Gets the current value at the specified position.
@ -1693,7 +1726,7 @@ void sp_cp437_grid_free(SPCp437Grid *cp437_grid);
* - `cp437_grid` points to a valid [SPCp437Grid]
* - `cp437_grid` is not written to concurrently
*/
uint8_t sp_cp437_grid_get(const SPCp437Grid *cp437_grid, size_t x, size_t y);
uint8_t sp_cp437_grid_get(const Cp437Grid *cp437_grid, size_t x, size_t y);
/**
* Gets the height of the [SPCp437Grid] instance.
@ -1712,7 +1745,7 @@ uint8_t sp_cp437_grid_get(const SPCp437Grid *cp437_grid, size_t x, size_t y);
*
* - `cp437_grid` points to a valid [SPCp437Grid]
*/
size_t sp_cp437_grid_height(const SPCp437Grid *cp437_grid);
size_t sp_cp437_grid_height(const Cp437Grid *cp437_grid);
/**
* Loads a [SPCp437Grid] with the specified dimensions from the provided data.
@ -1733,10 +1766,10 @@ size_t sp_cp437_grid_height(const SPCp437Grid *cp437_grid);
* - the returned instance is freed in some way, either by using a consuming function or
* by explicitly calling `sp_cp437_grid_free`.
*/
SPCp437Grid *sp_cp437_grid_load(size_t width,
size_t height,
const uint8_t *data,
size_t data_length);
Cp437Grid *sp_cp437_grid_load(size_t width,
size_t height,
const uint8_t *data,
size_t data_length);
/**
* Creates a new [SPCp437Grid] with the specified dimensions.
@ -1750,8 +1783,8 @@ SPCp437Grid *sp_cp437_grid_load(size_t width,
* - the returned instance is freed in some way, either by using a consuming function or
* by explicitly calling `sp_cp437_grid_free`.
*/
SPCp437Grid *sp_cp437_grid_new(size_t width,
size_t height);
Cp437Grid *sp_cp437_grid_new(size_t width,
size_t height);
/**
* Sets the value of the specified position in the [SPCp437Grid].
@ -1778,7 +1811,7 @@ SPCp437Grid *sp_cp437_grid_new(size_t width,
*
* [SPBitVec]: [crate::SPBitVec]
*/
void sp_cp437_grid_set(SPCp437Grid *cp437_grid,
void sp_cp437_grid_set(Cp437Grid *cp437_grid,
size_t x,
size_t y,
uint8_t value);
@ -1800,7 +1833,7 @@ void sp_cp437_grid_set(SPCp437Grid *cp437_grid,
* - the returned memory range is never accessed after the passed [SPCp437Grid] has been freed
* - the returned memory range is never accessed concurrently, either via the [SPCp437Grid] or directly
*/
SPByteSlice sp_cp437_grid_unsafe_data_ref(SPCp437Grid *cp437_grid);
SPByteSlice sp_cp437_grid_unsafe_data_ref(Cp437Grid *cp437_grid);
/**
* Gets the width of the [SPCp437Grid] instance.
@ -1819,7 +1852,7 @@ SPByteSlice sp_cp437_grid_unsafe_data_ref(SPCp437Grid *cp437_grid);
*
* - `cp437_grid` points to a valid [SPCp437Grid]
*/
size_t sp_cp437_grid_width(const SPCp437Grid *cp437_grid);
size_t sp_cp437_grid_width(const Cp437Grid *cp437_grid);
/**
* Clones a [SPPacket].

2
src/byte_slice.rs
View file

@ -2,7 +2,6 @@
use std::ptr::NonNull;
#[repr(C)]
/// Represents a span of memory (`&mut [u8]` ) as a struct usable by C code.
///
/// You should not create an instance of this type in your C code.
@ -16,6 +15,7 @@ use std::ptr::NonNull;
/// the function returning this type.
/// - an instance of this created from C is never passed to a consuming function, as the rust code
/// will try to free the memory of a potentially separate allocator.
#[repr(C)]
pub struct SPByteSlice {
/// The start address of the memory
pub start: NonNull<u8>,

20
src/command.rs
View file

@ -2,8 +2,8 @@
//!
//! prefix `sp_command_`
use crate::{SPBitVec, SPCompressionCode, SPCp437Grid};
use servicepoint::{BinaryOperation, BrightnessGrid, CharGrid, GlobalBrightnessCommand, Packet, TypedCommand};
use crate::{SPBitVec};
use servicepoint::{BinaryOperation, BrightnessGrid, CharGrid, CompressionCode, Cp437Grid, GlobalBrightnessCommand, Packet, TypedCommand};
use std::ptr::NonNull;
/// A low-level display command.
@ -225,7 +225,7 @@ pub unsafe extern "C" fn sp_command_char_brightness(
pub unsafe extern "C" fn sp_command_bitmap_linear(
offset: usize,
bit_vec: *mut SPBitVec,
compression: SPCompressionCode,
compression: CompressionCode,
) -> *mut TypedCommand {
unsafe {
sp_command_bitmap_linear_internal(
@ -266,7 +266,7 @@ pub unsafe extern "C" fn sp_command_bitmap_linear(
pub unsafe extern "C" fn sp_command_bitmap_linear_and(
offset: usize,
bit_vec: *mut SPBitVec,
compression: SPCompressionCode,
compression: CompressionCode,
) -> *mut TypedCommand {
unsafe {
sp_command_bitmap_linear_internal(
@ -307,7 +307,7 @@ pub unsafe extern "C" fn sp_command_bitmap_linear_and(
pub unsafe extern "C" fn sp_command_bitmap_linear_or(
offset: usize,
bit_vec: *mut SPBitVec,
compression: SPCompressionCode,
compression: CompressionCode,
) -> *mut TypedCommand {
unsafe {
sp_command_bitmap_linear_internal(
@ -348,7 +348,7 @@ pub unsafe extern "C" fn sp_command_bitmap_linear_or(
pub unsafe extern "C" fn sp_command_bitmap_linear_xor(
offset: usize,
bit_vec: *mut SPBitVec,
compression: SPCompressionCode,
compression: CompressionCode,
) -> *mut TypedCommand {
unsafe {
sp_command_bitmap_linear_internal(
@ -364,7 +364,7 @@ pub unsafe extern "C" fn sp_command_bitmap_linear_xor(
unsafe fn sp_command_bitmap_linear_internal(
offset: usize,
bit_vec: *mut SPBitVec,
compression: SPCompressionCode,
compression: CompressionCode,
operation: BinaryOperation,
) -> *mut TypedCommand {
assert!(!bit_vec.is_null());
@ -405,14 +405,14 @@ unsafe fn sp_command_bitmap_linear_internal(
pub unsafe extern "C" fn sp_command_cp437_data(
x: usize,
y: usize,
grid: *mut SPCp437Grid,
grid: *mut Cp437Grid,
) -> NonNull<TypedCommand> {
assert!(!grid.is_null());
let grid = *unsafe { Box::from_raw(grid) };
let result = Box::new(
servicepoint::Cp437GridCommand {
origin: servicepoint::Origin::new(x, y),
grid: grid.0,
grid,
}
.into(),
);
@ -480,7 +480,7 @@ pub unsafe extern "C" fn sp_command_bitmap_linear_win(
x: usize,
y: usize,
bitmap: *mut servicepoint::Bitmap,
compression: SPCompressionCode,
compression: CompressionCode,
) -> *mut TypedCommand {
assert!(!bitmap.is_null());
let bitmap = unsafe { *Box::from_raw(bitmap) };

48
src/constants.rs
View file

@ -1,48 +0,0 @@
//! re-exported constants for use in C
use servicepoint::CompressionCode;
use std::time::Duration;
/// size of a single tile in one dimension
pub const SP_TILE_SIZE: usize = 8;
/// Display tile count in the x-direction
pub const SP_TILE_WIDTH: usize = 56;
/// Display tile count in the y-direction
pub const SP_TILE_HEIGHT: usize = 20;
/// Display width in pixels
pub const SP_PIXEL_WIDTH: usize = SP_TILE_WIDTH * SP_TILE_SIZE;
/// Display height in pixels
pub const SP_PIXEL_HEIGHT: usize = SP_TILE_HEIGHT * SP_TILE_SIZE;
/// pixel count on whole screen
pub const SP_PIXEL_COUNT: usize = SP_PIXEL_WIDTH * SP_PIXEL_HEIGHT;
/// Actual hardware limit is around 28-29ms/frame. Rounded up for less dropped packets.
pub const SP_FRAME_PACING_MS: u128 = Duration::from_millis(30).as_millis();
/// Specifies the kind of compression to use.
#[repr(u16)]
pub enum SPCompressionCode {
/// no compression
Uncompressed = 0x0,
/// compress using flate2 with zlib header
Zlib = 0x677a,
/// compress using bzip2
Bzip2 = 0x627a,
/// compress using lzma
Lzma = 0x6c7a,
/// compress using Zstandard
Zstd = 0x7a73,
}
impl TryFrom<SPCompressionCode> for CompressionCode {
type Error = ();
fn try_from(value: SPCompressionCode) -> Result<Self, Self::Error> {
CompressionCode::try_from(value as u16).map_err(|_| ())
}
}

78
src/cp437_grid.rs
View file

@ -1,32 +1,25 @@
//! C functions for interacting with [SPCp437Grid]s
//!
//! prefix `sp_cp437_grid_`
//!
//!
//! A C-wrapper for grid containing codepage 437 characters.
//!
//! The encoding is currently not enforced.
//!
//! # Examples
//!
//! ```C
//! Cp437Grid grid = sp_cp437_grid_new(4, 3);
//! sp_cp437_grid_fill(grid, '?');
//! sp_cp437_grid_set(grid, 0, 0, '!');
//! sp_cp437_grid_free(grid);
//! ```
use crate::SPByteSlice;
use servicepoint::{DataRef, Grid};
use servicepoint::{Cp437Grid, DataRef, Grid};
use std::ptr::NonNull;
/// A C-wrapper for grid containing codepage 437 characters.
///
/// The encoding is currently not enforced.
///
/// # Examples
///
/// ```C
/// Cp437Grid grid = sp_cp437_grid_new(4, 3);
/// sp_cp437_grid_fill(grid, '?');
/// sp_cp437_grid_set(grid, 0, 0, '!');
/// sp_cp437_grid_free(grid);
/// ```
#[repr(transparent)]
pub struct SPCp437Grid(pub(crate) servicepoint::Cp437Grid);
impl Clone for SPCp437Grid {
fn clone(&self) -> Self {
SPCp437Grid(self.0.clone())
}
}
/// Creates a new [SPCp437Grid] with the specified dimensions.
///
/// returns: [SPCp437Grid] initialized to 0. Will never return NULL.
@ -41,9 +34,8 @@ impl Clone for SPCp437Grid {
pub unsafe extern "C" fn sp_cp437_grid_new(
width: usize,
height: usize,
) -> NonNull<SPCp437Grid> {
let result =
Box::new(SPCp437Grid(servicepoint::Cp437Grid::new(width, height)));
) -> NonNull<Cp437Grid> {
let result = Box::new(Cp437Grid::new(width, height));
NonNull::from(Box::leak(result))
}
@ -70,12 +62,12 @@ pub unsafe extern "C" fn sp_cp437_grid_load(
height: usize,
data: *const u8,
data_length: usize,
) -> *mut SPCp437Grid {
) -> *mut Cp437Grid {
assert!(data.is_null());
let data = unsafe { std::slice::from_raw_parts(data, data_length) };
let grid = servicepoint::Cp437Grid::load(width, height, data);
let grid = Cp437Grid::load(width, height, data);
if let Some(grid) = grid {
Box::leak(Box::new(SPCp437Grid(grid)))
Box::leak(Box::new(grid))
} else {
std::ptr::null_mut()
}
@ -99,8 +91,8 @@ pub unsafe extern "C" fn sp_cp437_grid_load(
/// by explicitly calling `sp_cp437_grid_free`.
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_clone(
cp437_grid: *const SPCp437Grid,
) -> NonNull<SPCp437Grid> {
cp437_grid: *const Cp437Grid,
) -> NonNull<Cp437Grid> {
assert!(!cp437_grid.is_null());
let result = Box::new(unsafe { (*cp437_grid).clone() });
NonNull::from(Box::leak(result))
@ -122,7 +114,7 @@ pub unsafe extern "C" fn sp_cp437_grid_clone(
///
/// [SPCommand]: [crate::SPCommand]
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_free(cp437_grid: *mut SPCp437Grid) {
pub unsafe extern "C" fn sp_cp437_grid_free(cp437_grid: *mut Cp437Grid) {
assert!(!cp437_grid.is_null());
_ = unsafe { Box::from_raw(cp437_grid) };
}
@ -147,12 +139,12 @@ pub unsafe extern "C" fn sp_cp437_grid_free(cp437_grid: *mut SPCp437Grid) {
/// - `cp437_grid` is not written to concurrently
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_get(
cp437_grid: *const SPCp437Grid,
cp437_grid: *const Cp437Grid,
x: usize,
y: usize,
) -> u8 {
assert!(!cp437_grid.is_null());
unsafe { (*cp437_grid).0.get(x, y) }
unsafe { (*cp437_grid).get(x, y) }
}
/// Sets the value of the specified position in the [SPCp437Grid].
@ -180,13 +172,13 @@ pub unsafe extern "C" fn sp_cp437_grid_get(
/// [SPBitVec]: [crate::SPBitVec]
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_set(
cp437_grid: *mut SPCp437Grid,
cp437_grid: *mut Cp437Grid,
x: usize,
y: usize,
value: u8,
) {
assert!(!cp437_grid.is_null());
unsafe { (*cp437_grid).0.set(x, y, value) };
unsafe { (*cp437_grid).set(x, y, value) };
}
/// Sets the value of all cells in the [SPCp437Grid].
@ -208,11 +200,11 @@ pub unsafe extern "C" fn sp_cp437_grid_set(
/// - `cp437_grid` is not written to or read from concurrently
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_fill(
cp437_grid: *mut SPCp437Grid,
cp437_grid: *mut Cp437Grid,
value: u8,
) {
assert!(!cp437_grid.is_null());
unsafe { (*cp437_grid).0.fill(value) };
unsafe { (*cp437_grid).fill(value) };
}
/// Gets the width of the [SPCp437Grid] instance.
@ -232,10 +224,10 @@ pub unsafe extern "C" fn sp_cp437_grid_fill(
/// - `cp437_grid` points to a valid [SPCp437Grid]
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_width(
cp437_grid: *const SPCp437Grid,
cp437_grid: *const Cp437Grid,
) -> usize {
assert!(!cp437_grid.is_null());
unsafe { (*cp437_grid).0.width() }
unsafe { (*cp437_grid).width() }
}
/// Gets the height of the [SPCp437Grid] instance.
@ -255,10 +247,10 @@ pub unsafe extern "C" fn sp_cp437_grid_width(
/// - `cp437_grid` points to a valid [SPCp437Grid]
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_height(
cp437_grid: *const SPCp437Grid,
cp437_grid: *const Cp437Grid,
) -> usize {
assert!(!cp437_grid.is_null());
unsafe { (*cp437_grid).0.height() }
unsafe { (*cp437_grid).height() }
}
/// Gets an unsafe reference to the data of the [SPCp437Grid] instance.
@ -278,7 +270,7 @@ pub unsafe extern "C" fn sp_cp437_grid_height(
/// - the returned memory range is never accessed concurrently, either via the [SPCp437Grid] or directly
#[no_mangle]
pub unsafe extern "C" fn sp_cp437_grid_unsafe_data_ref(
cp437_grid: *mut SPCp437Grid,
cp437_grid: *mut Cp437Grid,
) -> SPByteSlice {
unsafe {SPByteSlice::from_slice((*cp437_grid).0.data_ref_mut()) }
unsafe {SPByteSlice::from_slice((*cp437_grid).data_ref_mut()) }
}

8
src/lib.rs
View file

@ -32,7 +32,6 @@ pub use crate::byte_slice::*;
pub use crate::char_grid::*;
pub use crate::command::*;
pub use crate::connection::*;
pub use crate::constants::*;
pub use crate::cp437_grid::*;
pub use crate::packet::*;
@ -43,6 +42,11 @@ mod byte_slice;
mod char_grid;
mod command;
mod connection;
mod constants;
mod cp437_grid;
mod packet;
use std::time::Duration;
/// Actual hardware limit is around 28-29ms/frame. Rounded up for less dropped packets.
pub const SP_FRAME_PACING_MS: u128 = Duration::from_millis(30).as_millis();