add sp_bitmap_into_bitvec, sp_bitmap_from_bitvec

This commit is contained in:
Vinzenz Schroeter 2025-04-12 18:35:48 +02:00
parent fd6f9198f3
commit 0af8ea98dd
2 changed files with 42 additions and 1 deletions

View file

@ -388,6 +388,15 @@ void sp_bitmap_fill(Bitmap */*notnull*/ bitmap, bool value);
*/
void sp_bitmap_free(Bitmap */*notnull*/ bitmap);
/**
* Tries to convert the BitVec to a Bitmap.
*
* The provided BitVec gets consumed.
*
* Returns NULL in case of error.
*/
Bitmap *sp_bitmap_from_bitvec(size_t width, SPBitVec */*notnull*/ bitvec);
/**
* Gets the current value at the specified position in the [Bitmap].
*
@ -411,6 +420,11 @@ bool sp_bitmap_get(Bitmap */*notnull*/ bitmap, size_t x, size_t y);
*/
size_t sp_bitmap_height(Bitmap */*notnull*/ bitmap);
/**
* Consumes the Bitmap and returns the contained BitVec
*/
SPBitVec */*notnull*/ sp_bitmap_into_bitvec(Bitmap */*notnull*/ bitmap);
/**
* Loads a [Bitmap] with the specified dimensions from the provided data.
*

View file

@ -1,5 +1,5 @@
use crate::byte_slice::ByteSlice;
use crate::{heap_drop, heap_move, heap_move_nonnull};
use crate::{heap_drop, heap_move, heap_move_nonnull, SPBitVec};
use servicepoint::{Bitmap, DataRef, Grid};
use std::ptr::NonNull;
@ -68,6 +68,24 @@ pub unsafe extern "C" fn sp_bitmap_load(
}
}
/// Tries to convert the BitVec to a Bitmap.
///
/// The provided BitVec gets consumed.
///
/// Returns NULL in case of error.
#[no_mangle]
pub unsafe extern "C" fn sp_bitmap_from_bitvec(
width: usize,
bitvec: NonNull<SPBitVec>,
) -> *mut Bitmap {
let bitvec = unsafe { *Box::from_raw(bitvec.as_ptr()) };
if let Ok(bitmap) = Bitmap::from_bitvec(width, bitvec.0) {
heap_move(bitmap)
} else {
std::ptr::null_mut()
}
}
/// Clones a [Bitmap].
#[no_mangle]
pub unsafe extern "C" fn sp_bitmap_clone(
@ -172,3 +190,12 @@ pub unsafe extern "C" fn sp_bitmap_unsafe_data_ref(
) -> ByteSlice {
unsafe { ByteSlice::from_slice(bitmap.as_mut().data_ref_mut()) }
}
/// Consumes the Bitmap and returns the contained BitVec
#[no_mangle]
pub unsafe extern "C" fn sp_bitmap_into_bitvec(
bitmap: NonNull<Bitmap>,
) -> NonNull<SPBitVec> {
let bitmap = unsafe { *Box::from_raw(bitmap.as_ptr()) };
heap_move_nonnull(SPBitVec(bitmap.into()))
}