/src/skia/third_party/externals/harfbuzz/src/hb-ot-var-mvar-table.hh

Source (jump to first uncovered line)
/*
 * Copyright © 2017  Google, Inc.
 *
 *  This is part of HarfBuzz, a text shaping 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.
 *
 * Google Author(s): Behdad Esfahbod
 */

#ifndef HB_OT_VAR_MVAR_TABLE_HH
#define HB_OT_VAR_MVAR_TABLE_HH

#include "hb-ot-layout-common.hh"


namespace OT {


struct VariationValueRecord
{
  bool sanitize (hb_sanitize_context_t *c) const
  {
    TRACE_SANITIZE (this);
    return_trace (c->check_struct (this));
  }

  public:
  Tag   valueTag; /* Four-byte tag identifying a font-wide measure. */
  HBUINT32    varIdx;   /* Outer/inner index into VariationStore item. */

  public:
  DEFINE_SIZE_STATIC (8);
};


/*
 * MVAR -- Metrics Variations
 * https://docs.microsoft.com/en-us/typography/opentype/spec/mvar
 */
#define HB_OT_TAG_MVAR HB_TAG('M','V','A','R')

struct MVAR
{
  static constexpr hb_tag_t tableTag = HB_OT_TAG_MVAR;

  bool sanitize (hb_sanitize_context_t *c) const
  {
    TRACE_SANITIZE (this);
    return_trace (version.sanitize (c) &&
      likely (version.major == 1) &&
      c->check_struct (this) &&
      valueRecordSize >= VariationValueRecord::static_size &&
      varStore.sanitize (c, this) &&
      c->check_range (valuesZ.arrayZ,
          valueRecordCount,
          valueRecordSize));
  }

  float get_var (hb_tag_t tag,
     const int *coords, unsigned int coord_count) const
  {
    const VariationValueRecord *record;
    record = (VariationValueRecord *) hb_bsearch (tag,
              (const VariationValueRecord *)
                (const HBUINT8 *) valuesZ,
              valueRecordCount, valueRecordSize,
              tag_compare);
    if (!record)
      return 0.;

    return (this+varStore).get_delta (record->varIdx, coords, coord_count);
  }

protected:
  static int tag_compare (const void *pa, const void *pb)
  {
    const hb_tag_t *a = (const hb_tag_t *) pa;
    const Tag *b = (const Tag *) pb;
    return b->cmp (*a);
  }

  protected:
  FixedVersion<>version;  /* Version of the metrics variation table
         * initially set to 0x00010000u */
  HBUINT16  reserved; /* Not used; set to 0. */
  HBUINT16  valueRecordSize;/* The size in bytes of each value record —
         * must be greater than zero. */
  HBUINT16  valueRecordCount;/* The number of value records — may be zero. */
  Offset16To<VariationStore>
    varStore; /* Offset to item variation store table. */
  UnsizedArrayOf<HBUINT8>
    valuesZ;  /* Array of value records. The records must be
         * in binary order of their valueTag field. */

  public:
  DEFINE_SIZE_ARRAY (12, valuesZ);
};

} /* namespace OT */


#endif /* HB_OT_VAR_MVAR_TABLE_HH */

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright © 2017 Google, Inc.
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		* Google Author(s): Behdad Esfahbod
25		*/
26
27		#ifndef HB_OT_VAR_MVAR_TABLE_HH
28		#define HB_OT_VAR_MVAR_TABLE_HH
29
30		#include "hb-ot-layout-common.hh"
31
32
33		namespace OT {
34
35
36		struct VariationValueRecord
37		{
38		bool sanitize (hb_sanitize_context_t *c) const
39	0	{
40	0	TRACE_SANITIZE (this);
41	0	return_trace (c->check_struct (this));
42	0	}
43
44		public:
45		Tag valueTag; /* Four-byte tag identifying a font-wide measure. */
46		HBUINT32 varIdx; /* Outer/inner index into VariationStore item. */
47
48		public:
49		DEFINE_SIZE_STATIC (8);
50		};
51
52
53		/*
54		* MVAR -- Metrics Variations
55		* https://docs.microsoft.com/en-us/typography/opentype/spec/mvar
56		*/
57		#define HB_OT_TAG_MVAR HB_TAG('M','V','A','R')
58
59		struct MVAR
60		{
61		static constexpr hb_tag_t tableTag = HB_OT_TAG_MVAR;
62
63		bool sanitize (hb_sanitize_context_t *c) const
64	0	{
65	0	TRACE_SANITIZE (this);
66	0	return_trace (version.sanitize (c) &&
67	0	likely (version.major == 1) &&
68	0	c->check_struct (this) &&
69	0	valueRecordSize >= VariationValueRecord::static_size &&
70	0	varStore.sanitize (c, this) &&
71	0	c->check_range (valuesZ.arrayZ,
72	0	valueRecordCount,
73	0	valueRecordSize));
74	0	}
75
76		float get_var (hb_tag_t tag,
77		const int *coords, unsigned int coord_count) const
78	0	{
79	0	const VariationValueRecord *record;
80	0	record = (VariationValueRecord *) hb_bsearch (tag,
81	0	(const VariationValueRecord *)
82	0	(const HBUINT8 *) valuesZ,
83	0	valueRecordCount, valueRecordSize,
84	0	tag_compare);
85	0	if (!record)
86	0	return 0.;
87
88	0	return (this+varStore).get_delta (record->varIdx, coords, coord_count);
89	0	}
90
91		protected:
92		static int tag_compare (const void pa, const void pb)
93	0	{
94	0	const hb_tag_t a = (const hb_tag_t ) pa;
95	0	const Tag b = (const Tag ) pb;
96	0	return b->cmp (*a);
97	0	}
98
99		protected:
100		FixedVersion<>version; /* Version of the metrics variation table
101		* initially set to 0x00010000u */
102		HBUINT16 reserved; /* Not used; set to 0. */
103		HBUINT16 valueRecordSize;/* The size in bytes of each value record —
104		* must be greater than zero. */
105		HBUINT16 valueRecordCount;/* The number of value records — may be zero. */
106		Offset16To<VariationStore>
107		varStore; /* Offset to item variation store table. */
108		UnsizedArrayOf<HBUINT8>
109		valuesZ; /* Array of value records. The records must be
110		* in binary order of their valueTag field. */
111
112		public:
113		DEFINE_SIZE_ARRAY (12, valuesZ);
114		};
115
116		} /* namespace OT */
117
118
119		#endif /* HB_OT_VAR_MVAR_TABLE_HH */

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Created: 2021-08-22 09:07