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-rw-r--r--src/base/ftobjs.c180
1 files changed, 123 insertions, 57 deletions
diff --git a/src/base/ftobjs.c b/src/base/ftobjs.c
index 9c3332c..96572bd 100644
--- a/src/base/ftobjs.c
+++ b/src/base/ftobjs.c
@@ -55,7 +55,18 @@
#pragma warning( disable : 4244 )
#endif /* _MSC_VER */
- /* it's easiest to include `md5.c' directly */
+ /* It's easiest to include `md5.c' directly. However, since OpenSSL */
+ /* also provides the same functions, there might be conflicts if */
+ /* both FreeType and OpenSSL are built as static libraries. For */
+ /* this reason, we put the MD5 stuff into the `FT_' namespace. */
+#define MD5_u32plus FT_MD5_u32plus
+#define MD5_CTX FT_MD5_CTX
+#define MD5_Init FT_MD5_Init
+#define MD5_Update FT_MD5_Update
+#define MD5_Final FT_MD5_Final
+
+#undef HAVE_OPENSSL
+
#include "md5.c"
#if defined( _MSC_VER )
@@ -675,7 +686,8 @@
/* check the size of the `fpgm' and `prep' tables, too -- */
/* the assumption is that there don't exist real TTFs where */
/* both `fpgm' and `prep' tables are missing */
- if ( mode == FT_RENDER_MODE_LIGHT ||
+ if ( ( mode == FT_RENDER_MODE_LIGHT &&
+ !FT_DRIVER_HINTS_LIGHTLY( driver ) ) ||
face->internal->ignore_unpatented_hinter ||
( FT_IS_SFNT( face ) &&
ttface->num_locations &&
@@ -1375,13 +1387,13 @@
}
#ifdef FT_MACINTOSH
- /* At this point, face_index has served its purpose; */
+ /* At this point, the face index has served its purpose; */
/* whoever calls this function has already used it to */
/* locate the correct font data. We should not propagate */
/* this index to FT_Open_Face() (unless it is negative). */
if ( face_index > 0 )
- face_index = 0;
+ face_index &= 0x7FFF0000L; /* retain GX data */
#endif
error = FT_Open_Face( library, &args, face_index, aface );
@@ -1495,6 +1507,10 @@
FT_UNUSED( params );
+ /* ignore GX stuff */
+ if ( face_index > 0 )
+ face_index &= 0xFFFFL;
+
pos = FT_STREAM_POS();
error = ft_lookup_PS_in_sfnt_stream( stream,
@@ -1505,15 +1521,18 @@
if ( error )
goto Exit;
- if ( FT_Stream_Seek( stream, pos + offset ) )
+ error = FT_Stream_Seek( stream, pos + offset );
+ if ( error )
goto Exit;
if ( FT_ALLOC( sfnt_ps, (FT_Long)length ) )
goto Exit;
error = FT_Stream_Read( stream, (FT_Byte *)sfnt_ps, length );
- if ( error )
+ if ( error ) {
+ FT_FREE( sfnt_ps );
goto Exit;
+ }
error = open_face_from_buffer( library,
sfnt_ps,
@@ -1582,12 +1601,14 @@
/* FT2 allocator takes signed long buffer length,
* too large value causing overflow should be checked
*/
- FT_TRACE4(( " POST fragment #%d: length=0x%08x\n",
- i, temp));
- if ( 0x7FFFFFFFUL < temp || pfb_len + temp + 6 < pfb_len )
+ FT_TRACE4(( " POST fragment #%d: length=0x%08x"
+ " total pfb_len=0x%08x\n",
+ i, temp, pfb_len + temp + 6));
+ if ( FT_MAC_RFORK_MAX_LEN < temp ||
+ FT_MAC_RFORK_MAX_LEN - temp < pfb_len + 6 )
{
- FT_TRACE2(( " too long fragment length makes"
- " pfb_len confused: temp=0x%08x\n", temp ));
+ FT_TRACE2(( " MacOS resource length cannot exceed"
+ " 0x%08x\n", FT_MAC_RFORK_MAX_LEN ));
error = FT_THROW( Invalid_Offset );
goto Exit;
}
@@ -1660,7 +1681,7 @@
else
{
FT_TRACE3(( " Write POST fragment #%d header (4-byte) to buffer"
- " 0x%p + 0x%08x\n", i, pfb_data, pfb_lenpos ));
+ " %p + 0x%08x\n", i, pfb_data, pfb_lenpos ));
if ( pfb_lenpos + 3 > pfb_len + 2 )
goto Exit2;
pfb_data[pfb_lenpos ] = (FT_Byte)( len );
@@ -1672,7 +1693,7 @@
break;
FT_TRACE3(( " Write POST fragment #%d header (6-byte) to buffer"
- " 0x%p + 0x%08x\n", i, pfb_data, pfb_pos ));
+ " %p + 0x%08x\n", i, pfb_data, pfb_pos ));
if ( pfb_pos + 6 > pfb_len + 2 )
goto Exit2;
pfb_data[pfb_pos++] = 0x80;
@@ -1692,7 +1713,7 @@
goto Exit2;
FT_TRACE3(( " Load POST fragment #%d (%d byte) to buffer"
- " 0x%p + 0x%08x\n", i, rlen, pfb_data, pfb_pos ));
+ " %p + 0x%08x\n", i, rlen, pfb_data, pfb_pos ));
error = FT_Stream_Read( stream, (FT_Byte *)pfb_data + pfb_pos, rlen );
if ( error )
goto Exit2;
@@ -1737,7 +1758,7 @@
/* The resource header says we've got resource_cnt `sfnt' */
/* (TrueType/OpenType) resources in this file. Look through */
/* them for the one indicated by face_index, load it into mem, */
- /* pass it on the the truetype driver and return it. */
+ /* pass it on to the truetype driver, and return it. */
/* */
static FT_Error
Mac_Read_sfnt_Resource( FT_Library library,
@@ -1770,6 +1791,8 @@
goto Exit;
if ( rlen == -1 )
return FT_THROW( Cannot_Open_Resource );
+ if ( (FT_ULong)rlen > FT_MAC_RFORK_MAX_LEN )
+ return FT_THROW( Invalid_Offset );
error = open_face_PS_from_sfnt_stream( library,
stream,
@@ -1780,14 +1803,17 @@
goto Exit;
/* rewind sfnt stream before open_face_PS_from_sfnt_stream() */
- if ( FT_Stream_Seek( stream, flag_offset + 4 ) )
+ error = FT_Stream_Seek( stream, flag_offset + 4 );
+ if ( error )
goto Exit;
if ( FT_ALLOC( sfnt_data, rlen ) )
return error;
error = FT_Stream_Read( stream, (FT_Byte *)sfnt_data, (FT_ULong)rlen );
- if ( error )
+ if ( error ) {
+ FT_FREE( sfnt_data );
goto Exit;
+ }
is_cff = rlen > 4 && !ft_memcmp( sfnt_data, "OTTO", 4 );
error = open_face_from_buffer( library,
@@ -1889,13 +1915,14 @@
if ( error )
goto Exit;
- if ( header[ 0] != 0 ||
- header[74] != 0 ||
- header[82] != 0 ||
- header[ 1] == 0 ||
- header[ 1] > 33 ||
- header[63] != 0 ||
- header[2 + header[1]] != 0 )
+ if ( header[ 0] != 0 ||
+ header[74] != 0 ||
+ header[82] != 0 ||
+ header[ 1] == 0 ||
+ header[ 1] > 33 ||
+ header[63] != 0 ||
+ header[2 + header[1]] != 0 ||
+ header[0x53] > 0x7F )
return FT_THROW( Unknown_File_Format );
dlen = ( header[0x53] << 24 ) |
@@ -2032,7 +2059,11 @@
#undef FT_COMPONENT
#define FT_COMPONENT trace_raccess
- FT_TRACE3(( "Try as dfont: %s ...", args->pathname ));
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE3(( "Try as dfont: " ));
+ if ( !( args->flags & FT_OPEN_MEMORY ) )
+ FT_TRACE3(( "%s ...", args->pathname ));
+#endif
error = IsMacResource( library, stream, 0, face_index, aface );
@@ -2154,7 +2185,8 @@
FT_ERR_EQ( error, Table_Missing ) )
{
/* TrueType but essential tables are missing */
- if ( FT_Stream_Seek( stream, 0 ) )
+ error = FT_Stream_Seek( stream, 0 );
+ if ( error )
break;
error = open_face_PS_from_sfnt_stream( library,
@@ -3068,18 +3100,37 @@
if ( kern_mode != FT_KERNING_UNFITTED )
{
+ FT_Pos orig_x = akerning->x;
+ FT_Pos orig_y = akerning->y;
+
+
/* we scale down kerning values for small ppem values */
/* to avoid that rounding makes them too big. */
/* `25' has been determined heuristically. */
if ( face->size->metrics.x_ppem < 25 )
- akerning->x = FT_MulDiv( akerning->x,
+ akerning->x = FT_MulDiv( orig_x,
face->size->metrics.x_ppem, 25 );
if ( face->size->metrics.y_ppem < 25 )
- akerning->y = FT_MulDiv( akerning->y,
+ akerning->y = FT_MulDiv( orig_y,
face->size->metrics.y_ppem, 25 );
akerning->x = FT_PIX_ROUND( akerning->x );
akerning->y = FT_PIX_ROUND( akerning->y );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ {
+ FT_Pos orig_x_rounded = FT_PIX_ROUND( orig_x );
+ FT_Pos orig_y_rounded = FT_PIX_ROUND( orig_y );
+
+
+ if ( akerning->x != orig_x_rounded ||
+ akerning->y != orig_y_rounded )
+ FT_TRACE5(( "FT_Get_Kerning: horizontal kerning"
+ " (%d, %d) scaled down to (%d, %d) pixels\n",
+ orig_x_rounded / 64, orig_y_rounded / 64,
+ akerning->x / 64, akerning->y / 64 ));
+ }
+#endif
}
}
}
@@ -3350,8 +3401,12 @@
FT_TRACE1(( "FT_Get_Char_Index: too large charcode" ));
FT_TRACE1(( " 0x%x is truncated\n", charcode ));
}
+
result = cmap->clazz->char_index( cmap, (FT_UInt32)charcode );
+ if ( result >= (FT_UInt)face->num_glyphs )
+ result = 0;
}
+
return result;
}
@@ -3370,7 +3425,7 @@
if ( face && face->charmap && face->num_glyphs )
{
gindex = FT_Get_Char_Index( face, 0 );
- if ( gindex == 0 || gindex >= (FT_UInt)face->num_glyphs )
+ if ( gindex == 0 )
result = FT_Get_Next_Char( face, 0, &gindex );
}
@@ -4116,39 +4171,50 @@
#undef FT_COMPONENT
#define FT_COMPONENT trace_bitmap
- /* we convert to a single bitmap format for computing the checksum */
- if ( !error )
+ /*
+ * Computing the MD5 checksum is expensive, unnecessarily distorting a
+ * possible profiling of FreeType if compiled with tracing support. For
+ * this reason, we execute the following code only if explicitly
+ * requested.
+ */
+
+ /* we use FT_TRACE3 in this block */
+ if ( ft_trace_levels[trace_bitmap] >= 3 )
{
- FT_Bitmap bitmap;
- FT_Error err;
+ /* we convert to a single bitmap format for computing the checksum */
+ if ( !error )
+ {
+ FT_Bitmap bitmap;
+ FT_Error err;
- FT_Bitmap_Init( &bitmap );
+ FT_Bitmap_Init( &bitmap );
- /* this also converts the bitmap flow to `down' (i.e., pitch > 0) */
- err = FT_Bitmap_Convert( library, &slot->bitmap, &bitmap, 1 );
- if ( !err )
- {
- MD5_CTX ctx;
- unsigned char md5[16];
- int i;
- unsigned int rows = bitmap.rows;
- unsigned int pitch = (unsigned int)bitmap.pitch;
-
-
- MD5_Init( &ctx );
- MD5_Update( &ctx, bitmap.buffer, rows * pitch );
- MD5_Final( md5, &ctx );
-
- FT_TRACE3(( "MD5 checksum for %dx%d bitmap:\n"
- " ",
- rows, pitch ));
- for ( i = 0; i < 16; i++ )
- FT_TRACE3(( "%02X", md5[i] ));
- FT_TRACE3(( "\n" ));
- }
+ /* this also converts the bitmap flow to `down' (i.e., pitch > 0) */
+ err = FT_Bitmap_Convert( library, &slot->bitmap, &bitmap, 1 );
+ if ( !err )
+ {
+ MD5_CTX ctx;
+ unsigned char md5[16];
+ int i;
+ unsigned int rows = bitmap.rows;
+ unsigned int pitch = (unsigned int)bitmap.pitch;
+
+
+ MD5_Init( &ctx );
+ MD5_Update( &ctx, bitmap.buffer, rows * pitch );
+ MD5_Final( md5, &ctx );
+
+ FT_TRACE3(( "MD5 checksum for %dx%d bitmap:\n"
+ " ",
+ rows, pitch ));
+ for ( i = 0; i < 16; i++ )
+ FT_TRACE3(( "%02X", md5[i] ));
+ FT_TRACE3(( "\n" ));
+ }
- FT_Bitmap_Done( library, &bitmap );
+ FT_Bitmap_Done( library, &bitmap );
+ }
}
#undef FT_COMPONENT
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 23:00:34 +0000