1  /*
       2   * Copyright © 2019  Ebrahim Byagowi
       3   *
       4   *  This is part of HarfBuzz, a text shaping library.
       5   *
       6   * Permission is hereby granted, without written agreement and without
       7   * license or royalty fees, to use, copy, modify, and distribute this
       8   * software and its documentation for any purpose, provided that the
       9   * above copyright notice and the following two paragraphs appear in
      10   * all copies of this software.
      11   *
      12   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
      13   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
      14   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
      15   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
      16   * DAMAGE.
      17   *
      18   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
      19   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
      20   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
      21   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
      22   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
      23   */
      24  
      25  #if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
      26  #error "Include <hb-ot.h> instead."
      27  #endif
      28  
      29  #ifndef HB_OT_META_H
      30  #define HB_OT_META_H
      31  
      32  #include "hb.h"
      33  
      34  HB_BEGIN_DECLS
      35  
      36  /**
      37   * hb_ot_meta_tag_t:
      38   * @HB_OT_META_TAG_DESIGN_LANGUAGES: Design languages. Text, using only
      39   * Basic Latin (ASCII) characters. Indicates languages and/or scripts
      40   * for the user audiences that the font was primarily designed for.
      41   * @HB_OT_META_TAG_SUPPORTED_LANGUAGES: Supported languages. Text, using
      42   * only Basic Latin (ASCII) characters. Indicates languages and/or scripts
      43   * that the font is declared to be capable of supporting.
      44   *
      45   * Known metadata tags from https://docs.microsoft.com/en-us/typography/opentype/spec/meta
      46   *
      47   * Since: 2.6.0
      48   **/
      49  typedef enum {
      50  /*
      51     HB_OT_META_TAG_APPL		= HB_TAG ('a','p','p','l'),
      52     HB_OT_META_TAG_BILD		= HB_TAG ('b','i','l','d'),
      53  */
      54    HB_OT_META_TAG_DESIGN_LANGUAGES	= HB_TAG ('d','l','n','g'),
      55    HB_OT_META_TAG_SUPPORTED_LANGUAGES	= HB_TAG ('s','l','n','g'),
      56  
      57    /*< private >*/
      58    _HB_OT_META_TAG_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/
      59  } hb_ot_meta_tag_t;
      60  
      61  HB_EXTERN unsigned int
      62  hb_ot_meta_get_entry_tags (hb_face_t        *face,
      63  			   unsigned int      start_offset,
      64  			   unsigned int     *entries_count, /* IN/OUT.  May be NULL. */
      65  			   hb_ot_meta_tag_t *entries        /* OUT.     May be NULL. */);
      66  
      67  HB_EXTERN hb_blob_t *
      68  hb_ot_meta_reference_entry (hb_face_t *face, hb_ot_meta_tag_t meta_tag);
      69  
      70  HB_END_DECLS
      71  
      72  #endif /* HB_OT_META_H */