pfr_log_font_load( PFR_LogFont log_font,
FT_Stream stream,
FT_UInt idx,
FT_UInt32 section_offset,
FT_Bool size_increment )
{
FT_UInt num_log_fonts;
FT_UInt flags;
FT_UInt32 offset;
FT_UInt32 size;
FT_Error error;
if ( FT_STREAM_SEEK( section_offset ) ||
FT_READ_USHORT( num_log_fonts ) )
goto Exit;
if ( idx >= num_log_fonts )
return FT_THROW( Invalid_Argument );
if ( FT_STREAM_SKIP( idx * 5 ) ||
FT_READ_USHORT( size ) ||
FT_READ_UOFF3 ( offset ) )
goto Exit;
/* save logical font size and offset */
log_font->size = size;
log_font->offset = offset;
/* now, check the rest of the table before loading it */
{
FT_Byte* p;
FT_Byte* limit;
FT_UInt local;
if ( FT_STREAM_SEEK( offset ) ||
FT_FRAME_ENTER( size ) )
goto Exit;
p = stream->cursor;
limit = p + size;
PFR_CHECK( 13 );
log_font->matrix[0] = PFR_NEXT_LONG( p );
log_font->matrix[1] = PFR_NEXT_LONG( p );
log_font->matrix[2] = PFR_NEXT_LONG( p );
log_font->matrix[3] = PFR_NEXT_LONG( p );
flags = PFR_NEXT_BYTE( p );
local = 0;
if ( flags & PFR_LOG_STROKE )
{
local++;
if ( flags & PFR_LOG_2BYTE_STROKE )
local++;
if ( ( flags & PFR_LINE_JOIN_MASK ) == PFR_LINE_JOIN_MITER )
local += 3;
}
if ( flags & PFR_LOG_BOLD )
{
local++;
if ( flags & PFR_LOG_2BYTE_BOLD )
local++;
}
PFR_CHECK( local );
if ( flags & PFR_LOG_STROKE )
{
log_font->stroke_thickness = ( flags & PFR_LOG_2BYTE_STROKE )
? PFR_NEXT_SHORT( p )
: PFR_NEXT_BYTE( p );
if ( ( flags & PFR_LINE_JOIN_MASK ) == PFR_LINE_JOIN_MITER )
log_font->miter_limit = PFR_NEXT_LONG( p );
}
if ( flags & PFR_LOG_BOLD )
{
log_font->bold_thickness = ( flags & PFR_LOG_2BYTE_BOLD )
? PFR_NEXT_SHORT( p )
: PFR_NEXT_BYTE( p );
}
if ( flags & PFR_LOG_EXTRA_ITEMS )
{
error = pfr_extra_items_skip( &p, limit );
if ( error )
goto Fail;
}
PFR_CHECK( 5 );
log_font->phys_size = PFR_NEXT_USHORT( p );
log_font->phys_offset = PFR_NEXT_ULONG( p );
if ( size_increment )
{
PFR_CHECK( 1 );
log_font->phys_size += (FT_UInt32)PFR_NEXT_BYTE( p ) << 16;
}
}
Fail:
FT_FRAME_EXIT();
Exit:
return error;
Too_Short:
FT_ERROR(( "pfr_log_font_load: invalid logical font table\n" ));
error = FT_THROW( Invalid_Table );
goto Fail;
}
pfr_extra_item_load_bitmap_info( FT_Byte* p,
FT_Byte* limit,
PFR_PhyFont phy_font )
{
FT_Memory memory = phy_font->memory;
PFR_Strike strike;
FT_UInt flags0;
FT_UInt n, count, size1;
FT_Error error = 0;
PFR_CHECK( 5 );
p += 3; /* skip bctSize */
flags0 = PFR_NEXT_BYTE( p );
count = PFR_NEXT_BYTE( p );
/* re-allocate when needed */
if ( phy_font->num_strikes + count > phy_font->max_strikes )
{
FT_UInt new_max = FT_PAD_CEIL( phy_font->num_strikes + count, 4 );
if ( FT_RENEW_ARRAY( phy_font->strikes,
phy_font->num_strikes,
new_max ) )
goto Exit;
phy_font->max_strikes = new_max;
}
size1 = 1 + 1 + 1 + 2 + 2 + 1;
if ( flags0 & PFR_STRIKE_2BYTE_XPPM )
size1++;
if ( flags0 & PFR_STRIKE_2BYTE_YPPM )
size1++;
if ( flags0 & PFR_STRIKE_3BYTE_SIZE )
size1++;
if ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
size1++;
if ( flags0 & PFR_STRIKE_2BYTE_COUNT )
size1++;
strike = phy_font->strikes + phy_font->num_strikes;
PFR_CHECK( count * size1 );
for ( n = 0; n < count; n++, strike++ )
{
strike->x_ppm = ( flags0 & PFR_STRIKE_2BYTE_XPPM )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
strike->y_ppm = ( flags0 & PFR_STRIKE_2BYTE_YPPM )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
strike->flags = PFR_NEXT_BYTE( p );
strike->bct_size = ( flags0 & PFR_STRIKE_3BYTE_SIZE )
? PFR_NEXT_ULONG( p )
: PFR_NEXT_USHORT( p );
strike->bct_offset = ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
? PFR_NEXT_ULONG( p )
: PFR_NEXT_USHORT( p );
strike->num_bitmaps = ( flags0 & PFR_STRIKE_2BYTE_COUNT )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
}
phy_font->num_strikes += count;
Exit:
return error;
Too_Short:
error = PFR_Err_Invalid_Table;
FT_ERROR(( "pfr_extra_item_load_bitmap_info: invalid bitmap info table\n" ));
goto Exit;
}
pfr_phy_font_load( PFR_PhyFont phy_font,
FT_Stream stream,
FT_UInt32 offset,
FT_UInt32 size )
{
FT_Error error;
FT_Memory memory = stream->memory;
FT_UInt flags, num_aux;
FT_Byte* p;
FT_Byte* limit;
phy_font->memory = memory;
phy_font->offset = offset;
phy_font->kern_items = NULL;
phy_font->kern_items_tail = &phy_font->kern_items;
if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
goto Exit;
phy_font->cursor = stream->cursor;
p = stream->cursor;
limit = p + size;
PFR_CHECK( 15 );
phy_font->font_ref_number = PFR_NEXT_USHORT( p );
phy_font->outline_resolution = PFR_NEXT_USHORT( p );
phy_font->metrics_resolution = PFR_NEXT_USHORT( p );
phy_font->bbox.xMin = PFR_NEXT_SHORT( p );
phy_font->bbox.yMin = PFR_NEXT_SHORT( p );
phy_font->bbox.xMax = PFR_NEXT_SHORT( p );
phy_font->bbox.yMax = PFR_NEXT_SHORT( p );
phy_font->flags = flags = PFR_NEXT_BYTE( p );
/* get the standard advance for non-proprotional fonts */
if ( !(flags & PFR_PHY_PROPORTIONAL) )
{
PFR_CHECK( 2 );
phy_font->standard_advance = PFR_NEXT_SHORT( p );
}
/* load the extra items when present */
if ( flags & PFR_PHY_EXTRA_ITEMS )
{
error = pfr_extra_items_parse( &p, limit,
pfr_phy_font_extra_items, phy_font );
if ( error )
goto Fail;
}
/* In certain fonts, the auxiliary bytes contain interesting */
/* information. These are not in the specification but can be */
/* guessed by looking at the content of a few PFR0 fonts. */
PFR_CHECK( 3 );
num_aux = PFR_NEXT_ULONG( p );
if ( num_aux > 0 )
{
FT_Byte* q = p;
FT_Byte* q2;
PFR_CHECK( num_aux );
p += num_aux;
while ( num_aux > 0 )
{
FT_UInt length, type;
if ( q + 4 > p )
break;
length = PFR_NEXT_USHORT( q );
if ( length < 4 || length > num_aux )
break;
q2 = q + length - 2;
type = PFR_NEXT_USHORT( q );
switch ( type )
{
case 1:
/* this seems to correspond to the font's family name,
* padded to 16-bits with one zero when necessary
*/
error = pfr_aux_name_load( q, length - 4U, memory,
&phy_font->family_name );
if ( error )
goto Exit;
break;
case 2:
if ( q + 32 > q2 )
break;
q += 10;
phy_font->ascent = PFR_NEXT_SHORT( q );
phy_font->descent = PFR_NEXT_SHORT( q );
phy_font->leading = PFR_NEXT_SHORT( q );
q += 16;
break;
case 3:
/* this seems to correspond to the font's style name,
* padded to 16-bits with one zero when necessary
*/
error = pfr_aux_name_load( q, length - 4U, memory,
&phy_font->style_name );
if ( error )
goto Exit;
break;
default:
;
}
q = q2;
num_aux -= length;
}
}
/* read the blue values */
{
FT_UInt n, count;
PFR_CHECK( 1 );
phy_font->num_blue_values = count = PFR_NEXT_BYTE( p );
PFR_CHECK( count * 2 );
if ( FT_NEW_ARRAY( phy_font->blue_values, count ) )
goto Fail;
for ( n = 0; n < count; n++ )
phy_font->blue_values[n] = PFR_NEXT_SHORT( p );
}
PFR_CHECK( 8 );
phy_font->blue_fuzz = PFR_NEXT_BYTE( p );
phy_font->blue_scale = PFR_NEXT_BYTE( p );
phy_font->vertical.standard = PFR_NEXT_USHORT( p );
phy_font->horizontal.standard = PFR_NEXT_USHORT( p );
/* read the character descriptors */
{
FT_UInt n, count, Size;
phy_font->num_chars = count = PFR_NEXT_USHORT( p );
phy_font->chars_offset = offset + ( p - stream->cursor );
if ( FT_NEW_ARRAY( phy_font->chars, count ) )
goto Fail;
Size = 1 + 1 + 2;
if ( flags & PFR_PHY_2BYTE_CHARCODE )
Size += 1;
if ( flags & PFR_PHY_PROPORTIONAL )
Size += 2;
if ( flags & PFR_PHY_ASCII_CODE )
Size += 1;
if ( flags & PFR_PHY_2BYTE_GPS_SIZE )
Size += 1;
if ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
Size += 1;
PFR_CHECK( count * Size );
for ( n = 0; n < count; n++ )
{
PFR_Char cur = &phy_font->chars[n];
cur->char_code = ( flags & PFR_PHY_2BYTE_CHARCODE )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
cur->advance = ( flags & PFR_PHY_PROPORTIONAL )
? PFR_NEXT_SHORT( p )
: (FT_Int) phy_font->standard_advance;
#if 0
cur->ascii = ( flags & PFR_PHY_ASCII_CODE )
? PFR_NEXT_BYTE( p )
: 0;
#else
if ( flags & PFR_PHY_ASCII_CODE )
p += 1;
#endif
cur->gps_size = ( flags & PFR_PHY_2BYTE_GPS_SIZE )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
cur->gps_offset = ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
? PFR_NEXT_ULONG( p )
: PFR_NEXT_USHORT( p );
}
}
/* that's it! */
Fail:
FT_FRAME_EXIT();
/* save position of bitmap info */
phy_font->bct_offset = FT_STREAM_POS();
phy_font->cursor = NULL;
/* now sort kerning pairs */
error = pfr_sort_kerning_pairs( stream, phy_font );
Exit:
return error;
Too_Short:
error = PFR_Err_Invalid_Table;
FT_ERROR(( "pfr_phy_font_load: invalid physical font table\n" ));
goto Fail;
}
pfr_phy_font_load( PFR_PhyFont phy_font,
FT_Stream stream,
FT_UInt32 offset,
FT_UInt32 size )
{
FT_Error error;
FT_Memory memory = stream->memory;
FT_UInt flags, num_aux;
FT_Byte* p;
FT_Byte* limit;
phy_font->memory = memory;
phy_font->offset = offset;
if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
goto Exit;
p = stream->cursor;
limit = p + size;
PFR_CHECK( 15 );
phy_font->font_ref_number = PFR_NEXT_USHORT( p );
phy_font->outline_resolution = PFR_NEXT_USHORT( p );
phy_font->metrics_resolution = PFR_NEXT_USHORT( p );
phy_font->bbox.xMin = PFR_NEXT_SHORT( p );
phy_font->bbox.yMin = PFR_NEXT_SHORT( p );
phy_font->bbox.xMax = PFR_NEXT_SHORT( p );
phy_font->bbox.yMax = PFR_NEXT_SHORT( p );
phy_font->flags = flags = PFR_NEXT_BYTE( p );
/* get the standard advance for non-proprotional fonts */
if ( !(flags & PFR_PHY_PROPORTIONAL) )
{
PFR_CHECK( 2 );
phy_font->standard_advance = PFR_NEXT_SHORT( p );
}
/* load the extra items when present */
if ( flags & PFR_PHY_EXTRA_ITEMS )
{
error = pfr_extra_items_parse( &p, limit,
pfr_phy_font_extra_items, phy_font );
if ( error )
goto Fail;
}
/* skip the aux bytes */
PFR_CHECK( 3 );
num_aux = PFR_NEXT_ULONG( p );
PFR_CHECK( num_aux );
p += num_aux;
/* read the blue values */
{
FT_UInt n, count;
PFR_CHECK( 1 );
phy_font->num_blue_values = count = PFR_NEXT_BYTE( p );
PFR_CHECK( count * 2 );
if ( FT_NEW_ARRAY( phy_font->blue_values, count ) )
goto Fail;
for ( n = 0; n < count; n++ )
phy_font->blue_values[n] = PFR_NEXT_SHORT( p );
}
PFR_CHECK( 8 );
phy_font->blue_fuzz = PFR_NEXT_BYTE( p );
phy_font->blue_scale = PFR_NEXT_BYTE( p );
phy_font->vertical.standard = PFR_NEXT_USHORT( p );
phy_font->horizontal.standard = PFR_NEXT_USHORT( p );
/* read the character descriptors */
{
FT_UInt n, count, Size;
phy_font->num_chars = count = PFR_NEXT_USHORT( p );
phy_font->chars_offset = offset + ( p - stream->cursor );
if ( FT_NEW_ARRAY( phy_font->chars, count ) )
goto Fail;
Size = 1 + 1 + 2;
if ( flags & PFR_PHY_2BYTE_CHARCODE )
Size += 1;
if ( flags & PFR_PHY_PROPORTIONAL )
Size += 2;
if ( flags & PFR_PHY_ASCII_CODE )
Size += 1;
if ( flags & PFR_PHY_2BYTE_GPS_SIZE )
Size += 1;
if ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
Size += 1;
PFR_CHECK( count * Size );
for ( n = 0; n < count; n++ )
{
PFR_Char cur = &phy_font->chars[n];
cur->char_code = ( flags & PFR_PHY_2BYTE_CHARCODE )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
cur->advance = ( flags & PFR_PHY_PROPORTIONAL )
? PFR_NEXT_SHORT( p )
: phy_font->standard_advance;
#if 0
cur->ascii = ( flags & PFR_PHY_ASCII_CODE )
? PFR_NEXT_BYTE( p )
: 0;
#else
if ( flags & PFR_PHY_ASCII_CODE )
p += 1;
#endif
cur->gps_size = ( flags & PFR_PHY_2BYTE_GPS_SIZE )
? PFR_NEXT_USHORT( p )
: PFR_NEXT_BYTE( p );
cur->gps_offset = ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
? PFR_NEXT_ULONG( p )
: PFR_NEXT_USHORT( p );
}
}
/* that's it !! */
Fail:
FT_FRAME_EXIT();
Exit:
return error;
Too_Short:
error = PFR_Err_Invalid_Table;
FT_ERROR(( "pfr_phy_font_load: invalid physical font table\n" ));
goto Fail;
}
