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/*
* Copyright © 2009, 2023 Red Hat, Inc.
* Copyright © 2015 Google, Inc.
*
* 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): Behdad Esfahbod, Matthias Clasen
* Google Author(s): Behdad Esfahbod
*/
#include <freetype/freetype.h>
#include <freetype/tttables.h>
#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ
#include "ft-hb.h"
/* The following three functions are a more or less verbatim
* copy of corresponding HarfBuzz code from hb-ft.cc
*/
static hb_blob_t *
hb_ft_reference_table_ (hb_face_t *face, hb_tag_t tag, void *user_data)
{
FT_Face ft_face = (FT_Face) user_data;
FT_Byte *buffer;
FT_ULong length = 0;
FT_Error error;
FT_UNUSED (face);
/* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length);
if (error)
return NULL;
buffer = (FT_Byte *) ft_smalloc (length);
if (!buffer)
return NULL;
error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
if (error)
{
free (buffer);
return NULL;
}
return hb_blob_create ((const char *) buffer, length,
HB_MEMORY_MODE_WRITABLE,
buffer, ft_sfree);
}
static hb_face_t *
hb_ft_face_create_ (FT_Face ft_face,
hb_destroy_func_t destroy)
{
hb_face_t *face;
if (!ft_face->stream->read) {
hb_blob_t *blob;
blob = hb_blob_create ((const char *) ft_face->stream->base,
(unsigned int) ft_face->stream->size,
HB_MEMORY_MODE_READONLY,
ft_face, destroy);
face = hb_face_create (blob, ft_face->face_index);
hb_blob_destroy (blob);
} else {
face = hb_face_create_for_tables (hb_ft_reference_table_, ft_face, destroy);
}
hb_face_set_index (face, ft_face->face_index);
hb_face_set_upem (face, ft_face->units_per_EM);
return face;
}
FT_LOCAL_DEF(hb_font_t *)
hb_ft_font_create_ (FT_Face ft_face,
hb_destroy_func_t destroy)
{
hb_font_t *font;
hb_face_t *face;
face = hb_ft_face_create_ (ft_face, destroy);
font = hb_font_create (face);
hb_face_destroy (face);
return font;
}
#else /* !FT_CONFIG_OPTION_USE_HARFBUZZ */
/* ANSI C doesn't like empty source files */
typedef int ft_hb_dummy_;
#endif /* !FT_CONFIG_OPTION_USE_HARFBUZZ */
/* END */