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feat(png): reallocate memory to reduce memory usage (#3922)

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Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
This commit is contained in:
_VIFEXTech
2023-01-13 16:13:49 +08:00
committed by GitHub
parent bc0d469a51
commit bc868d33d4
1 changed files with 12 additions and 5 deletions
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src/libs/png/lv_png.c
+12 -5
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@@ -27,7 +27,7 @@
static lv_res_t decoder_info(struct _lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header);
static lv_res_t decoder_open(lv_img_decoder_t * dec, lv_img_decoder_dsc_t * dsc);
static void decoder_close(lv_img_decoder_t * dec, lv_img_decoder_dsc_t * dsc);
static void convert_color_depth(uint8_t * img, uint32_t px_cnt);
static void convert_color_depth(uint8_t ** img_p, uint32_t px_cnt);
/**********************
* STATIC VARIABLES
@@ -185,7 +185,7 @@ static lv_res_t decoder_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t *
}
/*Convert the image to the system's color depth*/
convert_color_depth(img_data, png_width * png_height);
convert_color_depth(&img_data, png_width * png_height);
dsc->img_data = img_data;
return LV_RES_OK; /*The image is fully decoded. Return with its pointer*/
}
@@ -207,7 +207,7 @@ static lv_res_t decoder_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t *
}
/*Convert the image to the system's color depth*/
convert_color_depth(img_data, png_width * png_height);
convert_color_depth(&img_data, png_width * png_height);
dsc->img_data = img_data;
return LV_RES_OK; /*Return with its pointer*/
@@ -233,12 +233,14 @@ static void decoder_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc
* @param img the ARGB888 image
* @param px_cnt number of pixels in `img`
*/
static void convert_color_depth(uint8_t * img, uint32_t px_cnt)
static void convert_color_depth(uint8_t ** img_p, uint32_t px_cnt)
{
uint8_t * img = *img_p;
#if LV_COLOR_DEPTH == 32
lv_color32_t * img_argb = (lv_color32_t *)img;
lv_color_t c;
lv_color_t * img_c = (lv_color_t *) img;
lv_color_t * img_c = (lv_color_t *)img;
uint32_t i;
for(i = 0; i < px_cnt; i++) {
c = lv_color_make(img_argb[i].ch.red, img_argb[i].ch.green, img_argb[i].ch.blue);
@@ -274,6 +276,11 @@ static void convert_color_depth(uint8_t * img, uint32_t px_cnt)
img[i * 2 + 0] = b > 128 ? 1 : 0;
}
#endif
#if LV_COLOR_DEPTH != 32
/*Reallocate memory to reduce memory usage*/
*img_p = lv_realloc(img, LV_IMG_PX_SIZE_ALPHA_BYTE * px_cnt);
#endif
}
#endif /*LV_USE_PNG*/