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Fix #1438 - round up memory size for decompressing glyph (#1441)

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Bill Hargen
2020-04-12 12:12:29 -04:00
committed by Gabor Kiss-Vamosi
parent 0c309e22e9
commit 4c2fcebedb
1 changed files with 5 additions and 4 deletions
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9
src/lv_font/lv_font_fmt_txt.c
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@@ -94,11 +94,12 @@ const uint8_t * lv_font_get_bitmap_fmt_txt(const lv_font_t * font, uint32_t unic
if(gsize == 0) return NULL; if(gsize == 0) return NULL;
uint32_t buf_size = gsize; uint32_t buf_size = gsize;
/*Compute memory size needed to hold decompressed glyph, rounding up*/
switch(fdsc->bpp) { switch(fdsc->bpp) {
case 1: buf_size = gsize >> 3; break; case 1: buf_size = (gsize + 7) >> 3; break;
case 2: buf_size = gsize >> 2; break; case 2: buf_size = (gsize + 3) >> 2; break;
case 3: buf_size = gsize >> 1; break; case 3: buf_size = (gsize + 1) >> 1; break;
case 4: buf_size = gsize >> 1; break; case 4: buf_size = (gsize + 1) >> 1; break;
} }
if(lv_mem_get_size(buf) < buf_size) { if(lv_mem_get_size(buf) < buf_size) {