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/*
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
* Copyright (C) 2004,2007 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
*/
#ifndef HARFBUZZ_BUFFER_PRIVATE_H
#define HARFBUZZ_BUFFER_PRIVATE_H
#include "harfbuzz-impl.h"
#include "harfbuzz-buffer.h"
HB_BEGIN_HEADER
#define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
HB_INTERNAL void
_hb_buffer_swap( HB_Buffer buffer );
HB_INTERNAL void
_hb_buffer_clear_output( HB_Buffer buffer );
HB_INTERNAL HB_Error
_hb_buffer_clear_positions( HB_Buffer buffer );
HB_INTERNAL HB_Error
_hb_buffer_add_output_glyphs( HB_Buffer buffer,
HB_UShort num_in,
HB_UShort num_out,
HB_UShort *glyph_data,
HB_UShort component,
HB_UShort ligID );
HB_INTERNAL HB_Error
_hb_buffer_add_output_glyph ( HB_Buffer buffer,
HB_UInt glyph_index,
HB_UShort component,
HB_UShort ligID );
HB_INTERNAL HB_Error
_hb_buffer_copy_output_glyph ( HB_Buffer buffer );
HB_INTERNAL HB_Error
_hb_buffer_replace_output_glyph ( HB_Buffer buffer,
HB_UInt glyph_index,
HB_Bool inplace );
HB_INTERNAL HB_UShort
_hb_buffer_allocate_ligid( HB_Buffer buffer );
/* convenience macros */
#define IN_GLYPH( pos ) (buffer->in_string[(pos)].gindex)
#define IN_ITEM( pos ) (&buffer->in_string[(pos)])
#define IN_CURGLYPH() (buffer->in_string[buffer->in_pos].gindex)
#define IN_CURITEM() (&buffer->in_string[buffer->in_pos])
#define IN_PROPERTIES( pos ) (buffer->in_string[(pos)].properties)
#define IN_LIGID( pos ) (buffer->in_string[(pos)].ligID)
#define IN_COMPONENT( pos ) (buffer->in_string[(pos)].component)
#define POSITION( pos ) (&buffer->positions[(pos)])
#define OUT_GLYPH( pos ) (buffer->out_string[(pos)].gindex)
#define OUT_ITEM( pos ) (&buffer->out_string[(pos)])
#define CHECK_Property( gdef, index, flags, property ) \
( ( error = _HB_GDEF_Check_Property( (gdef), (index), (flags), \
(property) ) ) != HB_Err_Ok )
#define ADD_String( buffer, num_in, num_out, glyph_data, component, ligID ) \
( ( error = _hb_buffer_add_output_glyphs( (buffer), \
(num_in), (num_out), \
(glyph_data), (component), (ligID) \
) ) != HB_Err_Ok )
#define ADD_Glyph( buffer, glyph_index, component, ligID ) \
( ( error = _hb_buffer_add_output_glyph( (buffer), \
(glyph_index), (component), (ligID) \
) ) != HB_Err_Ok )
#define REPLACE_Glyph( buffer, glyph_index, nesting_level ) \
( ( error = _hb_buffer_replace_output_glyph( (buffer), (glyph_index), \
(nesting_level) == 1 ) ) != HB_Err_Ok )
#define COPY_Glyph( buffer ) \
( (error = _hb_buffer_copy_output_glyph ( buffer ) ) != HB_Err_Ok )
HB_END_HEADER
#endif /* HARFBUZZ_BUFFER_PRIVATE_H */
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