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change get_glyph_size() to font_glyphs_to_bufsize(). fixes a bug when font glyph buffer < font header

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27911 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Fred Bauer 2010-08-27 18:25:23 +00:00
parent aaa864ea03
commit cf8f526d16
3 changed files with 10 additions and 6 deletions
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12
firmware/font.c
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@ -632,10 +632,10 @@ void glyph_cache_save(struct font* pf)
return;
}
int get_glyph_size(const char *path)
int font_glyphs_to_bufsize(const char *path, int glyphs)
{
struct font f;
int overhead;
int bufsize;
char buf[FONT_HEADER_SIZE];
f.buffer_start = buf;
@ -656,9 +656,13 @@ int get_glyph_size(const char *path)
}
close(f.fd);
overhead = LRU_SLOT_OVERHEAD + sizeof(struct font_cache_entry) +
bufsize = LRU_SLOT_OVERHEAD + sizeof(struct font_cache_entry) +
sizeof( unsigned short);
return overhead + (f.maxwidth * ((f.height + 7) / 8));
bufsize += f.maxwidth * ((f.height + 7) / 8);
bufsize *= glyphs;
if ( bufsize < FONT_HEADER_SIZE )
bufsize = FONT_HEADER_SIZE;
return bufsize;
}
static int ushortcmp(const void *a, const void *b)