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/**
* @file lv_nuttx_image_cache.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_nuttx_cache.h"
#include "../../../lvgl.h"
#if LV_CACHE_DEF_SIZE > 0
#if LV_USE_NUTTX
#include <nuttx/mm/mm.h>
/*********************
* DEFINES
*********************/
#define HEAP_NAME "GImageCache"
#define img_cache_p (LV_GLOBAL_DEFAULT()->img_cache)
#define img_header_cache_p (LV_GLOBAL_DEFAULT()->img_header_cache)
#define ctx (*(lv_nuttx_ctx_image_cache_t **)&LV_GLOBAL_DEFAULT()->nuttx_ctx->image_cache)
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint8_t * mem;
uint32_t mem_size;
struct mm_heap_s * heap;
uint32_t heap_size;
} lv_nuttx_ctx_image_cache_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void * malloc_cb(size_t size_bytes, lv_color_format_t color_format);
static void free_cb(void * draw_buf);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_nuttx_image_cache_init(void)
{
lv_draw_buf_handlers_t * handlers = lv_draw_buf_get_handlers();
handlers->buf_malloc_cb = malloc_cb;
handlers->buf_free_cb = free_cb;
ctx = lv_malloc_zeroed(sizeof(lv_nuttx_ctx_image_cache_t));
LV_ASSERT_MALLOC(ctx);
ctx->mem_size = LV_CACHE_DEF_SIZE;
ctx->mem = malloc(ctx->mem_size);
LV_ASSERT_MALLOC(ctx->mem);
ctx->heap = mm_initialize(
HEAP_NAME,
ctx->mem,
ctx->mem_size
);
struct mallinfo info = mm_mallinfo(ctx->heap);
ctx->heap_size = info.arena;
LV_LOG_USER("heap info:");
LV_LOG_USER(" heap: %p", ctx->heap);
LV_LOG_USER(" mem: %p", ctx->mem);
LV_LOG_USER(" mem_size: %" LV_PRIu32, ctx->mem_size);
LV_LOG_USER(" arena: %d", info.arena);
LV_LOG_USER(" ordblks: %d", info.ordblks);
LV_LOG_USER(" aordblks: %d", info.aordblks);
LV_LOG_USER(" mxordblk: %d", info.mxordblk);
LV_LOG_USER(" uordblks: %d", info.uordblks);
LV_LOG_USER(" fordblks: %d", info.fordblks);
}
/**********************
* STATIC FUNCTIONS
**********************/
static void * malloc_cb(size_t size_bytes, lv_color_format_t color_format)
{
LV_UNUSED(color_format);
/*Allocate larger memory to be sure it can be aligned as needed*/
size_bytes += LV_DRAW_BUF_ALIGN - 1;
uint32_t cache_max_size = lv_cache_get_max_size(img_cache_p, NULL);
if(size_bytes > cache_max_size) {
LV_LOG_ERROR("data size (%" LV_PRIu32 ") is larger than max size (%" LV_PRIu32 ")",
(uint32_t)size_bytes,
cache_max_size);
return NULL;
}
while(1) {
void * mem = mm_malloc(ctx->heap, size_bytes);
if(mem) return mem;
LV_LOG_INFO("appears to be out of memory. attempting to evict one cache entry. with allocated size %" LV_PRIu32,
(uint32_t)size_bytes);
bool evict_res = lv_cache_evict_one(img_cache_p, NULL);
if(evict_res == false) {
LV_LOG_ERROR("failed to evict one cache entry");
return NULL;
}
}
}
static void free_cb(void * draw_buf)
{
mm_free(ctx->heap, draw_buf);
}
#endif /* LV_USE_NUTTX */
#endif /* LV_CACHE_DEF_SIZE > 0 */
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