diff options
Diffstat (limited to 'src/3rdparty/freetype/src/pfr/pfrsbit.c')
| -rw-r--r-- | src/3rdparty/freetype/src/pfr/pfrsbit.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/src/3rdparty/freetype/src/pfr/pfrsbit.c b/src/3rdparty/freetype/src/pfr/pfrsbit.c index 45ff6663b3..d2f17dc9ce 100644 --- a/src/3rdparty/freetype/src/pfr/pfrsbit.c +++ b/src/3rdparty/freetype/src/pfr/pfrsbit.c @@ -4,7 +4,7 @@ /* */ /* FreeType PFR bitmap loader (body). */ /* */ -/* Copyright 2002, 2003, 2006 by */ +/* Copyright 2002, 2003, 2006, 2009 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -600,8 +600,8 @@ /* get the bitmap metrics */ { - FT_Long xpos, ypos, advance; - FT_UInt xsize, ysize, format; + FT_Long xpos = 0, ypos = 0, advance = 0; + FT_UInt xsize = 0, ysize = 0, format = 0; FT_Byte* p; @@ -630,18 +630,35 @@ &xpos, &ypos, &xsize, &ysize, &advance, &format ); + + /* + * XXX: on 16bit system, we return an error for huge bitmap + * which causes a size truncation, because truncated + * size properties makes bitmap glyph broken. + */ + if ( xpos > FT_INT_MAX || ( ypos + ysize ) > FT_INT_MAX ) + { + FT_TRACE1(( "pfr_slot_load_bitmap:" )); + FT_TRACE1(( "huge bitmap glyph %dx%d over FT_GlyphSlot\n", + xpos, ypos )); + error = PFR_Err_Invalid_Pixel_Size; + } + if ( !error ) { glyph->root.format = FT_GLYPH_FORMAT_BITMAP; /* Set up glyph bitmap and metrics */ + + /* XXX: needs casts to fit FT_Bitmap.{width|rows|pitch} */ glyph->root.bitmap.width = (FT_Int)xsize; glyph->root.bitmap.rows = (FT_Int)ysize; - glyph->root.bitmap.pitch = (FT_Long)( xsize + 7 ) >> 3; + glyph->root.bitmap.pitch = (FT_Int)( xsize + 7 ) >> 3; glyph->root.bitmap.pixel_mode = FT_PIXEL_MODE_MONO; - glyph->root.metrics.width = (FT_Long)xsize << 6; - glyph->root.metrics.height = (FT_Long)ysize << 6; + /* XXX: needs casts to fit FT_Glyph_Metrics.{width|height} */ + glyph->root.metrics.width = (FT_Pos)xsize << 6; + glyph->root.metrics.height = (FT_Pos)ysize << 6; glyph->root.metrics.horiBearingX = xpos << 6; glyph->root.metrics.horiBearingY = ypos << 6; glyph->root.metrics.horiAdvance = FT_PIX_ROUND( ( advance >> 2 ) ); @@ -649,8 +666,9 @@ glyph->root.metrics.vertBearingY = 0; glyph->root.metrics.vertAdvance = size->root.metrics.height; - glyph->root.bitmap_left = xpos; - glyph->root.bitmap_top = ypos + ysize; + /* XXX: needs casts fit FT_GlyphSlotRec.bitmap_{left|top} */ + glyph->root.bitmap_left = (FT_Int)xpos; + glyph->root.bitmap_top = (FT_Int)(ypos + ysize); /* Allocate and read bitmap data */ { |