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fix(draw_buf): use LV_ROUND_UP to align draw buffer address

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From test config lv_test_conf.h:

/*Use non power of 2 to avoid the case when `malloc` returns aligned pointer by default, and use a large value be sure any issues will cause crash*/
\#define LV_DRAW_BUF_ALIGN                       852

We need to support non-power-of-2 draw buffer alignement.
Introduce LV_ROUND_UP in lv_math.h and use it instead.

Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>
This commit is contained in:
Xu Xingliang
2024-04-22 14:08:28 +08:00
committed by Neo Xu
parent 5894d53840
commit 79b64c8bd8
2 changed files with 5 additions and 2 deletions
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4
src/draw/lv_draw_buf.c
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@@ -10,6 +10,7 @@
#include "lv_draw_buf.h"
#include "../stdlib/lv_string.h"
#include "../core/lv_global.h"
#include "../misc/lv_math.h"
/*********************
* DEFINES
@@ -522,8 +523,7 @@ static void * buf_align(void * buf, lv_color_format_t color_format)
uint8_t * buf_u8 = buf;
if(buf_u8) {
buf_u8 += LV_DRAW_BUF_ALIGN - 1;
buf_u8 = (uint8_t *)((lv_uintptr_t) buf_u8 & ~(LV_DRAW_BUF_ALIGN - 1));
buf_u8 = (uint8_t *)LV_ROUND_UP((lv_uintptr_t)buf_u8, LV_DRAW_BUF_ALIGN);
}
return buf_u8;
}

3
src/misc/lv_math.h
View File

@@ -29,6 +29,9 @@ extern "C" {
/*Align up value x to align, align must be a power of two*/
#define LV_ALIGN_UP(x, align) (((x) + ((align) - 1)) & ~((align) - 1))
/*Round up value x to round, round can be any integer number*/
#define LV_ROUND_UP(x, round) ((((x) + ((round) - 1)) / (round)) * (round))
/**********************
* TYPEDEFS
**********************/