--- a/misc/libfreetype/src/pshinter/pshrec.c Thu Jul 25 23:16:06 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1224 +0,0 @@
-/***************************************************************************/
-/* */
-/* pshrec.c */
-/* */
-/* FreeType PostScript hints recorder (body). */
-/* */
-/* Copyright 2001, 2002, 2003, 2004, 2007, 2009 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
-#include <ft2build.h>
-#include FT_FREETYPE_H
-#include FT_INTERNAL_OBJECTS_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_CALC_H
-
-#include "pshrec.h"
-#include "pshalgo.h"
-
-#include "pshnterr.h"
-
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_pshrec
-
-#ifdef DEBUG_HINTER
- PS_Hints ps_debug_hints = 0;
- int ps_debug_no_horz_hints = 0;
- int ps_debug_no_vert_hints = 0;
-#endif
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PS_HINT MANAGEMENT *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- /* destroy hints table */
- static void
- ps_hint_table_done( PS_Hint_Table table,
- FT_Memory memory )
- {
- FT_FREE( table->hints );
- table->num_hints = 0;
- table->max_hints = 0;
- }
-
-
- /* ensure that a table can contain "count" elements */
- static FT_Error
- ps_hint_table_ensure( PS_Hint_Table table,
- FT_UInt count,
- FT_Memory memory )
- {
- FT_UInt old_max = table->max_hints;
- FT_UInt new_max = count;
- FT_Error error = PSH_Err_Ok;
-
-
- if ( new_max > old_max )
- {
- /* try to grow the table */
- new_max = FT_PAD_CEIL( new_max, 8 );
- if ( !FT_RENEW_ARRAY( table->hints, old_max, new_max ) )
- table->max_hints = new_max;
- }
- return error;
- }
-
-
- static FT_Error
- ps_hint_table_alloc( PS_Hint_Table table,
- FT_Memory memory,
- PS_Hint *ahint )
- {
- FT_Error error = PSH_Err_Ok;
- FT_UInt count;
- PS_Hint hint = 0;
-
-
- count = table->num_hints;
- count++;
-
- if ( count >= table->max_hints )
- {
- error = ps_hint_table_ensure( table, count, memory );
- if ( error )
- goto Exit;
- }
-
- hint = table->hints + count - 1;
- hint->pos = 0;
- hint->len = 0;
- hint->flags = 0;
-
- table->num_hints = count;
-
- Exit:
- *ahint = hint;
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PS_MASK MANAGEMENT *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- /* destroy mask */
- static void
- ps_mask_done( PS_Mask mask,
- FT_Memory memory )
- {
- FT_FREE( mask->bytes );
- mask->num_bits = 0;
- mask->max_bits = 0;
- mask->end_point = 0;
- }
-
-
- /* ensure that a mask can contain "count" bits */
- static FT_Error
- ps_mask_ensure( PS_Mask mask,
- FT_UInt count,
- FT_Memory memory )
- {
- FT_UInt old_max = ( mask->max_bits + 7 ) >> 3;
- FT_UInt new_max = ( count + 7 ) >> 3;
- FT_Error error = PSH_Err_Ok;
-
-
- if ( new_max > old_max )
- {
- new_max = FT_PAD_CEIL( new_max, 8 );
- if ( !FT_RENEW_ARRAY( mask->bytes, old_max, new_max ) )
- mask->max_bits = new_max * 8;
- }
- return error;
- }
-
-
- /* test a bit value in a given mask */
- static FT_Int
- ps_mask_test_bit( PS_Mask mask,
- FT_Int idx )
- {
- if ( (FT_UInt)idx >= mask->num_bits )
- return 0;
-
- return mask->bytes[idx >> 3] & ( 0x80 >> ( idx & 7 ) );
- }
-
-
- /* clear a given bit */
- static void
- ps_mask_clear_bit( PS_Mask mask,
- FT_Int idx )
- {
- FT_Byte* p;
-
-
- if ( (FT_UInt)idx >= mask->num_bits )
- return;
-
- p = mask->bytes + ( idx >> 3 );
- p[0] = (FT_Byte)( p[0] & ~( 0x80 >> ( idx & 7 ) ) );
- }
-
-
- /* set a given bit, possibly grow the mask */
- static FT_Error
- ps_mask_set_bit( PS_Mask mask,
- FT_Int idx,
- FT_Memory memory )
- {
- FT_Error error = PSH_Err_Ok;
- FT_Byte* p;
-
-
- if ( idx < 0 )
- goto Exit;
-
- if ( (FT_UInt)idx >= mask->num_bits )
- {
- error = ps_mask_ensure( mask, idx + 1, memory );
- if ( error )
- goto Exit;
-
- mask->num_bits = idx + 1;
- }
-
- p = mask->bytes + ( idx >> 3 );
- p[0] = (FT_Byte)( p[0] | ( 0x80 >> ( idx & 7 ) ) );
-
- Exit:
- return error;
- }
-
-
- /* destroy mask table */
- static void
- ps_mask_table_done( PS_Mask_Table table,
- FT_Memory memory )
- {
- FT_UInt count = table->max_masks;
- PS_Mask mask = table->masks;
-
-
- for ( ; count > 0; count--, mask++ )
- ps_mask_done( mask, memory );
-
- FT_FREE( table->masks );
- table->num_masks = 0;
- table->max_masks = 0;
- }
-
-
- /* ensure that a mask table can contain "count" masks */
- static FT_Error
- ps_mask_table_ensure( PS_Mask_Table table,
- FT_UInt count,
- FT_Memory memory )
- {
- FT_UInt old_max = table->max_masks;
- FT_UInt new_max = count;
- FT_Error error = PSH_Err_Ok;
-
-
- if ( new_max > old_max )
- {
- new_max = FT_PAD_CEIL( new_max, 8 );
- if ( !FT_RENEW_ARRAY( table->masks, old_max, new_max ) )
- table->max_masks = new_max;
- }
- return error;
- }
-
-
- /* allocate a new mask in a table */
- static FT_Error
- ps_mask_table_alloc( PS_Mask_Table table,
- FT_Memory memory,
- PS_Mask *amask )
- {
- FT_UInt count;
- FT_Error error = PSH_Err_Ok;
- PS_Mask mask = 0;
-
-
- count = table->num_masks;
- count++;
-
- if ( count > table->max_masks )
- {
- error = ps_mask_table_ensure( table, count, memory );
- if ( error )
- goto Exit;
- }
-
- mask = table->masks + count - 1;
- mask->num_bits = 0;
- mask->end_point = 0;
- table->num_masks = count;
-
- Exit:
- *amask = mask;
- return error;
- }
-
-
- /* return last hint mask in a table, create one if the table is empty */
- static FT_Error
- ps_mask_table_last( PS_Mask_Table table,
- FT_Memory memory,
- PS_Mask *amask )
- {
- FT_Error error = PSH_Err_Ok;
- FT_UInt count;
- PS_Mask mask;
-
-
- count = table->num_masks;
- if ( count == 0 )
- {
- error = ps_mask_table_alloc( table, memory, &mask );
- if ( error )
- goto Exit;
- }
- else
- mask = table->masks + count - 1;
-
- Exit:
- *amask = mask;
- return error;
- }
-
-
- /* set a new mask to a given bit range */
- static FT_Error
- ps_mask_table_set_bits( PS_Mask_Table table,
- const FT_Byte* source,
- FT_UInt bit_pos,
- FT_UInt bit_count,
- FT_Memory memory )
- {
- FT_Error error = PSH_Err_Ok;
- PS_Mask mask;
-
-
- error = ps_mask_table_last( table, memory, &mask );
- if ( error )
- goto Exit;
-
- error = ps_mask_ensure( mask, bit_count, memory );
- if ( error )
- goto Exit;
-
- mask->num_bits = bit_count;
-
- /* now, copy bits */
- {
- FT_Byte* read = (FT_Byte*)source + ( bit_pos >> 3 );
- FT_Int rmask = 0x80 >> ( bit_pos & 7 );
- FT_Byte* write = mask->bytes;
- FT_Int wmask = 0x80;
- FT_Int val;
-
-
- for ( ; bit_count > 0; bit_count-- )
- {
- val = write[0] & ~wmask;
-
- if ( read[0] & rmask )
- val |= wmask;
-
- write[0] = (FT_Byte)val;
-
- rmask >>= 1;
- if ( rmask == 0 )
- {
- read++;
- rmask = 0x80;
- }
-
- wmask >>= 1;
- if ( wmask == 0 )
- {
- write++;
- wmask = 0x80;
- }
- }
- }
-
- Exit:
- return error;
- }
-
-
- /* test whether two masks in a table intersect */
- static FT_Int
- ps_mask_table_test_intersect( PS_Mask_Table table,
- FT_Int index1,
- FT_Int index2 )
- {
- PS_Mask mask1 = table->masks + index1;
- PS_Mask mask2 = table->masks + index2;
- FT_Byte* p1 = mask1->bytes;
- FT_Byte* p2 = mask2->bytes;
- FT_UInt count1 = mask1->num_bits;
- FT_UInt count2 = mask2->num_bits;
- FT_UInt count;
-
-
- count = ( count1 <= count2 ) ? count1 : count2;
- for ( ; count >= 8; count -= 8 )
- {
- if ( p1[0] & p2[0] )
- return 1;
-
- p1++;
- p2++;
- }
-
- if ( count == 0 )
- return 0;
-
- return ( p1[0] & p2[0] ) & ~( 0xFF >> count );
- }
-
-
- /* merge two masks, used by ps_mask_table_merge_all */
- static FT_Error
- ps_mask_table_merge( PS_Mask_Table table,
- FT_Int index1,
- FT_Int index2,
- FT_Memory memory )
- {
- FT_UInt temp;
- FT_Error error = PSH_Err_Ok;
-
-
- /* swap index1 and index2 so that index1 < index2 */
- if ( index1 > index2 )
- {
- temp = index1;
- index1 = index2;
- index2 = temp;
- }
-
- if ( index1 < index2 && index1 >= 0 && index2 < (FT_Int)table->num_masks )
- {
- /* we need to merge the bitsets of index1 and index2 with a */
- /* simple union */
- PS_Mask mask1 = table->masks + index1;
- PS_Mask mask2 = table->masks + index2;
- FT_UInt count1 = mask1->num_bits;
- FT_UInt count2 = mask2->num_bits;
- FT_Int delta;
-
-
- if ( count2 > 0 )
- {
- FT_UInt pos;
- FT_Byte* read;
- FT_Byte* write;
-
-
- /* if "count2" is greater than "count1", we need to grow the */
- /* first bitset, and clear the highest bits */
- if ( count2 > count1 )
- {
- error = ps_mask_ensure( mask1, count2, memory );
- if ( error )
- goto Exit;
-
- for ( pos = count1; pos < count2; pos++ )
- ps_mask_clear_bit( mask1, pos );
- }
-
- /* merge (unite) the bitsets */
- read = mask2->bytes;
- write = mask1->bytes;
- pos = (FT_UInt)( ( count2 + 7 ) >> 3 );
-
- for ( ; pos > 0; pos-- )
- {
- write[0] = (FT_Byte)( write[0] | read[0] );
- write++;
- read++;
- }
- }
-
- /* Now, remove "mask2" from the list. We need to keep the masks */
- /* sorted in order of importance, so move table elements. */
- mask2->num_bits = 0;
- mask2->end_point = 0;
-
- delta = table->num_masks - 1 - index2; /* number of masks to move */
- if ( delta > 0 )
- {
- /* move to end of table for reuse */
- PS_MaskRec dummy = *mask2;
-
-
- ft_memmove( mask2, mask2 + 1, delta * sizeof ( PS_MaskRec ) );
-
- mask2[delta] = dummy;
- }
-
- table->num_masks--;
- }
- else
- FT_TRACE0(( "ps_mask_table_merge: ignoring invalid indices (%d,%d)\n",
- index1, index2 ));
-
- Exit:
- return error;
- }
-
-
- /* Try to merge all masks in a given table. This is used to merge */
- /* all counter masks into independent counter "paths". */
- /* */
- static FT_Error
- ps_mask_table_merge_all( PS_Mask_Table table,
- FT_Memory memory )
- {
- FT_Int index1, index2;
- FT_Error error = PSH_Err_Ok;
-
-
- for ( index1 = table->num_masks - 1; index1 > 0; index1-- )
- {
- for ( index2 = index1 - 1; index2 >= 0; index2-- )
- {
- if ( ps_mask_table_test_intersect( table, index1, index2 ) )
- {
- error = ps_mask_table_merge( table, index2, index1, memory );
- if ( error )
- goto Exit;
-
- break;
- }
- }
- }
-
- Exit:
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PS_DIMENSION MANAGEMENT *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /* finalize a given dimension */
- static void
- ps_dimension_done( PS_Dimension dimension,
- FT_Memory memory )
- {
- ps_mask_table_done( &dimension->counters, memory );
- ps_mask_table_done( &dimension->masks, memory );
- ps_hint_table_done( &dimension->hints, memory );
- }
-
-
- /* initialize a given dimension */
- static void
- ps_dimension_init( PS_Dimension dimension )
- {
- dimension->hints.num_hints = 0;
- dimension->masks.num_masks = 0;
- dimension->counters.num_masks = 0;
- }
-
-
-#if 0
-
- /* set a bit at a given index in the current hint mask */
- static FT_Error
- ps_dimension_set_mask_bit( PS_Dimension dim,
- FT_UInt idx,
- FT_Memory memory )
- {
- PS_Mask mask;
- FT_Error error = PSH_Err_Ok;
-
-
- /* get last hint mask */
- error = ps_mask_table_last( &dim->masks, memory, &mask );
- if ( error )
- goto Exit;
-
- error = ps_mask_set_bit( mask, idx, memory );
-
- Exit:
- return error;
- }
-
-#endif
-
- /* set the end point in a mask, called from "End" & "Reset" methods */
- static void
- ps_dimension_end_mask( PS_Dimension dim,
- FT_UInt end_point )
- {
- FT_UInt count = dim->masks.num_masks;
- PS_Mask mask;
-
-
- if ( count > 0 )
- {
- mask = dim->masks.masks + count - 1;
- mask->end_point = end_point;
- }
- }
-
-
- /* set the end point in the current mask, then create a new empty one */
- /* (called by "Reset" method) */
- static FT_Error
- ps_dimension_reset_mask( PS_Dimension dim,
- FT_UInt end_point,
- FT_Memory memory )
- {
- PS_Mask mask;
-
-
- /* end current mask */
- ps_dimension_end_mask( dim, end_point );
-
- /* allocate new one */
- return ps_mask_table_alloc( &dim->masks, memory, &mask );
- }
-
-
- /* set a new mask, called from the "T2Stem" method */
- static FT_Error
- ps_dimension_set_mask_bits( PS_Dimension dim,
- const FT_Byte* source,
- FT_UInt source_pos,
- FT_UInt source_bits,
- FT_UInt end_point,
- FT_Memory memory )
- {
- FT_Error error = PSH_Err_Ok;
-
-
- /* reset current mask, if any */
- error = ps_dimension_reset_mask( dim, end_point, memory );
- if ( error )
- goto Exit;
-
- /* set bits in new mask */
- error = ps_mask_table_set_bits( &dim->masks, source,
- source_pos, source_bits, memory );
-
- Exit:
- return error;
- }
-
-
- /* add a new single stem (called from "T1Stem" method) */
- static FT_Error
- ps_dimension_add_t1stem( PS_Dimension dim,
- FT_Int pos,
- FT_Int len,
- FT_Memory memory,
- FT_Int *aindex )
- {
- FT_Error error = PSH_Err_Ok;
- FT_UInt flags = 0;
-
-
- /* detect ghost stem */
- if ( len < 0 )
- {
- flags |= PS_HINT_FLAG_GHOST;
- if ( len == -21 )
- {
- flags |= PS_HINT_FLAG_BOTTOM;
- pos += len;
- }
- len = 0;
- }
-
- if ( aindex )
- *aindex = -1;
-
- /* now, lookup stem in the current hints table */
- {
- PS_Mask mask;
- FT_UInt idx;
- FT_UInt max = dim->hints.num_hints;
- PS_Hint hint = dim->hints.hints;
-
-
- for ( idx = 0; idx < max; idx++, hint++ )
- {
- if ( hint->pos == pos && hint->len == len )
- break;
- }
-
- /* we need to create a new hint in the table */
- if ( idx >= max )
- {
- error = ps_hint_table_alloc( &dim->hints, memory, &hint );
- if ( error )
- goto Exit;
-
- hint->pos = pos;
- hint->len = len;
- hint->flags = flags;
- }
-
- /* now, store the hint in the current mask */
- error = ps_mask_table_last( &dim->masks, memory, &mask );
- if ( error )
- goto Exit;
-
- error = ps_mask_set_bit( mask, idx, memory );
- if ( error )
- goto Exit;
-
- if ( aindex )
- *aindex = (FT_Int)idx;
- }
-
- Exit:
- return error;
- }
-
-
- /* add a "hstem3/vstem3" counter to our dimension table */
- static FT_Error
- ps_dimension_add_counter( PS_Dimension dim,
- FT_Int hint1,
- FT_Int hint2,
- FT_Int hint3,
- FT_Memory memory )
- {
- FT_Error error = PSH_Err_Ok;
- FT_UInt count = dim->counters.num_masks;
- PS_Mask counter = dim->counters.masks;
-
-
- /* try to find an existing counter mask that already uses */
- /* one of these stems here */
- for ( ; count > 0; count--, counter++ )
- {
- if ( ps_mask_test_bit( counter, hint1 ) ||
- ps_mask_test_bit( counter, hint2 ) ||
- ps_mask_test_bit( counter, hint3 ) )
- break;
- }
-
- /* create a new counter when needed */
- if ( count == 0 )
- {
- error = ps_mask_table_alloc( &dim->counters, memory, &counter );
- if ( error )
- goto Exit;
- }
-
- /* now, set the bits for our hints in the counter mask */
- error = ps_mask_set_bit( counter, hint1, memory );
- if ( error )
- goto Exit;
-
- error = ps_mask_set_bit( counter, hint2, memory );
- if ( error )
- goto Exit;
-
- error = ps_mask_set_bit( counter, hint3, memory );
- if ( error )
- goto Exit;
-
- Exit:
- return error;
- }
-
-
- /* end of recording session for a given dimension */
- static FT_Error
- ps_dimension_end( PS_Dimension dim,
- FT_UInt end_point,
- FT_Memory memory )
- {
- /* end hint mask table */
- ps_dimension_end_mask( dim, end_point );
-
- /* merge all counter masks into independent "paths" */
- return ps_mask_table_merge_all( &dim->counters, memory );
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PS_RECORDER MANAGEMENT *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /* destroy hints */
- FT_LOCAL( void )
- ps_hints_done( PS_Hints hints )
- {
- FT_Memory memory = hints->memory;
-
-
- ps_dimension_done( &hints->dimension[0], memory );
- ps_dimension_done( &hints->dimension[1], memory );
-
- hints->error = PSH_Err_Ok;
- hints->memory = 0;
- }
-
-
- FT_LOCAL( FT_Error )
- ps_hints_init( PS_Hints hints,
- FT_Memory memory )
- {
- FT_MEM_ZERO( hints, sizeof ( *hints ) );
- hints->memory = memory;
- return PSH_Err_Ok;
- }
-
-
- /* initialize a hints for a new session */
- static void
- ps_hints_open( PS_Hints hints,
- PS_Hint_Type hint_type )
- {
- switch ( hint_type )
- {
- case PS_HINT_TYPE_1:
- case PS_HINT_TYPE_2:
- hints->error = PSH_Err_Ok;
- hints->hint_type = hint_type;
-
- ps_dimension_init( &hints->dimension[0] );
- ps_dimension_init( &hints->dimension[1] );
- break;
-
- default:
- hints->error = PSH_Err_Invalid_Argument;
- hints->hint_type = hint_type;
-
- FT_TRACE0(( "ps_hints_open: invalid charstring type\n" ));
- break;
- }
- }
-
-
- /* add one or more stems to the current hints table */
- static void
- ps_hints_stem( PS_Hints hints,
- FT_Int dimension,
- FT_UInt count,
- FT_Long* stems )
- {
- if ( !hints->error )
- {
- /* limit "dimension" to 0..1 */
- if ( dimension < 0 || dimension > 1 )
- {
- FT_TRACE0(( "ps_hints_stem: invalid dimension (%d) used\n",
- dimension ));
- dimension = ( dimension != 0 );
- }
-
- /* record the stems in the current hints/masks table */
- switch ( hints->hint_type )
- {
- case PS_HINT_TYPE_1: /* Type 1 "hstem" or "vstem" operator */
- case PS_HINT_TYPE_2: /* Type 2 "hstem" or "vstem" operator */
- {
- PS_Dimension dim = &hints->dimension[dimension];
-
-
- for ( ; count > 0; count--, stems += 2 )
- {
- FT_Error error;
- FT_Memory memory = hints->memory;
-
-
- error = ps_dimension_add_t1stem(
- dim, (FT_Int)stems[0], (FT_Int)stems[1],
- memory, NULL );
- if ( error )
- {
- FT_ERROR(( "ps_hints_stem: could not add stem"
- " (%d,%d) to hints table\n", stems[0], stems[1] ));
-
- hints->error = error;
- return;
- }
- }
- break;
- }
-
- default:
- FT_TRACE0(( "ps_hints_stem: called with invalid hint type (%d)\n",
- hints->hint_type ));
- break;
- }
- }
- }
-
-
- /* add one Type1 counter stem to the current hints table */
- static void
- ps_hints_t1stem3( PS_Hints hints,
- FT_Int dimension,
- FT_Fixed* stems )
- {
- FT_Error error = PSH_Err_Ok;
-
-
- if ( !hints->error )
- {
- PS_Dimension dim;
- FT_Memory memory = hints->memory;
- FT_Int count;
- FT_Int idx[3];
-
-
- /* limit "dimension" to 0..1 */
- if ( dimension < 0 || dimension > 1 )
- {
- FT_TRACE0(( "ps_hints_t1stem3: invalid dimension (%d) used\n",
- dimension ));
- dimension = ( dimension != 0 );
- }
-
- dim = &hints->dimension[dimension];
-
- /* there must be 6 elements in the 'stem' array */
- if ( hints->hint_type == PS_HINT_TYPE_1 )
- {
- /* add the three stems to our hints/masks table */
- for ( count = 0; count < 3; count++, stems += 2 )
- {
- error = ps_dimension_add_t1stem( dim,
- (FT_Int)FIXED_TO_INT( stems[0] ),
- (FT_Int)FIXED_TO_INT( stems[1] ),
- memory, &idx[count] );
- if ( error )
- goto Fail;
- }
-
- /* now, add the hints to the counters table */
- error = ps_dimension_add_counter( dim, idx[0], idx[1], idx[2],
- memory );
- if ( error )
- goto Fail;
- }
- else
- {
- FT_ERROR(( "ps_hints_t1stem3: called with invalid hint type\n" ));
- error = PSH_Err_Invalid_Argument;
- goto Fail;
- }
- }
-
- return;
-
- Fail:
- FT_ERROR(( "ps_hints_t1stem3: could not add counter stems to table\n" ));
- hints->error = error;
- }
-
-
- /* reset hints (only with Type 1 hints) */
- static void
- ps_hints_t1reset( PS_Hints hints,
- FT_UInt end_point )
- {
- FT_Error error = PSH_Err_Ok;
-
-
- if ( !hints->error )
- {
- FT_Memory memory = hints->memory;
-
-
- if ( hints->hint_type == PS_HINT_TYPE_1 )
- {
- error = ps_dimension_reset_mask( &hints->dimension[0],
- end_point, memory );
- if ( error )
- goto Fail;
-
- error = ps_dimension_reset_mask( &hints->dimension[1],
- end_point, memory );
- if ( error )
- goto Fail;
- }
- else
- {
- /* invalid hint type */
- error = PSH_Err_Invalid_Argument;
- goto Fail;
- }
- }
- return;
-
- Fail:
- hints->error = error;
- }
-
-
- /* Type2 "hintmask" operator, add a new hintmask to each direction */
- static void
- ps_hints_t2mask( PS_Hints hints,
- FT_UInt end_point,
- FT_UInt bit_count,
- const FT_Byte* bytes )
- {
- FT_Error error;
-
-
- if ( !hints->error )
- {
- PS_Dimension dim = hints->dimension;
- FT_Memory memory = hints->memory;
- FT_UInt count1 = dim[0].hints.num_hints;
- FT_UInt count2 = dim[1].hints.num_hints;
-
-
- /* check bit count; must be equal to current total hint count */
- if ( bit_count != count1 + count2 )
- {
- FT_TRACE0(( "ps_hints_t2mask:"
- " called with invalid bitcount %d (instead of %d)\n",
- bit_count, count1 + count2 ));
-
- /* simply ignore the operator */
- return;
- }
-
- /* set-up new horizontal and vertical hint mask now */
- error = ps_dimension_set_mask_bits( &dim[0], bytes, count2, count1,
- end_point, memory );
- if ( error )
- goto Fail;
-
- error = ps_dimension_set_mask_bits( &dim[1], bytes, 0, count2,
- end_point, memory );
- if ( error )
- goto Fail;
- }
- return;
-
- Fail:
- hints->error = error;
- }
-
-
- static void
- ps_hints_t2counter( PS_Hints hints,
- FT_UInt bit_count,
- const FT_Byte* bytes )
- {
- FT_Error error;
-
-
- if ( !hints->error )
- {
- PS_Dimension dim = hints->dimension;
- FT_Memory memory = hints->memory;
- FT_UInt count1 = dim[0].hints.num_hints;
- FT_UInt count2 = dim[1].hints.num_hints;
-
-
- /* check bit count, must be equal to current total hint count */
- if ( bit_count != count1 + count2 )
- {
- FT_TRACE0(( "ps_hints_t2counter:"
- " called with invalid bitcount %d (instead of %d)\n",
- bit_count, count1 + count2 ));
-
- /* simply ignore the operator */
- return;
- }
-
- /* set-up new horizontal and vertical hint mask now */
- error = ps_dimension_set_mask_bits( &dim[0], bytes, 0, count1,
- 0, memory );
- if ( error )
- goto Fail;
-
- error = ps_dimension_set_mask_bits( &dim[1], bytes, count1, count2,
- 0, memory );
- if ( error )
- goto Fail;
- }
- return;
-
- Fail:
- hints->error = error;
- }
-
-
- /* end recording session */
- static FT_Error
- ps_hints_close( PS_Hints hints,
- FT_UInt end_point )
- {
- FT_Error error;
-
-
- error = hints->error;
- if ( !error )
- {
- FT_Memory memory = hints->memory;
- PS_Dimension dim = hints->dimension;
-
-
- error = ps_dimension_end( &dim[0], end_point, memory );
- if ( !error )
- {
- error = ps_dimension_end( &dim[1], end_point, memory );
- }
- }
-
-#ifdef DEBUG_HINTER
- if ( !error )
- ps_debug_hints = hints;
-#endif
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** TYPE 1 HINTS RECORDING INTERFACE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- static void
- t1_hints_open( T1_Hints hints )
- {
- ps_hints_open( (PS_Hints)hints, PS_HINT_TYPE_1 );
- }
-
- static void
- t1_hints_stem( T1_Hints hints,
- FT_Int dimension,
- FT_Fixed* coords )
- {
- FT_Pos stems[2];
-
-
- stems[0] = FIXED_TO_INT( coords[0] );
- stems[1] = FIXED_TO_INT( coords[1] );
-
- ps_hints_stem( (PS_Hints)hints, dimension, 1, stems );
- }
-
-
- FT_LOCAL_DEF( void )
- t1_hints_funcs_init( T1_Hints_FuncsRec* funcs )
- {
- FT_MEM_ZERO( (char*)funcs, sizeof ( *funcs ) );
-
- funcs->open = (T1_Hints_OpenFunc) t1_hints_open;
- funcs->close = (T1_Hints_CloseFunc) ps_hints_close;
- funcs->stem = (T1_Hints_SetStemFunc) t1_hints_stem;
- funcs->stem3 = (T1_Hints_SetStem3Func)ps_hints_t1stem3;
- funcs->reset = (T1_Hints_ResetFunc) ps_hints_t1reset;
- funcs->apply = (T1_Hints_ApplyFunc) ps_hints_apply;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** TYPE 2 HINTS RECORDING INTERFACE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- static void
- t2_hints_open( T2_Hints hints )
- {
- ps_hints_open( (PS_Hints)hints, PS_HINT_TYPE_2 );
- }
-
-
- static void
- t2_hints_stems( T2_Hints hints,
- FT_Int dimension,
- FT_Int count,
- FT_Fixed* coords )
- {
- FT_Pos stems[32], y, n;
- FT_Int total = count;
-
-
- y = 0;
- while ( total > 0 )
- {
- /* determine number of stems to write */
- count = total;
- if ( count > 16 )
- count = 16;
-
- /* compute integer stem positions in font units */
- for ( n = 0; n < count * 2; n++ )
- {
- y += coords[n];
- stems[n] = FIXED_TO_INT( y );
- }
-
- /* compute lengths */
- for ( n = 0; n < count * 2; n += 2 )
- stems[n + 1] = stems[n + 1] - stems[n];
-
- /* add them to the current dimension */
- ps_hints_stem( (PS_Hints)hints, dimension, count, stems );
-
- total -= count;
- }
- }
-
-
- FT_LOCAL_DEF( void )
- t2_hints_funcs_init( T2_Hints_FuncsRec* funcs )
- {
- FT_MEM_ZERO( funcs, sizeof ( *funcs ) );
-
- funcs->open = (T2_Hints_OpenFunc) t2_hints_open;
- funcs->close = (T2_Hints_CloseFunc) ps_hints_close;
- funcs->stems = (T2_Hints_StemsFunc) t2_hints_stems;
- funcs->hintmask= (T2_Hints_MaskFunc) ps_hints_t2mask;
- funcs->counter = (T2_Hints_CounterFunc)ps_hints_t2counter;
- funcs->apply = (T2_Hints_ApplyFunc) ps_hints_apply;
- }
-
-
-/* END */