#include <freetype/freetype.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftcalc.h>
#include "pshrec.h"
#include "pshalgo.h"
#include "pshnterr.h"

Include dependency graph for pshrec.c:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	FT_COMPONENT pshrec

Functions
static void	ps_hint_table_done (PS_Hint_Table table, FT_Memory memory)

static FT_Error	ps_hint_table_ensure (PS_Hint_Table table, FT_UInt count, FT_Memory memory)

static FT_Error	ps_hint_table_alloc (PS_Hint_Table table, FT_Memory memory, PS_Hint *ahint)

static void	ps_mask_done (PS_Mask mask, FT_Memory memory)

static FT_Error	ps_mask_ensure (PS_Mask mask, FT_UInt count, FT_Memory memory)

static FT_Int	ps_mask_test_bit (PS_Mask mask, FT_Int idx)

static void	ps_mask_clear_bit (PS_Mask mask, FT_UInt idx)

static FT_Error	ps_mask_set_bit (PS_Mask mask, FT_UInt idx, FT_Memory memory)

static void	ps_mask_table_done (PS_Mask_Table table, FT_Memory memory)

static FT_Error	ps_mask_table_ensure (PS_Mask_Table table, FT_UInt count, FT_Memory memory)

static FT_Error	ps_mask_table_alloc (PS_Mask_Table table, FT_Memory memory, PS_Mask *amask)

static FT_Error	ps_mask_table_last (PS_Mask_Table table, FT_Memory memory, PS_Mask *amask)

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)

static FT_Int	ps_mask_table_test_intersect (PS_Mask_Table table, FT_UInt index1, FT_UInt index2)

static FT_Error	ps_mask_table_merge (PS_Mask_Table table, FT_UInt index1, FT_UInt index2, FT_Memory memory)

static FT_Error	ps_mask_table_merge_all (PS_Mask_Table table, FT_Memory memory)

static void	ps_dimension_done (PS_Dimension dimension, FT_Memory memory)

static void	ps_dimension_init (PS_Dimension dimension)

static void	ps_dimension_end_mask (PS_Dimension dim, FT_UInt end_point)

static FT_Error	ps_dimension_reset_mask (PS_Dimension dim, FT_UInt end_point, FT_Memory memory)

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)

static FT_Error	ps_dimension_add_t1stem (PS_Dimension dim, FT_Int pos, FT_Int len, FT_Memory memory, FT_Int *aindex)

static FT_Error	ps_dimension_add_counter (PS_Dimension dim, FT_Int hint1, FT_Int hint2, FT_Int hint3, FT_Memory memory)

static FT_Error	ps_dimension_end (PS_Dimension dim, FT_UInt end_point, FT_Memory memory)

	ps_hints_done (PS_Hints hints)

	ps_hints_init (PS_Hints hints, FT_Memory memory)

static void	ps_hints_open (PS_Hints hints, PS_Hint_Type hint_type)

static void	ps_hints_stem (PS_Hints hints, FT_UInt dimension, FT_Int count, FT_Long *stems)

static void	ps_hints_t1stem3 (PS_Hints hints, FT_UInt dimension, FT_Fixed *stems)

static void	ps_hints_t1reset (PS_Hints hints, FT_UInt end_point)

static void	ps_hints_t2mask (PS_Hints hints, FT_UInt end_point, FT_UInt bit_count, const FT_Byte *bytes)

static void	ps_hints_t2counter (PS_Hints hints, FT_UInt bit_count, const FT_Byte *bytes)

static FT_Error	ps_hints_close (PS_Hints hints, FT_UInt end_point)

static void	t1_hints_open (T1_Hints hints)

static void	t1_hints_stem (T1_Hints hints, FT_UInt dimension, FT_Fixed *coords)

	t1_hints_funcs_init (T1_Hints_FuncsRec *funcs)

static void	t2_hints_open (T2_Hints hints)

static void	t2_hints_stems (T2_Hints hints, FT_UInt dimension, FT_Int count, FT_Fixed *coords)

	t2_hints_funcs_init (T2_Hints_FuncsRec *funcs)

Macro Definition Documentation

◆ FT_COMPONENT

#define FT_COMPONENT pshrec

Definition at line 30 of file pshrec.c.

Function Documentation

◆ ps_dimension_add_counter()

static FT_Error ps_dimension_add_counter	(	PS_Dimension	dim,
		FT_Int	hint1,
		FT_Int	hint2,
		FT_Int	hint3,
		FT_Memory	memory
	)

static

Definition at line 722 of file pshrec.c.

  {
    FT_Error  error   = FT_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 */
    if ( hint1 >= 0 )
    {
      error = ps_mask_set_bit( counter, (FT_UInt)hint1, memory );
      if ( error )
        goto Exit;
    }
 
    if ( hint2 >= 0 )
    {
      error = ps_mask_set_bit( counter, (FT_UInt)hint2, memory );
      if ( error )
        goto Exit;
    }
 
    if ( hint3 >= 0 )
    {
      error = ps_mask_set_bit( counter, (FT_UInt)hint3, memory );
      if ( error )
        goto Exit;
    }
 
  Exit:
    return error;
  }

Referenced by ps_hints_t1stem3().

◆ ps_dimension_add_t1stem()

static FT_Error ps_dimension_add_t1stem	(	PS_Dimension	dim,
		FT_Int	pos,
		FT_Int	len,
		FT_Memory	memory,
		FT_Int *	aindex
	)

static

Definition at line 651 of file pshrec.c.

  {
    FT_Error  error = FT_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    = ADD_INT( 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;
  }

Referenced by ps_hints_stem(), and ps_hints_t1stem3().

◆ ps_dimension_done()

static void ps_dimension_done	(	PS_Dimension	dimension,
		FT_Memory	memory
	)

static

Definition at line 543 of file pshrec.c.

  {
    ps_mask_table_done( &dimension->counters, memory );
    ps_mask_table_done( &dimension->masks,    memory );
    ps_hint_table_done( &dimension->hints,    memory );
  }

Referenced by ps_hints_done().

◆ ps_dimension_end()

static FT_Error ps_dimension_end	(	PS_Dimension	dim,
		FT_UInt	end_point,
		FT_Memory	memory
	)

static

Definition at line 780 of file pshrec.c.

  {
    /* 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 );
  }

Referenced by ps_hints_close().

◆ ps_dimension_end_mask()

static void ps_dimension_end_mask	(	PS_Dimension	dim,
		FT_UInt	end_point
	)

static

Definition at line 589 of file pshrec.c.

  {
    FT_UInt  count = dim->masks.num_masks;
 
 
    if ( count > 0 )
    {
      PS_Mask  mask = dim->masks.masks + count - 1;
 
 
      mask->end_point = end_point;
    }
  }

Referenced by ps_dimension_end(), and ps_dimension_reset_mask().

◆ ps_dimension_init()

static void ps_dimension_init ( PS_Dimension dimension )

static

Definition at line 554 of file pshrec.c.

  {
    dimension->hints.num_hints    = 0;
    dimension->masks.num_masks    = 0;
    dimension->counters.num_masks = 0;
  }

Referenced by ps_hints_open().

◆ ps_dimension_reset_mask()

static FT_Error ps_dimension_reset_mask	(	PS_Dimension	dim,
		FT_UInt	end_point,
		FT_Memory	memory
	)

static

Definition at line 608 of file pshrec.c.

  {
    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 );
  }

Referenced by ps_dimension_set_mask_bits(), and ps_hints_t1reset().

◆ ps_dimension_set_mask_bits()

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
	)

static

Definition at line 625 of file pshrec.c.

  {
    FT_Error  error;
 
 
    /* 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;
  }

Referenced by ps_hints_t2counter(), and ps_hints_t2mask().

◆ ps_hint_table_alloc()

static FT_Error ps_hint_table_alloc	(	PS_Hint_Table	table,
		FT_Memory	memory,
		PS_Hint *	ahint
	)

static

Definition at line 81 of file pshrec.c.

  {
    FT_Error  error = FT_Err_Ok;
    FT_UInt   count;
    PS_Hint   hint = NULL;
 
 
    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;
  }

Referenced by ps_dimension_add_t1stem().

◆ ps_hint_table_done()

static void ps_hint_table_done	(	PS_Hint_Table	table,
		FT_Memory	memory
	)

static

Definition at line 49 of file pshrec.c.

  {
    FT_FREE( table->hints );
    table->num_hints = 0;
    table->max_hints = 0;
  }

Referenced by ps_dimension_done().

◆ ps_hint_table_ensure()

static FT_Error ps_hint_table_ensure	(	PS_Hint_Table	table,
		FT_UInt	count,
		FT_Memory	memory
	)

static

Definition at line 60 of file pshrec.c.

  {
    FT_UInt   old_max = table->max_hints;
    FT_UInt   new_max = count;
    FT_Error  error   = FT_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;
  }

Referenced by ps_hint_table_alloc().

◆ ps_hints_close()

static FT_Error ps_hints_close	(	PS_Hints	hints,
		FT_UInt	end_point
	)

static

Definition at line 1082 of file pshrec.c.

  {
    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;
  }

Referenced by t1_hints_funcs_init(), and t2_hints_funcs_init().

◆ ps_hints_done()

ps_hints_done ( PS_Hints hints )

Definition at line 803 of file pshrec.c.

  {
    FT_Memory  memory = hints->memory;
 
 
    ps_dimension_done( &hints->dimension[0], memory );
    ps_dimension_done( &hints->dimension[1], memory );
 
    hints->error  = FT_Err_Ok;
    hints->memory = NULL;
  }

Referenced by ps_hinter_done().

◆ ps_hints_init()

ps_hints_init	(	PS_Hints	hints,
		FT_Memory	memory
	)

Definition at line 817 of file pshrec.c.

  {
    FT_ZERO( hints );
    hints->memory = memory;
  }

Referenced by ps_hinter_init().

◆ ps_hints_open()

static void ps_hints_open	(	PS_Hints	hints,
		PS_Hint_Type	hint_type
	)

static

Definition at line 827 of file pshrec.c.

  {
    hints->error     = FT_Err_Ok;
    hints->hint_type = hint_type;
 
    ps_dimension_init( &hints->dimension[0] );
    ps_dimension_init( &hints->dimension[1] );
  }

Referenced by t1_hints_open(), and t2_hints_open().

◆ ps_hints_stem()

static void ps_hints_stem	(	PS_Hints	hints,
		FT_UInt	dimension,
		FT_Int	count,
		FT_Long *	stems
	)

static

Definition at line 840 of file pshrec.c.

  {
    PS_Dimension  dim;
 
 
    if ( hints->error )
      return;
 
    /* limit "dimension" to 0..1 */
    if ( 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 */
    /* (Type 1 & 2's `hstem' or `vstem' operators)       */
    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"
                   " (%ld,%ld) to hints table\n", stems[0], stems[1] ));
 
        hints->error = error;
        return;
      }
    }
  }

Referenced by t1_hints_stem(), and t2_hints_stems().

◆ ps_hints_t1reset()

static void ps_hints_t1reset	(	PS_Hints	hints,
		FT_UInt	end_point
	)

static

Definition at line 951 of file pshrec.c.

  {
    FT_Error  error = FT_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 = FT_THROW( Invalid_Argument );
        goto Fail;
      }
    }
    return;
 
  Fail:
    hints->error = error;
  }

Referenced by t1_hints_funcs_init().

◆ ps_hints_t1stem3()

static void ps_hints_t1stem3	(	PS_Hints	hints,
		FT_UInt	dimension,
		FT_Fixed *	stems
	)

static

Definition at line 888 of file pshrec.c.

  {
    FT_Error  error = FT_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 > 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 = FT_THROW( Invalid_Argument );
        goto Fail;
      }
    }
 
    return;
 
  Fail:
    FT_ERROR(( "ps_hints_t1stem3: could not add counter stems to table\n" ));
    hints->error = error;
  }

Referenced by t1_hints_funcs_init().

◆ ps_hints_t2counter()

static void ps_hints_t2counter	(	PS_Hints	hints,
		FT_UInt	bit_count,
		const FT_Byte *	bytes
	)

static

Definition at line 1036 of file pshrec.c.

  {
    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;
  }

Referenced by t2_hints_funcs_init().

◆ ps_hints_t2mask()

static void ps_hints_t2mask	(	PS_Hints	hints,
		FT_UInt	end_point,
		FT_UInt	bit_count,
		const FT_Byte *	bytes
	)

static

Definition at line 990 of file pshrec.c.

  {
    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;
  }

Referenced by t2_hints_funcs_init().

◆ ps_mask_clear_bit()

static void ps_mask_clear_bit	(	PS_Mask	mask,
		FT_UInt	idx
	)

static

Definition at line 168 of file pshrec.c.

  {
    FT_Byte*  p;
 
 
    if ( idx >= mask->num_bits )
      return;
 
    p    = mask->bytes + ( idx >> 3 );
    p[0] = (FT_Byte)( p[0] & ~( 0x80 >> ( idx & 7 ) ) );
  }

Referenced by ps_mask_table_merge().

◆ ps_mask_done()

static void ps_mask_done	(	PS_Mask	mask,
		FT_Memory	memory
	)

static

Definition at line 123 of file pshrec.c.

  {
    FT_FREE( mask->bytes );
    mask->num_bits  = 0;
    mask->max_bits  = 0;
    mask->end_point = 0;
  }

Referenced by ps_mask_table_done().

◆ ps_mask_ensure()

static FT_Error ps_mask_ensure	(	PS_Mask	mask,
		FT_UInt	count,
		FT_Memory	memory
	)

static

Definition at line 135 of file pshrec.c.

  {
    FT_UInt   old_max = ( mask->max_bits + 7 ) >> 3;
    FT_UInt   new_max = ( count          + 7 ) >> 3;
    FT_Error  error   = FT_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;
  }

Referenced by ps_mask_set_bit(), ps_mask_table_merge(), and ps_mask_table_set_bits().

◆ ps_mask_set_bit()

static FT_Error ps_mask_set_bit	(	PS_Mask	mask,
		FT_UInt	idx,
		FT_Memory	memory
	)

static

Definition at line 184 of file pshrec.c.

  {
    FT_Error  error = FT_Err_Ok;
    FT_Byte*  p;
 
 
    if ( 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;
  }

Referenced by ps_dimension_add_counter(), and ps_dimension_add_t1stem().

◆ ps_mask_table_alloc()

static FT_Error ps_mask_table_alloc	(	PS_Mask_Table	table,
		FT_Memory	memory,
		PS_Mask *	amask
	)

static

Definition at line 250 of file pshrec.c.

  {
    FT_UInt   count;
    FT_Error  error = FT_Err_Ok;
    PS_Mask   mask  = NULL;
 
 
    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;
  }

Referenced by ps_dimension_add_counter(), ps_dimension_reset_mask(), and ps_mask_table_last().

◆ ps_mask_table_done()

static void ps_mask_table_done	(	PS_Mask_Table	table,
		FT_Memory	memory
	)

static

Definition at line 211 of file pshrec.c.

  {
    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;
  }

Referenced by ps_dimension_done().

◆ ps_mask_table_ensure()

static FT_Error ps_mask_table_ensure	(	PS_Mask_Table	table,
		FT_UInt	count,
		FT_Memory	memory
	)

static

Definition at line 229 of file pshrec.c.

  {
    FT_UInt   old_max = table->max_masks;
    FT_UInt   new_max = count;
    FT_Error  error   = FT_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;
  }

Referenced by ps_mask_table_alloc().

◆ ps_mask_table_last()

static FT_Error ps_mask_table_last	(	PS_Mask_Table	table,
		FT_Memory	memory,
		PS_Mask *	amask
	)

static

Definition at line 282 of file pshrec.c.

  {
    FT_Error  error = FT_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;
  }

Referenced by ps_dimension_add_t1stem(), and ps_mask_table_set_bits().

◆ ps_mask_table_merge()

static FT_Error ps_mask_table_merge	(	PS_Mask_Table	table,
		FT_UInt	index1,
		FT_UInt	index2,
		FT_Memory	memory
	)

static

Definition at line 402 of file pshrec.c.

  {
    FT_Error  error = FT_Err_Ok;
 
 
    /* swap index1 and index2 so that index1 < index2 */
    if ( index1 > index2 )
    {
      FT_UInt  temp;
 
 
      temp   = index1;
      index1 = index2;
      index2 = temp;
    }
 
    if ( index1 < index2 && index2 < 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   = ( 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;
 
      /* number of masks to move */
      delta = (FT_Int)( table->num_masks - 1 - index2 );
      if ( delta > 0 )
      {
        /* move to end of table for reuse */
        PS_MaskRec  dummy = *mask2;
 
 
        ft_memmove( mask2,
                    mask2 + 1,
                    (FT_UInt)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;
  }

Referenced by ps_mask_table_merge_all().

◆ ps_mask_table_merge_all()

static FT_Error ps_mask_table_merge_all	(	PS_Mask_Table	table,
		FT_Memory	memory
	)

static

Definition at line 499 of file pshrec.c.

  {
    FT_Int    index1, index2;
    FT_Error  error = FT_Err_Ok;
 
 
    /* both loops go down to 0, thus FT_Int for index1 and index2 */
    for ( index1 = (FT_Int)table->num_masks - 1; index1 > 0; index1-- )
    {
      for ( index2 = index1 - 1; index2 >= 0; index2-- )
      {
        if ( ps_mask_table_test_intersect( table,
                                           (FT_UInt)index1,
                                           (FT_UInt)index2 ) )
        {
          error = ps_mask_table_merge( table,
                                       (FT_UInt)index2,
                                       (FT_UInt)index1,
                                       memory );
          if ( error )
            goto Exit;
 
          break;
        }
      }
    }
 
  Exit:
    return error;
  }

Referenced by ps_dimension_end().

◆ ps_mask_table_set_bits()

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
	)

static

Definition at line 309 of file pshrec.c.

  {
    FT_Error  error;
    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;
  }

Referenced by ps_dimension_set_mask_bits().

◆ ps_mask_table_test_intersect()

static FT_Int ps_mask_table_test_intersect	(	PS_Mask_Table	table,
		FT_UInt	index1,
		FT_UInt	index2
	)

static

Definition at line 370 of file pshrec.c.

  {
    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 = FT_MIN( 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 );
  }

Referenced by ps_mask_table_merge_all().

◆ ps_mask_test_bit()

static FT_Int ps_mask_test_bit	(	PS_Mask	mask,
		FT_Int	idx
	)

static

Definition at line 156 of file pshrec.c.

  {
    if ( (FT_UInt)idx >= mask->num_bits )
      return 0;
 
    return mask->bytes[idx >> 3] & ( 0x80 >> ( idx & 7 ) );
  }

Referenced by ps_dimension_add_counter().

◆ t1_hints_funcs_init()

t1_hints_funcs_init ( T1_Hints_FuncsRec * funcs )

Definition at line 1140 of file pshrec.c.

  {
    FT_ZERO( 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;
  }

Referenced by ps_hinter_init().

◆ t1_hints_open()

static void t1_hints_open ( T1_Hints hints )

static

Definition at line 1119 of file pshrec.c.

  {
    ps_hints_open( (PS_Hints)hints, PS_HINT_TYPE_1 );
  }

Referenced by t1_hints_funcs_init().

◆ t1_hints_stem()

static void t1_hints_stem	(	T1_Hints	hints,
		FT_UInt	dimension,
		FT_Fixed *	coords
	)

static

Definition at line 1125 of file pshrec.c.

  {
    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 );
  }

Referenced by t1_hints_funcs_init().

◆ t2_hints_funcs_init()

t2_hints_funcs_init ( T2_Hints_FuncsRec * funcs )

Definition at line 1206 of file pshrec.c.

  {
    FT_ZERO( 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;
  }

Referenced by ps_hinter_init().

◆ t2_hints_open()

static void t2_hints_open ( T2_Hints hints )

static

Definition at line 1162 of file pshrec.c.

  {
    ps_hints_open( (PS_Hints)hints, PS_HINT_TYPE_2 );
  }

Referenced by t2_hints_funcs_init().

◆ t2_hints_stems()

static void t2_hints_stems	(	T2_Hints	hints,
		FT_UInt	dimension,
		FT_Int	count,
		FT_Fixed *	coords
	)

static

Definition at line 1169 of file pshrec.c.

  {
    FT_Pos  stems[32], y;
    FT_Int  total = count, n;
 
 
    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        = ADD_LONG( 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;
    }
  }

Referenced by t2_hints_funcs_init().

Macros

Functions

Macro Definition Documentation

◆ FT_COMPONENT

Function Documentation

◆ ps_dimension_add_counter()

◆ ps_dimension_add_t1stem()

◆ ps_dimension_done()

◆ ps_dimension_end()

◆ ps_dimension_end_mask()

◆ ps_dimension_init()

◆ ps_dimension_reset_mask()

◆ ps_dimension_set_mask_bits()

◆ ps_hint_table_alloc()

◆ ps_hint_table_done()

◆ ps_hint_table_ensure()

◆ ps_hints_close()

◆ ps_hints_done()

◆ ps_hints_init()

◆ ps_hints_open()

◆ ps_hints_stem()

◆ ps_hints_t1reset()

◆ ps_hints_t1stem3()

◆ ps_hints_t2counter()

◆ ps_hints_t2mask()

◆ ps_mask_clear_bit()

◆ ps_mask_done()

◆ ps_mask_ensure()

◆ ps_mask_set_bit()

◆ ps_mask_table_alloc()

◆ ps_mask_table_done()

◆ ps_mask_table_ensure()

◆ ps_mask_table_last()

◆ ps_mask_table_merge()

◆ ps_mask_table_merge_all()

◆ ps_mask_table_set_bits()

◆ ps_mask_table_test_intersect()

◆ ps_mask_test_bit()

◆ t1_hints_funcs_init()

◆ t1_hints_open()

◆ t1_hints_stem()

◆ t2_hints_funcs_init()

◆ t2_hints_open()

◆ t2_hints_stems()