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Fix handling of EBDT formats 8 and 9. 

The main cycle in `blit_sbit' makes too many iterations: it actually
needs the count of lines in the source bitmap rather than in the
target image.

* src/sfnt/ttsbit.c (blit_sbit) [FT_CONFIG_OPTION_OLD_INTERNALS]:
Add parameter `source_height' and use it for main loop.
(Load_SBit_Single) [FT_CONFIG_OPTION_OLD_INTERNALS]: Updated.
This commit is contained in:
Werner Lemberg 2009-03-02 09:09:12 +00:00
parent 14de111f72
commit e5a7cc239c
2 changed files with 18 additions and 5 deletions
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12
ChangeLog
View File

@ -1,3 +1,15 @@
2009-03-02 Alexey Kryukov <anagnost@yandex.ru>
Fix handling of EBDT formats 8 and 9.
The main cycle in `blit_sbit' makes too many iterations: it actually
needs the count of lines in the source bitmap rather than in the
target image.
* src/sfnt/ttsbit.c (blit_sbit) [FT_CONFIG_OPTION_OLD_INTERNALS]:
Add parameter `source_height' and use it for main loop.
(Load_SBit_Single) [FT_CONFIG_OPTION_OLD_INTERNALS]: Updated.
2009-02-23 Werner Lemberg <wl@gnu.org>
Fix Savannah bug #25669.

11
src/sfnt/ttsbit.c
View File

@ -4,7 +4,7 @@
/* */
/* TrueType and OpenType embedded bitmap support (body). */
/* */
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by */
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -83,7 +83,8 @@
FT_Int line_bits,
FT_Bool byte_padded,
FT_Int x_offset,
FT_Int y_offset )
FT_Int y_offset,
FT_Int source_height )
{
FT_Byte* line_buff;
FT_Int line_incr;
@ -116,7 +117,7 @@
acc = 0; /* clear accumulator */
loaded = 0; /* no bits were loaded */
for ( height = target->rows; height > 0; height-- )
for ( height = source_height; height > 0; height-- )
{
FT_Byte* cur = line_buff; /* current write cursor */
FT_Int count = line_bits; /* # of bits to extract per line */
@ -772,7 +773,7 @@
Found:
/* return successfully! */
*arange = range;
return 0;
return SFNT_Err_Ok;
}
}
@ -1230,7 +1231,7 @@
/* the sbit blitter doesn't make a difference between pixmap */
/* depths. */
blit_sbit( map, (FT_Byte*)stream->cursor, line_bits, pad_bytes,
x_offset * pix_bits, y_offset );
x_offset * pix_bits, y_offset, metrics->height );
FT_FRAME_EXIT();
}